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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_reint.c
34 * Lustre Metadata Target (mdt) reintegration routines
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Huang Hua <huanghua@clusterfs.com>
40 * Author: Yury Umanets <umka@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <lprocfs_status.h>
46 #include "mdt_internal.h"
47 #include <lustre_lmv.h>
49 static inline void mdt_reint_init_ma(struct mdt_thread_info *info,
52 ma->ma_need = MA_INODE;
57 * Get version of object by fid.
59 * Return real version or ENOENT_VERSION if object doesn't exist
61 static void mdt_obj_version_get(struct mdt_thread_info *info,
62 struct mdt_object *o, __u64 *version)
66 if (mdt_object_exists(o) && !mdt_object_remote(o) &&
67 !fid_is_obf(mdt_object_fid(o)))
68 *version = dt_version_get(info->mti_env, mdt_obj2dt(o));
70 *version = ENOENT_VERSION;
71 CDEBUG(D_INODE, "FID "DFID" version is %#llx\n",
72 PFID(mdt_object_fid(o)), *version);
76 * Check version is correct.
78 * Should be called only during replay.
80 static int mdt_version_check(struct ptlrpc_request *req,
81 __u64 version, int idx)
83 __u64 *pre_ver = lustre_msg_get_versions(req->rq_reqmsg);
86 if (!exp_connect_vbr(req->rq_export))
89 LASSERT(req_is_replay(req));
90 /** VBR: version is checked always because costs nothing */
91 LASSERT(idx < PTLRPC_NUM_VERSIONS);
92 /** Sanity check for malformed buffers */
93 if (pre_ver == NULL) {
94 CERROR("No versions in request buffer\n");
95 spin_lock(&req->rq_export->exp_lock);
96 req->rq_export->exp_vbr_failed = 1;
97 spin_unlock(&req->rq_export->exp_lock);
99 } else if (pre_ver[idx] != version) {
100 CDEBUG(D_INODE, "Version mismatch %#llx != %#llx\n",
101 pre_ver[idx], version);
102 spin_lock(&req->rq_export->exp_lock);
103 req->rq_export->exp_vbr_failed = 1;
104 spin_unlock(&req->rq_export->exp_lock);
111 * Save pre-versions in reply.
113 static void mdt_version_save(struct ptlrpc_request *req, __u64 version,
118 if (!exp_connect_vbr(req->rq_export))
121 LASSERT(!req_is_replay(req));
122 LASSERT(req->rq_repmsg != NULL);
123 reply_ver = lustre_msg_get_versions(req->rq_repmsg);
125 reply_ver[idx] = version;
129 * Save enoent version, it is needed when it is obvious that object doesn't
130 * exist, e.g. child during create.
132 static void mdt_enoent_version_save(struct mdt_thread_info *info, int idx)
134 /* save version of file name for replay, it must be ENOENT here */
135 if (!req_is_replay(mdt_info_req(info))) {
136 info->mti_ver[idx] = ENOENT_VERSION;
137 mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
142 * Get version from disk and save in reply buffer.
144 * Versions are saved in reply only during normal operations not replays.
146 void mdt_version_get_save(struct mdt_thread_info *info,
147 struct mdt_object *mto, int idx)
149 /* don't save versions during replay */
150 if (!req_is_replay(mdt_info_req(info))) {
151 mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
152 mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
157 * Get version from disk and check it, no save in reply.
159 int mdt_version_get_check(struct mdt_thread_info *info,
160 struct mdt_object *mto, int idx)
162 /* only check versions during replay */
163 if (!req_is_replay(mdt_info_req(info)))
166 mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
167 return mdt_version_check(mdt_info_req(info), info->mti_ver[idx], idx);
171 * Get version from disk and check if recovery or just save.
173 int mdt_version_get_check_save(struct mdt_thread_info *info,
174 struct mdt_object *mto, int idx)
178 mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
179 if (req_is_replay(mdt_info_req(info)))
180 rc = mdt_version_check(mdt_info_req(info), info->mti_ver[idx],
183 mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
188 * Lookup with version checking.
190 * This checks version of 'name'. Many reint functions uses 'name' for child not
191 * FID, therefore we need to get object by name and check its version.
193 static int mdt_lookup_version_check(struct mdt_thread_info *info,
194 struct mdt_object *p,
195 const struct lu_name *lname,
196 struct lu_fid *fid, int idx)
200 rc = mdo_lookup(info->mti_env, mdt_object_child(p), lname, fid,
202 /* Check version only during replay */
203 if (!req_is_replay(mdt_info_req(info)))
206 info->mti_ver[idx] = ENOENT_VERSION;
208 struct mdt_object *child;
209 child = mdt_object_find(info->mti_env, info->mti_mdt, fid);
210 if (likely(!IS_ERR(child))) {
211 mdt_obj_version_get(info, child, &info->mti_ver[idx]);
212 mdt_object_put(info->mti_env, child);
215 vbrc = mdt_version_check(mdt_info_req(info), info->mti_ver[idx], idx);
216 return vbrc ? vbrc : rc;
220 static inline int mdt_remote_permission_check(struct mdt_thread_info *info)
222 struct lu_ucred *uc = mdt_ucred(info);
223 struct mdt_device *mdt = info->mti_mdt;
225 if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) {
226 if (uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
227 mdt->mdt_enable_remote_dir_gid != -1)
235 * mdt_remote_permission: Check whether the remote operation is permitted,
237 * Only sysadmin can create remote directory / striped directory,
238 * migrate directory and set default stripedEA on directory, unless
240 * lctl set_param mdt.*.enable_remote_dir_gid=allow_gid.
242 * param[in] info: mdt_thread_info.
244 * retval = 0 remote operation is allowed.
245 * < 0 remote operation is denied.
247 static int mdt_remote_permission(struct mdt_thread_info *info)
249 struct md_op_spec *spec = &info->mti_spec;
250 struct lu_attr *attr = &info->mti_attr.ma_attr;
251 struct obd_export *exp = mdt_info_req(info)->rq_export;
254 if (info->mti_rr.rr_opcode == REINT_MIGRATE) {
255 rc = mdt_remote_permission_check(info);
260 if (info->mti_rr.rr_opcode == REINT_CREATE &&
261 (S_ISDIR(attr->la_mode) && spec->u.sp_ea.eadata != NULL &&
262 spec->u.sp_ea.eadatalen != 0)) {
263 const struct lmv_user_md *lum = spec->u.sp_ea.eadata;
265 /* Only new clients can create remote dir( >= 2.4) and
266 * striped dir(>= 2.6), old client will return -ENOTSUPP */
267 if (!mdt_is_dne_client(exp))
270 if (le32_to_cpu(lum->lum_stripe_count) > 1 &&
271 !mdt_is_striped_client(exp))
274 rc = mdt_remote_permission_check(info);
279 if (info->mti_rr.rr_opcode == REINT_SETATTR) {
280 struct md_attr *ma = &info->mti_attr;
282 if ((ma->ma_valid & MA_LMV)) {
283 rc = mdt_remote_permission_check(info);
292 static int mdt_unlock_slaves(struct mdt_thread_info *mti,
293 struct mdt_object *obj,
294 struct ldlm_enqueue_info *einfo,
297 union ldlm_policy_data *policy = &mti->mti_policy;
298 struct mdt_lock_handle *lh = &mti->mti_lh[MDT_LH_LOCAL];
299 struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
302 LASSERT(S_ISDIR(obj->mot_header.loh_attr));
303 LASSERT(slave_locks);
305 memset(policy, 0, sizeof(*policy));
306 policy->l_inodebits.bits = einfo->ei_inodebits;
307 mdt_lock_handle_init(lh);
308 mdt_lock_reg_init(lh, einfo->ei_mode);
309 for (i = 0; i < slave_locks->ha_count; i++) {
310 if (test_bit(i, (void *)slave_locks->ha_map))
311 lh->mlh_rreg_lh = slave_locks->ha_handles[i];
313 lh->mlh_reg_lh = slave_locks->ha_handles[i];
314 mdt_object_unlock(mti, NULL, lh, decref);
315 slave_locks->ha_handles[i].cookie = 0ull;
318 return mo_object_unlock(mti->mti_env, mdt_object_child(obj), einfo,
322 static inline int mdt_object_striped(struct mdt_thread_info *mti,
323 struct mdt_object *obj)
327 if (!S_ISDIR(obj->mot_header.loh_attr))
330 rc = mo_xattr_get(mti->mti_env, mdt_object_child(obj), &LU_BUF_NULL,
333 return rc == -ENODATA ? 0 : rc;
339 * Lock slave stripes if necessary, the lock handles of slave stripes
340 * will be stored in einfo->ei_cbdata.
342 static int mdt_lock_slaves(struct mdt_thread_info *mti, struct mdt_object *obj,
343 enum ldlm_mode mode, __u64 ibits,
344 struct ldlm_enqueue_info *einfo)
346 union ldlm_policy_data *policy = &mti->mti_policy;
348 LASSERT(S_ISDIR(obj->mot_header.loh_attr));
350 einfo->ei_type = LDLM_IBITS;
351 einfo->ei_mode = mode;
352 einfo->ei_cb_bl = mdt_remote_blocking_ast;
353 einfo->ei_cb_local_bl = mdt_blocking_ast;
354 einfo->ei_cb_cp = ldlm_completion_ast;
355 einfo->ei_enq_slave = 1;
356 einfo->ei_namespace = mti->mti_mdt->mdt_namespace;
357 einfo->ei_inodebits = ibits;
358 memset(policy, 0, sizeof(*policy));
359 policy->l_inodebits.bits = ibits;
361 return mo_object_lock(mti->mti_env, mdt_object_child(obj), NULL, einfo,
365 static inline int mdt_reint_striped_lock(struct mdt_thread_info *info,
366 struct mdt_object *o,
367 struct mdt_lock_handle *lh,
369 struct ldlm_enqueue_info *einfo,
374 LASSERT(!mdt_object_remote(o));
376 memset(einfo, 0, sizeof(*einfo));
378 rc = mdt_reint_object_lock(info, o, lh, ibits, cos_incompat);
382 rc = mdt_object_striped(info, o);
385 mdt_object_unlock(info, o, lh, rc);
389 rc = mdt_lock_slaves(info, o, lh->mlh_reg_mode, ibits, einfo);
391 mdt_object_unlock(info, o, lh, rc);
392 if (rc == -EIO && OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_NAME))
400 mdt_reint_striped_unlock(struct mdt_thread_info *info, struct mdt_object *o,
401 struct mdt_lock_handle *lh,
402 struct ldlm_enqueue_info *einfo, int decref)
404 if (einfo->ei_cbdata)
405 mdt_unlock_slaves(info, o, einfo, decref);
406 mdt_object_unlock(info, o, lh, decref);
410 * VBR: we save three versions in reply:
411 * 0 - parent. Check that parent version is the same during replay.
412 * 1 - name. Version of 'name' if file exists with the same name or
413 * ENOENT_VERSION, it is needed because file may appear due to missed replays.
414 * 2 - child. Version of child by FID. Must be ENOENT. It is mostly sanity
417 static int mdt_create(struct mdt_thread_info *info)
419 struct mdt_device *mdt = info->mti_mdt;
420 struct mdt_object *parent;
421 struct mdt_object *child;
422 struct mdt_lock_handle *lh;
423 struct mdt_body *repbody;
424 struct md_attr *ma = &info->mti_attr;
425 struct mdt_reint_record *rr = &info->mti_rr;
429 DEBUG_REQ(D_INODE, mdt_info_req(info), "Create ("DNAME"->"DFID") "
431 PNAME(&rr->rr_name), PFID(rr->rr_fid2), PFID(rr->rr_fid1));
433 if (!fid_is_md_operative(rr->rr_fid1))
436 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
438 parent = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
440 RETURN(PTR_ERR(parent));
442 if (!mdt_object_exists(parent))
443 GOTO(put_parent, rc = -ENOENT);
445 lh = &info->mti_lh[MDT_LH_PARENT];
446 mdt_lock_pdo_init(lh, LCK_PW, &rr->rr_name);
447 rc = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE);
449 GOTO(put_parent, rc);
451 if (!mdt_object_remote(parent)) {
452 rc = mdt_version_get_check_save(info, parent, 0);
454 GOTO(unlock_parent, rc);
458 * Check child name version during replay.
459 * During create replay a file may exist with same name.
461 rc = mdt_lookup_version_check(info, parent, &rr->rr_name,
462 &info->mti_tmp_fid1, 1);
464 GOTO(unlock_parent, rc = -EEXIST);
466 /* -ENOENT is expected here */
468 GOTO(unlock_parent, rc);
470 /* save version of file name for replay, it must be ENOENT here */
471 mdt_enoent_version_save(info, 1);
473 child = mdt_object_new(info->mti_env, mdt, rr->rr_fid2);
474 if (unlikely(IS_ERR(child)))
475 GOTO(unlock_parent, rc = PTR_ERR(child));
477 rc = mdt_remote_permission(info);
481 ma->ma_need = MA_INODE;
484 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
485 OBD_FAIL_MDS_REINT_CREATE_WRITE);
487 /* Version of child will be updated on disk. */
488 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
489 rc = mdt_version_get_check_save(info, child, 2);
493 /* Let lower layer know current lock mode. */
494 info->mti_spec.sp_cr_mode = mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
497 * Do not perform lookup sanity check. We know that name does
500 info->mti_spec.sp_cr_lookup = 0;
501 info->mti_spec.sp_feat = &dt_directory_features;
503 rc = mdo_create(info->mti_env, mdt_object_child(parent), &rr->rr_name,
504 mdt_object_child(child), &info->mti_spec, ma);
506 rc = mdt_attr_get_complex(info, child, ma);
512 * On DNE, we need to eliminate dependey between 'mkdir a' and
513 * 'mkdir a/b' if b is a striped directory, to achieve this, two
514 * things are done below:
515 * 1. save child and slaves lock.
516 * 2. if the child is a striped directory, relock parent so to
517 * compare against with COS locks to ensure parent was
520 if (mdt_slc_is_enabled(mdt) && S_ISDIR(ma->ma_attr.la_mode)) {
521 struct mdt_lock_handle *lhc;
522 struct ldlm_enqueue_info *einfo = &info->mti_einfo;
525 rc = mdt_object_striped(info, child);
531 if (!mdt_object_remote(parent)) {
532 mdt_object_unlock(info, parent, lh, 1);
533 mdt_lock_pdo_init(lh, LCK_PW, &rr->rr_name);
534 rc = mdt_reint_object_lock(info, parent, lh,
535 MDS_INODELOCK_UPDATE,
542 lhc = &info->mti_lh[MDT_LH_CHILD];
543 mdt_lock_handle_init(lhc);
544 mdt_lock_reg_init(lhc, LCK_PW);
545 rc = mdt_reint_striped_lock(info, child, lhc,
546 MDS_INODELOCK_UPDATE, einfo,
551 mdt_reint_striped_unlock(info, child, lhc, einfo, rc);
554 /* Return fid & attr to client. */
555 if (ma->ma_valid & MA_INODE)
556 mdt_pack_attr2body(info, repbody, &ma->ma_attr,
557 mdt_object_fid(child));
559 mdt_object_put(info->mti_env, child);
561 mdt_object_unlock(info, parent, lh, rc);
563 mdt_object_put(info->mti_env, parent);
567 static int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
570 struct mdt_lock_handle *lh;
571 int do_vbr = ma->ma_attr.la_valid &
572 (LA_MODE | LA_UID | LA_GID | LA_PROJID | LA_FLAGS);
573 __u64 lockpart = MDS_INODELOCK_UPDATE;
574 struct ldlm_enqueue_info *einfo = &info->mti_einfo;
579 rc = mdt_object_striped(info, mo);
585 lh = &info->mti_lh[MDT_LH_PARENT];
586 mdt_lock_reg_init(lh, LCK_PW);
588 /* Even though the new MDT will grant PERM lock to the old
589 * client, but the old client will almost ignore that during
590 * So it needs to revoke both LOOKUP and PERM lock here, so
591 * both new and old client can cancel the dcache */
592 if (ma->ma_attr.la_valid & (LA_MODE|LA_UID|LA_GID))
593 lockpart |= MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
595 rc = mdt_reint_striped_lock(info, mo, lh, lockpart, einfo,
600 /* all attrs are packed into mti_attr in unpack_setattr */
601 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
602 OBD_FAIL_MDS_REINT_SETATTR_WRITE);
604 /* VBR: update version if attr changed are important for recovery */
606 /* update on-disk version of changed object */
607 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(mo));
608 rc = mdt_version_get_check_save(info, mo, 0);
610 GOTO(out_unlock, rc);
613 /* Ensure constant striping during chown(). See LU-2789. */
614 if (ma->ma_attr.la_valid & (LA_UID|LA_GID|LA_PROJID))
615 mutex_lock(&mo->mot_lov_mutex);
617 /* all attrs are packed into mti_attr in unpack_setattr */
618 rc = mo_attr_set(info->mti_env, mdt_object_child(mo), ma);
620 if (ma->ma_attr.la_valid & (LA_UID|LA_GID|LA_PROJID))
621 mutex_unlock(&mo->mot_lov_mutex);
624 GOTO(out_unlock, rc);
625 mdt_dom_obj_lvb_update(info->mti_env, mo, false);
628 mdt_reint_striped_unlock(info, mo, lh, einfo, rc);
633 * Check HSM flags and add HS_DIRTY flag if relevant.
635 * A file could be set dirty only if it has a copy in the backend (HS_EXISTS)
636 * and is not RELEASED.
638 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
644 /* If the file was modified, add the dirty flag */
645 ma->ma_need = MA_HSM;
646 rc = mdt_attr_get_complex(info, mo, ma);
648 CERROR("file attribute read error for "DFID": %d.\n",
649 PFID(mdt_object_fid(mo)), rc);
653 /* If an up2date copy exists in the backend, add dirty flag */
654 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_EXISTS)
655 && !(ma->ma_hsm.mh_flags & (HS_DIRTY|HS_RELEASED))) {
656 ma->ma_hsm.mh_flags |= HS_DIRTY;
658 rc = mdt_hsm_attr_set(info, mo, &ma->ma_hsm);
660 CERROR("file attribute change error for "DFID": %d\n",
661 PFID(mdt_object_fid(mo)), rc);
667 static int mdt_reint_setattr(struct mdt_thread_info *info,
668 struct mdt_lock_handle *lhc)
670 struct md_attr *ma = &info->mti_attr;
671 struct mdt_reint_record *rr = &info->mti_rr;
672 struct ptlrpc_request *req = mdt_info_req(info);
673 struct mdt_object *mo;
674 struct mdt_body *repbody;
678 DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
679 (unsigned int)ma->ma_attr.la_valid);
681 if (info->mti_dlm_req)
682 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
684 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
685 mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
687 GOTO(out, rc = PTR_ERR(mo));
689 if (!mdt_object_exists(mo))
690 GOTO(out_put, rc = -ENOENT);
692 if (mdt_object_remote(mo))
693 GOTO(out_put, rc = -EREMOTE);
695 if (ma->ma_attr.la_valid & LA_SIZE || rr->rr_flags & MRF_OPEN_TRUNC) {
696 /* Check write access for the O_TRUNC case */
697 if (mdt_write_read(mo) < 0)
698 GOTO(out_put, rc = -ETXTBSY);
700 /* LU-10286: compatibility check for FLR.
701 * Please check the comment in mdt_finish_open() for details */
702 if (!exp_connect_flr(info->mti_exp)) {
703 rc = mdt_big_xattr_get(info, mo, XATTR_NAME_LOV);
704 if (rc < 0 && rc != -ENODATA)
707 if (rc > 0 && mdt_lmm_is_flr(info->mti_big_lmm))
708 GOTO(out_put, rc = -EOPNOTSUPP);
711 /* For truncate, the file size sent from client
712 * is believable, but the blocks are incorrect,
713 * which makes the block size in LSOM attribute
714 * inconsisent with the real block size.
716 rc = mdt_lsom_update(info, mo, true);
721 if ((ma->ma_valid & MA_INODE) && ma->ma_attr.la_valid) {
722 if (ma->ma_valid & MA_LOV)
723 GOTO(out_put, rc = -EPROTO);
725 rc = mdt_attr_set(info, mo, ma);
728 } else if ((ma->ma_valid & (MA_LOV | MA_LMV)) &&
729 (ma->ma_valid & MA_INODE)) {
730 struct lu_buf *buf = &info->mti_buf;
731 struct mdt_lock_handle *lh;
733 rc = mdt_remote_permission(info);
737 if (ma->ma_attr.la_valid != 0)
738 GOTO(out_put, rc = -EPROTO);
740 lh = &info->mti_lh[MDT_LH_PARENT];
741 mdt_lock_reg_init(lh, LCK_PW);
743 rc = mdt_object_lock(info, mo, lh, MDS_INODELOCK_XATTR);
747 if (ma->ma_valid & MA_LOV) {
748 buf->lb_buf = ma->ma_lmm;
749 buf->lb_len = ma->ma_lmm_size;
751 buf->lb_buf = ma->ma_lmv;
752 buf->lb_len = ma->ma_lmv_size;
754 rc = mo_xattr_set(info->mti_env, mdt_object_child(mo), buf,
755 (ma->ma_valid & MA_LOV) ?
756 XATTR_NAME_LOV : XATTR_NAME_DEFAULT_LMV,
759 mdt_object_unlock(info, mo, lh, rc);
763 GOTO(out_put, rc = -EPROTO);
766 /* If file data is modified, add the dirty flag */
767 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
768 rc = mdt_add_dirty_flag(info, mo, ma);
770 ma->ma_need = MA_INODE;
772 rc = mdt_attr_get_complex(info, mo, ma);
776 mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
780 mdt_object_put(info->mti_env, mo);
783 mdt_counter_incr(req, LPROC_MDT_SETATTR);
785 mdt_client_compatibility(info);
786 rc2 = mdt_fix_reply(info);
792 static int mdt_reint_create(struct mdt_thread_info *info,
793 struct mdt_lock_handle *lhc)
795 struct ptlrpc_request *req = mdt_info_req(info);
799 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
800 RETURN(err_serious(-ESTALE));
802 if (info->mti_dlm_req)
803 ldlm_request_cancel(mdt_info_req(info),
804 info->mti_dlm_req, 0, LATF_SKIP);
806 if (!lu_name_is_valid(&info->mti_rr.rr_name))
809 switch (info->mti_attr.ma_attr.la_mode & S_IFMT) {
811 mdt_counter_incr(req, LPROC_MDT_MKDIR);
819 /* Special file should stay on the same node as parent. */
820 mdt_counter_incr(req, LPROC_MDT_MKNOD);
823 CERROR("%s: Unsupported mode %o\n",
824 mdt_obd_name(info->mti_mdt),
825 info->mti_attr.ma_attr.la_mode);
826 RETURN(err_serious(-EOPNOTSUPP));
829 rc = mdt_create(info);
834 * VBR: save parent version in reply and child version getting by its name.
835 * Version of child is getting and checking during its lookup. If
837 static int mdt_reint_unlink(struct mdt_thread_info *info,
838 struct mdt_lock_handle *lhc)
840 struct mdt_reint_record *rr = &info->mti_rr;
841 struct ptlrpc_request *req = mdt_info_req(info);
842 struct md_attr *ma = &info->mti_attr;
843 struct lu_fid *child_fid = &info->mti_tmp_fid1;
844 struct mdt_object *mp;
845 struct mdt_object *mc;
846 struct mdt_lock_handle *parent_lh;
847 struct mdt_lock_handle *child_lh;
848 struct ldlm_enqueue_info *einfo = &info->mti_einfo;
850 bool cos_incompat = false;
856 DEBUG_REQ(D_INODE, req, "unlink "DFID"/"DNAME"", PFID(rr->rr_fid1),
857 PNAME(&rr->rr_name));
859 if (info->mti_dlm_req)
860 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
862 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK))
863 RETURN(err_serious(-ENOENT));
865 if (!fid_is_md_operative(rr->rr_fid1))
868 mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
872 if (mdt_object_remote(mp)) {
875 rc = mdt_version_get_check_save(info, mp, 0);
877 GOTO(put_parent, rc);
881 parent_lh = &info->mti_lh[MDT_LH_PARENT];
882 mdt_lock_pdo_init(parent_lh, LCK_PW, &rr->rr_name);
883 rc = mdt_reint_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE,
886 GOTO(put_parent, rc);
888 /* lookup child object along with version checking */
890 rc = mdt_lookup_version_check(info, mp, &rr->rr_name, child_fid, 1);
892 /* Name might not be able to find during resend of
893 * remote unlink, considering following case.
894 * dir_A is a remote directory, the name entry of
895 * dir_A is on MDT0, the directory is on MDT1,
897 * 1. client sends unlink req to MDT1.
898 * 2. MDT1 sends name delete update to MDT0.
899 * 3. name entry is being deleted in MDT0 synchronously.
900 * 4. MDT1 is restarted.
901 * 5. client resends unlink req to MDT1. So it can not
902 * find the name entry on MDT0 anymore.
903 * In this case, MDT1 only needs to destory the local
906 if (mdt_object_remote(mp) && rc == -ENOENT &&
907 !fid_is_zero(rr->rr_fid2) &&
908 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
910 *child_fid = *rr->rr_fid2;
912 GOTO(unlock_parent, rc);
916 if (!fid_is_md_operative(child_fid))
917 GOTO(unlock_parent, rc = -EPERM);
919 /* We will lock the child regardless it is local or remote. No harm. */
920 mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
922 GOTO(unlock_parent, rc = PTR_ERR(mc));
925 rc = mdt_object_striped(info, mc);
927 GOTO(unlock_parent, rc = PTR_ERR(mc));
931 mdt_object_put(info->mti_env, mc);
932 mdt_object_unlock(info, mp, parent_lh, -EAGAIN);
937 child_lh = &info->mti_lh[MDT_LH_CHILD];
938 mdt_lock_reg_init(child_lh, LCK_EX);
939 if (info->mti_spec.sp_rm_entry) {
940 struct lu_ucred *uc = mdt_ucred(info);
942 if (!mdt_is_dne_client(req->rq_export))
943 /* Return -ENOTSUPP for old client */
944 GOTO(put_child, rc = -ENOTSUPP);
946 if (!md_capable(uc, CFS_CAP_SYS_ADMIN))
947 GOTO(put_child, rc = -EPERM);
949 ma->ma_need = MA_INODE;
951 rc = mdo_unlink(info->mti_env, mdt_object_child(mp),
952 NULL, &rr->rr_name, ma, no_name);
956 if (mdt_object_remote(mc)) {
957 struct mdt_body *repbody;
959 if (!fid_is_zero(rr->rr_fid2)) {
960 CDEBUG(D_INFO, "%s: name "DNAME" cannot find "DFID"\n",
961 mdt_obd_name(info->mti_mdt),
962 PNAME(&rr->rr_name), PFID(mdt_object_fid(mc)));
963 GOTO(put_child, rc = -ENOENT);
965 CDEBUG(D_INFO, "%s: name "DNAME": "DFID" is on another MDT\n",
966 mdt_obd_name(info->mti_mdt),
967 PNAME(&rr->rr_name), PFID(mdt_object_fid(mc)));
969 if (!mdt_is_dne_client(req->rq_export))
970 /* Return -ENOTSUPP for old client */
971 GOTO(put_child, rc = -ENOTSUPP);
973 /* Revoke the LOOKUP lock of the remote object granted by
974 * this MDT. Since the unlink will happen on another MDT,
975 * it will release the LOOKUP lock right away. Then What
976 * would happen if another client try to grab the LOOKUP
977 * lock at the same time with unlink XXX */
978 mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP);
979 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
980 LASSERT(repbody != NULL);
981 repbody->mbo_fid1 = *mdt_object_fid(mc);
982 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
983 GOTO(unlock_child, rc = -EREMOTE);
985 /* We used to acquire MDS_INODELOCK_FULL here but we can't do
986 * this now because a running HSM restore on the child (unlink
987 * victim) will hold the layout lock. See LU-4002. */
988 lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
989 if (mdt_object_remote(mp)) {
990 /* Enqueue lookup lock from parent MDT */
991 rc = mdt_remote_object_lock(info, mp, mdt_object_fid(mc),
992 &child_lh->mlh_rreg_lh,
993 child_lh->mlh_rreg_mode,
994 MDS_INODELOCK_LOOKUP, false);
998 lock_ibits &= ~MDS_INODELOCK_LOOKUP;
1001 rc = mdt_reint_striped_lock(info, mc, child_lh, lock_ibits, einfo,
1004 GOTO(put_child, rc);
1007 * Now we can only make sure we need MA_INODE, in mdd layer, will check
1008 * whether need MA_LOV and MA_COOKIE.
1010 ma->ma_need = MA_INODE;
1013 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
1014 OBD_FAIL_MDS_REINT_UNLINK_WRITE);
1015 /* save version when object is locked */
1016 mdt_version_get_save(info, mc, 1);
1018 mutex_lock(&mc->mot_lov_mutex);
1020 rc = mdo_unlink(info->mti_env, mdt_object_child(mp),
1021 mdt_object_child(mc), &rr->rr_name, ma, no_name);
1023 mutex_unlock(&mc->mot_lov_mutex);
1025 GOTO(unlock_child, rc);
1027 if (!lu_object_is_dying(&mc->mot_header)) {
1028 rc = mdt_attr_get_complex(info, mc, ma);
1032 mdt_dom_check_and_discard(info, mc);
1034 mdt_handle_last_unlink(info, mc, ma);
1037 if (ma->ma_valid & MA_INODE) {
1038 switch (ma->ma_attr.la_mode & S_IFMT) {
1040 mdt_counter_incr(req, LPROC_MDT_RMDIR);
1048 mdt_counter_incr(req, LPROC_MDT_UNLINK);
1051 LASSERTF(0, "bad file type %o unlinking\n",
1052 ma->ma_attr.la_mode);
1059 mdt_reint_striped_unlock(info, mc, child_lh, einfo, rc);
1061 mdt_object_put(info->mti_env, mc);
1063 mdt_object_unlock(info, mp, parent_lh, rc);
1065 mdt_object_put(info->mti_env, mp);
1070 * VBR: save versions in reply: 0 - parent; 1 - child by fid; 2 - target by
1073 static int mdt_reint_link(struct mdt_thread_info *info,
1074 struct mdt_lock_handle *lhc)
1076 struct mdt_reint_record *rr = &info->mti_rr;
1077 struct ptlrpc_request *req = mdt_info_req(info);
1078 struct md_attr *ma = &info->mti_attr;
1079 struct mdt_object *ms;
1080 struct mdt_object *mp;
1081 struct mdt_lock_handle *lhs;
1082 struct mdt_lock_handle *lhp;
1087 DEBUG_REQ(D_INODE, req, "link "DFID" to "DFID"/"DNAME,
1088 PFID(rr->rr_fid1), PFID(rr->rr_fid2), PNAME(&rr->rr_name));
1090 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK))
1091 RETURN(err_serious(-ENOENT));
1093 if (info->mti_dlm_req)
1094 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1096 /* Invalid case so return error immediately instead of
1098 if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2))
1101 if (!fid_is_md_operative(rr->rr_fid1) ||
1102 !fid_is_md_operative(rr->rr_fid2))
1105 /* step 1: find target parent dir */
1106 mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1108 RETURN(PTR_ERR(mp));
1110 rc = mdt_version_get_check_save(info, mp, 0);
1112 GOTO(put_parent, rc);
1114 /* step 2: find source */
1115 ms = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
1117 GOTO(put_parent, rc = PTR_ERR(ms));
1119 if (!mdt_object_exists(ms)) {
1120 CDEBUG(D_INFO, "%s: "DFID" does not exist.\n",
1121 mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1));
1122 GOTO(put_source, rc = -ENOENT);
1125 cos_incompat = (mdt_object_remote(mp) || mdt_object_remote(ms));
1127 lhp = &info->mti_lh[MDT_LH_PARENT];
1128 mdt_lock_pdo_init(lhp, LCK_PW, &rr->rr_name);
1129 rc = mdt_reint_object_lock(info, mp, lhp, MDS_INODELOCK_UPDATE,
1132 GOTO(put_source, rc);
1134 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME3, 5);
1136 lhs = &info->mti_lh[MDT_LH_CHILD];
1137 mdt_lock_reg_init(lhs, LCK_EX);
1138 rc = mdt_reint_object_lock(info, ms, lhs,
1139 MDS_INODELOCK_UPDATE | MDS_INODELOCK_XATTR,
1142 GOTO(unlock_parent, rc);
1144 /* step 3: link it */
1145 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
1146 OBD_FAIL_MDS_REINT_LINK_WRITE);
1148 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(ms));
1149 rc = mdt_version_get_check_save(info, ms, 1);
1151 GOTO(unlock_source, rc);
1153 /** check target version by name during replay */
1154 rc = mdt_lookup_version_check(info, mp, &rr->rr_name,
1155 &info->mti_tmp_fid1, 2);
1156 if (rc != 0 && rc != -ENOENT)
1157 GOTO(unlock_source, rc);
1158 /* save version of file name for replay, it must be ENOENT here */
1159 if (!req_is_replay(mdt_info_req(info))) {
1160 if (rc != -ENOENT) {
1161 CDEBUG(D_INFO, "link target "DNAME" existed!\n",
1162 PNAME(&rr->rr_name));
1163 GOTO(unlock_source, rc = -EEXIST);
1165 info->mti_ver[2] = ENOENT_VERSION;
1166 mdt_version_save(mdt_info_req(info), info->mti_ver[2], 2);
1169 rc = mdo_link(info->mti_env, mdt_object_child(mp),
1170 mdt_object_child(ms), &rr->rr_name, ma);
1173 mdt_counter_incr(req, LPROC_MDT_LINK);
1177 mdt_object_unlock(info, ms, lhs, rc);
1179 mdt_object_unlock(info, mp, lhp, rc);
1181 mdt_object_put(info->mti_env, ms);
1183 mdt_object_put(info->mti_env, mp);
1187 * lock the part of the directory according to the hash of the name
1188 * (lh->mlh_pdo_hash) in parallel directory lock.
1190 static int mdt_pdir_hash_lock(struct mdt_thread_info *info,
1191 struct mdt_lock_handle *lh,
1192 struct mdt_object *obj, __u64 ibits,
1195 struct ldlm_res_id *res = &info->mti_res_id;
1196 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
1197 union ldlm_policy_data *policy = &info->mti_policy;
1198 __u64 dlmflags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1202 * Finish res_id initializing by name hash marking part of
1203 * directory which is taking modification.
1205 LASSERT(lh->mlh_pdo_hash != 0);
1206 fid_build_pdo_res_name(mdt_object_fid(obj), lh->mlh_pdo_hash, res);
1207 memset(policy, 0, sizeof(*policy));
1208 policy->l_inodebits.bits = ibits;
1210 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
1211 dlmflags |= LDLM_FL_COS_INCOMPAT;
1213 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
1214 * going to be sent to client. If it is - mdt_intent_policy() path will
1215 * fix it up and turn FL_LOCAL flag off.
1217 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
1218 res, dlmflags, &info->mti_exp->exp_handle.h_cookie);
1223 * Get BFL lock for rename or migrate process.
1225 static int mdt_rename_lock(struct mdt_thread_info *info,
1226 struct lustre_handle *lh)
1231 if (mdt_seq_site(info->mti_mdt)->ss_node_id != 0) {
1232 struct lu_fid *fid = &info->mti_tmp_fid1;
1233 struct mdt_object *obj;
1235 /* XXX, right now, it has to use object API to
1236 * enqueue lock cross MDT, so it will enqueue
1237 * rename lock(with LUSTRE_BFL_FID) by root object */
1239 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1241 RETURN(PTR_ERR(obj));
1243 rc = mdt_remote_object_lock(info, obj,
1244 &LUSTRE_BFL_FID, lh,
1246 MDS_INODELOCK_UPDATE, false);
1247 mdt_object_put(info->mti_env, obj);
1249 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
1250 union ldlm_policy_data *policy = &info->mti_policy;
1251 struct ldlm_res_id *res_id = &info->mti_res_id;
1254 fid_build_reg_res_name(&LUSTRE_BFL_FID, res_id);
1255 memset(policy, 0, sizeof *policy);
1256 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
1257 flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1258 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
1259 LCK_EX, &flags, ldlm_blocking_ast,
1260 ldlm_completion_ast, NULL, NULL, 0,
1262 &info->mti_exp->exp_handle.h_cookie,
1269 static void mdt_rename_unlock(struct lustre_handle *lh)
1272 LASSERT(lustre_handle_is_used(lh));
1273 /* Cancel the single rename lock right away */
1274 ldlm_lock_decref_and_cancel(lh, LCK_EX);
1279 * This is is_subdir() variant, it is CMD if cmm forwards it to correct
1280 * target. Source should not be ancestor of target dir. May be other rename
1281 * checks can be moved here later.
1283 static int mdt_is_subdir(struct mdt_thread_info *info,
1284 struct mdt_object *dir,
1285 const struct lu_fid *fid)
1287 struct lu_fid dir_fid = dir->mot_header.loh_fid;
1291 /* If the source and target are in the same directory, they can not
1292 * be parent/child relationship, so subdir check is not needed */
1293 if (lu_fid_eq(&dir_fid, fid))
1296 if (!mdt_object_exists(dir))
1299 rc = mdo_is_subdir(info->mti_env, mdt_object_child(dir),
1302 CERROR("%s: failed subdir check in "DFID" for "DFID
1303 ": rc = %d\n", mdt_obd_name(info->mti_mdt),
1304 PFID(&dir_fid), PFID(fid), rc);
1305 /* Return EINVAL only if a parent is the @fid */
1309 /* check the found fid */
1310 if (lu_fid_eq(&dir_fid, fid))
1317 /* Update object linkEA */
1318 struct mdt_lock_list {
1319 struct mdt_object *mll_obj;
1320 struct mdt_lock_handle mll_lh;
1321 struct list_head mll_list;
1324 static void mdt_unlock_list(struct mdt_thread_info *info,
1325 struct list_head *list, int rc)
1327 struct mdt_lock_list *mll;
1328 struct mdt_lock_list *mll2;
1330 list_for_each_entry_safe(mll, mll2, list, mll_list) {
1331 mdt_object_unlock_put(info, mll->mll_obj, &mll->mll_lh, rc);
1332 list_del(&mll->mll_list);
1337 static int mdt_lock_objects_in_linkea(struct mdt_thread_info *info,
1338 struct mdt_object *obj,
1339 struct mdt_object *pobj,
1340 struct list_head *lock_list)
1342 struct lu_buf *buf = &info->mti_big_buf;
1343 struct linkea_data ldata = { NULL };
1349 if (S_ISDIR(lu_object_attr(&obj->mot_obj)))
1352 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
1353 if (buf->lb_buf == NULL)
1357 rc = mdt_links_read(info, obj, &ldata);
1359 if (rc == -ENOENT || rc == -ENODATA)
1364 /* ignore the migrating parent(@pobj) */
1365 retry_count = ldata.ld_leh->leh_reccount - 1;
1368 LASSERT(ldata.ld_leh != NULL);
1369 ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
1370 for (count = 0; count < ldata.ld_leh->leh_reccount; count++) {
1371 struct mdt_device *mdt = info->mti_mdt;
1372 struct mdt_object *mdt_pobj;
1373 struct mdt_lock_list *mll;
1374 struct lu_name name;
1378 linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
1380 mdt_pobj = mdt_object_find(info->mti_env, mdt, &fid);
1381 if (IS_ERR(mdt_pobj)) {
1382 CWARN("%s: cannot find obj "DFID": rc = %ld\n",
1383 mdt_obd_name(mdt), PFID(&fid), PTR_ERR(mdt_pobj));
1387 if (!mdt_object_exists(mdt_pobj)) {
1388 CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n",
1389 mdt_obd_name(mdt), PFID(&fid));
1390 mdt_object_put(info->mti_env, mdt_pobj);
1394 /* Check if the object already exists in the list */
1395 list_for_each_entry(mll, lock_list, mll_list) {
1396 if (mll->mll_obj == mdt_pobj) {
1397 mdt_object_put(info->mti_env, mdt_pobj);
1402 if (mdt_pobj == pobj) {
1403 CDEBUG(D_INFO, "%s: skipping parent obj "DFID"\n",
1404 mdt_obd_name(mdt), PFID(&fid));
1405 mdt_object_put(info->mti_env, mdt_pobj);
1411 mdt_object_put(info->mti_env, mdt_pobj);
1412 GOTO(out, rc = -ENOMEM);
1415 /* Since this needs to lock all of objects in linkea, to avoid
1416 * deadlocks, because it does not follow parent-child order as
1417 * other MDT operation, let's use try_lock here and if the lock
1418 * cannot be gotten because of conflicting locks, then drop all
1419 * current locks, send an AST to the client, and start again. */
1420 mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
1422 rc = mdt_object_lock_try(info, mdt_pobj, &mll->mll_lh, &ibits,
1423 MDS_INODELOCK_UPDATE, true);
1424 if (!(ibits & MDS_INODELOCK_UPDATE)) {
1425 mdt_unlock_list(info, lock_list, 0);
1427 CDEBUG(D_INFO, "%s: busy lock on "DFID" %s retry %d\n",
1428 mdt_obd_name(mdt), PFID(&fid), name.ln_name,
1431 if (retry_count == 0) {
1432 mdt_object_put(info->mti_env, mdt_pobj);
1434 GOTO(out, rc = -EBUSY);
1437 mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
1438 rc = mdt_object_lock(info, mdt_pobj, &mll->mll_lh,
1439 MDS_INODELOCK_UPDATE);
1441 mdt_object_put(info->mti_env, mdt_pobj);
1446 if (mdt_object_remote(mdt_pobj)) {
1447 struct ldlm_lock *lock;
1449 /* For remote object, Set lock to cb_atomic,
1450 * so lock can be released in blocking_ast()
1451 * immediately, then the next try_lock will
1452 * have better chance to succeds */
1454 ldlm_handle2lock(&mll->mll_lh.mlh_rreg_lh);
1455 LASSERT(lock != NULL);
1456 lock_res_and_lock(lock);
1457 ldlm_set_atomic_cb(lock);
1458 unlock_res_and_lock(lock);
1459 LDLM_LOCK_PUT(lock);
1461 mdt_object_unlock_put(info, mdt_pobj, &mll->mll_lh, rc);
1467 INIT_LIST_HEAD(&mll->mll_list);
1468 mll->mll_obj = mdt_pobj;
1469 list_add_tail(&mll->mll_list, lock_list);
1471 ldata.ld_lee = (struct link_ea_entry *)((char *)ldata.ld_lee +
1476 mdt_unlock_list(info, lock_list, rc);
1480 /* migrate files from one MDT to another MDT */
1481 static int mdt_reint_migrate_internal(struct mdt_thread_info *info,
1482 struct mdt_lock_handle *lhc)
1484 struct mdt_reint_record *rr = &info->mti_rr;
1485 struct md_attr *ma = &info->mti_attr;
1486 struct mdt_object *msrcdir;
1487 struct mdt_object *mold;
1488 struct mdt_object *mnew = NULL;
1489 struct mdt_lock_handle *lh_dirp;
1490 struct mdt_lock_handle *lh_childp;
1491 struct mdt_lock_handle *lh_tgtp = NULL;
1492 struct lu_fid *old_fid = &info->mti_tmp_fid1;
1493 struct list_head lock_list;
1495 struct ldlm_lock *lease = NULL;
1496 bool lock_open_sem = false;
1500 CDEBUG(D_INODE, "migrate "DFID"/"DNAME" to "DFID"\n", PFID(rr->rr_fid1),
1501 PNAME(&rr->rr_name), PFID(rr->rr_fid2));
1503 /* 1: lock the source dir. */
1504 msrcdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
1505 if (IS_ERR(msrcdir)) {
1506 CDEBUG(D_OTHER, "%s: cannot find source dir "DFID" : rc = %d\n",
1507 mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1),
1508 (int)PTR_ERR(msrcdir));
1509 RETURN(PTR_ERR(msrcdir));
1512 lh_dirp = &info->mti_lh[MDT_LH_PARENT];
1513 mdt_lock_pdo_init(lh_dirp, LCK_PW, &rr->rr_name);
1514 rc = mdt_reint_object_lock(info, msrcdir, lh_dirp, MDS_INODELOCK_UPDATE,
1517 GOTO(out_put_parent, rc);
1519 if (!mdt_object_remote(msrcdir)) {
1520 rc = mdt_version_get_check_save(info, msrcdir, 0);
1522 GOTO(out_unlock_parent, rc);
1525 /* 2: sanity check and find the object to be migrated. */
1527 rc = mdt_lookup_version_check(info, msrcdir, &rr->rr_name, old_fid, 2);
1529 GOTO(out_unlock_parent, rc);
1531 if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
1532 GOTO(out_unlock_parent, rc = -EINVAL);
1534 if (!fid_is_md_operative(old_fid))
1535 GOTO(out_unlock_parent, rc = -EPERM);
1537 if (lu_fid_eq(old_fid, &info->mti_mdt->mdt_md_root_fid))
1538 GOTO(out_unlock_parent, rc = -EPERM);
1540 mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
1542 GOTO(out_unlock_parent, rc = PTR_ERR(mold));
1544 if (mdt_object_remote(mold)) {
1545 CDEBUG(D_OTHER, "%s: source "DFID" is on the remote MDT\n",
1546 mdt_obd_name(info->mti_mdt), PFID(old_fid));
1547 GOTO(out_put_child, rc = -EREMOTE);
1550 if (S_ISREG(lu_object_attr(&mold->mot_obj)) &&
1551 !mdt_object_remote(msrcdir)) {
1552 CDEBUG(D_OTHER, "%s: parent "DFID" is still on the same"
1553 " MDT, which should be migrated first:"
1554 " rc = %d\n", mdt_obd_name(info->mti_mdt),
1555 PFID(mdt_object_fid(msrcdir)), -EPERM);
1556 GOTO(out_put_child, rc = -EPERM);
1559 rc = mdt_remote_permission(info);
1561 GOTO(out_put_child, rc);
1563 /* 3: iterate the linkea of the object and lock all of the objects */
1564 INIT_LIST_HEAD(&lock_list);
1565 rc = mdt_lock_objects_in_linkea(info, mold, msrcdir, &lock_list);
1567 GOTO(out_put_child, rc);
1569 if (info->mti_spec.sp_migrate_close) {
1570 struct close_data *data;
1571 struct mdt_body *repbody;
1572 bool lease_broken = false;
1574 if (!req_capsule_field_present(info->mti_pill, &RMF_MDT_EPOCH,
1576 !req_capsule_field_present(info->mti_pill, &RMF_CLOSE_DATA,
1578 GOTO(out_lease, rc = -EPROTO);
1580 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1582 GOTO(out_lease, rc = -EPROTO);
1584 lease = ldlm_handle2lock(&data->cd_handle);
1586 GOTO(out_lease, rc = -ESTALE);
1588 /* try to hold open_sem so that nobody else can open the file */
1589 if (!down_write_trylock(&mold->mot_open_sem)) {
1590 ldlm_lock_cancel(lease);
1591 GOTO(out_lease, rc = -EBUSY);
1594 lock_open_sem = true;
1595 /* Check if the lease open lease has already canceled */
1596 lock_res_and_lock(lease);
1597 lease_broken = ldlm_is_cancel(lease);
1598 unlock_res_and_lock(lease);
1600 LDLM_DEBUG(lease, DFID " lease broken? %d",
1601 PFID(mdt_object_fid(mold)), lease_broken);
1603 /* Cancel server side lease. Client side counterpart should
1604 * have been cancelled. It's okay to cancel it now as we've
1605 * held mot_open_sem. */
1606 ldlm_lock_cancel(lease);
1609 GOTO(out_lease, rc = -EAGAIN);
1611 rc = mdt_close_internal(info, mdt_info_req(info), NULL);
1612 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1613 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
1615 GOTO(out_unlock_list, rc);
1618 /* 4: lock of the object migrated object */
1619 lh_childp = &info->mti_lh[MDT_LH_OLD];
1620 mdt_lock_reg_init(lh_childp, LCK_EX);
1621 lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
1622 MDS_INODELOCK_LAYOUT;
1623 if (mdt_object_remote(msrcdir)) {
1624 /* Enqueue lookup lock from the parent MDT */
1625 rc = mdt_remote_object_lock(info, msrcdir, mdt_object_fid(mold),
1626 &lh_childp->mlh_rreg_lh,
1627 lh_childp->mlh_rreg_mode,
1628 MDS_INODELOCK_LOOKUP, false);
1630 GOTO(out_unlock_list, rc);
1632 lock_ibits &= ~MDS_INODELOCK_LOOKUP;
1635 rc = mdt_reint_object_lock(info, mold, lh_childp, lock_ibits, true);
1637 GOTO(out_unlock_child, rc);
1639 /* Migration is incompatible with HSM. */
1640 ma->ma_need = MA_HSM;
1642 rc = mdt_attr_get_complex(info, mold, ma);
1644 GOTO(out_unlock_child, rc);
1646 if ((ma->ma_valid & MA_HSM) && ma->ma_hsm.mh_flags != 0) {
1649 "%s: cannot migrate HSM archived file "DFID": rc = %d\n",
1650 mdt_obd_name(info->mti_mdt), PFID(old_fid), rc);
1651 GOTO(out_unlock_child, rc);
1654 ma->ma_need = MA_LMV;
1656 ma->ma_lmv = (union lmv_mds_md *)info->mti_xattr_buf;
1657 ma->ma_lmv_size = sizeof(info->mti_xattr_buf);
1658 rc = mdt_stripe_get(info, mold, ma, XATTR_NAME_LMV);
1660 GOTO(out_unlock_child, rc);
1662 if ((ma->ma_valid & MA_LMV)) {
1663 struct lmv_mds_md_v1 *lmm1;
1665 lmv_le_to_cpu(ma->ma_lmv, ma->ma_lmv);
1666 lmm1 = &ma->ma_lmv->lmv_md_v1;
1667 if (!(lmm1->lmv_hash_type & LMV_HASH_FLAG_MIGRATION)) {
1668 CDEBUG(D_OTHER, "%s: can not migrate striped dir "DFID
1669 ": rc = %d\n", mdt_obd_name(info->mti_mdt),
1670 PFID(mdt_object_fid(mold)), -EPERM);
1671 GOTO(out_unlock_child, rc = -EPERM);
1674 if (!fid_is_sane(&lmm1->lmv_stripe_fids[1]))
1675 GOTO(out_unlock_child, rc = -EINVAL);
1677 mnew = mdt_object_find(info->mti_env, info->mti_mdt,
1678 &lmm1->lmv_stripe_fids[1]);
1680 GOTO(out_unlock_child, rc = PTR_ERR(mnew));
1682 if (!mdt_object_remote(mnew)) {
1684 "%s: "DFID" being migrated is on this MDT:"
1685 " rc = %d\n", mdt_obd_name(info->mti_mdt),
1686 PFID(rr->rr_fid2), -EPERM);
1687 GOTO(out_put_new, rc = -EPERM);
1690 lh_tgtp = &info->mti_lh[MDT_LH_CHILD];
1691 mdt_lock_reg_init(lh_tgtp, LCK_EX);
1692 rc = mdt_remote_object_lock(info, mnew,
1693 mdt_object_fid(mnew),
1694 &lh_tgtp->mlh_rreg_lh,
1695 lh_tgtp->mlh_rreg_mode,
1696 MDS_INODELOCK_UPDATE, false);
1699 GOTO(out_put_new, rc);
1702 mnew = mdt_object_find(info->mti_env, info->mti_mdt,
1705 GOTO(out_unlock_child, rc = PTR_ERR(mnew));
1706 if (!mdt_object_remote(mnew)) {
1707 CDEBUG(D_OTHER, "%s: Migration "DFID" is on this MDT:"
1708 " rc = %d\n", mdt_obd_name(info->mti_mdt),
1709 PFID(rr->rr_fid2), -EXDEV);
1710 GOTO(out_put_new, rc = -EXDEV);
1715 mdt_reint_init_ma(info, ma);
1717 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
1718 OBD_FAIL_MDS_REINT_RENAME_WRITE);
1720 rc = mdo_migrate(info->mti_env, mdt_object_child(msrcdir),
1721 mdt_object_child(mold), &rr->rr_name,
1722 mdt_object_child(mnew), ma);
1724 GOTO(out_unlock_new, rc);
1727 if (lh_tgtp != NULL)
1728 mdt_object_unlock(info, mnew, lh_tgtp, rc);
1731 mdt_object_put(info->mti_env, mnew);
1733 mdt_object_unlock(info, mold, lh_childp, rc);
1735 /* we don't really modify linkea objects, so we can safely decref these
1736 * locks, and this can avoid saving them as COS locks, which may prevent
1737 * subsequent migrate. */
1738 mdt_unlock_list(info, &lock_list, 1);
1739 if (lease != NULL) {
1740 ldlm_reprocess_all(lease->l_resource);
1741 LDLM_LOCK_PUT(lease);
1745 up_write(&mold->mot_open_sem);
1747 mdt_object_put(info->mti_env, mold);
1749 mdt_object_unlock(info, msrcdir, lh_dirp, rc);
1751 mdt_object_put(info->mti_env, msrcdir);
1756 static struct mdt_object *mdt_object_find_check(struct mdt_thread_info *info,
1757 const struct lu_fid *fid,
1760 struct mdt_object *dir;
1764 dir = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1768 /* check early, the real version will be saved after locking */
1769 rc = mdt_version_get_check(info, dir, idx);
1775 mdt_object_put(info->mti_env, dir);
1779 static int mdt_object_lock_save(struct mdt_thread_info *info,
1780 struct mdt_object *dir,
1781 struct mdt_lock_handle *lh,
1782 int idx, bool cos_incompat)
1786 /* we lock the target dir if it is local */
1787 rc = mdt_reint_object_lock(info, dir, lh, MDS_INODELOCK_UPDATE,
1792 /* get and save correct version after locking */
1793 mdt_version_get_save(info, dir, idx);
1798 * VBR: rename versions in reply: 0 - srcdir parent; 1 - tgtdir parent;
1799 * 2 - srcdir child; 3 - tgtdir child.
1800 * Update on disk version of srcdir child.
1803 * For DNE phase I, only these renames are allowed
1804 * mv src_p/src_c tgt_p/tgt_c
1805 * 1. src_p/src_c/tgt_p/tgt_c are in the same MDT.
1806 * 2. src_p and tgt_p are same directory, and tgt_c does not
1807 * exists. In this case, all of modification will happen
1808 * in the MDT where ithesource parent is, only one remote
1809 * update is needed, i.e. set c_time/m_time on the child.
1810 * And tgt_c will be still in the same MDT as the original
1813 static int mdt_reint_rename_internal(struct mdt_thread_info *info,
1814 struct mdt_lock_handle *lhc)
1816 struct mdt_reint_record *rr = &info->mti_rr;
1817 struct md_attr *ma = &info->mti_attr;
1818 struct ptlrpc_request *req = mdt_info_req(info);
1819 struct mdt_object *msrcdir = NULL;
1820 struct mdt_object *mtgtdir = NULL;
1821 struct mdt_object *mold;
1822 struct mdt_object *mnew = NULL;
1823 struct mdt_lock_handle *lh_srcdirp;
1824 struct mdt_lock_handle *lh_tgtdirp;
1825 struct mdt_lock_handle *lh_oldp = NULL;
1826 struct mdt_lock_handle *lh_newp = NULL;
1827 struct lu_fid *old_fid = &info->mti_tmp_fid1;
1828 struct lu_fid *new_fid = &info->mti_tmp_fid2;
1830 bool reverse = false;
1835 DEBUG_REQ(D_INODE, req, "rename "DFID"/"DNAME" to "DFID"/"DNAME,
1836 PFID(rr->rr_fid1), PNAME(&rr->rr_name),
1837 PFID(rr->rr_fid2), PNAME(&rr->rr_tgt_name));
1839 /* find both parents. */
1840 msrcdir = mdt_object_find_check(info, rr->rr_fid1, 0);
1841 if (IS_ERR(msrcdir))
1842 RETURN(PTR_ERR(msrcdir));
1844 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME3, 5);
1846 if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1848 mdt_object_get(info->mti_env, mtgtdir);
1850 /* Check if the @msrcdir is not a child of the @mtgtdir,
1851 * otherwise a reverse locking must take place. */
1852 rc = mdt_is_subdir(info, msrcdir, rr->rr_fid2);
1856 GOTO(out_put_srcdir, rc);
1858 mtgtdir = mdt_object_find_check(info, rr->rr_fid2, 1);
1859 if (IS_ERR(mtgtdir))
1860 GOTO(out_put_srcdir, rc = PTR_ERR(mtgtdir));
1863 /* source needs to be looked up after locking source parent, otherwise
1864 * this rename may race with unlink source, and cause rename hang, see
1865 * sanityn.sh 55b, so check parents first, if later we found source is
1866 * remote, relock parents. */
1867 cos_incompat = (mdt_object_remote(msrcdir) ||
1868 mdt_object_remote(mtgtdir));
1870 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME4, 5);
1872 /* lock parents in the proper order. */
1873 lh_srcdirp = &info->mti_lh[MDT_LH_PARENT];
1874 lh_tgtdirp = &info->mti_lh[MDT_LH_CHILD];
1877 mdt_lock_pdo_init(lh_srcdirp, LCK_PW, &rr->rr_name);
1878 mdt_lock_pdo_init(lh_tgtdirp, LCK_PW, &rr->rr_tgt_name);
1881 rc = mdt_object_lock_save(info, mtgtdir, lh_tgtdirp, 1,
1884 GOTO(out_put_tgtdir, rc);
1886 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
1888 rc = mdt_object_lock_save(info, msrcdir, lh_srcdirp, 0,
1891 mdt_object_unlock(info, mtgtdir, lh_tgtdirp, rc);
1892 GOTO(out_put_tgtdir, rc);
1895 rc = mdt_object_lock_save(info, msrcdir, lh_srcdirp, 0,
1898 GOTO(out_put_tgtdir, rc);
1900 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
1902 if (mtgtdir != msrcdir) {
1903 rc = mdt_object_lock_save(info, mtgtdir, lh_tgtdirp, 1,
1905 } else if (lh_srcdirp->mlh_pdo_hash !=
1906 lh_tgtdirp->mlh_pdo_hash) {
1907 rc = mdt_pdir_hash_lock(info, lh_tgtdirp, mtgtdir,
1908 MDS_INODELOCK_UPDATE,
1910 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK2, 10);
1913 mdt_object_unlock(info, msrcdir, lh_srcdirp, rc);
1914 GOTO(out_put_tgtdir, rc);
1918 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME4, 5);
1919 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME2, 5);
1921 /* find mold object. */
1923 rc = mdt_lookup_version_check(info, msrcdir, &rr->rr_name, old_fid, 2);
1925 GOTO(out_unlock_parents, rc);
1927 if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
1928 GOTO(out_unlock_parents, rc = -EINVAL);
1930 if (!fid_is_md_operative(old_fid))
1931 GOTO(out_unlock_parents, rc = -EPERM);
1933 mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
1935 GOTO(out_unlock_parents, rc = PTR_ERR(mold));
1937 /* Check if @mtgtdir is subdir of @mold, before locking child
1938 * to avoid reverse locking. */
1939 if (mtgtdir != msrcdir) {
1940 rc = mdt_is_subdir(info, mtgtdir, old_fid);
1942 GOTO(out_put_old, rc);
1945 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(mold));
1946 /* save version after locking */
1947 mdt_version_get_save(info, mold, 2);
1949 if (!cos_incompat && mdt_object_remote(mold)) {
1950 cos_incompat = true;
1951 mdt_object_put(info->mti_env, mold);
1952 mdt_object_unlock(info, mtgtdir, lh_tgtdirp, -EAGAIN);
1953 mdt_object_unlock(info, msrcdir, lh_srcdirp, -EAGAIN);
1957 /* find mnew object:
1958 * mnew target object may not exist now
1959 * lookup with version checking */
1961 rc = mdt_lookup_version_check(info, mtgtdir, &rr->rr_tgt_name, new_fid,
1964 /* the new_fid should have been filled at this moment */
1965 if (lu_fid_eq(old_fid, new_fid))
1966 GOTO(out_put_old, rc);
1968 if (lu_fid_eq(new_fid, rr->rr_fid1) ||
1969 lu_fid_eq(new_fid, rr->rr_fid2))
1970 GOTO(out_put_old, rc = -EINVAL);
1972 if (!fid_is_md_operative(new_fid))
1973 GOTO(out_put_old, rc = -EPERM);
1975 mnew = mdt_object_find(info->mti_env, info->mti_mdt, new_fid);
1977 GOTO(out_put_old, rc = PTR_ERR(mnew));
1979 if (mdt_object_remote(mnew)) {
1980 struct mdt_body *repbody;
1982 /* Always send rename req to the target child MDT */
1983 repbody = req_capsule_server_get(info->mti_pill,
1985 LASSERT(repbody != NULL);
1986 repbody->mbo_fid1 = *new_fid;
1987 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
1988 GOTO(out_put_new, rc = -EXDEV);
1990 /* Before locking the target dir, check we do not replace
1991 * a dir with a non-dir, otherwise it may deadlock with
1992 * link op which tries to create a link in this dir
1993 * back to this non-dir. */
1994 if (S_ISDIR(lu_object_attr(&mnew->mot_obj)) &&
1995 !S_ISDIR(lu_object_attr(&mold->mot_obj)))
1996 GOTO(out_put_new, rc = -EISDIR);
1998 lh_oldp = &info->mti_lh[MDT_LH_OLD];
1999 mdt_lock_reg_init(lh_oldp, LCK_EX);
2000 lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_XATTR;
2001 if (mdt_object_remote(msrcdir)) {
2002 /* Enqueue lookup lock from the parent MDT */
2003 rc = mdt_remote_object_lock(info, msrcdir,
2004 mdt_object_fid(mold),
2005 &lh_oldp->mlh_rreg_lh,
2006 lh_oldp->mlh_rreg_mode,
2007 MDS_INODELOCK_LOOKUP,
2010 GOTO(out_put_new, rc);
2012 lock_ibits &= ~MDS_INODELOCK_LOOKUP;
2015 rc = mdt_reint_object_lock(info, mold, lh_oldp, lock_ibits,
2018 GOTO(out_unlock_old, rc);
2020 /* Check if @msrcdir is subdir of @mnew, before locking child
2021 * to avoid reverse locking. */
2022 if (mtgtdir != msrcdir) {
2023 rc = mdt_is_subdir(info, msrcdir, new_fid);
2025 GOTO(out_unlock_old, rc);
2028 /* We used to acquire MDS_INODELOCK_FULL here but we
2029 * can't do this now because a running HSM restore on
2030 * the rename onto victim will hold the layout
2031 * lock. See LU-4002. */
2033 lh_newp = &info->mti_lh[MDT_LH_NEW];
2034 mdt_lock_reg_init(lh_newp, LCK_EX);
2035 rc = mdt_reint_object_lock(info, mnew, lh_newp,
2036 MDS_INODELOCK_LOOKUP |
2037 MDS_INODELOCK_UPDATE,
2040 GOTO(out_unlock_old, rc);
2042 /* get and save version after locking */
2043 mdt_version_get_save(info, mnew, 3);
2044 } else if (rc != -EREMOTE && rc != -ENOENT) {
2045 GOTO(out_put_old, rc);
2047 lh_oldp = &info->mti_lh[MDT_LH_OLD];
2048 mdt_lock_reg_init(lh_oldp, LCK_EX);
2049 lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_XATTR;
2050 if (mdt_object_remote(msrcdir)) {
2051 /* Enqueue lookup lock from the parent MDT */
2052 rc = mdt_remote_object_lock(info, msrcdir,
2053 mdt_object_fid(mold),
2054 &lh_oldp->mlh_rreg_lh,
2055 lh_oldp->mlh_rreg_mode,
2056 MDS_INODELOCK_LOOKUP,
2059 GOTO(out_put_old, rc);
2061 lock_ibits &= ~MDS_INODELOCK_LOOKUP;
2064 rc = mdt_reint_object_lock(info, mold, lh_oldp, lock_ibits,
2067 GOTO(out_unlock_old, rc);
2069 mdt_enoent_version_save(info, 3);
2072 /* step 5: rename it */
2073 mdt_reint_init_ma(info, ma);
2075 mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
2076 OBD_FAIL_MDS_REINT_RENAME_WRITE);
2079 mutex_lock(&mnew->mot_lov_mutex);
2081 rc = mdo_rename(info->mti_env, mdt_object_child(msrcdir),
2082 mdt_object_child(mtgtdir), old_fid, &rr->rr_name,
2083 mnew != NULL ? mdt_object_child(mnew) : NULL,
2084 &rr->rr_tgt_name, ma);
2087 mutex_unlock(&mnew->mot_lov_mutex);
2089 /* handle last link of tgt object */
2091 mdt_counter_incr(req, LPROC_MDT_RENAME);
2093 mdt_handle_last_unlink(info, mnew, ma);
2094 mdt_dom_check_and_discard(info, mnew);
2097 mdt_rename_counter_tally(info, info->mti_mdt, req,
2103 mdt_object_unlock(info, mnew, lh_newp, rc);
2105 mdt_object_unlock(info, mold, lh_oldp, rc);
2108 mdt_object_put(info->mti_env, mnew);
2110 mdt_object_put(info->mti_env, mold);
2112 mdt_object_unlock(info, mtgtdir, lh_tgtdirp, rc);
2113 mdt_object_unlock(info, msrcdir, lh_srcdirp, rc);
2115 mdt_object_put(info->mti_env, mtgtdir);
2117 mdt_object_put(info->mti_env, msrcdir);
2121 static int mdt_reint_rename_or_migrate(struct mdt_thread_info *info,
2122 struct mdt_lock_handle *lhc, bool rename)
2124 struct mdt_reint_record *rr = &info->mti_rr;
2125 struct ptlrpc_request *req = mdt_info_req(info);
2126 struct lustre_handle rename_lh = { 0 };
2130 if (info->mti_dlm_req)
2131 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
2133 if (!fid_is_md_operative(rr->rr_fid1) ||
2134 !fid_is_md_operative(rr->rr_fid2))
2137 /* Note: do not enqueue rename lock for replay request, because
2138 * if other MDT holds rename lock, but being blocked to wait for
2139 * this MDT to finish its recovery, and the failover MDT can not
2140 * get rename lock, which will cause deadlock. */
2141 if (!req_is_replay(req)) {
2142 rc = mdt_rename_lock(info, &rename_lh);
2144 CERROR("%s: can't lock FS for rename: rc = %d\n",
2145 mdt_obd_name(info->mti_mdt), rc);
2151 rc = mdt_reint_rename_internal(info, lhc);
2153 rc = mdt_reint_migrate_internal(info, lhc);
2155 if (lustre_handle_is_used(&rename_lh))
2156 mdt_rename_unlock(&rename_lh);
2161 static int mdt_reint_rename(struct mdt_thread_info *info,
2162 struct mdt_lock_handle *lhc)
2164 return mdt_reint_rename_or_migrate(info, lhc, true);
2167 static int mdt_reint_migrate(struct mdt_thread_info *info,
2168 struct mdt_lock_handle *lhc)
2170 return mdt_reint_rename_or_migrate(info, lhc, false);
2173 static int mdt_reint_resync(struct mdt_thread_info *info,
2174 struct mdt_lock_handle *lhc)
2176 struct mdt_reint_record *rr = &info->mti_rr;
2177 struct ptlrpc_request *req = mdt_info_req(info);
2178 struct md_attr *ma = &info->mti_attr;
2179 struct mdt_object *mo;
2180 struct ldlm_lock *lease;
2181 struct mdt_body *repbody;
2182 struct md_layout_change layout = { 0 };
2187 DEBUG_REQ(D_INODE, req, DFID": FLR file resync\n", PFID(rr->rr_fid1));
2189 if (info->mti_dlm_req)
2190 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
2192 mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
2194 GOTO(out, rc = PTR_ERR(mo));
2196 if (!mdt_object_exists(mo))
2197 GOTO(out_obj, rc = -ENOENT);
2199 if (!S_ISREG(lu_object_attr(&mo->mot_obj)))
2200 GOTO(out_obj, rc = -EINVAL);
2202 if (mdt_object_remote(mo))
2203 GOTO(out_obj, rc = -EREMOTE);
2205 lease = ldlm_handle2lock(rr->rr_handle);
2207 GOTO(out_obj, rc = -ESTALE);
2209 /* It's really necessary to grab open_sem and check if the lease lock
2210 * has been lost. There would exist a concurrent writer coming in and
2211 * generating some dirty data in memory cache, the writeback would fail
2212 * after the layout version is increased by MDS_REINT_RESYNC RPC. */
2213 if (!down_write_trylock(&mo->mot_open_sem))
2214 GOTO(out_put_lease, rc = -EBUSY);
2216 lock_res_and_lock(lease);
2217 lease_broken = ldlm_is_cancel(lease);
2218 unlock_res_and_lock(lease);
2220 GOTO(out_unlock, rc = -EBUSY);
2222 /* the file has yet opened by anyone else after we took the lease. */
2223 layout.mlc_opc = MD_LAYOUT_RESYNC;
2224 rc = mdt_layout_change(info, mo, &layout);
2226 GOTO(out_unlock, rc);
2228 ma->ma_need = MA_INODE;
2230 rc = mdt_attr_get_complex(info, mo, ma);
2232 GOTO(out_unlock, rc);
2234 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2235 mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
2239 up_write(&mo->mot_open_sem);
2241 LDLM_LOCK_PUT(lease);
2243 mdt_object_put(info->mti_env, mo);
2245 mdt_client_compatibility(info);
2246 rc2 = mdt_fix_reply(info);
2252 struct mdt_reinter {
2253 int (*mr_handler)(struct mdt_thread_info *, struct mdt_lock_handle *);
2254 enum lprocfs_extra_opc mr_extra_opc;
2257 static const struct mdt_reinter mdt_reinters[] = {
2259 .mr_handler = &mdt_reint_setattr,
2260 .mr_extra_opc = MDS_REINT_SETATTR,
2263 .mr_handler = &mdt_reint_create,
2264 .mr_extra_opc = MDS_REINT_CREATE,
2267 .mr_handler = &mdt_reint_link,
2268 .mr_extra_opc = MDS_REINT_LINK,
2271 .mr_handler = &mdt_reint_unlink,
2272 .mr_extra_opc = MDS_REINT_UNLINK,
2275 .mr_handler = &mdt_reint_rename,
2276 .mr_extra_opc = MDS_REINT_RENAME,
2279 .mr_handler = &mdt_reint_open,
2280 .mr_extra_opc = MDS_REINT_OPEN,
2282 [REINT_SETXATTR] = {
2283 .mr_handler = &mdt_reint_setxattr,
2284 .mr_extra_opc = MDS_REINT_SETXATTR,
2287 .mr_handler = &mdt_reint_unlink,
2288 .mr_extra_opc = MDS_REINT_UNLINK,
2291 .mr_handler = &mdt_reint_migrate,
2292 .mr_extra_opc = MDS_REINT_RENAME,
2295 .mr_handler = &mdt_reint_resync,
2296 .mr_extra_opc = MDS_REINT_RESYNC,
2300 int mdt_reint_rec(struct mdt_thread_info *info,
2301 struct mdt_lock_handle *lhc)
2303 const struct mdt_reinter *mr;
2307 if (!(info->mti_rr.rr_opcode < ARRAY_SIZE(mdt_reinters)))
2310 mr = &mdt_reinters[info->mti_rr.rr_opcode];
2311 if (mr->mr_handler == NULL)
2314 rc = (*mr->mr_handler)(info, lhc);
2316 lprocfs_counter_incr(ptlrpc_req2svc(mdt_info_req(info))->srv_stats,
2317 PTLRPC_LAST_CNTR + mr->mr_extra_opc);