4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
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10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_MDC
39 # include <linux/module.h>
40 # include <linux/kernel.h>
42 #include "../include/obd_class.h"
43 #include "mdc_internal.h"
44 #include "../include/lustre_fid.h"
46 /* mdc_setattr does its own semaphore handling */
47 static int mdc_reint(struct ptlrpc_request *request,
48 struct mdc_rpc_lock *rpc_lock,
53 request->rq_send_state = level;
55 mdc_get_rpc_lock(rpc_lock, NULL);
56 rc = ptlrpc_queue_wait(request);
57 mdc_put_rpc_lock(rpc_lock, NULL);
59 CDEBUG(D_INFO, "error in handling %d\n", rc);
60 else if (!req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY))
66 /* Find and cancel locally locks matched by inode @bits & @mode in the resource
67 * found by @fid. Found locks are added into @cancel list. Returns the amount of
68 * locks added to @cancels list. */
69 int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
70 struct list_head *cancels, ldlm_mode_t mode,
73 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
74 ldlm_policy_data_t policy = {};
75 struct ldlm_res_id res_id;
76 struct ldlm_resource *res;
79 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
80 * export) but disabled through procfs (flag in NS).
82 * This distinguishes from a case when ELC is not supported originally,
83 * when we still want to cancel locks in advance and just cancel them
84 * locally, without sending any RPC. */
85 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
88 fid_build_reg_res_name(fid, &res_id);
89 res = ldlm_resource_get(exp->exp_obd->obd_namespace,
93 LDLM_RESOURCE_ADDREF(res);
94 /* Initialize ibits lock policy. */
95 policy.l_inodebits.bits = bits;
96 count = ldlm_cancel_resource_local(res, cancels, &policy,
98 LDLM_RESOURCE_DELREF(res);
99 ldlm_resource_putref(res);
103 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
104 void *ea, int ealen, void *ea2, int ea2len,
105 struct ptlrpc_request **request, struct md_open_data **mod)
108 struct ptlrpc_request *req;
109 struct mdc_rpc_lock *rpc_lock;
110 struct obd_device *obd = exp->exp_obd;
114 LASSERT(op_data != NULL);
116 bits = MDS_INODELOCK_UPDATE;
117 if (op_data->op_attr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
118 bits |= MDS_INODELOCK_LOOKUP;
119 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
120 (fid_is_sane(&op_data->op_fid1)) &&
121 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET))
122 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
123 &cancels, LCK_EX, bits);
124 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
125 &RQF_MDS_REINT_SETATTR);
127 ldlm_lock_list_put(&cancels, l_bl_ast, count);
130 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
131 if ((op_data->op_flags & (MF_SOM_CHANGE | MF_EPOCH_OPEN)) == 0)
132 req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT,
134 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen);
135 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT,
138 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
140 ptlrpc_request_free(req);
144 rpc_lock = obd->u.cli.cl_rpc_lock;
146 if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
147 CDEBUG(D_INODE, "setting mtime "CFS_TIME_T
148 ", ctime "CFS_TIME_T"\n",
149 LTIME_S(op_data->op_attr.ia_mtime),
150 LTIME_S(op_data->op_attr.ia_ctime));
151 mdc_setattr_pack(req, op_data, ea, ealen, ea2, ea2len);
153 ptlrpc_request_set_replen(req);
154 if (mod && (op_data->op_flags & MF_EPOCH_OPEN) &&
155 req->rq_import->imp_replayable) {
156 LASSERT(*mod == NULL);
158 *mod = obd_mod_alloc();
160 DEBUG_REQ(D_ERROR, req, "Can't allocate md_open_data");
163 req->rq_cb_data = *mod;
164 (*mod)->mod_open_req = req;
165 req->rq_commit_cb = mdc_commit_open;
166 (*mod)->mod_is_create = true;
168 * Take an extra reference on \var mod, it protects \var
169 * mod from being freed on eviction (commit callback is
170 * called despite rq_replay flag).
171 * Will be put on mdc_done_writing().
177 rc = mdc_reint(req, rpc_lock, LUSTRE_IMP_FULL);
179 /* Save the obtained info in the original RPC for the replay case. */
180 if (rc == 0 && (op_data->op_flags & MF_EPOCH_OPEN)) {
181 struct mdt_ioepoch *epoch;
182 struct mdt_body *body;
184 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
185 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
186 LASSERT(epoch != NULL);
187 LASSERT(body != NULL);
188 epoch->handle = body->handle;
189 epoch->ioepoch = body->ioepoch;
190 req->rq_replay_cb = mdc_replay_open;
191 /** bug 3633, open may be committed and estale answer is not error */
192 } else if (rc == -ESTALE && (op_data->op_flags & MF_SOM_CHANGE)) {
194 } else if (rc == -ERESTARTSYS) {
198 if (rc && req->rq_commit_cb) {
199 /* Put an extra reference on \var mod on error case. */
200 if (mod != NULL && *mod != NULL)
202 req->rq_commit_cb(req);
207 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
208 const void *data, int datalen, int mode, __u32 uid, __u32 gid,
209 cfs_cap_t cap_effective, __u64 rdev,
210 struct ptlrpc_request **request)
212 struct ptlrpc_request *req;
214 int count, resends = 0;
215 struct obd_import *import = exp->exp_obd->u.cli.cl_import;
216 int generation = import->imp_generation;
219 /* For case if upper layer did not alloc fid, do it now. */
220 if (!fid_is_sane(&op_data->op_fid2)) {
222 * mdc_fid_alloc() may return errno 1 in case of switch to new
223 * sequence, handle this.
225 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data);
227 CERROR("Can't alloc new fid, rc %d\n", rc);
234 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
235 (fid_is_sane(&op_data->op_fid1)))
236 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
238 MDS_INODELOCK_UPDATE);
240 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
241 &RQF_MDS_REINT_CREATE_RMT_ACL);
243 ldlm_lock_list_put(&cancels, l_bl_ast, count);
246 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
247 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
248 op_data->op_namelen + 1);
249 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
250 data && datalen ? datalen : 0);
252 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
254 ptlrpc_request_free(req);
259 * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with
260 * tgt, for symlinks or lov MD data.
262 mdc_create_pack(req, op_data, data, datalen, mode, uid,
263 gid, cap_effective, rdev);
265 ptlrpc_request_set_replen(req);
267 /* ask ptlrpc not to resend on EINPROGRESS since we have our own retry
269 req->rq_no_retry_einprogress = 1;
272 req->rq_generation_set = 1;
273 req->rq_import_generation = generation;
274 req->rq_sent = get_seconds() + resends;
276 level = LUSTRE_IMP_FULL;
278 rc = mdc_reint(req, exp->exp_obd->u.cli.cl_rpc_lock, level);
280 /* Resend if we were told to. */
281 if (rc == -ERESTARTSYS) {
282 level = LUSTRE_IMP_RECOVER;
284 } else if (rc == -EINPROGRESS) {
285 /* Retry create infinitely until succeed or get other
287 ptlrpc_req_finished(req);
290 CDEBUG(D_HA, "%s: resend:%d create on "DFID"/"DFID"\n",
291 exp->exp_obd->obd_name, resends,
292 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2));
294 if (generation == import->imp_generation) {
297 CDEBUG(D_HA, "resend cross eviction\n");
300 } else if (rc == 0) {
301 struct mdt_body *body;
302 struct lustre_capa *capa;
304 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
306 if (body->valid & OBD_MD_FLMDSCAPA) {
307 capa = req_capsule_server_get(&req->rq_pill,
318 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
319 struct ptlrpc_request **request)
322 struct obd_device *obd = class_exp2obd(exp);
323 struct ptlrpc_request *req = *request;
326 LASSERT(req == NULL);
328 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
329 (fid_is_sane(&op_data->op_fid1)) &&
330 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET))
331 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
333 MDS_INODELOCK_UPDATE);
334 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
335 (fid_is_sane(&op_data->op_fid3)) &&
336 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK_NET))
337 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
340 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
341 &RQF_MDS_REINT_UNLINK);
343 ldlm_lock_list_put(&cancels, l_bl_ast, count);
346 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
347 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
348 op_data->op_namelen + 1);
350 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
352 ptlrpc_request_free(req);
356 mdc_unlink_pack(req, op_data);
358 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
359 obd->u.cli.cl_default_mds_easize);
360 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
361 obd->u.cli.cl_default_mds_cookiesize);
362 ptlrpc_request_set_replen(req);
366 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
367 if (rc == -ERESTARTSYS)
372 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
373 struct ptlrpc_request **request)
376 struct obd_device *obd = exp->exp_obd;
377 struct ptlrpc_request *req;
380 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
381 (fid_is_sane(&op_data->op_fid2)))
382 count = mdc_resource_get_unused(exp, &op_data->op_fid2,
384 MDS_INODELOCK_UPDATE);
385 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
386 (fid_is_sane(&op_data->op_fid1)))
387 count += mdc_resource_get_unused(exp, &op_data->op_fid1,
389 MDS_INODELOCK_UPDATE);
391 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK);
393 ldlm_lock_list_put(&cancels, l_bl_ast, count);
396 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
397 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
398 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
399 op_data->op_namelen + 1);
401 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
403 ptlrpc_request_free(req);
407 mdc_link_pack(req, op_data);
408 ptlrpc_request_set_replen(req);
410 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
412 if (rc == -ERESTARTSYS)
418 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
419 const char *old, int oldlen, const char *new, int newlen,
420 struct ptlrpc_request **request)
423 struct obd_device *obd = exp->exp_obd;
424 struct ptlrpc_request *req;
427 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
428 (fid_is_sane(&op_data->op_fid1)))
429 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
431 MDS_INODELOCK_UPDATE);
432 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
433 (fid_is_sane(&op_data->op_fid2)))
434 count += mdc_resource_get_unused(exp, &op_data->op_fid2,
436 MDS_INODELOCK_UPDATE);
437 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
438 (fid_is_sane(&op_data->op_fid3)))
439 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
441 MDS_INODELOCK_LOOKUP);
442 if ((op_data->op_flags & MF_MDC_CANCEL_FID4) &&
443 (fid_is_sane(&op_data->op_fid4)))
444 count += mdc_resource_get_unused(exp, &op_data->op_fid4,
448 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
449 &RQF_MDS_REINT_RENAME);
451 ldlm_lock_list_put(&cancels, l_bl_ast, count);
455 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
456 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
457 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1);
458 req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT, newlen+1);
460 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
462 ptlrpc_request_free(req);
466 if (exp_connect_cancelset(exp) && req)
467 ldlm_cli_cancel_list(&cancels, count, req, 0);
469 mdc_rename_pack(req, op_data, old, oldlen, new, newlen);
471 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
472 obd->u.cli.cl_default_mds_easize);
473 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
474 obd->u.cli.cl_default_mds_cookiesize);
475 ptlrpc_request_set_replen(req);
477 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
479 if (rc == -ERESTARTSYS)