Commit | Line | Data |
---|---|---|
f24e9980 SW |
1 | #ifndef _FS_CEPH_OSDMAP_H |
2 | #define _FS_CEPH_OSDMAP_H | |
3 | ||
4 | #include <linux/rbtree.h> | |
5 | #include "types.h" | |
6 | #include "ceph_fs.h" | |
7 | #include "crush/crush.h" | |
8 | ||
9 | /* | |
10 | * The osd map describes the current membership of the osd cluster and | |
11 | * specifies the mapping of objects to placement groups and placement | |
12 | * groups to (sets of) osds. That is, it completely specifies the | |
13 | * (desired) distribution of all data objects in the system at some | |
14 | * point in time. | |
15 | * | |
16 | * Each map version is identified by an epoch, which increases monotonically. | |
17 | * | |
18 | * The map can be updated either via an incremental map (diff) describing | |
19 | * the change between two successive epochs, or as a fully encoded map. | |
20 | */ | |
21 | struct ceph_pg_pool_info { | |
4fc51be8 SW |
22 | struct rb_node node; |
23 | int id; | |
f24e9980 SW |
24 | struct ceph_pg_pool v; |
25 | int pg_num_mask, pgp_num_mask, lpg_num_mask, lpgp_num_mask; | |
26 | }; | |
27 | ||
28 | struct ceph_pg_mapping { | |
29 | struct rb_node node; | |
51042122 | 30 | struct ceph_pg pgid; |
f24e9980 SW |
31 | int len; |
32 | int osds[]; | |
33 | }; | |
34 | ||
35 | struct ceph_osdmap { | |
36 | struct ceph_fsid fsid; | |
37 | u32 epoch; | |
38 | u32 mkfs_epoch; | |
39 | struct ceph_timespec created, modified; | |
40 | ||
41 | u32 flags; /* CEPH_OSDMAP_* */ | |
42 | ||
43 | u32 max_osd; /* size of osd_state, _offload, _addr arrays */ | |
44 | u8 *osd_state; /* CEPH_OSD_* */ | |
45 | u32 *osd_weight; /* 0 = failed, 0x10000 = 100% normal */ | |
46 | struct ceph_entity_addr *osd_addr; | |
47 | ||
48 | struct rb_root pg_temp; | |
4fc51be8 SW |
49 | struct rb_root pg_pools; |
50 | u32 pool_max; | |
f24e9980 SW |
51 | |
52 | /* the CRUSH map specifies the mapping of placement groups to | |
53 | * the list of osds that store+replicate them. */ | |
54 | struct crush_map *crush; | |
55 | }; | |
56 | ||
57 | /* | |
58 | * file layout helpers | |
59 | */ | |
60 | #define ceph_file_layout_su(l) ((__s32)le32_to_cpu((l).fl_stripe_unit)) | |
61 | #define ceph_file_layout_stripe_count(l) \ | |
62 | ((__s32)le32_to_cpu((l).fl_stripe_count)) | |
63 | #define ceph_file_layout_object_size(l) ((__s32)le32_to_cpu((l).fl_object_size)) | |
64 | #define ceph_file_layout_cas_hash(l) ((__s32)le32_to_cpu((l).fl_cas_hash)) | |
65 | #define ceph_file_layout_object_su(l) \ | |
66 | ((__s32)le32_to_cpu((l).fl_object_stripe_unit)) | |
67 | #define ceph_file_layout_pg_preferred(l) \ | |
68 | ((__s32)le32_to_cpu((l).fl_pg_preferred)) | |
69 | #define ceph_file_layout_pg_pool(l) \ | |
70 | ((__s32)le32_to_cpu((l).fl_pg_pool)) | |
71 | ||
72 | static inline unsigned ceph_file_layout_stripe_width(struct ceph_file_layout *l) | |
73 | { | |
74 | return le32_to_cpu(l->fl_stripe_unit) * | |
75 | le32_to_cpu(l->fl_stripe_count); | |
76 | } | |
77 | ||
78 | /* "period" == bytes before i start on a new set of objects */ | |
79 | static inline unsigned ceph_file_layout_period(struct ceph_file_layout *l) | |
80 | { | |
81 | return le32_to_cpu(l->fl_object_size) * | |
82 | le32_to_cpu(l->fl_stripe_count); | |
83 | } | |
84 | ||
85 | ||
86 | static inline int ceph_osd_is_up(struct ceph_osdmap *map, int osd) | |
87 | { | |
88 | return (osd < map->max_osd) && (map->osd_state[osd] & CEPH_OSD_UP); | |
89 | } | |
90 | ||
91 | static inline bool ceph_osdmap_flag(struct ceph_osdmap *map, int flag) | |
92 | { | |
93 | return map && (map->flags & flag); | |
94 | } | |
95 | ||
96 | extern char *ceph_osdmap_state_str(char *str, int len, int state); | |
97 | ||
98 | static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map, | |
99 | int osd) | |
100 | { | |
101 | if (osd >= map->max_osd) | |
102 | return NULL; | |
103 | return &map->osd_addr[osd]; | |
104 | } | |
105 | ||
106 | extern struct ceph_osdmap *osdmap_decode(void **p, void *end); | |
107 | extern struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, | |
108 | struct ceph_osdmap *map, | |
109 | struct ceph_messenger *msgr); | |
110 | extern void ceph_osdmap_destroy(struct ceph_osdmap *map); | |
111 | ||
112 | /* calculate mapping of a file extent to an object */ | |
113 | extern void ceph_calc_file_object_mapping(struct ceph_file_layout *layout, | |
114 | u64 off, u64 *plen, | |
115 | u64 *bno, u64 *oxoff, u64 *oxlen); | |
116 | ||
117 | /* calculate mapping of object to a placement group */ | |
118 | extern int ceph_calc_object_layout(struct ceph_object_layout *ol, | |
119 | const char *oid, | |
120 | struct ceph_file_layout *fl, | |
121 | struct ceph_osdmap *osdmap); | |
51042122 SW |
122 | extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, |
123 | struct ceph_pg pgid); | |
f24e9980 SW |
124 | |
125 | #endif |