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) 2011, 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.
64 int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
65 struct list_head *cancels, enum ldlm_mode mode,
68 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
69 union ldlm_policy_data policy = {};
70 struct ldlm_res_id res_id;
71 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.
81 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
84 fid_build_reg_res_name(fid, &res_id);
85 res = ldlm_resource_get(exp->exp_obd->obd_namespace,
89 LDLM_RESOURCE_ADDREF(res);
90 /* Initialize ibits lock policy. */
91 policy.l_inodebits.bits = bits;
92 count = ldlm_cancel_resource_local(res, cancels, &policy,
94 LDLM_RESOURCE_DELREF(res);
95 ldlm_resource_putref(res);
99 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
100 void *ea, size_t ealen, struct ptlrpc_request **request)
103 struct ptlrpc_request *req;
107 bits = MDS_INODELOCK_UPDATE;
108 if (op_data->op_attr.ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))
109 bits |= MDS_INODELOCK_LOOKUP;
110 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
111 (fid_is_sane(&op_data->op_fid1)))
112 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
113 &cancels, LCK_EX, bits);
114 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
115 &RQF_MDS_REINT_SETATTR);
117 ldlm_lock_list_put(&cancels, l_bl_ast, count);
120 req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT, 0);
121 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen);
122 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT, 0);
124 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
126 ptlrpc_request_free(req);
130 if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
131 CDEBUG(D_INODE, "setting mtime %ld, ctime %ld\n",
132 LTIME_S(op_data->op_attr.ia_mtime),
133 LTIME_S(op_data->op_attr.ia_ctime));
134 mdc_setattr_pack(req, op_data, ea, ealen);
136 ptlrpc_request_set_replen(req);
138 rc = mdc_reint(req, LUSTRE_IMP_FULL);
140 if (rc == -ERESTARTSYS)
148 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
149 const void *data, size_t datalen, umode_t mode,
150 uid_t uid, gid_t gid, cfs_cap_t cap_effective,
151 __u64 rdev, struct ptlrpc_request **request)
153 struct ptlrpc_request *req;
155 int count, resends = 0;
156 struct obd_import *import = exp->exp_obd->u.cli.cl_import;
157 int generation = import->imp_generation;
160 /* For case if upper layer did not alloc fid, do it now. */
161 if (!fid_is_sane(&op_data->op_fid2)) {
163 * mdc_fid_alloc() may return errno 1 in case of switch to new
164 * sequence, handle this.
166 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
173 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
174 (fid_is_sane(&op_data->op_fid1)))
175 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
177 MDS_INODELOCK_UPDATE);
179 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
180 &RQF_MDS_REINT_CREATE_ACL);
182 ldlm_lock_list_put(&cancels, l_bl_ast, count);
185 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
186 op_data->op_namelen + 1);
187 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
188 data && datalen ? datalen : 0);
190 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
192 ptlrpc_request_free(req);
197 * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with
198 * tgt, for symlinks or lov MD data.
200 mdc_create_pack(req, op_data, data, datalen, mode, uid,
201 gid, cap_effective, rdev);
203 ptlrpc_request_set_replen(req);
205 /* ask ptlrpc not to resend on EINPROGRESS since we have our own retry
208 req->rq_no_retry_einprogress = 1;
211 req->rq_generation_set = 1;
212 req->rq_import_generation = generation;
213 req->rq_sent = ktime_get_real_seconds() + resends;
215 level = LUSTRE_IMP_FULL;
217 rc = mdc_reint(req, level);
219 /* Resend if we were told to. */
220 if (rc == -ERESTARTSYS) {
221 level = LUSTRE_IMP_RECOVER;
223 } else if (rc == -EINPROGRESS) {
224 /* Retry create infinitely until succeed or get other
227 ptlrpc_req_finished(req);
230 CDEBUG(D_HA, "%s: resend:%d create on " DFID "/" DFID "\n",
231 exp->exp_obd->obd_name, resends,
232 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2));
234 if (generation == import->imp_generation) {
237 CDEBUG(D_HA, "resend cross eviction\n");
246 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
247 struct ptlrpc_request **request)
250 struct obd_device *obd = class_exp2obd(exp);
251 struct ptlrpc_request *req = *request;
256 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
257 (fid_is_sane(&op_data->op_fid1)))
258 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
260 MDS_INODELOCK_UPDATE);
261 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
262 (fid_is_sane(&op_data->op_fid3)))
263 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
266 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
267 &RQF_MDS_REINT_UNLINK);
269 ldlm_lock_list_put(&cancels, l_bl_ast, count);
272 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
273 op_data->op_namelen + 1);
275 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
277 ptlrpc_request_free(req);
281 mdc_unlink_pack(req, op_data);
283 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
284 obd->u.cli.cl_default_mds_easize);
285 ptlrpc_request_set_replen(req);
289 rc = mdc_reint(req, LUSTRE_IMP_FULL);
290 if (rc == -ERESTARTSYS)
295 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
296 struct ptlrpc_request **request)
299 struct ptlrpc_request *req;
302 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
303 (fid_is_sane(&op_data->op_fid2)))
304 count = mdc_resource_get_unused(exp, &op_data->op_fid2,
306 MDS_INODELOCK_UPDATE);
307 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
308 (fid_is_sane(&op_data->op_fid1)))
309 count += mdc_resource_get_unused(exp, &op_data->op_fid1,
311 MDS_INODELOCK_UPDATE);
313 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK);
315 ldlm_lock_list_put(&cancels, l_bl_ast, count);
318 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
319 op_data->op_namelen + 1);
321 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
323 ptlrpc_request_free(req);
327 mdc_link_pack(req, op_data);
328 ptlrpc_request_set_replen(req);
330 rc = mdc_reint(req, LUSTRE_IMP_FULL);
332 if (rc == -ERESTARTSYS)
338 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
339 const char *old, size_t oldlen, const char *new, size_t newlen,
340 struct ptlrpc_request **request)
343 struct obd_device *obd = exp->exp_obd;
344 struct ptlrpc_request *req;
347 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
348 (fid_is_sane(&op_data->op_fid1)))
349 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
351 MDS_INODELOCK_UPDATE);
352 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
353 (fid_is_sane(&op_data->op_fid2)))
354 count += mdc_resource_get_unused(exp, &op_data->op_fid2,
356 MDS_INODELOCK_UPDATE);
357 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
358 (fid_is_sane(&op_data->op_fid3)))
359 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
361 MDS_INODELOCK_LOOKUP);
362 if ((op_data->op_flags & MF_MDC_CANCEL_FID4) &&
363 (fid_is_sane(&op_data->op_fid4)))
364 count += mdc_resource_get_unused(exp, &op_data->op_fid4,
368 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
369 op_data->op_cli_flags & CLI_MIGRATE ?
370 &RQF_MDS_REINT_MIGRATE : &RQF_MDS_REINT_RENAME);
372 ldlm_lock_list_put(&cancels, l_bl_ast, count);
376 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1);
377 req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT,
380 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
382 ptlrpc_request_free(req);
386 if (op_data->op_cli_flags & CLI_MIGRATE && op_data->op_data) {
387 struct md_open_data *mod = op_data->op_data;
389 LASSERTF(mod->mod_open_req &&
390 mod->mod_open_req->rq_type != LI_POISON,
391 "POISONED open %p!\n", mod->mod_open_req);
393 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
395 * We no longer want to preserve this open for replay even
396 * though the open was committed. b=3632, b=3633
398 spin_lock(&mod->mod_open_req->rq_lock);
399 mod->mod_open_req->rq_replay = 0;
400 spin_unlock(&mod->mod_open_req->rq_lock);
403 if (exp_connect_cancelset(exp) && req)
404 ldlm_cli_cancel_list(&cancels, count, req, 0);
406 mdc_rename_pack(req, op_data, old, oldlen, new, newlen);
408 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
409 obd->u.cli.cl_default_mds_easize);
410 ptlrpc_request_set_replen(req);
412 rc = mdc_reint(req, LUSTRE_IMP_FULL);
414 if (rc == -ERESTARTSYS)