Commit | Line | Data |
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f24e9980 SW |
1 | #ifndef _FS_CEPH_OSDMAP_H |
2 | #define _FS_CEPH_OSDMAP_H | |
3 | ||
4 | #include <linux/rbtree.h> | |
a1ce3928 | 5 | #include <linux/ceph/types.h> |
ef4859d6 | 6 | #include <linux/ceph/decode.h> |
a1ce3928 | 7 | #include <linux/ceph/ceph_fs.h> |
3d14c5d2 | 8 | #include <linux/crush/crush.h> |
f24e9980 SW |
9 | |
10 | /* | |
11 | * The osd map describes the current membership of the osd cluster and | |
12 | * specifies the mapping of objects to placement groups and placement | |
13 | * groups to (sets of) osds. That is, it completely specifies the | |
14 | * (desired) distribution of all data objects in the system at some | |
15 | * point in time. | |
16 | * | |
17 | * Each map version is identified by an epoch, which increases monotonically. | |
18 | * | |
19 | * The map can be updated either via an incremental map (diff) describing | |
20 | * the change between two successive epochs, or as a fully encoded map. | |
21 | */ | |
5b191d99 SW |
22 | struct ceph_pg { |
23 | uint64_t pool; | |
24 | uint32_t seed; | |
25 | }; | |
26 | ||
f984cb76 ID |
27 | int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs); |
28 | ||
04812acf ID |
29 | #define CEPH_POOL_FLAG_HASHPSPOOL (1ULL << 0) /* hash pg seed and pool id |
30 | together */ | |
63244fa1 | 31 | #define CEPH_POOL_FLAG_FULL (1ULL << 1) /* pool is full */ |
83ca14fd | 32 | |
f24e9980 | 33 | struct ceph_pg_pool_info { |
4fc51be8 | 34 | struct rb_node node; |
4f6a7e5e | 35 | s64 id; |
04812acf | 36 | u8 type; /* CEPH_POOL_TYPE_* */ |
4f6a7e5e | 37 | u8 size; |
04812acf | 38 | u8 min_size; |
4f6a7e5e SW |
39 | u8 crush_ruleset; |
40 | u8 object_hash; | |
04812acf | 41 | u32 last_force_request_resend; |
4f6a7e5e SW |
42 | u32 pg_num, pgp_num; |
43 | int pg_num_mask, pgp_num_mask; | |
17a13e40 ID |
44 | s64 read_tier; |
45 | s64 write_tier; /* wins for read+write ops */ | |
04812acf | 46 | u64 flags; /* CEPH_POOL_FLAG_* */ |
2844a76a | 47 | char *name; |
42c1b124 ID |
48 | |
49 | bool was_full; /* for handle_one_map() */ | |
f24e9980 SW |
50 | }; |
51 | ||
2abebdbc ID |
52 | static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool) |
53 | { | |
54 | switch (pool->type) { | |
55 | case CEPH_POOL_TYPE_REP: | |
56 | return true; | |
57 | case CEPH_POOL_TYPE_EC: | |
58 | return false; | |
59 | default: | |
60 | BUG_ON(1); | |
61 | } | |
62 | } | |
63 | ||
4f6a7e5e | 64 | struct ceph_object_locator { |
22116525 | 65 | s64 pool; |
30c156d9 | 66 | struct ceph_string *pool_ns; |
4f6a7e5e SW |
67 | }; |
68 | ||
63244fa1 ID |
69 | static inline void ceph_oloc_init(struct ceph_object_locator *oloc) |
70 | { | |
71 | oloc->pool = -1; | |
30c156d9 | 72 | oloc->pool_ns = NULL; |
63244fa1 ID |
73 | } |
74 | ||
75 | static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc) | |
76 | { | |
77 | return oloc->pool == -1; | |
78 | } | |
79 | ||
30c156d9 YZ |
80 | void ceph_oloc_copy(struct ceph_object_locator *dest, |
81 | const struct ceph_object_locator *src); | |
82 | void ceph_oloc_destroy(struct ceph_object_locator *oloc); | |
63244fa1 | 83 | |
4295f221 ID |
84 | /* |
85 | * Maximum supported by kernel client object name length | |
86 | * | |
87 | * (probably outdated: must be >= RBD_MAX_MD_NAME_LEN -- currently 100) | |
88 | */ | |
89 | #define CEPH_MAX_OID_NAME_LEN 100 | |
90 | ||
d30291b9 ID |
91 | /* |
92 | * 51-char inline_name is long enough for all cephfs and all but one | |
93 | * rbd requests: <imgname> in "<imgname>.rbd"/"rbd_id.<imgname>" can be | |
94 | * arbitrarily long (~PAGE_SIZE). It's done once during rbd map; all | |
95 | * other rbd requests fit into inline_name. | |
96 | * | |
97 | * Makes ceph_object_id 64 bytes on 64-bit. | |
98 | */ | |
99 | #define CEPH_OID_INLINE_LEN 52 | |
100 | ||
101 | /* | |
102 | * Both inline and external buffers have space for a NUL-terminator, | |
103 | * which is carried around. It's not required though - RADOS object | |
104 | * names don't have to be NUL-terminated and may contain NULs. | |
105 | */ | |
4295f221 | 106 | struct ceph_object_id { |
d30291b9 ID |
107 | char *name; |
108 | char inline_name[CEPH_OID_INLINE_LEN]; | |
4295f221 ID |
109 | int name_len; |
110 | }; | |
111 | ||
d30291b9 ID |
112 | static inline void ceph_oid_init(struct ceph_object_id *oid) |
113 | { | |
114 | oid->name = oid->inline_name; | |
115 | oid->name_len = 0; | |
116 | } | |
117 | ||
281dbe5d ID |
118 | #define CEPH_OID_INIT_ONSTACK(oid) \ |
119 | ({ ceph_oid_init(&oid); oid; }) | |
120 | #define CEPH_DEFINE_OID_ONSTACK(oid) \ | |
121 | struct ceph_object_id oid = CEPH_OID_INIT_ONSTACK(oid) | |
122 | ||
d30291b9 ID |
123 | static inline bool ceph_oid_empty(const struct ceph_object_id *oid) |
124 | { | |
125 | return oid->name == oid->inline_name && !oid->name_len; | |
126 | } | |
127 | ||
128 | void ceph_oid_copy(struct ceph_object_id *dest, | |
129 | const struct ceph_object_id *src); | |
130 | __printf(2, 3) | |
131 | void ceph_oid_printf(struct ceph_object_id *oid, const char *fmt, ...); | |
132 | __printf(3, 4) | |
133 | int ceph_oid_aprintf(struct ceph_object_id *oid, gfp_t gfp, | |
134 | const char *fmt, ...); | |
135 | void ceph_oid_destroy(struct ceph_object_id *oid); | |
136 | ||
f24e9980 SW |
137 | struct ceph_pg_mapping { |
138 | struct rb_node node; | |
5b191d99 | 139 | struct ceph_pg pgid; |
35a935d7 ID |
140 | |
141 | union { | |
142 | struct { | |
143 | int len; | |
144 | int osds[]; | |
145 | } pg_temp; | |
9686f94c ID |
146 | struct { |
147 | int osd; | |
148 | } primary_temp; | |
35a935d7 | 149 | }; |
f24e9980 SW |
150 | }; |
151 | ||
152 | struct ceph_osdmap { | |
153 | struct ceph_fsid fsid; | |
154 | u32 epoch; | |
f24e9980 SW |
155 | struct ceph_timespec created, modified; |
156 | ||
157 | u32 flags; /* CEPH_OSDMAP_* */ | |
158 | ||
159 | u32 max_osd; /* size of osd_state, _offload, _addr arrays */ | |
160 | u8 *osd_state; /* CEPH_OSD_* */ | |
161 | u32 *osd_weight; /* 0 = failed, 0x10000 = 100% normal */ | |
162 | struct ceph_entity_addr *osd_addr; | |
163 | ||
164 | struct rb_root pg_temp; | |
9686f94c ID |
165 | struct rb_root primary_temp; |
166 | ||
2cfa34f2 ID |
167 | u32 *osd_primary_affinity; |
168 | ||
4fc51be8 SW |
169 | struct rb_root pg_pools; |
170 | u32 pool_max; | |
f24e9980 SW |
171 | |
172 | /* the CRUSH map specifies the mapping of placement groups to | |
173 | * the list of osds that store+replicate them. */ | |
174 | struct crush_map *crush; | |
9d521470 ID |
175 | |
176 | struct mutex crush_scratch_mutex; | |
177 | int crush_scratch_ary[CEPH_PG_MAX_SIZE * 3]; | |
f24e9980 SW |
178 | }; |
179 | ||
3b33f692 | 180 | static inline bool ceph_osd_exists(struct ceph_osdmap *map, int osd) |
246138fa ID |
181 | { |
182 | return osd >= 0 && osd < map->max_osd && | |
183 | (map->osd_state[osd] & CEPH_OSD_EXISTS); | |
184 | } | |
185 | ||
3b33f692 | 186 | static inline bool ceph_osd_is_up(struct ceph_osdmap *map, int osd) |
f24e9980 | 187 | { |
246138fa ID |
188 | return ceph_osd_exists(map, osd) && |
189 | (map->osd_state[osd] & CEPH_OSD_UP); | |
190 | } | |
191 | ||
3b33f692 | 192 | static inline bool ceph_osd_is_down(struct ceph_osdmap *map, int osd) |
246138fa ID |
193 | { |
194 | return !ceph_osd_is_up(map, osd); | |
f24e9980 SW |
195 | } |
196 | ||
f24e9980 | 197 | extern char *ceph_osdmap_state_str(char *str, int len, int state); |
2cfa34f2 | 198 | extern u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd); |
f24e9980 SW |
199 | |
200 | static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map, | |
201 | int osd) | |
202 | { | |
203 | if (osd >= map->max_osd) | |
204 | return NULL; | |
205 | return &map->osd_addr[osd]; | |
206 | } | |
207 | ||
ef4859d6 AE |
208 | static inline int ceph_decode_pgid(void **p, void *end, struct ceph_pg *pgid) |
209 | { | |
210 | __u8 version; | |
211 | ||
212 | if (!ceph_has_room(p, end, 1 + 8 + 4 + 4)) { | |
3ef650d3 | 213 | pr_warn("incomplete pg encoding\n"); |
ef4859d6 AE |
214 | return -EINVAL; |
215 | } | |
216 | version = ceph_decode_8(p); | |
217 | if (version > 1) { | |
3ef650d3 | 218 | pr_warn("do not understand pg encoding %d > 1\n", |
ef4859d6 AE |
219 | (int)version); |
220 | return -EINVAL; | |
221 | } | |
222 | ||
223 | pgid->pool = ceph_decode_64(p); | |
224 | pgid->seed = ceph_decode_32(p); | |
225 | *p += 4; /* skip deprecated preferred value */ | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
e5253a7b | 230 | struct ceph_osdmap *ceph_osdmap_alloc(void); |
a2505d63 | 231 | extern struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end); |
0c0a8de1 ID |
232 | struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, |
233 | struct ceph_osdmap *map); | |
f24e9980 SW |
234 | extern void ceph_osdmap_destroy(struct ceph_osdmap *map); |
235 | ||
6f3bfd45 ID |
236 | struct ceph_osds { |
237 | int osds[CEPH_PG_MAX_SIZE]; | |
238 | int size; | |
239 | int primary; /* id, NOT index */ | |
240 | }; | |
241 | ||
242 | static inline void ceph_osds_init(struct ceph_osds *set) | |
243 | { | |
244 | set->size = 0; | |
245 | set->primary = -1; | |
246 | } | |
247 | ||
248 | void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src); | |
249 | ||
63244fa1 ID |
250 | bool ceph_is_new_interval(const struct ceph_osds *old_acting, |
251 | const struct ceph_osds *new_acting, | |
252 | const struct ceph_osds *old_up, | |
253 | const struct ceph_osds *new_up, | |
254 | int old_size, | |
255 | int new_size, | |
256 | int old_min_size, | |
257 | int new_min_size, | |
258 | u32 old_pg_num, | |
259 | u32 new_pg_num, | |
260 | bool old_sort_bitwise, | |
261 | bool new_sort_bitwise, | |
262 | const struct ceph_pg *pgid); | |
263 | bool ceph_osds_changed(const struct ceph_osds *old_acting, | |
264 | const struct ceph_osds *new_acting, | |
265 | bool any_change); | |
266 | ||
f24e9980 | 267 | /* calculate mapping of a file extent to an object */ |
d63b77f4 | 268 | extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, |
e8afad65 | 269 | u64 off, u64 len, |
d63b77f4 | 270 | u64 *bno, u64 *oxoff, u64 *oxlen); |
f24e9980 | 271 | |
d9591f5e ID |
272 | int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap, |
273 | struct ceph_object_id *oid, | |
274 | struct ceph_object_locator *oloc, | |
275 | struct ceph_pg *raw_pgid); | |
7c13cb64 | 276 | |
6f3bfd45 ID |
277 | void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, |
278 | const struct ceph_pg *raw_pgid, | |
279 | struct ceph_osds *up, | |
280 | struct ceph_osds *acting); | |
f81f1633 ID |
281 | int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap, |
282 | const struct ceph_pg *raw_pgid); | |
f24e9980 | 283 | |
ce7f6a27 ID |
284 | extern struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map, |
285 | u64 id); | |
286 | ||
72afc71f | 287 | extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id); |
7669a2c9 YS |
288 | extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name); |
289 | ||
f24e9980 | 290 | #endif |