]>
Commit | Line | Data |
---|---|---|
a4ce40a9 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
f24e9980 SW |
5 | #include <linux/err.h> |
6 | #include <linux/highmem.h> | |
7 | #include <linux/mm.h> | |
8 | #include <linux/pagemap.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
68b4476b YS |
11 | #ifdef CONFIG_BLOCK |
12 | #include <linux/bio.h> | |
13 | #endif | |
f24e9980 | 14 | |
3d14c5d2 YS |
15 | #include <linux/ceph/libceph.h> |
16 | #include <linux/ceph/osd_client.h> | |
17 | #include <linux/ceph/messenger.h> | |
18 | #include <linux/ceph/decode.h> | |
19 | #include <linux/ceph/auth.h> | |
20 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 21 | |
c16e7869 SW |
22 | #define OSD_OP_FRONT_LEN 4096 |
23 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 24 | |
5522ae0b AE |
25 | static struct kmem_cache *ceph_osd_request_cache; |
26 | ||
9e32789f | 27 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 28 | |
f9d25199 | 29 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 30 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
31 | static void __register_request(struct ceph_osd_client *osdc, |
32 | struct ceph_osd_request *req); | |
33 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
34 | struct ceph_osd_request *req); | |
56e925b6 SW |
35 | static void __send_request(struct ceph_osd_client *osdc, |
36 | struct ceph_osd_request *req); | |
f24e9980 SW |
37 | |
38 | /* | |
39 | * Implement client access to distributed object storage cluster. | |
40 | * | |
41 | * All data objects are stored within a cluster/cloud of OSDs, or | |
42 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
43 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
44 | * remote daemons serving up and coordinating consistent and safe | |
45 | * access to storage. | |
46 | * | |
47 | * Cluster membership and the mapping of data objects onto storage devices | |
48 | * are described by the osd map. | |
49 | * | |
50 | * We keep track of pending OSD requests (read, write), resubmit | |
51 | * requests to different OSDs when the cluster topology/data layout | |
52 | * change, or retry the affected requests when the communications | |
53 | * channel with an OSD is reset. | |
54 | */ | |
55 | ||
56 | /* | |
57 | * calculate the mapping of a file extent onto an object, and fill out the | |
58 | * request accordingly. shorten extent as necessary if it crosses an | |
59 | * object boundary. | |
60 | * | |
61 | * fill osd op in request message. | |
62 | */ | |
dbe0fc41 | 63 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 64 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 65 | { |
60e56f13 | 66 | u64 orig_len = *plen; |
d63b77f4 | 67 | int r; |
f24e9980 | 68 | |
60e56f13 | 69 | /* object extent? */ |
75d1c941 AE |
70 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
71 | objoff, objlen); | |
d63b77f4 SW |
72 | if (r < 0) |
73 | return r; | |
75d1c941 AE |
74 | if (*objlen < orig_len) { |
75 | *plen = *objlen; | |
60e56f13 AE |
76 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
77 | orig_len - *plen, off, *plen); | |
78 | } | |
79 | ||
75d1c941 | 80 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 81 | |
3ff5f385 | 82 | return 0; |
f24e9980 SW |
83 | } |
84 | ||
c54d47bf AE |
85 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
86 | { | |
87 | memset(osd_data, 0, sizeof (*osd_data)); | |
88 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
89 | } | |
90 | ||
a4ce40a9 | 91 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
92 | struct page **pages, u64 length, u32 alignment, |
93 | bool pages_from_pool, bool own_pages) | |
94 | { | |
95 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
96 | osd_data->pages = pages; | |
97 | osd_data->length = length; | |
98 | osd_data->alignment = alignment; | |
99 | osd_data->pages_from_pool = pages_from_pool; | |
100 | osd_data->own_pages = own_pages; | |
101 | } | |
43bfe5de | 102 | |
a4ce40a9 | 103 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
104 | struct ceph_pagelist *pagelist) |
105 | { | |
106 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
107 | osd_data->pagelist = pagelist; | |
108 | } | |
43bfe5de AE |
109 | |
110 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 111 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
112 | struct bio *bio, size_t bio_length) |
113 | { | |
114 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
115 | osd_data->bio = bio; | |
116 | osd_data->bio_length = bio_length; | |
117 | } | |
43bfe5de AE |
118 | #endif /* CONFIG_BLOCK */ |
119 | ||
863c7eb5 AE |
120 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
121 | ({ \ | |
122 | BUG_ON(whch >= (oreq)->r_num_ops); \ | |
123 | &(oreq)->r_ops[whch].typ.fld; \ | |
124 | }) | |
125 | ||
49719778 AE |
126 | static struct ceph_osd_data * |
127 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
128 | { | |
129 | BUG_ON(which >= osd_req->r_num_ops); | |
130 | ||
131 | return &osd_req->r_ops[which].raw_data_in; | |
132 | } | |
133 | ||
a4ce40a9 AE |
134 | struct ceph_osd_data * |
135 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 136 | unsigned int which) |
a4ce40a9 | 137 | { |
863c7eb5 | 138 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
139 | } |
140 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
141 | ||
a4ce40a9 AE |
142 | struct ceph_osd_data * |
143 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
144 | unsigned int which) | |
145 | { | |
863c7eb5 | 146 | return osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
147 | } |
148 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
149 | ||
49719778 AE |
150 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
151 | unsigned int which, struct page **pages, | |
152 | u64 length, u32 alignment, | |
153 | bool pages_from_pool, bool own_pages) | |
154 | { | |
155 | struct ceph_osd_data *osd_data; | |
156 | ||
157 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
158 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
159 | pages_from_pool, own_pages); | |
160 | } | |
161 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
162 | ||
a4ce40a9 | 163 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
164 | unsigned int which, struct page **pages, |
165 | u64 length, u32 alignment, | |
a4ce40a9 AE |
166 | bool pages_from_pool, bool own_pages) |
167 | { | |
168 | struct ceph_osd_data *osd_data; | |
169 | ||
863c7eb5 | 170 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
171 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
172 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
173 | } |
174 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
175 | ||
176 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 177 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
178 | { |
179 | struct ceph_osd_data *osd_data; | |
180 | ||
863c7eb5 | 181 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 182 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
183 | } |
184 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
185 | ||
186 | #ifdef CONFIG_BLOCK | |
187 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 188 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
189 | { |
190 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
191 | |
192 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 193 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
194 | } |
195 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
196 | #endif /* CONFIG_BLOCK */ | |
197 | ||
198 | static void osd_req_op_cls_request_info_pagelist( | |
199 | struct ceph_osd_request *osd_req, | |
200 | unsigned int which, struct ceph_pagelist *pagelist) | |
201 | { | |
202 | struct ceph_osd_data *osd_data; | |
203 | ||
863c7eb5 | 204 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 205 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
206 | } |
207 | ||
04017e29 AE |
208 | void osd_req_op_cls_request_data_pagelist( |
209 | struct ceph_osd_request *osd_req, | |
210 | unsigned int which, struct ceph_pagelist *pagelist) | |
211 | { | |
212 | struct ceph_osd_data *osd_data; | |
213 | ||
863c7eb5 | 214 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
215 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
216 | } | |
217 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
218 | ||
6c57b554 AE |
219 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
220 | unsigned int which, struct page **pages, u64 length, | |
221 | u32 alignment, bool pages_from_pool, bool own_pages) | |
222 | { | |
223 | struct ceph_osd_data *osd_data; | |
224 | ||
225 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
226 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
227 | pages_from_pool, own_pages); | |
228 | } | |
229 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
230 | ||
a4ce40a9 AE |
231 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
232 | unsigned int which, struct page **pages, u64 length, | |
233 | u32 alignment, bool pages_from_pool, bool own_pages) | |
234 | { | |
235 | struct ceph_osd_data *osd_data; | |
236 | ||
863c7eb5 | 237 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
238 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
239 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
240 | } |
241 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
242 | ||
23c08a9c AE |
243 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
244 | { | |
245 | switch (osd_data->type) { | |
246 | case CEPH_OSD_DATA_TYPE_NONE: | |
247 | return 0; | |
248 | case CEPH_OSD_DATA_TYPE_PAGES: | |
249 | return osd_data->length; | |
250 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
251 | return (u64)osd_data->pagelist->length; | |
252 | #ifdef CONFIG_BLOCK | |
253 | case CEPH_OSD_DATA_TYPE_BIO: | |
254 | return (u64)osd_data->bio_length; | |
255 | #endif /* CONFIG_BLOCK */ | |
256 | default: | |
257 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
258 | return 0; | |
259 | } | |
260 | } | |
261 | ||
c54d47bf AE |
262 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
263 | { | |
5476492f | 264 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
265 | int num_pages; |
266 | ||
267 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
268 | (u64)osd_data->length); | |
269 | ceph_release_page_vector(osd_data->pages, num_pages); | |
270 | } | |
5476492f AE |
271 | ceph_osd_data_init(osd_data); |
272 | } | |
273 | ||
274 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
275 | unsigned int which) | |
276 | { | |
277 | struct ceph_osd_req_op *op; | |
278 | ||
279 | BUG_ON(which >= osd_req->r_num_ops); | |
280 | op = &osd_req->r_ops[which]; | |
281 | ||
282 | switch (op->op) { | |
283 | case CEPH_OSD_OP_READ: | |
284 | case CEPH_OSD_OP_WRITE: | |
285 | ceph_osd_data_release(&op->extent.osd_data); | |
286 | break; | |
287 | case CEPH_OSD_OP_CALL: | |
288 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 289 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
290 | ceph_osd_data_release(&op->cls.response_data); |
291 | break; | |
292 | default: | |
293 | break; | |
294 | } | |
c54d47bf AE |
295 | } |
296 | ||
f24e9980 SW |
297 | /* |
298 | * requests | |
299 | */ | |
415e49a9 | 300 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 301 | { |
c54d47bf | 302 | struct ceph_osd_request *req; |
5476492f | 303 | unsigned int which; |
415e49a9 | 304 | |
c54d47bf | 305 | req = container_of(kref, struct ceph_osd_request, r_kref); |
415e49a9 SW |
306 | if (req->r_request) |
307 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 308 | if (req->r_reply) { |
8921d114 | 309 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 310 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 311 | } |
0fff87ec | 312 | |
5476492f AE |
313 | for (which = 0; which < req->r_num_ops; which++) |
314 | osd_req_op_data_release(req, which); | |
0fff87ec | 315 | |
415e49a9 SW |
316 | ceph_put_snap_context(req->r_snapc); |
317 | if (req->r_mempool) | |
318 | mempool_free(req, req->r_osdc->req_mempool); | |
319 | else | |
5522ae0b AE |
320 | kmem_cache_free(ceph_osd_request_cache, req); |
321 | ||
f24e9980 | 322 | } |
3d14c5d2 | 323 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 324 | |
3499e8a5 | 325 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 326 | struct ceph_snap_context *snapc, |
1b83bef2 | 327 | unsigned int num_ops, |
3499e8a5 | 328 | bool use_mempool, |
54a54007 | 329 | gfp_t gfp_flags) |
f24e9980 SW |
330 | { |
331 | struct ceph_osd_request *req; | |
332 | struct ceph_msg *msg; | |
1b83bef2 SW |
333 | size_t msg_size; |
334 | ||
79528734 AE |
335 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
336 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
337 | ||
1b83bef2 SW |
338 | msg_size = 4 + 4 + 8 + 8 + 4+8; |
339 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
340 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
2d0ebc5d | 341 | msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ |
1b83bef2 SW |
342 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); |
343 | msg_size += 8; /* snapid */ | |
344 | msg_size += 8; /* snap_seq */ | |
345 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
346 | msg_size += 4; | |
f24e9980 SW |
347 | |
348 | if (use_mempool) { | |
3499e8a5 | 349 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
350 | memset(req, 0, sizeof(*req)); |
351 | } else { | |
5522ae0b | 352 | req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); |
f24e9980 SW |
353 | } |
354 | if (req == NULL) | |
a79832f2 | 355 | return NULL; |
f24e9980 | 356 | |
f24e9980 SW |
357 | req->r_osdc = osdc; |
358 | req->r_mempool = use_mempool; | |
79528734 | 359 | req->r_num_ops = num_ops; |
68b4476b | 360 | |
415e49a9 | 361 | kref_init(&req->r_kref); |
f24e9980 SW |
362 | init_completion(&req->r_completion); |
363 | init_completion(&req->r_safe_completion); | |
a978fa20 | 364 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 365 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
366 | INIT_LIST_HEAD(&req->r_linger_item); |
367 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 368 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
369 | INIT_LIST_HEAD(&req->r_osd_item); |
370 | ||
22116525 ID |
371 | req->r_oloc.pool = -1; |
372 | ||
c16e7869 SW |
373 | /* create reply message */ |
374 | if (use_mempool) | |
375 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
376 | else | |
377 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 378 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 379 | if (!msg) { |
c16e7869 | 380 | ceph_osdc_put_request(req); |
a79832f2 | 381 | return NULL; |
c16e7869 SW |
382 | } |
383 | req->r_reply = msg; | |
384 | ||
385 | /* create request message; allow space for oid */ | |
f24e9980 | 386 | if (use_mempool) |
8f3bc053 | 387 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 388 | else |
b61c2763 | 389 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 390 | if (!msg) { |
f24e9980 | 391 | ceph_osdc_put_request(req); |
a79832f2 | 392 | return NULL; |
f24e9980 | 393 | } |
68b4476b | 394 | |
f24e9980 | 395 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
396 | |
397 | req->r_request = msg; | |
3499e8a5 YS |
398 | |
399 | return req; | |
400 | } | |
3d14c5d2 | 401 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 402 | |
a8dd0a37 | 403 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 404 | { |
a8dd0a37 | 405 | switch (opcode) { |
68b4476b | 406 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 407 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
408 | case CEPH_OSD_OP_MAPEXT: |
409 | case CEPH_OSD_OP_MASKTRUNC: | |
410 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 411 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 412 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 413 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 414 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
415 | case CEPH_OSD_OP_WRITEFULL: |
416 | case CEPH_OSD_OP_TRUNCATE: | |
417 | case CEPH_OSD_OP_ZERO: | |
418 | case CEPH_OSD_OP_DELETE: | |
419 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 420 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
421 | case CEPH_OSD_OP_SETTRUNC: |
422 | case CEPH_OSD_OP_TRIMTRUNC: | |
423 | case CEPH_OSD_OP_TMAPUP: | |
424 | case CEPH_OSD_OP_TMAPPUT: | |
425 | case CEPH_OSD_OP_TMAPGET: | |
426 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 427 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 428 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
429 | case CEPH_OSD_OP_OMAPGETKEYS: |
430 | case CEPH_OSD_OP_OMAPGETVALS: | |
431 | case CEPH_OSD_OP_OMAPGETHEADER: | |
432 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
433 | case CEPH_OSD_OP_OMAPSETVALS: |
434 | case CEPH_OSD_OP_OMAPSETHEADER: | |
435 | case CEPH_OSD_OP_OMAPCLEAR: | |
436 | case CEPH_OSD_OP_OMAPRMKEYS: | |
437 | case CEPH_OSD_OP_OMAP_CMP: | |
438 | case CEPH_OSD_OP_CLONERANGE: | |
439 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
440 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 441 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 442 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
443 | case CEPH_OSD_OP_CMPXATTR: |
444 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
445 | case CEPH_OSD_OP_SETXATTRS: |
446 | case CEPH_OSD_OP_RESETXATTRS: | |
447 | case CEPH_OSD_OP_RMXATTR: | |
448 | case CEPH_OSD_OP_PULL: | |
449 | case CEPH_OSD_OP_PUSH: | |
450 | case CEPH_OSD_OP_BALANCEREADS: | |
451 | case CEPH_OSD_OP_UNBALANCEREADS: | |
452 | case CEPH_OSD_OP_SCRUB: | |
453 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
454 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
455 | case CEPH_OSD_OP_SCRUB_STOP: | |
456 | case CEPH_OSD_OP_SCRUB_MAP: | |
457 | case CEPH_OSD_OP_WRLOCK: | |
458 | case CEPH_OSD_OP_WRUNLOCK: | |
459 | case CEPH_OSD_OP_RDLOCK: | |
460 | case CEPH_OSD_OP_RDUNLOCK: | |
461 | case CEPH_OSD_OP_UPLOCK: | |
462 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 463 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
464 | case CEPH_OSD_OP_PGLS: |
465 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
466 | return true; |
467 | default: | |
468 | return false; | |
469 | } | |
470 | } | |
471 | ||
33803f33 AE |
472 | /* |
473 | * This is an osd op init function for opcodes that have no data or | |
474 | * other information associated with them. It also serves as a | |
475 | * common init routine for all the other init functions, below. | |
476 | */ | |
c99d2d4a | 477 | static struct ceph_osd_req_op * |
49719778 | 478 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
c99d2d4a | 479 | u16 opcode) |
33803f33 | 480 | { |
c99d2d4a AE |
481 | struct ceph_osd_req_op *op; |
482 | ||
483 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
484 | BUG_ON(!osd_req_opcode_valid(opcode)); |
485 | ||
c99d2d4a | 486 | op = &osd_req->r_ops[which]; |
33803f33 | 487 | memset(op, 0, sizeof (*op)); |
33803f33 | 488 | op->op = opcode; |
c99d2d4a AE |
489 | |
490 | return op; | |
33803f33 AE |
491 | } |
492 | ||
49719778 AE |
493 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
494 | unsigned int which, u16 opcode) | |
495 | { | |
496 | (void)_osd_req_op_init(osd_req, which, opcode); | |
497 | } | |
498 | EXPORT_SYMBOL(osd_req_op_init); | |
499 | ||
c99d2d4a AE |
500 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
501 | unsigned int which, u16 opcode, | |
33803f33 AE |
502 | u64 offset, u64 length, |
503 | u64 truncate_size, u32 truncate_seq) | |
504 | { | |
49719778 | 505 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 AE |
506 | size_t payload_len = 0; |
507 | ||
ad7a60de LW |
508 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
509 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
510 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 511 | |
33803f33 AE |
512 | op->extent.offset = offset; |
513 | op->extent.length = length; | |
514 | op->extent.truncate_size = truncate_size; | |
515 | op->extent.truncate_seq = truncate_seq; | |
516 | if (opcode == CEPH_OSD_OP_WRITE) | |
517 | payload_len += length; | |
518 | ||
519 | op->payload_len = payload_len; | |
520 | } | |
521 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
522 | ||
c99d2d4a AE |
523 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
524 | unsigned int which, u64 length) | |
e5975c7c | 525 | { |
c99d2d4a AE |
526 | struct ceph_osd_req_op *op; |
527 | u64 previous; | |
528 | ||
529 | BUG_ON(which >= osd_req->r_num_ops); | |
530 | op = &osd_req->r_ops[which]; | |
531 | previous = op->extent.length; | |
e5975c7c AE |
532 | |
533 | if (length == previous) | |
534 | return; /* Nothing to do */ | |
535 | BUG_ON(length > previous); | |
536 | ||
537 | op->extent.length = length; | |
538 | op->payload_len -= previous - length; | |
539 | } | |
540 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
541 | ||
c99d2d4a | 542 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 543 | u16 opcode, const char *class, const char *method) |
33803f33 | 544 | { |
49719778 | 545 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
5f562df5 | 546 | struct ceph_pagelist *pagelist; |
33803f33 AE |
547 | size_t payload_len = 0; |
548 | size_t size; | |
549 | ||
550 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
551 | ||
5f562df5 AE |
552 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
553 | BUG_ON(!pagelist); | |
554 | ceph_pagelist_init(pagelist); | |
555 | ||
33803f33 AE |
556 | op->cls.class_name = class; |
557 | size = strlen(class); | |
558 | BUG_ON(size > (size_t) U8_MAX); | |
559 | op->cls.class_len = size; | |
5f562df5 | 560 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
561 | payload_len += size; |
562 | ||
563 | op->cls.method_name = method; | |
564 | size = strlen(method); | |
565 | BUG_ON(size > (size_t) U8_MAX); | |
566 | op->cls.method_len = size; | |
5f562df5 | 567 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
568 | payload_len += size; |
569 | ||
a4ce40a9 | 570 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 571 | |
33803f33 AE |
572 | op->cls.argc = 0; /* currently unused */ |
573 | ||
574 | op->payload_len = payload_len; | |
575 | } | |
576 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 577 | |
c99d2d4a AE |
578 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
579 | unsigned int which, u16 opcode, | |
33803f33 AE |
580 | u64 cookie, u64 version, int flag) |
581 | { | |
49719778 | 582 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 | 583 | |
c99d2d4a | 584 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
585 | |
586 | op->watch.cookie = cookie; | |
9ef1ee5a | 587 | op->watch.ver = version; |
33803f33 | 588 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 589 | op->watch.flag = (u8)1; |
33803f33 AE |
590 | } |
591 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
592 | ||
90af3602 | 593 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
594 | struct ceph_osd_data *osd_data) |
595 | { | |
596 | u64 length = ceph_osd_data_length(osd_data); | |
597 | ||
598 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
599 | BUG_ON(length > (u64) SIZE_MAX); | |
600 | if (length) | |
90af3602 | 601 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
602 | length, osd_data->alignment); |
603 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
604 | BUG_ON(!length); | |
90af3602 | 605 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
606 | #ifdef CONFIG_BLOCK |
607 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 608 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
609 | #endif |
610 | } else { | |
611 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
612 | } | |
613 | } | |
614 | ||
a8dd0a37 | 615 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 616 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 617 | { |
79528734 | 618 | struct ceph_osd_req_op *src; |
04017e29 | 619 | struct ceph_osd_data *osd_data; |
54d50649 | 620 | u64 request_data_len = 0; |
04017e29 | 621 | u64 data_length; |
a8dd0a37 | 622 | |
79528734 AE |
623 | BUG_ON(which >= req->r_num_ops); |
624 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
625 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
626 | pr_err("unrecognized osd opcode %d\n", src->op); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | switch (src->op) { | |
632 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
633 | osd_data = &src->raw_data_in; |
634 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
635 | break; |
636 | case CEPH_OSD_OP_READ: | |
637 | case CEPH_OSD_OP_WRITE: | |
ad7a60de LW |
638 | case CEPH_OSD_OP_ZERO: |
639 | case CEPH_OSD_OP_DELETE: | |
640 | case CEPH_OSD_OP_TRUNCATE: | |
a8dd0a37 | 641 | if (src->op == CEPH_OSD_OP_WRITE) |
54d50649 | 642 | request_data_len = src->extent.length; |
a8dd0a37 AE |
643 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
644 | dst->extent.length = cpu_to_le64(src->extent.length); | |
645 | dst->extent.truncate_size = | |
646 | cpu_to_le64(src->extent.truncate_size); | |
647 | dst->extent.truncate_seq = | |
648 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 649 | osd_data = &src->extent.osd_data; |
5476492f | 650 | if (src->op == CEPH_OSD_OP_WRITE) |
04017e29 | 651 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 652 | else |
04017e29 | 653 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
654 | break; |
655 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
656 | dst->cls.class_len = src->cls.class_len; |
657 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
658 | osd_data = &src->cls.request_info; |
659 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
660 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
661 | request_data_len = osd_data->pagelist->length; | |
662 | ||
663 | osd_data = &src->cls.request_data; | |
664 | data_length = ceph_osd_data_length(osd_data); | |
665 | if (data_length) { | |
666 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
667 | dst->cls.indata_len = cpu_to_le32(data_length); | |
668 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
669 | src->payload_len += data_length; | |
670 | request_data_len += data_length; | |
671 | } | |
672 | osd_data = &src->cls.response_data; | |
673 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
674 | break; |
675 | case CEPH_OSD_OP_STARTSYNC: | |
676 | break; | |
677 | case CEPH_OSD_OP_NOTIFY_ACK: | |
678 | case CEPH_OSD_OP_WATCH: | |
679 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
680 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
681 | dst->watch.flag = src->watch.flag; | |
682 | break; | |
683 | default: | |
4c46459c | 684 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 685 | ceph_osd_op_name(src->op)); |
4c46459c | 686 | WARN_ON(1); |
a8dd0a37 AE |
687 | |
688 | return 0; | |
68b4476b | 689 | } |
a8dd0a37 | 690 | dst->op = cpu_to_le16(src->op); |
68b4476b | 691 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 692 | |
54d50649 | 693 | return request_data_len; |
68b4476b YS |
694 | } |
695 | ||
3499e8a5 YS |
696 | /* |
697 | * build new request AND message, calculate layout, and adjust file | |
698 | * extent as needed. | |
699 | * | |
700 | * if the file was recently truncated, we include information about its | |
701 | * old and new size so that the object can be updated appropriately. (we | |
702 | * avoid synchronously deleting truncated objects because it's slow.) | |
703 | * | |
704 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
705 | * data quickly. | |
706 | */ | |
707 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
708 | struct ceph_file_layout *layout, | |
709 | struct ceph_vino vino, | |
acead002 | 710 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
711 | int opcode, int flags, |
712 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
713 | u32 truncate_seq, |
714 | u64 truncate_size, | |
153e5167 | 715 | bool use_mempool) |
3499e8a5 | 716 | { |
68b4476b | 717 | struct ceph_osd_request *req; |
75d1c941 AE |
718 | u64 objnum = 0; |
719 | u64 objoff = 0; | |
720 | u64 objlen = 0; | |
d18d1e28 AE |
721 | u32 object_size; |
722 | u64 object_base; | |
6816282d | 723 | int r; |
68b4476b | 724 | |
ad7a60de LW |
725 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
726 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
727 | opcode != CEPH_OSD_OP_TRUNCATE); | |
68b4476b | 728 | |
acead002 | 729 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 730 | GFP_NOFS); |
4ad12621 | 731 | if (!req) |
6816282d | 732 | return ERR_PTR(-ENOMEM); |
79528734 | 733 | |
d178a9e7 | 734 | req->r_flags = flags; |
3499e8a5 YS |
735 | |
736 | /* calculate max write size */ | |
a19dadfb | 737 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
738 | if (r < 0) { |
739 | ceph_osdc_put_request(req); | |
6816282d | 740 | return ERR_PTR(r); |
3ff5f385 | 741 | } |
a19dadfb | 742 | |
d18d1e28 AE |
743 | object_size = le32_to_cpu(layout->fl_object_size); |
744 | object_base = off - objoff; | |
ccca4e37 YZ |
745 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { |
746 | if (truncate_size <= object_base) { | |
747 | truncate_size = 0; | |
748 | } else { | |
749 | truncate_size -= object_base; | |
750 | if (truncate_size > object_size) | |
751 | truncate_size = object_size; | |
752 | } | |
a19dadfb | 753 | } |
d18d1e28 | 754 | |
c99d2d4a | 755 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 756 | truncate_size, truncate_seq); |
8c042b0d | 757 | |
acead002 AE |
758 | /* |
759 | * A second op in the ops array means the caller wants to | |
760 | * also issue a include a 'startsync' command so that the | |
761 | * osd will flush data quickly. | |
762 | */ | |
763 | if (num_ops > 1) | |
c99d2d4a | 764 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 765 | |
22116525 | 766 | req->r_oloc.pool = ceph_file_layout_pg_pool(*layout); |
3499e8a5 | 767 | |
75d1c941 AE |
768 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
769 | vino.ino, objnum); | |
dbe0fc41 AE |
770 | req->r_oid_len = strlen(req->r_oid); |
771 | ||
f24e9980 SW |
772 | return req; |
773 | } | |
3d14c5d2 | 774 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
775 | |
776 | /* | |
777 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
778 | */ | |
779 | static void __insert_request(struct ceph_osd_client *osdc, | |
780 | struct ceph_osd_request *new) | |
781 | { | |
782 | struct rb_node **p = &osdc->requests.rb_node; | |
783 | struct rb_node *parent = NULL; | |
784 | struct ceph_osd_request *req = NULL; | |
785 | ||
786 | while (*p) { | |
787 | parent = *p; | |
788 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
789 | if (new->r_tid < req->r_tid) | |
790 | p = &(*p)->rb_left; | |
791 | else if (new->r_tid > req->r_tid) | |
792 | p = &(*p)->rb_right; | |
793 | else | |
794 | BUG(); | |
795 | } | |
796 | ||
797 | rb_link_node(&new->r_node, parent, p); | |
798 | rb_insert_color(&new->r_node, &osdc->requests); | |
799 | } | |
800 | ||
801 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
802 | u64 tid) | |
803 | { | |
804 | struct ceph_osd_request *req; | |
805 | struct rb_node *n = osdc->requests.rb_node; | |
806 | ||
807 | while (n) { | |
808 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
809 | if (tid < req->r_tid) | |
810 | n = n->rb_left; | |
811 | else if (tid > req->r_tid) | |
812 | n = n->rb_right; | |
813 | else | |
814 | return req; | |
815 | } | |
816 | return NULL; | |
817 | } | |
818 | ||
819 | static struct ceph_osd_request * | |
820 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
821 | u64 tid) | |
822 | { | |
823 | struct ceph_osd_request *req; | |
824 | struct rb_node *n = osdc->requests.rb_node; | |
825 | ||
826 | while (n) { | |
827 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
828 | if (tid < req->r_tid) { | |
829 | if (!n->rb_left) | |
830 | return req; | |
831 | n = n->rb_left; | |
832 | } else if (tid > req->r_tid) { | |
833 | n = n->rb_right; | |
834 | } else { | |
835 | return req; | |
836 | } | |
837 | } | |
838 | return NULL; | |
839 | } | |
840 | ||
6f6c7006 SW |
841 | /* |
842 | * Resubmit requests pending on the given osd. | |
843 | */ | |
844 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
845 | struct ceph_osd *osd) | |
846 | { | |
a40c4f10 | 847 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 848 | LIST_HEAD(resend); |
6f6c7006 SW |
849 | int err; |
850 | ||
851 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
852 | err = __reset_osd(osdc, osd); | |
685a7555 | 853 | if (err) |
6f6c7006 | 854 | return; |
e02493c0 AE |
855 | /* |
856 | * Build up a list of requests to resend by traversing the | |
857 | * osd's list of requests. Requests for a given object are | |
858 | * sent in tid order, and that is also the order they're | |
859 | * kept on this list. Therefore all requests that are in | |
860 | * flight will be found first, followed by all requests that | |
861 | * have not yet been sent. And to resend requests while | |
862 | * preserving this order we will want to put any sent | |
863 | * requests back on the front of the osd client's unsent | |
864 | * list. | |
865 | * | |
866 | * So we build a separate ordered list of already-sent | |
867 | * requests for the affected osd and splice it onto the | |
868 | * front of the osd client's unsent list. Once we've seen a | |
869 | * request that has not yet been sent we're done. Those | |
870 | * requests are already sitting right where they belong. | |
871 | */ | |
6f6c7006 | 872 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
873 | if (!req->r_sent) |
874 | break; | |
875 | list_move_tail(&req->r_req_lru_item, &resend); | |
876 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 877 | osd->o_osd); |
a40c4f10 YS |
878 | if (!req->r_linger) |
879 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
880 | } | |
e02493c0 | 881 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 882 | |
e02493c0 AE |
883 | /* |
884 | * Linger requests are re-registered before sending, which | |
885 | * sets up a new tid for each. We add them to the unsent | |
886 | * list at the end to keep things in tid order. | |
887 | */ | |
a40c4f10 YS |
888 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
889 | r_linger_osd) { | |
77f38e0e SW |
890 | /* |
891 | * reregister request prior to unregistering linger so | |
892 | * that r_osd is preserved. | |
893 | */ | |
894 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 895 | __register_request(osdc, req); |
e02493c0 | 896 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 897 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 898 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
899 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
900 | osd->o_osd); | |
6f6c7006 SW |
901 | } |
902 | } | |
903 | ||
f24e9980 | 904 | /* |
81b024e7 | 905 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
906 | */ |
907 | static void osd_reset(struct ceph_connection *con) | |
908 | { | |
909 | struct ceph_osd *osd = con->private; | |
910 | struct ceph_osd_client *osdc; | |
911 | ||
912 | if (!osd) | |
913 | return; | |
914 | dout("osd_reset osd%d\n", osd->o_osd); | |
915 | osdc = osd->o_osdc; | |
f24e9980 | 916 | down_read(&osdc->map_sem); |
83aff95e SW |
917 | mutex_lock(&osdc->request_mutex); |
918 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 919 | __send_queued(osdc); |
83aff95e | 920 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
921 | up_read(&osdc->map_sem); |
922 | } | |
923 | ||
924 | /* | |
925 | * Track open sessions with osds. | |
926 | */ | |
e10006f8 | 927 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
928 | { |
929 | struct ceph_osd *osd; | |
930 | ||
931 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
932 | if (!osd) | |
933 | return NULL; | |
934 | ||
935 | atomic_set(&osd->o_ref, 1); | |
936 | osd->o_osdc = osdc; | |
e10006f8 | 937 | osd->o_osd = onum; |
f407731d | 938 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 939 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 940 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 941 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
942 | osd->o_incarnation = 1; |
943 | ||
b7a9e5dd | 944 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 945 | |
422d2cb8 | 946 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
947 | return osd; |
948 | } | |
949 | ||
950 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
951 | { | |
952 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
953 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
954 | atomic_read(&osd->o_ref)); | |
955 | return osd; | |
956 | } else { | |
957 | dout("get_osd %p FAIL\n", osd); | |
958 | return NULL; | |
959 | } | |
960 | } | |
961 | ||
962 | static void put_osd(struct ceph_osd *osd) | |
963 | { | |
964 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
965 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 966 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
967 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
968 | ||
27859f97 | 969 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 970 | kfree(osd); |
79494d1b | 971 | } |
f24e9980 SW |
972 | } |
973 | ||
974 | /* | |
975 | * remove an osd from our map | |
976 | */ | |
f5a2041b | 977 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 978 | { |
f5a2041b | 979 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
980 | BUG_ON(!list_empty(&osd->o_requests)); |
981 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 982 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
983 | ceph_con_close(&osd->o_con); |
984 | put_osd(osd); | |
985 | } | |
986 | ||
aca420bc SW |
987 | static void remove_all_osds(struct ceph_osd_client *osdc) |
988 | { | |
048a9d2d | 989 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
990 | mutex_lock(&osdc->request_mutex); |
991 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
992 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
993 | struct ceph_osd, o_node); | |
994 | __remove_osd(osdc, osd); | |
995 | } | |
996 | mutex_unlock(&osdc->request_mutex); | |
997 | } | |
998 | ||
f5a2041b YS |
999 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
1000 | struct ceph_osd *osd) | |
1001 | { | |
1002 | dout("__move_osd_to_lru %p\n", osd); | |
1003 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
1004 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 1005 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
1006 | } |
1007 | ||
1008 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
1009 | { | |
1010 | dout("__remove_osd_from_lru %p\n", osd); | |
1011 | if (!list_empty(&osd->o_osd_lru)) | |
1012 | list_del_init(&osd->o_osd_lru); | |
1013 | } | |
1014 | ||
aca420bc | 1015 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
1016 | { |
1017 | struct ceph_osd *osd, *nosd; | |
1018 | ||
1019 | dout("__remove_old_osds %p\n", osdc); | |
1020 | mutex_lock(&osdc->request_mutex); | |
1021 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 1022 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
1023 | break; |
1024 | __remove_osd(osdc, osd); | |
1025 | } | |
1026 | mutex_unlock(&osdc->request_mutex); | |
1027 | } | |
1028 | ||
f24e9980 SW |
1029 | /* |
1030 | * reset osd connect | |
1031 | */ | |
f5a2041b | 1032 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1033 | { |
c3acb181 | 1034 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1035 | |
f5a2041b | 1036 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1037 | if (list_empty(&osd->o_requests) && |
1038 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 1039 | __remove_osd(osdc, osd); |
c3acb181 AE |
1040 | |
1041 | return -ENODEV; | |
1042 | } | |
1043 | ||
1044 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1045 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1046 | !ceph_con_opened(&osd->o_con)) { | |
1047 | struct ceph_osd_request *req; | |
1048 | ||
0b4af2e8 ID |
1049 | dout("osd addr hasn't changed and connection never opened, " |
1050 | "letting msgr retry\n"); | |
87b315a5 SW |
1051 | /* touch each r_stamp for handle_timeout()'s benfit */ |
1052 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1053 | req->r_stamp = jiffies; | |
c3acb181 AE |
1054 | |
1055 | return -EAGAIN; | |
f24e9980 | 1056 | } |
c3acb181 AE |
1057 | |
1058 | ceph_con_close(&osd->o_con); | |
1059 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1060 | osd->o_incarnation++; | |
1061 | ||
1062 | return 0; | |
f24e9980 SW |
1063 | } |
1064 | ||
1065 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1066 | { | |
1067 | struct rb_node **p = &osdc->osds.rb_node; | |
1068 | struct rb_node *parent = NULL; | |
1069 | struct ceph_osd *osd = NULL; | |
1070 | ||
aca420bc | 1071 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1072 | while (*p) { |
1073 | parent = *p; | |
1074 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1075 | if (new->o_osd < osd->o_osd) | |
1076 | p = &(*p)->rb_left; | |
1077 | else if (new->o_osd > osd->o_osd) | |
1078 | p = &(*p)->rb_right; | |
1079 | else | |
1080 | BUG(); | |
1081 | } | |
1082 | ||
1083 | rb_link_node(&new->o_node, parent, p); | |
1084 | rb_insert_color(&new->o_node, &osdc->osds); | |
1085 | } | |
1086 | ||
1087 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1088 | { | |
1089 | struct ceph_osd *osd; | |
1090 | struct rb_node *n = osdc->osds.rb_node; | |
1091 | ||
1092 | while (n) { | |
1093 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1094 | if (o < osd->o_osd) | |
1095 | n = n->rb_left; | |
1096 | else if (o > osd->o_osd) | |
1097 | n = n->rb_right; | |
1098 | else | |
1099 | return osd; | |
1100 | } | |
1101 | return NULL; | |
1102 | } | |
1103 | ||
422d2cb8 YS |
1104 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1105 | { | |
1106 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 1107 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
1108 | } |
1109 | ||
1110 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1111 | { | |
1112 | cancel_delayed_work(&osdc->timeout_work); | |
1113 | } | |
f24e9980 SW |
1114 | |
1115 | /* | |
1116 | * Register request, assign tid. If this is the first request, set up | |
1117 | * the timeout event. | |
1118 | */ | |
a40c4f10 YS |
1119 | static void __register_request(struct ceph_osd_client *osdc, |
1120 | struct ceph_osd_request *req) | |
f24e9980 | 1121 | { |
f24e9980 | 1122 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1123 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1124 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1125 | __insert_request(osdc, req); |
1126 | ceph_osdc_get_request(req); | |
1127 | osdc->num_requests++; | |
f24e9980 | 1128 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1129 | dout(" first request, scheduling timeout\n"); |
1130 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1131 | } |
a40c4f10 YS |
1132 | } |
1133 | ||
f24e9980 SW |
1134 | /* |
1135 | * called under osdc->request_mutex | |
1136 | */ | |
1137 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1138 | struct ceph_osd_request *req) | |
1139 | { | |
35f9f8a0 SW |
1140 | if (RB_EMPTY_NODE(&req->r_node)) { |
1141 | dout("__unregister_request %p tid %lld not registered\n", | |
1142 | req, req->r_tid); | |
1143 | return; | |
1144 | } | |
1145 | ||
f24e9980 SW |
1146 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1147 | rb_erase(&req->r_node, &osdc->requests); | |
1148 | osdc->num_requests--; | |
1149 | ||
0ba6478d SW |
1150 | if (req->r_osd) { |
1151 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1152 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1153 | |
1154 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
1155 | if (list_empty(&req->r_osd->o_requests) && |
1156 | list_empty(&req->r_osd->o_linger_requests)) { | |
1157 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 1158 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 1159 | } |
fbdb9190 | 1160 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 1161 | req->r_osd = NULL; |
0ba6478d | 1162 | } |
f24e9980 | 1163 | |
7d5f2481 | 1164 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1165 | ceph_osdc_put_request(req); |
1166 | ||
422d2cb8 YS |
1167 | if (osdc->num_requests == 0) { |
1168 | dout(" no requests, canceling timeout\n"); | |
1169 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1170 | } |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * Cancel a previously queued request message | |
1175 | */ | |
1176 | static void __cancel_request(struct ceph_osd_request *req) | |
1177 | { | |
6bc18876 | 1178 | if (req->r_sent && req->r_osd) { |
6740a845 | 1179 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1180 | req->r_sent = 0; |
1181 | } | |
1182 | } | |
1183 | ||
a40c4f10 YS |
1184 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1185 | struct ceph_osd_request *req) | |
1186 | { | |
1187 | dout("__register_linger_request %p\n", req); | |
96e4dac6 | 1188 | ceph_osdc_get_request(req); |
a40c4f10 | 1189 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 SW |
1190 | if (req->r_osd) |
1191 | list_add_tail(&req->r_linger_osd, | |
1192 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1193 | } |
1194 | ||
1195 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1196 | struct ceph_osd_request *req) | |
1197 | { | |
1198 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1199 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1200 | if (req->r_osd) { |
a40c4f10 YS |
1201 | list_del_init(&req->r_linger_osd); |
1202 | ||
1203 | if (list_empty(&req->r_osd->o_requests) && | |
1204 | list_empty(&req->r_osd->o_linger_requests)) { | |
1205 | dout("moving osd to %p lru\n", req->r_osd); | |
1206 | __move_osd_to_lru(osdc, req->r_osd); | |
1207 | } | |
fbdb9190 SW |
1208 | if (list_empty(&req->r_osd_item)) |
1209 | req->r_osd = NULL; | |
a40c4f10 | 1210 | } |
96e4dac6 | 1211 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1212 | } |
1213 | ||
1214 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1215 | struct ceph_osd_request *req) | |
1216 | { | |
1217 | mutex_lock(&osdc->request_mutex); | |
1218 | if (req->r_linger) { | |
c10ebbf5 | 1219 | req->r_linger = 0; |
96e4dac6 | 1220 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
1221 | } |
1222 | mutex_unlock(&osdc->request_mutex); | |
1223 | } | |
1224 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1225 | ||
1226 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1227 | struct ceph_osd_request *req) | |
1228 | { | |
1229 | if (!req->r_linger) { | |
1230 | dout("set_request_linger %p\n", req); | |
1231 | req->r_linger = 1; | |
a40c4f10 YS |
1232 | } |
1233 | } | |
1234 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1235 | ||
d29adb34 JD |
1236 | /* |
1237 | * Returns whether a request should be blocked from being sent | |
1238 | * based on the current osdmap and osd_client settings. | |
1239 | * | |
1240 | * Caller should hold map_sem for read. | |
1241 | */ | |
1242 | static bool __req_should_be_paused(struct ceph_osd_client *osdc, | |
1243 | struct ceph_osd_request *req) | |
1244 | { | |
1245 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1246 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1247 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
1248 | return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1249 | (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1250 | } | |
1251 | ||
f24e9980 SW |
1252 | /* |
1253 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1254 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1255 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1256 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1257 | * |
1258 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1259 | * | |
1260 | * Caller should hold map_sem for read and request_mutex. | |
1261 | */ | |
6f6c7006 | 1262 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1263 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1264 | { |
5b191d99 | 1265 | struct ceph_pg pgid; |
d85b7056 SW |
1266 | int acting[CEPH_PG_MAX_SIZE]; |
1267 | int o = -1, num = 0; | |
f24e9980 | 1268 | int err; |
d29adb34 | 1269 | bool was_paused; |
f24e9980 | 1270 | |
6f6c7006 | 1271 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 | 1272 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
22116525 | 1273 | req->r_oloc.pool); |
6f6c7006 SW |
1274 | if (err) { |
1275 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1276 | return err; |
6f6c7006 | 1277 | } |
7740a42f SW |
1278 | req->r_pgid = pgid; |
1279 | ||
d85b7056 SW |
1280 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1281 | if (err > 0) { | |
1282 | o = acting[0]; | |
1283 | num = err; | |
1284 | } | |
f24e9980 | 1285 | |
d29adb34 JD |
1286 | was_paused = req->r_paused; |
1287 | req->r_paused = __req_should_be_paused(osdc, req); | |
1288 | if (was_paused && !req->r_paused) | |
1289 | force_resend = 1; | |
1290 | ||
38d6453c SW |
1291 | if ((!force_resend && |
1292 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1293 | req->r_sent >= req->r_osd->o_incarnation && |
1294 | req->r_num_pg_osds == num && | |
1295 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
d29adb34 JD |
1296 | (req->r_osd == NULL && o == -1) || |
1297 | req->r_paused) | |
f24e9980 SW |
1298 | return 0; /* no change */ |
1299 | ||
5b191d99 SW |
1300 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1301 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1302 | req->r_osd ? req->r_osd->o_osd : -1); |
1303 | ||
d85b7056 SW |
1304 | /* record full pg acting set */ |
1305 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1306 | req->r_num_pg_osds = num; | |
1307 | ||
f24e9980 SW |
1308 | if (req->r_osd) { |
1309 | __cancel_request(req); | |
1310 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1311 | req->r_osd = NULL; |
1312 | } | |
1313 | ||
1314 | req->r_osd = __lookup_osd(osdc, o); | |
1315 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1316 | err = -ENOMEM; |
e10006f8 | 1317 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1318 | if (!req->r_osd) { |
1319 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1320 | goto out; |
6f6c7006 | 1321 | } |
f24e9980 | 1322 | |
6f6c7006 | 1323 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1324 | __insert_osd(osdc, req->r_osd); |
1325 | ||
b7a9e5dd SW |
1326 | ceph_con_open(&req->r_osd->o_con, |
1327 | CEPH_ENTITY_TYPE_OSD, o, | |
1328 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1329 | } |
1330 | ||
f5a2041b YS |
1331 | if (req->r_osd) { |
1332 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1333 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1334 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1335 | } else { |
ad885927 | 1336 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1337 | } |
d85b7056 | 1338 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1339 | |
1340 | out: | |
f24e9980 SW |
1341 | return err; |
1342 | } | |
1343 | ||
1344 | /* | |
1345 | * caller should hold map_sem (for read) and request_mutex | |
1346 | */ | |
56e925b6 SW |
1347 | static void __send_request(struct ceph_osd_client *osdc, |
1348 | struct ceph_osd_request *req) | |
f24e9980 | 1349 | { |
1b83bef2 | 1350 | void *p; |
f24e9980 | 1351 | |
1b83bef2 SW |
1352 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1353 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1354 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1355 | ||
1356 | /* fill in message content that changes each time we send it */ | |
1357 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1358 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
22116525 | 1359 | put_unaligned_le64(req->r_oloc.pool, req->r_request_pool); |
1b83bef2 SW |
1360 | p = req->r_request_pgid; |
1361 | ceph_encode_64(&p, req->r_pgid.pool); | |
1362 | ceph_encode_32(&p, req->r_pgid.seed); | |
1363 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1364 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1365 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1366 | |
3dd72fc0 | 1367 | req->r_stamp = jiffies; |
07a27e22 | 1368 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1369 | |
1370 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1371 | |
f24e9980 | 1372 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1373 | |
1374 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1375 | } |
1376 | ||
6f6c7006 SW |
1377 | /* |
1378 | * Send any requests in the queue (req_unsent). | |
1379 | */ | |
f9d25199 | 1380 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1381 | { |
1382 | struct ceph_osd_request *req, *tmp; | |
1383 | ||
f9d25199 AE |
1384 | dout("__send_queued\n"); |
1385 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1386 | __send_request(osdc, req); |
6f6c7006 SW |
1387 | } |
1388 | ||
f24e9980 SW |
1389 | /* |
1390 | * Timeout callback, called every N seconds when 1 or more osd | |
1391 | * requests has been active for more than N seconds. When this | |
1392 | * happens, we ping all OSDs with requests who have timed out to | |
1393 | * ensure any communications channel reset is detected. Reset the | |
1394 | * request timeouts another N seconds in the future as we go. | |
1395 | * Reschedule the timeout event another N seconds in future (unless | |
1396 | * there are no open requests). | |
1397 | */ | |
1398 | static void handle_timeout(struct work_struct *work) | |
1399 | { | |
1400 | struct ceph_osd_client *osdc = | |
1401 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1402 | struct ceph_osd_request *req; |
f24e9980 | 1403 | struct ceph_osd *osd; |
422d2cb8 | 1404 | unsigned long keepalive = |
3d14c5d2 | 1405 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1406 | struct list_head slow_osds; |
f24e9980 SW |
1407 | dout("timeout\n"); |
1408 | down_read(&osdc->map_sem); | |
1409 | ||
1410 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1411 | ||
1412 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1413 | |
422d2cb8 YS |
1414 | /* |
1415 | * ping osds that are a bit slow. this ensures that if there | |
1416 | * is a break in the TCP connection we will notice, and reopen | |
1417 | * a connection with that osd (from the fault callback). | |
1418 | */ | |
1419 | INIT_LIST_HEAD(&slow_osds); | |
1420 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1421 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1422 | break; |
1423 | ||
1424 | osd = req->r_osd; | |
1425 | BUG_ON(!osd); | |
1426 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1427 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1428 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1429 | } | |
1430 | while (!list_empty(&slow_osds)) { | |
1431 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1432 | o_keepalive_item); | |
1433 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1434 | ceph_con_keepalive(&osd->o_con); |
1435 | } | |
1436 | ||
422d2cb8 | 1437 | __schedule_osd_timeout(osdc); |
f9d25199 | 1438 | __send_queued(osdc); |
f24e9980 | 1439 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1440 | up_read(&osdc->map_sem); |
1441 | } | |
1442 | ||
f5a2041b YS |
1443 | static void handle_osds_timeout(struct work_struct *work) |
1444 | { | |
1445 | struct ceph_osd_client *osdc = | |
1446 | container_of(work, struct ceph_osd_client, | |
1447 | osds_timeout_work.work); | |
1448 | unsigned long delay = | |
3d14c5d2 | 1449 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1450 | |
1451 | dout("osds timeout\n"); | |
1452 | down_read(&osdc->map_sem); | |
aca420bc | 1453 | remove_old_osds(osdc); |
f5a2041b YS |
1454 | up_read(&osdc->map_sem); |
1455 | ||
1456 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1457 | round_jiffies_relative(delay)); | |
1458 | } | |
1459 | ||
25845472 SW |
1460 | static void complete_request(struct ceph_osd_request *req) |
1461 | { | |
25845472 SW |
1462 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1463 | } | |
1464 | ||
f24e9980 SW |
1465 | /* |
1466 | * handle osd op reply. either call the callback if it is specified, | |
1467 | * or do the completion to wake up the waiting thread. | |
1468 | */ | |
350b1c32 SW |
1469 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1470 | struct ceph_connection *con) | |
f24e9980 | 1471 | { |
1b83bef2 | 1472 | void *p, *end; |
f24e9980 SW |
1473 | struct ceph_osd_request *req; |
1474 | u64 tid; | |
1b83bef2 | 1475 | int object_len; |
79528734 AE |
1476 | unsigned int numops; |
1477 | int payload_len, flags; | |
0ceed5db | 1478 | s32 result; |
1b83bef2 SW |
1479 | s32 retry_attempt; |
1480 | struct ceph_pg pg; | |
1481 | int err; | |
1482 | u32 reassert_epoch; | |
1483 | u64 reassert_version; | |
1484 | u32 osdmap_epoch; | |
0d5af164 | 1485 | int already_completed; |
9fc6e064 | 1486 | u32 bytes; |
79528734 | 1487 | unsigned int i; |
f24e9980 | 1488 | |
6df058c0 | 1489 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1490 | dout("handle_reply %p tid %llu\n", msg, tid); |
1491 | ||
1492 | p = msg->front.iov_base; | |
1493 | end = p + msg->front.iov_len; | |
1494 | ||
1495 | ceph_decode_need(&p, end, 4, bad); | |
1496 | object_len = ceph_decode_32(&p); | |
1497 | ceph_decode_need(&p, end, object_len, bad); | |
1498 | p += object_len; | |
1499 | ||
ef4859d6 | 1500 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1501 | if (err) |
f24e9980 | 1502 | goto bad; |
1b83bef2 SW |
1503 | |
1504 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1505 | flags = ceph_decode_64(&p); | |
1506 | result = ceph_decode_32(&p); | |
1507 | reassert_epoch = ceph_decode_32(&p); | |
1508 | reassert_version = ceph_decode_64(&p); | |
1509 | osdmap_epoch = ceph_decode_32(&p); | |
1510 | ||
f24e9980 SW |
1511 | /* lookup */ |
1512 | mutex_lock(&osdc->request_mutex); | |
1513 | req = __lookup_request(osdc, tid); | |
1514 | if (req == NULL) { | |
1515 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1516 | goto bad_mutex; |
f24e9980 SW |
1517 | } |
1518 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1519 | |
1520 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1521 | req, result); | |
1522 | ||
18741196 | 1523 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 SW |
1524 | numops = ceph_decode_32(&p); |
1525 | if (numops > CEPH_OSD_MAX_OP) | |
1526 | goto bad_put; | |
1527 | if (numops != req->r_num_ops) | |
1528 | goto bad_put; | |
1529 | payload_len = 0; | |
18741196 | 1530 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1531 | for (i = 0; i < numops; i++) { |
1532 | struct ceph_osd_op *op = p; | |
1533 | int len; | |
1534 | ||
1535 | len = le32_to_cpu(op->payload_len); | |
1536 | req->r_reply_op_len[i] = len; | |
1537 | dout(" op %d has %d bytes\n", i, len); | |
1538 | payload_len += len; | |
1539 | p += sizeof(*op); | |
1540 | } | |
9fc6e064 AE |
1541 | bytes = le32_to_cpu(msg->hdr.data_len); |
1542 | if (payload_len != bytes) { | |
1b83bef2 | 1543 | pr_warning("sum of op payload lens %d != data_len %d", |
9fc6e064 | 1544 | payload_len, bytes); |
1b83bef2 SW |
1545 | goto bad_put; |
1546 | } | |
1547 | ||
18741196 | 1548 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1549 | retry_attempt = ceph_decode_32(&p); |
1550 | for (i = 0; i < numops; i++) | |
1551 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1552 | |
eb845ff1 YZ |
1553 | already_completed = req->r_got_reply; |
1554 | ||
f24e9980 | 1555 | if (!req->r_got_reply) { |
f24e9980 | 1556 | |
1b83bef2 | 1557 | req->r_result = result; |
f24e9980 SW |
1558 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1559 | bytes); | |
1560 | if (req->r_result == 0) | |
1561 | req->r_result = bytes; | |
1562 | ||
1563 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1564 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1565 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1566 | |
1567 | req->r_got_reply = 1; | |
1568 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1569 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1570 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1571 | goto done; |
1572 | } | |
1573 | ||
1574 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1575 | ||
a40c4f10 YS |
1576 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1577 | __register_linger_request(osdc, req); | |
1578 | ||
f24e9980 | 1579 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1580 | if (result < 0 || |
1581 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1582 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1583 | __unregister_request(osdc, req); | |
1584 | ||
1585 | mutex_unlock(&osdc->request_mutex); | |
1586 | ||
eb845ff1 | 1587 | if (!already_completed) { |
61c5d6bf YZ |
1588 | if (req->r_unsafe_callback && |
1589 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
1590 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
1591 | if (req->r_callback) |
1592 | req->r_callback(req, msg); | |
1593 | else | |
1594 | complete_all(&req->r_completion); | |
1595 | } | |
f24e9980 | 1596 | |
61c5d6bf YZ |
1597 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
1598 | if (req->r_unsafe_callback && already_completed) | |
1599 | req->r_unsafe_callback(req, false); | |
25845472 | 1600 | complete_request(req); |
61c5d6bf | 1601 | } |
f24e9980 SW |
1602 | |
1603 | done: | |
a40c4f10 | 1604 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1605 | ceph_osdc_put_request(req); |
1606 | return; | |
1607 | ||
1b83bef2 | 1608 | bad_put: |
37c89bde LW |
1609 | req->r_result = -EIO; |
1610 | __unregister_request(osdc, req); | |
1611 | if (req->r_callback) | |
1612 | req->r_callback(req, msg); | |
1613 | else | |
1614 | complete_all(&req->r_completion); | |
1615 | complete_request(req); | |
1b83bef2 | 1616 | ceph_osdc_put_request(req); |
8058fd45 AE |
1617 | bad_mutex: |
1618 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1619 | bad: |
1b83bef2 SW |
1620 | pr_err("corrupt osd_op_reply got %d %d\n", |
1621 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1622 | ceph_msg_dump(msg); |
f24e9980 SW |
1623 | } |
1624 | ||
6f6c7006 | 1625 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1626 | { |
f24e9980 | 1627 | struct rb_node *p, *n; |
f24e9980 | 1628 | |
6f6c7006 SW |
1629 | for (p = rb_first(&osdc->osds); p; p = n) { |
1630 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1631 | |
6f6c7006 SW |
1632 | n = rb_next(p); |
1633 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1634 | memcmp(&osd->o_con.peer_addr, | |
1635 | ceph_osd_addr(osdc->osdmap, | |
1636 | osd->o_osd), | |
1637 | sizeof(struct ceph_entity_addr)) != 0) | |
1638 | __reset_osd(osdc, osd); | |
f24e9980 | 1639 | } |
422d2cb8 YS |
1640 | } |
1641 | ||
1642 | /* | |
6f6c7006 SW |
1643 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1644 | * no osd, request a new map. | |
422d2cb8 | 1645 | * |
e6d50f67 | 1646 | * Caller should hold map_sem for read. |
422d2cb8 | 1647 | */ |
9a1ea2db JD |
1648 | static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, |
1649 | bool force_resend_writes) | |
422d2cb8 | 1650 | { |
a40c4f10 | 1651 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1652 | struct rb_node *p; |
1653 | int needmap = 0; | |
1654 | int err; | |
9a1ea2db | 1655 | bool force_resend_req; |
422d2cb8 | 1656 | |
9a1ea2db JD |
1657 | dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", |
1658 | force_resend_writes ? " (force resend writes)" : ""); | |
422d2cb8 | 1659 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1660 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1661 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1662 | p = rb_next(p); |
ab60b16d AE |
1663 | |
1664 | /* | |
1665 | * For linger requests that have not yet been | |
1666 | * registered, move them to the linger list; they'll | |
1667 | * be sent to the osd in the loop below. Unregister | |
1668 | * the request before re-registering it as a linger | |
1669 | * request to ensure the __map_request() below | |
1670 | * will decide it needs to be sent. | |
1671 | */ | |
1672 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1673 | dout("%p tid %llu restart on osd%d\n", | |
1674 | req, req->r_tid, | |
1675 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 1676 | ceph_osdc_get_request(req); |
ab60b16d AE |
1677 | __unregister_request(osdc, req); |
1678 | __register_linger_request(osdc, req); | |
96e4dac6 | 1679 | ceph_osdc_put_request(req); |
ab60b16d AE |
1680 | continue; |
1681 | } | |
1682 | ||
9a1ea2db JD |
1683 | force_resend_req = force_resend || |
1684 | (force_resend_writes && | |
1685 | req->r_flags & CEPH_OSD_FLAG_WRITE); | |
1686 | err = __map_request(osdc, req, force_resend_req); | |
6f6c7006 SW |
1687 | if (err < 0) |
1688 | continue; /* error */ | |
1689 | if (req->r_osd == NULL) { | |
1690 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1691 | needmap++; /* request a newer map */ | |
1692 | } else if (err > 0) { | |
6194ea89 SW |
1693 | if (!req->r_linger) { |
1694 | dout("%p tid %llu requeued on osd%d\n", req, | |
1695 | req->r_tid, | |
1696 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1697 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1698 | } |
1699 | } | |
a40c4f10 YS |
1700 | } |
1701 | ||
1702 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1703 | r_linger_item) { | |
1704 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1705 | ||
9a1ea2db JD |
1706 | err = __map_request(osdc, req, |
1707 | force_resend || force_resend_writes); | |
ab60b16d | 1708 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1709 | if (err == 0) |
1710 | continue; /* no change and no osd was specified */ | |
1711 | if (err < 0) | |
1712 | continue; /* hrm! */ | |
1713 | if (req->r_osd == NULL) { | |
1714 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1715 | needmap++; /* request a newer map */ | |
1716 | continue; | |
6f6c7006 | 1717 | } |
a40c4f10 YS |
1718 | |
1719 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1720 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1721 | __register_request(osdc, req); |
c89ce05e | 1722 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1723 | } |
14d2f38d | 1724 | reset_changed_osds(osdc); |
f24e9980 SW |
1725 | mutex_unlock(&osdc->request_mutex); |
1726 | ||
1727 | if (needmap) { | |
1728 | dout("%d requests for down osds, need new map\n", needmap); | |
1729 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1730 | } | |
422d2cb8 | 1731 | } |
6f6c7006 SW |
1732 | |
1733 | ||
f24e9980 SW |
1734 | /* |
1735 | * Process updated osd map. | |
1736 | * | |
1737 | * The message contains any number of incremental and full maps, normally | |
1738 | * indicating some sort of topology change in the cluster. Kick requests | |
1739 | * off to different OSDs as needed. | |
1740 | */ | |
1741 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1742 | { | |
1743 | void *p, *end, *next; | |
1744 | u32 nr_maps, maplen; | |
1745 | u32 epoch; | |
1746 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1747 | int err; | |
1748 | struct ceph_fsid fsid; | |
9a1ea2db | 1749 | bool was_full; |
f24e9980 SW |
1750 | |
1751 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1752 | p = msg->front.iov_base; | |
1753 | end = p + msg->front.iov_len; | |
1754 | ||
1755 | /* verify fsid */ | |
1756 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1757 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1758 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1759 | return; | |
f24e9980 SW |
1760 | |
1761 | down_write(&osdc->map_sem); | |
1762 | ||
9a1ea2db JD |
1763 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); |
1764 | ||
f24e9980 SW |
1765 | /* incremental maps */ |
1766 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1767 | dout(" %d inc maps\n", nr_maps); | |
1768 | while (nr_maps > 0) { | |
1769 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1770 | epoch = ceph_decode_32(&p); |
1771 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1772 | ceph_decode_need(&p, end, maplen, bad); |
1773 | next = p + maplen; | |
1774 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1775 | dout("applying incremental map %u len %d\n", | |
1776 | epoch, maplen); | |
1777 | newmap = osdmap_apply_incremental(&p, next, | |
1778 | osdc->osdmap, | |
15d9882c | 1779 | &osdc->client->msgr); |
f24e9980 SW |
1780 | if (IS_ERR(newmap)) { |
1781 | err = PTR_ERR(newmap); | |
1782 | goto bad; | |
1783 | } | |
30dc6381 | 1784 | BUG_ON(!newmap); |
f24e9980 SW |
1785 | if (newmap != osdc->osdmap) { |
1786 | ceph_osdmap_destroy(osdc->osdmap); | |
1787 | osdc->osdmap = newmap; | |
1788 | } | |
9a1ea2db JD |
1789 | was_full = was_full || |
1790 | ceph_osdmap_flag(osdc->osdmap, | |
1791 | CEPH_OSDMAP_FULL); | |
1792 | kick_requests(osdc, 0, was_full); | |
f24e9980 SW |
1793 | } else { |
1794 | dout("ignoring incremental map %u len %d\n", | |
1795 | epoch, maplen); | |
1796 | } | |
1797 | p = next; | |
1798 | nr_maps--; | |
1799 | } | |
1800 | if (newmap) | |
1801 | goto done; | |
1802 | ||
1803 | /* full maps */ | |
1804 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1805 | dout(" %d full maps\n", nr_maps); | |
1806 | while (nr_maps) { | |
1807 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1808 | epoch = ceph_decode_32(&p); |
1809 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1810 | ceph_decode_need(&p, end, maplen, bad); |
1811 | if (nr_maps > 1) { | |
1812 | dout("skipping non-latest full map %u len %d\n", | |
1813 | epoch, maplen); | |
1814 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1815 | dout("skipping full map %u len %d, " | |
1816 | "older than our %u\n", epoch, maplen, | |
1817 | osdc->osdmap->epoch); | |
1818 | } else { | |
38d6453c SW |
1819 | int skipped_map = 0; |
1820 | ||
f24e9980 SW |
1821 | dout("taking full map %u len %d\n", epoch, maplen); |
1822 | newmap = osdmap_decode(&p, p+maplen); | |
1823 | if (IS_ERR(newmap)) { | |
1824 | err = PTR_ERR(newmap); | |
1825 | goto bad; | |
1826 | } | |
30dc6381 | 1827 | BUG_ON(!newmap); |
f24e9980 SW |
1828 | oldmap = osdc->osdmap; |
1829 | osdc->osdmap = newmap; | |
38d6453c SW |
1830 | if (oldmap) { |
1831 | if (oldmap->epoch + 1 < newmap->epoch) | |
1832 | skipped_map = 1; | |
f24e9980 | 1833 | ceph_osdmap_destroy(oldmap); |
38d6453c | 1834 | } |
9a1ea2db JD |
1835 | was_full = was_full || |
1836 | ceph_osdmap_flag(osdc->osdmap, | |
1837 | CEPH_OSDMAP_FULL); | |
1838 | kick_requests(osdc, skipped_map, was_full); | |
f24e9980 SW |
1839 | } |
1840 | p += maplen; | |
1841 | nr_maps--; | |
1842 | } | |
1843 | ||
b72e19b9 DC |
1844 | if (!osdc->osdmap) |
1845 | goto bad; | |
f24e9980 SW |
1846 | done: |
1847 | downgrade_write(&osdc->map_sem); | |
1848 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1849 | |
1850 | /* | |
1851 | * subscribe to subsequent osdmap updates if full to ensure | |
1852 | * we find out when we are no longer full and stop returning | |
1853 | * ENOSPC. | |
1854 | */ | |
d29adb34 JD |
1855 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || |
1856 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
1857 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) | |
cd634fb6 SW |
1858 | ceph_monc_request_next_osdmap(&osdc->client->monc); |
1859 | ||
f9d25199 AE |
1860 | mutex_lock(&osdc->request_mutex); |
1861 | __send_queued(osdc); | |
1862 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1863 | up_read(&osdc->map_sem); |
03066f23 | 1864 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1865 | return; |
1866 | ||
1867 | bad: | |
1868 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1869 | ceph_msg_dump(msg); |
f24e9980 SW |
1870 | up_write(&osdc->map_sem); |
1871 | return; | |
1872 | } | |
1873 | ||
a40c4f10 YS |
1874 | /* |
1875 | * watch/notify callback event infrastructure | |
1876 | * | |
1877 | * These callbacks are used both for watch and notify operations. | |
1878 | */ | |
1879 | static void __release_event(struct kref *kref) | |
1880 | { | |
1881 | struct ceph_osd_event *event = | |
1882 | container_of(kref, struct ceph_osd_event, kref); | |
1883 | ||
1884 | dout("__release_event %p\n", event); | |
1885 | kfree(event); | |
1886 | } | |
1887 | ||
1888 | static void get_event(struct ceph_osd_event *event) | |
1889 | { | |
1890 | kref_get(&event->kref); | |
1891 | } | |
1892 | ||
1893 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1894 | { | |
1895 | kref_put(&event->kref, __release_event); | |
1896 | } | |
1897 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1898 | ||
1899 | static void __insert_event(struct ceph_osd_client *osdc, | |
1900 | struct ceph_osd_event *new) | |
1901 | { | |
1902 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1903 | struct rb_node *parent = NULL; | |
1904 | struct ceph_osd_event *event = NULL; | |
1905 | ||
1906 | while (*p) { | |
1907 | parent = *p; | |
1908 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1909 | if (new->cookie < event->cookie) | |
1910 | p = &(*p)->rb_left; | |
1911 | else if (new->cookie > event->cookie) | |
1912 | p = &(*p)->rb_right; | |
1913 | else | |
1914 | BUG(); | |
1915 | } | |
1916 | ||
1917 | rb_link_node(&new->node, parent, p); | |
1918 | rb_insert_color(&new->node, &osdc->event_tree); | |
1919 | } | |
1920 | ||
1921 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1922 | u64 cookie) | |
1923 | { | |
1924 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1925 | struct rb_node *parent = NULL; | |
1926 | struct ceph_osd_event *event = NULL; | |
1927 | ||
1928 | while (*p) { | |
1929 | parent = *p; | |
1930 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1931 | if (cookie < event->cookie) | |
1932 | p = &(*p)->rb_left; | |
1933 | else if (cookie > event->cookie) | |
1934 | p = &(*p)->rb_right; | |
1935 | else | |
1936 | return event; | |
1937 | } | |
1938 | return NULL; | |
1939 | } | |
1940 | ||
1941 | static void __remove_event(struct ceph_osd_event *event) | |
1942 | { | |
1943 | struct ceph_osd_client *osdc = event->osdc; | |
1944 | ||
1945 | if (!RB_EMPTY_NODE(&event->node)) { | |
1946 | dout("__remove_event removed %p\n", event); | |
1947 | rb_erase(&event->node, &osdc->event_tree); | |
1948 | ceph_osdc_put_event(event); | |
1949 | } else { | |
1950 | dout("__remove_event didn't remove %p\n", event); | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1955 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1956 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1957 | { |
1958 | struct ceph_osd_event *event; | |
1959 | ||
1960 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1961 | if (!event) | |
1962 | return -ENOMEM; | |
1963 | ||
1964 | dout("create_event %p\n", event); | |
1965 | event->cb = event_cb; | |
3c663bbd | 1966 | event->one_shot = 0; |
a40c4f10 YS |
1967 | event->data = data; |
1968 | event->osdc = osdc; | |
1969 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1970 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1971 | kref_init(&event->kref); /* one ref for us */ |
1972 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1973 | |
1974 | spin_lock(&osdc->event_lock); | |
1975 | event->cookie = ++osdc->event_count; | |
1976 | __insert_event(osdc, event); | |
1977 | spin_unlock(&osdc->event_lock); | |
1978 | ||
1979 | *pevent = event; | |
1980 | return 0; | |
1981 | } | |
1982 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1983 | ||
1984 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1985 | { | |
1986 | struct ceph_osd_client *osdc = event->osdc; | |
1987 | ||
1988 | dout("cancel_event %p\n", event); | |
1989 | spin_lock(&osdc->event_lock); | |
1990 | __remove_event(event); | |
1991 | spin_unlock(&osdc->event_lock); | |
1992 | ceph_osdc_put_event(event); /* caller's */ | |
1993 | } | |
1994 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1995 | ||
1996 | ||
1997 | static void do_event_work(struct work_struct *work) | |
1998 | { | |
1999 | struct ceph_osd_event_work *event_work = | |
2000 | container_of(work, struct ceph_osd_event_work, work); | |
2001 | struct ceph_osd_event *event = event_work->event; | |
2002 | u64 ver = event_work->ver; | |
2003 | u64 notify_id = event_work->notify_id; | |
2004 | u8 opcode = event_work->opcode; | |
2005 | ||
2006 | dout("do_event_work completing %p\n", event); | |
2007 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2008 | dout("do_event_work completed %p\n", event); |
2009 | ceph_osdc_put_event(event); | |
2010 | kfree(event_work); | |
2011 | } | |
2012 | ||
2013 | ||
2014 | /* | |
2015 | * Process osd watch notifications | |
2016 | */ | |
3c663bbd AE |
2017 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2018 | struct ceph_msg *msg) | |
a40c4f10 YS |
2019 | { |
2020 | void *p, *end; | |
2021 | u8 proto_ver; | |
2022 | u64 cookie, ver, notify_id; | |
2023 | u8 opcode; | |
2024 | struct ceph_osd_event *event; | |
2025 | struct ceph_osd_event_work *event_work; | |
2026 | ||
2027 | p = msg->front.iov_base; | |
2028 | end = p + msg->front.iov_len; | |
2029 | ||
2030 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2031 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2032 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2033 | ceph_decode_64_safe(&p, end, ver, bad); | |
2034 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2035 | ||
2036 | spin_lock(&osdc->event_lock); | |
2037 | event = __find_event(osdc, cookie); | |
2038 | if (event) { | |
3c663bbd | 2039 | BUG_ON(event->one_shot); |
a40c4f10 | 2040 | get_event(event); |
a40c4f10 YS |
2041 | } |
2042 | spin_unlock(&osdc->event_lock); | |
2043 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2044 | cookie, ver, event); | |
2045 | if (event) { | |
2046 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
2047 | if (!event_work) { |
2048 | dout("ERROR: could not allocate event_work\n"); | |
2049 | goto done_err; | |
2050 | } | |
6b0ae409 | 2051 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2052 | event_work->event = event; |
2053 | event_work->ver = ver; | |
2054 | event_work->notify_id = notify_id; | |
2055 | event_work->opcode = opcode; | |
2056 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
2057 | dout("WARNING: failed to queue notify event work\n"); | |
2058 | goto done_err; | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | return; | |
2063 | ||
2064 | done_err: | |
a40c4f10 YS |
2065 | ceph_osdc_put_event(event); |
2066 | return; | |
2067 | ||
2068 | bad: | |
2069 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
2070 | return; | |
2071 | } | |
2072 | ||
e65550fd AE |
2073 | /* |
2074 | * build new request AND message | |
2075 | * | |
2076 | */ | |
2077 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2078 | struct ceph_snap_context *snapc, u64 snap_id, | |
2079 | struct timespec *mtime) | |
2080 | { | |
2081 | struct ceph_msg *msg = req->r_request; | |
2082 | void *p; | |
2083 | size_t msg_size; | |
2084 | int flags = req->r_flags; | |
2085 | u64 data_len; | |
2086 | unsigned int i; | |
2087 | ||
2088 | req->r_snapid = snap_id; | |
2089 | req->r_snapc = ceph_get_snap_context(snapc); | |
2090 | ||
2091 | /* encode request */ | |
2092 | msg->hdr.version = cpu_to_le16(4); | |
2093 | ||
2094 | p = msg->front.iov_base; | |
2095 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2096 | req->r_request_osdmap_epoch = p; | |
2097 | p += 4; | |
2098 | req->r_request_flags = p; | |
2099 | p += 4; | |
2100 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2101 | ceph_encode_timespec(p, mtime); | |
2102 | p += sizeof(struct ceph_timespec); | |
2103 | req->r_request_reassert_version = p; | |
2104 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2105 | ||
2106 | /* oloc */ | |
2107 | ceph_encode_8(&p, 4); | |
2108 | ceph_encode_8(&p, 4); | |
2109 | ceph_encode_32(&p, 8 + 4 + 4); | |
2110 | req->r_request_pool = p; | |
2111 | p += 8; | |
2112 | ceph_encode_32(&p, -1); /* preferred */ | |
2113 | ceph_encode_32(&p, 0); /* key len */ | |
2114 | ||
2115 | ceph_encode_8(&p, 1); | |
2116 | req->r_request_pgid = p; | |
2117 | p += 8 + 4; | |
2118 | ceph_encode_32(&p, -1); /* preferred */ | |
2119 | ||
2120 | /* oid */ | |
2121 | ceph_encode_32(&p, req->r_oid_len); | |
2122 | memcpy(p, req->r_oid, req->r_oid_len); | |
2123 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); | |
2124 | p += req->r_oid_len; | |
2125 | ||
2126 | /* ops--can imply data */ | |
2127 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2128 | data_len = 0; | |
2129 | for (i = 0; i < req->r_num_ops; i++) { | |
2130 | data_len += osd_req_encode_op(req, p, i); | |
2131 | p += sizeof(struct ceph_osd_op); | |
2132 | } | |
2133 | ||
2134 | /* snaps */ | |
2135 | ceph_encode_64(&p, req->r_snapid); | |
2136 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2137 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2138 | if (req->r_snapc) { | |
2139 | for (i = 0; i < snapc->num_snaps; i++) { | |
2140 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | req->r_request_attempts = p; | |
2145 | p += 4; | |
2146 | ||
2147 | /* data */ | |
2148 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2149 | u16 data_off; | |
2150 | ||
2151 | /* | |
2152 | * The header "data_off" is a hint to the receiver | |
2153 | * allowing it to align received data into its | |
2154 | * buffers such that there's no need to re-copy | |
2155 | * it before writing it to disk (direct I/O). | |
2156 | */ | |
2157 | data_off = (u16) (off & 0xffff); | |
2158 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2159 | } | |
2160 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2161 | ||
2162 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2163 | msg_size = p - msg->front.iov_base; | |
2164 | msg->front.iov_len = msg_size; | |
2165 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2166 | ||
2167 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2168 | } | |
2169 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2170 | ||
70636773 AE |
2171 | /* |
2172 | * Register request, send initial attempt. | |
2173 | */ | |
2174 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2175 | struct ceph_osd_request *req, | |
2176 | bool nofail) | |
2177 | { | |
2178 | int rc = 0; | |
2179 | ||
f24e9980 SW |
2180 | down_read(&osdc->map_sem); |
2181 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 2182 | __register_request(osdc, req); |
c10ebbf5 AE |
2183 | req->r_sent = 0; |
2184 | req->r_got_reply = 0; | |
92451b49 AE |
2185 | rc = __map_request(osdc, req, 0); |
2186 | if (rc < 0) { | |
2187 | if (nofail) { | |
2188 | dout("osdc_start_request failed map, " | |
2189 | " will retry %lld\n", req->r_tid); | |
2190 | rc = 0; | |
73d9f7ee | 2191 | } else { |
2192 | __unregister_request(osdc, req); | |
f24e9980 | 2193 | } |
92451b49 | 2194 | goto out_unlock; |
f24e9980 | 2195 | } |
92451b49 AE |
2196 | if (req->r_osd == NULL) { |
2197 | dout("send_request %p no up osds in pg\n", req); | |
2198 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2199 | } else { | |
7e2766a1 | 2200 | __send_queued(osdc); |
92451b49 AE |
2201 | } |
2202 | rc = 0; | |
234af26f | 2203 | out_unlock: |
f24e9980 SW |
2204 | mutex_unlock(&osdc->request_mutex); |
2205 | up_read(&osdc->map_sem); | |
2206 | return rc; | |
2207 | } | |
3d14c5d2 | 2208 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
2209 | |
2210 | /* | |
2211 | * wait for a request to complete | |
2212 | */ | |
2213 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2214 | struct ceph_osd_request *req) | |
2215 | { | |
2216 | int rc; | |
2217 | ||
2218 | rc = wait_for_completion_interruptible(&req->r_completion); | |
2219 | if (rc < 0) { | |
2220 | mutex_lock(&osdc->request_mutex); | |
2221 | __cancel_request(req); | |
529cfcc4 | 2222 | __unregister_request(osdc, req); |
f24e9980 | 2223 | mutex_unlock(&osdc->request_mutex); |
25845472 | 2224 | complete_request(req); |
529cfcc4 | 2225 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
2226 | return rc; |
2227 | } | |
2228 | ||
2229 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
2230 | return req->r_result; | |
2231 | } | |
3d14c5d2 | 2232 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2233 | |
2234 | /* | |
2235 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2236 | */ | |
2237 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2238 | { | |
2239 | struct ceph_osd_request *req; | |
2240 | u64 last_tid, next_tid = 0; | |
2241 | ||
2242 | mutex_lock(&osdc->request_mutex); | |
2243 | last_tid = osdc->last_tid; | |
2244 | while (1) { | |
2245 | req = __lookup_request_ge(osdc, next_tid); | |
2246 | if (!req) | |
2247 | break; | |
2248 | if (req->r_tid > last_tid) | |
2249 | break; | |
2250 | ||
2251 | next_tid = req->r_tid + 1; | |
2252 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2253 | continue; | |
2254 | ||
2255 | ceph_osdc_get_request(req); | |
2256 | mutex_unlock(&osdc->request_mutex); | |
2257 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2258 | req->r_tid, last_tid); | |
2259 | wait_for_completion(&req->r_safe_completion); | |
2260 | mutex_lock(&osdc->request_mutex); | |
2261 | ceph_osdc_put_request(req); | |
2262 | } | |
2263 | mutex_unlock(&osdc->request_mutex); | |
2264 | dout("sync done (thru tid %llu)\n", last_tid); | |
2265 | } | |
3d14c5d2 | 2266 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2267 | |
dd935f44 JD |
2268 | /* |
2269 | * Call all pending notify callbacks - for use after a watch is | |
2270 | * unregistered, to make sure no more callbacks for it will be invoked | |
2271 | */ | |
2272 | extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) | |
2273 | { | |
2274 | flush_workqueue(osdc->notify_wq); | |
2275 | } | |
2276 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2277 | ||
2278 | ||
f24e9980 SW |
2279 | /* |
2280 | * init, shutdown | |
2281 | */ | |
2282 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2283 | { | |
2284 | int err; | |
2285 | ||
2286 | dout("init\n"); | |
2287 | osdc->client = client; | |
2288 | osdc->osdmap = NULL; | |
2289 | init_rwsem(&osdc->map_sem); | |
2290 | init_completion(&osdc->map_waiters); | |
2291 | osdc->last_requested_map = 0; | |
2292 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2293 | osdc->last_tid = 0; |
2294 | osdc->osds = RB_ROOT; | |
f5a2041b | 2295 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2296 | osdc->requests = RB_ROOT; |
422d2cb8 | 2297 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2298 | INIT_LIST_HEAD(&osdc->req_unsent); |
2299 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2300 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2301 | osdc->num_requests = 0; |
2302 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2303 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2304 | spin_lock_init(&osdc->event_lock); |
2305 | osdc->event_tree = RB_ROOT; | |
2306 | osdc->event_count = 0; | |
f5a2041b YS |
2307 | |
2308 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2309 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2310 | |
5f44f142 | 2311 | err = -ENOMEM; |
f24e9980 SW |
2312 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2313 | sizeof(struct ceph_osd_request)); | |
2314 | if (!osdc->req_mempool) | |
5f44f142 | 2315 | goto out; |
f24e9980 | 2316 | |
d50b409f SW |
2317 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2318 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2319 | "osd_op"); |
f24e9980 | 2320 | if (err < 0) |
5f44f142 | 2321 | goto out_mempool; |
d50b409f | 2322 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2323 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2324 | "osd_op_reply"); | |
c16e7869 SW |
2325 | if (err < 0) |
2326 | goto out_msgpool; | |
a40c4f10 | 2327 | |
dbcae088 | 2328 | err = -ENOMEM; |
a40c4f10 | 2329 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2330 | if (!osdc->notify_wq) |
a40c4f10 | 2331 | goto out_msgpool; |
f24e9980 | 2332 | return 0; |
5f44f142 | 2333 | |
c16e7869 SW |
2334 | out_msgpool: |
2335 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2336 | out_mempool: |
2337 | mempool_destroy(osdc->req_mempool); | |
2338 | out: | |
2339 | return err; | |
f24e9980 SW |
2340 | } |
2341 | ||
2342 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2343 | { | |
a40c4f10 YS |
2344 | flush_workqueue(osdc->notify_wq); |
2345 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2346 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2347 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2348 | if (osdc->osdmap) { |
2349 | ceph_osdmap_destroy(osdc->osdmap); | |
2350 | osdc->osdmap = NULL; | |
2351 | } | |
aca420bc | 2352 | remove_all_osds(osdc); |
f24e9980 SW |
2353 | mempool_destroy(osdc->req_mempool); |
2354 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2355 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2356 | } |
2357 | ||
2358 | /* | |
2359 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2360 | * *plen. Return number of bytes read, or error. | |
2361 | */ | |
2362 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2363 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2364 | u64 off, u64 *plen, | |
2365 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2366 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2367 | { |
2368 | struct ceph_osd_request *req; | |
2369 | int rc = 0; | |
2370 | ||
2371 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2372 | vino.snap, off, *plen); | |
79528734 | 2373 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2374 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2375 | NULL, truncate_seq, truncate_size, |
153e5167 | 2376 | false); |
6816282d SW |
2377 | if (IS_ERR(req)) |
2378 | return PTR_ERR(req); | |
f24e9980 SW |
2379 | |
2380 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2381 | |
406e2c9f | 2382 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2383 | pages, *plen, page_align, false, false); |
f24e9980 | 2384 | |
e0c59487 | 2385 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2386 | off, *plen, *plen, page_align); |
f24e9980 | 2387 | |
79528734 | 2388 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2389 | |
f24e9980 SW |
2390 | rc = ceph_osdc_start_request(osdc, req, false); |
2391 | if (!rc) | |
2392 | rc = ceph_osdc_wait_request(osdc, req); | |
2393 | ||
2394 | ceph_osdc_put_request(req); | |
2395 | dout("readpages result %d\n", rc); | |
2396 | return rc; | |
2397 | } | |
3d14c5d2 | 2398 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2399 | |
2400 | /* | |
2401 | * do a synchronous write on N pages | |
2402 | */ | |
2403 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2404 | struct ceph_file_layout *layout, | |
2405 | struct ceph_snap_context *snapc, | |
2406 | u64 off, u64 len, | |
2407 | u32 truncate_seq, u64 truncate_size, | |
2408 | struct timespec *mtime, | |
24808826 | 2409 | struct page **pages, int num_pages) |
f24e9980 SW |
2410 | { |
2411 | struct ceph_osd_request *req; | |
2412 | int rc = 0; | |
b7495fc2 | 2413 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2414 | |
acead002 | 2415 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2416 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2417 | CEPH_OSD_OP_WRITE, |
24808826 | 2418 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2419 | snapc, truncate_seq, truncate_size, |
153e5167 | 2420 | true); |
6816282d SW |
2421 | if (IS_ERR(req)) |
2422 | return PTR_ERR(req); | |
f24e9980 SW |
2423 | |
2424 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2425 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2426 | false, false); |
2427 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2428 | |
79528734 | 2429 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2430 | |
87f979d3 | 2431 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2432 | if (!rc) |
2433 | rc = ceph_osdc_wait_request(osdc, req); | |
2434 | ||
2435 | ceph_osdc_put_request(req); | |
2436 | if (rc == 0) | |
2437 | rc = len; | |
2438 | dout("writepages result %d\n", rc); | |
2439 | return rc; | |
2440 | } | |
3d14c5d2 | 2441 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2442 | |
5522ae0b AE |
2443 | int ceph_osdc_setup(void) |
2444 | { | |
2445 | BUG_ON(ceph_osd_request_cache); | |
2446 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", | |
2447 | sizeof (struct ceph_osd_request), | |
2448 | __alignof__(struct ceph_osd_request), | |
2449 | 0, NULL); | |
2450 | ||
2451 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2452 | } | |
2453 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2454 | ||
2455 | void ceph_osdc_cleanup(void) | |
2456 | { | |
2457 | BUG_ON(!ceph_osd_request_cache); | |
2458 | kmem_cache_destroy(ceph_osd_request_cache); | |
2459 | ceph_osd_request_cache = NULL; | |
2460 | } | |
2461 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2462 | ||
f24e9980 SW |
2463 | /* |
2464 | * handle incoming message | |
2465 | */ | |
2466 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2467 | { | |
2468 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2469 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2470 | int type = le16_to_cpu(msg->hdr.type); |
2471 | ||
2472 | if (!osd) | |
4a32f93d | 2473 | goto out; |
32c895e7 | 2474 | osdc = osd->o_osdc; |
f24e9980 SW |
2475 | |
2476 | switch (type) { | |
2477 | case CEPH_MSG_OSD_MAP: | |
2478 | ceph_osdc_handle_map(osdc, msg); | |
2479 | break; | |
2480 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2481 | handle_reply(osdc, msg, con); |
f24e9980 | 2482 | break; |
a40c4f10 YS |
2483 | case CEPH_MSG_WATCH_NOTIFY: |
2484 | handle_watch_notify(osdc, msg); | |
2485 | break; | |
f24e9980 SW |
2486 | |
2487 | default: | |
2488 | pr_err("received unknown message type %d %s\n", type, | |
2489 | ceph_msg_type_name(type)); | |
2490 | } | |
4a32f93d | 2491 | out: |
f24e9980 SW |
2492 | ceph_msg_put(msg); |
2493 | } | |
2494 | ||
5b3a4db3 | 2495 | /* |
21b667f6 SW |
2496 | * lookup and return message for incoming reply. set up reply message |
2497 | * pages. | |
5b3a4db3 SW |
2498 | */ |
2499 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2500 | struct ceph_msg_header *hdr, |
2501 | int *skip) | |
f24e9980 SW |
2502 | { |
2503 | struct ceph_osd *osd = con->private; | |
2504 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2505 | struct ceph_msg *m; |
0547a9b3 | 2506 | struct ceph_osd_request *req; |
3f0a4ac5 | 2507 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2508 | int data_len = le32_to_cpu(hdr->data_len); |
0547a9b3 | 2509 | u64 tid; |
f24e9980 | 2510 | |
0547a9b3 YS |
2511 | tid = le64_to_cpu(hdr->tid); |
2512 | mutex_lock(&osdc->request_mutex); | |
2513 | req = __lookup_request(osdc, tid); | |
2514 | if (!req) { | |
2515 | *skip = 1; | |
2516 | m = NULL; | |
756a16a5 SW |
2517 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2518 | osd->o_osd); | |
0547a9b3 YS |
2519 | goto out; |
2520 | } | |
c16e7869 | 2521 | |
ace6d3a9 | 2522 | if (req->r_reply->con) |
8921d114 | 2523 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2524 | req->r_reply, req->r_reply->con); |
2525 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2526 | |
f2be82b0 | 2527 | if (front_len > req->r_reply->front_alloc_len) { |
4974341e | 2528 | pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n", |
f2be82b0 | 2529 | front_len, req->r_reply->front_alloc_len, |
4974341e AE |
2530 | (unsigned int)con->peer_name.type, |
2531 | le64_to_cpu(con->peer_name.num)); | |
3f0a4ac5 ID |
2532 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
2533 | false); | |
a79832f2 | 2534 | if (!m) |
c16e7869 SW |
2535 | goto out; |
2536 | ceph_msg_put(req->r_reply); | |
2537 | req->r_reply = m; | |
2538 | } | |
2539 | m = ceph_msg_get(req->r_reply); | |
2540 | ||
0547a9b3 | 2541 | if (data_len > 0) { |
a4ce40a9 | 2542 | struct ceph_osd_data *osd_data; |
0fff87ec | 2543 | |
a4ce40a9 AE |
2544 | /* |
2545 | * XXX This is assuming there is only one op containing | |
2546 | * XXX page data. Probably OK for reads, but this | |
2547 | * XXX ought to be done more generally. | |
2548 | */ | |
406e2c9f | 2549 | osd_data = osd_req_op_extent_osd_data(req, 0); |
0fff87ec | 2550 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
0fff87ec | 2551 | if (osd_data->pages && |
e0c59487 | 2552 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2553 | |
e0c59487 AE |
2554 | pr_warning("tid %lld reply has %d bytes " |
2555 | "we had only %llu bytes ready\n", | |
2556 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2557 | *skip = 1; |
2558 | ceph_msg_put(m); | |
2559 | m = NULL; | |
2560 | goto out; | |
2561 | } | |
2ac2b7a6 | 2562 | } |
0547a9b3 | 2563 | } |
5b3a4db3 | 2564 | *skip = 0; |
c16e7869 | 2565 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2566 | |
2567 | out: | |
2568 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2569 | return m; |
5b3a4db3 SW |
2570 | |
2571 | } | |
2572 | ||
2573 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2574 | struct ceph_msg_header *hdr, | |
2575 | int *skip) | |
2576 | { | |
2577 | struct ceph_osd *osd = con->private; | |
2578 | int type = le16_to_cpu(hdr->type); | |
2579 | int front = le32_to_cpu(hdr->front_len); | |
2580 | ||
1c20f2d2 | 2581 | *skip = 0; |
5b3a4db3 SW |
2582 | switch (type) { |
2583 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2584 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2585 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2586 | case CEPH_MSG_OSD_OPREPLY: |
2587 | return get_reply(con, hdr, skip); | |
2588 | default: | |
2589 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2590 | osd->o_osd); | |
2591 | *skip = 1; | |
2592 | return NULL; | |
2593 | } | |
f24e9980 SW |
2594 | } |
2595 | ||
2596 | /* | |
2597 | * Wrappers to refcount containing ceph_osd struct | |
2598 | */ | |
2599 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2600 | { | |
2601 | struct ceph_osd *osd = con->private; | |
2602 | if (get_osd(osd)) | |
2603 | return con; | |
2604 | return NULL; | |
2605 | } | |
2606 | ||
2607 | static void put_osd_con(struct ceph_connection *con) | |
2608 | { | |
2609 | struct ceph_osd *osd = con->private; | |
2610 | put_osd(osd); | |
2611 | } | |
2612 | ||
4e7a5dcd SW |
2613 | /* |
2614 | * authentication | |
2615 | */ | |
a3530df3 AE |
2616 | /* |
2617 | * Note: returned pointer is the address of a structure that's | |
2618 | * managed separately. Caller must *not* attempt to free it. | |
2619 | */ | |
2620 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2621 | int *proto, int force_new) |
4e7a5dcd SW |
2622 | { |
2623 | struct ceph_osd *o = con->private; | |
2624 | struct ceph_osd_client *osdc = o->o_osdc; | |
2625 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2626 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2627 | |
74f1869f | 2628 | if (force_new && auth->authorizer) { |
27859f97 | 2629 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2630 | auth->authorizer = NULL; |
2631 | } | |
27859f97 SW |
2632 | if (!auth->authorizer) { |
2633 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2634 | auth); | |
4e7a5dcd | 2635 | if (ret) |
a3530df3 | 2636 | return ERR_PTR(ret); |
27859f97 SW |
2637 | } else { |
2638 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2639 | auth); |
2640 | if (ret) | |
2641 | return ERR_PTR(ret); | |
4e7a5dcd | 2642 | } |
4e7a5dcd | 2643 | *proto = ac->protocol; |
74f1869f | 2644 | |
a3530df3 | 2645 | return auth; |
4e7a5dcd SW |
2646 | } |
2647 | ||
2648 | ||
2649 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2650 | { | |
2651 | struct ceph_osd *o = con->private; | |
2652 | struct ceph_osd_client *osdc = o->o_osdc; | |
2653 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2654 | ||
27859f97 | 2655 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2656 | } |
2657 | ||
9bd2e6f8 SW |
2658 | static int invalidate_authorizer(struct ceph_connection *con) |
2659 | { | |
2660 | struct ceph_osd *o = con->private; | |
2661 | struct ceph_osd_client *osdc = o->o_osdc; | |
2662 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2663 | ||
27859f97 | 2664 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2665 | return ceph_monc_validate_auth(&osdc->client->monc); |
2666 | } | |
4e7a5dcd | 2667 | |
9e32789f | 2668 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2669 | .get = get_osd_con, |
2670 | .put = put_osd_con, | |
2671 | .dispatch = dispatch, | |
4e7a5dcd SW |
2672 | .get_authorizer = get_authorizer, |
2673 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2674 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2675 | .alloc_msg = alloc_msg, |
81b024e7 | 2676 | .fault = osd_reset, |
f24e9980 | 2677 | }; |