Commit | Line | Data |
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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | */ | |
36 | ||
37 | #define DEBUG_SUBSYSTEM S_LMV | |
38 | #include <linux/slab.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/init.h> | |
d7e09d03 PT |
41 | #include <linux/pagemap.h> |
42 | #include <linux/mm.h> | |
43 | #include <asm/div64.h> | |
44 | #include <linux/seq_file.h> | |
45 | #include <linux/namei.h> | |
e8fd99fd | 46 | #include <linux/uaccess.h> |
d7e09d03 | 47 | |
a8c495ac GKH |
48 | #include "../include/lustre/lustre_idl.h" |
49 | #include "../include/obd_support.h" | |
50 | #include "../include/lustre_lib.h" | |
51 | #include "../include/lustre_net.h" | |
52 | #include "../include/obd_class.h" | |
53 | #include "../include/lprocfs_status.h" | |
54 | #include "../include/lustre_lite.h" | |
55 | #include "../include/lustre_fid.h" | |
d7e09d03 PT |
56 | #include "lmv_internal.h" |
57 | ||
58 | static void lmv_activate_target(struct lmv_obd *lmv, | |
59 | struct lmv_tgt_desc *tgt, | |
60 | int activate) | |
61 | { | |
62 | if (tgt->ltd_active == activate) | |
63 | return; | |
64 | ||
65 | tgt->ltd_active = activate; | |
66 | lmv->desc.ld_active_tgt_count += (activate ? 1 : -1); | |
67 | } | |
68 | ||
69 | /** | |
70 | * Error codes: | |
71 | * | |
72 | * -EINVAL : UUID can't be found in the LMV's target list | |
73 | * -ENOTCONN: The UUID is found, but the target connection is bad (!) | |
74 | * -EBADF : The UUID is found, but the OBD of the wrong type (!) | |
75 | */ | |
76 | static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid, | |
77 | int activate) | |
78 | { | |
73bb1da6 | 79 | struct lmv_tgt_desc *uninitialized_var(tgt); |
d7e09d03 PT |
80 | struct obd_device *obd; |
81 | int i; | |
82 | int rc = 0; | |
d7e09d03 PT |
83 | |
84 | CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n", | |
85 | lmv, uuid->uuid, activate); | |
86 | ||
87 | spin_lock(&lmv->lmv_lock); | |
88 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
89 | tgt = lmv->tgts[i]; | |
90 | if (tgt == NULL || tgt->ltd_exp == NULL) | |
91 | continue; | |
92 | ||
55f5a824 | 93 | CDEBUG(D_INFO, "Target idx %d is %s conn %#llx\n", i, |
d7e09d03 PT |
94 | tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie); |
95 | ||
96 | if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) | |
97 | break; | |
98 | } | |
99 | ||
4d54556f JL |
100 | if (i == lmv->desc.ld_tgt_count) { |
101 | rc = -EINVAL; | |
102 | goto out_lmv_lock; | |
103 | } | |
d7e09d03 PT |
104 | |
105 | obd = class_exp2obd(tgt->ltd_exp); | |
4d54556f JL |
106 | if (obd == NULL) { |
107 | rc = -ENOTCONN; | |
108 | goto out_lmv_lock; | |
109 | } | |
d7e09d03 PT |
110 | |
111 | CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n", | |
112 | obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd, | |
113 | obd->obd_type->typ_name, i); | |
114 | LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0); | |
115 | ||
116 | if (tgt->ltd_active == activate) { | |
117 | CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd, | |
118 | activate ? "" : "in"); | |
4d54556f | 119 | goto out_lmv_lock; |
d7e09d03 PT |
120 | } |
121 | ||
122 | CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, | |
123 | activate ? "" : "in"); | |
124 | lmv_activate_target(lmv, tgt, activate); | |
d7e09d03 PT |
125 | |
126 | out_lmv_lock: | |
127 | spin_unlock(&lmv->lmv_lock); | |
128 | return rc; | |
129 | } | |
130 | ||
5dc8d7b4 | 131 | static struct obd_uuid *lmv_get_uuid(struct obd_export *exp) |
d7e09d03 PT |
132 | { |
133 | struct lmv_obd *lmv = &exp->exp_obd->u.lmv; | |
134 | ||
135 | return obd_get_uuid(lmv->tgts[0]->ltd_exp); | |
136 | } | |
137 | ||
138 | static int lmv_notify(struct obd_device *obd, struct obd_device *watched, | |
139 | enum obd_notify_event ev, void *data) | |
140 | { | |
141 | struct obd_connect_data *conn_data; | |
142 | struct lmv_obd *lmv = &obd->u.lmv; | |
143 | struct obd_uuid *uuid; | |
144 | int rc = 0; | |
d7e09d03 PT |
145 | |
146 | if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) { | |
147 | CERROR("unexpected notification of %s %s!\n", | |
148 | watched->obd_type->typ_name, | |
149 | watched->obd_name); | |
0a3bdb00 | 150 | return -EINVAL; |
d7e09d03 PT |
151 | } |
152 | ||
153 | uuid = &watched->u.cli.cl_target_uuid; | |
154 | if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) { | |
155 | /* | |
156 | * Set MDC as active before notifying the observer, so the | |
157 | * observer can use the MDC normally. | |
158 | */ | |
159 | rc = lmv_set_mdc_active(lmv, uuid, | |
160 | ev == OBD_NOTIFY_ACTIVE); | |
161 | if (rc) { | |
162 | CERROR("%sactivation of %s failed: %d\n", | |
163 | ev == OBD_NOTIFY_ACTIVE ? "" : "de", | |
164 | uuid->uuid, rc); | |
0a3bdb00 | 165 | return rc; |
d7e09d03 PT |
166 | } |
167 | } else if (ev == OBD_NOTIFY_OCD) { | |
168 | conn_data = &watched->u.cli.cl_import->imp_connect_data; | |
169 | /* | |
170 | * XXX: Make sure that ocd_connect_flags from all targets are | |
171 | * the same. Otherwise one of MDTs runs wrong version or | |
172 | * something like this. --umka | |
173 | */ | |
174 | obd->obd_self_export->exp_connect_data = *conn_data; | |
175 | } | |
176 | #if 0 | |
177 | else if (ev == OBD_NOTIFY_DISCON) { | |
178 | /* | |
179 | * For disconnect event, flush fld cache for failout MDS case. | |
180 | */ | |
181 | fld_client_flush(&lmv->lmv_fld); | |
182 | } | |
183 | #endif | |
184 | /* | |
185 | * Pass the notification up the chain. | |
186 | */ | |
187 | if (obd->obd_observer) | |
188 | rc = obd_notify(obd->obd_observer, watched, ev, data); | |
189 | ||
0a3bdb00 | 190 | return rc; |
d7e09d03 PT |
191 | } |
192 | ||
193 | /** | |
194 | * This is fake connect function. Its purpose is to initialize lmv and say | |
195 | * caller that everything is okay. Real connection will be performed later. | |
196 | */ | |
197 | static int lmv_connect(const struct lu_env *env, | |
198 | struct obd_export **exp, struct obd_device *obd, | |
199 | struct obd_uuid *cluuid, struct obd_connect_data *data, | |
200 | void *localdata) | |
201 | { | |
202 | struct proc_dir_entry *lmv_proc_dir; | |
203 | struct lmv_obd *lmv = &obd->u.lmv; | |
204 | struct lustre_handle conn = { 0 }; | |
205 | int rc = 0; | |
d7e09d03 PT |
206 | |
207 | /* | |
208 | * We don't want to actually do the underlying connections more than | |
209 | * once, so keep track. | |
210 | */ | |
211 | lmv->refcount++; | |
212 | if (lmv->refcount > 1) { | |
213 | *exp = NULL; | |
0a3bdb00 | 214 | return 0; |
d7e09d03 PT |
215 | } |
216 | ||
217 | rc = class_connect(&conn, obd, cluuid); | |
218 | if (rc) { | |
219 | CERROR("class_connection() returned %d\n", rc); | |
0a3bdb00 | 220 | return rc; |
d7e09d03 PT |
221 | } |
222 | ||
223 | *exp = class_conn2export(&conn); | |
224 | class_export_get(*exp); | |
225 | ||
226 | lmv->exp = *exp; | |
227 | lmv->connected = 0; | |
228 | lmv->cluuid = *cluuid; | |
229 | ||
230 | if (data) | |
231 | lmv->conn_data = *data; | |
232 | ||
73bb1da6 PT |
233 | if (obd->obd_proc_private != NULL) { |
234 | lmv_proc_dir = obd->obd_proc_private; | |
235 | } else { | |
236 | lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry, | |
237 | NULL, NULL); | |
238 | if (IS_ERR(lmv_proc_dir)) { | |
239 | CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.", | |
240 | obd->obd_type->typ_name, obd->obd_name); | |
241 | lmv_proc_dir = NULL; | |
242 | } | |
243 | obd->obd_proc_private = lmv_proc_dir; | |
d7e09d03 PT |
244 | } |
245 | ||
246 | /* | |
247 | * All real clients should perform actual connection right away, because | |
248 | * it is possible, that LMV will not have opportunity to connect targets | |
249 | * and MDC stuff will be called directly, for instance while reading | |
250 | * ../mdc/../kbytesfree procfs file, etc. | |
251 | */ | |
252 | if (data->ocd_connect_flags & OBD_CONNECT_REAL) | |
253 | rc = lmv_check_connect(obd); | |
254 | ||
73bb1da6 PT |
255 | if (rc && lmv_proc_dir) { |
256 | lprocfs_remove(&lmv_proc_dir); | |
257 | obd->obd_proc_private = NULL; | |
d7e09d03 PT |
258 | } |
259 | ||
0a3bdb00 | 260 | return rc; |
d7e09d03 PT |
261 | } |
262 | ||
263 | static void lmv_set_timeouts(struct obd_device *obd) | |
264 | { | |
265 | struct lmv_tgt_desc *tgt; | |
266 | struct lmv_obd *lmv; | |
267 | int i; | |
268 | ||
269 | lmv = &obd->u.lmv; | |
270 | if (lmv->server_timeout == 0) | |
271 | return; | |
272 | ||
273 | if (lmv->connected == 0) | |
274 | return; | |
275 | ||
276 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
277 | tgt = lmv->tgts[i]; | |
278 | if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0) | |
279 | continue; | |
280 | ||
281 | obd_set_info_async(NULL, tgt->ltd_exp, sizeof(KEY_INTERMDS), | |
282 | KEY_INTERMDS, 0, NULL, NULL); | |
283 | } | |
284 | } | |
285 | ||
286 | static int lmv_init_ea_size(struct obd_export *exp, int easize, | |
44779340 | 287 | int def_easize, int cookiesize, int def_cookiesize) |
d7e09d03 PT |
288 | { |
289 | struct obd_device *obd = exp->exp_obd; | |
290 | struct lmv_obd *lmv = &obd->u.lmv; | |
291 | int i; | |
292 | int rc = 0; | |
293 | int change = 0; | |
d7e09d03 PT |
294 | |
295 | if (lmv->max_easize < easize) { | |
296 | lmv->max_easize = easize; | |
297 | change = 1; | |
298 | } | |
299 | if (lmv->max_def_easize < def_easize) { | |
300 | lmv->max_def_easize = def_easize; | |
301 | change = 1; | |
302 | } | |
303 | if (lmv->max_cookiesize < cookiesize) { | |
304 | lmv->max_cookiesize = cookiesize; | |
305 | change = 1; | |
306 | } | |
44779340 BB |
307 | if (lmv->max_def_cookiesize < def_cookiesize) { |
308 | lmv->max_def_cookiesize = def_cookiesize; | |
309 | change = 1; | |
310 | } | |
d7e09d03 | 311 | if (change == 0) |
0a3bdb00 | 312 | return 0; |
d7e09d03 PT |
313 | |
314 | if (lmv->connected == 0) | |
0a3bdb00 | 315 | return 0; |
d7e09d03 PT |
316 | |
317 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
318 | if (lmv->tgts[i] == NULL || | |
319 | lmv->tgts[i]->ltd_exp == NULL || | |
320 | lmv->tgts[i]->ltd_active == 0) { | |
321 | CWARN("%s: NULL export for %d\n", obd->obd_name, i); | |
322 | continue; | |
323 | } | |
324 | ||
325 | rc = md_init_ea_size(lmv->tgts[i]->ltd_exp, easize, def_easize, | |
44779340 | 326 | cookiesize, def_cookiesize); |
d7e09d03 | 327 | if (rc) { |
2d00bd17 JP |
328 | CERROR("%s: obd_init_ea_size() failed on MDT target %d: rc = %d.\n", |
329 | obd->obd_name, i, rc); | |
d7e09d03 PT |
330 | break; |
331 | } | |
332 | } | |
0a3bdb00 | 333 | return rc; |
d7e09d03 PT |
334 | } |
335 | ||
336 | #define MAX_STRING_SIZE 128 | |
337 | ||
5dc8d7b4 | 338 | static int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) |
d7e09d03 PT |
339 | { |
340 | struct proc_dir_entry *lmv_proc_dir; | |
341 | struct lmv_obd *lmv = &obd->u.lmv; | |
342 | struct obd_uuid *cluuid = &lmv->cluuid; | |
343 | struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" }; | |
344 | struct obd_device *mdc_obd; | |
345 | struct obd_export *mdc_exp; | |
346 | struct lu_fld_target target; | |
347 | int rc; | |
d7e09d03 PT |
348 | |
349 | mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME, | |
350 | &obd->obd_uuid); | |
351 | if (!mdc_obd) { | |
352 | CERROR("target %s not attached\n", tgt->ltd_uuid.uuid); | |
0a3bdb00 | 353 | return -EINVAL; |
d7e09d03 PT |
354 | } |
355 | ||
356 | CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n", | |
357 | mdc_obd->obd_name, mdc_obd->obd_uuid.uuid, | |
358 | tgt->ltd_uuid.uuid, obd->obd_uuid.uuid, | |
359 | cluuid->uuid); | |
360 | ||
361 | if (!mdc_obd->obd_set_up) { | |
362 | CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid); | |
0a3bdb00 | 363 | return -EINVAL; |
d7e09d03 PT |
364 | } |
365 | ||
366 | rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid, | |
367 | &lmv->conn_data, NULL); | |
368 | if (rc) { | |
369 | CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc); | |
0a3bdb00 | 370 | return rc; |
d7e09d03 PT |
371 | } |
372 | ||
373 | /* | |
374 | * Init fid sequence client for this mdc and add new fld target. | |
375 | */ | |
376 | rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA); | |
377 | if (rc) | |
0a3bdb00 | 378 | return rc; |
d7e09d03 PT |
379 | |
380 | target.ft_srv = NULL; | |
381 | target.ft_exp = mdc_exp; | |
382 | target.ft_idx = tgt->ltd_idx; | |
383 | ||
384 | fld_client_add_target(&lmv->lmv_fld, &target); | |
385 | ||
386 | rc = obd_register_observer(mdc_obd, obd); | |
387 | if (rc) { | |
388 | obd_disconnect(mdc_exp); | |
389 | CERROR("target %s register_observer error %d\n", | |
390 | tgt->ltd_uuid.uuid, rc); | |
0a3bdb00 | 391 | return rc; |
d7e09d03 PT |
392 | } |
393 | ||
394 | if (obd->obd_observer) { | |
395 | /* | |
396 | * Tell the observer about the new target. | |
397 | */ | |
398 | rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd, | |
399 | OBD_NOTIFY_ACTIVE, | |
400 | (void *)(tgt - lmv->tgts[0])); | |
401 | if (rc) { | |
402 | obd_disconnect(mdc_exp); | |
0a3bdb00 | 403 | return rc; |
d7e09d03 PT |
404 | } |
405 | } | |
406 | ||
407 | tgt->ltd_active = 1; | |
408 | tgt->ltd_exp = mdc_exp; | |
409 | lmv->desc.ld_active_tgt_count++; | |
410 | ||
44779340 BB |
411 | md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize, |
412 | lmv->max_cookiesize, lmv->max_def_cookiesize); | |
d7e09d03 PT |
413 | |
414 | CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n", | |
415 | mdc_obd->obd_name, mdc_obd->obd_uuid.uuid, | |
416 | atomic_read(&obd->obd_refcount)); | |
417 | ||
73bb1da6 | 418 | lmv_proc_dir = obd->obd_proc_private; |
d7e09d03 PT |
419 | if (lmv_proc_dir) { |
420 | struct proc_dir_entry *mdc_symlink; | |
421 | ||
422 | LASSERT(mdc_obd->obd_type != NULL); | |
423 | LASSERT(mdc_obd->obd_type->typ_name != NULL); | |
424 | mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name, | |
425 | lmv_proc_dir, | |
426 | "../../../%s/%s", | |
427 | mdc_obd->obd_type->typ_name, | |
428 | mdc_obd->obd_name); | |
429 | if (mdc_symlink == NULL) { | |
2d00bd17 | 430 | CERROR("Could not register LMV target /proc/fs/lustre/%s/%s/target_obds/%s.", |
d7e09d03 PT |
431 | obd->obd_type->typ_name, obd->obd_name, |
432 | mdc_obd->obd_name); | |
433 | lprocfs_remove(&lmv_proc_dir); | |
73bb1da6 | 434 | obd->obd_proc_private = NULL; |
d7e09d03 PT |
435 | } |
436 | } | |
0a3bdb00 | 437 | return 0; |
d7e09d03 PT |
438 | } |
439 | ||
440 | static void lmv_del_target(struct lmv_obd *lmv, int index) | |
441 | { | |
442 | if (lmv->tgts[index] == NULL) | |
443 | return; | |
444 | ||
8bcf30c3 | 445 | kfree(lmv->tgts[index]); |
d7e09d03 PT |
446 | lmv->tgts[index] = NULL; |
447 | return; | |
448 | } | |
449 | ||
450 | static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp, | |
451 | __u32 index, int gen) | |
452 | { | |
453 | struct lmv_obd *lmv = &obd->u.lmv; | |
454 | struct lmv_tgt_desc *tgt; | |
455 | int rc = 0; | |
d7e09d03 PT |
456 | |
457 | CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index); | |
458 | ||
459 | lmv_init_lock(lmv); | |
460 | ||
461 | if (lmv->desc.ld_tgt_count == 0) { | |
462 | struct obd_device *mdc_obd; | |
463 | ||
464 | mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, | |
465 | &obd->obd_uuid); | |
466 | if (!mdc_obd) { | |
467 | lmv_init_unlock(lmv); | |
468 | CERROR("%s: Target %s not attached: rc = %d\n", | |
469 | obd->obd_name, uuidp->uuid, -EINVAL); | |
0a3bdb00 | 470 | return -EINVAL; |
d7e09d03 PT |
471 | } |
472 | } | |
473 | ||
474 | if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) { | |
475 | tgt = lmv->tgts[index]; | |
2d00bd17 JP |
476 | CERROR("%s: UUID %s already assigned at LOV target index %d: rc = %d\n", |
477 | obd->obd_name, | |
d7e09d03 PT |
478 | obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST); |
479 | lmv_init_unlock(lmv); | |
0a3bdb00 | 480 | return -EEXIST; |
d7e09d03 PT |
481 | } |
482 | ||
483 | if (index >= lmv->tgts_size) { | |
484 | /* We need to reallocate the lmv target array. */ | |
485 | struct lmv_tgt_desc **newtgts, **old = NULL; | |
486 | __u32 newsize = 1; | |
487 | __u32 oldsize = 0; | |
488 | ||
489 | while (newsize < index + 1) | |
302727b6 | 490 | newsize <<= 1; |
8bcf30c3 | 491 | newtgts = kcalloc(newsize, sizeof(*newtgts), GFP_NOFS); |
d7e09d03 PT |
492 | if (newtgts == NULL) { |
493 | lmv_init_unlock(lmv); | |
0a3bdb00 | 494 | return -ENOMEM; |
d7e09d03 PT |
495 | } |
496 | ||
497 | if (lmv->tgts_size) { | |
498 | memcpy(newtgts, lmv->tgts, | |
499 | sizeof(*newtgts) * lmv->tgts_size); | |
500 | old = lmv->tgts; | |
501 | oldsize = lmv->tgts_size; | |
502 | } | |
503 | ||
504 | lmv->tgts = newtgts; | |
505 | lmv->tgts_size = newsize; | |
506 | smp_rmb(); | |
507 | if (old) | |
8bcf30c3 | 508 | kfree(old); |
d7e09d03 PT |
509 | |
510 | CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts, | |
511 | lmv->tgts_size); | |
512 | } | |
513 | ||
8bcf30c3 | 514 | tgt = kzalloc(sizeof(*tgt), GFP_NOFS); |
d7e09d03 PT |
515 | if (!tgt) { |
516 | lmv_init_unlock(lmv); | |
0a3bdb00 | 517 | return -ENOMEM; |
d7e09d03 PT |
518 | } |
519 | ||
520 | mutex_init(&tgt->ltd_fid_mutex); | |
521 | tgt->ltd_idx = index; | |
522 | tgt->ltd_uuid = *uuidp; | |
523 | tgt->ltd_active = 0; | |
524 | lmv->tgts[index] = tgt; | |
525 | if (index >= lmv->desc.ld_tgt_count) | |
526 | lmv->desc.ld_tgt_count = index + 1; | |
527 | ||
528 | if (lmv->connected) { | |
529 | rc = lmv_connect_mdc(obd, tgt); | |
530 | if (rc) { | |
531 | spin_lock(&lmv->lmv_lock); | |
532 | lmv->desc.ld_tgt_count--; | |
533 | memset(tgt, 0, sizeof(*tgt)); | |
534 | spin_unlock(&lmv->lmv_lock); | |
535 | } else { | |
536 | int easize = sizeof(struct lmv_stripe_md) + | |
44779340 BB |
537 | lmv->desc.ld_tgt_count * sizeof(struct lu_fid); |
538 | lmv_init_ea_size(obd->obd_self_export, easize, 0, 0, 0); | |
d7e09d03 PT |
539 | } |
540 | } | |
541 | ||
542 | lmv_init_unlock(lmv); | |
0a3bdb00 | 543 | return rc; |
d7e09d03 PT |
544 | } |
545 | ||
546 | int lmv_check_connect(struct obd_device *obd) | |
547 | { | |
548 | struct lmv_obd *lmv = &obd->u.lmv; | |
549 | struct lmv_tgt_desc *tgt; | |
550 | int i; | |
551 | int rc; | |
552 | int easize; | |
d7e09d03 PT |
553 | |
554 | if (lmv->connected) | |
0a3bdb00 | 555 | return 0; |
d7e09d03 PT |
556 | |
557 | lmv_init_lock(lmv); | |
558 | if (lmv->connected) { | |
559 | lmv_init_unlock(lmv); | |
0a3bdb00 | 560 | return 0; |
d7e09d03 PT |
561 | } |
562 | ||
563 | if (lmv->desc.ld_tgt_count == 0) { | |
564 | lmv_init_unlock(lmv); | |
565 | CERROR("%s: no targets configured.\n", obd->obd_name); | |
0a3bdb00 | 566 | return -EINVAL; |
d7e09d03 PT |
567 | } |
568 | ||
569 | CDEBUG(D_CONFIG, "Time to connect %s to %s\n", | |
570 | lmv->cluuid.uuid, obd->obd_name); | |
571 | ||
572 | LASSERT(lmv->tgts != NULL); | |
573 | ||
574 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
575 | tgt = lmv->tgts[i]; | |
576 | if (tgt == NULL) | |
577 | continue; | |
578 | rc = lmv_connect_mdc(obd, tgt); | |
579 | if (rc) | |
4d54556f | 580 | goto out_disc; |
d7e09d03 PT |
581 | } |
582 | ||
583 | lmv_set_timeouts(obd); | |
584 | class_export_put(lmv->exp); | |
585 | lmv->connected = 1; | |
586 | easize = lmv_get_easize(lmv); | |
44779340 | 587 | lmv_init_ea_size(obd->obd_self_export, easize, 0, 0, 0); |
d7e09d03 | 588 | lmv_init_unlock(lmv); |
0a3bdb00 | 589 | return 0; |
d7e09d03 PT |
590 | |
591 | out_disc: | |
592 | while (i-- > 0) { | |
593 | int rc2; | |
594 | tgt = lmv->tgts[i]; | |
595 | if (tgt == NULL) | |
596 | continue; | |
597 | tgt->ltd_active = 0; | |
598 | if (tgt->ltd_exp) { | |
599 | --lmv->desc.ld_active_tgt_count; | |
600 | rc2 = obd_disconnect(tgt->ltd_exp); | |
601 | if (rc2) { | |
2d00bd17 | 602 | CERROR("LMV target %s disconnect on MDC idx %d: error %d\n", |
d7e09d03 PT |
603 | tgt->ltd_uuid.uuid, i, rc2); |
604 | } | |
605 | } | |
606 | } | |
607 | class_disconnect(lmv->exp); | |
608 | lmv_init_unlock(lmv); | |
0a3bdb00 | 609 | return rc; |
d7e09d03 PT |
610 | } |
611 | ||
612 | static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) | |
613 | { | |
614 | struct proc_dir_entry *lmv_proc_dir; | |
615 | struct lmv_obd *lmv = &obd->u.lmv; | |
616 | struct obd_device *mdc_obd; | |
617 | int rc; | |
d7e09d03 PT |
618 | |
619 | LASSERT(tgt != NULL); | |
620 | LASSERT(obd != NULL); | |
621 | ||
622 | mdc_obd = class_exp2obd(tgt->ltd_exp); | |
623 | ||
624 | if (mdc_obd) { | |
625 | mdc_obd->obd_force = obd->obd_force; | |
626 | mdc_obd->obd_fail = obd->obd_fail; | |
627 | mdc_obd->obd_no_recov = obd->obd_no_recov; | |
628 | } | |
629 | ||
73bb1da6 PT |
630 | lmv_proc_dir = obd->obd_proc_private; |
631 | if (lmv_proc_dir) | |
632 | lprocfs_remove_proc_entry(mdc_obd->obd_name, lmv_proc_dir); | |
d7e09d03 | 633 | |
d7e09d03 PT |
634 | rc = obd_fid_fini(tgt->ltd_exp->exp_obd); |
635 | if (rc) | |
b64767de | 636 | CERROR("Can't finalize fids factory\n"); |
d7e09d03 PT |
637 | |
638 | CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n", | |
639 | tgt->ltd_exp->exp_obd->obd_name, | |
640 | tgt->ltd_exp->exp_obd->obd_uuid.uuid); | |
641 | ||
642 | obd_register_observer(tgt->ltd_exp->exp_obd, NULL); | |
643 | rc = obd_disconnect(tgt->ltd_exp); | |
644 | if (rc) { | |
645 | if (tgt->ltd_active) { | |
646 | CERROR("Target %s disconnect error %d\n", | |
647 | tgt->ltd_uuid.uuid, rc); | |
648 | } | |
649 | } | |
650 | ||
651 | lmv_activate_target(lmv, tgt, 0); | |
652 | tgt->ltd_exp = NULL; | |
0a3bdb00 | 653 | return 0; |
d7e09d03 PT |
654 | } |
655 | ||
656 | static int lmv_disconnect(struct obd_export *exp) | |
657 | { | |
658 | struct obd_device *obd = class_exp2obd(exp); | |
d7e09d03 PT |
659 | struct lmv_obd *lmv = &obd->u.lmv; |
660 | int rc; | |
661 | int i; | |
d7e09d03 PT |
662 | |
663 | if (!lmv->tgts) | |
664 | goto out_local; | |
665 | ||
666 | /* | |
667 | * Only disconnect the underlying layers on the final disconnect. | |
668 | */ | |
669 | lmv->refcount--; | |
670 | if (lmv->refcount != 0) | |
671 | goto out_local; | |
672 | ||
673 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
674 | if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) | |
675 | continue; | |
676 | ||
677 | lmv_disconnect_mdc(obd, lmv->tgts[i]); | |
678 | } | |
679 | ||
73bb1da6 | 680 | if (obd->obd_proc_private) |
b59fe845 | 681 | lprocfs_remove((struct proc_dir_entry **)&obd->obd_proc_private); |
73bb1da6 | 682 | else |
d7e09d03 PT |
683 | CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n", |
684 | obd->obd_type->typ_name, obd->obd_name); | |
d7e09d03 PT |
685 | |
686 | out_local: | |
687 | /* | |
688 | * This is the case when no real connection is established by | |
689 | * lmv_check_connect(). | |
690 | */ | |
691 | if (!lmv->connected) | |
692 | class_export_put(exp); | |
693 | rc = class_disconnect(exp); | |
694 | if (lmv->refcount == 0) | |
695 | lmv->connected = 0; | |
0a3bdb00 | 696 | return rc; |
d7e09d03 PT |
697 | } |
698 | ||
699 | static int lmv_fid2path(struct obd_export *exp, int len, void *karg, void *uarg) | |
700 | { | |
701 | struct obd_device *obddev = class_exp2obd(exp); | |
702 | struct lmv_obd *lmv = &obddev->u.lmv; | |
703 | struct getinfo_fid2path *gf; | |
704 | struct lmv_tgt_desc *tgt; | |
705 | struct getinfo_fid2path *remote_gf = NULL; | |
706 | int remote_gf_size = 0; | |
707 | int rc; | |
708 | ||
709 | gf = (struct getinfo_fid2path *)karg; | |
710 | tgt = lmv_find_target(lmv, &gf->gf_fid); | |
711 | if (IS_ERR(tgt)) | |
0a3bdb00 | 712 | return PTR_ERR(tgt); |
d7e09d03 PT |
713 | |
714 | repeat_fid2path: | |
715 | rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg); | |
716 | if (rc != 0 && rc != -EREMOTE) | |
4d54556f | 717 | goto out_fid2path; |
d7e09d03 PT |
718 | |
719 | /* If remote_gf != NULL, it means just building the | |
b64767de | 720 | * path on the remote MDT, copy this path segment to gf */ |
d7e09d03 PT |
721 | if (remote_gf != NULL) { |
722 | struct getinfo_fid2path *ori_gf; | |
723 | char *ptr; | |
724 | ||
725 | ori_gf = (struct getinfo_fid2path *)karg; | |
726 | if (strlen(ori_gf->gf_path) + | |
4d54556f JL |
727 | strlen(gf->gf_path) > ori_gf->gf_pathlen) { |
728 | rc = -EOVERFLOW; | |
729 | goto out_fid2path; | |
730 | } | |
d7e09d03 PT |
731 | |
732 | ptr = ori_gf->gf_path; | |
733 | ||
734 | memmove(ptr + strlen(gf->gf_path) + 1, ptr, | |
735 | strlen(ori_gf->gf_path)); | |
736 | ||
737 | strncpy(ptr, gf->gf_path, strlen(gf->gf_path)); | |
738 | ptr += strlen(gf->gf_path); | |
739 | *ptr = '/'; | |
740 | } | |
741 | ||
b0f5aad5 | 742 | CDEBUG(D_INFO, "%s: get path %s "DFID" rec: %llu ln: %u\n", |
d7e09d03 PT |
743 | tgt->ltd_exp->exp_obd->obd_name, |
744 | gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno, | |
745 | gf->gf_linkno); | |
746 | ||
747 | if (rc == 0) | |
4d54556f | 748 | goto out_fid2path; |
d7e09d03 PT |
749 | |
750 | /* sigh, has to go to another MDT to do path building further */ | |
751 | if (remote_gf == NULL) { | |
752 | remote_gf_size = sizeof(*remote_gf) + PATH_MAX; | |
8bcf30c3 | 753 | remote_gf = kzalloc(remote_gf_size, GFP_NOFS); |
4d54556f JL |
754 | if (remote_gf == NULL) { |
755 | rc = -ENOMEM; | |
756 | goto out_fid2path; | |
757 | } | |
d7e09d03 PT |
758 | remote_gf->gf_pathlen = PATH_MAX; |
759 | } | |
760 | ||
761 | if (!fid_is_sane(&gf->gf_fid)) { | |
762 | CERROR("%s: invalid FID "DFID": rc = %d\n", | |
763 | tgt->ltd_exp->exp_obd->obd_name, | |
764 | PFID(&gf->gf_fid), -EINVAL); | |
4d54556f JL |
765 | rc = -EINVAL; |
766 | goto out_fid2path; | |
d7e09d03 PT |
767 | } |
768 | ||
769 | tgt = lmv_find_target(lmv, &gf->gf_fid); | |
4d54556f JL |
770 | if (IS_ERR(tgt)) { |
771 | rc = -EINVAL; | |
772 | goto out_fid2path; | |
773 | } | |
d7e09d03 PT |
774 | |
775 | remote_gf->gf_fid = gf->gf_fid; | |
776 | remote_gf->gf_recno = -1; | |
777 | remote_gf->gf_linkno = -1; | |
778 | memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen); | |
779 | gf = remote_gf; | |
780 | goto repeat_fid2path; | |
781 | ||
782 | out_fid2path: | |
783 | if (remote_gf != NULL) | |
8bcf30c3 | 784 | kfree(remote_gf); |
0a3bdb00 | 785 | return rc; |
d7e09d03 PT |
786 | } |
787 | ||
78eb9092 TL |
788 | static int lmv_hsm_req_count(struct lmv_obd *lmv, |
789 | const struct hsm_user_request *hur, | |
790 | const struct lmv_tgt_desc *tgt_mds) | |
791 | { | |
792 | int i, nr = 0; | |
793 | struct lmv_tgt_desc *curr_tgt; | |
794 | ||
795 | /* count how many requests must be sent to the given target */ | |
796 | for (i = 0; i < hur->hur_request.hr_itemcount; i++) { | |
797 | curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid); | |
798 | if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) | |
799 | nr++; | |
800 | } | |
801 | return nr; | |
802 | } | |
803 | ||
804 | static void lmv_hsm_req_build(struct lmv_obd *lmv, | |
805 | struct hsm_user_request *hur_in, | |
806 | const struct lmv_tgt_desc *tgt_mds, | |
807 | struct hsm_user_request *hur_out) | |
808 | { | |
809 | int i, nr_out; | |
810 | struct lmv_tgt_desc *curr_tgt; | |
811 | ||
812 | /* build the hsm_user_request for the given target */ | |
813 | hur_out->hur_request = hur_in->hur_request; | |
814 | nr_out = 0; | |
815 | for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) { | |
816 | curr_tgt = lmv_find_target(lmv, | |
817 | &hur_in->hur_user_item[i].hui_fid); | |
818 | if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) { | |
819 | hur_out->hur_user_item[nr_out] = | |
820 | hur_in->hur_user_item[i]; | |
821 | nr_out++; | |
822 | } | |
823 | } | |
824 | hur_out->hur_request.hr_itemcount = nr_out; | |
825 | memcpy(hur_data(hur_out), hur_data(hur_in), | |
826 | hur_in->hur_request.hr_data_len); | |
827 | } | |
828 | ||
829 | static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len, | |
830 | struct lustre_kernelcomm *lk, void *uarg) | |
831 | { | |
832 | int i, rc = 0; | |
78eb9092 TL |
833 | |
834 | /* unregister request (call from llapi_hsm_copytool_fini) */ | |
835 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
836 | /* best effort: try to clean as much as possible | |
837 | * (continue on error) */ | |
838 | obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, lk, uarg); | |
839 | } | |
840 | ||
841 | /* Whatever the result, remove copytool from kuc groups. | |
842 | * Unreached coordinators will get EPIPE on next requests | |
843 | * and will unregister automatically. | |
844 | */ | |
845 | rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group); | |
0a3bdb00 | 846 | return rc; |
78eb9092 TL |
847 | } |
848 | ||
849 | static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len, | |
850 | struct lustre_kernelcomm *lk, void *uarg) | |
851 | { | |
852 | struct file *filp; | |
853 | int i, j, err; | |
854 | int rc = 0; | |
855 | bool any_set = false; | |
78eb9092 TL |
856 | |
857 | /* All or nothing: try to register to all MDS. | |
858 | * In case of failure, unregister from previous MDS, | |
859 | * except if it because of inactive target. */ | |
860 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
861 | err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, | |
862 | len, lk, uarg); | |
863 | if (err) { | |
864 | if (lmv->tgts[i]->ltd_active) { | |
865 | /* permanent error */ | |
2d00bd17 JP |
866 | CERROR("error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n", |
867 | lmv->tgts[i]->ltd_uuid.uuid, | |
868 | i, cmd, err); | |
78eb9092 TL |
869 | rc = err; |
870 | lk->lk_flags |= LK_FLG_STOP; | |
871 | /* unregister from previous MDS */ | |
872 | for (j = 0; j < i; j++) | |
873 | obd_iocontrol(cmd, | |
874 | lmv->tgts[j]->ltd_exp, | |
875 | len, lk, uarg); | |
0a3bdb00 | 876 | return rc; |
78eb9092 TL |
877 | } |
878 | /* else: transient error. | |
879 | * kuc will register to the missing MDT | |
880 | * when it is back */ | |
881 | } else { | |
882 | any_set = true; | |
883 | } | |
884 | } | |
885 | ||
886 | if (!any_set) | |
887 | /* no registration done: return error */ | |
0a3bdb00 | 888 | return -ENOTCONN; |
78eb9092 TL |
889 | |
890 | /* at least one registration done, with no failure */ | |
891 | filp = fget(lk->lk_wfd); | |
892 | if (filp == NULL) { | |
0a3bdb00 | 893 | return -EBADF; |
78eb9092 TL |
894 | } |
895 | rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group, lk->lk_data); | |
896 | if (rc != 0 && filp != NULL) | |
897 | fput(filp); | |
0a3bdb00 | 898 | return rc; |
78eb9092 TL |
899 | } |
900 | ||
901 | ||
902 | ||
903 | ||
d7e09d03 PT |
904 | static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp, |
905 | int len, void *karg, void *uarg) | |
906 | { | |
907 | struct obd_device *obddev = class_exp2obd(exp); | |
908 | struct lmv_obd *lmv = &obddev->u.lmv; | |
909 | int i = 0; | |
910 | int rc = 0; | |
911 | int set = 0; | |
912 | int count = lmv->desc.ld_tgt_count; | |
d7e09d03 PT |
913 | |
914 | if (count == 0) | |
0a3bdb00 | 915 | return -ENOTTY; |
d7e09d03 PT |
916 | |
917 | switch (cmd) { | |
918 | case IOC_OBD_STATFS: { | |
919 | struct obd_ioctl_data *data = karg; | |
920 | struct obd_device *mdc_obd; | |
921 | struct obd_statfs stat_buf = {0}; | |
922 | __u32 index; | |
923 | ||
924 | memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); | |
dbd18138 | 925 | if (index >= count) |
0a3bdb00 | 926 | return -ENODEV; |
d7e09d03 PT |
927 | |
928 | if (lmv->tgts[index] == NULL || | |
929 | lmv->tgts[index]->ltd_active == 0) | |
0a3bdb00 | 930 | return -ENODATA; |
d7e09d03 PT |
931 | |
932 | mdc_obd = class_exp2obd(lmv->tgts[index]->ltd_exp); | |
933 | if (!mdc_obd) | |
0a3bdb00 | 934 | return -EINVAL; |
d7e09d03 PT |
935 | |
936 | /* copy UUID */ | |
937 | if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd), | |
938 | min((int) data->ioc_plen2, | |
939 | (int) sizeof(struct obd_uuid)))) | |
0a3bdb00 | 940 | return -EFAULT; |
d7e09d03 PT |
941 | |
942 | rc = obd_statfs(NULL, lmv->tgts[index]->ltd_exp, &stat_buf, | |
943 | cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), | |
944 | 0); | |
945 | if (rc) | |
0a3bdb00 | 946 | return rc; |
d7e09d03 PT |
947 | if (copy_to_user(data->ioc_pbuf1, &stat_buf, |
948 | min((int) data->ioc_plen1, | |
949 | (int) sizeof(stat_buf)))) | |
0a3bdb00 | 950 | return -EFAULT; |
d7e09d03 PT |
951 | break; |
952 | } | |
953 | case OBD_IOC_QUOTACTL: { | |
954 | struct if_quotactl *qctl = karg; | |
955 | struct lmv_tgt_desc *tgt = NULL; | |
956 | struct obd_quotactl *oqctl; | |
957 | ||
958 | if (qctl->qc_valid == QC_MDTIDX) { | |
959 | if (qctl->qc_idx < 0 || count <= qctl->qc_idx) | |
0a3bdb00 | 960 | return -EINVAL; |
d7e09d03 PT |
961 | |
962 | tgt = lmv->tgts[qctl->qc_idx]; | |
963 | if (tgt == NULL || tgt->ltd_exp == NULL) | |
0a3bdb00 | 964 | return -EINVAL; |
d7e09d03 PT |
965 | } else if (qctl->qc_valid == QC_UUID) { |
966 | for (i = 0; i < count; i++) { | |
967 | tgt = lmv->tgts[i]; | |
968 | if (tgt == NULL) | |
969 | continue; | |
970 | if (!obd_uuid_equals(&tgt->ltd_uuid, | |
971 | &qctl->obd_uuid)) | |
972 | continue; | |
973 | ||
974 | if (tgt->ltd_exp == NULL) | |
0a3bdb00 | 975 | return -EINVAL; |
d7e09d03 PT |
976 | |
977 | break; | |
978 | } | |
979 | } else { | |
0a3bdb00 | 980 | return -EINVAL; |
d7e09d03 PT |
981 | } |
982 | ||
983 | if (i >= count) | |
0a3bdb00 | 984 | return -EAGAIN; |
d7e09d03 PT |
985 | |
986 | LASSERT(tgt && tgt->ltd_exp); | |
8bcf30c3 | 987 | oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); |
d7e09d03 | 988 | if (!oqctl) |
0a3bdb00 | 989 | return -ENOMEM; |
d7e09d03 PT |
990 | |
991 | QCTL_COPY(oqctl, qctl); | |
992 | rc = obd_quotactl(tgt->ltd_exp, oqctl); | |
993 | if (rc == 0) { | |
994 | QCTL_COPY(qctl, oqctl); | |
995 | qctl->qc_valid = QC_MDTIDX; | |
996 | qctl->obd_uuid = tgt->ltd_uuid; | |
997 | } | |
8bcf30c3 | 998 | kfree(oqctl); |
d7e09d03 PT |
999 | break; |
1000 | } | |
1001 | case OBD_IOC_CHANGELOG_SEND: | |
1002 | case OBD_IOC_CHANGELOG_CLEAR: { | |
1003 | struct ioc_changelog *icc = karg; | |
1004 | ||
1005 | if (icc->icc_mdtindex >= count) | |
0a3bdb00 | 1006 | return -ENODEV; |
d7e09d03 PT |
1007 | |
1008 | if (lmv->tgts[icc->icc_mdtindex] == NULL || | |
1009 | lmv->tgts[icc->icc_mdtindex]->ltd_exp == NULL || | |
1010 | lmv->tgts[icc->icc_mdtindex]->ltd_active == 0) | |
0a3bdb00 | 1011 | return -ENODEV; |
d7e09d03 PT |
1012 | rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex]->ltd_exp, |
1013 | sizeof(*icc), icc, NULL); | |
1014 | break; | |
1015 | } | |
1016 | case LL_IOC_GET_CONNECT_FLAGS: { | |
1017 | if (lmv->tgts[0] == NULL) | |
0a3bdb00 | 1018 | return -ENODATA; |
d7e09d03 PT |
1019 | rc = obd_iocontrol(cmd, lmv->tgts[0]->ltd_exp, len, karg, uarg); |
1020 | break; | |
1021 | } | |
1022 | case OBD_IOC_FID2PATH: { | |
1023 | rc = lmv_fid2path(exp, len, karg, uarg); | |
1024 | break; | |
1025 | } | |
1026 | case LL_IOC_HSM_STATE_GET: | |
1027 | case LL_IOC_HSM_STATE_SET: | |
78eb9092 TL |
1028 | case LL_IOC_HSM_ACTION: { |
1029 | struct md_op_data *op_data = karg; | |
1030 | struct lmv_tgt_desc *tgt; | |
1031 | ||
1032 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
1033 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1034 | return PTR_ERR(tgt); |
78eb9092 TL |
1035 | |
1036 | if (tgt->ltd_exp == NULL) | |
0a3bdb00 | 1037 | return -EINVAL; |
78eb9092 TL |
1038 | |
1039 | rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); | |
1040 | break; | |
1041 | } | |
1042 | case LL_IOC_HSM_PROGRESS: { | |
1043 | const struct hsm_progress_kernel *hpk = karg; | |
1044 | struct lmv_tgt_desc *tgt; | |
1045 | ||
1046 | tgt = lmv_find_target(lmv, &hpk->hpk_fid); | |
1047 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1048 | return PTR_ERR(tgt); |
78eb9092 TL |
1049 | rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); |
1050 | break; | |
1051 | } | |
1052 | case LL_IOC_HSM_REQUEST: { | |
1053 | struct hsm_user_request *hur = karg; | |
1054 | struct lmv_tgt_desc *tgt; | |
1055 | unsigned int reqcount = hur->hur_request.hr_itemcount; | |
1056 | ||
1057 | if (reqcount == 0) | |
0a3bdb00 | 1058 | return 0; |
78eb9092 TL |
1059 | |
1060 | /* if the request is about a single fid | |
1061 | * or if there is a single MDS, no need to split | |
1062 | * the request. */ | |
1063 | if (reqcount == 1 || count == 1) { | |
1064 | tgt = lmv_find_target(lmv, | |
1065 | &hur->hur_user_item[0].hui_fid); | |
1066 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1067 | return PTR_ERR(tgt); |
78eb9092 TL |
1068 | rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); |
1069 | } else { | |
1070 | /* split fid list to their respective MDS */ | |
1071 | for (i = 0; i < count; i++) { | |
1072 | unsigned int nr, reqlen; | |
1073 | int rc1; | |
1074 | struct hsm_user_request *req; | |
1075 | ||
1076 | nr = lmv_hsm_req_count(lmv, hur, lmv->tgts[i]); | |
1077 | if (nr == 0) /* nothing for this MDS */ | |
1078 | continue; | |
1079 | ||
1080 | /* build a request with fids for this MDS */ | |
1081 | reqlen = offsetof(typeof(*hur), | |
1082 | hur_user_item[nr]) | |
1083 | + hur->hur_request.hr_data_len; | |
1084 | OBD_ALLOC_LARGE(req, reqlen); | |
1085 | if (req == NULL) | |
0a3bdb00 | 1086 | return -ENOMEM; |
78eb9092 TL |
1087 | |
1088 | lmv_hsm_req_build(lmv, hur, lmv->tgts[i], req); | |
1089 | ||
1090 | rc1 = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, | |
1091 | reqlen, req, uarg); | |
1092 | if (rc1 != 0 && rc == 0) | |
1093 | rc = rc1; | |
1094 | OBD_FREE_LARGE(req, reqlen); | |
1095 | } | |
1096 | } | |
1097 | break; | |
1098 | } | |
d7e09d03 PT |
1099 | case LL_IOC_LOV_SWAP_LAYOUTS: { |
1100 | struct md_op_data *op_data = karg; | |
1101 | struct lmv_tgt_desc *tgt1, *tgt2; | |
1102 | ||
1103 | tgt1 = lmv_find_target(lmv, &op_data->op_fid1); | |
1104 | if (IS_ERR(tgt1)) | |
0a3bdb00 | 1105 | return PTR_ERR(tgt1); |
d7e09d03 PT |
1106 | |
1107 | tgt2 = lmv_find_target(lmv, &op_data->op_fid2); | |
1108 | if (IS_ERR(tgt2)) | |
0a3bdb00 | 1109 | return PTR_ERR(tgt2); |
d7e09d03 PT |
1110 | |
1111 | if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL)) | |
0a3bdb00 | 1112 | return -EINVAL; |
d7e09d03 PT |
1113 | |
1114 | /* only files on same MDT can have their layouts swapped */ | |
1115 | if (tgt1->ltd_idx != tgt2->ltd_idx) | |
0a3bdb00 | 1116 | return -EPERM; |
d7e09d03 PT |
1117 | |
1118 | rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg); | |
1119 | break; | |
1120 | } | |
78eb9092 TL |
1121 | case LL_IOC_HSM_CT_START: { |
1122 | struct lustre_kernelcomm *lk = karg; | |
1123 | if (lk->lk_flags & LK_FLG_STOP) | |
1124 | rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg); | |
1125 | else | |
1126 | rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg); | |
1127 | break; | |
1128 | } | |
d7e09d03 PT |
1129 | default: |
1130 | for (i = 0; i < count; i++) { | |
1131 | struct obd_device *mdc_obd; | |
1132 | int err; | |
1133 | ||
1134 | if (lmv->tgts[i] == NULL || | |
1135 | lmv->tgts[i]->ltd_exp == NULL) | |
1136 | continue; | |
1137 | /* ll_umount_begin() sets force flag but for lmv, not | |
1138 | * mdc. Let's pass it through */ | |
1139 | mdc_obd = class_exp2obd(lmv->tgts[i]->ltd_exp); | |
1140 | mdc_obd->obd_force = obddev->obd_force; | |
1141 | err = obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, | |
1142 | karg, uarg); | |
1143 | if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { | |
0a3bdb00 | 1144 | return err; |
d7e09d03 PT |
1145 | } else if (err) { |
1146 | if (lmv->tgts[i]->ltd_active) { | |
2d00bd17 JP |
1147 | CERROR("error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n", |
1148 | lmv->tgts[i]->ltd_uuid.uuid, | |
1149 | i, cmd, err); | |
d7e09d03 PT |
1150 | if (!rc) |
1151 | rc = err; | |
1152 | } | |
1153 | } else | |
1154 | set = 1; | |
1155 | } | |
1156 | if (!set && !rc) | |
1157 | rc = -EIO; | |
1158 | } | |
0a3bdb00 | 1159 | return rc; |
d7e09d03 PT |
1160 | } |
1161 | ||
1162 | #if 0 | |
1163 | static int lmv_all_chars_policy(int count, const char *name, | |
1164 | int len) | |
1165 | { | |
1166 | unsigned int c = 0; | |
1167 | ||
1168 | while (len > 0) | |
1169 | c += name[--len]; | |
1170 | c = c % count; | |
1171 | return c; | |
1172 | } | |
1173 | ||
1174 | static int lmv_nid_policy(struct lmv_obd *lmv) | |
1175 | { | |
1176 | struct obd_import *imp; | |
1177 | __u32 id; | |
1178 | ||
1179 | /* | |
1180 | * XXX: To get nid we assume that underlying obd device is mdc. | |
1181 | */ | |
1182 | imp = class_exp2cliimp(lmv->tgts[0].ltd_exp); | |
1183 | id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32); | |
1184 | return id % lmv->desc.ld_tgt_count; | |
1185 | } | |
1186 | ||
1187 | static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data, | |
fe672997 | 1188 | enum placement_policy placement) |
d7e09d03 PT |
1189 | { |
1190 | switch (placement) { | |
1191 | case PLACEMENT_CHAR_POLICY: | |
1192 | return lmv_all_chars_policy(lmv->desc.ld_tgt_count, | |
1193 | op_data->op_name, | |
1194 | op_data->op_namelen); | |
1195 | case PLACEMENT_NID_POLICY: | |
1196 | return lmv_nid_policy(lmv); | |
1197 | ||
1198 | default: | |
1199 | break; | |
1200 | } | |
1201 | ||
1202 | CERROR("Unsupported placement policy %x\n", placement); | |
1203 | return -EINVAL; | |
1204 | } | |
1205 | #endif | |
1206 | ||
1207 | /** | |
1208 | * This is _inode_ placement policy function (not name). | |
1209 | */ | |
1210 | static int lmv_placement_policy(struct obd_device *obd, | |
114acca8 | 1211 | struct md_op_data *op_data, u32 *mds) |
d7e09d03 PT |
1212 | { |
1213 | struct lmv_obd *lmv = &obd->u.lmv; | |
d7e09d03 PT |
1214 | |
1215 | LASSERT(mds != NULL); | |
1216 | ||
1217 | if (lmv->desc.ld_tgt_count == 1) { | |
1218 | *mds = 0; | |
0a3bdb00 | 1219 | return 0; |
d7e09d03 PT |
1220 | } |
1221 | ||
1222 | /** | |
1223 | * If stripe_offset is provided during setdirstripe | |
b64767de | 1224 | * (setdirstripe -i xx), xx MDS will be chosen. |
d7e09d03 PT |
1225 | */ |
1226 | if (op_data->op_cli_flags & CLI_SET_MEA) { | |
1227 | struct lmv_user_md *lum; | |
1228 | ||
1229 | lum = (struct lmv_user_md *)op_data->op_data; | |
1230 | if (lum->lum_type == LMV_STRIPE_TYPE && | |
1231 | lum->lum_stripe_offset != -1) { | |
1232 | if (lum->lum_stripe_offset >= lmv->desc.ld_tgt_count) { | |
2d00bd17 JP |
1233 | CERROR("%s: Stripe_offset %d > MDT count %d: rc = %d\n", |
1234 | obd->obd_name, | |
d7e09d03 PT |
1235 | lum->lum_stripe_offset, |
1236 | lmv->desc.ld_tgt_count, -ERANGE); | |
0a3bdb00 | 1237 | return -ERANGE; |
d7e09d03 PT |
1238 | } |
1239 | *mds = lum->lum_stripe_offset; | |
0a3bdb00 | 1240 | return 0; |
d7e09d03 PT |
1241 | } |
1242 | } | |
1243 | ||
1244 | /* Allocate new fid on target according to operation type and parent | |
1245 | * home mds. */ | |
1246 | *mds = op_data->op_mds; | |
0a3bdb00 | 1247 | return 0; |
d7e09d03 PT |
1248 | } |
1249 | ||
114acca8 | 1250 | int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds) |
d7e09d03 PT |
1251 | { |
1252 | struct lmv_tgt_desc *tgt; | |
1253 | int rc; | |
d7e09d03 PT |
1254 | |
1255 | tgt = lmv_get_target(lmv, mds); | |
1256 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1257 | return PTR_ERR(tgt); |
d7e09d03 PT |
1258 | |
1259 | /* | |
1260 | * New seq alloc and FLD setup should be atomic. Otherwise we may find | |
1261 | * on server that seq in new allocated fid is not yet known. | |
1262 | */ | |
1263 | mutex_lock(&tgt->ltd_fid_mutex); | |
1264 | ||
4d54556f JL |
1265 | if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL) { |
1266 | rc = -ENODEV; | |
1267 | goto out; | |
1268 | } | |
d7e09d03 PT |
1269 | |
1270 | /* | |
1271 | * Asking underlaying tgt layer to allocate new fid. | |
1272 | */ | |
1273 | rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL); | |
1274 | if (rc > 0) { | |
1275 | LASSERT(fid_is_sane(fid)); | |
1276 | rc = 0; | |
1277 | } | |
1278 | ||
d7e09d03 PT |
1279 | out: |
1280 | mutex_unlock(&tgt->ltd_fid_mutex); | |
1281 | return rc; | |
1282 | } | |
1283 | ||
1284 | int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid, | |
1285 | struct md_op_data *op_data) | |
1286 | { | |
1287 | struct obd_device *obd = class_exp2obd(exp); | |
1288 | struct lmv_obd *lmv = &obd->u.lmv; | |
114acca8 | 1289 | u32 mds = 0; |
d7e09d03 | 1290 | int rc; |
d7e09d03 PT |
1291 | |
1292 | LASSERT(op_data != NULL); | |
1293 | LASSERT(fid != NULL); | |
1294 | ||
1295 | rc = lmv_placement_policy(obd, op_data, &mds); | |
1296 | if (rc) { | |
2d00bd17 JP |
1297 | CERROR("Can't get target for allocating fid, rc %d\n", |
1298 | rc); | |
0a3bdb00 | 1299 | return rc; |
d7e09d03 PT |
1300 | } |
1301 | ||
1302 | rc = __lmv_fid_alloc(lmv, fid, mds); | |
1303 | if (rc) { | |
1304 | CERROR("Can't alloc new fid, rc %d\n", rc); | |
0a3bdb00 | 1305 | return rc; |
d7e09d03 PT |
1306 | } |
1307 | ||
0a3bdb00 | 1308 | return rc; |
d7e09d03 PT |
1309 | } |
1310 | ||
1311 | static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
1312 | { | |
1313 | struct lmv_obd *lmv = &obd->u.lmv; | |
1314 | struct lprocfs_static_vars lvars; | |
1315 | struct lmv_desc *desc; | |
1316 | int rc; | |
d7e09d03 PT |
1317 | |
1318 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { | |
1319 | CERROR("LMV setup requires a descriptor\n"); | |
0a3bdb00 | 1320 | return -EINVAL; |
d7e09d03 PT |
1321 | } |
1322 | ||
1323 | desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1); | |
1324 | if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { | |
1325 | CERROR("Lmv descriptor size wrong: %d > %d\n", | |
1326 | (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); | |
0a3bdb00 | 1327 | return -EINVAL; |
d7e09d03 PT |
1328 | } |
1329 | ||
8bcf30c3 | 1330 | lmv->tgts = kcalloc(32, sizeof(*lmv->tgts), GFP_NOFS); |
d7e09d03 | 1331 | if (lmv->tgts == NULL) |
0a3bdb00 | 1332 | return -ENOMEM; |
d7e09d03 PT |
1333 | lmv->tgts_size = 32; |
1334 | ||
1335 | obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid); | |
1336 | lmv->desc.ld_tgt_count = 0; | |
1337 | lmv->desc.ld_active_tgt_count = 0; | |
1338 | lmv->max_cookiesize = 0; | |
1339 | lmv->max_def_easize = 0; | |
1340 | lmv->max_easize = 0; | |
1341 | lmv->lmv_placement = PLACEMENT_CHAR_POLICY; | |
1342 | ||
1343 | spin_lock_init(&lmv->lmv_lock); | |
1344 | mutex_init(&lmv->init_mutex); | |
1345 | ||
1346 | lprocfs_lmv_init_vars(&lvars); | |
1347 | ||
1348 | lprocfs_obd_setup(obd, lvars.obd_vars); | |
f267cdb4 | 1349 | #if defined (CONFIG_PROC_FS) |
d7e09d03 PT |
1350 | { |
1351 | rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd", | |
1352 | 0444, &lmv_proc_target_fops, obd); | |
1353 | if (rc) | |
1354 | CWARN("%s: error adding LMV target_obd file: rc = %d\n", | |
1355 | obd->obd_name, rc); | |
1356 | } | |
1357 | #endif | |
1358 | rc = fld_client_init(&lmv->lmv_fld, obd->obd_name, | |
1359 | LUSTRE_CLI_FLD_HASH_DHT); | |
1360 | if (rc) { | |
1361 | CERROR("Can't init FLD, err %d\n", rc); | |
4d54556f | 1362 | goto out; |
d7e09d03 PT |
1363 | } |
1364 | ||
0a3bdb00 | 1365 | return 0; |
d7e09d03 PT |
1366 | |
1367 | out: | |
1368 | return rc; | |
1369 | } | |
1370 | ||
1371 | static int lmv_cleanup(struct obd_device *obd) | |
1372 | { | |
1373 | struct lmv_obd *lmv = &obd->u.lmv; | |
d7e09d03 PT |
1374 | |
1375 | fld_client_fini(&lmv->lmv_fld); | |
1376 | if (lmv->tgts != NULL) { | |
1377 | int i; | |
1378 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
1379 | if (lmv->tgts[i] == NULL) | |
1380 | continue; | |
1381 | lmv_del_target(lmv, i); | |
1382 | } | |
8bcf30c3 | 1383 | kfree(lmv->tgts); |
d7e09d03 PT |
1384 | lmv->tgts_size = 0; |
1385 | } | |
0a3bdb00 | 1386 | return 0; |
d7e09d03 PT |
1387 | } |
1388 | ||
21aef7d9 | 1389 | static int lmv_process_config(struct obd_device *obd, u32 len, void *buf) |
d7e09d03 PT |
1390 | { |
1391 | struct lustre_cfg *lcfg = buf; | |
1392 | struct obd_uuid obd_uuid; | |
1393 | int gen; | |
1394 | __u32 index; | |
1395 | int rc; | |
d7e09d03 PT |
1396 | |
1397 | switch (lcfg->lcfg_command) { | |
1398 | case LCFG_ADD_MDC: | |
1399 | /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID | |
1400 | * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */ | |
4d54556f JL |
1401 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) { |
1402 | rc = -EINVAL; | |
1403 | goto out; | |
1404 | } | |
d7e09d03 PT |
1405 | |
1406 | obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); | |
1407 | ||
4d54556f JL |
1408 | if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) { |
1409 | rc = -EINVAL; | |
1410 | goto out; | |
1411 | } | |
1412 | if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1) { | |
1413 | rc = -EINVAL; | |
1414 | goto out; | |
1415 | } | |
d7e09d03 | 1416 | rc = lmv_add_target(obd, &obd_uuid, index, gen); |
4d54556f | 1417 | goto out; |
d7e09d03 PT |
1418 | default: |
1419 | CERROR("Unknown command: %d\n", lcfg->lcfg_command); | |
4d54556f JL |
1420 | rc = -EINVAL; |
1421 | goto out; | |
d7e09d03 PT |
1422 | } |
1423 | out: | |
0a3bdb00 | 1424 | return rc; |
d7e09d03 PT |
1425 | } |
1426 | ||
1427 | static int lmv_statfs(const struct lu_env *env, struct obd_export *exp, | |
1428 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
1429 | { | |
1430 | struct obd_device *obd = class_exp2obd(exp); | |
1431 | struct lmv_obd *lmv = &obd->u.lmv; | |
1432 | struct obd_statfs *temp; | |
1433 | int rc = 0; | |
1434 | int i; | |
d7e09d03 PT |
1435 | |
1436 | rc = lmv_check_connect(obd); | |
1437 | if (rc) | |
0a3bdb00 | 1438 | return rc; |
d7e09d03 | 1439 | |
8bcf30c3 | 1440 | temp = kzalloc(sizeof(*temp), GFP_NOFS); |
d7e09d03 | 1441 | if (temp == NULL) |
0a3bdb00 | 1442 | return -ENOMEM; |
d7e09d03 PT |
1443 | |
1444 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
1445 | if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) | |
1446 | continue; | |
1447 | ||
1448 | rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp, | |
1449 | max_age, flags); | |
1450 | if (rc) { | |
1451 | CERROR("can't stat MDS #%d (%s), error %d\n", i, | |
1452 | lmv->tgts[i]->ltd_exp->exp_obd->obd_name, | |
1453 | rc); | |
4d54556f | 1454 | goto out_free_temp; |
d7e09d03 PT |
1455 | } |
1456 | ||
1457 | if (i == 0) { | |
1458 | *osfs = *temp; | |
1459 | /* If the statfs is from mount, it will needs | |
1460 | * retrieve necessary information from MDT0. | |
1461 | * i.e. mount does not need the merged osfs | |
1462 | * from all of MDT. | |
1463 | * And also clients can be mounted as long as | |
1464 | * MDT0 is in service*/ | |
1465 | if (flags & OBD_STATFS_FOR_MDT0) | |
4d54556f | 1466 | goto out_free_temp; |
d7e09d03 PT |
1467 | } else { |
1468 | osfs->os_bavail += temp->os_bavail; | |
1469 | osfs->os_blocks += temp->os_blocks; | |
1470 | osfs->os_ffree += temp->os_ffree; | |
1471 | osfs->os_files += temp->os_files; | |
1472 | } | |
1473 | } | |
1474 | ||
d7e09d03 | 1475 | out_free_temp: |
8bcf30c3 | 1476 | kfree(temp); |
d7e09d03 PT |
1477 | return rc; |
1478 | } | |
1479 | ||
1480 | static int lmv_getstatus(struct obd_export *exp, | |
1481 | struct lu_fid *fid, | |
1482 | struct obd_capa **pc) | |
1483 | { | |
1484 | struct obd_device *obd = exp->exp_obd; | |
1485 | struct lmv_obd *lmv = &obd->u.lmv; | |
1486 | int rc; | |
d7e09d03 PT |
1487 | |
1488 | rc = lmv_check_connect(obd); | |
1489 | if (rc) | |
0a3bdb00 | 1490 | return rc; |
d7e09d03 PT |
1491 | |
1492 | rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid, pc); | |
0a3bdb00 | 1493 | return rc; |
d7e09d03 PT |
1494 | } |
1495 | ||
1496 | static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid, | |
21aef7d9 | 1497 | struct obd_capa *oc, u64 valid, const char *name, |
d7e09d03 PT |
1498 | const char *input, int input_size, int output_size, |
1499 | int flags, struct ptlrpc_request **request) | |
1500 | { | |
1501 | struct obd_device *obd = exp->exp_obd; | |
1502 | struct lmv_obd *lmv = &obd->u.lmv; | |
1503 | struct lmv_tgt_desc *tgt; | |
1504 | int rc; | |
d7e09d03 PT |
1505 | |
1506 | rc = lmv_check_connect(obd); | |
1507 | if (rc) | |
0a3bdb00 | 1508 | return rc; |
d7e09d03 PT |
1509 | |
1510 | tgt = lmv_find_target(lmv, fid); | |
1511 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1512 | return PTR_ERR(tgt); |
d7e09d03 PT |
1513 | |
1514 | rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input, | |
1515 | input_size, output_size, flags, request); | |
1516 | ||
0a3bdb00 | 1517 | return rc; |
d7e09d03 PT |
1518 | } |
1519 | ||
1520 | static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid, | |
21aef7d9 | 1521 | struct obd_capa *oc, u64 valid, const char *name, |
d7e09d03 PT |
1522 | const char *input, int input_size, int output_size, |
1523 | int flags, __u32 suppgid, | |
1524 | struct ptlrpc_request **request) | |
1525 | { | |
1526 | struct obd_device *obd = exp->exp_obd; | |
1527 | struct lmv_obd *lmv = &obd->u.lmv; | |
1528 | struct lmv_tgt_desc *tgt; | |
1529 | int rc; | |
d7e09d03 PT |
1530 | |
1531 | rc = lmv_check_connect(obd); | |
1532 | if (rc) | |
0a3bdb00 | 1533 | return rc; |
d7e09d03 PT |
1534 | |
1535 | tgt = lmv_find_target(lmv, fid); | |
1536 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1537 | return PTR_ERR(tgt); |
d7e09d03 PT |
1538 | |
1539 | rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input, | |
1540 | input_size, output_size, flags, suppgid, | |
1541 | request); | |
1542 | ||
0a3bdb00 | 1543 | return rc; |
d7e09d03 PT |
1544 | } |
1545 | ||
1546 | static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data, | |
1547 | struct ptlrpc_request **request) | |
1548 | { | |
1549 | struct obd_device *obd = exp->exp_obd; | |
1550 | struct lmv_obd *lmv = &obd->u.lmv; | |
1551 | struct lmv_tgt_desc *tgt; | |
1552 | int rc; | |
d7e09d03 PT |
1553 | |
1554 | rc = lmv_check_connect(obd); | |
1555 | if (rc) | |
0a3bdb00 | 1556 | return rc; |
d7e09d03 PT |
1557 | |
1558 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
1559 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1560 | return PTR_ERR(tgt); |
d7e09d03 PT |
1561 | |
1562 | if (op_data->op_flags & MF_GET_MDT_IDX) { | |
1563 | op_data->op_mds = tgt->ltd_idx; | |
0a3bdb00 | 1564 | return 0; |
d7e09d03 PT |
1565 | } |
1566 | ||
1567 | rc = md_getattr(tgt->ltd_exp, op_data, request); | |
1568 | ||
0a3bdb00 | 1569 | return rc; |
d7e09d03 PT |
1570 | } |
1571 | ||
1572 | static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid) | |
1573 | { | |
1574 | struct obd_device *obd = exp->exp_obd; | |
1575 | struct lmv_obd *lmv = &obd->u.lmv; | |
1576 | int i; | |
1577 | int rc; | |
d7e09d03 PT |
1578 | |
1579 | rc = lmv_check_connect(obd); | |
1580 | if (rc) | |
0a3bdb00 | 1581 | return rc; |
d7e09d03 PT |
1582 | |
1583 | CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid)); | |
1584 | ||
1585 | /* | |
1586 | * With DNE every object can have two locks in different namespaces: | |
1587 | * lookup lock in space of MDT storing direntry and update/open lock in | |
1588 | * space of MDT storing inode. | |
1589 | */ | |
1590 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
1591 | if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) | |
1592 | continue; | |
1593 | md_null_inode(lmv->tgts[i]->ltd_exp, fid); | |
1594 | } | |
1595 | ||
0a3bdb00 | 1596 | return 0; |
d7e09d03 PT |
1597 | } |
1598 | ||
1599 | static int lmv_find_cbdata(struct obd_export *exp, const struct lu_fid *fid, | |
1600 | ldlm_iterator_t it, void *data) | |
1601 | { | |
1602 | struct obd_device *obd = exp->exp_obd; | |
1603 | struct lmv_obd *lmv = &obd->u.lmv; | |
1604 | int i; | |
1605 | int rc; | |
d7e09d03 PT |
1606 | |
1607 | rc = lmv_check_connect(obd); | |
1608 | if (rc) | |
0a3bdb00 | 1609 | return rc; |
d7e09d03 PT |
1610 | |
1611 | CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid)); | |
1612 | ||
1613 | /* | |
1614 | * With DNE every object can have two locks in different namespaces: | |
1615 | * lookup lock in space of MDT storing direntry and update/open lock in | |
1616 | * space of MDT storing inode. | |
1617 | */ | |
1618 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
1619 | if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) | |
1620 | continue; | |
1621 | rc = md_find_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data); | |
1622 | if (rc) | |
0a3bdb00 | 1623 | return rc; |
d7e09d03 PT |
1624 | } |
1625 | ||
0a3bdb00 | 1626 | return rc; |
d7e09d03 PT |
1627 | } |
1628 | ||
1629 | ||
1630 | static int lmv_close(struct obd_export *exp, struct md_op_data *op_data, | |
1631 | struct md_open_data *mod, struct ptlrpc_request **request) | |
1632 | { | |
1633 | struct obd_device *obd = exp->exp_obd; | |
1634 | struct lmv_obd *lmv = &obd->u.lmv; | |
1635 | struct lmv_tgt_desc *tgt; | |
1636 | int rc; | |
d7e09d03 PT |
1637 | |
1638 | rc = lmv_check_connect(obd); | |
1639 | if (rc) | |
0a3bdb00 | 1640 | return rc; |
d7e09d03 PT |
1641 | |
1642 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
1643 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1644 | return PTR_ERR(tgt); |
d7e09d03 PT |
1645 | |
1646 | CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1)); | |
1647 | rc = md_close(tgt->ltd_exp, op_data, mod, request); | |
0a3bdb00 | 1648 | return rc; |
d7e09d03 PT |
1649 | } |
1650 | ||
1651 | struct lmv_tgt_desc | |
1652 | *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, | |
1653 | struct lu_fid *fid) | |
1654 | { | |
1655 | struct lmv_tgt_desc *tgt; | |
1656 | ||
1657 | tgt = lmv_find_target(lmv, fid); | |
1658 | if (IS_ERR(tgt)) | |
1659 | return tgt; | |
1660 | ||
1661 | op_data->op_mds = tgt->ltd_idx; | |
1662 | ||
1663 | return tgt; | |
1664 | } | |
1665 | ||
5dc8d7b4 LC |
1666 | static int lmv_create(struct obd_export *exp, struct md_op_data *op_data, |
1667 | const void *data, int datalen, int mode, __u32 uid, | |
1668 | __u32 gid, cfs_cap_t cap_effective, __u64 rdev, | |
1669 | struct ptlrpc_request **request) | |
d7e09d03 PT |
1670 | { |
1671 | struct obd_device *obd = exp->exp_obd; | |
1672 | struct lmv_obd *lmv = &obd->u.lmv; | |
1673 | struct lmv_tgt_desc *tgt; | |
1674 | int rc; | |
d7e09d03 PT |
1675 | |
1676 | rc = lmv_check_connect(obd); | |
1677 | if (rc) | |
0a3bdb00 | 1678 | return rc; |
d7e09d03 PT |
1679 | |
1680 | if (!lmv->desc.ld_active_tgt_count) | |
0a3bdb00 | 1681 | return -EIO; |
d7e09d03 PT |
1682 | |
1683 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); | |
1684 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1685 | return PTR_ERR(tgt); |
d7e09d03 PT |
1686 | |
1687 | rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data); | |
1688 | if (rc) | |
0a3bdb00 | 1689 | return rc; |
d7e09d03 PT |
1690 | |
1691 | CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n", | |
1692 | op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1), | |
1693 | op_data->op_mds); | |
1694 | ||
1695 | op_data->op_flags |= MF_MDC_CANCEL_FID1; | |
1696 | rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid, | |
1697 | cap_effective, rdev, request); | |
1698 | ||
1699 | if (rc == 0) { | |
1700 | if (*request == NULL) | |
0a3bdb00 | 1701 | return rc; |
d7e09d03 PT |
1702 | CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2)); |
1703 | } | |
0a3bdb00 | 1704 | return rc; |
d7e09d03 PT |
1705 | } |
1706 | ||
1707 | static int lmv_done_writing(struct obd_export *exp, | |
1708 | struct md_op_data *op_data, | |
1709 | struct md_open_data *mod) | |
1710 | { | |
1711 | struct obd_device *obd = exp->exp_obd; | |
1712 | struct lmv_obd *lmv = &obd->u.lmv; | |
1713 | struct lmv_tgt_desc *tgt; | |
1714 | int rc; | |
d7e09d03 PT |
1715 | |
1716 | rc = lmv_check_connect(obd); | |
1717 | if (rc) | |
0a3bdb00 | 1718 | return rc; |
d7e09d03 PT |
1719 | |
1720 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
1721 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1722 | return PTR_ERR(tgt); |
d7e09d03 PT |
1723 | |
1724 | rc = md_done_writing(tgt->ltd_exp, op_data, mod); | |
0a3bdb00 | 1725 | return rc; |
d7e09d03 PT |
1726 | } |
1727 | ||
1728 | static int | |
1729 | lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo, | |
1730 | struct lookup_intent *it, struct md_op_data *op_data, | |
1731 | struct lustre_handle *lockh, void *lmm, int lmmsize, | |
875332d4 | 1732 | __u64 extra_lock_flags) |
d7e09d03 PT |
1733 | { |
1734 | struct ptlrpc_request *req = it->d.lustre.it_data; | |
1735 | struct obd_device *obd = exp->exp_obd; | |
1736 | struct lmv_obd *lmv = &obd->u.lmv; | |
1737 | struct lustre_handle plock; | |
1738 | struct lmv_tgt_desc *tgt; | |
1739 | struct md_op_data *rdata; | |
1740 | struct lu_fid fid1; | |
1741 | struct mdt_body *body; | |
1742 | int rc = 0; | |
1743 | int pmode; | |
d7e09d03 PT |
1744 | |
1745 | body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); | |
1746 | LASSERT(body != NULL); | |
1747 | ||
1748 | if (!(body->valid & OBD_MD_MDS)) | |
0a3bdb00 | 1749 | return 0; |
d7e09d03 PT |
1750 | |
1751 | CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n", | |
1752 | LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1)); | |
1753 | ||
1754 | /* | |
1755 | * We got LOOKUP lock, but we really need attrs. | |
1756 | */ | |
1757 | pmode = it->d.lustre.it_lock_mode; | |
1758 | LASSERT(pmode != 0); | |
1759 | memcpy(&plock, lockh, sizeof(plock)); | |
1760 | it->d.lustre.it_lock_mode = 0; | |
1761 | it->d.lustre.it_data = NULL; | |
1762 | fid1 = body->fid1; | |
1763 | ||
d7e09d03 PT |
1764 | ptlrpc_req_finished(req); |
1765 | ||
1766 | tgt = lmv_find_target(lmv, &fid1); | |
4d54556f JL |
1767 | if (IS_ERR(tgt)) { |
1768 | rc = PTR_ERR(tgt); | |
1769 | goto out; | |
1770 | } | |
d7e09d03 | 1771 | |
8bcf30c3 | 1772 | rdata = kzalloc(sizeof(*rdata), GFP_NOFS); |
4d54556f JL |
1773 | if (rdata == NULL) { |
1774 | rc = -ENOMEM; | |
1775 | goto out; | |
1776 | } | |
d7e09d03 PT |
1777 | |
1778 | rdata->op_fid1 = fid1; | |
1779 | rdata->op_bias = MDS_CROSS_REF; | |
1780 | ||
1781 | rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh, | |
1782 | lmm, lmmsize, NULL, extra_lock_flags); | |
8bcf30c3 | 1783 | kfree(rdata); |
d7e09d03 PT |
1784 | out: |
1785 | ldlm_lock_decref(&plock, pmode); | |
1786 | return rc; | |
1787 | } | |
1788 | ||
1789 | static int | |
1790 | lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo, | |
1791 | struct lookup_intent *it, struct md_op_data *op_data, | |
1792 | struct lustre_handle *lockh, void *lmm, int lmmsize, | |
1793 | struct ptlrpc_request **req, __u64 extra_lock_flags) | |
1794 | { | |
1795 | struct obd_device *obd = exp->exp_obd; | |
1796 | struct lmv_obd *lmv = &obd->u.lmv; | |
1797 | struct lmv_tgt_desc *tgt; | |
1798 | int rc; | |
d7e09d03 PT |
1799 | |
1800 | rc = lmv_check_connect(obd); | |
1801 | if (rc) | |
0a3bdb00 | 1802 | return rc; |
d7e09d03 PT |
1803 | |
1804 | CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n", | |
1805 | LL_IT2STR(it), PFID(&op_data->op_fid1)); | |
1806 | ||
1807 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); | |
1808 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1809 | return PTR_ERR(tgt); |
d7e09d03 PT |
1810 | |
1811 | CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n", | |
1812 | LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx); | |
1813 | ||
1814 | rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh, | |
1815 | lmm, lmmsize, req, extra_lock_flags); | |
1816 | ||
1817 | if (rc == 0 && it && it->it_op == IT_OPEN) { | |
1818 | rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh, | |
1819 | lmm, lmmsize, extra_lock_flags); | |
1820 | } | |
0a3bdb00 | 1821 | return rc; |
d7e09d03 PT |
1822 | } |
1823 | ||
1824 | static int | |
1d8cb70c | 1825 | lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data, |
d7e09d03 PT |
1826 | struct ptlrpc_request **request) |
1827 | { | |
1828 | struct ptlrpc_request *req = NULL; | |
1829 | struct obd_device *obd = exp->exp_obd; | |
1830 | struct lmv_obd *lmv = &obd->u.lmv; | |
1831 | struct lmv_tgt_desc *tgt; | |
1832 | struct mdt_body *body; | |
1833 | int rc; | |
d7e09d03 PT |
1834 | |
1835 | rc = lmv_check_connect(obd); | |
1836 | if (rc) | |
0a3bdb00 | 1837 | return rc; |
d7e09d03 PT |
1838 | |
1839 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); | |
1840 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1841 | return PTR_ERR(tgt); |
d7e09d03 PT |
1842 | |
1843 | CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n", | |
1844 | op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1), | |
1845 | tgt->ltd_idx); | |
1846 | ||
1847 | rc = md_getattr_name(tgt->ltd_exp, op_data, request); | |
1848 | if (rc != 0) | |
0a3bdb00 | 1849 | return rc; |
d7e09d03 PT |
1850 | |
1851 | body = req_capsule_server_get(&(*request)->rq_pill, | |
1852 | &RMF_MDT_BODY); | |
1853 | LASSERT(body != NULL); | |
1854 | ||
1855 | if (body->valid & OBD_MD_MDS) { | |
1856 | struct lu_fid rid = body->fid1; | |
1857 | CDEBUG(D_INODE, "Request attrs for "DFID"\n", | |
1858 | PFID(&rid)); | |
1859 | ||
1860 | tgt = lmv_find_target(lmv, &rid); | |
1861 | if (IS_ERR(tgt)) { | |
1862 | ptlrpc_req_finished(*request); | |
0a3bdb00 | 1863 | return PTR_ERR(tgt); |
d7e09d03 PT |
1864 | } |
1865 | ||
1866 | op_data->op_fid1 = rid; | |
1867 | op_data->op_valid |= OBD_MD_FLCROSSREF; | |
1868 | op_data->op_namelen = 0; | |
1869 | op_data->op_name = NULL; | |
1870 | rc = md_getattr_name(tgt->ltd_exp, op_data, &req); | |
1871 | ptlrpc_req_finished(*request); | |
1872 | *request = req; | |
1873 | } | |
1874 | ||
0a3bdb00 | 1875 | return rc; |
d7e09d03 PT |
1876 | } |
1877 | ||
1878 | #define md_op_data_fid(op_data, fl) \ | |
1879 | (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \ | |
1880 | fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \ | |
1881 | fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \ | |
1882 | fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \ | |
1883 | NULL) | |
1884 | ||
1885 | static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data, | |
1886 | int op_tgt, ldlm_mode_t mode, int bits, int flag) | |
1887 | { | |
1888 | struct lu_fid *fid = md_op_data_fid(op_data, flag); | |
1889 | struct obd_device *obd = exp->exp_obd; | |
1890 | struct lmv_obd *lmv = &obd->u.lmv; | |
1891 | struct lmv_tgt_desc *tgt; | |
1892 | ldlm_policy_data_t policy = {{0}}; | |
1893 | int rc = 0; | |
d7e09d03 PT |
1894 | |
1895 | if (!fid_is_sane(fid)) | |
0a3bdb00 | 1896 | return 0; |
d7e09d03 PT |
1897 | |
1898 | tgt = lmv_find_target(lmv, fid); | |
1899 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1900 | return PTR_ERR(tgt); |
d7e09d03 PT |
1901 | |
1902 | if (tgt->ltd_idx != op_tgt) { | |
1903 | CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid)); | |
1904 | policy.l_inodebits.bits = bits; | |
1905 | rc = md_cancel_unused(tgt->ltd_exp, fid, &policy, | |
1906 | mode, LCF_ASYNC, NULL); | |
1907 | } else { | |
1908 | CDEBUG(D_INODE, | |
1909 | "EARLY_CANCEL skip operation target %d on "DFID"\n", | |
1910 | op_tgt, PFID(fid)); | |
1911 | op_data->op_flags |= flag; | |
1912 | rc = 0; | |
1913 | } | |
1914 | ||
0a3bdb00 | 1915 | return rc; |
d7e09d03 PT |
1916 | } |
1917 | ||
1918 | /* | |
1919 | * llite passes fid of an target inode in op_data->op_fid1 and id of directory in | |
1920 | * op_data->op_fid2 | |
1921 | */ | |
1922 | static int lmv_link(struct obd_export *exp, struct md_op_data *op_data, | |
1923 | struct ptlrpc_request **request) | |
1924 | { | |
1925 | struct obd_device *obd = exp->exp_obd; | |
1926 | struct lmv_obd *lmv = &obd->u.lmv; | |
1927 | struct lmv_tgt_desc *tgt; | |
1928 | int rc; | |
d7e09d03 PT |
1929 | |
1930 | rc = lmv_check_connect(obd); | |
1931 | if (rc) | |
0a3bdb00 | 1932 | return rc; |
d7e09d03 PT |
1933 | |
1934 | LASSERT(op_data->op_namelen != 0); | |
1935 | ||
1936 | CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n", | |
1937 | PFID(&op_data->op_fid2), op_data->op_namelen, | |
1938 | op_data->op_name, PFID(&op_data->op_fid1)); | |
1939 | ||
4b1a25f0 PT |
1940 | op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
1941 | op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); | |
d7e09d03 PT |
1942 | op_data->op_cap = cfs_curproc_cap_pack(); |
1943 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); | |
1944 | if (IS_ERR(tgt)) | |
0a3bdb00 | 1945 | return PTR_ERR(tgt); |
d7e09d03 PT |
1946 | |
1947 | /* | |
1948 | * Cancel UPDATE lock on child (fid1). | |
1949 | */ | |
1950 | op_data->op_flags |= MF_MDC_CANCEL_FID2; | |
1951 | rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX, | |
1952 | MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1); | |
1953 | if (rc != 0) | |
0a3bdb00 | 1954 | return rc; |
d7e09d03 PT |
1955 | |
1956 | rc = md_link(tgt->ltd_exp, op_data, request); | |
1957 | ||
0a3bdb00 | 1958 | return rc; |
d7e09d03 PT |
1959 | } |
1960 | ||
1961 | static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data, | |
1962 | const char *old, int oldlen, const char *new, int newlen, | |
1963 | struct ptlrpc_request **request) | |
1964 | { | |
1965 | struct obd_device *obd = exp->exp_obd; | |
1966 | struct lmv_obd *lmv = &obd->u.lmv; | |
1967 | struct lmv_tgt_desc *src_tgt; | |
1968 | struct lmv_tgt_desc *tgt_tgt; | |
1969 | int rc; | |
d7e09d03 PT |
1970 | |
1971 | LASSERT(oldlen != 0); | |
1972 | ||
1973 | CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n", | |
1974 | oldlen, old, PFID(&op_data->op_fid1), | |
1975 | newlen, new, PFID(&op_data->op_fid2)); | |
1976 | ||
1977 | rc = lmv_check_connect(obd); | |
1978 | if (rc) | |
0a3bdb00 | 1979 | return rc; |
d7e09d03 | 1980 | |
4b1a25f0 PT |
1981 | op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
1982 | op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); | |
d7e09d03 PT |
1983 | op_data->op_cap = cfs_curproc_cap_pack(); |
1984 | src_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); | |
1985 | if (IS_ERR(src_tgt)) | |
0a3bdb00 | 1986 | return PTR_ERR(src_tgt); |
d7e09d03 PT |
1987 | |
1988 | tgt_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); | |
1989 | if (IS_ERR(tgt_tgt)) | |
0a3bdb00 | 1990 | return PTR_ERR(tgt_tgt); |
d7e09d03 PT |
1991 | /* |
1992 | * LOOKUP lock on src child (fid3) should also be cancelled for | |
1993 | * src_tgt in mdc_rename. | |
1994 | */ | |
1995 | op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3; | |
1996 | ||
1997 | /* | |
1998 | * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its | |
1999 | * own target. | |
2000 | */ | |
2001 | rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, | |
2002 | LCK_EX, MDS_INODELOCK_UPDATE, | |
2003 | MF_MDC_CANCEL_FID2); | |
2004 | ||
2005 | /* | |
2006 | * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt. | |
2007 | */ | |
2008 | if (rc == 0) { | |
2009 | rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, | |
2010 | LCK_EX, MDS_INODELOCK_LOOKUP, | |
2011 | MF_MDC_CANCEL_FID4); | |
2012 | } | |
2013 | ||
2014 | /* | |
2015 | * Cancel all the locks on tgt child (fid4). | |
2016 | */ | |
2017 | if (rc == 0) | |
2018 | rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, | |
2019 | LCK_EX, MDS_INODELOCK_FULL, | |
2020 | MF_MDC_CANCEL_FID4); | |
2021 | ||
2022 | if (rc == 0) | |
2023 | rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen, | |
2024 | new, newlen, request); | |
0a3bdb00 | 2025 | return rc; |
d7e09d03 PT |
2026 | } |
2027 | ||
2028 | static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data, | |
2029 | void *ea, int ealen, void *ea2, int ea2len, | |
2030 | struct ptlrpc_request **request, | |
2031 | struct md_open_data **mod) | |
2032 | { | |
2033 | struct obd_device *obd = exp->exp_obd; | |
2034 | struct lmv_obd *lmv = &obd->u.lmv; | |
2035 | struct lmv_tgt_desc *tgt; | |
2036 | int rc = 0; | |
d7e09d03 PT |
2037 | |
2038 | rc = lmv_check_connect(obd); | |
2039 | if (rc) | |
0a3bdb00 | 2040 | return rc; |
d7e09d03 PT |
2041 | |
2042 | CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n", | |
2043 | PFID(&op_data->op_fid1), op_data->op_attr.ia_valid); | |
2044 | ||
2045 | op_data->op_flags |= MF_MDC_CANCEL_FID1; | |
2046 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
2047 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2048 | return PTR_ERR(tgt); |
d7e09d03 PT |
2049 | |
2050 | rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2, | |
2051 | ea2len, request, mod); | |
2052 | ||
0a3bdb00 | 2053 | return rc; |
d7e09d03 PT |
2054 | } |
2055 | ||
2056 | static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid, | |
2057 | struct obd_capa *oc, struct ptlrpc_request **request) | |
2058 | { | |
2059 | struct obd_device *obd = exp->exp_obd; | |
2060 | struct lmv_obd *lmv = &obd->u.lmv; | |
2061 | struct lmv_tgt_desc *tgt; | |
2062 | int rc; | |
d7e09d03 PT |
2063 | |
2064 | rc = lmv_check_connect(obd); | |
2065 | if (rc) | |
0a3bdb00 | 2066 | return rc; |
d7e09d03 PT |
2067 | |
2068 | tgt = lmv_find_target(lmv, fid); | |
2069 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2070 | return PTR_ERR(tgt); |
d7e09d03 PT |
2071 | |
2072 | rc = md_sync(tgt->ltd_exp, fid, oc, request); | |
0a3bdb00 | 2073 | return rc; |
d7e09d03 PT |
2074 | } |
2075 | ||
2076 | /* | |
2077 | * Adjust a set of pages, each page containing an array of lu_dirpages, | |
2078 | * so that each page can be used as a single logical lu_dirpage. | |
2079 | * | |
2080 | * A lu_dirpage is laid out as follows, where s = ldp_hash_start, | |
2081 | * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a | |
2082 | * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end | |
2083 | * value is used as a cookie to request the next lu_dirpage in a | |
2084 | * directory listing that spans multiple pages (two in this example): | |
2085 | * ________ | |
2086 | * | | | |
2087 | * .|--------v------- -----. | |
2088 | * |s|e|f|p|ent|ent| ... |ent| | |
2089 | * '--|-------------- -----' Each CFS_PAGE contains a single | |
2090 | * '------. lu_dirpage. | |
2091 | * .---------v------- -----. | |
2092 | * |s|e|f|p|ent| 0 | ... | 0 | | |
2093 | * '----------------- -----' | |
2094 | * | |
2095 | * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is | |
2096 | * larger than LU_PAGE_SIZE, a single host page may contain multiple | |
2097 | * lu_dirpages. After reading the lu_dirpages from the MDS, the | |
2098 | * ldp_hash_end of the first lu_dirpage refers to the one immediately | |
2099 | * after it in the same CFS_PAGE (arrows simplified for brevity, but | |
2100 | * in general e0==s1, e1==s2, etc.): | |
2101 | * | |
2102 | * .-------------------- -----. | |
2103 | * |s0|e0|f0|p|ent|ent| ... |ent| | |
2104 | * |---v---------------- -----| | |
2105 | * |s1|e1|f1|p|ent|ent| ... |ent| | |
2106 | * |---v---------------- -----| Here, each CFS_PAGE contains | |
2107 | * ... multiple lu_dirpages. | |
2108 | * |---v---------------- -----| | |
2109 | * |s'|e'|f'|p|ent|ent| ... |ent| | |
2110 | * '---|---------------- -----' | |
2111 | * v | |
2112 | * .----------------------------. | |
2113 | * | next CFS_PAGE | | |
2114 | * | |
2115 | * This structure is transformed into a single logical lu_dirpage as follows: | |
2116 | * | |
2117 | * - Replace e0 with e' so the request for the next lu_dirpage gets the page | |
2118 | * labeled 'next CFS_PAGE'. | |
2119 | * | |
2120 | * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether | |
2121 | * a hash collision with the next page exists. | |
2122 | * | |
2123 | * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span | |
2124 | * to the first entry of the next lu_dirpage. | |
2125 | */ | |
2126 | #if PAGE_CACHE_SIZE > LU_PAGE_SIZE | |
2127 | static void lmv_adjust_dirpages(struct page **pages, int ncfspgs, int nlupgs) | |
2128 | { | |
2129 | int i; | |
2130 | ||
2131 | for (i = 0; i < ncfspgs; i++) { | |
2132 | struct lu_dirpage *dp = kmap(pages[i]); | |
2133 | struct lu_dirpage *first = dp; | |
2134 | struct lu_dirent *end_dirent = NULL; | |
2135 | struct lu_dirent *ent; | |
2136 | __u64 hash_end = dp->ldp_hash_end; | |
2137 | __u32 flags = dp->ldp_flags; | |
2138 | ||
cdb5f710 | 2139 | while (--nlupgs > 0) { |
d7e09d03 PT |
2140 | ent = lu_dirent_start(dp); |
2141 | for (end_dirent = ent; ent != NULL; | |
2142 | end_dirent = ent, ent = lu_dirent_next(ent)); | |
2143 | ||
2144 | /* Advance dp to next lu_dirpage. */ | |
2145 | dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE); | |
2146 | ||
2147 | /* Check if we've reached the end of the CFS_PAGE. */ | |
2148 | if (!((unsigned long)dp & ~CFS_PAGE_MASK)) | |
2149 | break; | |
2150 | ||
2151 | /* Save the hash and flags of this lu_dirpage. */ | |
2152 | hash_end = dp->ldp_hash_end; | |
2153 | flags = dp->ldp_flags; | |
2154 | ||
2155 | /* Check if lu_dirpage contains no entries. */ | |
2156 | if (!end_dirent) | |
2157 | break; | |
2158 | ||
2159 | /* Enlarge the end entry lde_reclen from 0 to | |
2160 | * first entry of next lu_dirpage. */ | |
2161 | LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0); | |
2162 | end_dirent->lde_reclen = | |
2163 | cpu_to_le16((char *)(dp->ldp_entries) - | |
2164 | (char *)end_dirent); | |
2165 | } | |
2166 | ||
2167 | first->ldp_hash_end = hash_end; | |
2168 | first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE); | |
2169 | first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE); | |
2170 | ||
2171 | kunmap(pages[i]); | |
2172 | } | |
cdb5f710 | 2173 | LASSERTF(nlupgs == 0, "left = %d", nlupgs); |
d7e09d03 PT |
2174 | } |
2175 | #else | |
2176 | #define lmv_adjust_dirpages(pages, ncfspgs, nlupgs) do {} while (0) | |
2177 | #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */ | |
2178 | ||
2179 | static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data, | |
2180 | struct page **pages, struct ptlrpc_request **request) | |
2181 | { | |
2182 | struct obd_device *obd = exp->exp_obd; | |
2183 | struct lmv_obd *lmv = &obd->u.lmv; | |
2184 | __u64 offset = op_data->op_offset; | |
2185 | int rc; | |
2186 | int ncfspgs; /* pages read in PAGE_CACHE_SIZE */ | |
2187 | int nlupgs; /* pages read in LU_PAGE_SIZE */ | |
2188 | struct lmv_tgt_desc *tgt; | |
d7e09d03 PT |
2189 | |
2190 | rc = lmv_check_connect(obd); | |
2191 | if (rc) | |
0a3bdb00 | 2192 | return rc; |
d7e09d03 | 2193 | |
55f5a824 | 2194 | CDEBUG(D_INODE, "READPAGE at %#llx from "DFID"\n", |
d7e09d03 PT |
2195 | offset, PFID(&op_data->op_fid1)); |
2196 | ||
2197 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
2198 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2199 | return PTR_ERR(tgt); |
d7e09d03 PT |
2200 | |
2201 | rc = md_readpage(tgt->ltd_exp, op_data, pages, request); | |
2202 | if (rc != 0) | |
0a3bdb00 | 2203 | return rc; |
d7e09d03 PT |
2204 | |
2205 | ncfspgs = ((*request)->rq_bulk->bd_nob_transferred + PAGE_CACHE_SIZE - 1) | |
2206 | >> PAGE_CACHE_SHIFT; | |
2207 | nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT; | |
2208 | LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK)); | |
2209 | LASSERT(ncfspgs > 0 && ncfspgs <= op_data->op_npages); | |
2210 | ||
2211 | CDEBUG(D_INODE, "read %d(%d)/%d pages\n", ncfspgs, nlupgs, | |
2212 | op_data->op_npages); | |
2213 | ||
2214 | lmv_adjust_dirpages(pages, ncfspgs, nlupgs); | |
2215 | ||
0a3bdb00 | 2216 | return rc; |
d7e09d03 PT |
2217 | } |
2218 | ||
2219 | static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data, | |
2220 | struct ptlrpc_request **request) | |
2221 | { | |
2222 | struct obd_device *obd = exp->exp_obd; | |
2223 | struct lmv_obd *lmv = &obd->u.lmv; | |
2224 | struct lmv_tgt_desc *tgt = NULL; | |
2225 | struct mdt_body *body; | |
2226 | int rc; | |
d7e09d03 PT |
2227 | |
2228 | rc = lmv_check_connect(obd); | |
2229 | if (rc) | |
0a3bdb00 | 2230 | return rc; |
d7e09d03 PT |
2231 | retry: |
2232 | /* Send unlink requests to the MDT where the child is located */ | |
2233 | if (likely(!fid_is_zero(&op_data->op_fid2))) | |
2234 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); | |
2235 | else | |
2236 | tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); | |
2237 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2238 | return PTR_ERR(tgt); |
d7e09d03 | 2239 | |
4b1a25f0 PT |
2240 | op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
2241 | op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); | |
d7e09d03 PT |
2242 | op_data->op_cap = cfs_curproc_cap_pack(); |
2243 | ||
2244 | /* | |
2245 | * If child's fid is given, cancel unused locks for it if it is from | |
2246 | * another export than parent. | |
2247 | * | |
2248 | * LOOKUP lock for child (fid3) should also be cancelled on parent | |
2249 | * tgt_tgt in mdc_unlink(). | |
2250 | */ | |
2251 | op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3; | |
2252 | ||
2253 | /* | |
2254 | * Cancel FULL locks on child (fid3). | |
2255 | */ | |
2256 | rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX, | |
2257 | MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3); | |
2258 | ||
2259 | if (rc != 0) | |
0a3bdb00 | 2260 | return rc; |
d7e09d03 PT |
2261 | |
2262 | CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%d\n", | |
2263 | PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx); | |
2264 | ||
2265 | rc = md_unlink(tgt->ltd_exp, op_data, request); | |
2266 | if (rc != 0 && rc != -EREMOTE) | |
0a3bdb00 | 2267 | return rc; |
d7e09d03 PT |
2268 | |
2269 | body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY); | |
2270 | if (body == NULL) | |
0a3bdb00 | 2271 | return -EPROTO; |
d7e09d03 PT |
2272 | |
2273 | /* Not cross-ref case, just get out of here. */ | |
2274 | if (likely(!(body->valid & OBD_MD_MDS))) | |
0a3bdb00 | 2275 | return 0; |
d7e09d03 PT |
2276 | |
2277 | CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n", | |
2278 | exp->exp_obd->obd_name, PFID(&body->fid1)); | |
2279 | ||
2280 | /* This is a remote object, try remote MDT, Note: it may | |
2281 | * try more than 1 time here, Considering following case | |
2282 | * /mnt/lustre is root on MDT0, remote1 is on MDT1 | |
2283 | * 1. Initially A does not know where remote1 is, it send | |
2284 | * unlink RPC to MDT0, MDT0 return -EREMOTE, it will | |
2285 | * resend unlink RPC to MDT1 (retry 1st time). | |
2286 | * | |
2287 | * 2. During the unlink RPC in flight, | |
2288 | * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2 | |
2289 | * and create new remote1, but on MDT0 | |
2290 | * | |
2291 | * 3. MDT1 get unlink RPC(from A), then do remote lock on | |
2292 | * /mnt/lustre, then lookup get fid of remote1, and find | |
2293 | * it is remote dir again, and replay -EREMOTE again. | |
2294 | * | |
2295 | * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times). | |
2296 | * | |
2297 | * In theory, it might try unlimited time here, but it should | |
2298 | * be very rare case. */ | |
2299 | op_data->op_fid2 = body->fid1; | |
2300 | ptlrpc_req_finished(*request); | |
2301 | *request = NULL; | |
2302 | ||
2303 | goto retry; | |
2304 | } | |
2305 | ||
2306 | static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
2307 | { | |
2308 | struct lmv_obd *lmv = &obd->u.lmv; | |
d7e09d03 PT |
2309 | |
2310 | switch (stage) { | |
2311 | case OBD_CLEANUP_EARLY: | |
2312 | /* XXX: here should be calling obd_precleanup() down to | |
2313 | * stack. */ | |
2314 | break; | |
2315 | case OBD_CLEANUP_EXPORTS: | |
2316 | fld_client_proc_fini(&lmv->lmv_fld); | |
2317 | lprocfs_obd_cleanup(obd); | |
2318 | break; | |
2319 | default: | |
2320 | break; | |
2321 | } | |
5ed57d6d | 2322 | return 0; |
d7e09d03 PT |
2323 | } |
2324 | ||
2325 | static int lmv_get_info(const struct lu_env *env, struct obd_export *exp, | |
2326 | __u32 keylen, void *key, __u32 *vallen, void *val, | |
2327 | struct lov_stripe_md *lsm) | |
2328 | { | |
2329 | struct obd_device *obd; | |
2330 | struct lmv_obd *lmv; | |
2331 | int rc = 0; | |
d7e09d03 PT |
2332 | |
2333 | obd = class_exp2obd(exp); | |
2334 | if (obd == NULL) { | |
55f5a824 | 2335 | CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n", |
d7e09d03 | 2336 | exp->exp_handle.h_cookie); |
0a3bdb00 | 2337 | return -EINVAL; |
d7e09d03 PT |
2338 | } |
2339 | ||
2340 | lmv = &obd->u.lmv; | |
2341 | if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) { | |
2342 | struct lmv_tgt_desc *tgt; | |
2343 | int i; | |
2344 | ||
2345 | rc = lmv_check_connect(obd); | |
2346 | if (rc) | |
0a3bdb00 | 2347 | return rc; |
d7e09d03 PT |
2348 | |
2349 | LASSERT(*vallen == sizeof(__u32)); | |
2350 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2351 | tgt = lmv->tgts[i]; | |
2352 | /* | |
2353 | * All tgts should be connected when this gets called. | |
2354 | */ | |
2355 | if (tgt == NULL || tgt->ltd_exp == NULL) | |
2356 | continue; | |
2357 | ||
2358 | if (!obd_get_info(env, tgt->ltd_exp, keylen, key, | |
2359 | vallen, val, NULL)) | |
0a3bdb00 | 2360 | return 0; |
d7e09d03 | 2361 | } |
0a3bdb00 | 2362 | return -EINVAL; |
44779340 BB |
2363 | } else if (KEY_IS(KEY_MAX_EASIZE) || |
2364 | KEY_IS(KEY_DEFAULT_EASIZE) || | |
2365 | KEY_IS(KEY_MAX_COOKIESIZE) || | |
2366 | KEY_IS(KEY_DEFAULT_COOKIESIZE) || | |
2367 | KEY_IS(KEY_CONN_DATA)) { | |
d7e09d03 PT |
2368 | rc = lmv_check_connect(obd); |
2369 | if (rc) | |
0a3bdb00 | 2370 | return rc; |
d7e09d03 PT |
2371 | |
2372 | /* | |
2373 | * Forwarding this request to first MDS, it should know LOV | |
2374 | * desc. | |
2375 | */ | |
2376 | rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key, | |
2377 | vallen, val, NULL); | |
2378 | if (!rc && KEY_IS(KEY_CONN_DATA)) | |
2379 | exp->exp_connect_data = *(struct obd_connect_data *)val; | |
0a3bdb00 | 2380 | return rc; |
d7e09d03 PT |
2381 | } else if (KEY_IS(KEY_TGT_COUNT)) { |
2382 | *((int *)val) = lmv->desc.ld_tgt_count; | |
0a3bdb00 | 2383 | return 0; |
d7e09d03 PT |
2384 | } |
2385 | ||
2386 | CDEBUG(D_IOCTL, "Invalid key\n"); | |
0a3bdb00 | 2387 | return -EINVAL; |
d7e09d03 PT |
2388 | } |
2389 | ||
5dc8d7b4 LC |
2390 | static int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp, |
2391 | u32 keylen, void *key, u32 vallen, | |
2392 | void *val, struct ptlrpc_request_set *set) | |
d7e09d03 PT |
2393 | { |
2394 | struct lmv_tgt_desc *tgt; | |
2395 | struct obd_device *obd; | |
2396 | struct lmv_obd *lmv; | |
2397 | int rc = 0; | |
d7e09d03 PT |
2398 | |
2399 | obd = class_exp2obd(exp); | |
2400 | if (obd == NULL) { | |
55f5a824 | 2401 | CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n", |
d7e09d03 | 2402 | exp->exp_handle.h_cookie); |
0a3bdb00 | 2403 | return -EINVAL; |
d7e09d03 PT |
2404 | } |
2405 | lmv = &obd->u.lmv; | |
2406 | ||
2407 | if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) { | |
2408 | int i, err = 0; | |
2409 | ||
2410 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2411 | tgt = lmv->tgts[i]; | |
2412 | ||
2413 | if (tgt == NULL || tgt->ltd_exp == NULL) | |
2414 | continue; | |
2415 | ||
2416 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2417 | keylen, key, vallen, val, set); | |
2418 | if (err && rc == 0) | |
2419 | rc = err; | |
2420 | } | |
2421 | ||
0a3bdb00 | 2422 | return rc; |
d7e09d03 PT |
2423 | } |
2424 | ||
0a3bdb00 | 2425 | return -EINVAL; |
d7e09d03 PT |
2426 | } |
2427 | ||
5dc8d7b4 LC |
2428 | static int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, |
2429 | struct lov_stripe_md *lsm) | |
d7e09d03 PT |
2430 | { |
2431 | struct obd_device *obd = class_exp2obd(exp); | |
2432 | struct lmv_obd *lmv = &obd->u.lmv; | |
2433 | struct lmv_stripe_md *meap; | |
2434 | struct lmv_stripe_md *lsmp; | |
2435 | int mea_size; | |
2436 | int i; | |
d7e09d03 PT |
2437 | |
2438 | mea_size = lmv_get_easize(lmv); | |
2439 | if (!lmmp) | |
0a3bdb00 | 2440 | return mea_size; |
d7e09d03 PT |
2441 | |
2442 | if (*lmmp && !lsm) { | |
2443 | OBD_FREE_LARGE(*lmmp, mea_size); | |
2444 | *lmmp = NULL; | |
0a3bdb00 | 2445 | return 0; |
d7e09d03 PT |
2446 | } |
2447 | ||
2448 | if (*lmmp == NULL) { | |
2449 | OBD_ALLOC_LARGE(*lmmp, mea_size); | |
2450 | if (*lmmp == NULL) | |
0a3bdb00 | 2451 | return -ENOMEM; |
d7e09d03 PT |
2452 | } |
2453 | ||
2454 | if (!lsm) | |
0a3bdb00 | 2455 | return mea_size; |
d7e09d03 PT |
2456 | |
2457 | lsmp = (struct lmv_stripe_md *)lsm; | |
2458 | meap = (struct lmv_stripe_md *)*lmmp; | |
2459 | ||
2460 | if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR && | |
2461 | lsmp->mea_magic != MEA_MAGIC_ALL_CHARS) | |
0a3bdb00 | 2462 | return -EINVAL; |
d7e09d03 PT |
2463 | |
2464 | meap->mea_magic = cpu_to_le32(lsmp->mea_magic); | |
2465 | meap->mea_count = cpu_to_le32(lsmp->mea_count); | |
2466 | meap->mea_master = cpu_to_le32(lsmp->mea_master); | |
2467 | ||
2468 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2469 | meap->mea_ids[i] = lsmp->mea_ids[i]; | |
2470 | fid_cpu_to_le(&meap->mea_ids[i], &lsmp->mea_ids[i]); | |
2471 | } | |
2472 | ||
0a3bdb00 | 2473 | return mea_size; |
d7e09d03 PT |
2474 | } |
2475 | ||
5dc8d7b4 LC |
2476 | static int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, |
2477 | struct lov_mds_md *lmm, int lmm_size) | |
d7e09d03 PT |
2478 | { |
2479 | struct obd_device *obd = class_exp2obd(exp); | |
2480 | struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp; | |
2481 | struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm; | |
2482 | struct lmv_obd *lmv = &obd->u.lmv; | |
2483 | int mea_size; | |
2484 | int i; | |
2485 | __u32 magic; | |
d7e09d03 PT |
2486 | |
2487 | mea_size = lmv_get_easize(lmv); | |
2488 | if (lsmp == NULL) | |
2489 | return mea_size; | |
2490 | ||
2491 | if (*lsmp != NULL && lmm == NULL) { | |
2492 | OBD_FREE_LARGE(*tmea, mea_size); | |
2493 | *lsmp = NULL; | |
0a3bdb00 | 2494 | return 0; |
d7e09d03 PT |
2495 | } |
2496 | ||
2497 | LASSERT(mea_size == lmm_size); | |
2498 | ||
2499 | OBD_ALLOC_LARGE(*tmea, mea_size); | |
2500 | if (*tmea == NULL) | |
0a3bdb00 | 2501 | return -ENOMEM; |
d7e09d03 PT |
2502 | |
2503 | if (!lmm) | |
0a3bdb00 | 2504 | return mea_size; |
d7e09d03 PT |
2505 | |
2506 | if (mea->mea_magic == MEA_MAGIC_LAST_CHAR || | |
2507 | mea->mea_magic == MEA_MAGIC_ALL_CHARS || | |
9d0b2b7a | 2508 | mea->mea_magic == MEA_MAGIC_HASH_SEGMENT) { |
d7e09d03 PT |
2509 | magic = le32_to_cpu(mea->mea_magic); |
2510 | } else { | |
2511 | /* | |
2512 | * Old mea is not handled here. | |
2513 | */ | |
2514 | CERROR("Old not supportable EA is found\n"); | |
2515 | LBUG(); | |
2516 | } | |
2517 | ||
2518 | (*tmea)->mea_magic = magic; | |
2519 | (*tmea)->mea_count = le32_to_cpu(mea->mea_count); | |
2520 | (*tmea)->mea_master = le32_to_cpu(mea->mea_master); | |
2521 | ||
2522 | for (i = 0; i < (*tmea)->mea_count; i++) { | |
2523 | (*tmea)->mea_ids[i] = mea->mea_ids[i]; | |
2524 | fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]); | |
2525 | } | |
0a3bdb00 | 2526 | return mea_size; |
d7e09d03 PT |
2527 | } |
2528 | ||
2529 | static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid, | |
2530 | ldlm_policy_data_t *policy, ldlm_mode_t mode, | |
2531 | ldlm_cancel_flags_t flags, void *opaque) | |
2532 | { | |
2533 | struct obd_device *obd = exp->exp_obd; | |
2534 | struct lmv_obd *lmv = &obd->u.lmv; | |
2535 | int rc = 0; | |
2536 | int err; | |
2537 | int i; | |
d7e09d03 PT |
2538 | |
2539 | LASSERT(fid != NULL); | |
2540 | ||
2541 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2542 | if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL || | |
2543 | lmv->tgts[i]->ltd_active == 0) | |
2544 | continue; | |
2545 | ||
2546 | err = md_cancel_unused(lmv->tgts[i]->ltd_exp, fid, | |
2547 | policy, mode, flags, opaque); | |
2548 | if (!rc) | |
2549 | rc = err; | |
2550 | } | |
0a3bdb00 | 2551 | return rc; |
d7e09d03 PT |
2552 | } |
2553 | ||
5dc8d7b4 LC |
2554 | static int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data, |
2555 | __u64 *bits) | |
d7e09d03 PT |
2556 | { |
2557 | struct lmv_obd *lmv = &exp->exp_obd->u.lmv; | |
2558 | int rc; | |
d7e09d03 PT |
2559 | |
2560 | rc = md_set_lock_data(lmv->tgts[0]->ltd_exp, lockh, data, bits); | |
0a3bdb00 | 2561 | return rc; |
d7e09d03 PT |
2562 | } |
2563 | ||
5dc8d7b4 LC |
2564 | static ldlm_mode_t lmv_lock_match(struct obd_export *exp, __u64 flags, |
2565 | const struct lu_fid *fid, ldlm_type_t type, | |
2566 | ldlm_policy_data_t *policy, ldlm_mode_t mode, | |
2567 | struct lustre_handle *lockh) | |
d7e09d03 PT |
2568 | { |
2569 | struct obd_device *obd = exp->exp_obd; | |
2570 | struct lmv_obd *lmv = &obd->u.lmv; | |
2571 | ldlm_mode_t rc; | |
2572 | int i; | |
d7e09d03 PT |
2573 | |
2574 | CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid)); | |
2575 | ||
2576 | /* | |
2577 | * With CMD every object can have two locks in different namespaces: | |
2578 | * lookup lock in space of mds storing direntry and update/open lock in | |
2579 | * space of mds storing inode. Thus we check all targets, not only that | |
2580 | * one fid was created in. | |
2581 | */ | |
2582 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2583 | if (lmv->tgts[i] == NULL || | |
2584 | lmv->tgts[i]->ltd_exp == NULL || | |
2585 | lmv->tgts[i]->ltd_active == 0) | |
2586 | continue; | |
2587 | ||
2588 | rc = md_lock_match(lmv->tgts[i]->ltd_exp, flags, fid, | |
2589 | type, policy, mode, lockh); | |
2590 | if (rc) | |
0a3bdb00 | 2591 | return rc; |
d7e09d03 PT |
2592 | } |
2593 | ||
0a3bdb00 | 2594 | return 0; |
d7e09d03 PT |
2595 | } |
2596 | ||
5dc8d7b4 LC |
2597 | static int lmv_get_lustre_md(struct obd_export *exp, |
2598 | struct ptlrpc_request *req, | |
2599 | struct obd_export *dt_exp, | |
2600 | struct obd_export *md_exp, | |
2601 | struct lustre_md *md) | |
d7e09d03 PT |
2602 | { |
2603 | struct lmv_obd *lmv = &exp->exp_obd->u.lmv; | |
2604 | ||
2605 | return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md); | |
2606 | } | |
2607 | ||
5dc8d7b4 | 2608 | static int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md) |
d7e09d03 PT |
2609 | { |
2610 | struct obd_device *obd = exp->exp_obd; | |
2611 | struct lmv_obd *lmv = &obd->u.lmv; | |
d7e09d03 PT |
2612 | |
2613 | if (md->mea) | |
2614 | obd_free_memmd(exp, (void *)&md->mea); | |
0a3bdb00 | 2615 | return md_free_lustre_md(lmv->tgts[0]->ltd_exp, md); |
d7e09d03 PT |
2616 | } |
2617 | ||
5dc8d7b4 LC |
2618 | static int lmv_set_open_replay_data(struct obd_export *exp, |
2619 | struct obd_client_handle *och, | |
2620 | struct lookup_intent *it) | |
d7e09d03 PT |
2621 | { |
2622 | struct obd_device *obd = exp->exp_obd; | |
2623 | struct lmv_obd *lmv = &obd->u.lmv; | |
2624 | struct lmv_tgt_desc *tgt; | |
d7e09d03 PT |
2625 | |
2626 | tgt = lmv_find_target(lmv, &och->och_fid); | |
2627 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2628 | return PTR_ERR(tgt); |
d7e09d03 | 2629 | |
63d42578 | 2630 | return md_set_open_replay_data(tgt->ltd_exp, och, it); |
d7e09d03 PT |
2631 | } |
2632 | ||
5dc8d7b4 LC |
2633 | static int lmv_clear_open_replay_data(struct obd_export *exp, |
2634 | struct obd_client_handle *och) | |
d7e09d03 PT |
2635 | { |
2636 | struct obd_device *obd = exp->exp_obd; | |
2637 | struct lmv_obd *lmv = &obd->u.lmv; | |
2638 | struct lmv_tgt_desc *tgt; | |
d7e09d03 PT |
2639 | |
2640 | tgt = lmv_find_target(lmv, &och->och_fid); | |
2641 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2642 | return PTR_ERR(tgt); |
d7e09d03 | 2643 | |
0a3bdb00 | 2644 | return md_clear_open_replay_data(tgt->ltd_exp, och); |
d7e09d03 PT |
2645 | } |
2646 | ||
2647 | static int lmv_get_remote_perm(struct obd_export *exp, | |
2648 | const struct lu_fid *fid, | |
2649 | struct obd_capa *oc, __u32 suppgid, | |
2650 | struct ptlrpc_request **request) | |
2651 | { | |
2652 | struct obd_device *obd = exp->exp_obd; | |
2653 | struct lmv_obd *lmv = &obd->u.lmv; | |
2654 | struct lmv_tgt_desc *tgt; | |
2655 | int rc; | |
d7e09d03 PT |
2656 | |
2657 | rc = lmv_check_connect(obd); | |
2658 | if (rc) | |
0a3bdb00 | 2659 | return rc; |
d7e09d03 PT |
2660 | |
2661 | tgt = lmv_find_target(lmv, fid); | |
2662 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2663 | return PTR_ERR(tgt); |
d7e09d03 PT |
2664 | |
2665 | rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request); | |
0a3bdb00 | 2666 | return rc; |
d7e09d03 PT |
2667 | } |
2668 | ||
2669 | static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc, | |
2670 | renew_capa_cb_t cb) | |
2671 | { | |
2672 | struct obd_device *obd = exp->exp_obd; | |
2673 | struct lmv_obd *lmv = &obd->u.lmv; | |
2674 | struct lmv_tgt_desc *tgt; | |
2675 | int rc; | |
d7e09d03 PT |
2676 | |
2677 | rc = lmv_check_connect(obd); | |
2678 | if (rc) | |
0a3bdb00 | 2679 | return rc; |
d7e09d03 PT |
2680 | |
2681 | tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid); | |
2682 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2683 | return PTR_ERR(tgt); |
d7e09d03 PT |
2684 | |
2685 | rc = md_renew_capa(tgt->ltd_exp, oc, cb); | |
0a3bdb00 | 2686 | return rc; |
d7e09d03 PT |
2687 | } |
2688 | ||
5dc8d7b4 LC |
2689 | static int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req, |
2690 | const struct req_msg_field *field, | |
2691 | struct obd_capa **oc) | |
d7e09d03 PT |
2692 | { |
2693 | struct lmv_obd *lmv = &exp->exp_obd->u.lmv; | |
2694 | ||
2695 | return md_unpack_capa(lmv->tgts[0]->ltd_exp, req, field, oc); | |
2696 | } | |
2697 | ||
5dc8d7b4 LC |
2698 | static int lmv_intent_getattr_async(struct obd_export *exp, |
2699 | struct md_enqueue_info *minfo, | |
2700 | struct ldlm_enqueue_info *einfo) | |
d7e09d03 PT |
2701 | { |
2702 | struct md_op_data *op_data = &minfo->mi_data; | |
2703 | struct obd_device *obd = exp->exp_obd; | |
2704 | struct lmv_obd *lmv = &obd->u.lmv; | |
2705 | struct lmv_tgt_desc *tgt = NULL; | |
2706 | int rc; | |
d7e09d03 PT |
2707 | |
2708 | rc = lmv_check_connect(obd); | |
2709 | if (rc) | |
0a3bdb00 | 2710 | return rc; |
d7e09d03 PT |
2711 | |
2712 | tgt = lmv_find_target(lmv, &op_data->op_fid1); | |
2713 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2714 | return PTR_ERR(tgt); |
d7e09d03 PT |
2715 | |
2716 | rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo); | |
0a3bdb00 | 2717 | return rc; |
d7e09d03 PT |
2718 | } |
2719 | ||
5dc8d7b4 LC |
2720 | static int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it, |
2721 | struct lu_fid *fid, __u64 *bits) | |
d7e09d03 PT |
2722 | { |
2723 | struct obd_device *obd = exp->exp_obd; | |
2724 | struct lmv_obd *lmv = &obd->u.lmv; | |
2725 | struct lmv_tgt_desc *tgt; | |
2726 | int rc; | |
d7e09d03 PT |
2727 | |
2728 | rc = lmv_check_connect(obd); | |
2729 | if (rc) | |
0a3bdb00 | 2730 | return rc; |
d7e09d03 PT |
2731 | |
2732 | tgt = lmv_find_target(lmv, fid); | |
2733 | if (IS_ERR(tgt)) | |
0a3bdb00 | 2734 | return PTR_ERR(tgt); |
d7e09d03 PT |
2735 | |
2736 | rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits); | |
0a3bdb00 | 2737 | return rc; |
d7e09d03 PT |
2738 | } |
2739 | ||
2740 | /** | |
2741 | * For lmv, only need to send request to master MDT, and the master MDT will | |
2742 | * process with other slave MDTs. The only exception is Q_GETOQUOTA for which | |
2743 | * we directly fetch data from the slave MDTs. | |
2744 | */ | |
5dc8d7b4 LC |
2745 | static int lmv_quotactl(struct obd_device *unused, struct obd_export *exp, |
2746 | struct obd_quotactl *oqctl) | |
d7e09d03 PT |
2747 | { |
2748 | struct obd_device *obd = class_exp2obd(exp); | |
2749 | struct lmv_obd *lmv = &obd->u.lmv; | |
2750 | struct lmv_tgt_desc *tgt = lmv->tgts[0]; | |
2751 | int rc = 0, i; | |
2752 | __u64 curspace, curinodes; | |
d7e09d03 PT |
2753 | |
2754 | if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) { | |
2755 | CERROR("master lmv inactive\n"); | |
0a3bdb00 | 2756 | return -EIO; |
d7e09d03 PT |
2757 | } |
2758 | ||
2759 | if (oqctl->qc_cmd != Q_GETOQUOTA) { | |
2760 | rc = obd_quotactl(tgt->ltd_exp, oqctl); | |
0a3bdb00 | 2761 | return rc; |
d7e09d03 PT |
2762 | } |
2763 | ||
2764 | curspace = curinodes = 0; | |
2765 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2766 | int err; | |
2767 | tgt = lmv->tgts[i]; | |
2768 | ||
2769 | if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0) | |
2770 | continue; | |
2771 | if (!tgt->ltd_active) { | |
2772 | CDEBUG(D_HA, "mdt %d is inactive.\n", i); | |
2773 | continue; | |
2774 | } | |
2775 | ||
2776 | err = obd_quotactl(tgt->ltd_exp, oqctl); | |
2777 | if (err) { | |
2778 | CERROR("getquota on mdt %d failed. %d\n", i, err); | |
2779 | if (!rc) | |
2780 | rc = err; | |
2781 | } else { | |
2782 | curspace += oqctl->qc_dqblk.dqb_curspace; | |
2783 | curinodes += oqctl->qc_dqblk.dqb_curinodes; | |
2784 | } | |
2785 | } | |
2786 | oqctl->qc_dqblk.dqb_curspace = curspace; | |
2787 | oqctl->qc_dqblk.dqb_curinodes = curinodes; | |
2788 | ||
0a3bdb00 | 2789 | return rc; |
d7e09d03 PT |
2790 | } |
2791 | ||
5dc8d7b4 LC |
2792 | static int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp, |
2793 | struct obd_quotactl *oqctl) | |
d7e09d03 PT |
2794 | { |
2795 | struct obd_device *obd = class_exp2obd(exp); | |
2796 | struct lmv_obd *lmv = &obd->u.lmv; | |
2797 | struct lmv_tgt_desc *tgt; | |
2798 | int i, rc = 0; | |
d7e09d03 PT |
2799 | |
2800 | for (i = 0; i < lmv->desc.ld_tgt_count; i++) { | |
2801 | int err; | |
2802 | tgt = lmv->tgts[i]; | |
2803 | if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) { | |
2804 | CERROR("lmv idx %d inactive\n", i); | |
0a3bdb00 | 2805 | return -EIO; |
d7e09d03 PT |
2806 | } |
2807 | ||
2808 | err = obd_quotacheck(tgt->ltd_exp, oqctl); | |
2809 | if (err && !rc) | |
2810 | rc = err; | |
2811 | } | |
2812 | ||
0a3bdb00 | 2813 | return rc; |
d7e09d03 PT |
2814 | } |
2815 | ||
5dc8d7b4 | 2816 | static struct obd_ops lmv_obd_ops = { |
d7e09d03 PT |
2817 | .o_owner = THIS_MODULE, |
2818 | .o_setup = lmv_setup, | |
2819 | .o_cleanup = lmv_cleanup, | |
2820 | .o_precleanup = lmv_precleanup, | |
2821 | .o_process_config = lmv_process_config, | |
2822 | .o_connect = lmv_connect, | |
2823 | .o_disconnect = lmv_disconnect, | |
2824 | .o_statfs = lmv_statfs, | |
2825 | .o_get_info = lmv_get_info, | |
2826 | .o_set_info_async = lmv_set_info_async, | |
2827 | .o_packmd = lmv_packmd, | |
2828 | .o_unpackmd = lmv_unpackmd, | |
2829 | .o_notify = lmv_notify, | |
2830 | .o_get_uuid = lmv_get_uuid, | |
2831 | .o_iocontrol = lmv_iocontrol, | |
2832 | .o_quotacheck = lmv_quotacheck, | |
2833 | .o_quotactl = lmv_quotactl | |
2834 | }; | |
2835 | ||
5dc8d7b4 | 2836 | static struct md_ops lmv_md_ops = { |
d7e09d03 PT |
2837 | .m_getstatus = lmv_getstatus, |
2838 | .m_null_inode = lmv_null_inode, | |
2839 | .m_find_cbdata = lmv_find_cbdata, | |
2840 | .m_close = lmv_close, | |
2841 | .m_create = lmv_create, | |
2842 | .m_done_writing = lmv_done_writing, | |
2843 | .m_enqueue = lmv_enqueue, | |
2844 | .m_getattr = lmv_getattr, | |
2845 | .m_getxattr = lmv_getxattr, | |
2846 | .m_getattr_name = lmv_getattr_name, | |
2847 | .m_intent_lock = lmv_intent_lock, | |
2848 | .m_link = lmv_link, | |
2849 | .m_rename = lmv_rename, | |
2850 | .m_setattr = lmv_setattr, | |
2851 | .m_setxattr = lmv_setxattr, | |
2852 | .m_sync = lmv_sync, | |
2853 | .m_readpage = lmv_readpage, | |
2854 | .m_unlink = lmv_unlink, | |
2855 | .m_init_ea_size = lmv_init_ea_size, | |
2856 | .m_cancel_unused = lmv_cancel_unused, | |
2857 | .m_set_lock_data = lmv_set_lock_data, | |
2858 | .m_lock_match = lmv_lock_match, | |
2859 | .m_get_lustre_md = lmv_get_lustre_md, | |
2860 | .m_free_lustre_md = lmv_free_lustre_md, | |
2861 | .m_set_open_replay_data = lmv_set_open_replay_data, | |
2862 | .m_clear_open_replay_data = lmv_clear_open_replay_data, | |
2863 | .m_renew_capa = lmv_renew_capa, | |
2864 | .m_unpack_capa = lmv_unpack_capa, | |
2865 | .m_get_remote_perm = lmv_get_remote_perm, | |
2866 | .m_intent_getattr_async = lmv_intent_getattr_async, | |
2867 | .m_revalidate_lock = lmv_revalidate_lock | |
2868 | }; | |
2869 | ||
5dc8d7b4 | 2870 | static int __init lmv_init(void) |
d7e09d03 PT |
2871 | { |
2872 | struct lprocfs_static_vars lvars; | |
2873 | int rc; | |
2874 | ||
2875 | lprocfs_lmv_init_vars(&lvars); | |
2876 | ||
2877 | rc = class_register_type(&lmv_obd_ops, &lmv_md_ops, | |
2878 | lvars.module_vars, LUSTRE_LMV_NAME, NULL); | |
2879 | return rc; | |
2880 | } | |
2881 | ||
2882 | static void lmv_exit(void) | |
2883 | { | |
2884 | class_unregister_type(LUSTRE_LMV_NAME); | |
2885 | } | |
2886 | ||
2887 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
2888 | MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver"); | |
2889 | MODULE_LICENSE("GPL"); | |
2890 | ||
2891 | module_init(lmv_init); | |
2892 | module_exit(lmv_exit); |