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
17 * version 2 along with this program; If not, see
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) 2012, 2013, 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 <obd_class.h>
43 #include "mdc_internal.h"
44 #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 = { {0} };
75 struct ldlm_res_id res_id;
76 struct ldlm_resource *res;
80 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
81 * export) but disabled through procfs (flag in NS).
83 * This distinguishes from a case when ELC is not supported originally,
84 * when we still want to cancel locks in advance and just cancel them
85 * locally, without sending any RPC. */
86 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
89 fid_build_reg_res_name(fid, &res_id);
90 res = ldlm_resource_get(exp->exp_obd->obd_namespace,
94 LDLM_RESOURCE_ADDREF(res);
95 /* Initialize ibits lock policy. */
96 policy.l_inodebits.bits = bits;
97 count = ldlm_cancel_resource_local(res, cancels, &policy,
99 LDLM_RESOURCE_DELREF(res);
100 ldlm_resource_putref(res);
104 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
105 void *ea, int ealen, void *ea2, int ea2len,
106 struct ptlrpc_request **request, struct md_open_data **mod)
108 struct list_head cancels = LIST_HEAD_INIT(cancels);
109 struct ptlrpc_request *req;
110 struct mdc_rpc_lock *rpc_lock;
111 struct obd_device *obd = exp->exp_obd;
116 LASSERT(op_data != NULL);
118 bits = MDS_INODELOCK_UPDATE;
119 if (op_data->op_attr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
120 bits |= MDS_INODELOCK_LOOKUP;
121 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
122 (fid_is_sane(&op_data->op_fid1)))
123 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
124 &cancels, LCK_EX, bits);
125 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
126 &RQF_MDS_REINT_SETATTR);
128 ldlm_lock_list_put(&cancels, l_bl_ast, count);
131 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
132 if ((op_data->op_flags & (MF_SOM_CHANGE | MF_EPOCH_OPEN)) == 0)
133 req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT,
135 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen);
136 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT,
139 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
141 ptlrpc_request_free(req);
145 rpc_lock = obd->u.cli.cl_rpc_lock;
147 if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
148 CDEBUG(D_INODE, "setting mtime "CFS_TIME_T
149 ", ctime "CFS_TIME_T"\n",
150 LTIME_S(op_data->op_attr.ia_mtime),
151 LTIME_S(op_data->op_attr.ia_ctime));
152 mdc_setattr_pack(req, op_data, ea, ealen, ea2, ea2len);
154 ptlrpc_request_set_replen(req);
155 if (mod && (op_data->op_flags & MF_EPOCH_OPEN) &&
156 req->rq_import->imp_replayable)
158 LASSERT(*mod == NULL);
160 *mod = obd_mod_alloc();
162 DEBUG_REQ(D_ERROR, req, "Can't allocate "
166 req->rq_cb_data = *mod;
167 (*mod)->mod_open_req = req;
168 req->rq_commit_cb = mdc_commit_open;
169 (*mod)->mod_is_create = true;
171 * Take an extra reference on \var mod, it protects \var
172 * mod from being freed on eviction (commit callback is
173 * called despite rq_replay flag).
174 * Will be put on mdc_done_writing().
180 rc = mdc_reint(req, rpc_lock, LUSTRE_IMP_FULL);
182 /* Save the obtained info in the original RPC for the replay case. */
183 if (rc == 0 && (op_data->op_flags & MF_EPOCH_OPEN)) {
184 struct mdt_ioepoch *epoch;
185 struct mdt_body *body;
187 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
188 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
189 LASSERT(epoch != NULL);
190 LASSERT(body != NULL);
191 epoch->handle = body->mbo_handle;
192 epoch->ioepoch = body->mbo_ioepoch;
193 req->rq_replay_cb = mdc_replay_open;
194 /** bug 3633, open may be committed and estale answer is not error */
195 } else if (rc == -ESTALE && (op_data->op_flags & MF_SOM_CHANGE)) {
197 } else if (rc == -ERESTARTSYS) {
201 if (rc && req->rq_commit_cb) {
202 /* Put an extra reference on \var mod on error case. */
203 if (mod != NULL && *mod != NULL)
205 req->rq_commit_cb(req);
210 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
211 const void *data, int datalen, int mode, __u32 uid, __u32 gid,
212 cfs_cap_t cap_effective, __u64 rdev,
213 struct ptlrpc_request **request)
215 struct ptlrpc_request *req;
217 int count, resends = 0;
218 struct obd_import *import = exp->exp_obd->u.cli.cl_import;
219 int generation = import->imp_generation;
220 struct list_head cancels = LIST_HEAD_INIT(cancels);
223 /* For case if upper layer did not alloc fid, do it now. */
224 if (!fid_is_sane(&op_data->op_fid2)) {
226 * mdc_fid_alloc() may return errno 1 in case of switch to new
227 * sequence, handle this.
229 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
236 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
237 (fid_is_sane(&op_data->op_fid1)))
238 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
240 MDS_INODELOCK_UPDATE);
242 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
243 &RQF_MDS_REINT_CREATE_RMT_ACL);
245 ldlm_lock_list_put(&cancels, l_bl_ast, count);
248 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
249 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
250 op_data->op_namelen + 1);
251 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
252 data && datalen ? datalen : 0);
254 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
256 ptlrpc_request_free(req);
261 * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with
262 * tgt, for symlinks or lov MD data.
264 mdc_create_pack(req, op_data, data, datalen, mode, uid,
265 gid, cap_effective, rdev);
267 ptlrpc_request_set_replen(req);
269 /* ask ptlrpc not to resend on EINPROGRESS since we have our own retry
271 req->rq_no_retry_einprogress = 1;
274 req->rq_generation_set = 1;
275 req->rq_import_generation = generation;
276 req->rq_sent = cfs_time_current_sec() + resends;
278 level = LUSTRE_IMP_FULL;
280 rc = mdc_reint(req, exp->exp_obd->u.cli.cl_rpc_lock, level);
282 /* Resend if we were told to. */
283 if (rc == -ERESTARTSYS) {
284 level = LUSTRE_IMP_RECOVER;
286 } else if (rc == -EINPROGRESS) {
287 /* Retry create infinitely until succeed or get other
289 ptlrpc_req_finished(req);
292 CDEBUG(D_HA, "%s: resend:%d create on "DFID"/"DFID"\n",
293 exp->exp_obd->obd_name, resends,
294 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2));
296 if (generation == import->imp_generation) {
299 CDEBUG(D_HA, "resend cross eviction\n");
302 } else if (rc == 0) {
303 struct mdt_body *body;
304 struct lustre_capa *capa;
306 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
308 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
309 capa = req_capsule_server_get(&req->rq_pill,
320 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
321 struct ptlrpc_request **request)
323 struct list_head cancels = LIST_HEAD_INIT(cancels);
324 struct obd_device *obd = class_exp2obd(exp);
325 struct ptlrpc_request *req = *request;
329 LASSERT(req == NULL);
331 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
332 (fid_is_sane(&op_data->op_fid1)))
333 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
335 MDS_INODELOCK_UPDATE);
336 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
337 (fid_is_sane(&op_data->op_fid3)))
338 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
341 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
342 &RQF_MDS_REINT_UNLINK);
344 ldlm_lock_list_put(&cancels, l_bl_ast, count);
347 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
348 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
349 op_data->op_namelen + 1);
351 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
353 ptlrpc_request_free(req);
357 mdc_unlink_pack(req, op_data);
359 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
360 obd->u.cli.cl_default_mds_easize);
361 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
362 obd->u.cli.cl_default_mds_cookiesize);
363 ptlrpc_request_set_replen(req);
367 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
368 if (rc == -ERESTARTSYS)
373 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
374 struct ptlrpc_request **request)
376 struct list_head cancels = LIST_HEAD_INIT(cancels);
377 struct obd_device *obd = exp->exp_obd;
378 struct ptlrpc_request *req;
382 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
383 (fid_is_sane(&op_data->op_fid2)))
384 count = mdc_resource_get_unused(exp, &op_data->op_fid2,
386 MDS_INODELOCK_UPDATE);
387 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
388 (fid_is_sane(&op_data->op_fid1)))
389 count += mdc_resource_get_unused(exp, &op_data->op_fid1,
391 MDS_INODELOCK_UPDATE);
393 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK);
395 ldlm_lock_list_put(&cancels, l_bl_ast, count);
398 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
399 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
400 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
401 op_data->op_namelen + 1);
403 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
405 ptlrpc_request_free(req);
409 mdc_link_pack(req, op_data);
410 ptlrpc_request_set_replen(req);
412 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
414 if (rc == -ERESTARTSYS)
420 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
421 const char *old, int oldlen, const char *new, int newlen,
422 struct ptlrpc_request **request)
424 struct list_head cancels = LIST_HEAD_INIT(cancels);
425 struct obd_device *obd = exp->exp_obd;
426 struct ptlrpc_request *req;
430 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
431 (fid_is_sane(&op_data->op_fid1)))
432 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
434 MDS_INODELOCK_UPDATE);
435 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
436 (fid_is_sane(&op_data->op_fid2)))
437 count += mdc_resource_get_unused(exp, &op_data->op_fid2,
439 MDS_INODELOCK_UPDATE);
440 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
441 (fid_is_sane(&op_data->op_fid3)))
442 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
444 MDS_INODELOCK_LOOKUP);
445 if ((op_data->op_flags & MF_MDC_CANCEL_FID4) &&
446 (fid_is_sane(&op_data->op_fid4)))
447 count += mdc_resource_get_unused(exp, &op_data->op_fid4,
451 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
452 &RQF_MDS_REINT_RENAME);
454 ldlm_lock_list_put(&cancels, l_bl_ast, count);
458 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
459 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
460 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1);
461 req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT, newlen+1);
463 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
465 ptlrpc_request_free(req);
469 if (exp_connect_cancelset(exp) && req)
470 ldlm_cli_cancel_list(&cancels, count, req, 0);
472 mdc_rename_pack(req, op_data, old, oldlen, new, newlen);
474 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
475 obd->u.cli.cl_default_mds_easize);
476 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
477 obd->u.cli.cl_default_mds_cookiesize);
478 ptlrpc_request_set_replen(req);
480 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
482 if (rc == -ERESTARTSYS)