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) 2010, 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_handler.c
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
42 * Author: Yury Umanets <umka@clusterfs.com>
45 #define DEBUG_SUBSYSTEM S_MDS
47 #include <linux/module.h>
48 #include <linux/pagemap.h>
50 #include <dt_object.h>
51 #include <lustre_acl.h>
52 #include <lustre_export.h>
53 #include <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_lfsck.h>
55 #include <lustre_log.h>
56 #include <lustre_nodemap.h>
57 #include <lustre_mds.h>
58 #include <uapi/linux/lustre/lustre_param.h>
59 #include <lustre_quota.h>
60 #include <lustre_swab.h>
61 #include <lustre_lmv.h>
63 #include <obd_support.h>
64 #include <lustre_barrier.h>
65 #include <obd_cksum.h>
66 #include <llog_swab.h>
68 #include "mdt_internal.h"
70 static unsigned int max_mod_rpcs_per_client = 8;
71 module_param(max_mod_rpcs_per_client, uint, 0644);
72 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
74 mdl_mode_t mdt_mdl_lock_modes[] = {
75 [LCK_MINMODE] = MDL_MINMODE,
82 [LCK_GROUP] = MDL_GROUP
85 enum ldlm_mode mdt_dlm_lock_modes[] = {
86 [MDL_MINMODE] = LCK_MINMODE,
93 [MDL_GROUP] = LCK_GROUP
96 static struct mdt_device *mdt_dev(struct lu_device *d);
98 static const struct lu_object_operations mdt_obj_ops;
100 /* Slab for MDT object allocation */
101 static struct kmem_cache *mdt_object_kmem;
103 /* For HSM restore handles */
104 struct kmem_cache *mdt_hsm_cdt_kmem;
106 /* For HSM request handles */
107 struct kmem_cache *mdt_hsm_car_kmem;
109 static struct lu_kmem_descr mdt_caches[] = {
111 .ckd_cache = &mdt_object_kmem,
112 .ckd_name = "mdt_obj",
113 .ckd_size = sizeof(struct mdt_object)
116 .ckd_cache = &mdt_hsm_cdt_kmem,
117 .ckd_name = "mdt_cdt_restore_handle",
118 .ckd_size = sizeof(struct cdt_restore_handle)
121 .ckd_cache = &mdt_hsm_car_kmem,
122 .ckd_name = "mdt_cdt_agent_req",
123 .ckd_size = sizeof(struct cdt_agent_req)
130 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
134 return rep->lock_policy_res1 & op_flag;
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, __u64 op_flag)
141 info->mti_opdata &= ~op_flag;
142 tgt_opdata_clear(info->mti_env, op_flag);
145 rep->lock_policy_res1 &= ~op_flag;
148 void mdt_set_disposition(struct mdt_thread_info *info,
149 struct ldlm_reply *rep, __u64 op_flag)
152 info->mti_opdata |= op_flag;
153 tgt_opdata_set(info->mti_env, op_flag);
156 rep->lock_policy_res1 |= op_flag;
159 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
161 lh->mlh_pdo_hash = 0;
162 lh->mlh_reg_mode = lm;
163 lh->mlh_rreg_mode = lm;
164 lh->mlh_type = MDT_REG_LOCK;
167 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock)
169 mdt_lock_reg_init(lh, lock->l_req_mode);
170 if (lock->l_req_mode == LCK_GROUP)
171 lh->mlh_gid = lock->l_policy_data.l_inodebits.li_gid;
174 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
175 const struct lu_name *lname)
177 lh->mlh_reg_mode = lock_mode;
178 lh->mlh_pdo_mode = LCK_MINMODE;
179 lh->mlh_rreg_mode = lock_mode;
180 lh->mlh_type = MDT_PDO_LOCK;
182 if (lu_name_is_valid(lname)) {
183 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
185 /* XXX Workaround for LU-2856
187 * Zero is a valid return value of full_name_hash, but
188 * several users of mlh_pdo_hash assume a non-zero
189 * hash value. We therefore map zero onto an
190 * arbitrary, but consistent value (1) to avoid
191 * problems further down the road. */
192 if (unlikely(lh->mlh_pdo_hash == 0))
193 lh->mlh_pdo_hash = 1;
195 lh->mlh_pdo_hash = 0;
199 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
200 struct mdt_lock_handle *lh)
206 * Any dir access needs couple of locks:
208 * 1) on part of dir we gonna take lookup/modify;
210 * 2) on whole dir to protect it from concurrent splitting and/or to
211 * flush client's cache for readdir().
213 * so, for a given mode and object this routine decides what lock mode
214 * to use for lock #2:
216 * 1) if caller's gonna lookup in dir then we need to protect dir from
217 * being splitted only - LCK_CR
219 * 2) if caller's gonna modify dir then we need to protect dir from
220 * being splitted and to flush cache - LCK_CW
222 * 3) if caller's gonna modify dir and that dir seems ready for
223 * splitting then we need to protect it from any type of access
224 * (lookup/modify/split) - LCK_EX --bzzz
227 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
228 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
231 * Ask underlaying level its opinion about preferable PDO lock mode
232 * having access type passed as regular lock mode:
234 * - MDL_MINMODE means that lower layer does not want to specify lock
237 * - MDL_NL means that no PDO lock should be taken. This is used in some
238 * cases. Say, for non-splittable directories no need to use PDO locks
241 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
242 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
244 if (mode != MDL_MINMODE) {
245 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
248 * Lower layer does not want to specify locking mode. We do it
249 * our selves. No special protection is needed, just flush
250 * client's cache on modification and allow concurrent
253 switch (lh->mlh_reg_mode) {
255 lh->mlh_pdo_mode = LCK_EX;
258 lh->mlh_pdo_mode = LCK_CR;
261 lh->mlh_pdo_mode = LCK_CW;
264 CERROR("Not expected lock type (0x%x)\n",
265 (int)lh->mlh_reg_mode);
270 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
274 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
277 struct mdt_device *mdt = info->mti_mdt;
278 struct lu_name *lname = &info->mti_name;
279 const char *start = fileset;
280 char *filename = info->mti_filename;
281 struct mdt_object *parent;
285 LASSERT(!info->mti_cross_ref);
288 * We may want to allow this to mount a completely separate
289 * fileset from the MDT in the future, but keeping it to
290 * ROOT/ only for now avoid potential security issues.
292 *fid = mdt->mdt_md_root_fid;
294 while (rc == 0 && start != NULL && *start != '\0') {
295 const char *s1 = start;
301 while (*s2 != '/' && *s2 != '\0')
309 lname->ln_namelen = s2 - s1;
310 if (lname->ln_namelen > NAME_MAX) {
315 /* reject .. as a path component */
316 if (lname->ln_namelen == 2 &&
317 strncmp(s1, "..", 2) == 0) {
322 strncpy(filename, s1, lname->ln_namelen);
323 filename[lname->ln_namelen] = '\0';
324 lname->ln_name = filename;
326 parent = mdt_object_find(info->mti_env, mdt, fid);
327 if (IS_ERR(parent)) {
328 rc = PTR_ERR(parent);
331 /* Only got the fid of this obj by name */
333 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
334 fid, &info->mti_spec);
335 mdt_object_put(info->mti_env, parent);
338 parent = mdt_object_find(info->mti_env, mdt, fid);
340 rc = PTR_ERR(parent);
342 mode = lu_object_attr(&parent->mot_obj);
343 if (!S_ISDIR(mode)) {
345 } else if (mdt_is_remote_object(info, parent, parent)) {
346 if (!mdt->mdt_enable_remote_subdir_mount) {
348 LCONSOLE_WARN("%s: subdir mount '%s' refused because 'enable_remote_subdir_mount=0': rc = %d\n",
352 LCONSOLE_INFO("%s: subdir mount '%s' is remote and may be slow\n",
357 mdt_object_put(info->mti_env, parent);
364 static int mdt_get_root(struct tgt_session_info *tsi)
366 struct mdt_thread_info *info = tsi2mdt_info(tsi);
367 struct mdt_device *mdt = info->mti_mdt;
368 struct mdt_body *repbody;
369 char *fileset = NULL, *buffer = NULL;
371 struct obd_export *exp = info->mti_exp;
372 char *nodemap_fileset;
376 rc = mdt_check_ucred(info);
378 GOTO(out, rc = err_serious(rc));
380 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
381 GOTO(out, rc = err_serious(-ENOMEM));
383 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
384 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
385 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
387 GOTO(out, rc = err_serious(-EFAULT));
390 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
391 if (nodemap_fileset && nodemap_fileset[0]) {
392 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
394 /* consider fileset from client as a sub-fileset
395 * of the nodemap one */
396 OBD_ALLOC(buffer, PATH_MAX + 1);
398 GOTO(out, rc = err_serious(-ENOMEM));
399 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
400 nodemap_fileset, fileset) >= PATH_MAX + 1)
401 GOTO(out, rc = err_serious(-EINVAL));
404 /* enforce fileset as specified in the nodemap */
405 fileset = nodemap_fileset;
410 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
411 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
413 GOTO(out, rc = err_serious(rc));
415 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
417 repbody->mbo_valid |= OBD_MD_FLID;
421 mdt_thread_info_fini(info);
423 OBD_FREE(buffer, PATH_MAX+1);
427 static int mdt_statfs(struct tgt_session_info *tsi)
429 struct ptlrpc_request *req = tgt_ses_req(tsi);
430 struct mdt_thread_info *info = tsi2mdt_info(tsi);
431 struct mdt_device *mdt = info->mti_mdt;
432 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
433 struct md_device *next = mdt->mdt_child;
434 struct ptlrpc_service_part *svcpt;
435 struct obd_statfs *osfs;
436 struct mdt_body *reqbody = NULL;
437 struct mdt_statfs_cache *msf;
438 ktime_t kstart = ktime_get();
443 svcpt = req->rq_rqbd->rqbd_svcpt;
445 /* This will trigger a watchdog timeout */
446 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
447 (MDT_SERVICE_WATCHDOG_FACTOR *
448 at_get(&svcpt->scp_at_estimate)) + 1);
450 rc = mdt_check_ucred(info);
452 GOTO(out, rc = err_serious(rc));
454 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
455 GOTO(out, rc = err_serious(-ENOMEM));
457 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
459 GOTO(out, rc = -EPROTO);
461 if (mdt_is_sum_statfs_client(req->rq_export) &&
462 lustre_packed_msg_size(req->rq_reqmsg) ==
463 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
464 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
465 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
466 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
469 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
470 msf = &mdt->mdt_sum_osfs;
472 msf = &mdt->mdt_osfs;
474 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
475 /** statfs data is too old, get up-to-date one */
476 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
477 rc = next->md_ops->mdo_statfs(info->mti_env,
480 rc = dt_statfs(info->mti_env, mdt->mdt_bottom,
484 spin_lock(&mdt->mdt_lock);
485 msf->msf_osfs = *osfs;
486 msf->msf_age = ktime_get_seconds();
487 spin_unlock(&mdt->mdt_lock);
489 /** use cached statfs data */
490 spin_lock(&mdt->mdt_lock);
491 *osfs = msf->msf_osfs;
492 spin_unlock(&mdt->mdt_lock);
495 /* at least try to account for cached pages. its still racy and
496 * might be under-reporting if clients haven't announced their
497 * caches with brw recently */
498 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
499 " pending %llu free %llu avail %llu\n",
500 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
501 tgd->tgd_tot_pending,
502 osfs->os_bfree << tgd->tgd_blockbits,
503 osfs->os_bavail << tgd->tgd_blockbits);
505 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
506 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
507 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
509 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
510 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
511 "%llu objects: %llu free; state %x\n",
512 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
513 osfs->os_files, osfs->os_ffree, osfs->os_state);
515 if (!exp_grant_param_supp(tsi->tsi_exp) &&
516 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
517 /* clients which don't support OBD_CONNECT_GRANT_PARAM
518 * should not see a block size > page size, otherwise
519 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
520 * block size which is the biggest block size known to work
521 * with all client's page size. */
522 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
523 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
524 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
525 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
528 mdt_counter_incr(req, LPROC_MDT_STATFS,
529 ktime_us_delta(ktime_get(), kstart));
531 mdt_thread_info_fini(info);
535 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *is_dom_only)
537 struct lov_comp_md_v1 *comp_v1;
538 struct lov_mds_md *v1;
540 __u32 dom_stripesize = 0;
542 bool has_ost_stripes = false;
549 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
552 comp_v1 = (struct lov_comp_md_v1 *)lmm;
553 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
554 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
556 /* Fast check for DoM entry with no mirroring, should be the first */
557 if (le16_to_cpu(comp_v1->lcm_mirror_count) == 0 &&
558 lov_pattern(le32_to_cpu(v1->lmm_pattern)) != LOV_PATTERN_MDT)
561 /* check all entries otherwise */
562 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
563 struct lov_comp_md_entry_v1 *lcme;
565 lcme = &comp_v1->lcm_entries[i];
566 if (!(le32_to_cpu(lcme->lcme_flags) & LCME_FL_INIT))
569 off = le32_to_cpu(lcme->lcme_offset);
570 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
572 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) ==
574 dom_stripesize = le32_to_cpu(v1->lmm_stripe_size);
576 has_ost_stripes = true;
578 if (dom_stripesize && has_ost_stripes)
579 RETURN(dom_stripesize);
581 /* DoM-only case exits here */
582 if (is_dom_only && dom_stripesize)
584 RETURN(dom_stripesize);
588 * Pack size attributes into the reply.
590 int mdt_pack_size2body(struct mdt_thread_info *info,
591 const struct lu_fid *fid, struct lustre_handle *lh)
594 struct md_attr *ma = &info->mti_attr;
596 bool dom_lock = false;
600 LASSERT(ma->ma_attr.la_valid & LA_MODE);
602 if (!S_ISREG(ma->ma_attr.la_mode) ||
603 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
606 dom_stripe = mdt_lmm_dom_stripesize(ma->ma_lmm);
607 /* no DoM stripe, no size in reply */
611 if (lustre_handle_is_used(lh)) {
612 struct ldlm_lock *lock;
614 lock = ldlm_handle2lock(lh);
616 dom_lock = ldlm_has_dom(lock);
621 /* no DoM lock, no size in reply */
625 /* Either DoM lock exists or LMM has only DoM stripe then
626 * return size on body. */
627 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
629 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
633 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
635 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
637 * \param info thread info object
638 * \param repbody reply to pack ACLs into
639 * \param o mdt object of file to examine
640 * \param nodemap nodemap of client to reply to
642 * \retval -errno error getting or parsing ACL from disk
644 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
645 struct mdt_object *o, struct lu_nodemap *nodemap)
647 const struct lu_env *env = info->mti_env;
648 struct md_object *next = mdt_object_child(o);
649 struct lu_buf *buf = &info->mti_buf;
650 struct mdt_device *mdt = info->mti_mdt;
651 struct req_capsule *pill = info->mti_pill;
656 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
657 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
658 if (buf->lb_len == 0)
662 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
664 if (rc == -ENODATA) {
665 repbody->mbo_aclsize = 0;
666 repbody->mbo_valid |= OBD_MD_FLACL;
668 } else if (rc == -EOPNOTSUPP) {
672 exp_connect_large_acl(info->mti_exp) &&
673 buf->lb_buf != info->mti_big_acl) {
674 if (info->mti_big_acl == NULL) {
675 info->mti_big_aclsize =
677 mdt->mdt_max_ea_size,
679 OBD_ALLOC_LARGE(info->mti_big_acl,
680 info->mti_big_aclsize);
681 if (info->mti_big_acl == NULL) {
682 info->mti_big_aclsize = 0;
683 CERROR("%s: unable to grow "
686 PFID(mdt_object_fid(o)));
691 CDEBUG(D_INODE, "%s: grow the "DFID
692 " ACL buffer to size %d\n",
694 PFID(mdt_object_fid(o)),
695 info->mti_big_aclsize);
697 buf->lb_buf = info->mti_big_acl;
698 buf->lb_len = info->mti_big_aclsize;
703 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
704 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
713 acl_buflen = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
714 if (acl_buflen >= rc)
717 /* If LOV/LMA EA is small, we can reuse part of their buffer */
718 client = ptlrpc_req_get_repsize(pill->rc_req);
719 server = lustre_packed_msg_size(pill->rc_req->rq_repmsg);
720 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
721 lmm_buflen = req_capsule_get_size(pill, &RMF_MDT_MD,
723 lmmsize = repbody->mbo_eadatasize;
726 if (client < server - acl_buflen - lmm_buflen + rc + lmmsize) {
727 CDEBUG(D_INODE, "%s: client prepared buffer size %d "
728 "is not big enough with the ACL size %d (%d)\n",
729 mdt_obd_name(mdt), client, rc,
730 server - acl_buflen - lmm_buflen + rc + lmmsize);
731 repbody->mbo_aclsize = 0;
732 repbody->mbo_valid &= ~OBD_MD_FLACL;
737 if (buf->lb_buf == info->mti_big_acl)
738 info->mti_big_acl_used = 1;
740 rc = nodemap_map_acl(nodemap, buf->lb_buf,
741 rc, NODEMAP_FS_TO_CLIENT);
742 /* if all ACLs mapped out, rc is still >= 0 */
744 CERROR("%s: nodemap_map_acl unable to parse "DFID
745 " ACL: rc = %d\n", mdt_obd_name(mdt),
746 PFID(mdt_object_fid(o)), rc);
747 repbody->mbo_aclsize = 0;
748 repbody->mbo_valid &= ~OBD_MD_FLACL;
750 repbody->mbo_aclsize = rc;
751 repbody->mbo_valid |= OBD_MD_FLACL;
760 /* XXX Look into layout in MDT layer. */
761 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
763 struct lov_comp_md_v1 *comp_v1;
764 struct lov_mds_md *v1;
767 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
768 comp_v1 = (struct lov_comp_md_v1 *)lmm;
770 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
771 v1 = (struct lov_mds_md *)((char *)comp_v1 +
772 comp_v1->lcm_entries[i].lcme_offset);
773 /* We don't support partial release for now */
774 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
779 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
784 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
785 const struct lu_attr *attr, const struct lu_fid *fid)
787 struct md_attr *ma = &info->mti_attr;
788 struct obd_export *exp = info->mti_exp;
789 struct lu_nodemap *nodemap = NULL;
791 LASSERT(ma->ma_valid & MA_INODE);
793 if (attr->la_valid & LA_ATIME) {
794 b->mbo_atime = attr->la_atime;
795 b->mbo_valid |= OBD_MD_FLATIME;
797 if (attr->la_valid & LA_MTIME) {
798 b->mbo_mtime = attr->la_mtime;
799 b->mbo_valid |= OBD_MD_FLMTIME;
801 if (attr->la_valid & LA_CTIME) {
802 b->mbo_ctime = attr->la_ctime;
803 b->mbo_valid |= OBD_MD_FLCTIME;
805 if (attr->la_valid & LA_BTIME) {
806 b->mbo_btime = attr->la_btime;
807 b->mbo_valid |= OBD_MD_FLBTIME;
809 if (attr->la_valid & LA_FLAGS) {
810 b->mbo_flags = attr->la_flags;
811 b->mbo_valid |= OBD_MD_FLFLAGS;
813 if (attr->la_valid & LA_NLINK) {
814 b->mbo_nlink = attr->la_nlink;
815 b->mbo_valid |= OBD_MD_FLNLINK;
817 if (attr->la_valid & (LA_UID|LA_GID)) {
818 nodemap = nodemap_get_from_exp(exp);
822 if (attr->la_valid & LA_UID) {
823 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
824 NODEMAP_FS_TO_CLIENT,
826 b->mbo_valid |= OBD_MD_FLUID;
828 if (attr->la_valid & LA_GID) {
829 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
830 NODEMAP_FS_TO_CLIENT,
832 b->mbo_valid |= OBD_MD_FLGID;
835 if (attr->la_valid & LA_PROJID) {
836 /* TODO, nodemap for project id */
837 b->mbo_projid = attr->la_projid;
838 b->mbo_valid |= OBD_MD_FLPROJID;
841 b->mbo_mode = attr->la_mode;
842 if (attr->la_valid & LA_MODE)
843 b->mbo_valid |= OBD_MD_FLMODE;
844 if (attr->la_valid & LA_TYPE)
845 b->mbo_valid |= OBD_MD_FLTYPE;
849 b->mbo_valid |= OBD_MD_FLID;
850 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
851 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
854 if (!(attr->la_valid & LA_TYPE))
857 b->mbo_rdev = attr->la_rdev;
858 b->mbo_size = attr->la_size;
859 b->mbo_blocks = attr->la_blocks;
861 if (!S_ISREG(attr->la_mode)) {
862 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
863 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
864 /* means no objects are allocated on osts. */
865 LASSERT(!(ma->ma_valid & MA_LOV));
866 /* just ignore blocks occupied by extend attributes on MDS */
868 /* if no object is allocated on osts, the size on mds is valid.
870 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
871 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
872 if (mdt_hsm_is_released(ma->ma_lmm)) {
873 /* A released file stores its size on MDS. */
874 /* But return 1 block for released file, unless tools
875 * like tar will consider it fully sparse. (LU-3864)
877 if (unlikely(b->mbo_size == 0))
881 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
882 } else if (info->mti_som_valid) { /* som is valid */
883 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
884 } else if (ma->ma_valid & MA_SOM) { /* lsom is valid */
885 b->mbo_valid |= OBD_MD_FLLAZYSIZE | OBD_MD_FLLAZYBLOCKS;
886 b->mbo_size = ma->ma_som.ms_size;
887 b->mbo_blocks = ma->ma_som.ms_blocks;
891 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE ||
892 b->mbo_valid & OBD_MD_FLLAZYSIZE))
893 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
894 PFID(fid), (unsigned long long)b->mbo_size);
897 if (!IS_ERR_OR_NULL(nodemap))
898 nodemap_putref(nodemap);
901 static inline int mdt_body_has_lov(const struct lu_attr *la,
902 const struct mdt_body *body)
904 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
905 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
908 void mdt_client_compatibility(struct mdt_thread_info *info)
910 struct mdt_body *body;
911 struct ptlrpc_request *req = mdt_info_req(info);
912 struct obd_export *exp = req->rq_export;
913 struct md_attr *ma = &info->mti_attr;
914 struct lu_attr *la = &ma->ma_attr;
917 if (exp_connect_layout(exp))
918 /* the client can deal with 16-bit lmm_stripe_count */
921 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
923 if (!mdt_body_has_lov(la, body))
926 /* now we have a reply with a lov for a client not compatible with the
927 * layout lock so we have to clean the layout generation number */
928 if (S_ISREG(la->la_mode))
929 ma->ma_lmm->lmm_layout_gen = 0;
933 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
934 struct mdt_object *o)
936 const struct lu_env *env = info->mti_env;
939 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
948 /* Is it a directory? Let's check for the LMV as well */
949 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
950 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
954 rc2 = mo_xattr_get(env, mdt_object_child(o),
956 XATTR_NAME_DEFAULT_LMV);
958 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
966 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
969 const struct lu_env *env = info->mti_env;
973 LASSERT(info->mti_big_lmm_used == 0);
974 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
978 /* big_lmm may need to be grown */
979 if (info->mti_big_lmmsize < rc) {
980 int size = size_roundup_power2(rc);
982 if (info->mti_big_lmmsize > 0) {
983 /* free old buffer */
984 LASSERT(info->mti_big_lmm);
985 OBD_FREE_LARGE(info->mti_big_lmm,
986 info->mti_big_lmmsize);
987 info->mti_big_lmm = NULL;
988 info->mti_big_lmmsize = 0;
991 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
992 if (info->mti_big_lmm == NULL)
994 info->mti_big_lmmsize = size;
996 LASSERT(info->mti_big_lmmsize >= rc);
998 info->mti_buf.lb_buf = info->mti_big_lmm;
999 info->mti_buf.lb_len = info->mti_big_lmmsize;
1000 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
1005 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1006 struct md_attr *ma, const char *name)
1008 struct md_object *next = mdt_object_child(o);
1009 struct lu_buf *buf = &info->mti_buf;
1012 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1013 buf->lb_buf = ma->ma_lmm;
1014 buf->lb_len = ma->ma_lmm_size;
1015 LASSERT(!(ma->ma_valid & MA_LOV));
1016 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1017 buf->lb_buf = ma->ma_lmv;
1018 buf->lb_len = ma->ma_lmv_size;
1019 LASSERT(!(ma->ma_valid & MA_LMV));
1020 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1021 buf->lb_buf = ma->ma_default_lmv;
1022 buf->lb_len = ma->ma_default_lmv_size;
1023 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
1028 LASSERT(buf->lb_buf);
1030 rc = mo_xattr_get(info->mti_env, next, buf, name);
1034 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1035 if (info->mti_big_lmm_used)
1036 ma->ma_lmm = info->mti_big_lmm;
1038 /* NOT return LOV EA with hole to old client. */
1039 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
1040 LOV_PATTERN_F_HOLE) &&
1041 !(exp_connect_flags(info->mti_exp) &
1042 OBD_CONNECT_LFSCK)) {
1045 ma->ma_lmm_size = rc;
1046 ma->ma_valid |= MA_LOV;
1048 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1049 if (info->mti_big_lmm_used)
1050 ma->ma_lmv = info->mti_big_lmm;
1052 ma->ma_lmv_size = rc;
1053 ma->ma_valid |= MA_LMV;
1054 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1055 ma->ma_default_lmv_size = rc;
1056 ma->ma_valid |= MA_LMV_DEF;
1059 /* Update mdt_max_mdsize so all clients will be aware that */
1060 if (info->mti_mdt->mdt_max_mdsize < rc)
1061 info->mti_mdt->mdt_max_mdsize = rc;
1064 } else if (rc == -ENODATA) {
1067 } else if (rc == -ERANGE) {
1068 /* Default LMV has fixed size, so it must be able to fit
1069 * in the original buffer */
1070 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
1072 rc = mdt_big_xattr_get(info, o, name);
1074 info->mti_big_lmm_used = 1;
1082 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1083 struct md_attr *ma, const char *name)
1087 if (!info->mti_big_lmm) {
1088 OBD_ALLOC(info->mti_big_lmm, PAGE_SIZE);
1089 if (!info->mti_big_lmm)
1091 info->mti_big_lmmsize = PAGE_SIZE;
1094 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1095 ma->ma_lmm = info->mti_big_lmm;
1096 ma->ma_lmm_size = info->mti_big_lmmsize;
1097 ma->ma_valid &= ~MA_LOV;
1098 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1099 ma->ma_lmv = info->mti_big_lmm;
1100 ma->ma_lmv_size = info->mti_big_lmmsize;
1101 ma->ma_valid &= ~MA_LMV;
1106 LASSERT(!info->mti_big_lmm_used);
1107 rc = __mdt_stripe_get(info, o, ma, name);
1108 /* since big_lmm is always used here, clear 'used' flag to avoid
1109 * assertion in mdt_big_xattr_get().
1111 info->mti_big_lmm_used = 0;
1116 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1117 struct lu_fid *pfid)
1119 struct lu_buf *buf = &info->mti_buf;
1120 struct link_ea_header *leh;
1121 struct link_ea_entry *lee;
1125 buf->lb_buf = info->mti_big_lmm;
1126 buf->lb_len = info->mti_big_lmmsize;
1127 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1128 buf, XATTR_NAME_LINK);
1129 /* ignore errors, MA_PFID won't be set and it is
1130 * up to the caller to treat this as an error */
1131 if (rc == -ERANGE || buf->lb_len == 0) {
1132 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1133 buf->lb_buf = info->mti_big_lmm;
1134 buf->lb_len = info->mti_big_lmmsize;
1139 if (rc < sizeof(*leh)) {
1140 CERROR("short LinkEA on "DFID": rc = %d\n",
1141 PFID(mdt_object_fid(o)), rc);
1145 leh = (struct link_ea_header *) buf->lb_buf;
1146 lee = (struct link_ea_entry *)(leh + 1);
1147 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1148 leh->leh_magic = LINK_EA_MAGIC;
1149 leh->leh_reccount = __swab32(leh->leh_reccount);
1150 leh->leh_len = __swab64(leh->leh_len);
1152 if (leh->leh_magic != LINK_EA_MAGIC)
1154 if (leh->leh_reccount == 0)
1157 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1158 fid_be_to_cpu(pfid, pfid);
1163 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
1164 struct lu_fid *pfid, struct lu_name *lname)
1166 struct lu_buf *buf = &info->mti_buf;
1167 struct link_ea_header *leh;
1168 struct link_ea_entry *lee;
1172 buf->lb_buf = info->mti_xattr_buf;
1173 buf->lb_len = sizeof(info->mti_xattr_buf);
1174 rc = mo_xattr_get(info->mti_env, mdt_object_child(o), buf,
1176 if (rc == -ERANGE) {
1177 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1178 buf->lb_buf = info->mti_big_lmm;
1179 buf->lb_len = info->mti_big_lmmsize;
1184 if (rc < sizeof(*leh)) {
1185 CERROR("short LinkEA on "DFID": rc = %d\n",
1186 PFID(mdt_object_fid(o)), rc);
1190 leh = (struct link_ea_header *)buf->lb_buf;
1191 lee = (struct link_ea_entry *)(leh + 1);
1192 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1193 leh->leh_magic = LINK_EA_MAGIC;
1194 leh->leh_reccount = __swab32(leh->leh_reccount);
1195 leh->leh_len = __swab64(leh->leh_len);
1197 if (leh->leh_magic != LINK_EA_MAGIC)
1200 if (leh->leh_reccount == 0)
1203 linkea_entry_unpack(lee, &reclen, lname, pfid);
1208 int mdt_attr_get_complex(struct mdt_thread_info *info,
1209 struct mdt_object *o, struct md_attr *ma)
1211 const struct lu_env *env = info->mti_env;
1212 struct md_object *next = mdt_object_child(o);
1213 struct lu_buf *buf = &info->mti_buf;
1214 int need = ma->ma_need;
1221 if (mdt_object_exists(o) == 0)
1222 GOTO(out, rc = -ENOENT);
1223 mode = lu_object_attr(&next->mo_lu);
1225 if (need & MA_INODE) {
1226 ma->ma_need = MA_INODE;
1227 rc = mo_attr_get(env, next, ma);
1232 (void) mdt_get_som(info, o, ma);
1233 ma->ma_valid |= MA_INODE;
1236 if (need & MA_PFID) {
1237 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1239 ma->ma_valid |= MA_PFID;
1240 /* ignore this error, parent fid is not mandatory */
1244 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1245 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1250 if (need & MA_LMV && S_ISDIR(mode)) {
1251 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1256 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1257 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1263 * In the handle of MA_INODE, we may already get the SOM attr.
1265 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1266 rc = mdt_get_som(info, o, ma);
1271 if (need & MA_HSM && S_ISREG(mode)) {
1272 buf->lb_buf = info->mti_xattr_buf;
1273 buf->lb_len = sizeof(info->mti_xattr_buf);
1274 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1275 sizeof(info->mti_xattr_buf));
1276 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1277 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1279 ma->ma_valid |= MA_HSM;
1280 else if (rc2 < 0 && rc2 != -ENODATA)
1281 GOTO(out, rc = rc2);
1284 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1285 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1286 buf->lb_buf = ma->ma_acl;
1287 buf->lb_len = ma->ma_acl_size;
1288 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1290 ma->ma_acl_size = rc2;
1291 ma->ma_valid |= MA_ACL_DEF;
1292 } else if (rc2 == -ENODATA) {
1294 ma->ma_acl_size = 0;
1296 GOTO(out, rc = rc2);
1301 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1302 rc, ma->ma_valid, ma->ma_lmm);
1306 static int mdt_getattr_internal(struct mdt_thread_info *info,
1307 struct mdt_object *o, int ma_need)
1309 struct mdt_device *mdt = info->mti_mdt;
1310 struct md_object *next = mdt_object_child(o);
1311 const struct mdt_body *reqbody = info->mti_body;
1312 struct ptlrpc_request *req = mdt_info_req(info);
1313 struct md_attr *ma = &info->mti_attr;
1314 struct lu_attr *la = &ma->ma_attr;
1315 struct req_capsule *pill = info->mti_pill;
1316 const struct lu_env *env = info->mti_env;
1317 struct mdt_body *repbody;
1318 struct lu_buf *buffer = &info->mti_buf;
1319 struct obd_export *exp = info->mti_exp;
1320 ktime_t kstart = ktime_get();
1325 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1326 RETURN(err_serious(-ENOMEM));
1328 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1332 if (mdt_object_remote(o)) {
1333 /* This object is located on remote node.*/
1334 /* Return -ENOTSUPP for old client */
1335 if (!mdt_is_dne_client(req->rq_export))
1336 GOTO(out, rc = -ENOTSUPP);
1338 repbody->mbo_fid1 = *mdt_object_fid(o);
1339 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1343 if (reqbody->mbo_eadatasize > 0) {
1344 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1345 if (buffer->lb_buf == NULL)
1346 GOTO(out, rc = -EPROTO);
1347 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1350 buffer->lb_buf = NULL;
1352 ma_need &= ~(MA_LOV | MA_LMV);
1353 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1354 mdt_obd_name(info->mti_mdt),
1355 req->rq_export->exp_client_uuid.uuid);
1358 /* from 2.12.58 intent_getattr pack default LMV in reply */
1359 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1360 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1361 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1362 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1364 ma->ma_lmv = buffer->lb_buf;
1365 ma->ma_lmv_size = buffer->lb_len;
1366 ma->ma_default_lmv = req_capsule_server_get(pill,
1367 &RMF_DEFAULT_MDT_MD);
1368 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1369 &RMF_DEFAULT_MDT_MD,
1371 ma->ma_need = MA_INODE;
1372 if (ma->ma_lmv_size > 0)
1373 ma->ma_need |= MA_LMV;
1374 if (ma->ma_default_lmv_size > 0)
1375 ma->ma_need |= MA_LMV_DEF;
1376 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1377 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1378 /* If it is dir and client require MEA, then we got MEA */
1379 /* Assumption: MDT_MD size is enough for lmv size. */
1380 ma->ma_lmv = buffer->lb_buf;
1381 ma->ma_lmv_size = buffer->lb_len;
1382 ma->ma_need = MA_INODE;
1383 if (ma->ma_lmv_size > 0) {
1384 if (reqbody->mbo_valid & OBD_MD_MEA) {
1385 ma->ma_need |= MA_LMV;
1386 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1387 ma->ma_need |= MA_LMV_DEF;
1388 ma->ma_default_lmv = buffer->lb_buf;
1390 ma->ma_default_lmv_size = buffer->lb_len;
1391 ma->ma_lmv_size = 0;
1395 ma->ma_lmm = buffer->lb_buf;
1396 ma->ma_lmm_size = buffer->lb_len;
1397 ma->ma_need = MA_INODE | MA_HSM;
1398 if (ma->ma_lmm_size > 0) {
1399 ma->ma_need |= MA_LOV;
1400 /* Older clients may crash if they getattr overstriped
1403 if (!exp_connect_overstriping(exp) &&
1404 mdt_lmm_is_overstriping(ma->ma_lmm))
1405 RETURN(-EOPNOTSUPP);
1409 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1410 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1411 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1412 /* get default stripe info for this dir. */
1413 ma->ma_need |= MA_LOV_DEF;
1415 ma->ma_need |= ma_need;
1417 rc = mdt_attr_get_complex(info, o, ma);
1419 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1420 "%s: getattr error for "DFID": rc = %d\n",
1421 mdt_obd_name(info->mti_mdt),
1422 PFID(mdt_object_fid(o)), rc);
1426 /* if file is released, check if a restore is running */
1427 if (ma->ma_valid & MA_HSM) {
1428 repbody->mbo_valid |= OBD_MD_TSTATE;
1429 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1430 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1431 repbody->mbo_t_state = MS_RESTORE;
1434 if (unlikely(!(ma->ma_valid & MA_INODE)))
1437 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1439 if (mdt_body_has_lov(la, reqbody)) {
1440 u32 stripe_count = 1;
1442 if (ma->ma_valid & MA_LOV) {
1443 LASSERT(ma->ma_lmm_size);
1444 repbody->mbo_eadatasize = ma->ma_lmm_size;
1445 if (S_ISDIR(la->la_mode))
1446 repbody->mbo_valid |= OBD_MD_FLDIREA;
1448 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1449 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1451 if (ma->ma_valid & MA_LMV) {
1452 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
1453 u32 magic = le32_to_cpu(lmv->lmv_magic);
1455 /* Return -ENOTSUPP for old client */
1456 if (!mdt_is_striped_client(req->rq_export))
1459 LASSERT(S_ISDIR(la->la_mode));
1460 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1461 repbody->mbo_eadatasize = ma->ma_lmv_size;
1462 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1464 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
1465 if (magic == LMV_MAGIC_STRIPE && lmv_is_restriping(lmv))
1466 mdt_restripe_migrate_add(info, o);
1467 else if (magic == LMV_MAGIC_V1 &&
1468 lmv_is_restriping(lmv))
1469 mdt_restripe_update_add(info, o);
1471 if (ma->ma_valid & MA_LMV_DEF) {
1472 /* Return -ENOTSUPP for old client */
1473 if (!mdt_is_striped_client(req->rq_export))
1475 LASSERT(S_ISDIR(la->la_mode));
1477 * when ll_dir_getstripe() gets default LMV, it
1478 * checks mbo_eadatasize.
1480 if (!(ma->ma_valid & MA_LMV))
1481 repbody->mbo_eadatasize =
1482 ma->ma_default_lmv_size;
1483 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1484 OBD_MD_DEFAULT_MEA);
1487 "dirent count %llu stripe count %u MDT count %d\n",
1488 ma->ma_attr.la_dirent_count, stripe_count,
1489 atomic_read(&mdt->mdt_mds_mds_conns) + 1);
1490 if (ma->ma_attr.la_dirent_count != LU_DIRENT_COUNT_UNSET &&
1491 ma->ma_attr.la_dirent_count >
1492 mdt->mdt_restriper.mdr_dir_split_count &&
1493 !fid_is_root(mdt_object_fid(o)) &&
1494 mdt->mdt_enable_dir_auto_split &&
1495 !o->mot_restriping &&
1496 stripe_count < atomic_read(&mdt->mdt_mds_mds_conns) + 1)
1497 mdt_auto_split_add(info, o);
1498 } else if (S_ISLNK(la->la_mode) &&
1499 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1500 buffer->lb_buf = ma->ma_lmm;
1501 /* eadatasize from client includes NULL-terminator, so
1502 * there is no need to read it */
1503 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1504 rc = mo_readlink(env, next, buffer);
1505 if (unlikely(rc <= 0)) {
1506 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1507 mdt_obd_name(info->mti_mdt),
1508 PFID(mdt_object_fid(o)), rc);
1511 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1513 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1515 repbody->mbo_valid |= OBD_MD_LINKNAME;
1516 /* we need to report back size with NULL-terminator
1517 * because client expects that */
1518 repbody->mbo_eadatasize = rc + 1;
1519 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1520 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1521 "on "DFID ", expected %d\n",
1522 mdt_obd_name(info->mti_mdt),
1523 rc, PFID(mdt_object_fid(o)),
1524 reqbody->mbo_eadatasize - 1);
1525 /* NULL terminate */
1526 ((char *)ma->ma_lmm)[rc] = 0;
1528 /* If the total CDEBUG() size is larger than a page, it
1529 * will print a warning to the console, avoid this by
1530 * printing just the last part of the symlink. */
1531 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1532 print_limit < rc ? "..." : "", print_limit,
1533 (char *)ma->ma_lmm + rc - print_limit, rc);
1538 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1539 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1540 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1541 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1542 repbody->mbo_max_mdsize);
1545 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1546 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1547 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1548 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1549 if (IS_ERR(nodemap))
1550 RETURN(PTR_ERR(nodemap));
1552 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1553 nodemap_putref(nodemap);
1559 mdt_counter_incr(req, LPROC_MDT_GETATTR,
1560 ktime_us_delta(ktime_get(), kstart));
1565 static int mdt_getattr(struct tgt_session_info *tsi)
1567 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1568 struct mdt_object *obj = info->mti_object;
1569 struct req_capsule *pill = info->mti_pill;
1570 struct mdt_body *reqbody;
1571 struct mdt_body *repbody;
1575 if (unlikely(info->mti_object == NULL))
1578 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1580 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1582 /* Special case for Data-on-MDT files to get data version */
1583 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1584 rc = mdt_data_version_get(tsi);
1588 /* Unlike intent case where we need to pre-fill out buffers early on
1589 * in intent policy for ldlm reasons, here we can have a much better
1590 * guess at EA size by just reading it from disk.
1591 * Exceptions are readdir and (missing) directory striping */
1593 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1594 /* No easy way to know how long is the symlink, but it cannot
1595 * be more than PATH_MAX, so we allocate +1 */
1597 /* A special case for fs ROOT: getattr there might fetch
1598 * default EA for entire fs, not just for this dir!
1600 } else if (lu_fid_eq(mdt_object_fid(obj),
1601 &info->mti_mdt->mdt_md_root_fid) &&
1602 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1603 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1605 /* Should the default strping be bigger, mdt_fix_reply
1606 * will reallocate */
1607 rc = DEF_REP_MD_SIZE;
1609 /* Read the actual EA size from disk */
1610 rc = mdt_attr_get_eabuf_size(info, obj);
1614 GOTO(out, rc = err_serious(rc));
1616 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1618 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1619 * by default. If the target object has more ACL entries, then
1620 * enlarge the buffer when necessary. */
1621 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1622 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1624 rc = req_capsule_server_pack(pill);
1625 if (unlikely(rc != 0))
1626 GOTO(out, rc = err_serious(rc));
1628 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1629 LASSERT(repbody != NULL);
1630 repbody->mbo_eadatasize = 0;
1631 repbody->mbo_aclsize = 0;
1633 rc = mdt_check_ucred(info);
1635 GOTO(out_shrink, rc);
1637 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1639 rc = mdt_getattr_internal(info, obj, 0);
1642 mdt_client_compatibility(info);
1643 rc2 = mdt_fix_reply(info);
1647 mdt_thread_info_fini(info);
1652 * Handler of layout intent RPC requiring the layout modification
1654 * \param[in] info thread environment
1655 * \param[in] obj object
1656 * \param[out] lhc object ldlm lock handle
1657 * \param[in] layout layout change descriptor
1659 * \retval 0 on success
1660 * \retval < 0 error code
1662 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1663 struct mdt_lock_handle *lhc,
1664 struct md_layout_change *layout)
1670 if (!mdt_object_exists(obj))
1673 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1676 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1681 rc = mdt_check_resent_lock(info, obj, lhc);
1687 __u64 lockpart = MDS_INODELOCK_LAYOUT;
1689 /* take layout lock to prepare layout change */
1690 if (layout->mlc_opc == MD_LAYOUT_WRITE)
1691 lockpart |= MDS_INODELOCK_UPDATE;
1693 mdt_lock_handle_init(lhc);
1694 mdt_lock_reg_init(lhc, LCK_EX);
1695 rc = mdt_reint_object_lock(info, obj, lhc, lockpart, false);
1700 mutex_lock(&obj->mot_som_mutex);
1701 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1702 mutex_unlock(&obj->mot_som_mutex);
1705 mdt_object_unlock(info, obj, lhc, 1);
1711 * Exchange MOF_LOV_CREATED flags between two objects after a
1712 * layout swap. No assumption is made on whether o1 or o2 have
1713 * created objects or not.
1715 * \param[in,out] o1 First swap layout object
1716 * \param[in,out] o2 Second swap layout object
1718 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1720 unsigned int o1_lov_created = o1->mot_lov_created;
1722 mutex_lock(&o1->mot_lov_mutex);
1723 mutex_lock(&o2->mot_lov_mutex);
1725 o1->mot_lov_created = o2->mot_lov_created;
1726 o2->mot_lov_created = o1_lov_created;
1728 mutex_unlock(&o2->mot_lov_mutex);
1729 mutex_unlock(&o1->mot_lov_mutex);
1732 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1734 struct mdt_thread_info *info;
1735 struct ptlrpc_request *req = tgt_ses_req(tsi);
1736 struct obd_export *exp = req->rq_export;
1737 struct mdt_object *o1, *o2, *o;
1738 struct mdt_lock_handle *lh1, *lh2;
1739 struct mdc_swap_layouts *msl;
1743 /* client does not support layout lock, so layout swaping
1745 * FIXME: there is a problem for old clients which don't support
1746 * layout lock yet. If those clients have already opened the file
1747 * they won't be notified at all so that old layout may still be
1748 * used to do IO. This can be fixed after file release is landed by
1749 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1750 if (!exp_connect_layout(exp))
1751 RETURN(-EOPNOTSUPP);
1753 info = tsi2mdt_info(tsi);
1754 if (unlikely(info->mti_object == NULL))
1757 if (info->mti_dlm_req != NULL)
1758 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1760 o1 = info->mti_object;
1761 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1762 &info->mti_body->mbo_fid2);
1764 GOTO(out, rc = PTR_ERR(o));
1766 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1767 GOTO(put, rc = -ENOENT);
1769 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1770 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1776 /* permission check. Make sure the calling process having permission
1777 * to write both files. */
1778 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1783 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1788 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1790 GOTO(put, rc = -EPROTO);
1792 lh1 = &info->mti_lh[MDT_LH_NEW];
1793 mdt_lock_reg_init(lh1, LCK_EX);
1794 lh2 = &info->mti_lh[MDT_LH_OLD];
1795 mdt_lock_reg_init(lh2, LCK_EX);
1797 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1798 MDS_INODELOCK_XATTR);
1802 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1803 MDS_INODELOCK_XATTR);
1807 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1808 mdt_object_child(o2), msl->msl_flags);
1812 mdt_swap_lov_flag(o1, o2);
1815 mdt_object_unlock(info, o2, lh2, rc);
1817 mdt_object_unlock(info, o1, lh1, rc);
1819 mdt_object_put(info->mti_env, o);
1821 mdt_thread_info_fini(info);
1825 static int mdt_raw_lookup(struct mdt_thread_info *info,
1826 struct mdt_object *parent,
1827 const struct lu_name *lname,
1828 struct ldlm_reply *ldlm_rep)
1830 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1834 LASSERT(!info->mti_cross_ref);
1836 /* Only got the fid of this obj by name */
1837 fid_zero(child_fid);
1838 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1839 lname, child_fid, &info->mti_spec);
1841 struct mdt_body *repbody;
1843 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1844 repbody->mbo_fid1 = *child_fid;
1845 repbody->mbo_valid = OBD_MD_FLID;
1846 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1847 } else if (rc == -ENOENT) {
1848 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1855 * UPDATE lock should be taken against parent, and be released before exit;
1856 * child_bits lock should be taken against child, and be returned back:
1857 * (1)normal request should release the child lock;
1858 * (2)intent request will grant the lock to client.
1860 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1861 struct mdt_lock_handle *lhc,
1863 struct ldlm_reply *ldlm_rep)
1865 struct ptlrpc_request *req = mdt_info_req(info);
1866 struct mdt_body *reqbody = NULL;
1867 struct mdt_object *parent = info->mti_object;
1868 struct mdt_object *child = NULL;
1869 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1870 struct lu_name *lname = NULL;
1871 struct mdt_lock_handle *lhp = NULL;
1872 struct ldlm_lock *lock;
1873 struct req_capsule *pill = info->mti_pill;
1881 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1882 LASSERT(ergo(is_resent,
1883 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1888 if (info->mti_cross_ref) {
1889 /* Only getattr on the child. Parent is on another node. */
1890 mdt_set_disposition(info, ldlm_rep,
1891 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1893 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1895 PFID(mdt_object_fid(child)), ldlm_rep);
1897 rc = mdt_check_resent_lock(info, child, lhc);
1900 } else if (rc > 0) {
1901 mdt_lock_handle_init(lhc);
1902 mdt_lock_reg_init(lhc, LCK_PR);
1905 * Object's name entry is on another MDS, it will
1906 * request PERM lock only because LOOKUP lock is owned
1907 * by the MDS where name entry resides.
1909 * TODO: it should try layout lock too. - Jinshan
1911 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1912 MDS_INODELOCK_LAYOUT);
1913 child_bits |= MDS_INODELOCK_PERM;
1915 rc = mdt_object_lock(info, child, lhc, child_bits);
1920 /* Finally, we can get attr for child. */
1921 if (!mdt_object_exists(child)) {
1922 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1924 "remote object doesn't exist.");
1925 mdt_object_unlock(info, child, lhc, 1);
1929 rc = mdt_getattr_internal(info, child, 0);
1930 if (unlikely(rc != 0)) {
1931 mdt_object_unlock(info, child, lhc, 1);
1935 rc = mdt_pack_secctx_in_reply(info, child);
1937 mdt_object_unlock(info, child, lhc, 1);
1941 rc = mdt_pack_encctx_in_reply(info, child);
1943 mdt_object_unlock(info, child, lhc, 1);
1947 lname = &info->mti_name;
1948 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
1950 if (lu_name_is_valid(lname)) {
1951 if (mdt_object_remote(parent)) {
1952 CERROR("%s: parent "DFID" is on remote target\n",
1953 mdt_obd_name(info->mti_mdt),
1954 PFID(mdt_object_fid(parent)));
1958 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1959 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1960 PNAME(lname), ldlm_rep);
1962 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1963 if (unlikely(reqbody == NULL))
1964 RETURN(err_serious(-EPROTO));
1966 *child_fid = reqbody->mbo_fid2;
1967 if (unlikely(!fid_is_sane(child_fid)))
1968 RETURN(err_serious(-EINVAL));
1970 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1971 mdt_object_get(info->mti_env, parent);
1974 child = mdt_object_find(info->mti_env, info->mti_mdt,
1977 RETURN(PTR_ERR(child));
1980 if (mdt_object_remote(child)) {
1981 CERROR("%s: child "DFID" is on remote target\n",
1982 mdt_obd_name(info->mti_mdt),
1983 PFID(mdt_object_fid(child)));
1984 GOTO(out_child, rc = -EPROTO);
1987 /* don't fetch LOOKUP lock if it's remote object */
1988 rc = mdt_is_remote_object(info, parent, child);
1990 GOTO(out_child, rc);
1992 child_bits &= ~MDS_INODELOCK_LOOKUP;
1994 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1996 PFID(mdt_object_fid(parent)),
1997 PFID(&reqbody->mbo_fid2), ldlm_rep);
2000 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
2002 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
2003 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2005 "Parent doesn't exist!");
2006 GOTO(out_child, rc = -ESTALE);
2009 if (lu_name_is_valid(lname)) {
2010 /* Always allow to lookup ".." */
2011 if (unlikely(lname->ln_namelen == 2 &&
2012 lname->ln_name[0] == '.' &&
2013 lname->ln_name[1] == '.'))
2014 info->mti_spec.sp_permitted = 1;
2016 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
2017 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
2022 /* step 1: lock parent only if parent is a directory */
2023 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
2024 lhp = &info->mti_lh[MDT_LH_PARENT];
2025 mdt_lock_pdo_init(lhp, LCK_PR, lname);
2026 rc = mdt_object_lock(info, parent, lhp,
2027 MDS_INODELOCK_UPDATE);
2028 if (unlikely(rc != 0))
2032 /* step 2: lookup child's fid by name */
2033 fid_zero(child_fid);
2034 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
2035 child_fid, &info->mti_spec);
2037 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2040 GOTO(unlock_parent, rc);
2042 child = mdt_object_find(info->mti_env, info->mti_mdt,
2044 if (unlikely(IS_ERR(child)))
2045 GOTO(unlock_parent, rc = PTR_ERR(child));
2048 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2050 /* step 3: lock child regardless if it is local or remote. */
2053 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
2054 if (!mdt_object_exists(child)) {
2055 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2057 "Object doesn't exist!");
2058 GOTO(out_child, rc = -ENOENT);
2061 rc = mdt_check_resent_lock(info, child, lhc);
2063 GOTO(out_child, rc);
2064 } else if (rc > 0) {
2065 mdt_lock_handle_init(lhc);
2066 mdt_lock_reg_init(lhc, LCK_PR);
2068 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
2069 !mdt_object_remote(child)) {
2070 struct md_attr *ma = &info->mti_attr;
2073 ma->ma_need = MA_INODE;
2074 rc = mdt_attr_get_complex(info, child, ma);
2075 if (unlikely(rc != 0))
2076 GOTO(out_child, rc);
2078 /* If the file has not been changed for some time, we
2079 * return not only a LOOKUP lock, but also an UPDATE
2080 * lock and this might save us RPC on later STAT. For
2081 * directories, it also let negative dentry cache start
2082 * working for this dir. */
2083 if (ma->ma_valid & MA_INODE &&
2084 ma->ma_attr.la_valid & LA_CTIME &&
2085 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
2086 ma->ma_attr.la_ctime < ktime_get_real_seconds())
2087 child_bits |= MDS_INODELOCK_UPDATE;
2090 /* layout lock must be granted in a best-effort way
2091 * for IT operations */
2092 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
2093 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2094 !mdt_object_remote(child) && ldlm_rep != NULL) {
2095 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
2096 exp_connect_layout(info->mti_exp)) {
2097 /* try to grant layout lock for regular file. */
2098 try_bits = MDS_INODELOCK_LAYOUT;
2100 /* Acquire DOM lock in advance for data-on-mdt file */
2101 if (child != parent)
2102 try_bits |= MDS_INODELOCK_DOM;
2105 if (try_bits != 0) {
2106 /* try layout lock, it may fail to be granted due to
2107 * contention at LOOKUP or UPDATE */
2108 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
2110 if (child_bits & MDS_INODELOCK_LAYOUT)
2113 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
2114 * client will enqueue the lock to the remote MDT */
2115 if (mdt_object_remote(child))
2116 child_bits &= ~MDS_INODELOCK_UPDATE;
2117 rc = mdt_object_lock(info, child, lhc, child_bits);
2119 if (unlikely(rc != 0))
2120 GOTO(out_child, rc);
2123 /* finally, we can get attr for child. */
2124 rc = mdt_getattr_internal(info, child, ma_need);
2125 if (unlikely(rc != 0)) {
2126 mdt_object_unlock(info, child, lhc, 1);
2127 GOTO(out_child, rc);
2130 rc = mdt_pack_secctx_in_reply(info, child);
2132 mdt_object_unlock(info, child, lhc, 1);
2133 GOTO(out_child, rc);
2136 rc = mdt_pack_encctx_in_reply(info, child);
2138 mdt_object_unlock(info, child, lhc, 1);
2139 GOTO(out_child, rc);
2142 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2144 /* Debugging code. */
2145 LDLM_DEBUG(lock, "Returning lock to client");
2146 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
2147 &lock->l_resource->lr_name),
2148 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
2149 PLDLMRES(lock->l_resource),
2150 PFID(mdt_object_fid(child)));
2152 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2153 !mdt_object_remote(child) && child != parent) {
2154 mdt_object_put(info->mti_env, child);
2155 rc = mdt_pack_size2body(info, child_fid,
2157 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
2158 /* DOM lock was taken in advance but this is
2159 * not DoM file. Drop the lock.
2161 lock_res_and_lock(lock);
2162 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
2163 unlock_res_and_lock(lock);
2165 LDLM_LOCK_PUT(lock);
2166 GOTO(unlock_parent, rc = 0);
2168 LDLM_LOCK_PUT(lock);
2174 mdt_object_put(info->mti_env, child);
2177 mdt_object_unlock(info, parent, lhp, 1);
2181 /* normal handler: should release the child lock */
2182 static int mdt_getattr_name(struct tgt_session_info *tsi)
2184 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2185 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
2186 struct mdt_body *reqbody;
2187 struct mdt_body *repbody;
2192 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2193 LASSERT(reqbody != NULL);
2194 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2195 LASSERT(repbody != NULL);
2197 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
2198 repbody->mbo_eadatasize = 0;
2199 repbody->mbo_aclsize = 0;
2201 rc = mdt_init_ucred(info, reqbody);
2203 GOTO(out_shrink, rc);
2205 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
2206 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2207 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
2208 lhc->mlh_reg_lh.cookie = 0;
2210 mdt_exit_ucred(info);
2213 mdt_client_compatibility(info);
2214 rc2 = mdt_fix_reply(info);
2217 mdt_thread_info_fini(info);
2221 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
2222 const struct lu_fid *pfid,
2223 const struct lu_name *name,
2224 struct mdt_object *obj, s64 ctime)
2226 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2227 struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
2228 struct mdt_device *mdt = info->mti_mdt;
2229 struct md_attr *ma = &info->mti_attr;
2230 struct mdt_lock_handle *parent_lh;
2231 struct mdt_lock_handle *child_lh;
2232 struct mdt_object *pobj;
2233 bool cos_incompat = false;
2237 pobj = mdt_object_find(info->mti_env, mdt, pfid);
2239 GOTO(out, rc = PTR_ERR(pobj));
2241 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2242 mdt_lock_pdo_init(parent_lh, LCK_PW, name);
2243 rc = mdt_object_lock(info, pobj, parent_lh, MDS_INODELOCK_UPDATE);
2245 GOTO(put_parent, rc);
2247 if (mdt_object_remote(pobj))
2248 cos_incompat = true;
2250 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2251 name, child_fid, &info->mti_spec);
2253 GOTO(unlock_parent, rc);
2255 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2256 GOTO(unlock_parent, rc = -EREMCHG);
2258 child_lh = &info->mti_lh[MDT_LH_CHILD];
2259 mdt_lock_reg_init(child_lh, LCK_EX);
2260 rc = mdt_reint_striped_lock(info, obj, child_lh,
2261 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE,
2262 einfo, cos_incompat);
2264 GOTO(unlock_parent, rc);
2266 if (atomic_read(&obj->mot_open_count)) {
2267 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2268 PFID(mdt_object_fid(obj)));
2269 GOTO(unlock_child, rc = -EBUSY);
2273 ma->ma_valid = MA_INODE;
2274 ma->ma_attr.la_valid = LA_CTIME;
2275 ma->ma_attr.la_ctime = ctime;
2277 mutex_lock(&obj->mot_lov_mutex);
2279 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2280 mdt_object_child(obj), name, ma, 0);
2282 mutex_unlock(&obj->mot_lov_mutex);
2285 mdt_reint_striped_unlock(info, obj, child_lh, einfo, 1);
2287 mdt_object_unlock(info, pobj, parent_lh, 1);
2289 mdt_object_put(info->mti_env, pobj);
2294 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2295 struct mdt_object *obj)
2297 struct lu_ucred *uc = lu_ucred(info->mti_env);
2298 struct md_attr *ma = &info->mti_attr;
2299 struct lu_attr *la = &ma->ma_attr;
2303 ma->ma_need = MA_INODE;
2304 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2308 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2311 if (md_capable(uc, CAP_DAC_OVERRIDE))
2313 if (uc->uc_fsuid == la->la_uid) {
2314 if ((la->la_mode & S_IWUSR) == 0)
2316 } else if (uc->uc_fsgid == la->la_gid) {
2317 if ((la->la_mode & S_IWGRP) == 0)
2319 } else if ((la->la_mode & S_IWOTH) == 0) {
2327 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2330 struct mdt_device *mdt = info->mti_mdt;
2331 struct mdt_object *obj = NULL;
2332 struct linkea_data ldata = { NULL };
2333 struct lu_buf *buf = &info->mti_big_buf;
2334 struct lu_name *name = &info->mti_name;
2335 struct lu_fid *pfid = &info->mti_tmp_fid1;
2336 struct link_ea_header *leh;
2337 struct link_ea_entry *lee;
2338 int reclen, count, rc = 0;
2341 if (!fid_is_sane(fid))
2342 GOTO(out, rc = -EINVAL);
2344 if (!fid_is_namespace_visible(fid))
2345 GOTO(out, rc = -EINVAL);
2347 obj = mdt_object_find(info->mti_env, mdt, fid);
2349 GOTO(out, rc = PTR_ERR(obj));
2351 if (mdt_object_remote(obj))
2352 GOTO(out, rc = -EREMOTE);
2353 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2354 GOTO(out, rc = -ENOENT);
2356 rc = mdt_rmfid_check_permission(info, obj);
2361 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2363 GOTO(out, rc = -ENOMEM);
2366 rc = mdt_links_read(info, obj, &ldata);
2371 lee = (struct link_ea_entry *)(leh + 1);
2372 for (count = 0; count < leh->leh_reccount; count++) {
2373 /* remove every hardlink */
2374 linkea_entry_unpack(lee, &reclen, name, pfid);
2375 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2376 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2382 if (obj && !IS_ERR(obj))
2383 mdt_object_put(info->mti_env, obj);
2384 if (info->mti_big_buf.lb_buf)
2385 lu_buf_free(&info->mti_big_buf);
2390 static int mdt_rmfid(struct tgt_session_info *tsi)
2392 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2393 struct mdt_body *reqbody;
2394 struct lu_fid *fids, *rfids;
2400 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2401 if (reqbody == NULL)
2403 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2405 nr = bufsize / sizeof(struct lu_fid);
2406 if (nr * sizeof(struct lu_fid) != bufsize)
2408 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2409 RCL_SERVER, nr * sizeof(__u32));
2410 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2411 RCL_SERVER, nr * sizeof(struct lu_fid));
2412 rc = req_capsule_server_pack(tsi->tsi_pill);
2414 GOTO(out, rc = err_serious(rc));
2415 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2418 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2420 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2423 mdt_init_ucred(mti, reqbody);
2424 for (i = 0; i < nr; i++) {
2426 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2428 mdt_exit_ucred(mti);
2434 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2435 void *karg, void __user *uarg);
2437 static int mdt_set_info(struct tgt_session_info *tsi)
2439 struct ptlrpc_request *req = tgt_ses_req(tsi);
2442 int keylen, vallen, rc = 0;
2446 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2448 DEBUG_REQ(D_HA, req, "no set_info key");
2449 RETURN(err_serious(-EFAULT));
2452 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2455 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2457 DEBUG_REQ(D_HA, req, "no set_info val");
2458 RETURN(err_serious(-EFAULT));
2461 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2464 /* Swab any part of val you need to here */
2465 if (KEY_IS(KEY_READ_ONLY)) {
2466 spin_lock(&req->rq_export->exp_lock);
2468 *exp_connect_flags_ptr(req->rq_export) |=
2471 *exp_connect_flags_ptr(req->rq_export) &=
2472 ~OBD_CONNECT_RDONLY;
2473 spin_unlock(&req->rq_export->exp_lock);
2474 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2475 struct changelog_setinfo *cs = val;
2477 if (vallen != sizeof(*cs)) {
2478 CERROR("%s: bad changelog_clear setinfo size %d\n",
2479 tgt_name(tsi->tsi_tgt), vallen);
2482 if (ptlrpc_req_need_swab(req)) {
2483 __swab64s(&cs->cs_recno);
2484 __swab32s(&cs->cs_id);
2487 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
2489 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2491 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2493 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2500 static int mdt_readpage(struct tgt_session_info *tsi)
2502 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2503 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2504 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2505 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2506 struct mdt_body *repbody;
2512 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2513 RETURN(err_serious(-ENOMEM));
2515 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2516 if (repbody == NULL || reqbody == NULL)
2517 RETURN(err_serious(-EFAULT));
2520 * prepare @rdpg before calling lower layers and transfer itself. Here
2521 * reqbody->size contains offset of where to start to read and
2522 * reqbody->nlink contains number bytes to read.
2524 rdpg->rp_hash = reqbody->mbo_size;
2525 if (rdpg->rp_hash != reqbody->mbo_size) {
2526 CERROR("Invalid hash: %#llx != %#llx\n",
2527 rdpg->rp_hash, reqbody->mbo_size);
2531 rdpg->rp_attrs = reqbody->mbo_mode;
2532 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2533 rdpg->rp_attrs |= LUDA_64BITHASH;
2534 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2535 exp_max_brw_size(tsi->tsi_exp));
2536 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2538 OBD_ALLOC_PTR_ARRAY(rdpg->rp_pages, rdpg->rp_npages);
2539 if (rdpg->rp_pages == NULL)
2542 for (i = 0; i < rdpg->rp_npages; ++i) {
2543 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2544 if (rdpg->rp_pages[i] == NULL)
2545 GOTO(free_rdpg, rc = -ENOMEM);
2548 /* call lower layers to fill allocated pages with directory data */
2549 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2551 GOTO(free_rdpg, rc);
2553 /* send pages to client */
2554 rc = tgt_sendpage(tsi, rdpg, rc);
2559 for (i = 0; i < rdpg->rp_npages; i++)
2560 if (rdpg->rp_pages[i] != NULL)
2561 __free_page(rdpg->rp_pages[i]);
2562 OBD_FREE_PTR_ARRAY(rdpg->rp_pages, rdpg->rp_npages);
2564 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2570 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2572 struct lu_ucred *uc = mdt_ucred_check(info);
2573 struct lu_attr *attr = &info->mti_attr.ma_attr;
2578 if (op != REINT_SETATTR) {
2579 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2580 attr->la_uid = uc->uc_fsuid;
2581 /* for S_ISGID, inherit gid from his parent, such work will be
2582 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2583 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2584 attr->la_gid = uc->uc_fsgid;
2590 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2592 return op == REINT_OPEN &&
2593 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2596 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2598 struct req_capsule *pill = info->mti_pill;
2600 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2602 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2604 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2606 /* pre-set size in server part with max size */
2607 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2609 OBD_MAX_DEFAULT_EA_SIZE);
2611 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2616 static void mdt_preset_encctx_size(struct mdt_thread_info *info)
2618 struct req_capsule *pill = info->mti_pill;
2620 if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX,
2622 /* pre-set size in server part with max size */
2623 req_capsule_set_size(pill, &RMF_FILE_ENCCTX,
2625 info->mti_mdt->mdt_max_mdsize);
2628 static int mdt_reint_internal(struct mdt_thread_info *info,
2629 struct mdt_lock_handle *lhc,
2632 struct req_capsule *pill = info->mti_pill;
2633 struct mdt_body *repbody;
2638 rc = mdt_reint_unpack(info, op);
2640 CERROR("Can't unpack reint, rc %d\n", rc);
2641 RETURN(err_serious(rc));
2645 /* check if the file system is set to readonly. O_RDONLY open
2646 * is still allowed even the file system is set to readonly mode */
2647 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2648 RETURN(err_serious(-EROFS));
2650 /* for replay (no_create) lmm is not needed, client has it already */
2651 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2652 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2655 /* llog cookies are always 0, the field is kept for compatibility */
2656 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2657 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2659 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2660 * by default. If the target object has more ACL entries, then
2661 * enlarge the buffer when necessary. */
2662 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2663 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2664 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2666 mdt_preset_secctx_size(info);
2667 mdt_preset_encctx_size(info);
2669 rc = req_capsule_server_pack(pill);
2671 CERROR("Can't pack response, rc %d\n", rc);
2672 RETURN(err_serious(rc));
2675 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2676 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2678 repbody->mbo_eadatasize = 0;
2679 repbody->mbo_aclsize = 0;
2682 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2684 /* for replay no cookkie / lmm need, because client have this already */
2685 if (info->mti_spec.no_create)
2686 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2687 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2689 rc = mdt_init_ucred_reint(info);
2691 GOTO(out_shrink, rc);
2693 rc = mdt_fix_attr_ucred(info, op);
2695 GOTO(out_ucred, rc = err_serious(rc));
2697 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2699 GOTO(out_ucred, rc);
2700 } else if (rc == 1) {
2701 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt");
2702 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2703 GOTO(out_ucred, rc);
2705 rc = mdt_reint_rec(info, lhc);
2708 mdt_exit_ucred(info);
2710 mdt_client_compatibility(info);
2712 rc2 = mdt_fix_reply(info);
2717 * Data-on-MDT optimization - read data along with OPEN and return it
2718 * in reply when possible.
2720 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req))
2721 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2727 static long mdt_reint_opcode(struct ptlrpc_request *req,
2728 const struct req_format **fmt)
2730 struct mdt_device *mdt;
2731 struct mdt_rec_reint *rec;
2734 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2736 opc = rec->rr_opcode;
2737 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2738 if (opc < REINT_MAX && fmt[opc] != NULL)
2739 req_capsule_extend(&req->rq_pill, fmt[opc]);
2741 mdt = mdt_exp2dev(req->rq_export);
2742 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2743 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2744 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2745 opc = err_serious(-EFAULT);
2748 opc = err_serious(-EFAULT);
2753 static int mdt_reint(struct tgt_session_info *tsi)
2757 static const struct req_format *reint_fmts[REINT_MAX] = {
2758 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2759 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2760 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2761 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2762 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2763 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2764 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2765 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2766 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
2767 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2772 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2774 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2776 * No lock possible here from client to pass it to reint code
2779 rc = mdt_reint_internal(info, NULL, opc);
2780 mdt_thread_info_fini(info);
2785 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2789 /* this should sync the whole device */
2790 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2792 struct dt_device *dt = mdt->mdt_bottom;
2796 rc = dt->dd_ops->dt_sync(env, dt);
2800 /* this should sync this object */
2801 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2802 struct mdt_object *mo)
2808 if (!mdt_object_exists(mo)) {
2809 CWARN("%s: non existing object "DFID": rc = %d\n",
2810 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2815 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
2816 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
2817 dt_obj_version_t version;
2819 version = dt_version_get(env, mdt_obj2dt(mo));
2820 if (version > tgt->lut_obd->obd_last_committed)
2821 rc = mo_object_sync(env, mdt_object_child(mo));
2823 rc = mo_object_sync(env, mdt_object_child(mo));
2829 static int mdt_sync(struct tgt_session_info *tsi)
2831 struct ptlrpc_request *req = tgt_ses_req(tsi);
2832 struct req_capsule *pill = tsi->tsi_pill;
2833 struct mdt_body *body;
2834 ktime_t kstart = ktime_get();
2839 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2840 RETURN(err_serious(-ENOMEM));
2842 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2843 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2845 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2847 if (unlikely(info->mti_object == NULL))
2850 /* sync an object */
2851 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2854 const struct lu_fid *fid;
2855 struct lu_attr *la = &info->mti_attr.ma_attr;
2857 info->mti_attr.ma_need = MA_INODE;
2858 info->mti_attr.ma_valid = 0;
2859 rc = mdt_attr_get_complex(info, info->mti_object,
2862 body = req_capsule_server_get(pill,
2864 fid = mdt_object_fid(info->mti_object);
2865 mdt_pack_attr2body(info, body, la, fid);
2868 mdt_thread_info_fini(info);
2871 mdt_counter_incr(req, LPROC_MDT_SYNC,
2872 ktime_us_delta(ktime_get(), kstart));
2877 static int mdt_data_sync(struct tgt_session_info *tsi)
2879 struct mdt_thread_info *info;
2880 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2881 struct ost_body *body = tsi->tsi_ost_body;
2882 struct ost_body *repbody;
2883 struct mdt_object *mo = NULL;
2889 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2891 /* if no fid is specified then do nothing,
2892 * device sync is done via MDS_SYNC */
2893 if (fid_is_zero(&tsi->tsi_fid))
2896 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2898 RETURN(PTR_ERR(mo));
2900 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2904 repbody->oa.o_oi = body->oa.o_oi;
2905 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2907 info = tsi2mdt_info(tsi);
2908 ma = &info->mti_attr;
2909 ma->ma_need = MA_INODE;
2911 rc = mdt_attr_get_complex(info, mo, ma);
2913 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2916 mdt_thread_info_fini(info);
2921 mdt_object_put(tsi->tsi_env, mo);
2926 * Handle quota control requests to consult current usage/limit, but also
2927 * to configure quota enforcement
2929 static int mdt_quotactl(struct tgt_session_info *tsi)
2931 struct obd_export *exp = tsi->tsi_exp;
2932 struct req_capsule *pill = tsi->tsi_pill;
2933 struct obd_quotactl *oqctl, *repoqc;
2935 struct mdt_device *mdt = mdt_exp2dev(exp);
2936 struct lu_device *qmt = mdt->mdt_qmt_dev;
2937 struct lu_nodemap *nodemap;
2940 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2942 RETURN(err_serious(-EPROTO));
2944 rc = req_capsule_server_pack(pill);
2946 RETURN(err_serious(rc));
2948 nodemap = nodemap_get_from_exp(exp);
2949 if (IS_ERR(nodemap))
2950 RETURN(PTR_ERR(nodemap));
2952 switch (oqctl->qc_cmd) {
2953 /* master quotactl */
2956 case LUSTRE_Q_SETDEFAULT:
2957 case LUSTRE_Q_SETQUOTAPOOL:
2958 case LUSTRE_Q_SETINFOPOOL:
2959 if (!nodemap_can_setquota(nodemap))
2960 GOTO(out_nodemap, rc = -EPERM);
2964 case LUSTRE_Q_GETDEFAULT:
2965 case LUSTRE_Q_GETQUOTAPOOL:
2966 case LUSTRE_Q_GETINFOPOOL:
2968 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2969 /* slave quotactl */
2976 CERROR("%s: unsupported quotactl command %d: rc = %d\n",
2977 mdt_obd_name(mdt), oqctl->qc_cmd, rc);
2978 GOTO(out_nodemap, rc);
2982 switch (oqctl->qc_type) {
2984 id = nodemap_map_id(nodemap, NODEMAP_UID,
2985 NODEMAP_CLIENT_TO_FS, id);
2988 id = nodemap_map_id(nodemap, NODEMAP_GID,
2989 NODEMAP_CLIENT_TO_FS, id);
2992 /* todo: check/map project id */
2996 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2998 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
3000 GOTO(out_nodemap, rc = err_serious(-EFAULT));
3002 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
3003 barrier_exit(tsi->tsi_tgt->lut_bottom);
3005 if (oqctl->qc_id != id)
3006 swap(oqctl->qc_id, id);
3008 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
3009 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
3010 RETURN(-EINPROGRESS);
3013 switch (oqctl->qc_cmd) {
3019 case LUSTRE_Q_SETDEFAULT:
3020 case LUSTRE_Q_GETDEFAULT:
3021 case LUSTRE_Q_SETQUOTAPOOL:
3022 case LUSTRE_Q_GETQUOTAPOOL:
3023 case LUSTRE_Q_SETINFOPOOL:
3024 case LUSTRE_Q_GETINFOPOOL:
3025 /* forward quotactl request to QMT */
3026 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
3031 /* slave quotactl */
3032 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
3037 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
3038 GOTO(out_nodemap, rc = -EFAULT);
3041 if (oqctl->qc_id != id)
3042 swap(oqctl->qc_id, id);
3044 QCTL_COPY(repoqc, oqctl);
3048 nodemap_putref(nodemap);
3053 /** clone llog ctxt from child (mdd)
3054 * This allows remote llog (replicator) access.
3055 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
3056 * context was originally set up, or we can handle them directly.
3057 * I choose the latter, but that means I need any llog
3058 * contexts set up by child to be accessable by the mdt. So we clone the
3059 * context into our context list here.
3061 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
3064 struct md_device *next = mdt->mdt_child;
3065 struct llog_ctxt *ctxt;
3068 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
3071 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
3072 if (rc || ctxt == NULL) {
3076 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
3078 CERROR("Can't set mdt ctxt %d\n", rc);
3083 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
3084 struct mdt_device *mdt, int idx)
3086 struct llog_ctxt *ctxt;
3088 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
3091 /* Put once for the get we just did, and once for the clone */
3092 llog_ctxt_put(ctxt);
3093 llog_ctxt_put(ctxt);
3098 * sec context handlers
3100 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
3102 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
3108 * quota request handlers
3110 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
3112 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3113 struct lu_device *qmt = mdt->mdt_qmt_dev;
3118 RETURN(err_serious(-EOPNOTSUPP));
3120 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
3124 struct mdt_object *mdt_object_new(const struct lu_env *env,
3125 struct mdt_device *d,
3126 const struct lu_fid *f)
3128 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
3129 struct lu_object *o;
3130 struct mdt_object *m;
3133 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
3134 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
3135 if (unlikely(IS_ERR(o)))
3136 m = (struct mdt_object *)o;
3142 struct mdt_object *mdt_object_find(const struct lu_env *env,
3143 struct mdt_device *d,
3144 const struct lu_fid *f)
3146 struct lu_object *o;
3147 struct mdt_object *m;
3150 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
3151 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
3152 if (unlikely(IS_ERR(o)))
3153 m = (struct mdt_object *)o;
3161 * Asyncronous commit for mdt device.
3163 * Pass asynchonous commit call down the MDS stack.
3165 * \param env environment
3166 * \param mdt the mdt device
3168 static void mdt_device_commit_async(const struct lu_env *env,
3169 struct mdt_device *mdt)
3171 struct dt_device *dt = mdt->mdt_bottom;
3175 rc = dt->dd_ops->dt_commit_async(env, dt);
3176 if (unlikely(rc != 0))
3177 CWARN("%s: async commit start failed: rc = %d\n",
3178 mdt_obd_name(mdt), rc);
3179 atomic_inc(&mdt->mdt_async_commit_count);
3184 * Mark the lock as "synchonous".
3186 * Mark the lock to deffer transaction commit to the unlock time.
3188 * \param lock the lock to mark as "synchonous"
3190 * \see mdt_is_lock_sync
3191 * \see mdt_save_lock
3193 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
3195 lock->l_ast_data = (void*)1;
3199 * Check whehter the lock "synchonous" or not.
3201 * \param lock the lock to check
3202 * \retval 1 the lock is "synchonous"
3203 * \retval 0 the lock isn't "synchronous"
3205 * \see mdt_set_lock_sync
3206 * \see mdt_save_lock
3208 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
3210 return lock->l_ast_data != NULL;
3214 * Blocking AST for mdt locks.
3216 * Starts transaction commit if in case of COS lock conflict or
3217 * deffers such a commit to the mdt_save_lock.
3219 * \param lock the lock which blocks a request or cancelling lock
3220 * \param desc unused
3221 * \param data unused
3222 * \param flag indicates whether this cancelling or blocking callback
3224 * \see ldlm_blocking_ast_nocheck
3226 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3227 void *data, int flag)
3229 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3230 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
3231 struct ldlm_cb_set_arg *arg = data;
3232 bool commit_async = false;
3236 if (flag == LDLM_CB_CANCELING)
3239 lock_res_and_lock(lock);
3240 if (lock->l_blocking_ast != mdt_blocking_ast) {
3241 unlock_res_and_lock(lock);
3245 /* A blocking ast may be sent from ldlm_lock_decref_internal
3246 * when the last reference to a local lock was released and
3247 * during blocking event from ldlm_work_bl_ast_lock().
3248 * The 'data' parameter is l_ast_data in the first case and
3249 * callback arguments in the second one. Distinguish them by that.
3251 if (!data || data == lock->l_ast_data || !arg->bl_desc)
3252 goto skip_cos_checks;
3254 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
3255 if (mdt_cos_is_enabled(mdt)) {
3256 if (!arg->bl_desc->bl_same_client)
3257 mdt_set_lock_sync(lock);
3258 } else if (mdt_slc_is_enabled(mdt) &&
3259 arg->bl_desc->bl_cos_incompat) {
3260 mdt_set_lock_sync(lock);
3262 * we may do extra commit here, but there is a small
3263 * window to miss a commit: lock was unlocked (saved),
3264 * then a conflict lock queued and we come here, but
3265 * REP-ACK not received, so lock was not converted to
3267 * Fortunately this window is quite small, so the
3268 * extra commit should be rare (not to say distributed
3269 * operation is rare too).
3271 commit_async = true;
3273 } else if (lock->l_req_mode == LCK_COS) {
3274 commit_async = true;
3278 rc = ldlm_blocking_ast_nocheck(lock);
3283 rc = lu_env_init(&env, LCT_LOCAL);
3284 if (unlikely(rc != 0))
3285 CWARN("%s: lu_env initialization failed, cannot "
3286 "start asynchronous commit: rc = %d\n",
3289 mdt_device_commit_async(&env, mdt);
3296 * Blocking AST for cross-MDT lock
3298 * Discard lock from uncommitted_slc_locks and cancel it.
3300 * \param lock the lock which blocks a request or cancelling lock
3301 * \param desc unused
3302 * \param data unused
3303 * \param flag indicates whether this cancelling or blocking callback
3304 * \retval 0 on success
3305 * \retval negative number on error
3307 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3308 void *data, int flag)
3314 case LDLM_CB_BLOCKING: {
3315 struct lustre_handle lockh;
3317 ldlm_lock2handle(lock, &lockh);
3318 rc = ldlm_cli_cancel(&lockh,
3319 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3321 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3326 case LDLM_CB_CANCELING: {
3327 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3328 struct mdt_device *mdt =
3329 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3331 LDLM_DEBUG(lock, "Revoke remote lock\n");
3333 /* discard slc lock here so that it can be cleaned anytime,
3334 * especially for cleanup_resource() */
3335 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3337 /* once we cache lock, l_ast_data is set to mdt_object */
3338 if (lock->l_ast_data != NULL) {
3339 struct mdt_object *mo = lock->l_ast_data;
3342 rc = lu_env_init(&env, LCT_MD_THREAD);
3343 if (unlikely(rc != 0)) {
3344 CWARN("%s: lu_env initialization failed, object %p "DFID" is leaked!: rc = %d\n",
3346 PFID(mdt_object_fid(mo)), rc);
3350 if (lock->l_policy_data.l_inodebits.bits &
3351 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3352 rc = mo_invalidate(&env, mdt_object_child(mo));
3353 mo->mot_cache_attr = 0;
3355 mdt_object_put(&env, mo);
3367 int mdt_check_resent_lock(struct mdt_thread_info *info,
3368 struct mdt_object *mo,
3369 struct mdt_lock_handle *lhc)
3371 /* the lock might already be gotten in ldlm_handle_enqueue() */
3372 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3373 struct ptlrpc_request *req = mdt_info_req(info);
3374 struct ldlm_lock *lock;
3376 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3377 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3379 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3380 * a resend case, however, it could be already destroyed
3381 * due to client eviction or a raced cancel RPC. */
3382 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3383 lhc->mlh_reg_lh.cookie);
3387 if (!fid_res_name_eq(mdt_object_fid(mo),
3388 &lock->l_resource->lr_name)) {
3389 CWARN("%s: Although resent, but still not "
3390 "get child lock:"DFID"\n",
3391 info->mti_exp->exp_obd->obd_name,
3392 PFID(mdt_object_fid(mo)));
3393 LDLM_LOCK_PUT(lock);
3396 LDLM_LOCK_PUT(lock);
3402 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3404 mdt_object_get(NULL, lock->l_ast_data);
3407 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3408 struct mdt_object *o, const struct lu_fid *fid,
3409 struct lustre_handle *lh, enum ldlm_mode mode,
3410 __u64 *ibits, __u64 trybits, bool cache)
3412 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3413 union ldlm_policy_data *policy = &mti->mti_policy;
3414 struct ldlm_res_id *res_id = &mti->mti_res_id;
3418 LASSERT(mdt_object_remote(o));
3420 fid_build_reg_res_name(fid, res_id);
3422 memset(einfo, 0, sizeof(*einfo));
3423 einfo->ei_type = LDLM_IBITS;
3424 einfo->ei_mode = mode;
3425 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3426 einfo->ei_cb_cp = ldlm_completion_ast;
3427 einfo->ei_enq_slave = 0;
3428 einfo->ei_res_id = res_id;
3432 * if we cache lock, couple lock with mdt_object, so that object
3433 * can be easily found in lock ASTs.
3435 einfo->ei_cbdata = o;
3436 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3439 memset(policy, 0, sizeof(*policy));
3440 policy->l_inodebits.bits = *ibits;
3441 policy->l_inodebits.try_bits = trybits;
3443 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
3446 /* Return successfully acquired bits to a caller */
3448 struct ldlm_lock *lock = ldlm_handle2lock(lh);
3451 *ibits = lock->l_policy_data.l_inodebits.bits;
3452 LDLM_LOCK_PUT(lock);
3457 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
3458 const struct lu_fid *fid, struct lustre_handle *lh,
3459 enum ldlm_mode mode, __u64 ibits, bool cache)
3461 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
3465 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
3466 struct mdt_lock_handle *lh, __u64 *ibits,
3467 __u64 trybits, bool cos_incompat)
3469 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3470 union ldlm_policy_data *policy = &info->mti_policy;
3471 struct ldlm_res_id *res_id = &info->mti_res_id;
3472 __u64 dlmflags = 0, *cookie = NULL;
3476 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3477 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3478 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3479 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3482 LASSERT(lh->mlh_reg_mode == LCK_PW ||
3483 lh->mlh_reg_mode == LCK_EX);
3484 dlmflags |= LDLM_FL_COS_INCOMPAT;
3485 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
3486 dlmflags |= LDLM_FL_COS_ENABLED;
3489 /* Only enqueue LOOKUP lock for remote object */
3490 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
3492 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3493 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
3494 *ibits == MDS_INODELOCK_OPEN)
3495 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3497 if (lh->mlh_type == MDT_PDO_LOCK) {
3498 /* check for exists after object is locked */
3499 if (mdt_object_exists(o) == 0) {
3500 /* Non-existent object shouldn't have PDO lock */
3503 /* Non-dir object shouldn't have PDO lock */
3504 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
3509 fid_build_reg_res_name(mdt_object_fid(o), res_id);
3510 dlmflags |= LDLM_FL_ATOMIC_CB;
3513 cookie = &info->mti_exp->exp_handle.h_cookie;
3516 * Take PDO lock on whole directory and build correct @res_id for lock
3517 * on part of directory.
3519 if (lh->mlh_pdo_hash != 0) {
3520 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
3521 mdt_lock_pdo_mode(info, o, lh);
3522 if (lh->mlh_pdo_mode != LCK_NL) {
3524 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3525 * is never going to be sent to client and we do not
3526 * want it slowed down due to possible cancels.
3528 policy->l_inodebits.bits =
3529 *ibits & MDS_INODELOCK_UPDATE;
3530 policy->l_inodebits.try_bits =
3531 trybits & MDS_INODELOCK_UPDATE;
3532 /* at least one of them should be set */
3533 LASSERT(policy->l_inodebits.bits |
3534 policy->l_inodebits.try_bits);
3535 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3536 lh->mlh_pdo_mode, policy, res_id,
3538 if (unlikely(rc != 0))
3539 GOTO(out_unlock, rc);
3543 * Finish res_id initializing by name hash marking part of
3544 * directory which is taking modification.
3546 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3549 policy->l_inodebits.bits = *ibits;
3550 policy->l_inodebits.try_bits = trybits;
3551 policy->l_inodebits.li_gid = lh->mlh_gid;
3554 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3555 * going to be sent to client. If it is - mdt_intent_policy() path will
3556 * fix it up and turn FL_LOCAL flag off.
3558 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3559 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3563 mdt_object_unlock(info, o, lh, 1);
3564 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3565 lh->mlh_pdo_hash != 0 &&
3566 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3567 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3569 /* Return successfully acquired bits to a caller */
3571 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3574 *ibits = lock->l_policy_data.l_inodebits.bits;
3575 LDLM_LOCK_PUT(lock);
3581 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3582 struct mdt_lock_handle *lh, __u64 *ibits,
3583 __u64 trybits, bool cos_incompat)
3585 struct mdt_lock_handle *local_lh = NULL;
3589 if (!mdt_object_remote(o)) {
3590 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3595 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3596 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3597 MDS_INODELOCK_XATTR);
3599 /* Only enqueue LOOKUP lock for remote object */
3600 if (*ibits & MDS_INODELOCK_LOOKUP) {
3601 __u64 local = MDS_INODELOCK_LOOKUP;
3603 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3611 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3612 /* Sigh, PDO needs to enqueue 2 locks right now, but
3613 * enqueue RPC can only request 1 lock, to avoid extra
3614 * RPC, so it will instead enqueue EX lock for remote
3615 * object anyway XXX*/
3616 if (lh->mlh_type == MDT_PDO_LOCK &&
3617 lh->mlh_pdo_hash != 0) {
3619 "%s: "DFID" convert PDO lock to EX lock.\n",
3620 mdt_obd_name(info->mti_mdt),
3621 PFID(mdt_object_fid(o)));
3622 lh->mlh_pdo_hash = 0;
3623 lh->mlh_rreg_mode = LCK_EX;
3624 lh->mlh_type = MDT_REG_LOCK;
3627 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3630 ibits, trybits, false);
3631 if (rc != ELDLM_OK) {
3632 if (local_lh != NULL)
3633 mdt_object_unlock(info, o, local_lh, rc);
3638 /* other components like LFSCK can use lockless access
3639 * and populate cache, so we better invalidate it */
3640 mo_invalidate(info->mti_env, mdt_object_child(o));
3645 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3646 struct mdt_lock_handle *lh, __u64 ibits)
3648 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3651 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3652 struct mdt_lock_handle *lh, __u64 ibits,
3655 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3656 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3660 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3661 struct mdt_lock_handle *lh, __u64 *ibits,
3662 __u64 trybits, bool cos_incompat)
3664 bool trylock_only = *ibits == 0;
3667 LASSERT(!(*ibits & trybits));
3668 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3670 if (rc && trylock_only) { /* clear error for try ibits lock only */
3671 LASSERT(*ibits == 0);
3678 * Save a lock within request object.
3680 * Keep the lock referenced until whether client ACK or transaction
3681 * commit happens or release the lock immediately depending on input
3682 * parameters. If COS is ON, a write lock is converted to COS lock
3685 * \param info thead info object
3686 * \param h lock handle
3687 * \param mode lock mode
3688 * \param decref force immediate lock releasing
3690 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3691 enum ldlm_mode mode, int decref)
3695 if (lustre_handle_is_used(h)) {
3696 if (decref || !info->mti_has_trans ||
3697 !(mode & (LCK_PW | LCK_EX))) {
3698 mdt_fid_unlock(h, mode);
3700 struct mdt_device *mdt = info->mti_mdt;
3701 struct ldlm_lock *lock = ldlm_handle2lock(h);
3702 struct ptlrpc_request *req = mdt_info_req(info);
3703 bool cos = mdt_cos_is_enabled(mdt);
3704 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3706 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3709 /* there is no request if mdt_object_unlock() is called
3710 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3711 if (likely(req != NULL)) {
3712 LDLM_DEBUG(lock, "save lock request %p reply "
3713 "state %p transno %lld\n", req,
3714 req->rq_reply_state, req->rq_transno);
3716 ldlm_lock_mode_downgrade(lock, LCK_COS);
3719 if (req->rq_export->exp_disconnected)
3720 mdt_fid_unlock(h, mode);
3722 ptlrpc_save_lock(req, h, mode, cos,
3725 mdt_fid_unlock(h, mode);
3727 if (mdt_is_lock_sync(lock)) {
3728 CDEBUG(D_HA, "found sync-lock,"
3729 " async commit started\n");
3730 mdt_device_commit_async(info->mti_env,
3733 LDLM_LOCK_PUT(lock);
3742 * Save cross-MDT lock in uncommitted_slc_locks
3744 * Keep the lock referenced until transaction commit happens or release the lock
3745 * immediately depending on input parameters.
3747 * \param info thead info object
3748 * \param h lock handle
3749 * \param mode lock mode
3750 * \param decref force immediate lock releasing
3752 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3753 struct mdt_object *o, struct lustre_handle *h,
3754 enum ldlm_mode mode, int decref)
3758 if (lustre_handle_is_used(h)) {
3759 struct ldlm_lock *lock = ldlm_handle2lock(h);
3760 struct ptlrpc_request *req = mdt_info_req(info);
3763 (lock->l_policy_data.l_inodebits.bits &
3764 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3765 mo_invalidate(info->mti_env, mdt_object_child(o));
3767 if (decref || !info->mti_has_trans || !req ||
3768 !(mode & (LCK_PW | LCK_EX))) {
3769 ldlm_lock_decref_and_cancel(h, mode);
3770 LDLM_LOCK_PUT(lock);
3772 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3774 ldlm_lock_decref(h, mode);
3783 * Unlock mdt object.
3785 * Immeditely release the regular lock and the PDO lock or save the
3786 * lock in request and keep them referenced until client ACK or
3787 * transaction commit.
3789 * \param info thread info object
3790 * \param o mdt object
3791 * \param lh mdt lock handle referencing regular and PDO locks
3792 * \param decref force immediate lock releasing
3794 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3796 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3797 struct mdt_lock_handle *lh, int decref)
3801 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3802 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3803 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3809 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3810 const struct lu_fid *f,
3811 struct mdt_lock_handle *lh,
3814 struct mdt_object *o;
3816 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3820 rc = mdt_object_lock(info, o, lh, ibits);
3822 mdt_object_put(info->mti_env, o);
3829 void mdt_object_unlock_put(struct mdt_thread_info * info,
3830 struct mdt_object * o,
3831 struct mdt_lock_handle *lh,
3834 mdt_object_unlock(info, o, lh, decref);
3835 mdt_object_put(info->mti_env, o);
3839 * Generic code handling requests that have struct mdt_body passed in:
3841 * - extract mdt_body from request and save it in @info, if present;
3843 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3846 * - if HAS_BODY flag is set for this request type check whether object
3847 * actually exists on storage (lu_object_exists()).
3850 static int mdt_body_unpack(struct mdt_thread_info *info,
3851 enum tgt_handler_flags flags)
3853 const struct mdt_body *body;
3854 struct mdt_object *obj;
3855 const struct lu_env *env;
3856 struct req_capsule *pill;
3860 env = info->mti_env;
3861 pill = info->mti_pill;
3863 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3867 if (!(body->mbo_valid & OBD_MD_FLID))
3870 if (!fid_is_sane(&body->mbo_fid1)) {
3871 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3875 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3877 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
3878 mdt_object_put(env, obj);
3881 info->mti_object = obj;
3890 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3891 enum tgt_handler_flags flags)
3893 struct req_capsule *pill = info->mti_pill;
3898 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3899 rc = mdt_body_unpack(info, flags);
3903 if (rc == 0 && (flags & HAS_REPLY)) {
3905 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3906 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3908 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3909 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3912 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3913 * by default. If the target object has more ACL entries, then
3914 * enlarge the buffer when necessary. */
3915 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3916 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3917 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3919 mdt_preset_secctx_size(info);
3920 mdt_preset_encctx_size(info);
3922 rc = req_capsule_server_pack(pill);
3924 CWARN("%s: cannot pack response: rc = %d\n",
3925 mdt_obd_name(info->mti_mdt), rc);
3930 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3932 lh->mlh_type = MDT_NUL_LOCK;
3933 lh->mlh_reg_lh.cookie = 0ull;
3934 lh->mlh_reg_mode = LCK_MINMODE;
3935 lh->mlh_pdo_lh.cookie = 0ull;
3936 lh->mlh_pdo_mode = LCK_MINMODE;
3937 lh->mlh_rreg_lh.cookie = 0ull;
3938 lh->mlh_rreg_mode = LCK_MINMODE;
3941 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3943 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3944 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3948 * Initialize fields of struct mdt_thread_info. Other fields are left in
3949 * uninitialized state, because it's too expensive to zero out whole
3950 * mdt_thread_info (> 1K) on each request arrival.
3952 void mdt_thread_info_init(struct ptlrpc_request *req,
3953 struct mdt_thread_info *info)
3957 info->mti_pill = &req->rq_pill;
3960 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3961 mdt_lock_handle_init(&info->mti_lh[i]);
3963 /* mdt device: it can be NULL while CONNECT */
3964 if (req->rq_export) {
3965 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3966 info->mti_exp = req->rq_export;
3968 info->mti_mdt = NULL;
3969 info->mti_env = req->rq_svc_thread->t_env;
3970 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3972 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3973 info->mti_big_buf = LU_BUF_NULL;
3974 info->mti_body = NULL;
3975 info->mti_object = NULL;
3976 info->mti_dlm_req = NULL;
3977 info->mti_has_trans = 0;
3978 info->mti_cross_ref = 0;
3979 info->mti_opdata = 0;
3980 info->mti_big_lmm_used = 0;
3981 info->mti_big_acl_used = 0;
3982 info->mti_som_valid = 0;
3984 info->mti_spec.no_create = 0;
3985 info->mti_spec.sp_rm_entry = 0;
3986 info->mti_spec.sp_permitted = 0;
3988 info->mti_spec.u.sp_ea.eadata = NULL;
3989 info->mti_spec.u.sp_ea.eadatalen = 0;
3992 void mdt_thread_info_fini(struct mdt_thread_info *info)
3996 if (info->mti_object != NULL) {
3997 mdt_object_put(info->mti_env, info->mti_object);
3998 info->mti_object = NULL;
4001 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
4002 mdt_lock_handle_fini(&info->mti_lh[i]);
4003 info->mti_env = NULL;
4004 info->mti_pill = NULL;
4005 info->mti_exp = NULL;
4006 info->mti_mdt = NULL;
4008 if (unlikely(info->mti_big_buf.lb_buf != NULL))
4009 lu_buf_free(&info->mti_big_buf);
4012 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
4014 struct mdt_thread_info *mti;
4016 mti = mdt_th_info(tsi->tsi_env);
4017 LASSERT(mti != NULL);
4019 mdt_thread_info_init(tgt_ses_req(tsi), mti);
4020 if (tsi->tsi_corpus != NULL) {
4021 mti->mti_object = mdt_obj(tsi->tsi_corpus);
4022 lu_object_get(tsi->tsi_corpus);
4024 mti->mti_body = tsi->tsi_mdt_body;
4025 mti->mti_dlm_req = tsi->tsi_dlm_req;
4030 static int mdt_tgt_connect(struct tgt_session_info *tsi)
4032 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
4034 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
4035 schedule_timeout_uninterruptible(cfs_time_seconds(3));
4037 return tgt_connect(tsi);
4040 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
4041 struct mdt_thread_info *info,
4042 struct ldlm_lock **lockp, __u64 flags)
4044 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
4047 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
4048 struct mdt_thread_info *info,
4049 struct ldlm_lock **lockp, __u64 flags)
4051 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
4055 int mdt_intent_lock_replace(struct mdt_thread_info *info,
4056 struct ldlm_lock **lockp,
4057 struct mdt_lock_handle *lh,
4058 __u64 flags, int result)
4060 struct ptlrpc_request *req = mdt_info_req(info);
4061 struct ldlm_lock *lock = *lockp;
4062 struct ldlm_lock *new_lock;
4064 /* If possible resent found a lock, @lh is set to its handle */
4065 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
4067 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
4068 lh->mlh_reg_lh.cookie = 0;
4072 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
4073 /* Lock is pinned by ldlm_handle_enqueue0() as it is
4074 * a resend case, however, it could be already destroyed
4075 * due to client eviction or a raced cancel RPC. */
4076 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
4077 lh->mlh_reg_lh.cookie);
4078 lh->mlh_reg_lh.cookie = 0;
4082 LASSERTF(new_lock != NULL,
4083 "lockh %#llx flags %#llx : rc = %d\n",
4084 lh->mlh_reg_lh.cookie, flags, result);
4087 * If we've already given this lock to a client once, then we should
4088 * have no readers or writers. Otherwise, we should have one reader
4089 * _or_ writer ref (which will be zeroed below) before returning the
4092 if (new_lock->l_export == req->rq_export) {
4093 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
4095 LASSERT(new_lock->l_export == NULL);
4096 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
4101 if (new_lock->l_export == req->rq_export) {
4103 * Already gave this to the client, which means that we
4104 * reconstructed a reply.
4106 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
4109 LDLM_LOCK_RELEASE(new_lock);
4110 lh->mlh_reg_lh.cookie = 0;
4111 RETURN(ELDLM_LOCK_REPLACED);
4115 * Fixup the lock to be given to the client.
4117 lock_res_and_lock(new_lock);
4118 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
4119 * possible blocking AST. */
4120 while (new_lock->l_readers > 0) {
4121 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
4122 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4123 new_lock->l_readers--;
4125 while (new_lock->l_writers > 0) {
4126 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
4127 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4128 new_lock->l_writers--;
4131 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
4132 new_lock->l_blocking_ast = lock->l_blocking_ast;
4133 new_lock->l_completion_ast = lock->l_completion_ast;
4134 if (ldlm_has_dom(new_lock))
4135 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
4136 new_lock->l_remote_handle = lock->l_remote_handle;
4137 new_lock->l_flags &= ~LDLM_FL_LOCAL;
4139 unlock_res_and_lock(new_lock);
4141 cfs_hash_add(new_lock->l_export->exp_lock_hash,
4142 &new_lock->l_remote_handle,
4143 &new_lock->l_exp_hash);
4145 LDLM_LOCK_RELEASE(new_lock);
4146 lh->mlh_reg_lh.cookie = 0;
4148 RETURN(ELDLM_LOCK_REPLACED);
4151 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
4152 struct ldlm_lock *new_lock,
4153 struct mdt_lock_handle *lh, __u64 flags)
4155 struct ptlrpc_request *req = mdt_info_req(info);
4156 struct ldlm_request *dlmreq;
4158 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
4161 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
4163 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
4164 * lock was found by ldlm_handle_enqueue(); if so @lh must be
4166 if (flags & LDLM_FL_RESENT) {
4167 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
4168 lh->mlh_reg_mode = new_lock->l_granted_mode;
4170 LDLM_DEBUG(new_lock, "Restoring lock cookie");
4171 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
4172 lh->mlh_reg_lh.cookie);
4177 * If the xid matches, then we know this is a resent request, and allow
4178 * it. (It's probably an OPEN, for which we don't send a lock.
4180 if (req_can_reconstruct(req, NULL) != 0)
4184 * This remote handle isn't enqueued, so we never received or processed
4185 * this request. Clear MSG_RESENT, because it can be handled like any
4186 * normal request now.
4188 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
4190 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
4191 dlmreq->lock_handle[0].cookie);
4194 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
4195 struct mdt_thread_info *info,
4196 struct ldlm_lock **lockp,
4199 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4200 struct ldlm_reply *ldlm_rep = NULL;
4205 * Initialize lhc->mlh_reg_lh either from a previously granted lock
4206 * (for the resend case) or a new lock. Below we will use it to
4207 * replace the original lock.
4209 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4210 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4211 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
4212 rc = mdt_object_lock(info, info->mti_object, lhc,
4213 MDS_INODELOCK_XATTR);
4218 rc = mdt_getxattr(info);
4220 if (mdt_info_req(info)->rq_repmsg != NULL)
4221 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4223 if (ldlm_rep == NULL ||
4224 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
4225 mdt_object_unlock(info, info->mti_object, lhc, 1);
4229 RETURN(err_serious(-EFAULT));
4232 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4234 /* This is left for interop instead of adding a new interop flag.
4236 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
4237 if (ldlm_rep->lock_policy_res2) {
4238 mdt_object_unlock(info, info->mti_object, lhc, 1);
4239 RETURN(ELDLM_LOCK_ABORTED);
4243 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4247 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
4248 struct mdt_thread_info *info,
4249 struct ldlm_lock **lockp,
4252 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4254 struct ldlm_reply *ldlm_rep;
4255 struct mdt_body *reqbody;
4256 struct mdt_body *repbody;
4260 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4263 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4266 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4267 repbody->mbo_eadatasize = 0;
4268 repbody->mbo_aclsize = 0;
4272 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4275 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4279 CERROR("%s: unsupported intent %#x\n",
4280 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4281 GOTO(out_shrink, rc = -EINVAL);
4284 rc = mdt_init_ucred(info, reqbody);
4286 GOTO(out_shrink, rc);
4288 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4289 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4291 /* Get lock from request for possible resent case. */
4292 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4294 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4295 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4297 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
4298 ldlm_rep->lock_policy_res2 = 0;
4299 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4300 ldlm_rep->lock_policy_res2) {
4301 lhc->mlh_reg_lh.cookie = 0ull;
4302 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4305 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4308 mdt_exit_ucred(info);
4310 mdt_client_compatibility(info);
4311 rc2 = mdt_fix_reply(info);
4317 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4318 struct mdt_thread_info *info,
4319 struct ldlm_lock **lockp,
4322 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4323 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4324 struct layout_intent *intent;
4325 struct ldlm_reply *ldlm_rep;
4326 struct lu_fid *fid = &info->mti_tmp_fid2;
4327 struct mdt_object *obj = NULL;
4328 int layout_size = 0;
4329 struct lu_buf *buf = &layout.mlc_buf;
4334 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4336 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4340 CDEBUG(D_INFO, DFID "got layout change request from client: "
4341 "opc:%u flags:%#x extent "DEXT"\n",
4342 PFID(fid), intent->li_opc, intent->li_flags,
4343 PEXT(&intent->li_extent));
4345 switch (intent->li_opc) {
4346 case LAYOUT_INTENT_TRUNC:
4347 case LAYOUT_INTENT_WRITE:
4348 layout.mlc_opc = MD_LAYOUT_WRITE;
4349 layout.mlc_intent = intent;
4351 case LAYOUT_INTENT_ACCESS:
4353 case LAYOUT_INTENT_READ:
4354 case LAYOUT_INTENT_GLIMPSE:
4355 case LAYOUT_INTENT_RELEASE:
4356 case LAYOUT_INTENT_RESTORE:
4357 CERROR("%s: Unsupported layout intent opc %d\n",
4358 mdt_obd_name(info->mti_mdt), intent->li_opc);
4361 CERROR("%s: Unknown layout intent opc %d\n",
4362 mdt_obd_name(info->mti_mdt), intent->li_opc);
4366 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4368 RETURN(PTR_ERR(obj));
4370 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4371 /* if layout is going to be changed don't use the current EA
4372 * size but the maximum one. That buffer will be shrinked
4373 * to the actual size in req_capsule_shrink() before reply.
4375 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4376 layout_size = info->mti_mdt->mdt_max_mdsize;
4378 layout_size = mdt_attr_get_eabuf_size(info, obj);
4379 if (layout_size < 0)
4380 GOTO(out, rc = layout_size);
4382 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4383 info->mti_mdt->mdt_max_mdsize = layout_size;
4385 CDEBUG(D_INFO, "%s: layout_size %d\n",
4386 mdt_obd_name(info->mti_mdt), layout_size);
4390 * set reply buffer size, so that ldlm_handle_enqueue0()->
4391 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4393 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4395 rc = req_capsule_server_pack(info->mti_pill);
4399 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4401 GOTO(out, rc = -EPROTO);
4403 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4405 /* take lock in ldlm_lock_enqueue() for LAYOUT_INTENT_ACCESS */
4406 if (layout.mlc_opc == MD_LAYOUT_NOP)
4409 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4413 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
4414 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
4420 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4421 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4423 buf->lb_len = req_capsule_get_size(info->mti_pill,
4424 &RMF_EADATA, RCL_CLIENT);
4426 * If it's a replay of layout write intent RPC, the client has
4427 * saved the extended lovea when it get reply then.
4429 if (buf->lb_len > 0)
4430 mdt_fix_lov_magic(info, buf->lb_buf);
4433 /* Get lock from request for possible resent case. */
4434 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4435 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4438 * Instantiate some layout components, if @buf contains lovea, then it's
4439 * a replay of the layout intent write RPC.
4441 rc = mdt_layout_change(info, obj, lhc, &layout);
4442 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4444 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4445 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4446 if (rc == ELDLM_LOCK_REPLACED &&
4447 (*lockp)->l_granted_mode == LCK_EX)
4448 ldlm_lock_mode_downgrade(*lockp, LCK_CR);
4453 mdt_object_put(info->mti_env, obj);
4457 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
4458 struct mdt_thread_info *info,
4459 struct ldlm_lock **lockp,
4462 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4463 struct ldlm_reply *rep = NULL;
4466 struct ptlrpc_request *req = mdt_info_req(info);
4468 static const struct req_format *intent_fmts[REINT_MAX] = {
4469 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
4470 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
4475 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
4479 /* Get lock from request for possible resent case. */
4480 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4482 rc = mdt_reint_internal(info, lhc, opc);
4484 if (rc < 0 && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
4485 DEBUG_REQ(D_ERROR, req, "Replay open failed with %d", rc);
4487 /* Check whether the reply has been packed successfully. */
4488 if (mdt_info_req(info)->rq_repmsg != NULL)
4489 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4494 RETURN(err_serious(-EFAULT));
4497 /* MDC expects this in any case */
4499 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
4501 /* the open lock or the lock for cross-ref object should be
4502 * returned to the client */
4503 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
4504 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
4505 rep->lock_policy_res2 = 0;
4506 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4510 rep->lock_policy_res2 = clear_serious(rc);
4512 if (rep->lock_policy_res2 == -ENOENT &&
4513 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
4514 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
4515 rep->lock_policy_res2 = 0;
4517 lhc->mlh_reg_lh.cookie = 0ull;
4518 if (rc == -ENOTCONN || rc == -ENODEV ||
4519 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4521 * If it is the disconnect error (ENODEV & ENOCONN), the error
4522 * will be returned by rq_status, and client at ptlrpc layer
4523 * will detect this, then disconnect, reconnect the import
4524 * immediately, instead of impacting the following the rpc.
4529 * For other cases, the error will be returned by intent, and client
4530 * will retrieve the result from intent.
4532 RETURN(ELDLM_LOCK_ABORTED);
4535 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4536 struct mdt_thread_info *info,
4537 struct ldlm_lock **lockp,
4538 u64 flags /* LDLM_FL_* */)
4540 struct req_capsule *pill = info->mti_pill;
4541 struct ptlrpc_request *req = mdt_info_req(info);
4542 const struct req_format *it_format;
4543 int (*it_handler)(enum ldlm_intent_flags,
4544 struct mdt_thread_info *,
4545 struct ldlm_lock **,
4547 enum tgt_handler_flags it_handler_flags = 0;
4548 struct ldlm_reply *rep;
4549 bool check_mdt_object = false;
4555 case IT_OPEN|IT_CREAT:
4557 * OCREAT is not a IS_MUTABLE request since the file may
4558 * already exist. We do the extra check of
4559 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4560 * really need to create the object.
4562 it_format = &RQF_LDLM_INTENT;
4563 it_handler = &mdt_intent_open;
4566 check_mdt_object = true;
4569 it_format = &RQF_LDLM_INTENT_GETATTR;
4570 it_handler = &mdt_intent_getattr;
4571 it_handler_flags = HAS_REPLY;
4574 check_mdt_object = true;
4575 it_format = &RQF_LDLM_INTENT_GETXATTR;
4576 it_handler = &mdt_intent_getxattr;
4577 it_handler_flags = HAS_BODY;
4580 it_format = &RQF_LDLM_INTENT_LAYOUT;
4581 it_handler = &mdt_intent_layout;
4584 it_format = &RQF_LDLM_INTENT;
4585 it_handler = &mdt_intent_glimpse;
4588 it_format = &RQF_LDLM_INTENT;
4589 it_handler = &mdt_intent_brw;
4591 case IT_QUOTA_DQACQ:
4592 case IT_QUOTA_CONN: {
4593 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4596 RETURN(-EOPNOTSUPP);
4598 if (mdt_rdonly(req->rq_export))
4601 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4602 /* pass the request to quota master */
4603 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4604 mdt_info_req(info), lockp,
4609 CERROR("%s: unknown intent code %#x\n",
4610 mdt_obd_name(info->mti_mdt), it_opc);
4614 req_capsule_extend(pill, it_format);
4616 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4620 if (unlikely(info->mti_object == NULL && check_mdt_object))
4623 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4626 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4628 /* execute policy */
4629 rc = (*it_handler)(it_opc, info, lockp, flags);
4631 /* Check whether the reply has been packed successfully. */
4632 if (req->rq_repmsg != NULL) {
4633 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4634 rep->lock_policy_res2 =
4635 ptlrpc_status_hton(rep->lock_policy_res2);
4641 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4642 enum ldlm_intent_flags it_opc)
4644 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4646 /* update stats when IT code is known */
4647 if (srv_stats != NULL)
4648 lprocfs_counter_incr(srv_stats,
4649 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4650 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4653 static int mdt_intent_policy(const struct lu_env *env,
4654 struct ldlm_namespace *ns,
4655 struct ldlm_lock **lockp,
4657 enum ldlm_mode mode,
4658 __u64 flags, void *data)
4660 struct tgt_session_info *tsi;
4661 struct mdt_thread_info *info;
4662 struct ptlrpc_request *req = req_cookie;
4663 struct ldlm_intent *it;
4664 struct req_capsule *pill;
4665 const struct ldlm_lock_desc *ldesc;
4670 LASSERT(req != NULL);
4672 tsi = tgt_ses_info(env);
4674 info = tsi2mdt_info(tsi);
4675 LASSERT(info != NULL);
4676 pill = info->mti_pill;
4677 LASSERT(pill->rc_req == req);
4678 ldesc = &info->mti_dlm_req->lock_desc;
4680 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4681 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4682 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4684 mdt_ptlrpc_stats_update(req, it->opc);
4685 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4689 /* Lock without inodebits makes no sense and will oops
4690 * later in ldlm. Let's check it now to see if we have
4691 * ibits corrupted somewhere in mdt_intent_opc().
4692 * The case for client miss to set ibits has been
4693 * processed by others. */
4694 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4695 ldesc->l_policy_data.l_inodebits.bits != 0));
4697 rc = err_serious(-EFAULT);
4699 } else if (ldesc->l_resource.lr_type == LDLM_IBITS &&
4700 ldesc->l_policy_data.l_inodebits.bits == MDS_INODELOCK_DOM) {
4701 struct ldlm_reply *rep;
4703 /* No intent was provided but INTENT flag is set along with
4704 * DOM bit, this is considered as GLIMPSE request.
4705 * This logic is common for MDT and OST glimpse
4707 mdt_ptlrpc_stats_update(req, IT_GLIMPSE);
4708 rc = mdt_glimpse_enqueue(info, ns, lockp, flags);
4709 /* Check whether the reply has been packed successfully. */
4710 if (req->rq_repmsg != NULL) {
4711 rep = req_capsule_server_get(info->mti_pill,
4713 rep->lock_policy_res2 =
4714 ptlrpc_status_hton(rep->lock_policy_res2);
4717 /* No intent was provided */
4718 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4719 rc = req_capsule_server_pack(pill);
4721 rc = err_serious(rc);
4723 mdt_thread_info_fini(info);
4727 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4729 struct seq_server_site *ss = mdt_seq_site(mdt);
4731 if (ss->ss_node_id == 0)
4734 if (ss->ss_client_seq != NULL) {
4735 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4736 ss->ss_client_seq->lcs_exp = NULL;
4739 if (ss->ss_server_fld != NULL) {
4740 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4741 ss->ss_server_fld->lsf_control_exp = NULL;
4745 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4747 struct seq_server_site *ss = mdt_seq_site(mdt);
4752 if (ss->ss_server_seq != NULL)
4753 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4756 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4758 mdt_seq_fini_cli(mdt);
4759 mdt_deregister_seq_exp(mdt);
4761 return seq_site_fini(env, mdt_seq_site(mdt));
4765 * It will retrieve its FLDB entries from MDT0, and it only happens
4766 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4767 * and it needs to refresh FLDB from the MDT0.
4769 static int mdt_register_lwp_callback(void *data)
4772 struct mdt_device *mdt = data;
4773 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4777 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4779 rc = lu_env_init(&env, LCT_MD_THREAD);
4781 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4785 /* Allocate new sequence now to avoid creating local transaction
4786 * in the normal transaction process */
4787 rc = seq_server_check_and_alloc_super(&env,
4788 mdt_seq_site(mdt)->ss_server_seq);
4793 rc = fld_update_from_controller(&env, fld);
4795 CERROR("%s: cannot update controller: rc = %d\n",
4796 mdt_obd_name(mdt), rc);
4805 static int mdt_register_seq_exp(struct mdt_device *mdt)
4807 struct seq_server_site *ss = mdt_seq_site(mdt);
4808 char *lwp_name = NULL;
4811 if (ss->ss_node_id == 0)
4814 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4815 if (lwp_name == NULL)
4816 GOTO(out_free, rc = -ENOMEM);
4818 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4822 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4827 rc = lustre_register_lwp_item(lwp_name,
4828 &ss->ss_server_fld->lsf_control_exp,
4829 mdt_register_lwp_callback, mdt);
4831 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4832 ss->ss_client_seq->lcs_exp = NULL;
4836 if (lwp_name != NULL)
4837 OBD_FREE(lwp_name, MAX_OBD_NAME);
4843 * Init client sequence manager which is used by local MDS to talk to sequence
4844 * controller on remote node.
4846 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4848 struct seq_server_site *ss = mdt_seq_site(mdt);
4852 /* check if this is adding the first MDC and controller is not yet
4854 OBD_ALLOC_PTR(ss->ss_client_seq);
4855 if (ss->ss_client_seq == NULL)
4858 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4859 if (prefix == NULL) {
4860 OBD_FREE_PTR(ss->ss_client_seq);
4861 ss->ss_client_seq = NULL;
4865 /* Note: seq_client_fini will be called in seq_site_fini */
4866 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4867 seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4868 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4870 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4872 RETURN(seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq));
4875 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4877 struct seq_server_site *ss;
4881 ss = mdt_seq_site(mdt);
4882 /* init sequence controller server(MDT0) */
4883 if (ss->ss_node_id == 0) {
4884 OBD_ALLOC_PTR(ss->ss_control_seq);
4885 if (ss->ss_control_seq == NULL)
4888 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4889 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4892 GOTO(out_seq_fini, rc);
4895 /* Init normal sequence server */
4896 OBD_ALLOC_PTR(ss->ss_server_seq);
4897 if (ss->ss_server_seq == NULL)
4898 GOTO(out_seq_fini, rc = -ENOMEM);
4900 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4901 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4903 GOTO(out_seq_fini, rc);
4905 /* init seq client for seq server to talk to seq controller(MDT0) */
4906 rc = mdt_seq_init_cli(env, mdt);
4908 GOTO(out_seq_fini, rc);
4910 if (ss->ss_node_id != 0)
4911 /* register controller export through lwp */
4912 rc = mdt_register_seq_exp(mdt);
4917 mdt_seq_fini(env, mdt);
4925 static int mdt_fld_fini(const struct lu_env *env,
4926 struct mdt_device *m)
4928 struct seq_server_site *ss = mdt_seq_site(m);
4931 if (ss && ss->ss_server_fld) {
4932 fld_server_fini(env, ss->ss_server_fld);
4933 OBD_FREE_PTR(ss->ss_server_fld);
4934 ss->ss_server_fld = NULL;
4940 static int mdt_fld_init(const struct lu_env *env,
4942 struct mdt_device *m)
4944 struct seq_server_site *ss;
4948 ss = mdt_seq_site(m);
4950 OBD_ALLOC_PTR(ss->ss_server_fld);
4951 if (ss->ss_server_fld == NULL)
4952 RETURN(rc = -ENOMEM);
4954 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4957 OBD_FREE_PTR(ss->ss_server_fld);
4958 ss->ss_server_fld = NULL;
4965 static void mdt_stack_pre_fini(const struct lu_env *env,
4966 struct mdt_device *m, struct lu_device *top)
4968 struct lustre_cfg_bufs *bufs;
4969 struct lustre_cfg *lcfg;
4970 struct mdt_thread_info *info;
4975 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4976 LASSERT(info != NULL);
4978 bufs = &info->mti_u.bufs;
4980 LASSERT(m->mdt_child_exp);
4981 LASSERT(m->mdt_child_exp->exp_obd);
4983 /* process cleanup, pass mdt obd name to get obd umount flags */
4984 /* XXX: this is needed because all layers are referenced by
4985 * objects (some of them are pinned by osd, for example *
4986 * the proper solution should be a model where object used
4987 * by osd only doesn't have mdt/mdd slices -bzzz */
4988 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4989 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4990 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4993 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4995 top->ld_ops->ldo_process_config(env, top, lcfg);
4996 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5000 static void mdt_stack_fini(const struct lu_env *env,
5001 struct mdt_device *m, struct lu_device *top)
5003 struct obd_device *obd = mdt2obd_dev(m);
5004 struct lustre_cfg_bufs *bufs;
5005 struct lustre_cfg *lcfg;
5006 struct mdt_thread_info *info;
5010 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5011 LASSERT(info != NULL);
5013 lu_dev_del_linkage(top->ld_site, top);
5015 lu_site_purge(env, top->ld_site, -1);
5017 bufs = &info->mti_u.bufs;
5018 /* process cleanup, pass mdt obd name to get obd umount flags */
5019 /* another purpose is to let all layers to release their objects */
5020 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5025 lustre_cfg_bufs_set_string(bufs, 1, flags);
5026 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5029 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
5032 top->ld_ops->ldo_process_config(env, top, lcfg);
5033 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5035 lu_site_purge(env, top->ld_site, -1);
5037 m->mdt_child = NULL;
5038 m->mdt_bottom = NULL;
5040 obd_disconnect(m->mdt_child_exp);
5041 m->mdt_child_exp = NULL;
5043 obd_disconnect(m->mdt_bottom_exp);
5044 m->mdt_child_exp = NULL;
5047 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
5048 const char *next, struct obd_export **exp)
5050 struct obd_connect_data *data = NULL;
5051 struct obd_device *obd;
5055 OBD_ALLOC_PTR(data);
5057 GOTO(out, rc = -ENOMEM);
5059 obd = class_name2obd(next);
5061 CERROR("%s: can't locate next device: %s\n",
5062 mdt_obd_name(m), next);
5063 GOTO(out, rc = -ENOTCONN);
5066 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5067 data->ocd_version = LUSTRE_VERSION_CODE;
5069 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
5071 CERROR("%s: cannot connect to next dev %s (%d)\n",
5072 mdt_obd_name(m), next, rc);
5082 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
5083 struct lustre_cfg *cfg)
5085 char *dev = lustre_cfg_string(cfg, 0);
5086 int rc, name_size, uuid_size;
5087 char *name, *uuid, *p;
5088 struct lustre_cfg_bufs *bufs;
5089 struct lustre_cfg *lcfg;
5090 struct obd_device *obd;
5091 struct lustre_profile *lprof;
5092 struct lu_site *site;
5095 /* in 1.8 we had the only device in the stack - MDS.
5096 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
5097 * in 2.3 OSD is instantiated by obd_mount.c, so we need
5098 * to generate names and setup MDT, MDD. MDT will be using
5099 * generated name to connect to MDD. for MDD the next device
5100 * will be LOD with name taken from so called "profile" which
5101 * is generated by mount_option line
5103 * 1.8 MGS generates config. commands like this:
5104 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
5105 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
5106 * 2.0 MGS generates config. commands like this:
5107 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
5108 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5109 * 3:lustre-MDT0000-mdtlov 4:f
5111 * we generate MDD name from MDT one, just replacing T with D
5113 * after all the preparations, the logical equivalent will be
5114 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
5115 * 3:lustre-MDT0000-mdtlov 4:f
5116 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5117 * 3:lustre-MDD0000 4:f
5119 * notice we build the stack from down to top: MDD first, then MDT */
5121 name_size = MAX_OBD_NAME;
5122 uuid_size = MAX_OBD_NAME;
5124 OBD_ALLOC(name, name_size);
5125 OBD_ALLOC(uuid, uuid_size);
5126 if (name == NULL || uuid == NULL)
5127 GOTO(cleanup_mem, rc = -ENOMEM);
5129 OBD_ALLOC_PTR(bufs);
5131 GOTO(cleanup_mem, rc = -ENOMEM);
5134 p = strstr(name, "-MDT");
5136 GOTO(free_bufs, rc = -ENOMEM);
5139 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
5141 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5142 if (lprof == NULL || lprof->lp_dt == NULL) {
5143 CERROR("can't find the profile: %s\n",
5144 lustre_cfg_string(cfg, 0));
5145 GOTO(free_bufs, rc = -EINVAL);
5148 lustre_cfg_bufs_reset(bufs, name);
5149 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
5150 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5151 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5153 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5155 GOTO(put_profile, rc = -ENOMEM);
5156 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5158 rc = class_attach(lcfg);
5160 GOTO(lcfg_cleanup, rc);
5162 obd = class_name2obd(name);
5164 CERROR("Can not find obd %s (%s in config)\n",
5165 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
5166 GOTO(lcfg_cleanup, rc = -EINVAL);
5169 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5171 lustre_cfg_bufs_reset(bufs, name);
5172 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5173 lustre_cfg_bufs_set_string(bufs, 2, dev);
5174 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5176 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5178 GOTO(class_detach, rc = -ENOMEM);
5179 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5181 rc = class_setup(obd, lcfg);
5183 GOTO(class_detach, rc);
5185 /* connect to MDD we just setup */
5186 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
5188 GOTO(class_detach, rc);
5190 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
5192 LASSERT(mdt_lu_site(mdt) == NULL);
5193 mdt->mdt_lu_dev.ld_site = site;
5194 site->ls_top_dev = &mdt->mdt_lu_dev;
5195 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
5197 /* now connect to bottom OSD */
5198 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
5199 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
5201 GOTO(class_detach, rc);
5203 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
5205 rc = lu_env_refill((struct lu_env *)env);
5207 CERROR("Failure to refill session: '%d'\n", rc);
5209 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
5214 class_detach(obd, lcfg);
5216 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5218 class_put_profile(lprof);
5223 OBD_FREE(name, name_size);
5225 OBD_FREE(uuid, uuid_size);
5229 /* setup quota master target on MDT0 */
5230 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
5231 struct lustre_cfg *cfg)
5233 struct obd_device *obd;
5234 char *dev = lustre_cfg_string(cfg, 0);
5235 char *qmtname, *uuid, *p;
5236 struct lustre_cfg_bufs *bufs;
5237 struct lustre_cfg *lcfg;
5238 struct lustre_profile *lprof;
5239 struct obd_connect_data *data;
5243 LASSERT(mdt->mdt_qmt_exp == NULL);
5244 LASSERT(mdt->mdt_qmt_dev == NULL);
5246 /* quota master is on MDT0 only for now */
5247 if (mdt->mdt_seq_site.ss_node_id != 0)
5250 /* MGS generates config commands which look as follows:
5251 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5252 * 3:lustre-MDT0000-mdtlov 4:f
5254 * We generate the QMT name from the MDT one, just replacing MD with QM
5255 * after all the preparations, the logical equivalent will be:
5256 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
5257 * 3:lustre-MDT0000-osd 4:f */
5258 OBD_ALLOC(qmtname, MAX_OBD_NAME);
5259 OBD_ALLOC(uuid, UUID_MAX);
5260 OBD_ALLOC_PTR(bufs);
5261 OBD_ALLOC_PTR(data);
5262 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5263 GOTO(cleanup_mem, rc = -ENOMEM);
5265 strcpy(qmtname, dev);
5266 p = strstr(qmtname, "-MDT");
5268 GOTO(cleanup_mem, rc = -ENOMEM);
5269 /* replace MD with QM */
5273 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5275 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5276 if (lprof == NULL || lprof->lp_dt == NULL) {
5277 CERROR("can't find profile for %s\n",
5278 lustre_cfg_string(cfg, 0));
5279 GOTO(cleanup_mem, rc = -EINVAL);
5282 lustre_cfg_bufs_reset(bufs, qmtname);
5283 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5284 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5285 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5287 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5289 GOTO(put_profile, rc = -ENOMEM);
5290 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5292 rc = class_attach(lcfg);
5294 GOTO(lcfg_cleanup, rc);
5296 obd = class_name2obd(qmtname);
5298 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5299 lustre_cfg_string(cfg, 0));
5300 GOTO(lcfg_cleanup, rc = -EINVAL);
5303 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5305 lustre_cfg_bufs_reset(bufs, qmtname);
5306 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5307 lustre_cfg_bufs_set_string(bufs, 2, dev);
5309 /* for quota, the next device should be the OSD device */
5310 lustre_cfg_bufs_set_string(bufs, 3,
5311 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5313 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5315 GOTO(class_detach, rc = -ENOMEM);
5316 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5318 rc = class_setup(obd, lcfg);
5320 GOTO(class_detach, rc);
5322 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5324 /* configure local quota objects */
5325 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5328 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5332 GOTO(class_cleanup, rc);
5334 /* connect to quota master target */
5335 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5336 data->ocd_version = LUSTRE_VERSION_CODE;
5337 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5340 CERROR("cannot connect to quota master device %s (%d)\n",
5342 GOTO(class_cleanup, rc);
5348 class_manual_cleanup(obd);
5349 mdt->mdt_qmt_dev = NULL;
5350 GOTO(lcfg_cleanup, rc);
5354 class_detach(obd, lcfg);
5356 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5358 class_put_profile(lprof);
5363 OBD_FREE(qmtname, MAX_OBD_NAME);
5365 OBD_FREE(uuid, UUID_MAX);
5371 /* Shutdown quota master target associated with mdt */
5372 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5376 if (mdt->mdt_qmt_exp == NULL)
5378 LASSERT(mdt->mdt_qmt_dev != NULL);
5380 /* the qmt automatically shuts down when the mdt disconnects */
5381 obd_disconnect(mdt->mdt_qmt_exp);
5382 mdt->mdt_qmt_exp = NULL;
5383 mdt->mdt_qmt_dev = NULL;
5387 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5388 * for now. This will be removed along with converting rest of MDT code
5389 * to use tgt_session_info */
5390 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5392 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5395 if (unlikely(info->mti_object == NULL))
5398 rc = mdt_getxattr(info);
5400 mdt_thread_info_fini(info);
5404 static int mdt_llog_open(struct tgt_session_info *tsi)
5408 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
5409 RETURN(err_serious(-EACCES));
5411 RETURN(tgt_llog_open(tsi));
5414 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
5415 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
5416 #define OST_BRW_READ OST_READ
5417 #define OST_BRW_WRITE OST_WRITE
5419 static struct tgt_handler mdt_tgt_handlers[] = {
5420 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5421 0, MDS_CONNECT, mdt_tgt_connect,
5422 &RQF_CONNECT, LUSTRE_OBD_VERSION),
5423 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5424 0, MDS_DISCONNECT, tgt_disconnect,
5425 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
5426 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5427 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
5428 &RQF_MDT_SET_INFO, LUSTRE_MDS_VERSION),
5429 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
5430 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
5431 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
5432 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
5434 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
5435 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
5436 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
5437 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
5438 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
5439 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
5440 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
5441 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
5443 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
5444 mdt_hsm_ct_register),
5445 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
5446 mdt_hsm_ct_unregister),
5447 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
5449 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
5451 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
5452 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
5454 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
5457 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
5460 static struct tgt_handler mdt_io_ops[] = {
5461 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
5463 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
5465 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
5466 OST_PUNCH, mdt_punch_hdl,
5468 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
5469 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SEEK, tgt_lseek),
5472 static struct tgt_handler mdt_sec_ctx_ops[] = {
5473 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
5474 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
5475 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
5478 static struct tgt_handler mdt_quota_ops[] = {
5479 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
5482 static struct tgt_handler mdt_llog_handlers[] = {
5483 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_CREATE, mdt_llog_open),
5484 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
5485 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
5486 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
5489 static struct tgt_opc_slice mdt_common_slice[] = {
5491 .tos_opc_start = MDS_FIRST_OPC,
5492 .tos_opc_end = MDS_LAST_OPC,
5493 .tos_hs = mdt_tgt_handlers
5496 .tos_opc_start = OBD_FIRST_OPC,
5497 .tos_opc_end = OBD_LAST_OPC,
5498 .tos_hs = tgt_obd_handlers
5501 .tos_opc_start = LDLM_FIRST_OPC,
5502 .tos_opc_end = LDLM_LAST_OPC,
5503 .tos_hs = tgt_dlm_handlers
5506 .tos_opc_start = SEC_FIRST_OPC,
5507 .tos_opc_end = SEC_LAST_OPC,
5508 .tos_hs = mdt_sec_ctx_ops
5511 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
5512 .tos_opc_end = OUT_UPDATE_LAST_OPC,
5513 .tos_hs = tgt_out_handlers
5516 .tos_opc_start = FLD_FIRST_OPC,
5517 .tos_opc_end = FLD_LAST_OPC,
5518 .tos_hs = fld_handlers
5521 .tos_opc_start = SEQ_FIRST_OPC,
5522 .tos_opc_end = SEQ_LAST_OPC,
5523 .tos_hs = seq_handlers
5526 .tos_opc_start = QUOTA_DQACQ,
5527 .tos_opc_end = QUOTA_LAST_OPC,
5528 .tos_hs = mdt_quota_ops
5531 .tos_opc_start = LLOG_FIRST_OPC,
5532 .tos_opc_end = LLOG_LAST_OPC,
5533 .tos_hs = mdt_llog_handlers
5536 .tos_opc_start = LFSCK_FIRST_OPC,
5537 .tos_opc_end = LFSCK_LAST_OPC,
5538 .tos_hs = tgt_lfsck_handlers
5541 .tos_opc_start = OST_FIRST_OPC,
5542 .tos_opc_end = OST_LAST_OPC,
5543 .tos_hs = mdt_io_ops
5550 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
5552 struct md_device *next = m->mdt_child;
5553 struct lu_device *d = &m->mdt_lu_dev;
5554 struct obd_device *obd = mdt2obd_dev(m);
5555 struct lfsck_stop stop;
5558 stop.ls_status = LS_PAUSED;
5560 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5562 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5564 mdt_restriper_stop(m);
5565 ping_evictor_stop();
5567 /* Remove the HSM /proc entry so the coordinator cannot be
5568 * restarted by a user while it's shutting down.
5570 mdt_hsm_cdt_stop(m);
5572 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5573 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5575 if (m->mdt_namespace != NULL)
5576 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5577 d->ld_obd->obd_force);
5579 obd_exports_barrier(obd);
5580 obd_zombie_barrier();
5582 mdt_quota_fini(env, m);
5584 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5586 /* Calling the cleanup functions in the same order as in the mdt_init0
5589 mdt_tunables_fini(m);
5591 target_recovery_fini(obd);
5592 upcall_cache_cleanup(m->mdt_identity_cache);
5593 m->mdt_identity_cache = NULL;
5595 mdt_fs_cleanup(env, m);
5597 tgt_fini(env, &m->mdt_lut);
5599 mdt_hsm_cdt_fini(m);
5601 if (m->mdt_los != NULL) {
5602 local_oid_storage_fini(env, m->mdt_los);
5606 if (m->mdt_namespace != NULL) {
5607 ldlm_namespace_free_post(m->mdt_namespace);
5608 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5611 if (m->mdt_md_root != NULL) {
5612 mdt_object_put(env, m->mdt_md_root);
5613 m->mdt_md_root = NULL;
5616 mdt_seq_fini(env, m);
5618 mdt_fld_fini(env, m);
5623 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5625 LASSERT(atomic_read(&d->ld_ref) == 0);
5627 server_put_mount(mdt_obd_name(m), true);
5632 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5634 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5635 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5637 const struct dt_device_param *dt_conf;
5638 struct mdt_thread_info *info;
5639 struct obd_device *obd;
5640 const char *dev = lustre_cfg_string(cfg, 0);
5641 const char *num = lustre_cfg_string(cfg, 2);
5642 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5643 struct lustre_mount_info *lmi = NULL;
5644 struct lustre_sb_info *lsi;
5646 struct seq_server_site *ss_site;
5647 const char *identity_upcall = "NONE";
5648 struct md_device *next;
5655 lu_device_init(&m->mdt_lu_dev, ldt);
5657 * Environment (env) might be missing mdt_thread_key values at that
5658 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5661 * Usually device allocation path doesn't use module key values, but
5662 * mdt has to do a lot of work here, so allocate key value.
5664 rc = lu_env_refill((struct lu_env *)env);
5668 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5669 LASSERT(info != NULL);
5671 obd = class_name2obd(dev);
5672 LASSERT(obd != NULL);
5674 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5675 m->mdt_opts.mo_evict_tgt_nids = 1;
5676 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5678 lmi = server_get_mount(dev);
5680 CERROR("Cannot get mount info for %s!\n", dev);
5683 lsi = s2lsi(lmi->lmi_sb);
5684 LASSERT(lsi->lsi_lmd);
5685 /* CMD is supported only in IAM mode */
5687 rc = kstrtol(num, 10, &node_id);
5691 obd->u.obt.obt_magic = OBT_MAGIC;
5692 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5693 m->mdt_skip_lfsck = 1;
5696 /* Just try to get a DoM lock by default. Otherwise, having a group
5697 * lock granted, it may get blocked for a long time. */
5698 m->mdt_opts.mo_dom_lock = TRYLOCK_DOM_ON_OPEN;
5699 /* DoM files are read at open and data is packed in the reply */
5700 m->mdt_opts.mo_dom_read_open = 1;
5702 m->mdt_squash.rsi_uid = 0;
5703 m->mdt_squash.rsi_gid = 0;
5704 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5705 spin_lock_init(&m->mdt_squash.rsi_lock);
5706 spin_lock_init(&m->mdt_lock);
5707 m->mdt_enable_remote_dir = 1;
5708 m->mdt_enable_striped_dir = 1;
5709 m->mdt_enable_dir_migration = 1;
5710 m->mdt_enable_dir_restripe = 0;
5711 m->mdt_enable_dir_auto_split = 0;
5712 m->mdt_enable_remote_dir_gid = 0;
5713 m->mdt_enable_chprojid_gid = 0;
5714 m->mdt_enable_remote_rename = 1;
5715 m->mdt_dir_restripe_nsonly = 1;
5716 m->mdt_enable_remote_subdir_mount = 1;
5718 atomic_set(&m->mdt_mds_mds_conns, 0);
5719 atomic_set(&m->mdt_async_commit_count, 0);
5721 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5722 m->mdt_lu_dev.ld_obd = obd;
5723 /* Set this lu_device to obd for error handling purposes. */
5724 obd->obd_lu_dev = &m->mdt_lu_dev;
5726 /* init the stack */
5727 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5729 CERROR("%s: Can't init device stack, rc %d\n",
5730 mdt_obd_name(m), rc);
5735 ss_site = mdt_seq_site(m);
5736 s->ld_seq_site = ss_site;
5739 /* set server index */
5740 ss_site->ss_node_id = node_id;
5742 /* failover is the default
5743 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5744 * assumed whose ss_node_id == 0 XXX
5746 obd->obd_replayable = 1;
5747 /* No connection accepted until configurations will finish */
5748 obd->obd_no_conn = 1;
5750 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5751 char *str = lustre_cfg_string(cfg, 4);
5752 if (strchr(str, 'n')) {
5753 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5754 obd->obd_replayable = 0;
5758 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5760 GOTO(err_fini_stack, rc);
5762 rc = mdt_seq_init(env, m);
5764 GOTO(err_fini_fld, rc);
5766 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5767 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5768 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5769 LDLM_NAMESPACE_SERVER,
5770 LDLM_NAMESPACE_GREEDY,
5772 if (IS_ERR(m->mdt_namespace)) {
5773 rc = PTR_ERR(m->mdt_namespace);
5774 CERROR("%s: unable to create server namespace: rc = %d\n",
5776 m->mdt_namespace = NULL;
5777 GOTO(err_fini_seq, rc);
5780 m->mdt_namespace->ns_lvbp = m;
5781 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5783 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5784 /* set obd_namespace for compatibility with old code */
5785 obd->obd_namespace = m->mdt_namespace;
5787 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5788 OBD_FAIL_MDS_ALL_REQUEST_NET,
5789 OBD_FAIL_MDS_ALL_REPLY_NET);
5791 GOTO(err_free_ns, rc);
5793 /* Amount of available space excluded from granting and reserved
5794 * for metadata. It is a percentage of the total MDT size. */
5795 tgd->tgd_reserved_pcnt = 10;
5797 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5798 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5800 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5802 rc = mdt_fs_setup(env, m, obd, lsi);
5806 fid.f_seq = FID_SEQ_LOCAL_NAME;
5809 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5811 GOTO(err_fs_cleanup, rc);
5813 rc = mdt_hsm_cdt_init(m);
5815 CERROR("%s: error initializing coordinator, rc %d\n",
5816 mdt_obd_name(m), rc);
5817 GOTO(err_los_fini, rc);
5820 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5822 next = m->mdt_child;
5823 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5825 mntopts = dt_conf->ddp_mntopts;
5827 if (mntopts & MNTOPT_USERXATTR)
5828 m->mdt_opts.mo_user_xattr = 1;
5830 m->mdt_opts.mo_user_xattr = 0;
5832 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5834 if (mntopts & MNTOPT_ACL)
5835 m->mdt_opts.mo_acl = 1;
5837 m->mdt_opts.mo_acl = 0;
5839 /* XXX: to support suppgid for ACL, we enable identity_upcall
5840 * by default, otherwise, maybe got unexpected -EACCESS. */
5841 if (m->mdt_opts.mo_acl)
5842 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5844 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5846 &mdt_identity_upcall_cache_ops);
5847 if (IS_ERR(m->mdt_identity_cache)) {
5848 rc = PTR_ERR(m->mdt_identity_cache);
5849 m->mdt_identity_cache = NULL;
5850 GOTO(err_free_hsm, rc);
5853 rc = mdt_tunables_init(m, dev);
5855 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5856 GOTO(err_recovery, rc);
5859 rc = mdt_quota_init(env, m, cfg);
5861 GOTO(err_procfs, rc);
5863 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5864 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5865 "mdt_ldlm_client", m->mdt_ldlm_client);
5867 ping_evictor_start();
5869 /* recovery will be started upon mdt_prepare()
5870 * when the whole stack is complete and ready
5871 * to serve the requests */
5873 /* Reduce the initial timeout on an MDS because it doesn't need such
5874 * a long timeout as an OST does. Adaptive timeouts will adjust this
5875 * value appropriately. */
5876 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5877 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5879 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_LOCAL_RECOV))
5880 m->mdt_lut.lut_local_recovery = 1;
5882 rc = mdt_restriper_start(m);
5884 GOTO(err_ping_evictor, rc);
5889 ping_evictor_stop();
5891 mdt_tunables_fini(m);
5893 upcall_cache_cleanup(m->mdt_identity_cache);
5894 m->mdt_identity_cache = NULL;
5896 mdt_hsm_cdt_fini(m);
5898 local_oid_storage_fini(env, m->mdt_los);
5901 mdt_fs_cleanup(env, m);
5903 /* keep recoverable clients */
5905 target_recovery_fini(obd);
5906 obd_exports_barrier(obd);
5907 obd_zombie_barrier();
5908 tgt_fini(env, &m->mdt_lut);
5910 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5911 obd->obd_namespace = m->mdt_namespace = NULL;
5913 mdt_seq_fini(env, m);
5915 mdt_fld_fini(env, m);
5917 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5920 server_put_mount(dev, true);
5924 /* For interoperability, the left element is old parameter, the right one
5925 * is the new version of the parameter, if some parameter is deprecated,
5926 * the new version should be set as NULL. */
5927 static struct cfg_interop_param mdt_interop_param[] = {
5928 { "mdt.group_upcall", NULL },
5929 { "mdt.quota_type", NULL },
5930 { "mdd.quota_type", NULL },
5931 { "mdt.som", NULL },
5932 { "mdt.rootsquash", "mdt.root_squash" },
5933 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5937 /* used by MGS to process specific configurations */
5938 static int mdt_process_config(const struct lu_env *env,
5939 struct lu_device *d, struct lustre_cfg *cfg)
5941 struct mdt_device *m = mdt_dev(d);
5942 struct md_device *md_next = m->mdt_child;
5943 struct lu_device *next = md2lu_dev(md_next);
5947 switch (cfg->lcfg_command) {
5949 struct obd_device *obd = d->ld_obd;
5950 /* For interoperability */
5951 struct cfg_interop_param *ptr = NULL;
5952 struct lustre_cfg *old_cfg = NULL;
5956 param = lustre_cfg_string(cfg, 1);
5957 if (param == NULL) {
5958 CERROR("param is empty\n");
5963 ptr = class_find_old_param(param, mdt_interop_param);
5965 if (ptr->new_param == NULL) {
5967 CWARN("For interoperability, skip this %s."
5968 " It is obsolete.\n", ptr->old_param);
5972 CWARN("Found old param %s, changed it to %s.\n",
5973 ptr->old_param, ptr->new_param);
5976 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5983 count = class_modify_config(cfg, PARAM_MDT,
5984 &obd->obd_kset.kobj);
5986 struct coordinator *cdt = &m->mdt_coordinator;
5988 /* is it an HSM var ? */
5989 count = class_modify_config(cfg, PARAM_HSM,
5990 &cdt->cdt_hsm_kobj);
5992 /* we don't understand; pass it on */
5993 rc = next->ld_ops->ldo_process_config(env, next,
5996 rc = count > 0 ? 0 : count;
5998 rc = count > 0 ? 0 : count;
6002 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
6003 cfg->lcfg_buflens));
6007 /* others are passed further */
6008 rc = next->ld_ops->ldo_process_config(env, next, cfg);
6014 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
6015 const struct lu_object_header *hdr,
6016 struct lu_device *d)
6018 struct mdt_object *mo;
6022 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
6024 struct lu_object *o;
6025 struct lu_object_header *h;
6028 h = &mo->mot_header;
6029 lu_object_header_init(h);
6030 lu_object_init(o, h, d);
6031 lu_object_add_top(h, o);
6032 o->lo_ops = &mdt_obj_ops;
6033 spin_lock_init(&mo->mot_write_lock);
6034 mutex_init(&mo->mot_som_mutex);
6035 mutex_init(&mo->mot_lov_mutex);
6036 init_rwsem(&mo->mot_dom_sem);
6037 init_rwsem(&mo->mot_open_sem);
6038 atomic_set(&mo->mot_open_count, 0);
6039 mo->mot_restripe_offset = 0;
6040 INIT_LIST_HEAD(&mo->mot_restripe_linkage);
6046 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
6047 const struct lu_object_conf *unused)
6049 struct mdt_device *d = mdt_dev(o->lo_dev);
6050 struct lu_device *under;
6051 struct lu_object *below;
6055 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
6056 PFID(lu_object_fid(o)));
6058 under = &d->mdt_child->md_lu_dev;
6059 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
6060 if (below != NULL) {
6061 lu_object_add(o, below);
6068 static void mdt_object_free_rcu(struct rcu_head *head)
6070 struct mdt_object *mo = container_of(head, struct mdt_object,
6071 mot_header.loh_rcu);
6073 kmem_cache_free(mdt_object_kmem, mo);
6076 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
6078 struct mdt_object *mo = mdt_obj(o);
6079 struct lu_object_header *h;
6083 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
6084 PFID(lu_object_fid(o)));
6086 LASSERT(atomic_read(&mo->mot_open_count) == 0);
6087 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
6090 lu_object_header_fini(h);
6091 OBD_FREE_PRE(mo, sizeof(*mo), "slab-freed");
6092 call_rcu(&mo->mot_header.loh_rcu, mdt_object_free_rcu);
6097 static int mdt_object_print(const struct lu_env *env, void *cookie,
6098 lu_printer_t p, const struct lu_object *o)
6100 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
6102 return (*p)(env, cookie,
6103 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
6104 mdto, mdto->mot_lov_created ? "lov_created" : "",
6105 mdto->mot_cache_attr ? "cache_attr" : "",
6106 mdto->mot_write_count);
6109 static int mdt_prepare(const struct lu_env *env,
6110 struct lu_device *pdev,
6111 struct lu_device *cdev)
6113 struct mdt_device *mdt = mdt_dev(cdev);
6114 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
6115 struct obd_device *obd = cdev->ld_obd;
6122 rc = next->ld_ops->ldo_prepare(env, cdev, next);
6126 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
6130 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
6134 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
6135 /* The LFSCK instance is registered just now, so it must be there when
6136 * register the namespace to such instance. */
6137 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
6139 if (mdt->mdt_seq_site.ss_node_id == 0) {
6140 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
6141 &mdt->mdt_md_root_fid);
6146 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
6148 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
6149 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
6150 LASSERT(obd->obd_no_conn);
6151 spin_lock(&obd->obd_dev_lock);
6152 obd->obd_no_conn = 0;
6153 spin_unlock(&obd->obd_dev_lock);
6155 if (obd->obd_recovering == 0)
6156 mdt_postrecov(env, mdt);
6161 const struct lu_device_operations mdt_lu_ops = {
6162 .ldo_object_alloc = mdt_object_alloc,
6163 .ldo_process_config = mdt_process_config,
6164 .ldo_prepare = mdt_prepare,
6167 static const struct lu_object_operations mdt_obj_ops = {
6168 .loo_object_init = mdt_object_init,
6169 .loo_object_free = mdt_object_free,
6170 .loo_object_print = mdt_object_print
6173 static int mdt_obd_set_info_async(const struct lu_env *env,
6174 struct obd_export *exp,
6175 __u32 keylen, void *key,
6176 __u32 vallen, void *val,
6177 struct ptlrpc_request_set *set)
6183 if (KEY_IS(KEY_SPTLRPC_CONF)) {
6184 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
6191 static inline void mdt_enable_slc(struct mdt_device *mdt)
6193 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_NEVER)
6194 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_BLOCKING;
6197 static inline void mdt_disable_slc(struct mdt_device *mdt)
6199 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING)
6200 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_NEVER;
6204 * Match client and server connection feature flags.
6206 * Compute the compatibility flags for a connection request based on
6207 * features mutually supported by client and server.
6209 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
6210 * must not be updated here, otherwise a partially initialized value may
6211 * be exposed. After the connection request is successfully processed,
6212 * the top-level MDT connect request handler atomically updates the export
6213 * connect flags from the obd_connect_data::ocd_connect_flags field of the
6214 * reply. \see mdt_connect().
6216 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
6217 * full struct obd_connect_data. So care must be taken when accessing fields
6218 * that are not present in struct obd_connect_data_v1. See LU-16.
6220 * \param exp the obd_export associated with this client/target pair
6221 * \param mdt the target device for the connection
6222 * \param data stores data for this connect request
6225 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
6226 * \retval -EBADE client and server feature requirements are incompatible
6228 static int mdt_connect_internal(const struct lu_env *env,
6229 struct obd_export *exp,
6230 struct mdt_device *mdt,
6231 struct obd_connect_data *data, bool reconnect)
6233 const char *obd_name = mdt_obd_name(mdt);
6234 LASSERT(data != NULL);
6236 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
6238 if (mdt->mdt_bottom->dd_rdonly &&
6239 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6240 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
6243 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
6244 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
6246 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
6248 if (!mdt->mdt_opts.mo_acl)
6249 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
6251 if (!mdt->mdt_opts.mo_user_xattr)
6252 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
6254 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
6255 data->ocd_brw_size = min(data->ocd_brw_size,
6257 if (data->ocd_brw_size == 0) {
6258 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
6259 "ocd_version: %x ocd_grant: %d ocd_index: %u "
6260 "ocd_brw_size unexpectedly zero, network data "
6261 "corruption? Refusing to connect this client\n",
6262 obd_name, exp->exp_client_uuid.uuid,
6263 exp, data->ocd_connect_flags, data->ocd_version,
6264 data->ocd_grant, data->ocd_index);
6269 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
6270 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
6272 /* client is reporting its page size, for future use */
6273 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
6274 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
6275 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
6276 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
6277 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
6278 /* ocd_grant_tax_kb is in 1K byte blocks */
6279 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
6280 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
6283 /* Save connect_data we have so far because tgt_grant_connect()
6284 * uses it to calculate grant, and we want to save the client
6285 * version before it is overwritten by LUSTRE_VERSION_CODE. */
6286 exp->exp_connect_data = *data;
6287 if (OCD_HAS_FLAG(data, GRANT))
6288 tgt_grant_connect(env, exp, data, !reconnect);
6290 if (OCD_HAS_FLAG(data, MAXBYTES))
6291 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
6293 /* NB: Disregard the rule against updating
6294 * exp_connect_data.ocd_connect_flags in this case, since
6295 * tgt_client_new() needs to know if this is a lightweight
6296 * connection, and it is safe to expose this flag before
6297 * connection processing completes. */
6298 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
6299 spin_lock(&exp->exp_lock);
6300 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
6301 spin_unlock(&exp->exp_lock);
6304 data->ocd_version = LUSTRE_VERSION_CODE;
6306 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
6307 CWARN("%s: MDS requires FID support, but client not\n",
6312 if (OCD_HAS_FLAG(data, PINGLESS)) {
6313 if (ptlrpc_pinger_suppress_pings()) {
6314 spin_lock(&exp->exp_obd->obd_dev_lock);
6315 list_del_init(&exp->exp_obd_chain_timed);
6316 spin_unlock(&exp->exp_obd->obd_dev_lock);
6318 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
6322 data->ocd_max_easize = mdt->mdt_max_ea_size;
6324 /* NB: Disregard the rule against updating
6325 * exp_connect_data.ocd_connect_flags in this case, since
6326 * tgt_client_new() needs to know if this is client supports
6327 * multiple modify RPCs, and it is safe to expose this flag before
6328 * connection processing completes. */
6329 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6330 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6331 spin_lock(&exp->exp_lock);
6332 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6333 spin_unlock(&exp->exp_lock);
6336 if (OCD_HAS_FLAG(data, CKSUM)) {
6337 __u32 cksum_types = data->ocd_cksum_types;
6339 tgt_mask_cksum_types(&mdt->mdt_lut, &data->ocd_cksum_types);
6341 if (unlikely(data->ocd_cksum_types == 0)) {
6342 CERROR("%s: Connect with checksum support but no "
6343 "ocd_cksum_types is set\n",
6344 exp->exp_obd->obd_name);
6348 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
6349 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
6350 cksum_types, data->ocd_cksum_types);
6352 /* This client does not support OBD_CONNECT_CKSUM
6353 * fall back to CRC32 */
6354 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
6355 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
6356 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6359 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6360 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6361 atomic_inc(&mdt->mdt_mds_mds_conns);
6362 mdt_enable_slc(mdt);
6365 if (!mdt->mdt_lut.lut_dt_conf.ddp_has_lseek_data_hole)
6366 data->ocd_connect_flags2 &= ~OBD_CONNECT2_LSEEK;
6371 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
6372 struct mdt_thread_info *info,
6373 struct mdt_file_data *mfd)
6375 struct lu_context ses;
6379 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
6384 lu_context_enter(&ses);
6386 mdt_ucred(info)->uc_valid = UCRED_OLD;
6387 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
6389 lu_context_exit(&ses);
6390 lu_context_fini(&ses);
6396 static int mdt_export_cleanup(struct obd_export *exp)
6398 LIST_HEAD(closing_list);
6399 struct mdt_export_data *med = &exp->exp_mdt_data;
6400 struct obd_device *obd = exp->exp_obd;
6401 struct mdt_device *mdt;
6402 struct mdt_thread_info *info;
6404 struct mdt_file_data *mfd, *n;
6408 spin_lock(&med->med_open_lock);
6409 while (!list_empty(&med->med_open_head)) {
6410 struct list_head *tmp = med->med_open_head.next;
6411 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
6413 /* Remove mfd handle so it can't be found again.
6414 * We are consuming the mfd_list reference here. */
6415 class_handle_unhash(&mfd->mfd_open_handle);
6416 list_move_tail(&mfd->mfd_list, &closing_list);
6418 spin_unlock(&med->med_open_lock);
6419 mdt = mdt_dev(obd->obd_lu_dev);
6420 LASSERT(mdt != NULL);
6422 rc = lu_env_init(&env, LCT_MD_THREAD);
6426 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6427 LASSERT(info != NULL);
6428 memset(info, 0, sizeof *info);
6429 info->mti_env = &env;
6430 info->mti_mdt = mdt;
6431 info->mti_exp = exp;
6433 if (!list_empty(&closing_list)) {
6434 struct md_attr *ma = &info->mti_attr;
6436 /* Close any open files (which may also cause orphan
6438 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
6439 list_del_init(&mfd->mfd_list);
6440 ma->ma_need = ma->ma_valid = 0;
6442 /* This file is being closed due to an eviction, it
6443 * could have been modified and now dirty regarding to
6444 * HSM archive, check this!
6445 * The logic here is to mark a file dirty if there's a
6446 * chance it was dirtied before the client was evicted,
6447 * so that we don't have to wait for a release attempt
6448 * before finding out the file was actually dirty and
6449 * fail the release. Aggressively marking it dirty here
6450 * will cause the policy engine to attempt to
6451 * re-archive it; when rearchiving, we can compare the
6452 * current version to the HSM data_version and make the
6453 * archive request into a noop if it's not actually
6456 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
6457 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
6459 /* Don't unlink orphan on failover umount, LU-184 */
6460 if (exp->exp_flags & OBD_OPT_FAILOVER) {
6461 ma->ma_valid = MA_FLAGS;
6462 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
6464 ma->ma_valid |= MA_FORCE_LOG;
6465 mdt_mfd_close(info, mfd);
6468 info->mti_mdt = NULL;
6469 /* cleanup client slot early */
6470 /* Do not erase record for recoverable client. */
6471 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
6472 tgt_client_del(&env, exp);
6478 static int mdt_obd_disconnect(struct obd_export *exp)
6485 class_export_get(exp);
6487 if (!(exp->exp_flags & OBD_OPT_FORCE))
6488 tgt_grant_sanity_check(exp->exp_obd, __func__);
6490 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
6491 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
6492 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
6494 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
6495 mdt_disable_slc(mdt);
6498 rc = server_disconnect_export(exp);
6500 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
6502 tgt_grant_discard(exp);
6504 rc = mdt_export_cleanup(exp);
6505 nodemap_del_member(exp);
6506 class_export_put(exp);
6510 /* mds_connect copy */
6511 static int mdt_obd_connect(const struct lu_env *env,
6512 struct obd_export **exp, struct obd_device *obd,
6513 struct obd_uuid *cluuid,
6514 struct obd_connect_data *data,
6517 struct obd_export *lexp;
6518 struct lustre_handle conn = { 0 };
6519 struct mdt_device *mdt;
6521 lnet_nid_t *client_nid = localdata;
6524 LASSERT(env != NULL);
6525 LASSERT(data != NULL);
6527 if (!exp || !obd || !cluuid)
6530 mdt = mdt_dev(obd->obd_lu_dev);
6533 * first, check whether the stack is ready to handle requests
6534 * XXX: probably not very appropriate method is used now
6535 * at some point we should find a better one
6537 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
6538 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
6539 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
6540 rc = obd_get_info(env, mdt->mdt_child_exp,
6541 sizeof(KEY_OSP_CONNECTED),
6542 KEY_OSP_CONNECTED, NULL, NULL);
6545 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
6548 rc = class_connect(&conn, obd, cluuid);
6552 lexp = class_conn2export(&conn);
6553 LASSERT(lexp != NULL);
6555 rc = nodemap_add_member(*client_nid, lexp);
6556 if (rc != 0 && rc != -EEXIST)
6559 rc = mdt_connect_internal(env, lexp, mdt, data, false);
6561 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
6564 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
6565 rc = tgt_client_new(env, lexp);
6567 mdt_export_stats_init(obd, lexp, localdata);
6571 class_disconnect(lexp);
6572 nodemap_del_member(lexp);
6576 /* Because we do not want this export to be evicted by pinger,
6577 * let's not add this export to the timed chain list. */
6578 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
6579 spin_lock(&lexp->exp_obd->obd_dev_lock);
6580 list_del_init(&lexp->exp_obd_chain_timed);
6581 spin_unlock(&lexp->exp_obd->obd_dev_lock);
6588 static int mdt_obd_reconnect(const struct lu_env *env,
6589 struct obd_export *exp, struct obd_device *obd,
6590 struct obd_uuid *cluuid,
6591 struct obd_connect_data *data,
6594 lnet_nid_t *client_nid = localdata;
6598 if (exp == NULL || obd == NULL || cluuid == NULL)
6601 rc = nodemap_add_member(*client_nid, exp);
6602 if (rc != 0 && rc != -EEXIST)
6605 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6608 mdt_export_stats_init(obd, exp, localdata);
6610 nodemap_del_member(exp);
6615 /* FIXME: Can we avoid using these two interfaces? */
6616 static int mdt_init_export(struct obd_export *exp)
6618 struct mdt_export_data *med = &exp->exp_mdt_data;
6622 INIT_LIST_HEAD(&med->med_open_head);
6623 spin_lock_init(&med->med_open_lock);
6624 spin_lock(&exp->exp_lock);
6625 exp->exp_connecting = 1;
6626 spin_unlock(&exp->exp_lock);
6628 OBD_ALLOC(exp->exp_used_slots,
6629 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6630 if (exp->exp_used_slots == NULL)
6633 /* self-export doesn't need client data and ldlm initialization */
6634 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6635 &exp->exp_client_uuid)))
6638 rc = tgt_client_alloc(exp);
6642 rc = ldlm_init_export(exp);
6649 tgt_client_free(exp);
6651 OBD_FREE(exp->exp_used_slots,
6652 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6653 exp->exp_used_slots = NULL;
6655 CERROR("%s: Failed to initialize export: rc = %d\n",
6656 exp->exp_obd->obd_name, rc);
6660 static int mdt_destroy_export(struct obd_export *exp)
6664 target_destroy_export(exp);
6665 if (exp->exp_used_slots)
6666 OBD_FREE(exp->exp_used_slots,
6667 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6669 /* destroy can be called from failed obd_setup, so
6670 * checking uuid is safer than obd_self_export */
6671 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6672 &exp->exp_client_uuid)))
6675 ldlm_destroy_export(exp);
6676 tgt_client_free(exp);
6678 LASSERT(list_empty(&exp->exp_outstanding_replies));
6679 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6682 * discard grants once we're sure no more
6683 * interaction with the client is possible
6685 tgt_grant_discard(exp);
6686 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6687 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6689 if (!(exp->exp_flags & OBD_OPT_FORCE))
6690 tgt_grant_sanity_check(exp->exp_obd, __func__);
6695 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6696 struct linkea_data *ldata)
6700 LASSERT(ldata->ld_buf->lb_buf != NULL);
6702 if (!mdt_object_exists(mdt_obj))
6705 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6706 ldata->ld_buf, XATTR_NAME_LINK);
6707 if (rc == -ERANGE) {
6708 /* Buf was too small, figure out what we need. */
6709 lu_buf_free(ldata->ld_buf);
6710 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6711 ldata->ld_buf, XATTR_NAME_LINK);
6714 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6715 if (ldata->ld_buf->lb_buf == NULL)
6717 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6718 ldata->ld_buf, XATTR_NAME_LINK);
6723 return linkea_init_with_rec(ldata);
6727 * Given an MDT object, try to look up the full path to the object.
6728 * Part of the MDT layer implementation of lfs fid2path.
6730 * \param[in] info Per-thread common data shared by MDT level handlers.
6731 * \param[in] obj Object to do path lookup of
6732 * \param[in,out] fp User-provided struct to store path information
6733 * \param[in] root_fid Root FID of current path should reach
6735 * \retval 0 Lookup successful, path information stored in fp
6736 * \retval -EAGAIN Lookup failed, usually because object is being moved
6737 * \retval negative errno if there was a problem
6739 static int mdt_path_current(struct mdt_thread_info *info,
6740 struct mdt_object *obj,
6741 struct getinfo_fid2path *fp,
6742 struct lu_fid *root_fid)
6744 struct mdt_device *mdt = info->mti_mdt;
6745 struct lu_name *tmpname = &info->mti_name;
6746 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6747 struct lu_buf *buf = &info->mti_big_buf;
6748 struct md_attr *ma = &info->mti_attr;
6749 struct linkea_data ldata = { NULL };
6751 struct mdt_object *mdt_obj;
6752 struct link_ea_header *leh;
6753 struct link_ea_entry *lee;
6760 /* temp buffer for path element, the buffer will be finally freed
6761 * in mdt_thread_info_fini */
6762 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6763 if (buf->lb_buf == NULL)
6767 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6770 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6772 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6773 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6774 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6775 GOTO(out, rc = -ENOENT);
6777 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6779 mdt_object_get(info->mti_env, mdt_obj);
6781 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6782 if (IS_ERR(mdt_obj))
6783 GOTO(out, rc = PTR_ERR(mdt_obj));
6786 if (!mdt_object_exists(mdt_obj)) {
6787 mdt_object_put(info->mti_env, mdt_obj);
6788 GOTO(out, rc = -ENOENT);
6791 if (mdt_object_remote(mdt_obj)) {
6792 mdt_object_put(info->mti_env, mdt_obj);
6793 GOTO(remote_out, rc = -EREMOTE);
6796 rc = mdt_links_read(info, mdt_obj, &ldata);
6798 mdt_object_put(info->mti_env, mdt_obj);
6803 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6804 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6805 /* If set, use link #linkno for path lookup, otherwise use
6806 link #0. Only do this for the final path element. */
6807 if (first && fp->gf_linkno < leh->leh_reccount) {
6809 for (count = 0; count < fp->gf_linkno; count++) {
6810 lee = (struct link_ea_entry *)
6811 ((char *)lee + reclen);
6812 linkea_entry_unpack(lee, &reclen, tmpname,
6815 if (fp->gf_linkno < leh->leh_reccount - 1)
6816 /* indicate to user there are more links */
6820 /* Check if it is slave stripes */
6821 rc = mdt_stripe_get(info, mdt_obj, ma, XATTR_NAME_LMV);
6822 mdt_object_put(info->mti_env, mdt_obj);
6826 if (ma->ma_valid & MA_LMV) {
6827 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
6829 if (!lmv_is_sane2(lmv))
6830 GOTO(out, rc = -EBADF);
6832 /* For slave stripes, get its master */
6833 if (le32_to_cpu(lmv->lmv_magic) == LMV_MAGIC_STRIPE) {
6834 fp->gf_fid = *tmpfid;
6839 /* Pack the name in the end of the buffer */
6840 ptr -= tmpname->ln_namelen;
6841 if (ptr - 1 <= fp->gf_u.gf_path)
6842 GOTO(out, rc = -EOVERFLOW);
6843 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6846 /* keep the last resolved fid to the client, so the
6847 * client will build the left path on another MDT for
6849 fp->gf_fid = *tmpfid;
6854 /* non-zero will be treated as an error */
6858 ptr++; /* skip leading / */
6859 memmove(fp->gf_u.gf_path, ptr,
6860 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6867 * Given an MDT object, use mdt_path_current to get the path.
6868 * Essentially a wrapper to retry mdt_path_current a set number of times
6869 * if -EAGAIN is returned (usually because an object is being moved).
6871 * Part of the MDT layer implementation of lfs fid2path.
6873 * \param[in] info Per-thread common data shared by mdt level handlers.
6874 * \param[in] obj Object to do path lookup of
6875 * \param[in,out] fp User-provided struct for arguments and to store path
6878 * \retval 0 Lookup successful, path information stored in fp
6879 * \retval negative errno if there was a problem
6881 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6882 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6884 struct mdt_device *mdt = info->mti_mdt;
6889 if (fp->gf_pathlen < 3)
6892 if (root_fid == NULL)
6893 root_fid = &mdt->mdt_md_root_fid;
6895 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6896 fp->gf_u.gf_path[0] = '\0';
6900 /* Retry multiple times in case file is being moved */
6901 while (tries-- && rc == -EAGAIN)
6902 rc = mdt_path_current(info, obj, fp, root_fid);
6908 * Get the full path of the provided FID, as of changelog record recno.
6910 * This checks sanity and looks up object for user provided FID
6911 * before calling the actual path lookup code.
6913 * Part of the MDT layer implementation of lfs fid2path.
6915 * \param[in] info Per-thread common data shared by mdt level handlers.
6916 * \param[in,out] fp User-provided struct for arguments and to store path
6919 * \retval 0 Lookup successful, path information and recno stored in fp
6920 * \retval -ENOENT, object does not exist
6921 * \retval negative errno if there was a problem
6923 static int mdt_fid2path(struct mdt_thread_info *info,
6924 struct lu_fid *root_fid,
6925 struct getinfo_fid2path *fp)
6927 struct mdt_device *mdt = info->mti_mdt;
6928 struct mdt_object *obj;
6932 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6933 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6935 if (!fid_is_sane(&fp->gf_fid))
6938 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6939 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6940 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6941 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6945 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6948 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6949 PFID(&fp->gf_fid), rc);
6953 if (mdt_object_remote(obj))
6955 else if (!mdt_object_exists(obj))
6961 mdt_object_put(info->mti_env, obj);
6962 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6963 PFID(&fp->gf_fid), rc);
6967 rc = mdt_path(info, obj, fp, root_fid);
6969 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6970 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6971 fp->gf_recno, fp->gf_linkno);
6973 mdt_object_put(info->mti_env, obj);
6978 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6979 void *val, int vallen)
6981 struct getinfo_fid2path *fpout, *fpin;
6982 struct lu_fid *root_fid = NULL;
6985 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6988 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6989 lustre_swab_fid2path(fpin);
6991 memcpy(fpout, fpin, sizeof(*fpin));
6992 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6995 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6996 sizeof(struct lu_fid)) {
6997 /* client sent its root FID, which is normally fileset FID */
6998 root_fid = fpin->gf_u.gf_root_fid;
6999 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
7000 lustre_swab_lu_fid(root_fid);
7002 if (root_fid != NULL && !fid_is_sane(root_fid))
7006 rc = mdt_fid2path(info, root_fid, fpout);
7010 int mdt_get_info(struct tgt_session_info *tsi)
7020 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
7022 CDEBUG(D_IOCTL, "No GETINFO key\n");
7023 RETURN(err_serious(-EFAULT));
7025 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
7028 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
7029 if (vallen == NULL) {
7030 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
7031 tgt_name(tsi->tsi_tgt));
7032 RETURN(err_serious(-EFAULT));
7035 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
7037 rc = req_capsule_server_pack(tsi->tsi_pill);
7039 RETURN(err_serious(rc));
7041 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
7042 if (valout == NULL) {
7043 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
7044 tgt_name(tsi->tsi_tgt));
7045 RETURN(err_serious(-EFAULT));
7048 if (KEY_IS(KEY_FID2PATH)) {
7049 struct mdt_thread_info *info = tsi2mdt_info(tsi);
7051 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
7052 mdt_thread_info_fini(info);
7059 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
7061 struct obd_ioctl_data *data = karg;
7064 struct mdt_object *obj;
7065 struct mdt_lock_handle *lh;
7069 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
7070 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
7073 fid = (struct lu_fid *)data->ioc_inlbuf1;
7075 if (!fid_is_sane(fid))
7078 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
7080 lh = &mti->mti_lh[MDT_LH_PARENT];
7081 mdt_lock_reg_init(lh, LCK_CR);
7083 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
7085 RETURN(PTR_ERR(obj));
7087 if (mdt_object_remote(obj)) {
7090 * before calling version get the correct MDS should be
7091 * fid, this is error to find remote object here
7093 CERROR("nonlocal object "DFID"\n", PFID(fid));
7094 } else if (!mdt_object_exists(obj)) {
7095 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
7098 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
7099 *(__u64 *)data->ioc_inlbuf2 = version;
7102 mdt_object_unlock_put(mti, obj, lh, 1);
7106 /* ioctls on obd dev */
7107 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
7108 void *karg, void __user *uarg)
7111 struct obd_device *obd = exp->exp_obd;
7112 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
7113 struct dt_device *dt = mdt->mdt_bottom;
7117 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
7118 rc = lu_env_init(&env, LCT_MD_THREAD);
7124 rc = mdt_device_sync(&env, mdt);
7126 case OBD_IOC_SET_READONLY:
7127 rc = dt_sync(&env, dt);
7129 rc = dt_ro(&env, dt);
7131 case OBD_IOC_ABORT_RECOVERY: {
7132 struct obd_ioctl_data *data = karg;
7134 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
7135 if (data->ioc_type & OBD_FLG_ABORT_RECOV_MDT)
7136 obd->obd_abort_recov_mdt = 1;
7137 else /* if (data->ioc_type & OBD_FLG_ABORT_RECOV_OST) */
7138 /* lctl didn't set OBD_FLG_ABORT_RECOV_OST < 2.13.57 */
7139 obd->obd_abort_recovery = 1;
7141 target_stop_recovery_thread(obd);
7145 case OBD_IOC_CHANGELOG_REG:
7146 case OBD_IOC_CHANGELOG_DEREG:
7147 case OBD_IOC_CHANGELOG_CLEAR:
7148 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
7152 case OBD_IOC_START_LFSCK: {
7153 struct md_device *next = mdt->mdt_child;
7154 struct obd_ioctl_data *data = karg;
7155 struct lfsck_start_param lsp;
7157 if (unlikely(data == NULL)) {
7162 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
7163 lsp.lsp_index_valid = 0;
7164 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
7167 case OBD_IOC_STOP_LFSCK: {
7168 struct md_device *next = mdt->mdt_child;
7169 struct obd_ioctl_data *data = karg;
7170 struct lfsck_stop stop;
7172 stop.ls_status = LS_STOPPED;
7173 /* Old lfsck utils may pass NULL @stop. */
7174 if (data->ioc_inlbuf1 == NULL)
7178 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
7180 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
7183 case OBD_IOC_QUERY_LFSCK: {
7184 struct md_device *next = mdt->mdt_child;
7185 struct obd_ioctl_data *data = karg;
7187 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
7191 case OBD_IOC_GET_OBJ_VERSION: {
7192 struct mdt_thread_info *mti;
7193 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7194 memset(mti, 0, sizeof *mti);
7195 mti->mti_env = &env;
7199 rc = mdt_ioc_version_get(mti, karg);
7202 case OBD_IOC_CATLOGLIST: {
7203 struct mdt_thread_info *mti;
7205 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7206 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
7207 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
7208 &mti->mti_tmp_fid1);
7213 CERROR("%s: Not supported cmd = %d, rc = %d\n",
7214 mdt_obd_name(mdt), cmd, rc);
7221 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
7223 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
7227 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
7228 struct lfsck_start_param lsp;
7230 lsp.lsp_start = NULL;
7231 lsp.lsp_index_valid = 0;
7232 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
7233 OBD_IOC_START_LFSCK,
7235 if (rc != 0 && rc != -EALREADY)
7236 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
7237 mdt_obd_name(mdt), rc);
7240 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
7244 static int mdt_obd_postrecov(struct obd_device *obd)
7249 rc = lu_env_init(&env, LCT_MD_THREAD);
7252 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
7257 static const struct obd_ops mdt_obd_device_ops = {
7258 .o_owner = THIS_MODULE,
7259 .o_set_info_async = mdt_obd_set_info_async,
7260 .o_connect = mdt_obd_connect,
7261 .o_reconnect = mdt_obd_reconnect,
7262 .o_disconnect = mdt_obd_disconnect,
7263 .o_init_export = mdt_init_export,
7264 .o_destroy_export = mdt_destroy_export,
7265 .o_iocontrol = mdt_iocontrol,
7266 .o_postrecov = mdt_obd_postrecov,
7267 /* Data-on-MDT IO methods */
7268 .o_preprw = mdt_obd_preprw,
7269 .o_commitrw = mdt_obd_commitrw,
7272 static struct lu_device* mdt_device_fini(const struct lu_env *env,
7273 struct lu_device *d)
7275 struct mdt_device *m = mdt_dev(d);
7282 static struct lu_device *mdt_device_free(const struct lu_env *env,
7283 struct lu_device *d)
7285 struct mdt_device *m = mdt_dev(d);
7288 lu_device_fini(&m->mdt_lu_dev);
7294 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
7295 struct lu_device_type *t,
7296 struct lustre_cfg *cfg)
7298 struct lu_device *l;
7299 struct mdt_device *m;
7306 rc = mdt_init0(env, m, t, cfg);
7308 mdt_device_free(env, l);
7313 l = ERR_PTR(-ENOMEM);
7317 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
7318 LU_KEY_INIT(mdt, struct mdt_thread_info);
7320 static void mdt_key_fini(const struct lu_context *ctx,
7321 struct lu_context_key *key, void* data)
7323 struct mdt_thread_info *info = data;
7325 if (info->mti_big_lmm) {
7326 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
7327 info->mti_big_lmm = NULL;
7328 info->mti_big_lmmsize = 0;
7331 if (info->mti_big_acl) {
7332 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
7333 info->mti_big_acl = NULL;
7334 info->mti_big_aclsize = 0;
7340 /* context key: mdt_thread_key */
7341 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
7343 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
7345 return lu_ucred(info->mti_env);
7348 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
7350 return lu_ucred_check(info->mti_env);
7354 * Enable/disable COS (Commit On Sharing).
7356 * Set/Clear the COS flag in mdt options.
7358 * \param mdt mdt device
7359 * \param val 0 disables COS, other values enable COS
7361 void mdt_enable_cos(struct mdt_device *mdt, bool val)
7366 mdt->mdt_opts.mo_cos = val;
7367 rc = lu_env_init(&env, LCT_LOCAL);
7368 if (unlikely(rc != 0)) {
7369 CWARN("%s: lu_env initialization failed, cannot "
7370 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
7373 mdt_device_sync(&env, mdt);
7378 * Check COS (Commit On Sharing) status.
7380 * Return COS flag status.
7382 * \param mdt mdt device
7384 int mdt_cos_is_enabled(struct mdt_device *mdt)
7386 return mdt->mdt_opts.mo_cos != 0;
7389 static const struct lu_device_type_operations mdt_device_type_ops = {
7390 .ldto_device_alloc = mdt_device_alloc,
7391 .ldto_device_free = mdt_device_free,
7392 .ldto_device_fini = mdt_device_fini
7395 static struct lu_device_type mdt_device_type = {
7396 .ldt_tags = LU_DEVICE_MD,
7397 .ldt_name = LUSTRE_MDT_NAME,
7398 .ldt_ops = &mdt_device_type_ops,
7399 .ldt_ctx_tags = LCT_MD_THREAD
7402 static int __init mdt_init(void)
7406 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
7407 FID_NOBRACE_LEN + 1);
7408 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
7410 rc = lu_kmem_init(mdt_caches);
7414 rc = mds_mod_init();
7418 rc = class_register_type(&mdt_obd_device_ops, NULL, true,
7419 LUSTRE_MDT_NAME, &mdt_device_type);
7424 lu_kmem_fini(mdt_caches);
7431 static void __exit mdt_exit(void)
7433 class_unregister_type(LUSTRE_MDT_NAME);
7435 lu_kmem_fini(mdt_caches);
7438 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
7439 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
7440 MODULE_VERSION(LUSTRE_VERSION_STRING);
7441 MODULE_LICENSE("GPL");
7443 module_init(mdt_init);
7444 module_exit(mdt_exit);