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 SW |
34 | |
35 | /* | |
36 | * Implement client access to distributed object storage cluster. | |
37 | * | |
38 | * All data objects are stored within a cluster/cloud of OSDs, or | |
39 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
40 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
41 | * remote daemons serving up and coordinating consistent and safe | |
42 | * access to storage. | |
43 | * | |
44 | * Cluster membership and the mapping of data objects onto storage devices | |
45 | * are described by the osd map. | |
46 | * | |
47 | * We keep track of pending OSD requests (read, write), resubmit | |
48 | * requests to different OSDs when the cluster topology/data layout | |
49 | * change, or retry the affected requests when the communications | |
50 | * channel with an OSD is reset. | |
51 | */ | |
52 | ||
53 | /* | |
54 | * calculate the mapping of a file extent onto an object, and fill out the | |
55 | * request accordingly. shorten extent as necessary if it crosses an | |
56 | * object boundary. | |
57 | * | |
58 | * fill osd op in request message. | |
59 | */ | |
dbe0fc41 | 60 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 61 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 62 | { |
60e56f13 | 63 | u64 orig_len = *plen; |
d63b77f4 | 64 | int r; |
f24e9980 | 65 | |
60e56f13 | 66 | /* object extent? */ |
75d1c941 AE |
67 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
68 | objoff, objlen); | |
d63b77f4 SW |
69 | if (r < 0) |
70 | return r; | |
75d1c941 AE |
71 | if (*objlen < orig_len) { |
72 | *plen = *objlen; | |
60e56f13 AE |
73 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
74 | orig_len - *plen, off, *plen); | |
75 | } | |
76 | ||
75d1c941 | 77 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 78 | |
3ff5f385 | 79 | return 0; |
f24e9980 SW |
80 | } |
81 | ||
f24e9980 SW |
82 | /* |
83 | * requests | |
84 | */ | |
415e49a9 | 85 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 86 | { |
e0c59487 | 87 | int num_pages; |
415e49a9 SW |
88 | struct ceph_osd_request *req = container_of(kref, |
89 | struct ceph_osd_request, | |
90 | r_kref); | |
91 | ||
92 | if (req->r_request) | |
93 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 94 | if (req->r_reply) { |
8921d114 | 95 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 96 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 97 | } |
0fff87ec AE |
98 | |
99 | if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && | |
e0c59487 AE |
100 | req->r_data_in.own_pages) { |
101 | num_pages = calc_pages_for((u64)req->r_data_in.alignment, | |
102 | (u64)req->r_data_in.length); | |
103 | ceph_release_page_vector(req->r_data_in.pages, num_pages); | |
104 | } | |
0fff87ec | 105 | if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && |
e0c59487 AE |
106 | req->r_data_out.own_pages) { |
107 | num_pages = calc_pages_for((u64)req->r_data_out.alignment, | |
108 | (u64)req->r_data_out.length); | |
109 | ceph_release_page_vector(req->r_data_out.pages, num_pages); | |
110 | } | |
0fff87ec | 111 | |
415e49a9 SW |
112 | ceph_put_snap_context(req->r_snapc); |
113 | if (req->r_mempool) | |
114 | mempool_free(req, req->r_osdc->req_mempool); | |
115 | else | |
116 | kfree(req); | |
f24e9980 | 117 | } |
3d14c5d2 | 118 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 119 | |
3499e8a5 | 120 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 121 | struct ceph_snap_context *snapc, |
1b83bef2 | 122 | unsigned int num_ops, |
3499e8a5 | 123 | bool use_mempool, |
54a54007 | 124 | gfp_t gfp_flags) |
f24e9980 SW |
125 | { |
126 | struct ceph_osd_request *req; | |
127 | struct ceph_msg *msg; | |
1b83bef2 SW |
128 | size_t msg_size; |
129 | ||
130 | msg_size = 4 + 4 + 8 + 8 + 4+8; | |
131 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
132 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
133 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
134 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
135 | msg_size += 8; /* snapid */ | |
136 | msg_size += 8; /* snap_seq */ | |
137 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
138 | msg_size += 4; | |
f24e9980 SW |
139 | |
140 | if (use_mempool) { | |
3499e8a5 | 141 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
142 | memset(req, 0, sizeof(*req)); |
143 | } else { | |
3499e8a5 | 144 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
145 | } |
146 | if (req == NULL) | |
a79832f2 | 147 | return NULL; |
f24e9980 | 148 | |
f24e9980 SW |
149 | req->r_osdc = osdc; |
150 | req->r_mempool = use_mempool; | |
68b4476b | 151 | |
415e49a9 | 152 | kref_init(&req->r_kref); |
f24e9980 SW |
153 | init_completion(&req->r_completion); |
154 | init_completion(&req->r_safe_completion); | |
a978fa20 | 155 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 156 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
157 | INIT_LIST_HEAD(&req->r_linger_item); |
158 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 159 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
160 | INIT_LIST_HEAD(&req->r_osd_item); |
161 | ||
c16e7869 SW |
162 | /* create reply message */ |
163 | if (use_mempool) | |
164 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
165 | else | |
166 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 167 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 168 | if (!msg) { |
c16e7869 | 169 | ceph_osdc_put_request(req); |
a79832f2 | 170 | return NULL; |
c16e7869 SW |
171 | } |
172 | req->r_reply = msg; | |
173 | ||
0fff87ec AE |
174 | req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; |
175 | req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; | |
d50b409f | 176 | |
c16e7869 | 177 | /* create request message; allow space for oid */ |
f24e9980 | 178 | if (use_mempool) |
8f3bc053 | 179 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 180 | else |
b61c2763 | 181 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 182 | if (!msg) { |
f24e9980 | 183 | ceph_osdc_put_request(req); |
a79832f2 | 184 | return NULL; |
f24e9980 | 185 | } |
68b4476b | 186 | |
f24e9980 | 187 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
188 | |
189 | req->r_request = msg; | |
3499e8a5 YS |
190 | |
191 | return req; | |
192 | } | |
3d14c5d2 | 193 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 194 | |
a8dd0a37 | 195 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 196 | { |
a8dd0a37 | 197 | switch (opcode) { |
68b4476b | 198 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 199 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
200 | case CEPH_OSD_OP_MAPEXT: |
201 | case CEPH_OSD_OP_MASKTRUNC: | |
202 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 203 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 204 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 205 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 206 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
207 | case CEPH_OSD_OP_WRITEFULL: |
208 | case CEPH_OSD_OP_TRUNCATE: | |
209 | case CEPH_OSD_OP_ZERO: | |
210 | case CEPH_OSD_OP_DELETE: | |
211 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 212 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
213 | case CEPH_OSD_OP_SETTRUNC: |
214 | case CEPH_OSD_OP_TRIMTRUNC: | |
215 | case CEPH_OSD_OP_TMAPUP: | |
216 | case CEPH_OSD_OP_TMAPPUT: | |
217 | case CEPH_OSD_OP_TMAPGET: | |
218 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 219 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 220 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
221 | case CEPH_OSD_OP_OMAPGETKEYS: |
222 | case CEPH_OSD_OP_OMAPGETVALS: | |
223 | case CEPH_OSD_OP_OMAPGETHEADER: | |
224 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
225 | case CEPH_OSD_OP_OMAPSETVALS: |
226 | case CEPH_OSD_OP_OMAPSETHEADER: | |
227 | case CEPH_OSD_OP_OMAPCLEAR: | |
228 | case CEPH_OSD_OP_OMAPRMKEYS: | |
229 | case CEPH_OSD_OP_OMAP_CMP: | |
230 | case CEPH_OSD_OP_CLONERANGE: | |
231 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
232 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 233 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 234 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
235 | case CEPH_OSD_OP_CMPXATTR: |
236 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
237 | case CEPH_OSD_OP_SETXATTRS: |
238 | case CEPH_OSD_OP_RESETXATTRS: | |
239 | case CEPH_OSD_OP_RMXATTR: | |
240 | case CEPH_OSD_OP_PULL: | |
241 | case CEPH_OSD_OP_PUSH: | |
242 | case CEPH_OSD_OP_BALANCEREADS: | |
243 | case CEPH_OSD_OP_UNBALANCEREADS: | |
244 | case CEPH_OSD_OP_SCRUB: | |
245 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
246 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
247 | case CEPH_OSD_OP_SCRUB_STOP: | |
248 | case CEPH_OSD_OP_SCRUB_MAP: | |
249 | case CEPH_OSD_OP_WRLOCK: | |
250 | case CEPH_OSD_OP_WRUNLOCK: | |
251 | case CEPH_OSD_OP_RDLOCK: | |
252 | case CEPH_OSD_OP_RDUNLOCK: | |
253 | case CEPH_OSD_OP_UPLOCK: | |
254 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 255 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
256 | case CEPH_OSD_OP_PGLS: |
257 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
258 | return true; |
259 | default: | |
260 | return false; | |
261 | } | |
262 | } | |
263 | ||
33803f33 AE |
264 | /* |
265 | * This is an osd op init function for opcodes that have no data or | |
266 | * other information associated with them. It also serves as a | |
267 | * common init routine for all the other init functions, below. | |
268 | */ | |
269 | void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) | |
270 | { | |
271 | BUG_ON(!osd_req_opcode_valid(opcode)); | |
272 | ||
273 | memset(op, 0, sizeof (*op)); | |
274 | ||
275 | op->op = opcode; | |
276 | } | |
277 | ||
278 | void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, | |
279 | u64 offset, u64 length, | |
280 | u64 truncate_size, u32 truncate_seq) | |
281 | { | |
282 | size_t payload_len = 0; | |
283 | ||
284 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); | |
285 | ||
286 | osd_req_op_init(op, opcode); | |
287 | ||
288 | op->extent.offset = offset; | |
289 | op->extent.length = length; | |
290 | op->extent.truncate_size = truncate_size; | |
291 | op->extent.truncate_seq = truncate_seq; | |
292 | if (opcode == CEPH_OSD_OP_WRITE) | |
293 | payload_len += length; | |
294 | ||
295 | op->payload_len = payload_len; | |
296 | } | |
297 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
298 | ||
e5975c7c AE |
299 | void osd_req_op_extent_update(struct ceph_osd_req_op *op, u64 length) |
300 | { | |
301 | u64 previous = op->extent.length; | |
302 | ||
303 | if (length == previous) | |
304 | return; /* Nothing to do */ | |
305 | BUG_ON(length > previous); | |
306 | ||
307 | op->extent.length = length; | |
308 | op->payload_len -= previous - length; | |
309 | } | |
310 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
311 | ||
33803f33 AE |
312 | void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, |
313 | const char *class, const char *method, | |
314 | const void *request_data, size_t request_data_size) | |
315 | { | |
316 | size_t payload_len = 0; | |
317 | size_t size; | |
318 | ||
319 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
320 | ||
321 | osd_req_op_init(op, opcode); | |
322 | ||
323 | op->cls.class_name = class; | |
324 | size = strlen(class); | |
325 | BUG_ON(size > (size_t) U8_MAX); | |
326 | op->cls.class_len = size; | |
327 | payload_len += size; | |
328 | ||
329 | op->cls.method_name = method; | |
330 | size = strlen(method); | |
331 | BUG_ON(size > (size_t) U8_MAX); | |
332 | op->cls.method_len = size; | |
333 | payload_len += size; | |
334 | ||
335 | op->cls.indata = request_data; | |
336 | BUG_ON(request_data_size > (size_t) U32_MAX); | |
337 | op->cls.indata_len = (u32) request_data_size; | |
338 | payload_len += request_data_size; | |
339 | ||
340 | op->cls.argc = 0; /* currently unused */ | |
341 | ||
342 | op->payload_len = payload_len; | |
343 | } | |
344 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
345 | ||
346 | void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, | |
347 | u64 cookie, u64 version, int flag) | |
348 | { | |
349 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); | |
350 | ||
351 | osd_req_op_init(op, opcode); | |
352 | ||
353 | op->watch.cookie = cookie; | |
354 | /* op->watch.ver = version; */ /* XXX 3847 */ | |
355 | op->watch.ver = cpu_to_le64(version); | |
356 | if (opcode == CEPH_OSD_OP_WATCH && flag) | |
357 | op->watch.flag = (u8) 1; | |
358 | } | |
359 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
360 | ||
a8dd0a37 AE |
361 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
362 | struct ceph_osd_op *dst, | |
363 | struct ceph_osd_req_op *src) | |
364 | { | |
365 | u64 out_data_len = 0; | |
366 | struct ceph_pagelist *pagelist; | |
367 | ||
368 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { | |
369 | pr_err("unrecognized osd opcode %d\n", src->op); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | switch (src->op) { | |
375 | case CEPH_OSD_OP_STAT: | |
376 | break; | |
377 | case CEPH_OSD_OP_READ: | |
378 | case CEPH_OSD_OP_WRITE: | |
379 | if (src->op == CEPH_OSD_OP_WRITE) | |
380 | out_data_len = src->extent.length; | |
381 | dst->extent.offset = cpu_to_le64(src->extent.offset); | |
382 | dst->extent.length = cpu_to_le64(src->extent.length); | |
383 | dst->extent.truncate_size = | |
384 | cpu_to_le64(src->extent.truncate_size); | |
385 | dst->extent.truncate_seq = | |
386 | cpu_to_le32(src->extent.truncate_seq); | |
387 | break; | |
388 | case CEPH_OSD_OP_CALL: | |
389 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); | |
390 | BUG_ON(!pagelist); | |
391 | ceph_pagelist_init(pagelist); | |
392 | ||
393 | dst->cls.class_len = src->cls.class_len; | |
394 | dst->cls.method_len = src->cls.method_len; | |
395 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); | |
396 | ceph_pagelist_append(pagelist, src->cls.class_name, | |
397 | src->cls.class_len); | |
398 | ceph_pagelist_append(pagelist, src->cls.method_name, | |
399 | src->cls.method_len); | |
400 | ceph_pagelist_append(pagelist, src->cls.indata, | |
401 | src->cls.indata_len); | |
402 | ||
403 | req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
404 | req->r_data_out.pagelist = pagelist; | |
405 | out_data_len = pagelist->length; | |
406 | break; | |
407 | case CEPH_OSD_OP_STARTSYNC: | |
408 | break; | |
409 | case CEPH_OSD_OP_NOTIFY_ACK: | |
410 | case CEPH_OSD_OP_WATCH: | |
411 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
412 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
413 | dst->watch.flag = src->watch.flag; | |
414 | break; | |
415 | default: | |
4c46459c | 416 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 417 | ceph_osd_op_name(src->op)); |
4c46459c | 418 | WARN_ON(1); |
a8dd0a37 AE |
419 | |
420 | return 0; | |
68b4476b | 421 | } |
a8dd0a37 | 422 | dst->op = cpu_to_le16(src->op); |
68b4476b | 423 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 AE |
424 | |
425 | return out_data_len; | |
68b4476b YS |
426 | } |
427 | ||
3499e8a5 YS |
428 | /* |
429 | * build new request AND message | |
430 | * | |
431 | */ | |
432 | void ceph_osdc_build_request(struct ceph_osd_request *req, | |
175face2 | 433 | u64 off, unsigned int num_ops, |
68b4476b | 434 | struct ceph_osd_req_op *src_ops, |
4d6b250b | 435 | struct ceph_snap_context *snapc, u64 snap_id, |
af77f26c | 436 | struct timespec *mtime) |
3499e8a5 YS |
437 | { |
438 | struct ceph_msg *msg = req->r_request; | |
68b4476b | 439 | struct ceph_osd_req_op *src_op; |
3499e8a5 | 440 | void *p; |
1b83bef2 | 441 | size_t msg_size; |
3499e8a5 | 442 | int flags = req->r_flags; |
f44246e3 | 443 | u64 data_len; |
68b4476b | 444 | int i; |
3499e8a5 | 445 | |
1b83bef2 SW |
446 | req->r_num_ops = num_ops; |
447 | req->r_snapid = snap_id; | |
f24e9980 SW |
448 | req->r_snapc = ceph_get_snap_context(snapc); |
449 | ||
1b83bef2 SW |
450 | /* encode request */ |
451 | msg->hdr.version = cpu_to_le16(4); | |
452 | ||
453 | p = msg->front.iov_base; | |
454 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
455 | req->r_request_osdmap_epoch = p; | |
456 | p += 4; | |
457 | req->r_request_flags = p; | |
458 | p += 4; | |
459 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
460 | ceph_encode_timespec(p, mtime); | |
461 | p += sizeof(struct ceph_timespec); | |
462 | req->r_request_reassert_version = p; | |
463 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
464 | ||
465 | /* oloc */ | |
466 | ceph_encode_8(&p, 4); | |
467 | ceph_encode_8(&p, 4); | |
468 | ceph_encode_32(&p, 8 + 4 + 4); | |
469 | req->r_request_pool = p; | |
470 | p += 8; | |
471 | ceph_encode_32(&p, -1); /* preferred */ | |
472 | ceph_encode_32(&p, 0); /* key len */ | |
473 | ||
474 | ceph_encode_8(&p, 1); | |
475 | req->r_request_pgid = p; | |
476 | p += 8 + 4; | |
477 | ceph_encode_32(&p, -1); /* preferred */ | |
478 | ||
479 | /* oid */ | |
480 | ceph_encode_32(&p, req->r_oid_len); | |
af77f26c | 481 | memcpy(p, req->r_oid, req->r_oid_len); |
1b83bef2 | 482 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); |
af77f26c | 483 | p += req->r_oid_len; |
f24e9980 | 484 | |
175face2 | 485 | /* ops--can imply data */ |
1b83bef2 | 486 | ceph_encode_16(&p, num_ops); |
68b4476b | 487 | src_op = src_ops; |
1b83bef2 | 488 | req->r_request_ops = p; |
175face2 | 489 | data_len = 0; |
1b83bef2 | 490 | for (i = 0; i < num_ops; i++, src_op++) { |
175face2 | 491 | data_len += osd_req_encode_op(req, p, src_op); |
1b83bef2 SW |
492 | p += sizeof(struct ceph_osd_op); |
493 | } | |
68b4476b | 494 | |
1b83bef2 SW |
495 | /* snaps */ |
496 | ceph_encode_64(&p, req->r_snapid); | |
497 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
498 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
499 | if (req->r_snapc) { | |
f24e9980 | 500 | for (i = 0; i < snapc->num_snaps; i++) { |
1b83bef2 | 501 | ceph_encode_64(&p, req->r_snapc->snaps[i]); |
f24e9980 SW |
502 | } |
503 | } | |
504 | ||
1b83bef2 SW |
505 | req->r_request_attempts = p; |
506 | p += 4; | |
507 | ||
175face2 | 508 | /* data */ |
0baa1bd9 AE |
509 | if (flags & CEPH_OSD_FLAG_WRITE) { |
510 | u16 data_off; | |
511 | ||
512 | /* | |
513 | * The header "data_off" is a hint to the receiver | |
514 | * allowing it to align received data into its | |
515 | * buffers such that there's no need to re-copy | |
516 | * it before writing it to disk (direct I/O). | |
517 | */ | |
518 | data_off = (u16) (off & 0xffff); | |
519 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
520 | } | |
f44246e3 | 521 | req->r_request->hdr.data_len = cpu_to_le32(data_len); |
c5c6b19d | 522 | |
f24e9980 | 523 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
524 | msg_size = p - msg->front.iov_base; |
525 | msg->front.iov_len = msg_size; | |
526 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
1b83bef2 | 527 | |
acead002 | 528 | dout("build_request msg_size was %d\n", (int)msg_size); |
3499e8a5 | 529 | } |
3d14c5d2 | 530 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
531 | |
532 | /* | |
533 | * build new request AND message, calculate layout, and adjust file | |
534 | * extent as needed. | |
535 | * | |
536 | * if the file was recently truncated, we include information about its | |
537 | * old and new size so that the object can be updated appropriately. (we | |
538 | * avoid synchronously deleting truncated objects because it's slow.) | |
539 | * | |
540 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
541 | * data quickly. | |
542 | */ | |
543 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
544 | struct ceph_file_layout *layout, | |
545 | struct ceph_vino vino, | |
acead002 AE |
546 | u64 off, u64 *plen, int num_ops, |
547 | struct ceph_osd_req_op *ops, | |
3499e8a5 YS |
548 | int opcode, int flags, |
549 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
550 | u32 truncate_seq, |
551 | u64 truncate_size, | |
153e5167 | 552 | bool use_mempool) |
3499e8a5 | 553 | { |
68b4476b | 554 | struct ceph_osd_request *req; |
75d1c941 AE |
555 | u64 objnum = 0; |
556 | u64 objoff = 0; | |
557 | u64 objlen = 0; | |
d18d1e28 AE |
558 | u32 object_size; |
559 | u64 object_base; | |
6816282d | 560 | int r; |
68b4476b | 561 | |
d18d1e28 | 562 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); |
68b4476b | 563 | |
acead002 | 564 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 565 | GFP_NOFS); |
4ad12621 | 566 | if (!req) |
6816282d | 567 | return ERR_PTR(-ENOMEM); |
d178a9e7 | 568 | req->r_flags = flags; |
3499e8a5 YS |
569 | |
570 | /* calculate max write size */ | |
a19dadfb | 571 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
572 | if (r < 0) { |
573 | ceph_osdc_put_request(req); | |
6816282d | 574 | return ERR_PTR(r); |
3ff5f385 | 575 | } |
a19dadfb | 576 | |
d18d1e28 AE |
577 | object_size = le32_to_cpu(layout->fl_object_size); |
578 | object_base = off - objoff; | |
579 | if (truncate_size <= object_base) { | |
580 | truncate_size = 0; | |
581 | } else { | |
582 | truncate_size -= object_base; | |
583 | if (truncate_size > object_size) | |
584 | truncate_size = object_size; | |
a19dadfb | 585 | } |
d18d1e28 | 586 | |
b0270324 AE |
587 | osd_req_op_extent_init(&ops[0], opcode, objoff, objlen, |
588 | truncate_size, truncate_seq); | |
acead002 AE |
589 | /* |
590 | * A second op in the ops array means the caller wants to | |
591 | * also issue a include a 'startsync' command so that the | |
592 | * osd will flush data quickly. | |
593 | */ | |
594 | if (num_ops > 1) | |
b0270324 | 595 | osd_req_op_init(&ops[1], CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 596 | |
3499e8a5 YS |
597 | req->r_file_layout = *layout; /* keep a copy */ |
598 | ||
75d1c941 AE |
599 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
600 | vino.ino, objnum); | |
dbe0fc41 AE |
601 | req->r_oid_len = strlen(req->r_oid); |
602 | ||
f24e9980 SW |
603 | return req; |
604 | } | |
3d14c5d2 | 605 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
606 | |
607 | /* | |
608 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
609 | */ | |
610 | static void __insert_request(struct ceph_osd_client *osdc, | |
611 | struct ceph_osd_request *new) | |
612 | { | |
613 | struct rb_node **p = &osdc->requests.rb_node; | |
614 | struct rb_node *parent = NULL; | |
615 | struct ceph_osd_request *req = NULL; | |
616 | ||
617 | while (*p) { | |
618 | parent = *p; | |
619 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
620 | if (new->r_tid < req->r_tid) | |
621 | p = &(*p)->rb_left; | |
622 | else if (new->r_tid > req->r_tid) | |
623 | p = &(*p)->rb_right; | |
624 | else | |
625 | BUG(); | |
626 | } | |
627 | ||
628 | rb_link_node(&new->r_node, parent, p); | |
629 | rb_insert_color(&new->r_node, &osdc->requests); | |
630 | } | |
631 | ||
632 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
633 | u64 tid) | |
634 | { | |
635 | struct ceph_osd_request *req; | |
636 | struct rb_node *n = osdc->requests.rb_node; | |
637 | ||
638 | while (n) { | |
639 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
640 | if (tid < req->r_tid) | |
641 | n = n->rb_left; | |
642 | else if (tid > req->r_tid) | |
643 | n = n->rb_right; | |
644 | else | |
645 | return req; | |
646 | } | |
647 | return NULL; | |
648 | } | |
649 | ||
650 | static struct ceph_osd_request * | |
651 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
652 | u64 tid) | |
653 | { | |
654 | struct ceph_osd_request *req; | |
655 | struct rb_node *n = osdc->requests.rb_node; | |
656 | ||
657 | while (n) { | |
658 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
659 | if (tid < req->r_tid) { | |
660 | if (!n->rb_left) | |
661 | return req; | |
662 | n = n->rb_left; | |
663 | } else if (tid > req->r_tid) { | |
664 | n = n->rb_right; | |
665 | } else { | |
666 | return req; | |
667 | } | |
668 | } | |
669 | return NULL; | |
670 | } | |
671 | ||
6f6c7006 SW |
672 | /* |
673 | * Resubmit requests pending on the given osd. | |
674 | */ | |
675 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
676 | struct ceph_osd *osd) | |
677 | { | |
a40c4f10 | 678 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 679 | LIST_HEAD(resend); |
6f6c7006 SW |
680 | int err; |
681 | ||
682 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
683 | err = __reset_osd(osdc, osd); | |
685a7555 | 684 | if (err) |
6f6c7006 | 685 | return; |
e02493c0 AE |
686 | /* |
687 | * Build up a list of requests to resend by traversing the | |
688 | * osd's list of requests. Requests for a given object are | |
689 | * sent in tid order, and that is also the order they're | |
690 | * kept on this list. Therefore all requests that are in | |
691 | * flight will be found first, followed by all requests that | |
692 | * have not yet been sent. And to resend requests while | |
693 | * preserving this order we will want to put any sent | |
694 | * requests back on the front of the osd client's unsent | |
695 | * list. | |
696 | * | |
697 | * So we build a separate ordered list of already-sent | |
698 | * requests for the affected osd and splice it onto the | |
699 | * front of the osd client's unsent list. Once we've seen a | |
700 | * request that has not yet been sent we're done. Those | |
701 | * requests are already sitting right where they belong. | |
702 | */ | |
6f6c7006 | 703 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
704 | if (!req->r_sent) |
705 | break; | |
706 | list_move_tail(&req->r_req_lru_item, &resend); | |
707 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 708 | osd->o_osd); |
a40c4f10 YS |
709 | if (!req->r_linger) |
710 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
711 | } | |
e02493c0 | 712 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 713 | |
e02493c0 AE |
714 | /* |
715 | * Linger requests are re-registered before sending, which | |
716 | * sets up a new tid for each. We add them to the unsent | |
717 | * list at the end to keep things in tid order. | |
718 | */ | |
a40c4f10 YS |
719 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
720 | r_linger_osd) { | |
77f38e0e SW |
721 | /* |
722 | * reregister request prior to unregistering linger so | |
723 | * that r_osd is preserved. | |
724 | */ | |
725 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 726 | __register_request(osdc, req); |
e02493c0 | 727 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 728 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 729 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
730 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
731 | osd->o_osd); | |
6f6c7006 SW |
732 | } |
733 | } | |
734 | ||
f24e9980 | 735 | /* |
81b024e7 | 736 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
737 | */ |
738 | static void osd_reset(struct ceph_connection *con) | |
739 | { | |
740 | struct ceph_osd *osd = con->private; | |
741 | struct ceph_osd_client *osdc; | |
742 | ||
743 | if (!osd) | |
744 | return; | |
745 | dout("osd_reset osd%d\n", osd->o_osd); | |
746 | osdc = osd->o_osdc; | |
f24e9980 | 747 | down_read(&osdc->map_sem); |
83aff95e SW |
748 | mutex_lock(&osdc->request_mutex); |
749 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 750 | __send_queued(osdc); |
83aff95e | 751 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
752 | up_read(&osdc->map_sem); |
753 | } | |
754 | ||
755 | /* | |
756 | * Track open sessions with osds. | |
757 | */ | |
e10006f8 | 758 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
759 | { |
760 | struct ceph_osd *osd; | |
761 | ||
762 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
763 | if (!osd) | |
764 | return NULL; | |
765 | ||
766 | atomic_set(&osd->o_ref, 1); | |
767 | osd->o_osdc = osdc; | |
e10006f8 | 768 | osd->o_osd = onum; |
f407731d | 769 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 770 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 771 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 772 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
773 | osd->o_incarnation = 1; |
774 | ||
b7a9e5dd | 775 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 776 | |
422d2cb8 | 777 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
778 | return osd; |
779 | } | |
780 | ||
781 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
782 | { | |
783 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
784 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
785 | atomic_read(&osd->o_ref)); | |
786 | return osd; | |
787 | } else { | |
788 | dout("get_osd %p FAIL\n", osd); | |
789 | return NULL; | |
790 | } | |
791 | } | |
792 | ||
793 | static void put_osd(struct ceph_osd *osd) | |
794 | { | |
795 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
796 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 797 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
798 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
799 | ||
27859f97 | 800 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 801 | kfree(osd); |
79494d1b | 802 | } |
f24e9980 SW |
803 | } |
804 | ||
805 | /* | |
806 | * remove an osd from our map | |
807 | */ | |
f5a2041b | 808 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 809 | { |
f5a2041b | 810 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
811 | BUG_ON(!list_empty(&osd->o_requests)); |
812 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 813 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
814 | ceph_con_close(&osd->o_con); |
815 | put_osd(osd); | |
816 | } | |
817 | ||
aca420bc SW |
818 | static void remove_all_osds(struct ceph_osd_client *osdc) |
819 | { | |
048a9d2d | 820 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
821 | mutex_lock(&osdc->request_mutex); |
822 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
823 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
824 | struct ceph_osd, o_node); | |
825 | __remove_osd(osdc, osd); | |
826 | } | |
827 | mutex_unlock(&osdc->request_mutex); | |
828 | } | |
829 | ||
f5a2041b YS |
830 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
831 | struct ceph_osd *osd) | |
832 | { | |
833 | dout("__move_osd_to_lru %p\n", osd); | |
834 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
835 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 836 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
837 | } |
838 | ||
839 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
840 | { | |
841 | dout("__remove_osd_from_lru %p\n", osd); | |
842 | if (!list_empty(&osd->o_osd_lru)) | |
843 | list_del_init(&osd->o_osd_lru); | |
844 | } | |
845 | ||
aca420bc | 846 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
847 | { |
848 | struct ceph_osd *osd, *nosd; | |
849 | ||
850 | dout("__remove_old_osds %p\n", osdc); | |
851 | mutex_lock(&osdc->request_mutex); | |
852 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 853 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
854 | break; |
855 | __remove_osd(osdc, osd); | |
856 | } | |
857 | mutex_unlock(&osdc->request_mutex); | |
858 | } | |
859 | ||
f24e9980 SW |
860 | /* |
861 | * reset osd connect | |
862 | */ | |
f5a2041b | 863 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 864 | { |
c3acb181 | 865 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 866 | |
f5a2041b | 867 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
868 | if (list_empty(&osd->o_requests) && |
869 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 870 | __remove_osd(osdc, osd); |
c3acb181 AE |
871 | |
872 | return -ENODEV; | |
873 | } | |
874 | ||
875 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
876 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
877 | !ceph_con_opened(&osd->o_con)) { | |
878 | struct ceph_osd_request *req; | |
879 | ||
87b315a5 SW |
880 | dout(" osd addr hasn't changed and connection never opened," |
881 | " letting msgr retry"); | |
882 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
883 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
884 | req->r_stamp = jiffies; | |
c3acb181 AE |
885 | |
886 | return -EAGAIN; | |
f24e9980 | 887 | } |
c3acb181 AE |
888 | |
889 | ceph_con_close(&osd->o_con); | |
890 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
891 | osd->o_incarnation++; | |
892 | ||
893 | return 0; | |
f24e9980 SW |
894 | } |
895 | ||
896 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
897 | { | |
898 | struct rb_node **p = &osdc->osds.rb_node; | |
899 | struct rb_node *parent = NULL; | |
900 | struct ceph_osd *osd = NULL; | |
901 | ||
aca420bc | 902 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
903 | while (*p) { |
904 | parent = *p; | |
905 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
906 | if (new->o_osd < osd->o_osd) | |
907 | p = &(*p)->rb_left; | |
908 | else if (new->o_osd > osd->o_osd) | |
909 | p = &(*p)->rb_right; | |
910 | else | |
911 | BUG(); | |
912 | } | |
913 | ||
914 | rb_link_node(&new->o_node, parent, p); | |
915 | rb_insert_color(&new->o_node, &osdc->osds); | |
916 | } | |
917 | ||
918 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
919 | { | |
920 | struct ceph_osd *osd; | |
921 | struct rb_node *n = osdc->osds.rb_node; | |
922 | ||
923 | while (n) { | |
924 | osd = rb_entry(n, struct ceph_osd, o_node); | |
925 | if (o < osd->o_osd) | |
926 | n = n->rb_left; | |
927 | else if (o > osd->o_osd) | |
928 | n = n->rb_right; | |
929 | else | |
930 | return osd; | |
931 | } | |
932 | return NULL; | |
933 | } | |
934 | ||
422d2cb8 YS |
935 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
936 | { | |
937 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 938 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
939 | } |
940 | ||
941 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
942 | { | |
943 | cancel_delayed_work(&osdc->timeout_work); | |
944 | } | |
f24e9980 SW |
945 | |
946 | /* | |
947 | * Register request, assign tid. If this is the first request, set up | |
948 | * the timeout event. | |
949 | */ | |
a40c4f10 YS |
950 | static void __register_request(struct ceph_osd_client *osdc, |
951 | struct ceph_osd_request *req) | |
f24e9980 | 952 | { |
f24e9980 | 953 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 954 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 955 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
956 | __insert_request(osdc, req); |
957 | ceph_osdc_get_request(req); | |
958 | osdc->num_requests++; | |
f24e9980 | 959 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
960 | dout(" first request, scheduling timeout\n"); |
961 | __schedule_osd_timeout(osdc); | |
f24e9980 | 962 | } |
a40c4f10 YS |
963 | } |
964 | ||
f24e9980 SW |
965 | /* |
966 | * called under osdc->request_mutex | |
967 | */ | |
968 | static void __unregister_request(struct ceph_osd_client *osdc, | |
969 | struct ceph_osd_request *req) | |
970 | { | |
35f9f8a0 SW |
971 | if (RB_EMPTY_NODE(&req->r_node)) { |
972 | dout("__unregister_request %p tid %lld not registered\n", | |
973 | req, req->r_tid); | |
974 | return; | |
975 | } | |
976 | ||
f24e9980 SW |
977 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
978 | rb_erase(&req->r_node, &osdc->requests); | |
979 | osdc->num_requests--; | |
980 | ||
0ba6478d SW |
981 | if (req->r_osd) { |
982 | /* make sure the original request isn't in flight. */ | |
6740a845 | 983 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
984 | |
985 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
986 | if (list_empty(&req->r_osd->o_requests) && |
987 | list_empty(&req->r_osd->o_linger_requests)) { | |
988 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 989 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 990 | } |
fbdb9190 | 991 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 992 | req->r_osd = NULL; |
0ba6478d | 993 | } |
f24e9980 | 994 | |
7d5f2481 | 995 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
996 | ceph_osdc_put_request(req); |
997 | ||
422d2cb8 YS |
998 | if (osdc->num_requests == 0) { |
999 | dout(" no requests, canceling timeout\n"); | |
1000 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1001 | } |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * Cancel a previously queued request message | |
1006 | */ | |
1007 | static void __cancel_request(struct ceph_osd_request *req) | |
1008 | { | |
6bc18876 | 1009 | if (req->r_sent && req->r_osd) { |
6740a845 | 1010 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1011 | req->r_sent = 0; |
1012 | } | |
1013 | } | |
1014 | ||
a40c4f10 YS |
1015 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1016 | struct ceph_osd_request *req) | |
1017 | { | |
1018 | dout("__register_linger_request %p\n", req); | |
1019 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
1020 | if (req->r_osd) |
1021 | list_add_tail(&req->r_linger_osd, | |
1022 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1023 | } |
1024 | ||
1025 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1026 | struct ceph_osd_request *req) | |
1027 | { | |
1028 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1029 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1030 | if (req->r_osd) { |
a40c4f10 YS |
1031 | list_del_init(&req->r_linger_osd); |
1032 | ||
1033 | if (list_empty(&req->r_osd->o_requests) && | |
1034 | list_empty(&req->r_osd->o_linger_requests)) { | |
1035 | dout("moving osd to %p lru\n", req->r_osd); | |
1036 | __move_osd_to_lru(osdc, req->r_osd); | |
1037 | } | |
fbdb9190 SW |
1038 | if (list_empty(&req->r_osd_item)) |
1039 | req->r_osd = NULL; | |
a40c4f10 YS |
1040 | } |
1041 | } | |
1042 | ||
1043 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1044 | struct ceph_osd_request *req) | |
1045 | { | |
1046 | mutex_lock(&osdc->request_mutex); | |
1047 | if (req->r_linger) { | |
1048 | __unregister_linger_request(osdc, req); | |
1049 | ceph_osdc_put_request(req); | |
1050 | } | |
1051 | mutex_unlock(&osdc->request_mutex); | |
1052 | } | |
1053 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1054 | ||
1055 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1056 | struct ceph_osd_request *req) | |
1057 | { | |
1058 | if (!req->r_linger) { | |
1059 | dout("set_request_linger %p\n", req); | |
1060 | req->r_linger = 1; | |
1061 | /* | |
1062 | * caller is now responsible for calling | |
1063 | * unregister_linger_request | |
1064 | */ | |
1065 | ceph_osdc_get_request(req); | |
1066 | } | |
1067 | } | |
1068 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1069 | ||
f24e9980 SW |
1070 | /* |
1071 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1072 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1073 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1074 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1075 | * |
1076 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1077 | * | |
1078 | * Caller should hold map_sem for read and request_mutex. | |
1079 | */ | |
6f6c7006 | 1080 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1081 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1082 | { |
5b191d99 | 1083 | struct ceph_pg pgid; |
d85b7056 SW |
1084 | int acting[CEPH_PG_MAX_SIZE]; |
1085 | int o = -1, num = 0; | |
f24e9980 | 1086 | int err; |
f24e9980 | 1087 | |
6f6c7006 | 1088 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 AE |
1089 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
1090 | ceph_file_layout_pg_pool(req->r_file_layout)); | |
6f6c7006 SW |
1091 | if (err) { |
1092 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1093 | return err; |
6f6c7006 | 1094 | } |
7740a42f SW |
1095 | req->r_pgid = pgid; |
1096 | ||
d85b7056 SW |
1097 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1098 | if (err > 0) { | |
1099 | o = acting[0]; | |
1100 | num = err; | |
1101 | } | |
f24e9980 | 1102 | |
38d6453c SW |
1103 | if ((!force_resend && |
1104 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1105 | req->r_sent >= req->r_osd->o_incarnation && |
1106 | req->r_num_pg_osds == num && | |
1107 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
1108 | (req->r_osd == NULL && o == -1)) |
1109 | return 0; /* no change */ | |
1110 | ||
5b191d99 SW |
1111 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1112 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1113 | req->r_osd ? req->r_osd->o_osd : -1); |
1114 | ||
d85b7056 SW |
1115 | /* record full pg acting set */ |
1116 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1117 | req->r_num_pg_osds = num; | |
1118 | ||
f24e9980 SW |
1119 | if (req->r_osd) { |
1120 | __cancel_request(req); | |
1121 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1122 | req->r_osd = NULL; |
1123 | } | |
1124 | ||
1125 | req->r_osd = __lookup_osd(osdc, o); | |
1126 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1127 | err = -ENOMEM; |
e10006f8 | 1128 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1129 | if (!req->r_osd) { |
1130 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1131 | goto out; |
6f6c7006 | 1132 | } |
f24e9980 | 1133 | |
6f6c7006 | 1134 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1135 | __insert_osd(osdc, req->r_osd); |
1136 | ||
b7a9e5dd SW |
1137 | ceph_con_open(&req->r_osd->o_con, |
1138 | CEPH_ENTITY_TYPE_OSD, o, | |
1139 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1140 | } |
1141 | ||
f5a2041b YS |
1142 | if (req->r_osd) { |
1143 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1144 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1145 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1146 | } else { |
ad885927 | 1147 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1148 | } |
d85b7056 | 1149 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1150 | |
1151 | out: | |
f24e9980 SW |
1152 | return err; |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * caller should hold map_sem (for read) and request_mutex | |
1157 | */ | |
56e925b6 SW |
1158 | static void __send_request(struct ceph_osd_client *osdc, |
1159 | struct ceph_osd_request *req) | |
f24e9980 | 1160 | { |
1b83bef2 | 1161 | void *p; |
f24e9980 | 1162 | |
1b83bef2 SW |
1163 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1164 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1165 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1166 | ||
1167 | /* fill in message content that changes each time we send it */ | |
1168 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1169 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1170 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1171 | p = req->r_request_pgid; | |
1172 | ceph_encode_64(&p, req->r_pgid.pool); | |
1173 | ceph_encode_32(&p, req->r_pgid.seed); | |
1174 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1175 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1176 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1177 | |
3dd72fc0 | 1178 | req->r_stamp = jiffies; |
07a27e22 | 1179 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1180 | |
1181 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1182 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1183 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1184 | } |
1185 | ||
6f6c7006 SW |
1186 | /* |
1187 | * Send any requests in the queue (req_unsent). | |
1188 | */ | |
f9d25199 | 1189 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1190 | { |
1191 | struct ceph_osd_request *req, *tmp; | |
1192 | ||
f9d25199 AE |
1193 | dout("__send_queued\n"); |
1194 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1195 | __send_request(osdc, req); |
6f6c7006 SW |
1196 | } |
1197 | ||
f24e9980 SW |
1198 | /* |
1199 | * Timeout callback, called every N seconds when 1 or more osd | |
1200 | * requests has been active for more than N seconds. When this | |
1201 | * happens, we ping all OSDs with requests who have timed out to | |
1202 | * ensure any communications channel reset is detected. Reset the | |
1203 | * request timeouts another N seconds in the future as we go. | |
1204 | * Reschedule the timeout event another N seconds in future (unless | |
1205 | * there are no open requests). | |
1206 | */ | |
1207 | static void handle_timeout(struct work_struct *work) | |
1208 | { | |
1209 | struct ceph_osd_client *osdc = | |
1210 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1211 | struct ceph_osd_request *req; |
f24e9980 | 1212 | struct ceph_osd *osd; |
422d2cb8 | 1213 | unsigned long keepalive = |
3d14c5d2 | 1214 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1215 | struct list_head slow_osds; |
f24e9980 SW |
1216 | dout("timeout\n"); |
1217 | down_read(&osdc->map_sem); | |
1218 | ||
1219 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1220 | ||
1221 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1222 | |
422d2cb8 YS |
1223 | /* |
1224 | * ping osds that are a bit slow. this ensures that if there | |
1225 | * is a break in the TCP connection we will notice, and reopen | |
1226 | * a connection with that osd (from the fault callback). | |
1227 | */ | |
1228 | INIT_LIST_HEAD(&slow_osds); | |
1229 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1230 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1231 | break; |
1232 | ||
1233 | osd = req->r_osd; | |
1234 | BUG_ON(!osd); | |
1235 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1236 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1237 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1238 | } | |
1239 | while (!list_empty(&slow_osds)) { | |
1240 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1241 | o_keepalive_item); | |
1242 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1243 | ceph_con_keepalive(&osd->o_con); |
1244 | } | |
1245 | ||
422d2cb8 | 1246 | __schedule_osd_timeout(osdc); |
f9d25199 | 1247 | __send_queued(osdc); |
f24e9980 | 1248 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1249 | up_read(&osdc->map_sem); |
1250 | } | |
1251 | ||
f5a2041b YS |
1252 | static void handle_osds_timeout(struct work_struct *work) |
1253 | { | |
1254 | struct ceph_osd_client *osdc = | |
1255 | container_of(work, struct ceph_osd_client, | |
1256 | osds_timeout_work.work); | |
1257 | unsigned long delay = | |
3d14c5d2 | 1258 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1259 | |
1260 | dout("osds timeout\n"); | |
1261 | down_read(&osdc->map_sem); | |
aca420bc | 1262 | remove_old_osds(osdc); |
f5a2041b YS |
1263 | up_read(&osdc->map_sem); |
1264 | ||
1265 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1266 | round_jiffies_relative(delay)); | |
1267 | } | |
1268 | ||
25845472 SW |
1269 | static void complete_request(struct ceph_osd_request *req) |
1270 | { | |
1271 | if (req->r_safe_callback) | |
1272 | req->r_safe_callback(req, NULL); | |
1273 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1274 | } | |
1275 | ||
f24e9980 SW |
1276 | /* |
1277 | * handle osd op reply. either call the callback if it is specified, | |
1278 | * or do the completion to wake up the waiting thread. | |
1279 | */ | |
350b1c32 SW |
1280 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1281 | struct ceph_connection *con) | |
f24e9980 | 1282 | { |
1b83bef2 | 1283 | void *p, *end; |
f24e9980 SW |
1284 | struct ceph_osd_request *req; |
1285 | u64 tid; | |
1b83bef2 SW |
1286 | int object_len; |
1287 | int numops, payload_len, flags; | |
0ceed5db | 1288 | s32 result; |
1b83bef2 SW |
1289 | s32 retry_attempt; |
1290 | struct ceph_pg pg; | |
1291 | int err; | |
1292 | u32 reassert_epoch; | |
1293 | u64 reassert_version; | |
1294 | u32 osdmap_epoch; | |
0d5af164 | 1295 | int already_completed; |
1b83bef2 | 1296 | int i; |
f24e9980 | 1297 | |
6df058c0 | 1298 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1299 | dout("handle_reply %p tid %llu\n", msg, tid); |
1300 | ||
1301 | p = msg->front.iov_base; | |
1302 | end = p + msg->front.iov_len; | |
1303 | ||
1304 | ceph_decode_need(&p, end, 4, bad); | |
1305 | object_len = ceph_decode_32(&p); | |
1306 | ceph_decode_need(&p, end, object_len, bad); | |
1307 | p += object_len; | |
1308 | ||
ef4859d6 | 1309 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1310 | if (err) |
f24e9980 | 1311 | goto bad; |
1b83bef2 SW |
1312 | |
1313 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1314 | flags = ceph_decode_64(&p); | |
1315 | result = ceph_decode_32(&p); | |
1316 | reassert_epoch = ceph_decode_32(&p); | |
1317 | reassert_version = ceph_decode_64(&p); | |
1318 | osdmap_epoch = ceph_decode_32(&p); | |
1319 | ||
f24e9980 SW |
1320 | /* lookup */ |
1321 | mutex_lock(&osdc->request_mutex); | |
1322 | req = __lookup_request(osdc, tid); | |
1323 | if (req == NULL) { | |
1324 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1325 | goto bad_mutex; |
f24e9980 SW |
1326 | } |
1327 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1328 | |
1329 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1330 | req, result); | |
1331 | ||
1332 | ceph_decode_need(&p, end, 4, bad); | |
1333 | numops = ceph_decode_32(&p); | |
1334 | if (numops > CEPH_OSD_MAX_OP) | |
1335 | goto bad_put; | |
1336 | if (numops != req->r_num_ops) | |
1337 | goto bad_put; | |
1338 | payload_len = 0; | |
1339 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1340 | for (i = 0; i < numops; i++) { | |
1341 | struct ceph_osd_op *op = p; | |
1342 | int len; | |
1343 | ||
1344 | len = le32_to_cpu(op->payload_len); | |
1345 | req->r_reply_op_len[i] = len; | |
1346 | dout(" op %d has %d bytes\n", i, len); | |
1347 | payload_len += len; | |
1348 | p += sizeof(*op); | |
1349 | } | |
1350 | if (payload_len != le32_to_cpu(msg->hdr.data_len)) { | |
1351 | pr_warning("sum of op payload lens %d != data_len %d", | |
1352 | payload_len, le32_to_cpu(msg->hdr.data_len)); | |
1353 | goto bad_put; | |
1354 | } | |
1355 | ||
1356 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1357 | retry_attempt = ceph_decode_32(&p); | |
1358 | for (i = 0; i < numops; i++) | |
1359 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1360 | |
f24e9980 | 1361 | if (!req->r_got_reply) { |
95c96174 | 1362 | unsigned int bytes; |
f24e9980 | 1363 | |
1b83bef2 | 1364 | req->r_result = result; |
f24e9980 SW |
1365 | bytes = le32_to_cpu(msg->hdr.data_len); |
1366 | dout("handle_reply result %d bytes %d\n", req->r_result, | |
1367 | bytes); | |
1368 | if (req->r_result == 0) | |
1369 | req->r_result = bytes; | |
1370 | ||
1371 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1372 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1373 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1374 | |
1375 | req->r_got_reply = 1; | |
1376 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1377 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1378 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1379 | goto done; |
1380 | } | |
1381 | ||
1382 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1383 | ||
a40c4f10 YS |
1384 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1385 | __register_linger_request(osdc, req); | |
1386 | ||
f24e9980 | 1387 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1388 | if (result < 0 || |
1389 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1390 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1391 | __unregister_request(osdc, req); | |
1392 | ||
0d5af164 AE |
1393 | already_completed = req->r_completed; |
1394 | req->r_completed = 1; | |
f24e9980 | 1395 | mutex_unlock(&osdc->request_mutex); |
0d5af164 AE |
1396 | if (already_completed) |
1397 | goto done; | |
f24e9980 SW |
1398 | |
1399 | if (req->r_callback) | |
1400 | req->r_callback(req, msg); | |
1401 | else | |
03066f23 | 1402 | complete_all(&req->r_completion); |
f24e9980 | 1403 | |
25845472 SW |
1404 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1405 | complete_request(req); | |
f24e9980 SW |
1406 | |
1407 | done: | |
a40c4f10 | 1408 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1409 | ceph_osdc_put_request(req); |
1410 | return; | |
1411 | ||
1b83bef2 SW |
1412 | bad_put: |
1413 | ceph_osdc_put_request(req); | |
8058fd45 AE |
1414 | bad_mutex: |
1415 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1416 | bad: |
1b83bef2 SW |
1417 | pr_err("corrupt osd_op_reply got %d %d\n", |
1418 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1419 | ceph_msg_dump(msg); |
f24e9980 SW |
1420 | } |
1421 | ||
6f6c7006 | 1422 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1423 | { |
f24e9980 | 1424 | struct rb_node *p, *n; |
f24e9980 | 1425 | |
6f6c7006 SW |
1426 | for (p = rb_first(&osdc->osds); p; p = n) { |
1427 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1428 | |
6f6c7006 SW |
1429 | n = rb_next(p); |
1430 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1431 | memcmp(&osd->o_con.peer_addr, | |
1432 | ceph_osd_addr(osdc->osdmap, | |
1433 | osd->o_osd), | |
1434 | sizeof(struct ceph_entity_addr)) != 0) | |
1435 | __reset_osd(osdc, osd); | |
f24e9980 | 1436 | } |
422d2cb8 YS |
1437 | } |
1438 | ||
1439 | /* | |
6f6c7006 SW |
1440 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1441 | * no osd, request a new map. | |
422d2cb8 | 1442 | * |
e6d50f67 | 1443 | * Caller should hold map_sem for read. |
422d2cb8 | 1444 | */ |
38d6453c | 1445 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1446 | { |
a40c4f10 | 1447 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1448 | struct rb_node *p; |
1449 | int needmap = 0; | |
1450 | int err; | |
422d2cb8 | 1451 | |
38d6453c | 1452 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1453 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1454 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1455 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1456 | p = rb_next(p); |
ab60b16d AE |
1457 | |
1458 | /* | |
1459 | * For linger requests that have not yet been | |
1460 | * registered, move them to the linger list; they'll | |
1461 | * be sent to the osd in the loop below. Unregister | |
1462 | * the request before re-registering it as a linger | |
1463 | * request to ensure the __map_request() below | |
1464 | * will decide it needs to be sent. | |
1465 | */ | |
1466 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1467 | dout("%p tid %llu restart on osd%d\n", | |
1468 | req, req->r_tid, | |
1469 | req->r_osd ? req->r_osd->o_osd : -1); | |
1470 | __unregister_request(osdc, req); | |
1471 | __register_linger_request(osdc, req); | |
1472 | continue; | |
1473 | } | |
1474 | ||
38d6453c | 1475 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1476 | if (err < 0) |
1477 | continue; /* error */ | |
1478 | if (req->r_osd == NULL) { | |
1479 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1480 | needmap++; /* request a newer map */ | |
1481 | } else if (err > 0) { | |
6194ea89 SW |
1482 | if (!req->r_linger) { |
1483 | dout("%p tid %llu requeued on osd%d\n", req, | |
1484 | req->r_tid, | |
1485 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1486 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1487 | } |
1488 | } | |
a40c4f10 YS |
1489 | } |
1490 | ||
1491 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1492 | r_linger_item) { | |
1493 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1494 | ||
38d6453c | 1495 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1496 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1497 | if (err == 0) |
1498 | continue; /* no change and no osd was specified */ | |
1499 | if (err < 0) | |
1500 | continue; /* hrm! */ | |
1501 | if (req->r_osd == NULL) { | |
1502 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1503 | needmap++; /* request a newer map */ | |
1504 | continue; | |
6f6c7006 | 1505 | } |
a40c4f10 YS |
1506 | |
1507 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1508 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1509 | __register_request(osdc, req); |
c89ce05e | 1510 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1511 | } |
f24e9980 SW |
1512 | mutex_unlock(&osdc->request_mutex); |
1513 | ||
1514 | if (needmap) { | |
1515 | dout("%d requests for down osds, need new map\n", needmap); | |
1516 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1517 | } | |
e6d50f67 | 1518 | reset_changed_osds(osdc); |
422d2cb8 | 1519 | } |
6f6c7006 SW |
1520 | |
1521 | ||
f24e9980 SW |
1522 | /* |
1523 | * Process updated osd map. | |
1524 | * | |
1525 | * The message contains any number of incremental and full maps, normally | |
1526 | * indicating some sort of topology change in the cluster. Kick requests | |
1527 | * off to different OSDs as needed. | |
1528 | */ | |
1529 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1530 | { | |
1531 | void *p, *end, *next; | |
1532 | u32 nr_maps, maplen; | |
1533 | u32 epoch; | |
1534 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1535 | int err; | |
1536 | struct ceph_fsid fsid; | |
1537 | ||
1538 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1539 | p = msg->front.iov_base; | |
1540 | end = p + msg->front.iov_len; | |
1541 | ||
1542 | /* verify fsid */ | |
1543 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1544 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1545 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1546 | return; | |
f24e9980 SW |
1547 | |
1548 | down_write(&osdc->map_sem); | |
1549 | ||
1550 | /* incremental maps */ | |
1551 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1552 | dout(" %d inc maps\n", nr_maps); | |
1553 | while (nr_maps > 0) { | |
1554 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1555 | epoch = ceph_decode_32(&p); |
1556 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1557 | ceph_decode_need(&p, end, maplen, bad); |
1558 | next = p + maplen; | |
1559 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1560 | dout("applying incremental map %u len %d\n", | |
1561 | epoch, maplen); | |
1562 | newmap = osdmap_apply_incremental(&p, next, | |
1563 | osdc->osdmap, | |
15d9882c | 1564 | &osdc->client->msgr); |
f24e9980 SW |
1565 | if (IS_ERR(newmap)) { |
1566 | err = PTR_ERR(newmap); | |
1567 | goto bad; | |
1568 | } | |
30dc6381 | 1569 | BUG_ON(!newmap); |
f24e9980 SW |
1570 | if (newmap != osdc->osdmap) { |
1571 | ceph_osdmap_destroy(osdc->osdmap); | |
1572 | osdc->osdmap = newmap; | |
1573 | } | |
38d6453c | 1574 | kick_requests(osdc, 0); |
f24e9980 SW |
1575 | } else { |
1576 | dout("ignoring incremental map %u len %d\n", | |
1577 | epoch, maplen); | |
1578 | } | |
1579 | p = next; | |
1580 | nr_maps--; | |
1581 | } | |
1582 | if (newmap) | |
1583 | goto done; | |
1584 | ||
1585 | /* full maps */ | |
1586 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1587 | dout(" %d full maps\n", nr_maps); | |
1588 | while (nr_maps) { | |
1589 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1590 | epoch = ceph_decode_32(&p); |
1591 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1592 | ceph_decode_need(&p, end, maplen, bad); |
1593 | if (nr_maps > 1) { | |
1594 | dout("skipping non-latest full map %u len %d\n", | |
1595 | epoch, maplen); | |
1596 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1597 | dout("skipping full map %u len %d, " | |
1598 | "older than our %u\n", epoch, maplen, | |
1599 | osdc->osdmap->epoch); | |
1600 | } else { | |
38d6453c SW |
1601 | int skipped_map = 0; |
1602 | ||
f24e9980 SW |
1603 | dout("taking full map %u len %d\n", epoch, maplen); |
1604 | newmap = osdmap_decode(&p, p+maplen); | |
1605 | if (IS_ERR(newmap)) { | |
1606 | err = PTR_ERR(newmap); | |
1607 | goto bad; | |
1608 | } | |
30dc6381 | 1609 | BUG_ON(!newmap); |
f24e9980 SW |
1610 | oldmap = osdc->osdmap; |
1611 | osdc->osdmap = newmap; | |
38d6453c SW |
1612 | if (oldmap) { |
1613 | if (oldmap->epoch + 1 < newmap->epoch) | |
1614 | skipped_map = 1; | |
f24e9980 | 1615 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1616 | } |
1617 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1618 | } |
1619 | p += maplen; | |
1620 | nr_maps--; | |
1621 | } | |
1622 | ||
1623 | done: | |
1624 | downgrade_write(&osdc->map_sem); | |
1625 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1626 | |
1627 | /* | |
1628 | * subscribe to subsequent osdmap updates if full to ensure | |
1629 | * we find out when we are no longer full and stop returning | |
1630 | * ENOSPC. | |
1631 | */ | |
1632 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1633 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1634 | ||
f9d25199 AE |
1635 | mutex_lock(&osdc->request_mutex); |
1636 | __send_queued(osdc); | |
1637 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1638 | up_read(&osdc->map_sem); |
03066f23 | 1639 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1640 | return; |
1641 | ||
1642 | bad: | |
1643 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1644 | ceph_msg_dump(msg); |
f24e9980 SW |
1645 | up_write(&osdc->map_sem); |
1646 | return; | |
1647 | } | |
1648 | ||
a40c4f10 YS |
1649 | /* |
1650 | * watch/notify callback event infrastructure | |
1651 | * | |
1652 | * These callbacks are used both for watch and notify operations. | |
1653 | */ | |
1654 | static void __release_event(struct kref *kref) | |
1655 | { | |
1656 | struct ceph_osd_event *event = | |
1657 | container_of(kref, struct ceph_osd_event, kref); | |
1658 | ||
1659 | dout("__release_event %p\n", event); | |
1660 | kfree(event); | |
1661 | } | |
1662 | ||
1663 | static void get_event(struct ceph_osd_event *event) | |
1664 | { | |
1665 | kref_get(&event->kref); | |
1666 | } | |
1667 | ||
1668 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1669 | { | |
1670 | kref_put(&event->kref, __release_event); | |
1671 | } | |
1672 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1673 | ||
1674 | static void __insert_event(struct ceph_osd_client *osdc, | |
1675 | struct ceph_osd_event *new) | |
1676 | { | |
1677 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1678 | struct rb_node *parent = NULL; | |
1679 | struct ceph_osd_event *event = NULL; | |
1680 | ||
1681 | while (*p) { | |
1682 | parent = *p; | |
1683 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1684 | if (new->cookie < event->cookie) | |
1685 | p = &(*p)->rb_left; | |
1686 | else if (new->cookie > event->cookie) | |
1687 | p = &(*p)->rb_right; | |
1688 | else | |
1689 | BUG(); | |
1690 | } | |
1691 | ||
1692 | rb_link_node(&new->node, parent, p); | |
1693 | rb_insert_color(&new->node, &osdc->event_tree); | |
1694 | } | |
1695 | ||
1696 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1697 | u64 cookie) | |
1698 | { | |
1699 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1700 | struct rb_node *parent = NULL; | |
1701 | struct ceph_osd_event *event = NULL; | |
1702 | ||
1703 | while (*p) { | |
1704 | parent = *p; | |
1705 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1706 | if (cookie < event->cookie) | |
1707 | p = &(*p)->rb_left; | |
1708 | else if (cookie > event->cookie) | |
1709 | p = &(*p)->rb_right; | |
1710 | else | |
1711 | return event; | |
1712 | } | |
1713 | return NULL; | |
1714 | } | |
1715 | ||
1716 | static void __remove_event(struct ceph_osd_event *event) | |
1717 | { | |
1718 | struct ceph_osd_client *osdc = event->osdc; | |
1719 | ||
1720 | if (!RB_EMPTY_NODE(&event->node)) { | |
1721 | dout("__remove_event removed %p\n", event); | |
1722 | rb_erase(&event->node, &osdc->event_tree); | |
1723 | ceph_osdc_put_event(event); | |
1724 | } else { | |
1725 | dout("__remove_event didn't remove %p\n", event); | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1730 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1731 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1732 | { |
1733 | struct ceph_osd_event *event; | |
1734 | ||
1735 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1736 | if (!event) | |
1737 | return -ENOMEM; | |
1738 | ||
1739 | dout("create_event %p\n", event); | |
1740 | event->cb = event_cb; | |
3c663bbd | 1741 | event->one_shot = 0; |
a40c4f10 YS |
1742 | event->data = data; |
1743 | event->osdc = osdc; | |
1744 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1745 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1746 | kref_init(&event->kref); /* one ref for us */ |
1747 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1748 | |
1749 | spin_lock(&osdc->event_lock); | |
1750 | event->cookie = ++osdc->event_count; | |
1751 | __insert_event(osdc, event); | |
1752 | spin_unlock(&osdc->event_lock); | |
1753 | ||
1754 | *pevent = event; | |
1755 | return 0; | |
1756 | } | |
1757 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1758 | ||
1759 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1760 | { | |
1761 | struct ceph_osd_client *osdc = event->osdc; | |
1762 | ||
1763 | dout("cancel_event %p\n", event); | |
1764 | spin_lock(&osdc->event_lock); | |
1765 | __remove_event(event); | |
1766 | spin_unlock(&osdc->event_lock); | |
1767 | ceph_osdc_put_event(event); /* caller's */ | |
1768 | } | |
1769 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1770 | ||
1771 | ||
1772 | static void do_event_work(struct work_struct *work) | |
1773 | { | |
1774 | struct ceph_osd_event_work *event_work = | |
1775 | container_of(work, struct ceph_osd_event_work, work); | |
1776 | struct ceph_osd_event *event = event_work->event; | |
1777 | u64 ver = event_work->ver; | |
1778 | u64 notify_id = event_work->notify_id; | |
1779 | u8 opcode = event_work->opcode; | |
1780 | ||
1781 | dout("do_event_work completing %p\n", event); | |
1782 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1783 | dout("do_event_work completed %p\n", event); |
1784 | ceph_osdc_put_event(event); | |
1785 | kfree(event_work); | |
1786 | } | |
1787 | ||
1788 | ||
1789 | /* | |
1790 | * Process osd watch notifications | |
1791 | */ | |
3c663bbd AE |
1792 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1793 | struct ceph_msg *msg) | |
a40c4f10 YS |
1794 | { |
1795 | void *p, *end; | |
1796 | u8 proto_ver; | |
1797 | u64 cookie, ver, notify_id; | |
1798 | u8 opcode; | |
1799 | struct ceph_osd_event *event; | |
1800 | struct ceph_osd_event_work *event_work; | |
1801 | ||
1802 | p = msg->front.iov_base; | |
1803 | end = p + msg->front.iov_len; | |
1804 | ||
1805 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1806 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1807 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1808 | ceph_decode_64_safe(&p, end, ver, bad); | |
1809 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1810 | ||
1811 | spin_lock(&osdc->event_lock); | |
1812 | event = __find_event(osdc, cookie); | |
1813 | if (event) { | |
3c663bbd | 1814 | BUG_ON(event->one_shot); |
a40c4f10 | 1815 | get_event(event); |
a40c4f10 YS |
1816 | } |
1817 | spin_unlock(&osdc->event_lock); | |
1818 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1819 | cookie, ver, event); | |
1820 | if (event) { | |
1821 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1822 | if (!event_work) { |
1823 | dout("ERROR: could not allocate event_work\n"); | |
1824 | goto done_err; | |
1825 | } | |
6b0ae409 | 1826 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1827 | event_work->event = event; |
1828 | event_work->ver = ver; | |
1829 | event_work->notify_id = notify_id; | |
1830 | event_work->opcode = opcode; | |
1831 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1832 | dout("WARNING: failed to queue notify event work\n"); | |
1833 | goto done_err; | |
1834 | } | |
1835 | } | |
1836 | ||
1837 | return; | |
1838 | ||
1839 | done_err: | |
a40c4f10 YS |
1840 | ceph_osdc_put_event(event); |
1841 | return; | |
1842 | ||
1843 | bad: | |
1844 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1845 | return; | |
1846 | } | |
1847 | ||
70636773 AE |
1848 | static void ceph_osdc_msg_data_set(struct ceph_msg *msg, |
1849 | struct ceph_osd_data *osd_data) | |
f24e9980 | 1850 | { |
0fff87ec | 1851 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
f1baeb2b | 1852 | BUG_ON(osd_data->length > (u64) SIZE_MAX); |
ebf18f47 | 1853 | if (osd_data->length) |
70636773 AE |
1854 | ceph_msg_data_set_pages(msg, osd_data->pages, |
1855 | osd_data->length, osd_data->alignment); | |
9a5e6d09 AE |
1856 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { |
1857 | BUG_ON(!osd_data->pagelist->length); | |
1858 | ceph_msg_data_set_pagelist(msg, osd_data->pagelist); | |
68b4476b | 1859 | #ifdef CONFIG_BLOCK |
0fff87ec | 1860 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { |
a1930804 | 1861 | ceph_msg_data_set_bio(msg, osd_data->bio, osd_data->bio_length); |
68b4476b | 1862 | #endif |
2ac2b7a6 | 1863 | } else { |
0fff87ec | 1864 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); |
2ac2b7a6 | 1865 | } |
70636773 AE |
1866 | } |
1867 | ||
1868 | /* | |
1869 | * Register request, send initial attempt. | |
1870 | */ | |
1871 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1872 | struct ceph_osd_request *req, | |
1873 | bool nofail) | |
1874 | { | |
1875 | int rc = 0; | |
1876 | ||
1877 | /* Set up response incoming data and request outgoing data fields */ | |
1878 | ||
1879 | ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); | |
1880 | ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); | |
f24e9980 | 1881 | |
f24e9980 SW |
1882 | down_read(&osdc->map_sem); |
1883 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 1884 | __register_request(osdc, req); |
92451b49 AE |
1885 | WARN_ON(req->r_sent); |
1886 | rc = __map_request(osdc, req, 0); | |
1887 | if (rc < 0) { | |
1888 | if (nofail) { | |
1889 | dout("osdc_start_request failed map, " | |
1890 | " will retry %lld\n", req->r_tid); | |
1891 | rc = 0; | |
f24e9980 | 1892 | } |
92451b49 | 1893 | goto out_unlock; |
f24e9980 | 1894 | } |
92451b49 AE |
1895 | if (req->r_osd == NULL) { |
1896 | dout("send_request %p no up osds in pg\n", req); | |
1897 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1898 | } else { | |
7e2766a1 | 1899 | __send_queued(osdc); |
92451b49 AE |
1900 | } |
1901 | rc = 0; | |
234af26f | 1902 | out_unlock: |
f24e9980 SW |
1903 | mutex_unlock(&osdc->request_mutex); |
1904 | up_read(&osdc->map_sem); | |
1905 | return rc; | |
1906 | } | |
3d14c5d2 | 1907 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
1908 | |
1909 | /* | |
1910 | * wait for a request to complete | |
1911 | */ | |
1912 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
1913 | struct ceph_osd_request *req) | |
1914 | { | |
1915 | int rc; | |
1916 | ||
1917 | rc = wait_for_completion_interruptible(&req->r_completion); | |
1918 | if (rc < 0) { | |
1919 | mutex_lock(&osdc->request_mutex); | |
1920 | __cancel_request(req); | |
529cfcc4 | 1921 | __unregister_request(osdc, req); |
f24e9980 | 1922 | mutex_unlock(&osdc->request_mutex); |
25845472 | 1923 | complete_request(req); |
529cfcc4 | 1924 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
1925 | return rc; |
1926 | } | |
1927 | ||
1928 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
1929 | return req->r_result; | |
1930 | } | |
3d14c5d2 | 1931 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
1932 | |
1933 | /* | |
1934 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
1935 | */ | |
1936 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
1937 | { | |
1938 | struct ceph_osd_request *req; | |
1939 | u64 last_tid, next_tid = 0; | |
1940 | ||
1941 | mutex_lock(&osdc->request_mutex); | |
1942 | last_tid = osdc->last_tid; | |
1943 | while (1) { | |
1944 | req = __lookup_request_ge(osdc, next_tid); | |
1945 | if (!req) | |
1946 | break; | |
1947 | if (req->r_tid > last_tid) | |
1948 | break; | |
1949 | ||
1950 | next_tid = req->r_tid + 1; | |
1951 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
1952 | continue; | |
1953 | ||
1954 | ceph_osdc_get_request(req); | |
1955 | mutex_unlock(&osdc->request_mutex); | |
1956 | dout("sync waiting on tid %llu (last is %llu)\n", | |
1957 | req->r_tid, last_tid); | |
1958 | wait_for_completion(&req->r_safe_completion); | |
1959 | mutex_lock(&osdc->request_mutex); | |
1960 | ceph_osdc_put_request(req); | |
1961 | } | |
1962 | mutex_unlock(&osdc->request_mutex); | |
1963 | dout("sync done (thru tid %llu)\n", last_tid); | |
1964 | } | |
3d14c5d2 | 1965 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
1966 | |
1967 | /* | |
1968 | * init, shutdown | |
1969 | */ | |
1970 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
1971 | { | |
1972 | int err; | |
1973 | ||
1974 | dout("init\n"); | |
1975 | osdc->client = client; | |
1976 | osdc->osdmap = NULL; | |
1977 | init_rwsem(&osdc->map_sem); | |
1978 | init_completion(&osdc->map_waiters); | |
1979 | osdc->last_requested_map = 0; | |
1980 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
1981 | osdc->last_tid = 0; |
1982 | osdc->osds = RB_ROOT; | |
f5a2041b | 1983 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 1984 | osdc->requests = RB_ROOT; |
422d2cb8 | 1985 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
1986 | INIT_LIST_HEAD(&osdc->req_unsent); |
1987 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 1988 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
1989 | osdc->num_requests = 0; |
1990 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 1991 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
1992 | spin_lock_init(&osdc->event_lock); |
1993 | osdc->event_tree = RB_ROOT; | |
1994 | osdc->event_count = 0; | |
f5a2041b YS |
1995 | |
1996 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 1997 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 1998 | |
5f44f142 | 1999 | err = -ENOMEM; |
f24e9980 SW |
2000 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2001 | sizeof(struct ceph_osd_request)); | |
2002 | if (!osdc->req_mempool) | |
5f44f142 | 2003 | goto out; |
f24e9980 | 2004 | |
d50b409f SW |
2005 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2006 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2007 | "osd_op"); |
f24e9980 | 2008 | if (err < 0) |
5f44f142 | 2009 | goto out_mempool; |
d50b409f | 2010 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2011 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2012 | "osd_op_reply"); | |
c16e7869 SW |
2013 | if (err < 0) |
2014 | goto out_msgpool; | |
a40c4f10 YS |
2015 | |
2016 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
2017 | if (IS_ERR(osdc->notify_wq)) { | |
2018 | err = PTR_ERR(osdc->notify_wq); | |
2019 | osdc->notify_wq = NULL; | |
2020 | goto out_msgpool; | |
2021 | } | |
f24e9980 | 2022 | return 0; |
5f44f142 | 2023 | |
c16e7869 SW |
2024 | out_msgpool: |
2025 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2026 | out_mempool: |
2027 | mempool_destroy(osdc->req_mempool); | |
2028 | out: | |
2029 | return err; | |
f24e9980 SW |
2030 | } |
2031 | ||
2032 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2033 | { | |
a40c4f10 YS |
2034 | flush_workqueue(osdc->notify_wq); |
2035 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2036 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2037 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2038 | if (osdc->osdmap) { |
2039 | ceph_osdmap_destroy(osdc->osdmap); | |
2040 | osdc->osdmap = NULL; | |
2041 | } | |
aca420bc | 2042 | remove_all_osds(osdc); |
f24e9980 SW |
2043 | mempool_destroy(osdc->req_mempool); |
2044 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2045 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2046 | } |
2047 | ||
2048 | /* | |
2049 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2050 | * *plen. Return number of bytes read, or error. | |
2051 | */ | |
2052 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2053 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2054 | u64 off, u64 *plen, | |
2055 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2056 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2057 | { |
2058 | struct ceph_osd_request *req; | |
0fff87ec | 2059 | struct ceph_osd_data *osd_data; |
acead002 | 2060 | struct ceph_osd_req_op op; |
f24e9980 SW |
2061 | int rc = 0; |
2062 | ||
2063 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2064 | vino.snap, off, *plen); | |
acead002 | 2065 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, &op, |
f24e9980 | 2066 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2067 | NULL, truncate_seq, truncate_size, |
153e5167 | 2068 | false); |
6816282d SW |
2069 | if (IS_ERR(req)) |
2070 | return PTR_ERR(req); | |
f24e9980 SW |
2071 | |
2072 | /* it may be a short read due to an object boundary */ | |
0fff87ec AE |
2073 | |
2074 | osd_data = &req->r_data_in; | |
2075 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
2076 | osd_data->pages = pages; | |
e0c59487 | 2077 | osd_data->length = *plen; |
0fff87ec | 2078 | osd_data->alignment = page_align; |
f24e9980 | 2079 | |
e0c59487 AE |
2080 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
2081 | off, *plen, osd_data->length, page_align); | |
f24e9980 | 2082 | |
02ee07d3 AE |
2083 | ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL); |
2084 | ||
f24e9980 SW |
2085 | rc = ceph_osdc_start_request(osdc, req, false); |
2086 | if (!rc) | |
2087 | rc = ceph_osdc_wait_request(osdc, req); | |
2088 | ||
2089 | ceph_osdc_put_request(req); | |
2090 | dout("readpages result %d\n", rc); | |
2091 | return rc; | |
2092 | } | |
3d14c5d2 | 2093 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2094 | |
2095 | /* | |
2096 | * do a synchronous write on N pages | |
2097 | */ | |
2098 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2099 | struct ceph_file_layout *layout, | |
2100 | struct ceph_snap_context *snapc, | |
2101 | u64 off, u64 len, | |
2102 | u32 truncate_seq, u64 truncate_size, | |
2103 | struct timespec *mtime, | |
24808826 | 2104 | struct page **pages, int num_pages) |
f24e9980 SW |
2105 | { |
2106 | struct ceph_osd_request *req; | |
0fff87ec | 2107 | struct ceph_osd_data *osd_data; |
acead002 | 2108 | struct ceph_osd_req_op op; |
f24e9980 | 2109 | int rc = 0; |
b7495fc2 | 2110 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2111 | |
acead002 AE |
2112 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
2113 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, &op, | |
f24e9980 | 2114 | CEPH_OSD_OP_WRITE, |
24808826 | 2115 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2116 | snapc, truncate_seq, truncate_size, |
153e5167 | 2117 | true); |
6816282d SW |
2118 | if (IS_ERR(req)) |
2119 | return PTR_ERR(req); | |
f24e9980 SW |
2120 | |
2121 | /* it may be a short write due to an object boundary */ | |
0fff87ec AE |
2122 | osd_data = &req->r_data_out; |
2123 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
2124 | osd_data->pages = pages; | |
e0c59487 | 2125 | osd_data->length = len; |
0fff87ec | 2126 | osd_data->alignment = page_align; |
e0c59487 | 2127 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); |
f24e9980 | 2128 | |
02ee07d3 AE |
2129 | ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime); |
2130 | ||
87f979d3 | 2131 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2132 | if (!rc) |
2133 | rc = ceph_osdc_wait_request(osdc, req); | |
2134 | ||
2135 | ceph_osdc_put_request(req); | |
2136 | if (rc == 0) | |
2137 | rc = len; | |
2138 | dout("writepages result %d\n", rc); | |
2139 | return rc; | |
2140 | } | |
3d14c5d2 | 2141 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2142 | |
2143 | /* | |
2144 | * handle incoming message | |
2145 | */ | |
2146 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2147 | { | |
2148 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2149 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2150 | int type = le16_to_cpu(msg->hdr.type); |
2151 | ||
2152 | if (!osd) | |
4a32f93d | 2153 | goto out; |
32c895e7 | 2154 | osdc = osd->o_osdc; |
f24e9980 SW |
2155 | |
2156 | switch (type) { | |
2157 | case CEPH_MSG_OSD_MAP: | |
2158 | ceph_osdc_handle_map(osdc, msg); | |
2159 | break; | |
2160 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2161 | handle_reply(osdc, msg, con); |
f24e9980 | 2162 | break; |
a40c4f10 YS |
2163 | case CEPH_MSG_WATCH_NOTIFY: |
2164 | handle_watch_notify(osdc, msg); | |
2165 | break; | |
f24e9980 SW |
2166 | |
2167 | default: | |
2168 | pr_err("received unknown message type %d %s\n", type, | |
2169 | ceph_msg_type_name(type)); | |
2170 | } | |
4a32f93d | 2171 | out: |
f24e9980 SW |
2172 | ceph_msg_put(msg); |
2173 | } | |
2174 | ||
5b3a4db3 | 2175 | /* |
21b667f6 SW |
2176 | * lookup and return message for incoming reply. set up reply message |
2177 | * pages. | |
5b3a4db3 SW |
2178 | */ |
2179 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2180 | struct ceph_msg_header *hdr, |
2181 | int *skip) | |
f24e9980 SW |
2182 | { |
2183 | struct ceph_osd *osd = con->private; | |
2184 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2185 | struct ceph_msg *m; |
0547a9b3 | 2186 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2187 | int front = le32_to_cpu(hdr->front_len); |
2188 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2189 | u64 tid; |
f24e9980 | 2190 | |
0547a9b3 YS |
2191 | tid = le64_to_cpu(hdr->tid); |
2192 | mutex_lock(&osdc->request_mutex); | |
2193 | req = __lookup_request(osdc, tid); | |
2194 | if (!req) { | |
2195 | *skip = 1; | |
2196 | m = NULL; | |
756a16a5 SW |
2197 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2198 | osd->o_osd); | |
0547a9b3 YS |
2199 | goto out; |
2200 | } | |
c16e7869 | 2201 | |
ace6d3a9 | 2202 | if (req->r_reply->con) |
8921d114 | 2203 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2204 | req->r_reply, req->r_reply->con); |
2205 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2206 | |
c16e7869 SW |
2207 | if (front > req->r_reply->front.iov_len) { |
2208 | pr_warning("get_reply front %d > preallocated %d\n", | |
2209 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2210 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2211 | if (!m) |
c16e7869 SW |
2212 | goto out; |
2213 | ceph_msg_put(req->r_reply); | |
2214 | req->r_reply = m; | |
2215 | } | |
2216 | m = ceph_msg_get(req->r_reply); | |
2217 | ||
0547a9b3 | 2218 | if (data_len > 0) { |
0fff87ec AE |
2219 | struct ceph_osd_data *osd_data = &req->r_data_in; |
2220 | ||
2221 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
0fff87ec | 2222 | if (osd_data->pages && |
e0c59487 | 2223 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2224 | |
e0c59487 AE |
2225 | pr_warning("tid %lld reply has %d bytes " |
2226 | "we had only %llu bytes ready\n", | |
2227 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2228 | *skip = 1; |
2229 | ceph_msg_put(m); | |
2230 | m = NULL; | |
2231 | goto out; | |
2232 | } | |
2ac2b7a6 | 2233 | } |
0547a9b3 | 2234 | } |
5b3a4db3 | 2235 | *skip = 0; |
c16e7869 | 2236 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2237 | |
2238 | out: | |
2239 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2240 | return m; |
5b3a4db3 SW |
2241 | |
2242 | } | |
2243 | ||
2244 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2245 | struct ceph_msg_header *hdr, | |
2246 | int *skip) | |
2247 | { | |
2248 | struct ceph_osd *osd = con->private; | |
2249 | int type = le16_to_cpu(hdr->type); | |
2250 | int front = le32_to_cpu(hdr->front_len); | |
2251 | ||
1c20f2d2 | 2252 | *skip = 0; |
5b3a4db3 SW |
2253 | switch (type) { |
2254 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2255 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2256 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2257 | case CEPH_MSG_OSD_OPREPLY: |
2258 | return get_reply(con, hdr, skip); | |
2259 | default: | |
2260 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2261 | osd->o_osd); | |
2262 | *skip = 1; | |
2263 | return NULL; | |
2264 | } | |
f24e9980 SW |
2265 | } |
2266 | ||
2267 | /* | |
2268 | * Wrappers to refcount containing ceph_osd struct | |
2269 | */ | |
2270 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2271 | { | |
2272 | struct ceph_osd *osd = con->private; | |
2273 | if (get_osd(osd)) | |
2274 | return con; | |
2275 | return NULL; | |
2276 | } | |
2277 | ||
2278 | static void put_osd_con(struct ceph_connection *con) | |
2279 | { | |
2280 | struct ceph_osd *osd = con->private; | |
2281 | put_osd(osd); | |
2282 | } | |
2283 | ||
4e7a5dcd SW |
2284 | /* |
2285 | * authentication | |
2286 | */ | |
a3530df3 AE |
2287 | /* |
2288 | * Note: returned pointer is the address of a structure that's | |
2289 | * managed separately. Caller must *not* attempt to free it. | |
2290 | */ | |
2291 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2292 | int *proto, int force_new) |
4e7a5dcd SW |
2293 | { |
2294 | struct ceph_osd *o = con->private; | |
2295 | struct ceph_osd_client *osdc = o->o_osdc; | |
2296 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2297 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2298 | |
74f1869f | 2299 | if (force_new && auth->authorizer) { |
27859f97 | 2300 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2301 | auth->authorizer = NULL; |
2302 | } | |
27859f97 SW |
2303 | if (!auth->authorizer) { |
2304 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2305 | auth); | |
4e7a5dcd | 2306 | if (ret) |
a3530df3 | 2307 | return ERR_PTR(ret); |
27859f97 SW |
2308 | } else { |
2309 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2310 | auth); |
2311 | if (ret) | |
2312 | return ERR_PTR(ret); | |
4e7a5dcd | 2313 | } |
4e7a5dcd | 2314 | *proto = ac->protocol; |
74f1869f | 2315 | |
a3530df3 | 2316 | return auth; |
4e7a5dcd SW |
2317 | } |
2318 | ||
2319 | ||
2320 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2321 | { | |
2322 | struct ceph_osd *o = con->private; | |
2323 | struct ceph_osd_client *osdc = o->o_osdc; | |
2324 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2325 | ||
27859f97 | 2326 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2327 | } |
2328 | ||
9bd2e6f8 SW |
2329 | static int invalidate_authorizer(struct ceph_connection *con) |
2330 | { | |
2331 | struct ceph_osd *o = con->private; | |
2332 | struct ceph_osd_client *osdc = o->o_osdc; | |
2333 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2334 | ||
27859f97 | 2335 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2336 | return ceph_monc_validate_auth(&osdc->client->monc); |
2337 | } | |
4e7a5dcd | 2338 | |
9e32789f | 2339 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2340 | .get = get_osd_con, |
2341 | .put = put_osd_con, | |
2342 | .dispatch = dispatch, | |
4e7a5dcd SW |
2343 | .get_authorizer = get_authorizer, |
2344 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2345 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2346 | .alloc_msg = alloc_msg, |
81b024e7 | 2347 | .fault = osd_reset, |
f24e9980 | 2348 | }; |