Commit | Line | Data |
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3d14c5d2 | 1 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 2 | |
3d14c5d2 | 3 | #include <linux/module.h> |
f24e9980 SW |
4 | #include <linux/err.h> |
5 | #include <linux/highmem.h> | |
6 | #include <linux/mm.h> | |
7 | #include <linux/pagemap.h> | |
8 | #include <linux/slab.h> | |
9 | #include <linux/uaccess.h> | |
68b4476b YS |
10 | #ifdef CONFIG_BLOCK |
11 | #include <linux/bio.h> | |
12 | #endif | |
f24e9980 | 13 | |
3d14c5d2 YS |
14 | #include <linux/ceph/libceph.h> |
15 | #include <linux/ceph/osd_client.h> | |
16 | #include <linux/ceph/messenger.h> | |
17 | #include <linux/ceph/decode.h> | |
18 | #include <linux/ceph/auth.h> | |
19 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 20 | |
c16e7869 SW |
21 | #define OSD_OP_FRONT_LEN 4096 |
22 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 23 | |
9e32789f | 24 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 25 | |
f9d25199 | 26 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 27 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
28 | static void __register_request(struct ceph_osd_client *osdc, |
29 | struct ceph_osd_request *req); | |
30 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
31 | struct ceph_osd_request *req); | |
56e925b6 SW |
32 | static void __send_request(struct ceph_osd_client *osdc, |
33 | struct ceph_osd_request *req); | |
f24e9980 | 34 | |
68b4476b YS |
35 | static int op_has_extent(int op) |
36 | { | |
37 | return (op == CEPH_OSD_OP_READ || | |
38 | op == CEPH_OSD_OP_WRITE); | |
39 | } | |
40 | ||
f24e9980 SW |
41 | /* |
42 | * Implement client access to distributed object storage cluster. | |
43 | * | |
44 | * All data objects are stored within a cluster/cloud of OSDs, or | |
45 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
46 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
47 | * remote daemons serving up and coordinating consistent and safe | |
48 | * access to storage. | |
49 | * | |
50 | * Cluster membership and the mapping of data objects onto storage devices | |
51 | * are described by the osd map. | |
52 | * | |
53 | * We keep track of pending OSD requests (read, write), resubmit | |
54 | * requests to different OSDs when the cluster topology/data layout | |
55 | * change, or retry the affected requests when the communications | |
56 | * channel with an OSD is reset. | |
57 | */ | |
58 | ||
59 | /* | |
60 | * calculate the mapping of a file extent onto an object, and fill out the | |
61 | * request accordingly. shorten extent as necessary if it crosses an | |
62 | * object boundary. | |
63 | * | |
64 | * fill osd op in request message. | |
65 | */ | |
dbe0fc41 | 66 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
47a05811 | 67 | struct ceph_osd_req_op *op, u64 *bno) |
f24e9980 | 68 | { |
60e56f13 | 69 | u64 orig_len = *plen; |
60e56f13 AE |
70 | u64 objoff = 0; |
71 | u64 objlen = 0; | |
d63b77f4 | 72 | int r; |
f24e9980 | 73 | |
60e56f13 | 74 | /* object extent? */ |
47a05811 | 75 | r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, |
60e56f13 | 76 | &objoff, &objlen); |
d63b77f4 SW |
77 | if (r < 0) |
78 | return r; | |
60e56f13 AE |
79 | if (objlen < orig_len) { |
80 | *plen = objlen; | |
81 | dout(" skipping last %llu, final file extent %llu~%llu\n", | |
82 | orig_len - *plen, off, *plen); | |
83 | } | |
84 | ||
85 | if (op_has_extent(op->op)) { | |
86 | u32 osize = le32_to_cpu(layout->fl_object_size); | |
87 | op->extent.offset = objoff; | |
88 | op->extent.length = objlen; | |
89 | if (op->extent.truncate_size <= off - objoff) { | |
90 | op->extent.truncate_size = 0; | |
91 | } else { | |
92 | op->extent.truncate_size -= off - objoff; | |
93 | if (op->extent.truncate_size > osize) | |
94 | op->extent.truncate_size = osize; | |
95 | } | |
96 | } | |
60e56f13 AE |
97 | if (op->op == CEPH_OSD_OP_WRITE) |
98 | op->payload_len = *plen; | |
99 | ||
60cf5992 | 100 | dout("calc_layout bno=%llx %llu~%llu\n", *bno, objoff, objlen); |
f24e9980 | 101 | |
3ff5f385 | 102 | return 0; |
f24e9980 SW |
103 | } |
104 | ||
f24e9980 SW |
105 | /* |
106 | * requests | |
107 | */ | |
415e49a9 | 108 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 109 | { |
415e49a9 SW |
110 | struct ceph_osd_request *req = container_of(kref, |
111 | struct ceph_osd_request, | |
112 | r_kref); | |
113 | ||
114 | if (req->r_request) | |
115 | ceph_msg_put(req->r_request); | |
0d59ab81 | 116 | if (req->r_con_filling_msg) { |
9cbb1d72 AE |
117 | dout("%s revoking msg %p from con %p\n", __func__, |
118 | req->r_reply, req->r_con_filling_msg); | |
8921d114 | 119 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 120 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
9cbb1d72 | 121 | req->r_con_filling_msg = NULL; |
350b1c32 | 122 | } |
ab8cb34a AE |
123 | if (req->r_reply) |
124 | ceph_msg_put(req->r_reply); | |
415e49a9 SW |
125 | if (req->r_own_pages) |
126 | ceph_release_page_vector(req->r_pages, | |
127 | req->r_num_pages); | |
128 | ceph_put_snap_context(req->r_snapc); | |
c885837f | 129 | ceph_pagelist_release(&req->r_trail); |
415e49a9 SW |
130 | if (req->r_mempool) |
131 | mempool_free(req, req->r_osdc->req_mempool); | |
132 | else | |
133 | kfree(req); | |
f24e9980 | 134 | } |
3d14c5d2 | 135 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 136 | |
3499e8a5 | 137 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 138 | struct ceph_snap_context *snapc, |
1b83bef2 | 139 | unsigned int num_ops, |
3499e8a5 | 140 | bool use_mempool, |
54a54007 | 141 | gfp_t gfp_flags) |
f24e9980 SW |
142 | { |
143 | struct ceph_osd_request *req; | |
144 | struct ceph_msg *msg; | |
1b83bef2 SW |
145 | size_t msg_size; |
146 | ||
147 | msg_size = 4 + 4 + 8 + 8 + 4+8; | |
148 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
149 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
150 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
151 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
152 | msg_size += 8; /* snapid */ | |
153 | msg_size += 8; /* snap_seq */ | |
154 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
155 | msg_size += 4; | |
f24e9980 SW |
156 | |
157 | if (use_mempool) { | |
3499e8a5 | 158 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
159 | memset(req, 0, sizeof(*req)); |
160 | } else { | |
3499e8a5 | 161 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
162 | } |
163 | if (req == NULL) | |
a79832f2 | 164 | return NULL; |
f24e9980 | 165 | |
f24e9980 SW |
166 | req->r_osdc = osdc; |
167 | req->r_mempool = use_mempool; | |
68b4476b | 168 | |
415e49a9 | 169 | kref_init(&req->r_kref); |
f24e9980 SW |
170 | init_completion(&req->r_completion); |
171 | init_completion(&req->r_safe_completion); | |
a978fa20 | 172 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 173 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
174 | INIT_LIST_HEAD(&req->r_linger_item); |
175 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 176 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
177 | INIT_LIST_HEAD(&req->r_osd_item); |
178 | ||
c16e7869 SW |
179 | /* create reply message */ |
180 | if (use_mempool) | |
181 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
182 | else | |
183 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 184 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 185 | if (!msg) { |
c16e7869 | 186 | ceph_osdc_put_request(req); |
a79832f2 | 187 | return NULL; |
c16e7869 SW |
188 | } |
189 | req->r_reply = msg; | |
190 | ||
c885837f | 191 | ceph_pagelist_init(&req->r_trail); |
d50b409f | 192 | |
c16e7869 | 193 | /* create request message; allow space for oid */ |
f24e9980 | 194 | if (use_mempool) |
8f3bc053 | 195 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 196 | else |
b61c2763 | 197 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 198 | if (!msg) { |
f24e9980 | 199 | ceph_osdc_put_request(req); |
a79832f2 | 200 | return NULL; |
f24e9980 | 201 | } |
68b4476b | 202 | |
f24e9980 | 203 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
204 | |
205 | req->r_request = msg; | |
3499e8a5 YS |
206 | |
207 | return req; | |
208 | } | |
3d14c5d2 | 209 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 210 | |
68b4476b YS |
211 | static void osd_req_encode_op(struct ceph_osd_request *req, |
212 | struct ceph_osd_op *dst, | |
213 | struct ceph_osd_req_op *src) | |
214 | { | |
215 | dst->op = cpu_to_le16(src->op); | |
216 | ||
065a68f9 | 217 | switch (src->op) { |
fbfab539 AE |
218 | case CEPH_OSD_OP_STAT: |
219 | break; | |
68b4476b YS |
220 | case CEPH_OSD_OP_READ: |
221 | case CEPH_OSD_OP_WRITE: | |
222 | dst->extent.offset = | |
223 | cpu_to_le64(src->extent.offset); | |
224 | dst->extent.length = | |
225 | cpu_to_le64(src->extent.length); | |
226 | dst->extent.truncate_size = | |
227 | cpu_to_le64(src->extent.truncate_size); | |
228 | dst->extent.truncate_seq = | |
229 | cpu_to_le32(src->extent.truncate_seq); | |
230 | break; | |
ae1533b6 | 231 | case CEPH_OSD_OP_CALL: |
ae1533b6 YS |
232 | dst->cls.class_len = src->cls.class_len; |
233 | dst->cls.method_len = src->cls.method_len; | |
234 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); | |
235 | ||
c885837f | 236 | ceph_pagelist_append(&req->r_trail, src->cls.class_name, |
ae1533b6 | 237 | src->cls.class_len); |
c885837f | 238 | ceph_pagelist_append(&req->r_trail, src->cls.method_name, |
ae1533b6 | 239 | src->cls.method_len); |
c885837f | 240 | ceph_pagelist_append(&req->r_trail, src->cls.indata, |
ae1533b6 YS |
241 | src->cls.indata_len); |
242 | break; | |
68b4476b YS |
243 | case CEPH_OSD_OP_STARTSYNC: |
244 | break; | |
a40c4f10 YS |
245 | case CEPH_OSD_OP_NOTIFY_ACK: |
246 | case CEPH_OSD_OP_WATCH: | |
247 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
248 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
249 | dst->watch.flag = src->watch.flag; | |
250 | break; | |
68b4476b | 251 | default: |
8f63ca2d | 252 | pr_err("unrecognized osd opcode %d\n", src->op); |
68b4476b YS |
253 | WARN_ON(1); |
254 | break; | |
4c46459c AE |
255 | case CEPH_OSD_OP_MAPEXT: |
256 | case CEPH_OSD_OP_MASKTRUNC: | |
257 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 258 | case CEPH_OSD_OP_NOTIFY: |
4c46459c AE |
259 | case CEPH_OSD_OP_ASSERT_VER: |
260 | case CEPH_OSD_OP_WRITEFULL: | |
261 | case CEPH_OSD_OP_TRUNCATE: | |
262 | case CEPH_OSD_OP_ZERO: | |
263 | case CEPH_OSD_OP_DELETE: | |
264 | case CEPH_OSD_OP_APPEND: | |
265 | case CEPH_OSD_OP_SETTRUNC: | |
266 | case CEPH_OSD_OP_TRIMTRUNC: | |
267 | case CEPH_OSD_OP_TMAPUP: | |
268 | case CEPH_OSD_OP_TMAPPUT: | |
269 | case CEPH_OSD_OP_TMAPGET: | |
270 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 271 | case CEPH_OSD_OP_ROLLBACK: |
4c46459c AE |
272 | case CEPH_OSD_OP_OMAPGETKEYS: |
273 | case CEPH_OSD_OP_OMAPGETVALS: | |
274 | case CEPH_OSD_OP_OMAPGETHEADER: | |
275 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
276 | case CEPH_OSD_OP_MODE_RD: | |
277 | case CEPH_OSD_OP_OMAPSETVALS: | |
278 | case CEPH_OSD_OP_OMAPSETHEADER: | |
279 | case CEPH_OSD_OP_OMAPCLEAR: | |
280 | case CEPH_OSD_OP_OMAPRMKEYS: | |
281 | case CEPH_OSD_OP_OMAP_CMP: | |
282 | case CEPH_OSD_OP_CLONERANGE: | |
283 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
284 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 285 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 286 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
287 | case CEPH_OSD_OP_CMPXATTR: |
288 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
289 | case CEPH_OSD_OP_SETXATTRS: |
290 | case CEPH_OSD_OP_RESETXATTRS: | |
291 | case CEPH_OSD_OP_RMXATTR: | |
292 | case CEPH_OSD_OP_PULL: | |
293 | case CEPH_OSD_OP_PUSH: | |
294 | case CEPH_OSD_OP_BALANCEREADS: | |
295 | case CEPH_OSD_OP_UNBALANCEREADS: | |
296 | case CEPH_OSD_OP_SCRUB: | |
297 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
298 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
299 | case CEPH_OSD_OP_SCRUB_STOP: | |
300 | case CEPH_OSD_OP_SCRUB_MAP: | |
301 | case CEPH_OSD_OP_WRLOCK: | |
302 | case CEPH_OSD_OP_WRUNLOCK: | |
303 | case CEPH_OSD_OP_RDLOCK: | |
304 | case CEPH_OSD_OP_RDUNLOCK: | |
305 | case CEPH_OSD_OP_UPLOCK: | |
306 | case CEPH_OSD_OP_DNLOCK: | |
307 | case CEPH_OSD_OP_PGLS: | |
308 | case CEPH_OSD_OP_PGLS_FILTER: | |
309 | pr_err("unsupported osd opcode %s\n", | |
8f63ca2d | 310 | ceph_osd_op_name(src->op)); |
4c46459c AE |
311 | WARN_ON(1); |
312 | break; | |
68b4476b YS |
313 | } |
314 | dst->payload_len = cpu_to_le32(src->payload_len); | |
315 | } | |
316 | ||
3499e8a5 YS |
317 | /* |
318 | * build new request AND message | |
319 | * | |
320 | */ | |
321 | void ceph_osdc_build_request(struct ceph_osd_request *req, | |
1b83bef2 | 322 | u64 off, u64 len, unsigned int num_ops, |
68b4476b | 323 | struct ceph_osd_req_op *src_ops, |
4d6b250b | 324 | struct ceph_snap_context *snapc, u64 snap_id, |
af77f26c | 325 | struct timespec *mtime) |
3499e8a5 YS |
326 | { |
327 | struct ceph_msg *msg = req->r_request; | |
68b4476b | 328 | struct ceph_osd_req_op *src_op; |
3499e8a5 | 329 | void *p; |
1b83bef2 | 330 | size_t msg_size; |
3499e8a5 | 331 | int flags = req->r_flags; |
f44246e3 | 332 | u64 data_len; |
68b4476b | 333 | int i; |
3499e8a5 | 334 | |
1b83bef2 SW |
335 | req->r_num_ops = num_ops; |
336 | req->r_snapid = snap_id; | |
f24e9980 SW |
337 | req->r_snapc = ceph_get_snap_context(snapc); |
338 | ||
1b83bef2 SW |
339 | /* encode request */ |
340 | msg->hdr.version = cpu_to_le16(4); | |
341 | ||
342 | p = msg->front.iov_base; | |
343 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
344 | req->r_request_osdmap_epoch = p; | |
345 | p += 4; | |
346 | req->r_request_flags = p; | |
347 | p += 4; | |
348 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
349 | ceph_encode_timespec(p, mtime); | |
350 | p += sizeof(struct ceph_timespec); | |
351 | req->r_request_reassert_version = p; | |
352 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
353 | ||
354 | /* oloc */ | |
355 | ceph_encode_8(&p, 4); | |
356 | ceph_encode_8(&p, 4); | |
357 | ceph_encode_32(&p, 8 + 4 + 4); | |
358 | req->r_request_pool = p; | |
359 | p += 8; | |
360 | ceph_encode_32(&p, -1); /* preferred */ | |
361 | ceph_encode_32(&p, 0); /* key len */ | |
362 | ||
363 | ceph_encode_8(&p, 1); | |
364 | req->r_request_pgid = p; | |
365 | p += 8 + 4; | |
366 | ceph_encode_32(&p, -1); /* preferred */ | |
367 | ||
368 | /* oid */ | |
369 | ceph_encode_32(&p, req->r_oid_len); | |
af77f26c | 370 | memcpy(p, req->r_oid, req->r_oid_len); |
1b83bef2 | 371 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); |
af77f26c | 372 | p += req->r_oid_len; |
f24e9980 | 373 | |
1b83bef2 SW |
374 | /* ops */ |
375 | ceph_encode_16(&p, num_ops); | |
68b4476b | 376 | src_op = src_ops; |
1b83bef2 SW |
377 | req->r_request_ops = p; |
378 | for (i = 0; i < num_ops; i++, src_op++) { | |
379 | osd_req_encode_op(req, p, src_op); | |
380 | p += sizeof(struct ceph_osd_op); | |
381 | } | |
68b4476b | 382 | |
1b83bef2 SW |
383 | /* snaps */ |
384 | ceph_encode_64(&p, req->r_snapid); | |
385 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
386 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
387 | if (req->r_snapc) { | |
f24e9980 | 388 | for (i = 0; i < snapc->num_snaps; i++) { |
1b83bef2 | 389 | ceph_encode_64(&p, req->r_snapc->snaps[i]); |
f24e9980 SW |
390 | } |
391 | } | |
392 | ||
1b83bef2 SW |
393 | req->r_request_attempts = p; |
394 | p += 4; | |
395 | ||
f44246e3 | 396 | data_len = req->r_trail.length; |
68b4476b YS |
397 | if (flags & CEPH_OSD_FLAG_WRITE) { |
398 | req->r_request->hdr.data_off = cpu_to_le16(off); | |
f44246e3 | 399 | data_len += len; |
68b4476b | 400 | } |
f44246e3 | 401 | req->r_request->hdr.data_len = cpu_to_le32(data_len); |
c5c6b19d | 402 | |
f24e9980 | 403 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
404 | msg_size = p - msg->front.iov_base; |
405 | msg->front.iov_len = msg_size; | |
406 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
1b83bef2 SW |
407 | |
408 | dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, | |
409 | num_ops); | |
3499e8a5 YS |
410 | return; |
411 | } | |
3d14c5d2 | 412 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
413 | |
414 | /* | |
415 | * build new request AND message, calculate layout, and adjust file | |
416 | * extent as needed. | |
417 | * | |
418 | * if the file was recently truncated, we include information about its | |
419 | * old and new size so that the object can be updated appropriately. (we | |
420 | * avoid synchronously deleting truncated objects because it's slow.) | |
421 | * | |
422 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
423 | * data quickly. | |
424 | */ | |
425 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
426 | struct ceph_file_layout *layout, | |
427 | struct ceph_vino vino, | |
428 | u64 off, u64 *plen, | |
429 | int opcode, int flags, | |
430 | struct ceph_snap_context *snapc, | |
431 | int do_sync, | |
432 | u32 truncate_seq, | |
433 | u64 truncate_size, | |
434 | struct timespec *mtime, | |
a3bea47e | 435 | bool use_mempool, |
b7495fc2 | 436 | int page_align) |
3499e8a5 | 437 | { |
ae7ca4a3 | 438 | struct ceph_osd_req_op ops[2]; |
68b4476b | 439 | struct ceph_osd_request *req; |
ae7ca4a3 | 440 | unsigned int num_op = 1; |
47a05811 | 441 | u64 bno = 0; |
6816282d | 442 | int r; |
68b4476b | 443 | |
ae7ca4a3 AE |
444 | memset(&ops, 0, sizeof ops); |
445 | ||
68b4476b YS |
446 | ops[0].op = opcode; |
447 | ops[0].extent.truncate_seq = truncate_seq; | |
448 | ops[0].extent.truncate_size = truncate_size; | |
68b4476b YS |
449 | |
450 | if (do_sync) { | |
451 | ops[1].op = CEPH_OSD_OP_STARTSYNC; | |
ae7ca4a3 AE |
452 | num_op++; |
453 | } | |
68b4476b | 454 | |
ae7ca4a3 AE |
455 | req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, |
456 | GFP_NOFS); | |
4ad12621 | 457 | if (!req) |
6816282d | 458 | return ERR_PTR(-ENOMEM); |
d178a9e7 | 459 | req->r_flags = flags; |
3499e8a5 YS |
460 | |
461 | /* calculate max write size */ | |
60cf5992 | 462 | r = calc_layout(layout, off, plen, ops, &bno); |
3ff5f385 AE |
463 | if (r < 0) { |
464 | ceph_osdc_put_request(req); | |
6816282d | 465 | return ERR_PTR(r); |
3ff5f385 | 466 | } |
47a05811 | 467 | |
3499e8a5 YS |
468 | req->r_file_layout = *layout; /* keep a copy */ |
469 | ||
dbe0fc41 AE |
470 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); |
471 | req->r_oid_len = strlen(req->r_oid); | |
472 | ||
60cf5992 AE |
473 | /* The alignment may differ from the natural (file) alignment */ |
474 | ||
9bb0ce2b | 475 | req->r_num_pages = calc_pages_for(page_align, *plen); |
b7495fc2 SW |
476 | req->r_page_alignment = page_align; |
477 | ||
ae7ca4a3 AE |
478 | ceph_osdc_build_request(req, off, *plen, num_op, ops, |
479 | snapc, vino.snap, mtime); | |
3499e8a5 | 480 | |
f24e9980 SW |
481 | return req; |
482 | } | |
3d14c5d2 | 483 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
484 | |
485 | /* | |
486 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
487 | */ | |
488 | static void __insert_request(struct ceph_osd_client *osdc, | |
489 | struct ceph_osd_request *new) | |
490 | { | |
491 | struct rb_node **p = &osdc->requests.rb_node; | |
492 | struct rb_node *parent = NULL; | |
493 | struct ceph_osd_request *req = NULL; | |
494 | ||
495 | while (*p) { | |
496 | parent = *p; | |
497 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
498 | if (new->r_tid < req->r_tid) | |
499 | p = &(*p)->rb_left; | |
500 | else if (new->r_tid > req->r_tid) | |
501 | p = &(*p)->rb_right; | |
502 | else | |
503 | BUG(); | |
504 | } | |
505 | ||
506 | rb_link_node(&new->r_node, parent, p); | |
507 | rb_insert_color(&new->r_node, &osdc->requests); | |
508 | } | |
509 | ||
510 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
511 | u64 tid) | |
512 | { | |
513 | struct ceph_osd_request *req; | |
514 | struct rb_node *n = osdc->requests.rb_node; | |
515 | ||
516 | while (n) { | |
517 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
518 | if (tid < req->r_tid) | |
519 | n = n->rb_left; | |
520 | else if (tid > req->r_tid) | |
521 | n = n->rb_right; | |
522 | else | |
523 | return req; | |
524 | } | |
525 | return NULL; | |
526 | } | |
527 | ||
528 | static struct ceph_osd_request * | |
529 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
530 | u64 tid) | |
531 | { | |
532 | struct ceph_osd_request *req; | |
533 | struct rb_node *n = osdc->requests.rb_node; | |
534 | ||
535 | while (n) { | |
536 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
537 | if (tid < req->r_tid) { | |
538 | if (!n->rb_left) | |
539 | return req; | |
540 | n = n->rb_left; | |
541 | } else if (tid > req->r_tid) { | |
542 | n = n->rb_right; | |
543 | } else { | |
544 | return req; | |
545 | } | |
546 | } | |
547 | return NULL; | |
548 | } | |
549 | ||
6f6c7006 SW |
550 | /* |
551 | * Resubmit requests pending on the given osd. | |
552 | */ | |
553 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
554 | struct ceph_osd *osd) | |
555 | { | |
a40c4f10 | 556 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
557 | int err; |
558 | ||
559 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
560 | err = __reset_osd(osdc, osd); | |
685a7555 | 561 | if (err) |
6f6c7006 SW |
562 | return; |
563 | ||
564 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { | |
565 | list_move(&req->r_req_lru_item, &osdc->req_unsent); | |
566 | dout("requeued %p tid %llu osd%d\n", req, req->r_tid, | |
567 | osd->o_osd); | |
a40c4f10 YS |
568 | if (!req->r_linger) |
569 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
570 | } | |
571 | ||
572 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, | |
573 | r_linger_osd) { | |
77f38e0e SW |
574 | /* |
575 | * reregister request prior to unregistering linger so | |
576 | * that r_osd is preserved. | |
577 | */ | |
578 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 579 | __register_request(osdc, req); |
77f38e0e SW |
580 | list_add(&req->r_req_lru_item, &osdc->req_unsent); |
581 | list_add(&req->r_osd_item, &req->r_osd->o_requests); | |
582 | __unregister_linger_request(osdc, req); | |
a40c4f10 YS |
583 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
584 | osd->o_osd); | |
6f6c7006 SW |
585 | } |
586 | } | |
587 | ||
f24e9980 | 588 | /* |
81b024e7 | 589 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
590 | */ |
591 | static void osd_reset(struct ceph_connection *con) | |
592 | { | |
593 | struct ceph_osd *osd = con->private; | |
594 | struct ceph_osd_client *osdc; | |
595 | ||
596 | if (!osd) | |
597 | return; | |
598 | dout("osd_reset osd%d\n", osd->o_osd); | |
599 | osdc = osd->o_osdc; | |
f24e9980 | 600 | down_read(&osdc->map_sem); |
83aff95e SW |
601 | mutex_lock(&osdc->request_mutex); |
602 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 603 | __send_queued(osdc); |
83aff95e | 604 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
605 | up_read(&osdc->map_sem); |
606 | } | |
607 | ||
608 | /* | |
609 | * Track open sessions with osds. | |
610 | */ | |
e10006f8 | 611 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
612 | { |
613 | struct ceph_osd *osd; | |
614 | ||
615 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
616 | if (!osd) | |
617 | return NULL; | |
618 | ||
619 | atomic_set(&osd->o_ref, 1); | |
620 | osd->o_osdc = osdc; | |
e10006f8 | 621 | osd->o_osd = onum; |
f407731d | 622 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 623 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 624 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 625 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
626 | osd->o_incarnation = 1; |
627 | ||
b7a9e5dd | 628 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 629 | |
422d2cb8 | 630 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
631 | return osd; |
632 | } | |
633 | ||
634 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
635 | { | |
636 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
637 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
638 | atomic_read(&osd->o_ref)); | |
639 | return osd; | |
640 | } else { | |
641 | dout("get_osd %p FAIL\n", osd); | |
642 | return NULL; | |
643 | } | |
644 | } | |
645 | ||
646 | static void put_osd(struct ceph_osd *osd) | |
647 | { | |
648 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
649 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 650 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
651 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
652 | ||
a255651d | 653 | if (ac->ops && ac->ops->destroy_authorizer) |
6c4a1915 | 654 | ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 655 | kfree(osd); |
79494d1b | 656 | } |
f24e9980 SW |
657 | } |
658 | ||
659 | /* | |
660 | * remove an osd from our map | |
661 | */ | |
f5a2041b | 662 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 663 | { |
f5a2041b | 664 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
665 | BUG_ON(!list_empty(&osd->o_requests)); |
666 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 667 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
668 | ceph_con_close(&osd->o_con); |
669 | put_osd(osd); | |
670 | } | |
671 | ||
aca420bc SW |
672 | static void remove_all_osds(struct ceph_osd_client *osdc) |
673 | { | |
048a9d2d | 674 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
675 | mutex_lock(&osdc->request_mutex); |
676 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
677 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
678 | struct ceph_osd, o_node); | |
679 | __remove_osd(osdc, osd); | |
680 | } | |
681 | mutex_unlock(&osdc->request_mutex); | |
682 | } | |
683 | ||
f5a2041b YS |
684 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
685 | struct ceph_osd *osd) | |
686 | { | |
687 | dout("__move_osd_to_lru %p\n", osd); | |
688 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
689 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 690 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
691 | } |
692 | ||
693 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
694 | { | |
695 | dout("__remove_osd_from_lru %p\n", osd); | |
696 | if (!list_empty(&osd->o_osd_lru)) | |
697 | list_del_init(&osd->o_osd_lru); | |
698 | } | |
699 | ||
aca420bc | 700 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
701 | { |
702 | struct ceph_osd *osd, *nosd; | |
703 | ||
704 | dout("__remove_old_osds %p\n", osdc); | |
705 | mutex_lock(&osdc->request_mutex); | |
706 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 707 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
708 | break; |
709 | __remove_osd(osdc, osd); | |
710 | } | |
711 | mutex_unlock(&osdc->request_mutex); | |
712 | } | |
713 | ||
f24e9980 SW |
714 | /* |
715 | * reset osd connect | |
716 | */ | |
f5a2041b | 717 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 718 | { |
c3acb181 | 719 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 720 | |
f5a2041b | 721 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
722 | if (list_empty(&osd->o_requests) && |
723 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 724 | __remove_osd(osdc, osd); |
c3acb181 AE |
725 | |
726 | return -ENODEV; | |
727 | } | |
728 | ||
729 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
730 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
731 | !ceph_con_opened(&osd->o_con)) { | |
732 | struct ceph_osd_request *req; | |
733 | ||
87b315a5 SW |
734 | dout(" osd addr hasn't changed and connection never opened," |
735 | " letting msgr retry"); | |
736 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
737 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
738 | req->r_stamp = jiffies; | |
c3acb181 AE |
739 | |
740 | return -EAGAIN; | |
f24e9980 | 741 | } |
c3acb181 AE |
742 | |
743 | ceph_con_close(&osd->o_con); | |
744 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
745 | osd->o_incarnation++; | |
746 | ||
747 | return 0; | |
f24e9980 SW |
748 | } |
749 | ||
750 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
751 | { | |
752 | struct rb_node **p = &osdc->osds.rb_node; | |
753 | struct rb_node *parent = NULL; | |
754 | struct ceph_osd *osd = NULL; | |
755 | ||
aca420bc | 756 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
757 | while (*p) { |
758 | parent = *p; | |
759 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
760 | if (new->o_osd < osd->o_osd) | |
761 | p = &(*p)->rb_left; | |
762 | else if (new->o_osd > osd->o_osd) | |
763 | p = &(*p)->rb_right; | |
764 | else | |
765 | BUG(); | |
766 | } | |
767 | ||
768 | rb_link_node(&new->o_node, parent, p); | |
769 | rb_insert_color(&new->o_node, &osdc->osds); | |
770 | } | |
771 | ||
772 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
773 | { | |
774 | struct ceph_osd *osd; | |
775 | struct rb_node *n = osdc->osds.rb_node; | |
776 | ||
777 | while (n) { | |
778 | osd = rb_entry(n, struct ceph_osd, o_node); | |
779 | if (o < osd->o_osd) | |
780 | n = n->rb_left; | |
781 | else if (o > osd->o_osd) | |
782 | n = n->rb_right; | |
783 | else | |
784 | return osd; | |
785 | } | |
786 | return NULL; | |
787 | } | |
788 | ||
422d2cb8 YS |
789 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
790 | { | |
791 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 792 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
793 | } |
794 | ||
795 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
796 | { | |
797 | cancel_delayed_work(&osdc->timeout_work); | |
798 | } | |
f24e9980 SW |
799 | |
800 | /* | |
801 | * Register request, assign tid. If this is the first request, set up | |
802 | * the timeout event. | |
803 | */ | |
a40c4f10 YS |
804 | static void __register_request(struct ceph_osd_client *osdc, |
805 | struct ceph_osd_request *req) | |
f24e9980 | 806 | { |
f24e9980 | 807 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 808 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 809 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
810 | __insert_request(osdc, req); |
811 | ceph_osdc_get_request(req); | |
812 | osdc->num_requests++; | |
f24e9980 | 813 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
814 | dout(" first request, scheduling timeout\n"); |
815 | __schedule_osd_timeout(osdc); | |
f24e9980 | 816 | } |
a40c4f10 YS |
817 | } |
818 | ||
819 | static void register_request(struct ceph_osd_client *osdc, | |
820 | struct ceph_osd_request *req) | |
821 | { | |
822 | mutex_lock(&osdc->request_mutex); | |
823 | __register_request(osdc, req); | |
f24e9980 SW |
824 | mutex_unlock(&osdc->request_mutex); |
825 | } | |
826 | ||
827 | /* | |
828 | * called under osdc->request_mutex | |
829 | */ | |
830 | static void __unregister_request(struct ceph_osd_client *osdc, | |
831 | struct ceph_osd_request *req) | |
832 | { | |
35f9f8a0 SW |
833 | if (RB_EMPTY_NODE(&req->r_node)) { |
834 | dout("__unregister_request %p tid %lld not registered\n", | |
835 | req, req->r_tid); | |
836 | return; | |
837 | } | |
838 | ||
f24e9980 SW |
839 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
840 | rb_erase(&req->r_node, &osdc->requests); | |
841 | osdc->num_requests--; | |
842 | ||
0ba6478d SW |
843 | if (req->r_osd) { |
844 | /* make sure the original request isn't in flight. */ | |
6740a845 | 845 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
846 | |
847 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
848 | if (list_empty(&req->r_osd->o_requests) && |
849 | list_empty(&req->r_osd->o_linger_requests)) { | |
850 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 851 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 852 | } |
fbdb9190 | 853 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 854 | req->r_osd = NULL; |
0ba6478d | 855 | } |
f24e9980 | 856 | |
7d5f2481 | 857 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
858 | ceph_osdc_put_request(req); |
859 | ||
422d2cb8 YS |
860 | if (osdc->num_requests == 0) { |
861 | dout(" no requests, canceling timeout\n"); | |
862 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
863 | } |
864 | } | |
865 | ||
866 | /* | |
867 | * Cancel a previously queued request message | |
868 | */ | |
869 | static void __cancel_request(struct ceph_osd_request *req) | |
870 | { | |
6bc18876 | 871 | if (req->r_sent && req->r_osd) { |
6740a845 | 872 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
873 | req->r_sent = 0; |
874 | } | |
875 | } | |
876 | ||
a40c4f10 YS |
877 | static void __register_linger_request(struct ceph_osd_client *osdc, |
878 | struct ceph_osd_request *req) | |
879 | { | |
880 | dout("__register_linger_request %p\n", req); | |
881 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
882 | if (req->r_osd) |
883 | list_add_tail(&req->r_linger_osd, | |
884 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
885 | } |
886 | ||
887 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
888 | struct ceph_osd_request *req) | |
889 | { | |
890 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 891 | list_del_init(&req->r_linger_item); |
a40c4f10 | 892 | if (req->r_osd) { |
a40c4f10 YS |
893 | list_del_init(&req->r_linger_osd); |
894 | ||
895 | if (list_empty(&req->r_osd->o_requests) && | |
896 | list_empty(&req->r_osd->o_linger_requests)) { | |
897 | dout("moving osd to %p lru\n", req->r_osd); | |
898 | __move_osd_to_lru(osdc, req->r_osd); | |
899 | } | |
fbdb9190 SW |
900 | if (list_empty(&req->r_osd_item)) |
901 | req->r_osd = NULL; | |
a40c4f10 YS |
902 | } |
903 | } | |
904 | ||
905 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
906 | struct ceph_osd_request *req) | |
907 | { | |
908 | mutex_lock(&osdc->request_mutex); | |
909 | if (req->r_linger) { | |
910 | __unregister_linger_request(osdc, req); | |
911 | ceph_osdc_put_request(req); | |
912 | } | |
913 | mutex_unlock(&osdc->request_mutex); | |
914 | } | |
915 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
916 | ||
917 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
918 | struct ceph_osd_request *req) | |
919 | { | |
920 | if (!req->r_linger) { | |
921 | dout("set_request_linger %p\n", req); | |
922 | req->r_linger = 1; | |
923 | /* | |
924 | * caller is now responsible for calling | |
925 | * unregister_linger_request | |
926 | */ | |
927 | ceph_osdc_get_request(req); | |
928 | } | |
929 | } | |
930 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
931 | ||
f24e9980 SW |
932 | /* |
933 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
934 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 935 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 936 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
937 | * |
938 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
939 | * | |
940 | * Caller should hold map_sem for read and request_mutex. | |
941 | */ | |
6f6c7006 | 942 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 943 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 944 | { |
5b191d99 | 945 | struct ceph_pg pgid; |
d85b7056 SW |
946 | int acting[CEPH_PG_MAX_SIZE]; |
947 | int o = -1, num = 0; | |
f24e9980 | 948 | int err; |
f24e9980 | 949 | |
6f6c7006 | 950 | dout("map_request %p tid %lld\n", req, req->r_tid); |
2169aea6 | 951 | err = ceph_calc_object_layout(&pgid, req->r_oid, |
f24e9980 | 952 | &req->r_file_layout, osdc->osdmap); |
6f6c7006 SW |
953 | if (err) { |
954 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 955 | return err; |
6f6c7006 | 956 | } |
7740a42f SW |
957 | req->r_pgid = pgid; |
958 | ||
d85b7056 SW |
959 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
960 | if (err > 0) { | |
961 | o = acting[0]; | |
962 | num = err; | |
963 | } | |
f24e9980 | 964 | |
38d6453c SW |
965 | if ((!force_resend && |
966 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
967 | req->r_sent >= req->r_osd->o_incarnation && |
968 | req->r_num_pg_osds == num && | |
969 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
970 | (req->r_osd == NULL && o == -1)) |
971 | return 0; /* no change */ | |
972 | ||
5b191d99 SW |
973 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
974 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
975 | req->r_osd ? req->r_osd->o_osd : -1); |
976 | ||
d85b7056 SW |
977 | /* record full pg acting set */ |
978 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
979 | req->r_num_pg_osds = num; | |
980 | ||
f24e9980 SW |
981 | if (req->r_osd) { |
982 | __cancel_request(req); | |
983 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
984 | req->r_osd = NULL; |
985 | } | |
986 | ||
987 | req->r_osd = __lookup_osd(osdc, o); | |
988 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 989 | err = -ENOMEM; |
e10006f8 | 990 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
991 | if (!req->r_osd) { |
992 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 993 | goto out; |
6f6c7006 | 994 | } |
f24e9980 | 995 | |
6f6c7006 | 996 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
997 | __insert_osd(osdc, req->r_osd); |
998 | ||
b7a9e5dd SW |
999 | ceph_con_open(&req->r_osd->o_con, |
1000 | CEPH_ENTITY_TYPE_OSD, o, | |
1001 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1002 | } |
1003 | ||
f5a2041b YS |
1004 | if (req->r_osd) { |
1005 | __remove_osd_from_lru(req->r_osd); | |
f24e9980 | 1006 | list_add(&req->r_osd_item, &req->r_osd->o_requests); |
6f6c7006 SW |
1007 | list_move(&req->r_req_lru_item, &osdc->req_unsent); |
1008 | } else { | |
1009 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f5a2041b | 1010 | } |
d85b7056 | 1011 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1012 | |
1013 | out: | |
f24e9980 SW |
1014 | return err; |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * caller should hold map_sem (for read) and request_mutex | |
1019 | */ | |
56e925b6 SW |
1020 | static void __send_request(struct ceph_osd_client *osdc, |
1021 | struct ceph_osd_request *req) | |
f24e9980 | 1022 | { |
1b83bef2 | 1023 | void *p; |
f24e9980 | 1024 | |
1b83bef2 SW |
1025 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1026 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1027 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1028 | ||
1029 | /* fill in message content that changes each time we send it */ | |
1030 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1031 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1032 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1033 | p = req->r_request_pgid; | |
1034 | ceph_encode_64(&p, req->r_pgid.pool); | |
1035 | ceph_encode_32(&p, req->r_pgid.seed); | |
1036 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1037 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1038 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1039 | |
3dd72fc0 | 1040 | req->r_stamp = jiffies; |
07a27e22 | 1041 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1042 | |
1043 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1044 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1045 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1046 | } |
1047 | ||
6f6c7006 SW |
1048 | /* |
1049 | * Send any requests in the queue (req_unsent). | |
1050 | */ | |
f9d25199 | 1051 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1052 | { |
1053 | struct ceph_osd_request *req, *tmp; | |
1054 | ||
f9d25199 AE |
1055 | dout("__send_queued\n"); |
1056 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1057 | __send_request(osdc, req); |
6f6c7006 SW |
1058 | } |
1059 | ||
f24e9980 SW |
1060 | /* |
1061 | * Timeout callback, called every N seconds when 1 or more osd | |
1062 | * requests has been active for more than N seconds. When this | |
1063 | * happens, we ping all OSDs with requests who have timed out to | |
1064 | * ensure any communications channel reset is detected. Reset the | |
1065 | * request timeouts another N seconds in the future as we go. | |
1066 | * Reschedule the timeout event another N seconds in future (unless | |
1067 | * there are no open requests). | |
1068 | */ | |
1069 | static void handle_timeout(struct work_struct *work) | |
1070 | { | |
1071 | struct ceph_osd_client *osdc = | |
1072 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1073 | struct ceph_osd_request *req; |
f24e9980 | 1074 | struct ceph_osd *osd; |
422d2cb8 | 1075 | unsigned long keepalive = |
3d14c5d2 | 1076 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1077 | struct list_head slow_osds; |
f24e9980 SW |
1078 | dout("timeout\n"); |
1079 | down_read(&osdc->map_sem); | |
1080 | ||
1081 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1082 | ||
1083 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1084 | |
422d2cb8 YS |
1085 | /* |
1086 | * ping osds that are a bit slow. this ensures that if there | |
1087 | * is a break in the TCP connection we will notice, and reopen | |
1088 | * a connection with that osd (from the fault callback). | |
1089 | */ | |
1090 | INIT_LIST_HEAD(&slow_osds); | |
1091 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1092 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1093 | break; |
1094 | ||
1095 | osd = req->r_osd; | |
1096 | BUG_ON(!osd); | |
1097 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1098 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1099 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1100 | } | |
1101 | while (!list_empty(&slow_osds)) { | |
1102 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1103 | o_keepalive_item); | |
1104 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1105 | ceph_con_keepalive(&osd->o_con); |
1106 | } | |
1107 | ||
422d2cb8 | 1108 | __schedule_osd_timeout(osdc); |
f9d25199 | 1109 | __send_queued(osdc); |
f24e9980 | 1110 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1111 | up_read(&osdc->map_sem); |
1112 | } | |
1113 | ||
f5a2041b YS |
1114 | static void handle_osds_timeout(struct work_struct *work) |
1115 | { | |
1116 | struct ceph_osd_client *osdc = | |
1117 | container_of(work, struct ceph_osd_client, | |
1118 | osds_timeout_work.work); | |
1119 | unsigned long delay = | |
3d14c5d2 | 1120 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1121 | |
1122 | dout("osds timeout\n"); | |
1123 | down_read(&osdc->map_sem); | |
aca420bc | 1124 | remove_old_osds(osdc); |
f5a2041b YS |
1125 | up_read(&osdc->map_sem); |
1126 | ||
1127 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1128 | round_jiffies_relative(delay)); | |
1129 | } | |
1130 | ||
25845472 SW |
1131 | static void complete_request(struct ceph_osd_request *req) |
1132 | { | |
1133 | if (req->r_safe_callback) | |
1134 | req->r_safe_callback(req, NULL); | |
1135 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1136 | } | |
1137 | ||
1b83bef2 SW |
1138 | static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) |
1139 | { | |
1140 | __u8 v; | |
1141 | ||
1142 | ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); | |
1143 | v = ceph_decode_8(p); | |
1144 | if (v > 1) { | |
1145 | pr_warning("do not understand pg encoding %d > 1", v); | |
1146 | return -EINVAL; | |
1147 | } | |
1148 | pgid->pool = ceph_decode_64(p); | |
1149 | pgid->seed = ceph_decode_32(p); | |
1150 | *p += 4; | |
1151 | return 0; | |
1152 | ||
1153 | bad: | |
1154 | pr_warning("incomplete pg encoding"); | |
1155 | return -EINVAL; | |
1156 | } | |
1157 | ||
f24e9980 SW |
1158 | /* |
1159 | * handle osd op reply. either call the callback if it is specified, | |
1160 | * or do the completion to wake up the waiting thread. | |
1161 | */ | |
350b1c32 SW |
1162 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1163 | struct ceph_connection *con) | |
f24e9980 | 1164 | { |
1b83bef2 | 1165 | void *p, *end; |
f24e9980 SW |
1166 | struct ceph_osd_request *req; |
1167 | u64 tid; | |
1b83bef2 SW |
1168 | int object_len; |
1169 | int numops, payload_len, flags; | |
0ceed5db | 1170 | s32 result; |
1b83bef2 SW |
1171 | s32 retry_attempt; |
1172 | struct ceph_pg pg; | |
1173 | int err; | |
1174 | u32 reassert_epoch; | |
1175 | u64 reassert_version; | |
1176 | u32 osdmap_epoch; | |
0d5af164 | 1177 | int already_completed; |
1b83bef2 | 1178 | int i; |
f24e9980 | 1179 | |
6df058c0 | 1180 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1181 | dout("handle_reply %p tid %llu\n", msg, tid); |
1182 | ||
1183 | p = msg->front.iov_base; | |
1184 | end = p + msg->front.iov_len; | |
1185 | ||
1186 | ceph_decode_need(&p, end, 4, bad); | |
1187 | object_len = ceph_decode_32(&p); | |
1188 | ceph_decode_need(&p, end, object_len, bad); | |
1189 | p += object_len; | |
1190 | ||
1191 | err = __decode_pgid(&p, end, &pg); | |
1192 | if (err) | |
f24e9980 | 1193 | goto bad; |
1b83bef2 SW |
1194 | |
1195 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1196 | flags = ceph_decode_64(&p); | |
1197 | result = ceph_decode_32(&p); | |
1198 | reassert_epoch = ceph_decode_32(&p); | |
1199 | reassert_version = ceph_decode_64(&p); | |
1200 | osdmap_epoch = ceph_decode_32(&p); | |
1201 | ||
f24e9980 SW |
1202 | /* lookup */ |
1203 | mutex_lock(&osdc->request_mutex); | |
1204 | req = __lookup_request(osdc, tid); | |
1205 | if (req == NULL) { | |
1206 | dout("handle_reply tid %llu dne\n", tid); | |
1207 | mutex_unlock(&osdc->request_mutex); | |
1208 | return; | |
1209 | } | |
1210 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1211 | |
1212 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1213 | req, result); | |
1214 | ||
1215 | ceph_decode_need(&p, end, 4, bad); | |
1216 | numops = ceph_decode_32(&p); | |
1217 | if (numops > CEPH_OSD_MAX_OP) | |
1218 | goto bad_put; | |
1219 | if (numops != req->r_num_ops) | |
1220 | goto bad_put; | |
1221 | payload_len = 0; | |
1222 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1223 | for (i = 0; i < numops; i++) { | |
1224 | struct ceph_osd_op *op = p; | |
1225 | int len; | |
1226 | ||
1227 | len = le32_to_cpu(op->payload_len); | |
1228 | req->r_reply_op_len[i] = len; | |
1229 | dout(" op %d has %d bytes\n", i, len); | |
1230 | payload_len += len; | |
1231 | p += sizeof(*op); | |
1232 | } | |
1233 | if (payload_len != le32_to_cpu(msg->hdr.data_len)) { | |
1234 | pr_warning("sum of op payload lens %d != data_len %d", | |
1235 | payload_len, le32_to_cpu(msg->hdr.data_len)); | |
1236 | goto bad_put; | |
1237 | } | |
1238 | ||
1239 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1240 | retry_attempt = ceph_decode_32(&p); | |
1241 | for (i = 0; i < numops; i++) | |
1242 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1243 | |
350b1c32 | 1244 | /* |
0d59ab81 | 1245 | * if this connection filled our message, drop our reference now, to |
350b1c32 SW |
1246 | * avoid a (safe but slower) revoke later. |
1247 | */ | |
0d59ab81 | 1248 | if (req->r_con_filling_msg == con && req->r_reply == msg) { |
c16e7869 | 1249 | dout(" dropping con_filling_msg ref %p\n", con); |
0d59ab81 | 1250 | req->r_con_filling_msg = NULL; |
0d47766f | 1251 | con->ops->put(con); |
350b1c32 SW |
1252 | } |
1253 | ||
f24e9980 | 1254 | if (!req->r_got_reply) { |
95c96174 | 1255 | unsigned int bytes; |
f24e9980 | 1256 | |
1b83bef2 | 1257 | req->r_result = result; |
f24e9980 SW |
1258 | bytes = le32_to_cpu(msg->hdr.data_len); |
1259 | dout("handle_reply result %d bytes %d\n", req->r_result, | |
1260 | bytes); | |
1261 | if (req->r_result == 0) | |
1262 | req->r_result = bytes; | |
1263 | ||
1264 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1265 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1266 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1267 | |
1268 | req->r_got_reply = 1; | |
1269 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1270 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1271 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1272 | goto done; |
1273 | } | |
1274 | ||
1275 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1276 | ||
a40c4f10 YS |
1277 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1278 | __register_linger_request(osdc, req); | |
1279 | ||
f24e9980 | 1280 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1281 | if (result < 0 || |
1282 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1283 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1284 | __unregister_request(osdc, req); | |
1285 | ||
0d5af164 AE |
1286 | already_completed = req->r_completed; |
1287 | req->r_completed = 1; | |
f24e9980 | 1288 | mutex_unlock(&osdc->request_mutex); |
0d5af164 AE |
1289 | if (already_completed) |
1290 | goto done; | |
f24e9980 SW |
1291 | |
1292 | if (req->r_callback) | |
1293 | req->r_callback(req, msg); | |
1294 | else | |
03066f23 | 1295 | complete_all(&req->r_completion); |
f24e9980 | 1296 | |
25845472 SW |
1297 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1298 | complete_request(req); | |
f24e9980 SW |
1299 | |
1300 | done: | |
a40c4f10 | 1301 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1302 | ceph_osdc_put_request(req); |
1303 | return; | |
1304 | ||
1b83bef2 SW |
1305 | bad_put: |
1306 | ceph_osdc_put_request(req); | |
f24e9980 | 1307 | bad: |
1b83bef2 SW |
1308 | pr_err("corrupt osd_op_reply got %d %d\n", |
1309 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1310 | ceph_msg_dump(msg); |
f24e9980 SW |
1311 | } |
1312 | ||
6f6c7006 | 1313 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1314 | { |
f24e9980 | 1315 | struct rb_node *p, *n; |
f24e9980 | 1316 | |
6f6c7006 SW |
1317 | for (p = rb_first(&osdc->osds); p; p = n) { |
1318 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1319 | |
6f6c7006 SW |
1320 | n = rb_next(p); |
1321 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1322 | memcmp(&osd->o_con.peer_addr, | |
1323 | ceph_osd_addr(osdc->osdmap, | |
1324 | osd->o_osd), | |
1325 | sizeof(struct ceph_entity_addr)) != 0) | |
1326 | __reset_osd(osdc, osd); | |
f24e9980 | 1327 | } |
422d2cb8 YS |
1328 | } |
1329 | ||
1330 | /* | |
6f6c7006 SW |
1331 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1332 | * no osd, request a new map. | |
422d2cb8 | 1333 | * |
e6d50f67 | 1334 | * Caller should hold map_sem for read. |
422d2cb8 | 1335 | */ |
38d6453c | 1336 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1337 | { |
a40c4f10 | 1338 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1339 | struct rb_node *p; |
1340 | int needmap = 0; | |
1341 | int err; | |
422d2cb8 | 1342 | |
38d6453c | 1343 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1344 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1345 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1346 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1347 | p = rb_next(p); |
ab60b16d AE |
1348 | |
1349 | /* | |
1350 | * For linger requests that have not yet been | |
1351 | * registered, move them to the linger list; they'll | |
1352 | * be sent to the osd in the loop below. Unregister | |
1353 | * the request before re-registering it as a linger | |
1354 | * request to ensure the __map_request() below | |
1355 | * will decide it needs to be sent. | |
1356 | */ | |
1357 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1358 | dout("%p tid %llu restart on osd%d\n", | |
1359 | req, req->r_tid, | |
1360 | req->r_osd ? req->r_osd->o_osd : -1); | |
1361 | __unregister_request(osdc, req); | |
1362 | __register_linger_request(osdc, req); | |
1363 | continue; | |
1364 | } | |
1365 | ||
38d6453c | 1366 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1367 | if (err < 0) |
1368 | continue; /* error */ | |
1369 | if (req->r_osd == NULL) { | |
1370 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1371 | needmap++; /* request a newer map */ | |
1372 | } else if (err > 0) { | |
6194ea89 SW |
1373 | if (!req->r_linger) { |
1374 | dout("%p tid %llu requeued on osd%d\n", req, | |
1375 | req->r_tid, | |
1376 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1377 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1378 | } |
1379 | } | |
a40c4f10 YS |
1380 | } |
1381 | ||
1382 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1383 | r_linger_item) { | |
1384 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1385 | ||
38d6453c | 1386 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1387 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1388 | if (err == 0) |
1389 | continue; /* no change and no osd was specified */ | |
1390 | if (err < 0) | |
1391 | continue; /* hrm! */ | |
1392 | if (req->r_osd == NULL) { | |
1393 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1394 | needmap++; /* request a newer map */ | |
1395 | continue; | |
6f6c7006 | 1396 | } |
a40c4f10 YS |
1397 | |
1398 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1399 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1400 | __register_request(osdc, req); |
c89ce05e | 1401 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1402 | } |
f24e9980 SW |
1403 | mutex_unlock(&osdc->request_mutex); |
1404 | ||
1405 | if (needmap) { | |
1406 | dout("%d requests for down osds, need new map\n", needmap); | |
1407 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1408 | } | |
e6d50f67 | 1409 | reset_changed_osds(osdc); |
422d2cb8 | 1410 | } |
6f6c7006 SW |
1411 | |
1412 | ||
f24e9980 SW |
1413 | /* |
1414 | * Process updated osd map. | |
1415 | * | |
1416 | * The message contains any number of incremental and full maps, normally | |
1417 | * indicating some sort of topology change in the cluster. Kick requests | |
1418 | * off to different OSDs as needed. | |
1419 | */ | |
1420 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1421 | { | |
1422 | void *p, *end, *next; | |
1423 | u32 nr_maps, maplen; | |
1424 | u32 epoch; | |
1425 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1426 | int err; | |
1427 | struct ceph_fsid fsid; | |
1428 | ||
1429 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1430 | p = msg->front.iov_base; | |
1431 | end = p + msg->front.iov_len; | |
1432 | ||
1433 | /* verify fsid */ | |
1434 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1435 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1436 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1437 | return; | |
f24e9980 SW |
1438 | |
1439 | down_write(&osdc->map_sem); | |
1440 | ||
1441 | /* incremental maps */ | |
1442 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1443 | dout(" %d inc maps\n", nr_maps); | |
1444 | while (nr_maps > 0) { | |
1445 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1446 | epoch = ceph_decode_32(&p); |
1447 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1448 | ceph_decode_need(&p, end, maplen, bad); |
1449 | next = p + maplen; | |
1450 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1451 | dout("applying incremental map %u len %d\n", | |
1452 | epoch, maplen); | |
1453 | newmap = osdmap_apply_incremental(&p, next, | |
1454 | osdc->osdmap, | |
15d9882c | 1455 | &osdc->client->msgr); |
f24e9980 SW |
1456 | if (IS_ERR(newmap)) { |
1457 | err = PTR_ERR(newmap); | |
1458 | goto bad; | |
1459 | } | |
30dc6381 | 1460 | BUG_ON(!newmap); |
f24e9980 SW |
1461 | if (newmap != osdc->osdmap) { |
1462 | ceph_osdmap_destroy(osdc->osdmap); | |
1463 | osdc->osdmap = newmap; | |
1464 | } | |
38d6453c | 1465 | kick_requests(osdc, 0); |
f24e9980 SW |
1466 | } else { |
1467 | dout("ignoring incremental map %u len %d\n", | |
1468 | epoch, maplen); | |
1469 | } | |
1470 | p = next; | |
1471 | nr_maps--; | |
1472 | } | |
1473 | if (newmap) | |
1474 | goto done; | |
1475 | ||
1476 | /* full maps */ | |
1477 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1478 | dout(" %d full maps\n", nr_maps); | |
1479 | while (nr_maps) { | |
1480 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1481 | epoch = ceph_decode_32(&p); |
1482 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1483 | ceph_decode_need(&p, end, maplen, bad); |
1484 | if (nr_maps > 1) { | |
1485 | dout("skipping non-latest full map %u len %d\n", | |
1486 | epoch, maplen); | |
1487 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1488 | dout("skipping full map %u len %d, " | |
1489 | "older than our %u\n", epoch, maplen, | |
1490 | osdc->osdmap->epoch); | |
1491 | } else { | |
38d6453c SW |
1492 | int skipped_map = 0; |
1493 | ||
f24e9980 SW |
1494 | dout("taking full map %u len %d\n", epoch, maplen); |
1495 | newmap = osdmap_decode(&p, p+maplen); | |
1496 | if (IS_ERR(newmap)) { | |
1497 | err = PTR_ERR(newmap); | |
1498 | goto bad; | |
1499 | } | |
30dc6381 | 1500 | BUG_ON(!newmap); |
f24e9980 SW |
1501 | oldmap = osdc->osdmap; |
1502 | osdc->osdmap = newmap; | |
38d6453c SW |
1503 | if (oldmap) { |
1504 | if (oldmap->epoch + 1 < newmap->epoch) | |
1505 | skipped_map = 1; | |
f24e9980 | 1506 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1507 | } |
1508 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1509 | } |
1510 | p += maplen; | |
1511 | nr_maps--; | |
1512 | } | |
1513 | ||
1514 | done: | |
1515 | downgrade_write(&osdc->map_sem); | |
1516 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1517 | |
1518 | /* | |
1519 | * subscribe to subsequent osdmap updates if full to ensure | |
1520 | * we find out when we are no longer full and stop returning | |
1521 | * ENOSPC. | |
1522 | */ | |
1523 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1524 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1525 | ||
f9d25199 AE |
1526 | mutex_lock(&osdc->request_mutex); |
1527 | __send_queued(osdc); | |
1528 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1529 | up_read(&osdc->map_sem); |
03066f23 | 1530 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1531 | return; |
1532 | ||
1533 | bad: | |
1534 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1535 | ceph_msg_dump(msg); |
f24e9980 SW |
1536 | up_write(&osdc->map_sem); |
1537 | return; | |
1538 | } | |
1539 | ||
a40c4f10 YS |
1540 | /* |
1541 | * watch/notify callback event infrastructure | |
1542 | * | |
1543 | * These callbacks are used both for watch and notify operations. | |
1544 | */ | |
1545 | static void __release_event(struct kref *kref) | |
1546 | { | |
1547 | struct ceph_osd_event *event = | |
1548 | container_of(kref, struct ceph_osd_event, kref); | |
1549 | ||
1550 | dout("__release_event %p\n", event); | |
1551 | kfree(event); | |
1552 | } | |
1553 | ||
1554 | static void get_event(struct ceph_osd_event *event) | |
1555 | { | |
1556 | kref_get(&event->kref); | |
1557 | } | |
1558 | ||
1559 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1560 | { | |
1561 | kref_put(&event->kref, __release_event); | |
1562 | } | |
1563 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1564 | ||
1565 | static void __insert_event(struct ceph_osd_client *osdc, | |
1566 | struct ceph_osd_event *new) | |
1567 | { | |
1568 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1569 | struct rb_node *parent = NULL; | |
1570 | struct ceph_osd_event *event = NULL; | |
1571 | ||
1572 | while (*p) { | |
1573 | parent = *p; | |
1574 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1575 | if (new->cookie < event->cookie) | |
1576 | p = &(*p)->rb_left; | |
1577 | else if (new->cookie > event->cookie) | |
1578 | p = &(*p)->rb_right; | |
1579 | else | |
1580 | BUG(); | |
1581 | } | |
1582 | ||
1583 | rb_link_node(&new->node, parent, p); | |
1584 | rb_insert_color(&new->node, &osdc->event_tree); | |
1585 | } | |
1586 | ||
1587 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1588 | u64 cookie) | |
1589 | { | |
1590 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1591 | struct rb_node *parent = NULL; | |
1592 | struct ceph_osd_event *event = NULL; | |
1593 | ||
1594 | while (*p) { | |
1595 | parent = *p; | |
1596 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1597 | if (cookie < event->cookie) | |
1598 | p = &(*p)->rb_left; | |
1599 | else if (cookie > event->cookie) | |
1600 | p = &(*p)->rb_right; | |
1601 | else | |
1602 | return event; | |
1603 | } | |
1604 | return NULL; | |
1605 | } | |
1606 | ||
1607 | static void __remove_event(struct ceph_osd_event *event) | |
1608 | { | |
1609 | struct ceph_osd_client *osdc = event->osdc; | |
1610 | ||
1611 | if (!RB_EMPTY_NODE(&event->node)) { | |
1612 | dout("__remove_event removed %p\n", event); | |
1613 | rb_erase(&event->node, &osdc->event_tree); | |
1614 | ceph_osdc_put_event(event); | |
1615 | } else { | |
1616 | dout("__remove_event didn't remove %p\n", event); | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1621 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1622 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1623 | { |
1624 | struct ceph_osd_event *event; | |
1625 | ||
1626 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1627 | if (!event) | |
1628 | return -ENOMEM; | |
1629 | ||
1630 | dout("create_event %p\n", event); | |
1631 | event->cb = event_cb; | |
3c663bbd | 1632 | event->one_shot = 0; |
a40c4f10 YS |
1633 | event->data = data; |
1634 | event->osdc = osdc; | |
1635 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1636 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1637 | kref_init(&event->kref); /* one ref for us */ |
1638 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1639 | |
1640 | spin_lock(&osdc->event_lock); | |
1641 | event->cookie = ++osdc->event_count; | |
1642 | __insert_event(osdc, event); | |
1643 | spin_unlock(&osdc->event_lock); | |
1644 | ||
1645 | *pevent = event; | |
1646 | return 0; | |
1647 | } | |
1648 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1649 | ||
1650 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1651 | { | |
1652 | struct ceph_osd_client *osdc = event->osdc; | |
1653 | ||
1654 | dout("cancel_event %p\n", event); | |
1655 | spin_lock(&osdc->event_lock); | |
1656 | __remove_event(event); | |
1657 | spin_unlock(&osdc->event_lock); | |
1658 | ceph_osdc_put_event(event); /* caller's */ | |
1659 | } | |
1660 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1661 | ||
1662 | ||
1663 | static void do_event_work(struct work_struct *work) | |
1664 | { | |
1665 | struct ceph_osd_event_work *event_work = | |
1666 | container_of(work, struct ceph_osd_event_work, work); | |
1667 | struct ceph_osd_event *event = event_work->event; | |
1668 | u64 ver = event_work->ver; | |
1669 | u64 notify_id = event_work->notify_id; | |
1670 | u8 opcode = event_work->opcode; | |
1671 | ||
1672 | dout("do_event_work completing %p\n", event); | |
1673 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1674 | dout("do_event_work completed %p\n", event); |
1675 | ceph_osdc_put_event(event); | |
1676 | kfree(event_work); | |
1677 | } | |
1678 | ||
1679 | ||
1680 | /* | |
1681 | * Process osd watch notifications | |
1682 | */ | |
3c663bbd AE |
1683 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1684 | struct ceph_msg *msg) | |
a40c4f10 YS |
1685 | { |
1686 | void *p, *end; | |
1687 | u8 proto_ver; | |
1688 | u64 cookie, ver, notify_id; | |
1689 | u8 opcode; | |
1690 | struct ceph_osd_event *event; | |
1691 | struct ceph_osd_event_work *event_work; | |
1692 | ||
1693 | p = msg->front.iov_base; | |
1694 | end = p + msg->front.iov_len; | |
1695 | ||
1696 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1697 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1698 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1699 | ceph_decode_64_safe(&p, end, ver, bad); | |
1700 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1701 | ||
1702 | spin_lock(&osdc->event_lock); | |
1703 | event = __find_event(osdc, cookie); | |
1704 | if (event) { | |
3c663bbd | 1705 | BUG_ON(event->one_shot); |
a40c4f10 | 1706 | get_event(event); |
a40c4f10 YS |
1707 | } |
1708 | spin_unlock(&osdc->event_lock); | |
1709 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1710 | cookie, ver, event); | |
1711 | if (event) { | |
1712 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1713 | if (!event_work) { |
1714 | dout("ERROR: could not allocate event_work\n"); | |
1715 | goto done_err; | |
1716 | } | |
6b0ae409 | 1717 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1718 | event_work->event = event; |
1719 | event_work->ver = ver; | |
1720 | event_work->notify_id = notify_id; | |
1721 | event_work->opcode = opcode; | |
1722 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1723 | dout("WARNING: failed to queue notify event work\n"); | |
1724 | goto done_err; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | return; | |
1729 | ||
1730 | done_err: | |
a40c4f10 YS |
1731 | ceph_osdc_put_event(event); |
1732 | return; | |
1733 | ||
1734 | bad: | |
1735 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1736 | return; | |
1737 | } | |
1738 | ||
f24e9980 SW |
1739 | /* |
1740 | * Register request, send initial attempt. | |
1741 | */ | |
1742 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1743 | struct ceph_osd_request *req, | |
1744 | bool nofail) | |
1745 | { | |
c1ea8823 | 1746 | int rc = 0; |
f24e9980 SW |
1747 | |
1748 | req->r_request->pages = req->r_pages; | |
d4b515fa | 1749 | req->r_request->page_count = req->r_num_pages; |
f51a822c | 1750 | req->r_request->page_alignment = req->r_page_alignment; |
68b4476b YS |
1751 | #ifdef CONFIG_BLOCK |
1752 | req->r_request->bio = req->r_bio; | |
1753 | #endif | |
c885837f | 1754 | req->r_request->trail = &req->r_trail; |
f24e9980 SW |
1755 | |
1756 | register_request(osdc, req); | |
1757 | ||
1758 | down_read(&osdc->map_sem); | |
1759 | mutex_lock(&osdc->request_mutex); | |
c1ea8823 SW |
1760 | /* |
1761 | * a racing kick_requests() may have sent the message for us | |
1762 | * while we dropped request_mutex above, so only send now if | |
1763 | * the request still han't been touched yet. | |
1764 | */ | |
1765 | if (req->r_sent == 0) { | |
38d6453c | 1766 | rc = __map_request(osdc, req, 0); |
9d6fcb08 SW |
1767 | if (rc < 0) { |
1768 | if (nofail) { | |
1769 | dout("osdc_start_request failed map, " | |
1770 | " will retry %lld\n", req->r_tid); | |
1771 | rc = 0; | |
1772 | } | |
234af26f | 1773 | goto out_unlock; |
9d6fcb08 | 1774 | } |
6f6c7006 SW |
1775 | if (req->r_osd == NULL) { |
1776 | dout("send_request %p no up osds in pg\n", req); | |
1777 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1778 | } else { | |
56e925b6 | 1779 | __send_request(osdc, req); |
f24e9980 | 1780 | } |
56e925b6 | 1781 | rc = 0; |
f24e9980 | 1782 | } |
234af26f DC |
1783 | |
1784 | out_unlock: | |
f24e9980 SW |
1785 | mutex_unlock(&osdc->request_mutex); |
1786 | up_read(&osdc->map_sem); | |
1787 | return rc; | |
1788 | } | |
3d14c5d2 | 1789 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
1790 | |
1791 | /* | |
1792 | * wait for a request to complete | |
1793 | */ | |
1794 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
1795 | struct ceph_osd_request *req) | |
1796 | { | |
1797 | int rc; | |
1798 | ||
1799 | rc = wait_for_completion_interruptible(&req->r_completion); | |
1800 | if (rc < 0) { | |
1801 | mutex_lock(&osdc->request_mutex); | |
1802 | __cancel_request(req); | |
529cfcc4 | 1803 | __unregister_request(osdc, req); |
f24e9980 | 1804 | mutex_unlock(&osdc->request_mutex); |
25845472 | 1805 | complete_request(req); |
529cfcc4 | 1806 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
1807 | return rc; |
1808 | } | |
1809 | ||
1810 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
1811 | return req->r_result; | |
1812 | } | |
3d14c5d2 | 1813 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
1814 | |
1815 | /* | |
1816 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
1817 | */ | |
1818 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
1819 | { | |
1820 | struct ceph_osd_request *req; | |
1821 | u64 last_tid, next_tid = 0; | |
1822 | ||
1823 | mutex_lock(&osdc->request_mutex); | |
1824 | last_tid = osdc->last_tid; | |
1825 | while (1) { | |
1826 | req = __lookup_request_ge(osdc, next_tid); | |
1827 | if (!req) | |
1828 | break; | |
1829 | if (req->r_tid > last_tid) | |
1830 | break; | |
1831 | ||
1832 | next_tid = req->r_tid + 1; | |
1833 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
1834 | continue; | |
1835 | ||
1836 | ceph_osdc_get_request(req); | |
1837 | mutex_unlock(&osdc->request_mutex); | |
1838 | dout("sync waiting on tid %llu (last is %llu)\n", | |
1839 | req->r_tid, last_tid); | |
1840 | wait_for_completion(&req->r_safe_completion); | |
1841 | mutex_lock(&osdc->request_mutex); | |
1842 | ceph_osdc_put_request(req); | |
1843 | } | |
1844 | mutex_unlock(&osdc->request_mutex); | |
1845 | dout("sync done (thru tid %llu)\n", last_tid); | |
1846 | } | |
3d14c5d2 | 1847 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
1848 | |
1849 | /* | |
1850 | * init, shutdown | |
1851 | */ | |
1852 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
1853 | { | |
1854 | int err; | |
1855 | ||
1856 | dout("init\n"); | |
1857 | osdc->client = client; | |
1858 | osdc->osdmap = NULL; | |
1859 | init_rwsem(&osdc->map_sem); | |
1860 | init_completion(&osdc->map_waiters); | |
1861 | osdc->last_requested_map = 0; | |
1862 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
1863 | osdc->last_tid = 0; |
1864 | osdc->osds = RB_ROOT; | |
f5a2041b | 1865 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 1866 | osdc->requests = RB_ROOT; |
422d2cb8 | 1867 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
1868 | INIT_LIST_HEAD(&osdc->req_unsent); |
1869 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 1870 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
1871 | osdc->num_requests = 0; |
1872 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 1873 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
1874 | spin_lock_init(&osdc->event_lock); |
1875 | osdc->event_tree = RB_ROOT; | |
1876 | osdc->event_count = 0; | |
f5a2041b YS |
1877 | |
1878 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 1879 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 1880 | |
5f44f142 | 1881 | err = -ENOMEM; |
f24e9980 SW |
1882 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
1883 | sizeof(struct ceph_osd_request)); | |
1884 | if (!osdc->req_mempool) | |
5f44f142 | 1885 | goto out; |
f24e9980 | 1886 | |
d50b409f SW |
1887 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
1888 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 1889 | "osd_op"); |
f24e9980 | 1890 | if (err < 0) |
5f44f142 | 1891 | goto out_mempool; |
d50b409f | 1892 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
1893 | OSD_OPREPLY_FRONT_LEN, 10, true, |
1894 | "osd_op_reply"); | |
c16e7869 SW |
1895 | if (err < 0) |
1896 | goto out_msgpool; | |
a40c4f10 YS |
1897 | |
1898 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
1899 | if (IS_ERR(osdc->notify_wq)) { | |
1900 | err = PTR_ERR(osdc->notify_wq); | |
1901 | osdc->notify_wq = NULL; | |
1902 | goto out_msgpool; | |
1903 | } | |
f24e9980 | 1904 | return 0; |
5f44f142 | 1905 | |
c16e7869 SW |
1906 | out_msgpool: |
1907 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
1908 | out_mempool: |
1909 | mempool_destroy(osdc->req_mempool); | |
1910 | out: | |
1911 | return err; | |
f24e9980 SW |
1912 | } |
1913 | ||
1914 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
1915 | { | |
a40c4f10 YS |
1916 | flush_workqueue(osdc->notify_wq); |
1917 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 1918 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 1919 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
1920 | if (osdc->osdmap) { |
1921 | ceph_osdmap_destroy(osdc->osdmap); | |
1922 | osdc->osdmap = NULL; | |
1923 | } | |
aca420bc | 1924 | remove_all_osds(osdc); |
f24e9980 SW |
1925 | mempool_destroy(osdc->req_mempool); |
1926 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 1927 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
1928 | } |
1929 | ||
1930 | /* | |
1931 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
1932 | * *plen. Return number of bytes read, or error. | |
1933 | */ | |
1934 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
1935 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
1936 | u64 off, u64 *plen, | |
1937 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 1938 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
1939 | { |
1940 | struct ceph_osd_request *req; | |
1941 | int rc = 0; | |
1942 | ||
1943 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
1944 | vino.snap, off, *plen); | |
1945 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, | |
1946 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, | |
1947 | NULL, 0, truncate_seq, truncate_size, NULL, | |
a3bea47e | 1948 | false, page_align); |
6816282d SW |
1949 | if (IS_ERR(req)) |
1950 | return PTR_ERR(req); | |
f24e9980 SW |
1951 | |
1952 | /* it may be a short read due to an object boundary */ | |
1953 | req->r_pages = pages; | |
f24e9980 | 1954 | |
b7495fc2 SW |
1955 | dout("readpages final extent is %llu~%llu (%d pages align %d)\n", |
1956 | off, *plen, req->r_num_pages, page_align); | |
f24e9980 SW |
1957 | |
1958 | rc = ceph_osdc_start_request(osdc, req, false); | |
1959 | if (!rc) | |
1960 | rc = ceph_osdc_wait_request(osdc, req); | |
1961 | ||
1962 | ceph_osdc_put_request(req); | |
1963 | dout("readpages result %d\n", rc); | |
1964 | return rc; | |
1965 | } | |
3d14c5d2 | 1966 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
1967 | |
1968 | /* | |
1969 | * do a synchronous write on N pages | |
1970 | */ | |
1971 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
1972 | struct ceph_file_layout *layout, | |
1973 | struct ceph_snap_context *snapc, | |
1974 | u64 off, u64 len, | |
1975 | u32 truncate_seq, u64 truncate_size, | |
1976 | struct timespec *mtime, | |
24808826 | 1977 | struct page **pages, int num_pages) |
f24e9980 SW |
1978 | { |
1979 | struct ceph_osd_request *req; | |
1980 | int rc = 0; | |
b7495fc2 | 1981 | int page_align = off & ~PAGE_MASK; |
f24e9980 SW |
1982 | |
1983 | BUG_ON(vino.snap != CEPH_NOSNAP); | |
1984 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, | |
1985 | CEPH_OSD_OP_WRITE, | |
24808826 | 1986 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
fbf8685f | 1987 | snapc, 0, |
f24e9980 | 1988 | truncate_seq, truncate_size, mtime, |
a3bea47e | 1989 | true, page_align); |
6816282d SW |
1990 | if (IS_ERR(req)) |
1991 | return PTR_ERR(req); | |
f24e9980 SW |
1992 | |
1993 | /* it may be a short write due to an object boundary */ | |
1994 | req->r_pages = pages; | |
f24e9980 SW |
1995 | dout("writepages %llu~%llu (%d pages)\n", off, len, |
1996 | req->r_num_pages); | |
1997 | ||
87f979d3 | 1998 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
1999 | if (!rc) |
2000 | rc = ceph_osdc_wait_request(osdc, req); | |
2001 | ||
2002 | ceph_osdc_put_request(req); | |
2003 | if (rc == 0) | |
2004 | rc = len; | |
2005 | dout("writepages result %d\n", rc); | |
2006 | return rc; | |
2007 | } | |
3d14c5d2 | 2008 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2009 | |
2010 | /* | |
2011 | * handle incoming message | |
2012 | */ | |
2013 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2014 | { | |
2015 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2016 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2017 | int type = le16_to_cpu(msg->hdr.type); |
2018 | ||
2019 | if (!osd) | |
4a32f93d | 2020 | goto out; |
32c895e7 | 2021 | osdc = osd->o_osdc; |
f24e9980 SW |
2022 | |
2023 | switch (type) { | |
2024 | case CEPH_MSG_OSD_MAP: | |
2025 | ceph_osdc_handle_map(osdc, msg); | |
2026 | break; | |
2027 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2028 | handle_reply(osdc, msg, con); |
f24e9980 | 2029 | break; |
a40c4f10 YS |
2030 | case CEPH_MSG_WATCH_NOTIFY: |
2031 | handle_watch_notify(osdc, msg); | |
2032 | break; | |
f24e9980 SW |
2033 | |
2034 | default: | |
2035 | pr_err("received unknown message type %d %s\n", type, | |
2036 | ceph_msg_type_name(type)); | |
2037 | } | |
4a32f93d | 2038 | out: |
f24e9980 SW |
2039 | ceph_msg_put(msg); |
2040 | } | |
2041 | ||
5b3a4db3 | 2042 | /* |
21b667f6 SW |
2043 | * lookup and return message for incoming reply. set up reply message |
2044 | * pages. | |
5b3a4db3 SW |
2045 | */ |
2046 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2047 | struct ceph_msg_header *hdr, |
2048 | int *skip) | |
f24e9980 SW |
2049 | { |
2050 | struct ceph_osd *osd = con->private; | |
2051 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2052 | struct ceph_msg *m; |
0547a9b3 | 2053 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2054 | int front = le32_to_cpu(hdr->front_len); |
2055 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2056 | u64 tid; |
f24e9980 | 2057 | |
0547a9b3 YS |
2058 | tid = le64_to_cpu(hdr->tid); |
2059 | mutex_lock(&osdc->request_mutex); | |
2060 | req = __lookup_request(osdc, tid); | |
2061 | if (!req) { | |
2062 | *skip = 1; | |
2063 | m = NULL; | |
756a16a5 SW |
2064 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2065 | osd->o_osd); | |
0547a9b3 YS |
2066 | goto out; |
2067 | } | |
c16e7869 SW |
2068 | |
2069 | if (req->r_con_filling_msg) { | |
8921d114 | 2070 | dout("%s revoking msg %p from old con %p\n", __func__, |
c16e7869 | 2071 | req->r_reply, req->r_con_filling_msg); |
8921d114 | 2072 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 2073 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
6f46cb29 | 2074 | req->r_con_filling_msg = NULL; |
0547a9b3 YS |
2075 | } |
2076 | ||
c16e7869 SW |
2077 | if (front > req->r_reply->front.iov_len) { |
2078 | pr_warning("get_reply front %d > preallocated %d\n", | |
2079 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2080 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2081 | if (!m) |
c16e7869 SW |
2082 | goto out; |
2083 | ceph_msg_put(req->r_reply); | |
2084 | req->r_reply = m; | |
2085 | } | |
2086 | m = ceph_msg_get(req->r_reply); | |
2087 | ||
0547a9b3 | 2088 | if (data_len > 0) { |
b7495fc2 | 2089 | int want = calc_pages_for(req->r_page_alignment, data_len); |
21b667f6 | 2090 | |
9cbb1d72 | 2091 | if (req->r_pages && unlikely(req->r_num_pages < want)) { |
9bb0ce2b SW |
2092 | pr_warning("tid %lld reply has %d bytes %d pages, we" |
2093 | " had only %d pages ready\n", tid, data_len, | |
2094 | want, req->r_num_pages); | |
0547a9b3 YS |
2095 | *skip = 1; |
2096 | ceph_msg_put(m); | |
a79832f2 | 2097 | m = NULL; |
21b667f6 | 2098 | goto out; |
0547a9b3 | 2099 | } |
21b667f6 | 2100 | m->pages = req->r_pages; |
d4b515fa | 2101 | m->page_count = req->r_num_pages; |
c5c6b19d | 2102 | m->page_alignment = req->r_page_alignment; |
68b4476b YS |
2103 | #ifdef CONFIG_BLOCK |
2104 | m->bio = req->r_bio; | |
2105 | #endif | |
0547a9b3 | 2106 | } |
5b3a4db3 | 2107 | *skip = 0; |
0d47766f | 2108 | req->r_con_filling_msg = con->ops->get(con); |
c16e7869 | 2109 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2110 | |
2111 | out: | |
2112 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2113 | return m; |
5b3a4db3 SW |
2114 | |
2115 | } | |
2116 | ||
2117 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2118 | struct ceph_msg_header *hdr, | |
2119 | int *skip) | |
2120 | { | |
2121 | struct ceph_osd *osd = con->private; | |
2122 | int type = le16_to_cpu(hdr->type); | |
2123 | int front = le32_to_cpu(hdr->front_len); | |
2124 | ||
1c20f2d2 | 2125 | *skip = 0; |
5b3a4db3 SW |
2126 | switch (type) { |
2127 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2128 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2129 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2130 | case CEPH_MSG_OSD_OPREPLY: |
2131 | return get_reply(con, hdr, skip); | |
2132 | default: | |
2133 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2134 | osd->o_osd); | |
2135 | *skip = 1; | |
2136 | return NULL; | |
2137 | } | |
f24e9980 SW |
2138 | } |
2139 | ||
2140 | /* | |
2141 | * Wrappers to refcount containing ceph_osd struct | |
2142 | */ | |
2143 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2144 | { | |
2145 | struct ceph_osd *osd = con->private; | |
2146 | if (get_osd(osd)) | |
2147 | return con; | |
2148 | return NULL; | |
2149 | } | |
2150 | ||
2151 | static void put_osd_con(struct ceph_connection *con) | |
2152 | { | |
2153 | struct ceph_osd *osd = con->private; | |
2154 | put_osd(osd); | |
2155 | } | |
2156 | ||
4e7a5dcd SW |
2157 | /* |
2158 | * authentication | |
2159 | */ | |
a3530df3 AE |
2160 | /* |
2161 | * Note: returned pointer is the address of a structure that's | |
2162 | * managed separately. Caller must *not* attempt to free it. | |
2163 | */ | |
2164 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2165 | int *proto, int force_new) |
4e7a5dcd SW |
2166 | { |
2167 | struct ceph_osd *o = con->private; | |
2168 | struct ceph_osd_client *osdc = o->o_osdc; | |
2169 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2170 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2171 | |
74f1869f | 2172 | if (force_new && auth->authorizer) { |
a255651d AE |
2173 | if (ac->ops && ac->ops->destroy_authorizer) |
2174 | ac->ops->destroy_authorizer(ac, auth->authorizer); | |
74f1869f AE |
2175 | auth->authorizer = NULL; |
2176 | } | |
a255651d | 2177 | if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { |
a3530df3 AE |
2178 | int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, |
2179 | auth); | |
4e7a5dcd | 2180 | if (ret) |
a3530df3 | 2181 | return ERR_PTR(ret); |
4e7a5dcd | 2182 | } |
4e7a5dcd | 2183 | *proto = ac->protocol; |
74f1869f | 2184 | |
a3530df3 | 2185 | return auth; |
4e7a5dcd SW |
2186 | } |
2187 | ||
2188 | ||
2189 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2190 | { | |
2191 | struct ceph_osd *o = con->private; | |
2192 | struct ceph_osd_client *osdc = o->o_osdc; | |
2193 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2194 | ||
a255651d AE |
2195 | /* |
2196 | * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, | |
2197 | * XXX which do we do: succeed or fail? | |
2198 | */ | |
6c4a1915 | 2199 | return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2200 | } |
2201 | ||
9bd2e6f8 SW |
2202 | static int invalidate_authorizer(struct ceph_connection *con) |
2203 | { | |
2204 | struct ceph_osd *o = con->private; | |
2205 | struct ceph_osd_client *osdc = o->o_osdc; | |
2206 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2207 | ||
a255651d | 2208 | if (ac->ops && ac->ops->invalidate_authorizer) |
9bd2e6f8 SW |
2209 | ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
2210 | ||
2211 | return ceph_monc_validate_auth(&osdc->client->monc); | |
2212 | } | |
4e7a5dcd | 2213 | |
9e32789f | 2214 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2215 | .get = get_osd_con, |
2216 | .put = put_osd_con, | |
2217 | .dispatch = dispatch, | |
4e7a5dcd SW |
2218 | .get_authorizer = get_authorizer, |
2219 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2220 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2221 | .alloc_msg = alloc_msg, |
81b024e7 | 2222 | .fault = osd_reset, |
f24e9980 | 2223 | }; |