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,
8 * as published by the Free Software Foundation.
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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_MDC
35 #include <linux/module.h>
36 #include <linux/kernel.h>
38 #include <obd_class.h>
39 #include "mdc_internal.h"
40 #include <lustre_fid.h>
42 /* mdc_setattr does its own semaphore handling */
43 static int mdc_reint(struct ptlrpc_request *request, int level)
47 request->rq_send_state = level;
49 mdc_get_mod_rpc_slot(request, NULL);
50 rc = ptlrpc_queue_wait(request);
51 mdc_put_mod_rpc_slot(request, NULL);
53 CDEBUG(D_INFO, "error in handling %d\n", rc);
54 else if (!req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY)) {
60 /* Find and cancel locally locks matched by inode @bits & @mode in the resource
61 * found by @fid. Found locks are added into @cancel list. Returns the amount of
62 * locks added to @cancels list. */
63 int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
64 struct list_head *cancels, enum ldlm_mode mode,
67 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
68 union ldlm_policy_data policy = { {0} };
69 struct ldlm_res_id res_id;
70 struct ldlm_resource *res;
74 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
75 * export) but disabled through procfs (flag in NS).
77 * This distinguishes from a case when ELC is not supported originally,
78 * when we still want to cancel locks in advance and just cancel them
79 * locally, without sending any RPC. */
80 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
83 fid_build_reg_res_name(fid, &res_id);
84 res = ldlm_resource_get(exp->exp_obd->obd_namespace,
88 LDLM_RESOURCE_ADDREF(res);
89 /* Initialize ibits lock policy. */
90 policy.l_inodebits.bits = bits;
91 count = ldlm_cancel_resource_local(res, cancels, &policy,
93 LDLM_RESOURCE_DELREF(res);
94 ldlm_resource_putref(res);
98 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
99 void *ea, size_t ealen, struct ptlrpc_request **request)
101 struct list_head cancels = LIST_HEAD_INIT(cancels);
102 struct ptlrpc_request *req;
107 LASSERT(op_data != NULL);
109 bits = MDS_INODELOCK_UPDATE;
110 if (op_data->op_attr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
111 bits |= MDS_INODELOCK_LOOKUP;
112 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
113 (fid_is_sane(&op_data->op_fid1)))
114 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
115 &cancels, LCK_EX, bits);
116 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
117 &RQF_MDS_REINT_SETATTR);
119 ldlm_lock_list_put(&cancels, l_bl_ast, count);
123 req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT, 0);
124 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen);
125 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT, 0);
127 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
129 ptlrpc_request_free(req);
133 if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
134 CDEBUG(D_INODE, "setting mtime "CFS_TIME_T
135 ", ctime "CFS_TIME_T"\n",
136 LTIME_S(op_data->op_attr.ia_mtime),
137 LTIME_S(op_data->op_attr.ia_ctime));
138 mdc_setattr_pack(req, op_data, ea, ealen);
140 ptlrpc_request_set_replen(req);
142 rc = mdc_reint(req, LUSTRE_IMP_FULL);
143 if (rc == -ERESTARTSYS)
151 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
152 const void *data, size_t datalen,
153 umode_t mode, uid_t uid, gid_t gid,
154 cfs_cap_t cap_effective, __u64 rdev,
155 struct ptlrpc_request **request)
157 struct ptlrpc_request *req;
159 int count, resends = 0;
160 struct obd_import *import = exp->exp_obd->u.cli.cl_import;
161 int generation = import->imp_generation;
162 struct list_head cancels = LIST_HEAD_INIT(cancels);
165 /* For case if upper layer did not alloc fid, do it now. */
166 if (!fid_is_sane(&op_data->op_fid2)) {
168 * mdc_fid_alloc() may return errno 1 in case of switch to new
169 * sequence, handle this.
171 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
178 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
179 (fid_is_sane(&op_data->op_fid1)))
180 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
182 MDS_INODELOCK_UPDATE);
184 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
185 &RQF_MDS_REINT_CREATE_ACL);
187 ldlm_lock_list_put(&cancels, l_bl_ast, count);
191 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
192 op_data->op_namelen + 1);
193 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
194 data && datalen ? datalen : 0);
196 req_capsule_set_size(&req->rq_pill, &RMF_FILE_SECCTX_NAME,
197 RCL_CLIENT, op_data->op_file_secctx_name != NULL ?
198 strlen(op_data->op_file_secctx_name) + 1 : 0);
200 req_capsule_set_size(&req->rq_pill, &RMF_FILE_SECCTX, RCL_CLIENT,
201 op_data->op_file_secctx_size);
203 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
205 ptlrpc_request_free(req);
210 * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with
211 * tgt, for symlinks or lov MD data.
213 mdc_create_pack(req, op_data, data, datalen, mode, uid,
214 gid, cap_effective, rdev);
216 ptlrpc_request_set_replen(req);
218 /* ask ptlrpc not to resend on EINPROGRESS since we have our own retry
220 req->rq_no_retry_einprogress = 1;
223 req->rq_generation_set = 1;
224 req->rq_import_generation = generation;
225 req->rq_sent = cfs_time_current_sec() + resends;
227 level = LUSTRE_IMP_FULL;
229 rc = mdc_reint(req, level);
231 /* Resend if we were told to. */
232 if (rc == -ERESTARTSYS) {
233 level = LUSTRE_IMP_RECOVER;
235 } else if (rc == -EINPROGRESS) {
236 /* Retry create infinitely until succeed or get other
238 ptlrpc_req_finished(req);
241 CDEBUG(D_HA, "%s: resend:%d create on "DFID"/"DFID"\n",
242 exp->exp_obd->obd_name, resends,
243 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2));
245 if (generation == import->imp_generation) {
248 CDEBUG(D_HA, "resend cross eviction\n");
257 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
258 struct ptlrpc_request **request)
260 struct list_head cancels = LIST_HEAD_INIT(cancels);
261 struct obd_device *obd = class_exp2obd(exp);
262 struct ptlrpc_request *req = *request;
266 LASSERT(req == NULL);
268 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
269 (fid_is_sane(&op_data->op_fid1)))
270 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
272 MDS_INODELOCK_UPDATE);
273 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
274 (fid_is_sane(&op_data->op_fid3)))
275 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
278 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
279 &RQF_MDS_REINT_UNLINK);
281 ldlm_lock_list_put(&cancels, l_bl_ast, count);
285 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
286 op_data->op_namelen + 1);
288 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
290 ptlrpc_request_free(req);
294 mdc_unlink_pack(req, op_data);
296 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
297 obd->u.cli.cl_default_mds_easize);
298 ptlrpc_request_set_replen(req);
302 rc = mdc_reint(req, LUSTRE_IMP_FULL);
303 if (rc == -ERESTARTSYS)
308 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
309 struct ptlrpc_request **request)
311 struct list_head cancels = LIST_HEAD_INIT(cancels);
312 struct ptlrpc_request *req;
316 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
317 (fid_is_sane(&op_data->op_fid2)))
318 count = mdc_resource_get_unused(exp, &op_data->op_fid2,
320 MDS_INODELOCK_UPDATE);
321 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
322 (fid_is_sane(&op_data->op_fid1)))
323 count += mdc_resource_get_unused(exp, &op_data->op_fid1,
325 MDS_INODELOCK_UPDATE);
327 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK);
329 ldlm_lock_list_put(&cancels, l_bl_ast, count);
333 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
334 op_data->op_namelen + 1);
336 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
338 ptlrpc_request_free(req);
342 mdc_link_pack(req, op_data);
343 ptlrpc_request_set_replen(req);
345 rc = mdc_reint(req, LUSTRE_IMP_FULL);
347 if (rc == -ERESTARTSYS)
353 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
354 const char *old, size_t oldlen, const char *new, size_t newlen,
355 struct ptlrpc_request **request)
357 struct list_head cancels = LIST_HEAD_INIT(cancels);
358 struct obd_device *obd = exp->exp_obd;
359 struct ptlrpc_request *req;
363 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
364 (fid_is_sane(&op_data->op_fid1)))
365 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
367 MDS_INODELOCK_UPDATE);
368 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
369 (fid_is_sane(&op_data->op_fid2)))
370 count += mdc_resource_get_unused(exp, &op_data->op_fid2,
372 MDS_INODELOCK_UPDATE);
373 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
374 (fid_is_sane(&op_data->op_fid3)))
375 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
377 MDS_INODELOCK_LOOKUP);
378 if ((op_data->op_flags & MF_MDC_CANCEL_FID4) &&
379 (fid_is_sane(&op_data->op_fid4)))
380 count += mdc_resource_get_unused(exp, &op_data->op_fid4,
384 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
385 op_data->op_cli_flags & CLI_MIGRATE ?
386 &RQF_MDS_REINT_MIGRATE : &RQF_MDS_REINT_RENAME);
388 ldlm_lock_list_put(&cancels, l_bl_ast, count);
392 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1);
393 req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT, newlen+1);
395 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
397 ptlrpc_request_free(req);
401 if (op_data->op_cli_flags & CLI_MIGRATE && op_data->op_data != NULL) {
402 struct md_open_data *mod = op_data->op_data;
404 LASSERTF(mod->mod_open_req != NULL &&
405 mod->mod_open_req->rq_type != LI_POISON,
406 "POISONED open %p!\n", mod->mod_open_req);
408 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
409 /* We no longer want to preserve this open for replay even
410 * though the open was committed. b=3632, b=3633 */
411 spin_lock(&mod->mod_open_req->rq_lock);
412 mod->mod_open_req->rq_replay = 0;
413 spin_unlock(&mod->mod_open_req->rq_lock);
416 if (exp_connect_cancelset(exp) && req)
417 ldlm_cli_cancel_list(&cancels, count, req, 0);
419 mdc_rename_pack(req, op_data, old, oldlen, new, newlen);
421 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
422 obd->u.cli.cl_default_mds_easize);
423 ptlrpc_request_set_replen(req);
425 rc = mdc_reint(req, LUSTRE_IMP_FULL);
427 if (rc == -ERESTARTSYS)