1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 # define EXPORT_SYMTAB
40 #define DEBUG_SUBSYSTEM S_MDC
43 #ifndef AUTOCONF_INCLUDED
44 # include <linux/config.h>
46 # include <linux/module.h>
47 # include <linux/kernel.h>
49 # include <liblustre.h>
52 #include <obd_class.h>
53 #include "mdc_internal.h"
54 #include <lustre_fid.h>
56 /* mdc_setattr does its own semaphore handling */
57 static int mdc_reint(struct ptlrpc_request *request,
58 struct mdc_rpc_lock *rpc_lock,
63 request->rq_send_state = level;
65 mdc_get_rpc_lock(rpc_lock, NULL);
66 rc = ptlrpc_queue_wait(request);
67 mdc_put_rpc_lock(rpc_lock, NULL);
69 CDEBUG(D_INFO, "error in handling %d\n", rc);
70 else if (!req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY)) {
76 /* Find and cancel locally locks matched by inode @bits & @mode in the resource
77 * found by @fid. Found locks are added into @cancel list. Returns the amount of
78 * locks added to @cancels list. */
79 int mdc_resource_get_unused(struct obd_export *exp, struct lu_fid *fid,
80 cfs_list_t *cancels, ldlm_mode_t mode,
83 ldlm_policy_data_t policy = {{0}};
84 struct ldlm_res_id res_id;
85 struct ldlm_resource *res;
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 static int mdc_prep_elc_req(struct obd_export *exp, struct ptlrpc_request *req,
105 cfs_list_t *cancels, int count)
107 return ldlm_prep_elc_req(exp, req, LUSTRE_MDS_VERSION, MDS_REINT,
111 int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
112 void *ea, int ealen, void *ea2, int ea2len,
113 struct ptlrpc_request **request, struct md_open_data **mod)
115 CFS_LIST_HEAD(cancels);
116 struct ptlrpc_request *req;
117 struct mdc_rpc_lock *rpc_lock;
118 struct obd_device *obd = exp->exp_obd;
123 LASSERT(op_data != NULL);
125 bits = MDS_INODELOCK_UPDATE;
126 if (op_data->op_attr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
127 bits |= MDS_INODELOCK_LOOKUP;
128 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
129 (fid_is_sane(&op_data->op_fid1)) &&
130 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK))
131 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
132 &cancels, LCK_EX, bits);
133 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
134 &RQF_MDS_REINT_SETATTR);
136 ldlm_lock_list_put(&cancels, l_bl_ast, count);
139 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
140 if ((op_data->op_flags & (MF_SOM_CHANGE | MF_EPOCH_OPEN)) == 0)
141 req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT,
143 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen);
144 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT,
147 rc = mdc_prep_elc_req(exp, req, &cancels, count);
149 ptlrpc_request_free(req);
153 rpc_lock = obd->u.cli.cl_rpc_lock;
155 if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
156 CDEBUG(D_INODE, "setting mtime "CFS_TIME_T
157 ", ctime "CFS_TIME_T"\n",
158 LTIME_S(op_data->op_attr.ia_mtime),
159 LTIME_S(op_data->op_attr.ia_ctime));
160 mdc_setattr_pack(req, op_data, ea, ealen, ea2, ea2len);
162 ptlrpc_request_set_replen(req);
163 if (mod && (op_data->op_flags & MF_EPOCH_OPEN) &&
164 req->rq_import->imp_replayable)
166 LASSERT(*mod == NULL);
168 *mod = obd_mod_alloc();
170 DEBUG_REQ(D_ERROR, req, "Can't allocate "
174 req->rq_cb_data = *mod;
175 (*mod)->mod_open_req = req;
176 req->rq_commit_cb = mdc_commit_open;
178 * Take an extra reference on \var mod, it protects \var
179 * mod from being freed on eviction (commit callback is
180 * called despite rq_replay flag).
181 * Will be put on mdc_done_writing().
187 rc = mdc_reint(req, rpc_lock, LUSTRE_IMP_FULL);
189 /* Save the obtained info in the original RPC for the replay case. */
190 if (rc == 0 && (op_data->op_flags & MF_EPOCH_OPEN)) {
191 struct mdt_ioepoch *epoch;
192 struct mdt_body *body;
194 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
195 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
196 LASSERT(epoch != NULL);
197 LASSERT(body != NULL);
198 epoch->handle = body->handle;
199 epoch->ioepoch = body->ioepoch;
200 req->rq_replay_cb = mdc_replay_open;
201 /** bug 3633, open may be committed and estale answer is not error */
202 } else if (rc == -ESTALE && (op_data->op_flags & MF_SOM_CHANGE)) {
204 } else if (rc == -ERESTARTSYS) {
208 if (rc && req->rq_commit_cb) {
209 /* Put an extra reference on \var mod on error case. */
211 req->rq_commit_cb(req);
216 int mdc_create(struct obd_export *exp, struct md_op_data *op_data,
217 const void *data, int datalen, int mode, __u32 uid, __u32 gid,
218 cfs_cap_t cap_effective, __u64 rdev,
219 struct ptlrpc_request **request)
221 struct ptlrpc_request *req;
224 CFS_LIST_HEAD(cancels);
227 /* For case if upper layer did not alloc fid, do it now. */
228 if (!fid_is_sane(&op_data->op_fid2)) {
230 * mdc_fid_alloc() may return errno 1 in case of switch to new
231 * sequence, handle this.
233 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data);
235 CERROR("Can't alloc new fid, rc %d\n", rc);
240 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
241 (fid_is_sane(&op_data->op_fid1)))
242 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
244 MDS_INODELOCK_UPDATE);
246 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
247 &RQF_MDS_REINT_CREATE_RMT_ACL);
249 ldlm_lock_list_put(&cancels, l_bl_ast, count);
252 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
253 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
254 op_data->op_namelen + 1);
255 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
256 data && datalen ? datalen : 0);
258 rc = mdc_prep_elc_req(exp, req, &cancels, count);
260 ptlrpc_request_free(req);
265 * mdc_create_pack() fills msg->bufs[1] with name and msg->bufs[2] with
266 * tgt, for symlinks or lov MD data.
268 mdc_create_pack(req, op_data, data, datalen, mode, uid,
269 gid, cap_effective, rdev);
271 ptlrpc_request_set_replen(req);
273 level = LUSTRE_IMP_FULL;
275 rc = mdc_reint(req, exp->exp_obd->u.cli.cl_rpc_lock, level);
277 /* Resend if we were told to. */
278 if (rc == -ERESTARTSYS) {
279 level = LUSTRE_IMP_RECOVER;
281 } else if (rc == 0) {
282 struct mdt_body *body;
283 struct lustre_capa *capa;
285 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
287 if (body->valid & OBD_MD_FLMDSCAPA) {
288 capa = req_capsule_server_get(&req->rq_pill,
299 int mdc_unlink(struct obd_export *exp, struct md_op_data *op_data,
300 struct ptlrpc_request **request)
302 CFS_LIST_HEAD(cancels);
303 struct obd_device *obd = class_exp2obd(exp);
304 struct ptlrpc_request *req = *request;
308 LASSERT(req == NULL);
310 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
311 (fid_is_sane(&op_data->op_fid1)) &&
312 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK))
313 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
315 MDS_INODELOCK_UPDATE);
316 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
317 (fid_is_sane(&op_data->op_fid3)) &&
318 !OBD_FAIL_CHECK(OBD_FAIL_LDLM_BL_CALLBACK))
319 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
322 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
323 &RQF_MDS_REINT_UNLINK);
325 ldlm_lock_list_put(&cancels, l_bl_ast, count);
328 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
329 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
330 op_data->op_namelen + 1);
332 rc = mdc_prep_elc_req(exp, req, &cancels, count);
334 ptlrpc_request_free(req);
338 mdc_unlink_pack(req, op_data);
340 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
341 obd->u.cli.cl_max_mds_easize);
342 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
343 obd->u.cli.cl_max_mds_cookiesize);
344 ptlrpc_request_set_replen(req);
348 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
349 if (rc == -ERESTARTSYS)
354 int mdc_link(struct obd_export *exp, struct md_op_data *op_data,
355 struct ptlrpc_request **request)
357 CFS_LIST_HEAD(cancels);
358 struct obd_device *obd = exp->exp_obd;
359 struct ptlrpc_request *req;
363 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
364 (fid_is_sane(&op_data->op_fid2)))
365 count = mdc_resource_get_unused(exp, &op_data->op_fid2,
367 MDS_INODELOCK_UPDATE);
368 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
369 (fid_is_sane(&op_data->op_fid1)))
370 count += mdc_resource_get_unused(exp, &op_data->op_fid1,
372 MDS_INODELOCK_UPDATE);
374 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_LINK);
376 ldlm_lock_list_put(&cancels, l_bl_ast, count);
379 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
380 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
381 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
382 op_data->op_namelen + 1);
384 rc = mdc_prep_elc_req(exp, req, &cancels, count);
386 ptlrpc_request_free(req);
390 mdc_link_pack(req, op_data);
391 ptlrpc_request_set_replen(req);
393 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
395 if (rc == -ERESTARTSYS)
401 int mdc_rename(struct obd_export *exp, struct md_op_data *op_data,
402 const char *old, int oldlen, const char *new, int newlen,
403 struct ptlrpc_request **request)
405 CFS_LIST_HEAD(cancels);
406 struct obd_device *obd = exp->exp_obd;
407 struct ptlrpc_request *req;
411 if ((op_data->op_flags & MF_MDC_CANCEL_FID1) &&
412 (fid_is_sane(&op_data->op_fid1)))
413 count = mdc_resource_get_unused(exp, &op_data->op_fid1,
415 MDS_INODELOCK_UPDATE);
416 if ((op_data->op_flags & MF_MDC_CANCEL_FID2) &&
417 (fid_is_sane(&op_data->op_fid2)))
418 count += mdc_resource_get_unused(exp, &op_data->op_fid2,
420 MDS_INODELOCK_UPDATE);
421 if ((op_data->op_flags & MF_MDC_CANCEL_FID3) &&
422 (fid_is_sane(&op_data->op_fid3)))
423 count += mdc_resource_get_unused(exp, &op_data->op_fid3,
425 MDS_INODELOCK_LOOKUP);
426 if ((op_data->op_flags & MF_MDC_CANCEL_FID4) &&
427 (fid_is_sane(&op_data->op_fid4)))
428 count += mdc_resource_get_unused(exp, &op_data->op_fid4,
432 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
433 &RQF_MDS_REINT_RENAME);
435 ldlm_lock_list_put(&cancels, l_bl_ast, count);
439 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
440 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
441 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, oldlen + 1);
442 req_capsule_set_size(&req->rq_pill, &RMF_SYMTGT, RCL_CLIENT, newlen+1);
444 rc = mdc_prep_elc_req(exp, req, &cancels, count);
446 ptlrpc_request_free(req);
450 if (exp_connect_cancelset(exp) && req)
451 ldlm_cli_cancel_list(&cancels, count, req, 0);
453 mdc_rename_pack(req, op_data, old, oldlen, new, newlen);
455 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
456 obd->u.cli.cl_max_mds_easize);
457 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
458 obd->u.cli.cl_max_mds_cookiesize);
459 ptlrpc_request_set_replen(req);
461 rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL);
463 if (rc == -ERESTARTSYS)