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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_handler.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Andreas Dilger <adilger@clusterfs.com>
42 * Author: Phil Schwan <phil@clusterfs.com>
43 * Author: Mike Shaver <shaver@clusterfs.com>
44 * Author: Nikita Danilov <nikita@clusterfs.com>
45 * Author: Huang Hua <huanghua@clusterfs.com>
46 * Author: Yury Umanets <umka@clusterfs.com>
49 #define DEBUG_SUBSYSTEM S_MDS
51 #include <linux/module.h>
53 * struct OBD_{ALLOC,FREE}*()
55 #include <obd_support.h>
56 /* struct ptlrpc_request */
57 #include <lustre_net.h>
58 /* struct obd_export */
59 #include <lustre_export.h>
60 /* struct obd_device */
63 #include <dt_object.h>
64 #include <lustre_mds.h>
65 #include <lustre_log.h>
66 #include "mdt_internal.h"
67 #include <lustre_acl.h>
68 #include <lustre_param.h>
69 #include <lustre_quota.h>
70 #include <lustre_lfsck.h>
72 mdl_mode_t mdt_mdl_lock_modes[] = {
73 [LCK_MINMODE] = MDL_MINMODE,
80 [LCK_GROUP] = MDL_GROUP
83 ldlm_mode_t mdt_dlm_lock_modes[] = {
84 [MDL_MINMODE] = LCK_MINMODE,
91 [MDL_GROUP] = LCK_GROUP
94 static struct mdt_device *mdt_dev(struct lu_device *d);
95 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
97 static const struct lu_object_operations mdt_obj_ops;
99 /* Slab for MDT object allocation */
100 static struct kmem_cache *mdt_object_kmem;
102 /* For HSM restore handles */
103 struct kmem_cache *mdt_hsm_cdt_kmem;
105 /* For HSM request handles */
106 struct kmem_cache *mdt_hsm_car_kmem;
108 static struct lu_kmem_descr mdt_caches[] = {
110 .ckd_cache = &mdt_object_kmem,
111 .ckd_name = "mdt_obj",
112 .ckd_size = sizeof(struct mdt_object)
115 .ckd_cache = &mdt_hsm_cdt_kmem,
116 .ckd_name = "mdt_cdt_restore_handle",
117 .ckd_size = sizeof(struct cdt_restore_handle)
120 .ckd_cache = &mdt_hsm_car_kmem,
121 .ckd_name = "mdt_cdt_agent_req",
122 .ckd_size = sizeof(struct cdt_agent_req)
129 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
133 return (rep->lock_policy_res1 & flag);
136 void mdt_clear_disposition(struct mdt_thread_info *info,
137 struct ldlm_reply *rep, int flag)
140 info->mti_opdata &= ~flag;
141 tgt_opdata_clear(info->mti_env, flag);
144 rep->lock_policy_res1 &= ~flag;
147 void mdt_set_disposition(struct mdt_thread_info *info,
148 struct ldlm_reply *rep, int flag)
151 info->mti_opdata |= flag;
152 tgt_opdata_set(info->mti_env, flag);
155 rep->lock_policy_res1 |= flag;
158 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
160 lh->mlh_pdo_hash = 0;
161 lh->mlh_reg_mode = lm;
162 lh->mlh_rreg_mode = lm;
163 lh->mlh_type = MDT_REG_LOCK;
166 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lock_mode,
167 const struct lu_name *lname)
169 lh->mlh_reg_mode = lock_mode;
170 lh->mlh_rreg_mode = lock_mode;
171 lh->mlh_type = MDT_PDO_LOCK;
173 if (lu_name_is_valid(lname)) {
174 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
176 /* XXX Workaround for LU-2856
178 * Zero is a valid return value of full_name_hash, but
179 * several users of mlh_pdo_hash assume a non-zero
180 * hash value. We therefore map zero onto an
181 * arbitrary, but consistent value (1) to avoid
182 * problems further down the road. */
183 if (unlikely(lh->mlh_pdo_hash == 0))
184 lh->mlh_pdo_hash = 1;
186 lh->mlh_pdo_hash = 0;
190 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
191 struct mdt_lock_handle *lh)
197 * Any dir access needs couple of locks:
199 * 1) on part of dir we gonna take lookup/modify;
201 * 2) on whole dir to protect it from concurrent splitting and/or to
202 * flush client's cache for readdir().
204 * so, for a given mode and object this routine decides what lock mode
205 * to use for lock #2:
207 * 1) if caller's gonna lookup in dir then we need to protect dir from
208 * being splitted only - LCK_CR
210 * 2) if caller's gonna modify dir then we need to protect dir from
211 * being splitted and to flush cache - LCK_CW
213 * 3) if caller's gonna modify dir and that dir seems ready for
214 * splitting then we need to protect it from any type of access
215 * (lookup/modify/split) - LCK_EX --bzzz
218 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
219 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
222 * Ask underlaying level its opinion about preferable PDO lock mode
223 * having access type passed as regular lock mode:
225 * - MDL_MINMODE means that lower layer does not want to specify lock
228 * - MDL_NL means that no PDO lock should be taken. This is used in some
229 * cases. Say, for non-splittable directories no need to use PDO locks
232 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
233 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
235 if (mode != MDL_MINMODE) {
236 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
239 * Lower layer does not want to specify locking mode. We do it
240 * our selves. No special protection is needed, just flush
241 * client's cache on modification and allow concurrent
244 switch (lh->mlh_reg_mode) {
246 lh->mlh_pdo_mode = LCK_EX;
249 lh->mlh_pdo_mode = LCK_CR;
252 lh->mlh_pdo_mode = LCK_CW;
255 CERROR("Not expected lock type (0x%x)\n",
256 (int)lh->mlh_reg_mode);
261 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
265 int mdt_getstatus(struct tgt_session_info *tsi)
267 struct mdt_thread_info *info = tsi2mdt_info(tsi);
268 struct mdt_device *mdt = info->mti_mdt;
269 struct mdt_body *repbody;
274 rc = mdt_check_ucred(info);
276 GOTO(out, rc = err_serious(rc));
278 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
279 GOTO(out, rc = err_serious(-ENOMEM));
281 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
282 repbody->fid1 = mdt->mdt_md_root_fid;
283 repbody->valid |= OBD_MD_FLID;
285 if (tsi->tsi_tgt->lut_mds_capa &&
286 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
287 struct mdt_object *root;
288 struct lustre_capa *capa;
290 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
292 GOTO(out, rc = PTR_ERR(root));
294 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
296 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
297 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
299 mdt_object_put(info->mti_env, root);
301 repbody->valid |= OBD_MD_FLMDSCAPA;
305 mdt_thread_info_fini(info);
309 int mdt_statfs(struct tgt_session_info *tsi)
311 struct ptlrpc_request *req = tgt_ses_req(tsi);
312 struct mdt_thread_info *info = tsi2mdt_info(tsi);
313 struct md_device *next = info->mti_mdt->mdt_child;
314 struct ptlrpc_service_part *svcpt;
315 struct obd_statfs *osfs;
320 svcpt = req->rq_rqbd->rqbd_svcpt;
322 /* This will trigger a watchdog timeout */
323 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
324 (MDT_SERVICE_WATCHDOG_FACTOR *
325 at_get(&svcpt->scp_at_estimate)) + 1);
327 rc = mdt_check_ucred(info);
329 GOTO(out, rc = err_serious(rc));
331 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
332 GOTO(out, rc = err_serious(-ENOMEM));
334 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
336 GOTO(out, rc = -EPROTO);
338 /** statfs information are cached in the mdt_device */
339 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
340 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
341 /** statfs data is too old, get up-to-date one */
342 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
345 spin_lock(&info->mti_mdt->mdt_osfs_lock);
346 info->mti_mdt->mdt_osfs = *osfs;
347 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
348 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
350 /** use cached statfs data */
351 spin_lock(&info->mti_mdt->mdt_osfs_lock);
352 *osfs = info->mti_mdt->mdt_osfs;
353 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
357 mdt_counter_incr(req, LPROC_MDT_STATFS);
359 mdt_thread_info_fini(info);
364 * Pack SOM attributes into the reply.
365 * Call under a DLM UPDATE lock.
367 static void mdt_pack_size2body(struct mdt_thread_info *info,
368 struct mdt_object *mo)
371 struct md_attr *ma = &info->mti_attr;
373 LASSERT(ma->ma_attr.la_valid & LA_MODE);
374 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
376 /* Check if Size-on-MDS is supported, if this is a regular file,
377 * if SOM is enabled on the object and if SOM cache exists and valid.
378 * Otherwise do not pack Size-on-MDS attributes to the reply. */
379 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
380 !S_ISREG(ma->ma_attr.la_mode) ||
381 !mdt_object_is_som_enabled(mo) ||
382 !(ma->ma_valid & MA_SOM))
385 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
386 b->size = ma->ma_som->msd_size;
387 b->blocks = ma->ma_som->msd_blocks;
390 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
391 const struct lu_attr *attr, const struct lu_fid *fid)
393 struct md_attr *ma = &info->mti_attr;
395 LASSERT(ma->ma_valid & MA_INODE);
397 b->atime = attr->la_atime;
398 b->mtime = attr->la_mtime;
399 b->ctime = attr->la_ctime;
400 b->mode = attr->la_mode;
401 b->size = attr->la_size;
402 b->blocks = attr->la_blocks;
403 b->uid = attr->la_uid;
404 b->gid = attr->la_gid;
405 b->flags = attr->la_flags;
406 b->nlink = attr->la_nlink;
407 b->rdev = attr->la_rdev;
409 /*XXX should pack the reply body according to lu_valid*/
410 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
411 OBD_MD_FLGID | OBD_MD_FLTYPE |
412 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
413 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
415 if (!S_ISREG(attr->la_mode)) {
416 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
417 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
418 /* means no objects are allocated on osts. */
419 LASSERT(!(ma->ma_valid & MA_LOV));
420 /* just ignore blocks occupied by extend attributes on MDS */
422 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
423 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
424 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
425 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
426 /* A released file stores its size on MDS. */
427 /* But return 1 block for released file, unless tools like tar
428 * will consider it fully sparse. (LU-3864)
430 if (unlikely(b->size == 0))
434 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
439 b->valid |= OBD_MD_FLID;
440 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
441 PFID(fid), b->nlink, b->mode, b->size);
445 mdt_body_reverse_idmap(info, b);
447 if (fid != NULL && (b->valid & OBD_MD_FLSIZE))
448 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
449 PFID(fid), (unsigned long long)b->size);
452 static inline int mdt_body_has_lov(const struct lu_attr *la,
453 const struct mdt_body *body)
455 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
456 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
459 void mdt_client_compatibility(struct mdt_thread_info *info)
461 struct mdt_body *body;
462 struct ptlrpc_request *req = mdt_info_req(info);
463 struct obd_export *exp = req->rq_export;
464 struct md_attr *ma = &info->mti_attr;
465 struct lu_attr *la = &ma->ma_attr;
468 if (exp_connect_layout(exp))
469 /* the client can deal with 16-bit lmm_stripe_count */
472 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
474 if (!mdt_body_has_lov(la, body))
477 /* now we have a reply with a lov for a client not compatible with the
478 * layout lock so we have to clean the layout generation number */
479 if (S_ISREG(la->la_mode))
480 ma->ma_lmm->lmm_layout_gen = 0;
484 static int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
487 const struct lu_env *env = info->mti_env;
491 LASSERT(info->mti_big_lmm_used == 0);
492 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
496 /* big_lmm may need to be grown */
497 if (info->mti_big_lmmsize < rc) {
498 int size = size_roundup_power2(rc);
500 if (info->mti_big_lmmsize > 0) {
501 /* free old buffer */
502 LASSERT(info->mti_big_lmm);
503 OBD_FREE_LARGE(info->mti_big_lmm,
504 info->mti_big_lmmsize);
505 info->mti_big_lmm = NULL;
506 info->mti_big_lmmsize = 0;
509 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
510 if (info->mti_big_lmm == NULL)
512 info->mti_big_lmmsize = size;
514 LASSERT(info->mti_big_lmmsize >= rc);
516 info->mti_buf.lb_buf = info->mti_big_lmm;
517 info->mti_buf.lb_len = info->mti_big_lmmsize;
518 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
523 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
524 struct md_attr *ma, const char *name)
526 struct md_object *next = mdt_object_child(o);
527 struct lu_buf *buf = &info->mti_buf;
530 if (strcmp(name, XATTR_NAME_LOV) == 0) {
531 buf->lb_buf = ma->ma_lmm;
532 buf->lb_len = ma->ma_lmm_size;
533 LASSERT(!(ma->ma_valid & MA_LOV));
534 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
535 buf->lb_buf = ma->ma_lmv;
536 buf->lb_len = ma->ma_lmv_size;
537 LASSERT(!(ma->ma_valid & MA_LMV));
538 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
539 buf->lb_buf = ma->ma_lmv;
540 buf->lb_len = ma->ma_lmv_size;
541 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
546 rc = mo_xattr_get(info->mti_env, next, buf, name);
548 if (strcmp(name, XATTR_NAME_LOV) == 0) {
549 ma->ma_lmm_size = rc;
550 ma->ma_valid |= MA_LOV;
551 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
552 ma->ma_lmv_size = rc;
553 ma->ma_valid |= MA_LMV;
554 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
555 ma->ma_lmv_size = rc;
556 ma->ma_valid |= MA_LMV_DEF;
560 } else if (rc == -ENODATA) {
563 } else if (rc == -ERANGE) {
564 /* Default LMV has fixed size, so it must be able to fit
565 * in the original buffer */
566 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
568 rc = mdt_big_xattr_get(info, o, name);
570 info->mti_big_lmm_used = 1;
571 if (!strcmp(name, XATTR_NAME_LOV)) {
572 ma->ma_valid |= MA_LOV;
573 ma->ma_lmm = info->mti_big_lmm;
574 ma->ma_lmm_size = rc;
575 } else if (!strcmp(name, XATTR_NAME_LMV)) {
576 ma->ma_valid |= MA_LMV;
577 ma->ma_lmv = info->mti_big_lmm;
578 ma->ma_lmv_size = rc;
583 /* update mdt_max_mdsize so all clients
584 * will be aware about that */
585 if (info->mti_mdt->mdt_max_mdsize < rc)
586 info->mti_mdt->mdt_max_mdsize = rc;
594 int mdt_attr_get_pfid(struct mdt_thread_info *info,
595 struct mdt_object *o, struct lu_fid *pfid)
597 struct lu_buf *buf = &info->mti_buf;
598 struct link_ea_header *leh;
599 struct link_ea_entry *lee;
603 buf->lb_buf = info->mti_big_lmm;
604 buf->lb_len = info->mti_big_lmmsize;
605 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
606 buf, XATTR_NAME_LINK);
607 /* ignore errors, MA_PFID won't be set and it is
608 * up to the caller to treat this as an error */
609 if (rc == -ERANGE || buf->lb_len == 0) {
610 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
611 buf->lb_buf = info->mti_big_lmm;
612 buf->lb_len = info->mti_big_lmmsize;
617 if (rc < sizeof(*leh)) {
618 CERROR("short LinkEA on "DFID": rc = %d\n",
619 PFID(mdt_object_fid(o)), rc);
623 leh = (struct link_ea_header *) buf->lb_buf;
624 lee = (struct link_ea_entry *)(leh + 1);
625 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
626 leh->leh_magic = LINK_EA_MAGIC;
627 leh->leh_reccount = __swab32(leh->leh_reccount);
628 leh->leh_len = __swab64(leh->leh_len);
630 if (leh->leh_magic != LINK_EA_MAGIC)
632 if (leh->leh_reccount == 0)
635 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
636 fid_be_to_cpu(pfid, pfid);
641 int mdt_attr_get_complex(struct mdt_thread_info *info,
642 struct mdt_object *o, struct md_attr *ma)
644 const struct lu_env *env = info->mti_env;
645 struct md_object *next = mdt_object_child(o);
646 struct lu_buf *buf = &info->mti_buf;
647 u32 mode = lu_object_attr(&next->mo_lu);
648 int need = ma->ma_need;
654 if (need & MA_INODE) {
655 ma->ma_need = MA_INODE;
656 rc = mo_attr_get(env, next, ma);
659 ma->ma_valid |= MA_INODE;
662 if (need & MA_PFID) {
663 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
665 ma->ma_valid |= MA_PFID;
666 /* ignore this error, parent fid is not mandatory */
670 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
671 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
676 if (need & MA_LMV && S_ISDIR(mode)) {
677 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
682 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
683 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
688 if (need & MA_SOM && S_ISREG(mode)) {
689 buf->lb_buf = info->mti_xattr_buf;
690 buf->lb_len = sizeof(info->mti_xattr_buf);
691 CLASSERT(sizeof(struct som_attrs) <=
692 sizeof(info->mti_xattr_buf));
693 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
694 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
696 ma->ma_valid |= MA_SOM;
697 else if (rc2 < 0 && rc2 != -ENODATA)
701 if (need & MA_HSM && S_ISREG(mode)) {
702 buf->lb_buf = info->mti_xattr_buf;
703 buf->lb_len = sizeof(info->mti_xattr_buf);
704 CLASSERT(sizeof(struct hsm_attrs) <=
705 sizeof(info->mti_xattr_buf));
706 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
707 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
709 ma->ma_valid |= MA_HSM;
710 else if (rc2 < 0 && rc2 != -ENODATA)
714 #ifdef CONFIG_FS_POSIX_ACL
715 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
716 buf->lb_buf = ma->ma_acl;
717 buf->lb_len = ma->ma_acl_size;
718 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
720 ma->ma_acl_size = rc2;
721 ma->ma_valid |= MA_ACL_DEF;
722 } else if (rc2 == -ENODATA) {
731 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
732 rc, ma->ma_valid, ma->ma_lmm);
736 static int mdt_getattr_internal(struct mdt_thread_info *info,
737 struct mdt_object *o, int ma_need)
739 struct md_object *next = mdt_object_child(o);
740 const struct mdt_body *reqbody = info->mti_body;
741 struct ptlrpc_request *req = mdt_info_req(info);
742 struct md_attr *ma = &info->mti_attr;
743 struct lu_attr *la = &ma->ma_attr;
744 struct req_capsule *pill = info->mti_pill;
745 const struct lu_env *env = info->mti_env;
746 struct mdt_body *repbody;
747 struct lu_buf *buffer = &info->mti_buf;
752 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
753 RETURN(err_serious(-ENOMEM));
755 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
759 if (mdt_object_remote(o)) {
760 /* This object is located on remote node.*/
761 /* Return -EIO for old client */
762 if (!mdt_is_dne_client(req->rq_export))
763 GOTO(out, rc = -EIO);
765 repbody->fid1 = *mdt_object_fid(o);
766 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
770 buffer->lb_len = reqbody->eadatasize;
771 if (buffer->lb_len > 0) {
772 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
773 if (buffer->lb_buf == NULL)
774 GOTO(out, rc = -EPROTO);
776 buffer->lb_buf = NULL;
777 ma_need &= ~(MA_LOV | MA_LMV);
778 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
779 mdt_obd_name(info->mti_mdt),
780 req->rq_export->exp_client_uuid.uuid);
783 /* If it is dir object and client require MEA, then we got MEA */
784 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
785 (reqbody->valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
786 /* Assumption: MDT_MD size is enough for lmv size. */
787 ma->ma_lmv = buffer->lb_buf;
788 ma->ma_lmv_size = buffer->lb_len;
789 ma->ma_need = MA_INODE;
790 if (ma->ma_lmv_size > 0) {
791 if (reqbody->valid & OBD_MD_MEA)
792 ma->ma_need |= MA_LMV;
793 else if (reqbody->valid & OBD_MD_DEFAULT_MEA)
794 ma->ma_need |= MA_LMV_DEF;
797 ma->ma_lmm = buffer->lb_buf;
798 ma->ma_lmm_size = buffer->lb_len;
799 ma->ma_need = MA_INODE | MA_HSM;
800 if (ma->ma_lmm_size > 0)
801 ma->ma_need |= MA_LOV;
804 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
805 reqbody->valid & OBD_MD_FLDIREA &&
806 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
807 /* get default stripe info for this dir. */
808 ma->ma_need |= MA_LOV_DEF;
810 ma->ma_need |= ma_need;
811 if (ma->ma_need & MA_SOM)
812 ma->ma_som = &info->mti_u.som.data;
814 rc = mdt_attr_get_complex(info, o, ma);
816 CERROR("%s: getattr error for "DFID": rc = %d\n",
817 mdt_obd_name(info->mti_mdt),
818 PFID(mdt_object_fid(o)), rc);
822 /* if file is released, check if a restore is running */
823 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
824 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
825 repbody->t_state = MS_RESTORE;
826 repbody->valid |= OBD_MD_TSTATE;
829 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
831 /* the Lustre protocol supposes to return default striping
832 * on the user-visible root if explicitly requested */
833 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
834 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
835 struct lu_fid rootfid;
836 struct mdt_object *root;
837 struct mdt_device *mdt = info->mti_mdt;
839 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
842 root = mdt_object_find(env, mdt, &rootfid);
844 RETURN(PTR_ERR(root));
845 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
846 mdt_object_put(info->mti_env, root);
848 CERROR("%s: getattr error for "DFID": rc = %d\n",
849 mdt_obd_name(info->mti_mdt),
850 PFID(mdt_object_fid(o)), rc);
855 if (likely(ma->ma_valid & MA_INODE))
856 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
860 if (mdt_body_has_lov(la, reqbody)) {
861 if (ma->ma_valid & MA_LOV) {
862 LASSERT(ma->ma_lmm_size);
863 mdt_dump_lmm(D_INFO, ma->ma_lmm);
864 repbody->eadatasize = ma->ma_lmm_size;
865 if (S_ISDIR(la->la_mode))
866 repbody->valid |= OBD_MD_FLDIREA;
868 repbody->valid |= OBD_MD_FLEASIZE;
870 if (ma->ma_valid & MA_LMV) {
871 LASSERT(S_ISDIR(la->la_mode));
872 mdt_dump_lmv(D_INFO, ma->ma_lmv);
873 repbody->eadatasize = ma->ma_lmv_size;
874 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
876 if (ma->ma_valid & MA_LMV_DEF) {
877 LASSERT(S_ISDIR(la->la_mode));
878 repbody->eadatasize = ma->ma_lmv_size;
879 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_DEFAULT_MEA);
881 } else if (S_ISLNK(la->la_mode) &&
882 reqbody->valid & OBD_MD_LINKNAME) {
883 buffer->lb_buf = ma->ma_lmm;
884 /* eadatasize from client includes NULL-terminator, so
885 * there is no need to read it */
886 buffer->lb_len = reqbody->eadatasize - 1;
887 rc = mo_readlink(env, next, buffer);
888 if (unlikely(rc <= 0)) {
889 CERROR("%s: readlink failed for "DFID": rc = %d\n",
890 mdt_obd_name(info->mti_mdt),
891 PFID(mdt_object_fid(o)), rc);
894 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
896 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
898 repbody->valid |= OBD_MD_LINKNAME;
899 /* we need to report back size with NULL-terminator
900 * because client expects that */
901 repbody->eadatasize = rc + 1;
902 if (repbody->eadatasize != reqbody->eadatasize)
903 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
904 "on "DFID ", expected %d\n",
905 mdt_obd_name(info->mti_mdt),
906 rc, PFID(mdt_object_fid(o)),
907 reqbody->eadatasize - 1);
909 ((char *)ma->ma_lmm)[rc] = 0;
911 /* If the total CDEBUG() size is larger than a page, it
912 * will print a warning to the console, avoid this by
913 * printing just the last part of the symlink. */
914 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
915 print_limit < rc ? "..." : "", print_limit,
916 (char *)ma->ma_lmm + rc - print_limit, rc);
921 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
922 repbody->max_cookiesize = 0;
923 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
924 repbody->valid |= OBD_MD_FLMODEASIZE;
925 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
926 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
927 repbody->max_cookiesize);
930 if (exp_connect_rmtclient(info->mti_exp) &&
931 reqbody->valid & OBD_MD_FLRMTPERM) {
932 void *buf = req_capsule_server_get(pill, &RMF_ACL);
934 /* mdt_getattr_lock only */
935 rc = mdt_pack_remote_perm(info, o, buf);
937 repbody->valid &= ~OBD_MD_FLRMTPERM;
938 repbody->aclsize = 0;
941 repbody->valid |= OBD_MD_FLRMTPERM;
942 repbody->aclsize = sizeof(struct mdt_remote_perm);
945 #ifdef CONFIG_FS_POSIX_ACL
946 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
947 (reqbody->valid & OBD_MD_FLACL)) {
948 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
949 buffer->lb_len = req_capsule_get_size(pill,
950 &RMF_ACL, RCL_SERVER);
951 if (buffer->lb_len > 0) {
952 rc = mo_xattr_get(env, next, buffer,
953 XATTR_NAME_ACL_ACCESS);
955 if (rc == -ENODATA) {
956 repbody->aclsize = 0;
957 repbody->valid |= OBD_MD_FLACL;
959 } else if (rc == -EOPNOTSUPP) {
962 CERROR("%s: unable to read "DFID
964 mdt_obd_name(info->mti_mdt),
965 PFID(mdt_object_fid(o)), rc);
968 repbody->aclsize = rc;
969 repbody->valid |= OBD_MD_FLACL;
976 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
977 info->mti_mdt->mdt_lut.lut_mds_capa &&
978 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
979 struct lustre_capa *capa;
981 capa = req_capsule_server_get(pill, &RMF_CAPA1);
983 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
984 rc = mo_capa_get(env, next, capa, 0);
987 repbody->valid |= OBD_MD_FLMDSCAPA;
992 mdt_counter_incr(req, LPROC_MDT_GETATTR);
997 static int mdt_renew_capa(struct mdt_thread_info *info)
999 struct mdt_object *obj = info->mti_object;
1000 struct mdt_body *body;
1001 struct lustre_capa *capa, *c;
1005 /* if object doesn't exist, or server has disabled capability,
1006 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
1009 if (!obj || !info->mti_mdt->mdt_lut.lut_oss_capa ||
1010 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
1013 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1014 LASSERT(body != NULL);
1016 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
1019 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
1023 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
1025 body->valid |= OBD_MD_FLOSSCAPA;
1029 int mdt_getattr(struct tgt_session_info *tsi)
1031 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1032 struct mdt_object *obj = info->mti_object;
1033 struct req_capsule *pill = info->mti_pill;
1034 struct mdt_body *reqbody;
1035 struct mdt_body *repbody;
1040 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1043 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
1044 rc = req_capsule_server_pack(pill);
1046 RETURN(err_serious(rc));
1047 rc = mdt_renew_capa(info);
1048 GOTO(out_shrink, rc);
1051 LASSERT(obj != NULL);
1052 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1054 mode = lu_object_attr(&obj->mot_obj);
1056 /* old clients may not report needed easize, use max value then */
1057 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1058 reqbody->eadatasize == 0 ?
1059 info->mti_mdt->mdt_max_mdsize :
1060 reqbody->eadatasize);
1062 rc = req_capsule_server_pack(pill);
1063 if (unlikely(rc != 0))
1064 GOTO(out, rc = err_serious(rc));
1066 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1067 LASSERT(repbody != NULL);
1068 repbody->eadatasize = 0;
1069 repbody->aclsize = 0;
1071 if (reqbody->valid & OBD_MD_FLRMTPERM)
1072 rc = mdt_init_ucred(info, reqbody);
1074 rc = mdt_check_ucred(info);
1076 GOTO(out_shrink, rc);
1078 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1081 * Don't check capability at all, because rename might getattr for
1082 * remote obj, and at that time no capability is available.
1084 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
1085 rc = mdt_getattr_internal(info, obj, 0);
1086 if (reqbody->valid & OBD_MD_FLRMTPERM)
1087 mdt_exit_ucred(info);
1090 mdt_client_compatibility(info);
1091 rc2 = mdt_fix_reply(info);
1095 mdt_thread_info_fini(info);
1099 int mdt_is_subdir(struct tgt_session_info *tsi)
1101 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1102 struct mdt_object *o = info->mti_object;
1103 struct req_capsule *pill = info->mti_pill;
1104 const struct mdt_body *body = info->mti_body;
1105 struct mdt_body *repbody;
1111 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1114 * We save last checked parent fid to @repbody->fid1 for remote
1117 LASSERT(fid_is_sane(&body->fid2));
1118 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
1119 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1120 &body->fid2, &repbody->fid1);
1121 if (rc == 0 || rc == -EREMOTE)
1122 repbody->valid |= OBD_MD_FLID;
1124 mdt_thread_info_fini(info);
1128 int mdt_swap_layouts(struct tgt_session_info *tsi)
1130 struct mdt_thread_info *info;
1131 struct ptlrpc_request *req = tgt_ses_req(tsi);
1132 struct obd_export *exp = req->rq_export;
1133 struct mdt_object *o1, *o2, *o;
1134 struct mdt_lock_handle *lh1, *lh2;
1135 struct mdc_swap_layouts *msl;
1139 /* client does not support layout lock, so layout swaping
1141 * FIXME: there is a problem for old clients which don't support
1142 * layout lock yet. If those clients have already opened the file
1143 * they won't be notified at all so that old layout may still be
1144 * used to do IO. This can be fixed after file release is landed by
1145 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1146 if (!exp_connect_layout(exp))
1147 RETURN(-EOPNOTSUPP);
1149 info = tsi2mdt_info(tsi);
1150 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1151 mdt_set_capainfo(info, 0, &info->mti_body->fid1,
1152 req_capsule_client_get(info->mti_pill,
1155 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1156 mdt_set_capainfo(info, 1, &info->mti_body->fid2,
1157 req_capsule_client_get(info->mti_pill,
1160 o1 = info->mti_object;
1161 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1162 &info->mti_body->fid2);
1164 GOTO(out, rc = PTR_ERR(o));
1166 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1167 GOTO(put, rc = -ENOENT);
1169 rc = lu_fid_cmp(&info->mti_body->fid1, &info->mti_body->fid2);
1170 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1176 /* permission check. Make sure the calling process having permission
1177 * to write both files. */
1178 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1183 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1188 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1190 GOTO(put, rc = -EPROTO);
1192 lh1 = &info->mti_lh[MDT_LH_NEW];
1193 mdt_lock_reg_init(lh1, LCK_EX);
1194 lh2 = &info->mti_lh[MDT_LH_OLD];
1195 mdt_lock_reg_init(lh2, LCK_EX);
1197 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1198 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1202 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1203 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1207 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1208 mdt_object_child(o2), msl->msl_flags);
1211 mdt_object_unlock(info, o2, lh2, rc);
1213 mdt_object_unlock(info, o1, lh1, rc);
1215 mdt_object_put(info->mti_env, o);
1217 mdt_thread_info_fini(info);
1221 static int mdt_raw_lookup(struct mdt_thread_info *info,
1222 struct mdt_object *parent,
1223 const struct lu_name *lname,
1224 struct ldlm_reply *ldlm_rep)
1226 struct md_object *next = mdt_object_child(info->mti_object);
1227 const struct mdt_body *reqbody = info->mti_body;
1228 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1229 struct mdt_body *repbody;
1233 if (reqbody->valid != OBD_MD_FLID)
1236 LASSERT(!info->mti_cross_ref);
1238 /* Only got the fid of this obj by name */
1239 fid_zero(child_fid);
1240 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1243 /* XXX is raw_lookup possible as intent operation? */
1246 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1249 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1251 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1254 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1255 repbody->fid1 = *child_fid;
1256 repbody->valid = OBD_MD_FLID;
1262 * UPDATE lock should be taken against parent, and be release before exit;
1263 * child_bits lock should be taken against child, and be returned back:
1264 * (1)normal request should release the child lock;
1265 * (2)intent request will grant the lock to client.
1267 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1268 struct mdt_lock_handle *lhc,
1270 struct ldlm_reply *ldlm_rep)
1272 struct ptlrpc_request *req = mdt_info_req(info);
1273 struct mdt_body *reqbody = NULL;
1274 struct mdt_object *parent = info->mti_object;
1275 struct mdt_object *child;
1276 struct md_object *next = mdt_object_child(parent);
1277 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1278 struct lu_name *lname = NULL;
1279 struct mdt_lock_handle *lhp = NULL;
1280 struct ldlm_lock *lock;
1281 struct ldlm_res_id *res_id;
1288 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1289 LASSERT(ergo(is_resent,
1290 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1292 LASSERT(parent != NULL);
1294 lname = &info->mti_name;
1295 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1297 if (!info->mti_cross_ref) {
1299 * XXX: Check for anonymous name is for getattr by fid
1300 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1301 * that is the name must contain at least one character and
1302 * the terminating '\0'.
1304 if (!lu_name_is_valid(lname)) {
1305 reqbody = req_capsule_client_get(info->mti_pill,
1307 if (unlikely(reqbody == NULL))
1308 RETURN(err_serious(-EFAULT));
1310 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1311 RETURN(err_serious(-EINVAL));
1313 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1315 PFID(mdt_object_fid(parent)),
1316 PFID(&reqbody->fid2), ldlm_rep);
1318 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1319 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1320 PNAME(lname), ldlm_rep);
1324 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1326 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1327 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1329 "Parent doesn't exist!\n");
1331 } else if (!info->mti_cross_ref) {
1332 LASSERTF(!mdt_object_remote(parent),
1333 "Parent "DFID" is on remote server\n",
1334 PFID(mdt_object_fid(parent)));
1337 if (lu_name_is_valid(lname)) {
1338 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1346 if (info->mti_cross_ref) {
1347 /* Only getattr on the child. Parent is on another node. */
1348 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1350 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1351 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1354 /* Do not take lock for resent case. */
1355 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1356 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1357 lhc->mlh_reg_lh.cookie);
1358 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1359 &lock->l_resource->lr_name));
1360 LDLM_LOCK_PUT(lock);
1363 mdt_lock_handle_init(lhc);
1364 mdt_lock_reg_init(lhc, LCK_PR);
1367 * Object's name is on another MDS, no lookup or layout
1368 * lock is needed here but update lock is.
1370 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1371 MDS_INODELOCK_LAYOUT);
1372 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1374 rc = mdt_object_lock(info, child, lhc, child_bits,
1378 /* Finally, we can get attr for child. */
1379 if (!mdt_object_exists(child)) {
1380 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1382 "remote object doesn't exist.\n");
1383 mdt_object_unlock(info, child, lhc, 1);
1387 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1389 rc = mdt_getattr_internal(info, child, 0);
1390 if (unlikely(rc != 0))
1391 mdt_object_unlock(info, child, lhc, 1);
1396 if (lu_name_is_valid(lname)) {
1397 /* step 1: lock parent only if parent is a directory */
1398 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1399 lhp = &info->mti_lh[MDT_LH_PARENT];
1400 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1401 rc = mdt_object_lock(info, parent, lhp,
1402 MDS_INODELOCK_UPDATE,
1404 if (unlikely(rc != 0))
1408 /* step 2: lookup child's fid by name */
1409 fid_zero(child_fid);
1410 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1415 mdt_set_disposition(info, ldlm_rep,
1417 GOTO(out_parent, rc);
1419 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1421 *child_fid = reqbody->fid2;
1422 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1426 *step 3: find the child object by fid & lock it.
1427 * regardless if it is local or remote.
1429 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1430 * set parent dir fid the same as child fid in getattr by fid case
1431 * we should not lu_object_find() the object again, could lead
1432 * to hung if there is a concurrent unlink destroyed the object.
1434 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1435 mdt_object_get(info->mti_env, parent);
1438 child = mdt_object_find(info->mti_env, info->mti_mdt,
1442 if (unlikely(IS_ERR(child)))
1443 GOTO(out_parent, rc = PTR_ERR(child));
1445 /* Do not take lock for resent case. */
1446 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1447 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1448 lhc->mlh_reg_lh.cookie);
1450 res_id = &lock->l_resource->lr_name;
1451 if (!fid_res_name_eq(mdt_object_fid(child),
1452 &lock->l_resource->lr_name)) {
1453 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1454 &lock->l_resource->lr_name),
1455 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1456 PLDLMRES(lock->l_resource),
1457 PFID(mdt_object_fid(parent)));
1458 CWARN("Although resent, but still not get child lock"
1459 "parent:"DFID" child:"DFID"\n",
1460 PFID(mdt_object_fid(parent)),
1461 PFID(mdt_object_fid(child)));
1462 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1463 LDLM_LOCK_PUT(lock);
1466 LDLM_LOCK_PUT(lock);
1469 bool try_layout = false;
1472 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1473 mdt_lock_handle_init(lhc);
1474 mdt_lock_reg_init(lhc, LCK_PR);
1476 if (!mdt_object_exists(child)) {
1477 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1479 "Object doesn't exist!\n");
1480 GOTO(out_child, rc = -ENOENT);
1483 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1484 mdt_object_exists(child) && !mdt_object_remote(child)) {
1485 struct md_attr *ma = &info->mti_attr;
1488 ma->ma_need = MA_INODE;
1489 rc = mdt_attr_get_complex(info, child, ma);
1490 if (unlikely(rc != 0))
1491 GOTO(out_child, rc);
1493 /* If the file has not been changed for some time, we
1494 * return not only a LOOKUP lock, but also an UPDATE
1495 * lock and this might save us RPC on later STAT. For
1496 * directories, it also let negative dentry cache start
1497 * working for this dir. */
1498 if (ma->ma_valid & MA_INODE &&
1499 ma->ma_attr.la_valid & LA_CTIME &&
1500 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1501 ma->ma_attr.la_ctime < cfs_time_current_sec())
1502 child_bits |= MDS_INODELOCK_UPDATE;
1505 /* layout lock must be granted in a best-effort way
1506 * for IT operations */
1507 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1508 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1509 exp_connect_layout(info->mti_exp) &&
1510 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1511 !mdt_object_remote(child) && ldlm_rep != NULL) {
1512 /* try to grant layout lock for regular file. */
1518 child_bits |= MDS_INODELOCK_LAYOUT;
1519 /* try layout lock, it may fail to be granted due to
1520 * contention at LOOKUP or UPDATE */
1521 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1523 child_bits &= ~MDS_INODELOCK_LAYOUT;
1524 LASSERT(child_bits != 0);
1525 rc = mdt_object_lock(info, child, lhc,
1526 child_bits, MDT_CROSS_LOCK);
1531 rc = mdt_object_lock(info, child, lhc, child_bits,
1534 if (unlikely(rc != 0))
1535 GOTO(out_child, rc);
1538 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1539 /* Get MA_SOM attributes if update lock is given. */
1541 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1542 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1545 /* finally, we can get attr for child. */
1546 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1547 rc = mdt_getattr_internal(info, child, ma_need);
1548 if (unlikely(rc != 0)) {
1549 mdt_object_unlock(info, child, lhc, 1);
1551 /* Debugging code. */
1552 res_id = &lock->l_resource->lr_name;
1553 LDLM_DEBUG(lock, "Returning lock to client");
1554 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1555 &lock->l_resource->lr_name),
1556 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1557 PLDLMRES(lock->l_resource),
1558 PFID(mdt_object_fid(child)));
1559 if (mdt_object_exists(child) && !mdt_object_remote(child))
1560 mdt_pack_size2body(info, child);
1563 LDLM_LOCK_PUT(lock);
1567 mdt_object_put(info->mti_env, child);
1570 mdt_object_unlock(info, parent, lhp, 1);
1574 /* normal handler: should release the child lock */
1575 int mdt_getattr_name(struct tgt_session_info *tsi)
1577 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1578 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1579 struct mdt_body *reqbody;
1580 struct mdt_body *repbody;
1584 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1585 LASSERT(reqbody != NULL);
1586 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1587 LASSERT(repbody != NULL);
1589 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1590 repbody->eadatasize = 0;
1591 repbody->aclsize = 0;
1593 rc = mdt_init_ucred(info, reqbody);
1595 GOTO(out_shrink, rc);
1597 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1598 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1599 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1600 lhc->mlh_reg_lh.cookie = 0;
1602 mdt_exit_ucred(info);
1605 mdt_client_compatibility(info);
1606 rc2 = mdt_fix_reply(info);
1609 mdt_thread_info_fini(info);
1613 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1614 void *karg, void *uarg);
1616 int mdt_set_info(struct tgt_session_info *tsi)
1618 struct ptlrpc_request *req = tgt_ses_req(tsi);
1621 int keylen, vallen, rc = 0;
1625 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1627 DEBUG_REQ(D_HA, req, "no set_info key");
1628 RETURN(err_serious(-EFAULT));
1631 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1634 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1636 DEBUG_REQ(D_HA, req, "no set_info val");
1637 RETURN(err_serious(-EFAULT));
1640 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1643 /* Swab any part of val you need to here */
1644 if (KEY_IS(KEY_READ_ONLY)) {
1645 spin_lock(&req->rq_export->exp_lock);
1647 *exp_connect_flags_ptr(req->rq_export) |=
1650 *exp_connect_flags_ptr(req->rq_export) &=
1651 ~OBD_CONNECT_RDONLY;
1652 spin_unlock(&req->rq_export->exp_lock);
1653 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1654 struct changelog_setinfo *cs = val;
1656 if (vallen != sizeof(*cs)) {
1657 CERROR("%s: bad changelog_clear setinfo size %d\n",
1658 tgt_name(tsi->tsi_tgt), vallen);
1661 if (ptlrpc_req_need_swab(req)) {
1662 __swab64s(&cs->cs_recno);
1663 __swab32s(&cs->cs_id);
1666 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1674 int mdt_readpage(struct tgt_session_info *tsi)
1676 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1677 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1678 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1679 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1680 struct mdt_body *repbody;
1686 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1687 RETURN(err_serious(-ENOMEM));
1689 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1690 if (repbody == NULL || reqbody == NULL)
1691 RETURN(err_serious(-EFAULT));
1694 * prepare @rdpg before calling lower layers and transfer itself. Here
1695 * reqbody->size contains offset of where to start to read and
1696 * reqbody->nlink contains number bytes to read.
1698 rdpg->rp_hash = reqbody->size;
1699 if (rdpg->rp_hash != reqbody->size) {
1700 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1701 rdpg->rp_hash, reqbody->size);
1705 rdpg->rp_attrs = reqbody->mode;
1706 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1707 rdpg->rp_attrs |= LUDA_64BITHASH;
1708 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1709 exp_max_brw_size(tsi->tsi_exp));
1710 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1712 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1713 if (rdpg->rp_pages == NULL)
1716 for (i = 0; i < rdpg->rp_npages; ++i) {
1717 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1718 if (rdpg->rp_pages[i] == NULL)
1719 GOTO(free_rdpg, rc = -ENOMEM);
1722 /* call lower layers to fill allocated pages with directory data */
1723 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1725 GOTO(free_rdpg, rc);
1727 /* send pages to client */
1728 rc = tgt_sendpage(tsi, rdpg, rc);
1733 for (i = 0; i < rdpg->rp_npages; i++)
1734 if (rdpg->rp_pages[i] != NULL)
1735 __free_page(rdpg->rp_pages[i]);
1736 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1738 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1744 static int mdt_reint_internal(struct mdt_thread_info *info,
1745 struct mdt_lock_handle *lhc,
1748 struct req_capsule *pill = info->mti_pill;
1749 struct mdt_body *repbody;
1754 rc = mdt_reint_unpack(info, op);
1756 CERROR("Can't unpack reint, rc %d\n", rc);
1757 RETURN(err_serious(rc));
1760 /* for replay (no_create) lmm is not needed, client has it already */
1761 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1762 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1763 info->mti_rr.rr_eadatalen);
1765 /* llog cookies are always 0, the field is kept for compatibility */
1766 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1767 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1769 rc = req_capsule_server_pack(pill);
1771 CERROR("Can't pack response, rc %d\n", rc);
1772 RETURN(err_serious(rc));
1775 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1776 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1778 repbody->eadatasize = 0;
1779 repbody->aclsize = 0;
1782 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1784 /* for replay no cookkie / lmm need, because client have this already */
1785 if (info->mti_spec.no_create)
1786 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1787 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1789 rc = mdt_init_ucred_reint(info);
1791 GOTO(out_shrink, rc);
1793 rc = mdt_fix_attr_ucred(info, op);
1795 GOTO(out_ucred, rc = err_serious(rc));
1797 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1798 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1799 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1800 GOTO(out_ucred, rc);
1802 rc = mdt_reint_rec(info, lhc);
1805 mdt_exit_ucred(info);
1807 mdt_client_compatibility(info);
1808 rc2 = mdt_fix_reply(info);
1814 static long mdt_reint_opcode(struct ptlrpc_request *req,
1815 const struct req_format **fmt)
1817 struct mdt_device *mdt;
1818 struct mdt_rec_reint *rec;
1821 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1823 opc = rec->rr_opcode;
1824 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1825 if (opc < REINT_MAX && fmt[opc] != NULL)
1826 req_capsule_extend(&req->rq_pill, fmt[opc]);
1828 mdt = mdt_exp2dev(req->rq_export);
1829 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1830 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1831 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1832 opc = err_serious(-EFAULT);
1835 opc = err_serious(-EFAULT);
1840 int mdt_reint(struct tgt_session_info *tsi)
1844 static const struct req_format *reint_fmts[REINT_MAX] = {
1845 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1846 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1847 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1848 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1849 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1850 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1851 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1852 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1853 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1858 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1860 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1862 * No lock possible here from client to pass it to reint code
1865 rc = mdt_reint_internal(info, NULL, opc);
1866 mdt_thread_info_fini(info);
1871 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1875 /* this should sync the whole device */
1876 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1878 struct dt_device *dt = mdt->mdt_bottom;
1882 rc = dt->dd_ops->dt_sync(env, dt);
1886 /* this should sync this object */
1887 static int mdt_object_sync(struct mdt_thread_info *info)
1889 struct md_object *next;
1893 if (!mdt_object_exists(info->mti_object)) {
1894 CWARN("Non existing object "DFID"!\n",
1895 PFID(mdt_object_fid(info->mti_object)));
1898 next = mdt_object_child(info->mti_object);
1899 rc = mo_object_sync(info->mti_env, next);
1904 int mdt_sync(struct tgt_session_info *tsi)
1906 struct ptlrpc_request *req = tgt_ses_req(tsi);
1907 struct req_capsule *pill = tsi->tsi_pill;
1908 struct mdt_body *body;
1913 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1914 RETURN(err_serious(-ENOMEM));
1916 if (fid_seq(&tsi->tsi_mdt_body->fid1) == 0) {
1917 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1919 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1921 /* sync an object */
1922 rc = mdt_object_sync(info);
1924 const struct lu_fid *fid;
1925 struct lu_attr *la = &info->mti_attr.ma_attr;
1927 info->mti_attr.ma_need = MA_INODE;
1928 info->mti_attr.ma_valid = 0;
1929 rc = mdt_attr_get_complex(info, info->mti_object,
1932 body = req_capsule_server_get(pill,
1934 fid = mdt_object_fid(info->mti_object);
1935 mdt_pack_attr2body(info, body, la, fid);
1938 mdt_thread_info_fini(info);
1941 mdt_counter_incr(req, LPROC_MDT_SYNC);
1947 * Handle quota control requests to consult current usage/limit, but also
1948 * to configure quota enforcement
1950 int mdt_quotactl(struct tgt_session_info *tsi)
1952 struct obd_export *exp = tsi->tsi_exp;
1953 struct req_capsule *pill = tsi->tsi_pill;
1954 struct obd_quotactl *oqctl, *repoqc;
1956 struct mdt_device *mdt = mdt_exp2dev(exp);
1957 struct lu_device *qmt = mdt->mdt_qmt_dev;
1960 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1962 RETURN(err_serious(-EPROTO));
1964 rc = req_capsule_server_pack(pill);
1966 RETURN(err_serious(rc));
1968 switch (oqctl->qc_cmd) {
1970 case LUSTRE_Q_INVALIDATE:
1971 case LUSTRE_Q_FINVALIDATE:
1975 /* deprecated, not used any more */
1976 RETURN(-EOPNOTSUPP);
1977 /* master quotactl */
1983 RETURN(-EOPNOTSUPP);
1984 /* slave quotactl */
1989 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1993 /* map uid/gid for remote client */
1995 if (exp_connect_rmtclient(exp)) {
1996 struct lustre_idmap_table *idmap;
1998 idmap = exp->exp_mdt_data.med_idmap;
2000 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2001 oqctl->qc_cmd != Q_GETINFO))
2004 if (oqctl->qc_type == USRQUOTA)
2005 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2007 else if (oqctl->qc_type == GRPQUOTA)
2008 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2013 if (id == CFS_IDMAP_NOTFOUND) {
2014 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2019 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2021 RETURN(err_serious(-EFAULT));
2023 if (oqctl->qc_id != id)
2024 swap(oqctl->qc_id, id);
2026 switch (oqctl->qc_cmd) {
2032 /* forward quotactl request to QMT */
2033 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2038 /* slave quotactl */
2039 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2044 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2048 if (oqctl->qc_id != id)
2049 swap(oqctl->qc_id, id);
2055 /** clone llog ctxt from child (mdd)
2056 * This allows remote llog (replicator) access.
2057 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2058 * context was originally set up, or we can handle them directly.
2059 * I choose the latter, but that means I need any llog
2060 * contexts set up by child to be accessable by the mdt. So we clone the
2061 * context into our context list here.
2063 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2066 struct md_device *next = mdt->mdt_child;
2067 struct llog_ctxt *ctxt;
2070 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2073 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2074 if (rc || ctxt == NULL) {
2078 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2080 CERROR("Can't set mdt ctxt %d\n", rc);
2085 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2086 struct mdt_device *mdt, int idx)
2088 struct llog_ctxt *ctxt;
2090 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2093 /* Put once for the get we just did, and once for the clone */
2094 llog_ctxt_put(ctxt);
2095 llog_ctxt_put(ctxt);
2100 * sec context handlers
2102 int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2106 rc = mdt_handle_idmap(tsi);
2108 struct ptlrpc_request *req = tgt_ses_req(tsi);
2111 opc = lustre_msg_get_opc(req->rq_reqmsg);
2112 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2113 sptlrpc_svc_ctx_invalidate(req);
2116 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2122 * quota request handlers
2124 int mdt_quota_dqacq(struct tgt_session_info *tsi)
2126 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2127 struct lu_device *qmt = mdt->mdt_qmt_dev;
2132 RETURN(err_serious(-EOPNOTSUPP));
2134 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2138 struct mdt_object *mdt_object_new(const struct lu_env *env,
2139 struct mdt_device *d,
2140 const struct lu_fid *f)
2142 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2143 struct lu_object *o;
2144 struct mdt_object *m;
2147 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2148 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2149 if (unlikely(IS_ERR(o)))
2150 m = (struct mdt_object *)o;
2156 struct mdt_object *mdt_object_find(const struct lu_env *env,
2157 struct mdt_device *d,
2158 const struct lu_fid *f)
2160 struct lu_object *o;
2161 struct mdt_object *m;
2164 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2165 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2166 if (unlikely(IS_ERR(o)))
2167 m = (struct mdt_object *)o;
2175 * Asyncronous commit for mdt device.
2177 * Pass asynchonous commit call down the MDS stack.
2179 * \param env environment
2180 * \param mdt the mdt device
2182 static void mdt_device_commit_async(const struct lu_env *env,
2183 struct mdt_device *mdt)
2185 struct dt_device *dt = mdt->mdt_bottom;
2188 rc = dt->dd_ops->dt_commit_async(env, dt);
2189 if (unlikely(rc != 0))
2190 CWARN("async commit start failed with rc = %d", rc);
2194 * Mark the lock as "synchonous".
2196 * Mark the lock to deffer transaction commit to the unlock time.
2198 * \param lock the lock to mark as "synchonous"
2200 * \see mdt_is_lock_sync
2201 * \see mdt_save_lock
2203 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2205 lock->l_ast_data = (void*)1;
2209 * Check whehter the lock "synchonous" or not.
2211 * \param lock the lock to check
2212 * \retval 1 the lock is "synchonous"
2213 * \retval 0 the lock isn't "synchronous"
2215 * \see mdt_set_lock_sync
2216 * \see mdt_save_lock
2218 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2220 return lock->l_ast_data != NULL;
2224 * Blocking AST for mdt locks.
2226 * Starts transaction commit if in case of COS lock conflict or
2227 * deffers such a commit to the mdt_save_lock.
2229 * \param lock the lock which blocks a request or cancelling lock
2230 * \param desc unused
2231 * \param data unused
2232 * \param flag indicates whether this cancelling or blocking callback
2234 * \see ldlm_blocking_ast_nocheck
2236 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2237 void *data, int flag)
2239 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2240 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2244 if (flag == LDLM_CB_CANCELING)
2246 lock_res_and_lock(lock);
2247 if (lock->l_blocking_ast != mdt_blocking_ast) {
2248 unlock_res_and_lock(lock);
2251 if (mdt_cos_is_enabled(mdt) &&
2252 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2253 lock->l_blocking_lock != NULL &&
2254 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2255 mdt_set_lock_sync(lock);
2257 rc = ldlm_blocking_ast_nocheck(lock);
2259 /* There is no lock conflict if l_blocking_lock == NULL,
2260 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2261 * when the last reference to a local lock was released */
2262 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2265 rc = lu_env_init(&env, LCT_LOCAL);
2266 if (unlikely(rc != 0))
2267 CWARN("lu_env initialization failed with rc = %d,"
2268 "cannot start asynchronous commit\n", rc);
2270 mdt_device_commit_async(&env, mdt);
2276 /* Used for cross-MDT lock */
2277 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2278 void *data, int flag)
2280 struct lustre_handle lockh;
2284 case LDLM_CB_BLOCKING:
2285 ldlm_lock2handle(lock, &lockh);
2286 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2288 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2292 case LDLM_CB_CANCELING:
2293 LDLM_DEBUG(lock, "Revoke remote lock\n");
2301 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2302 struct mdt_object *o, struct lustre_handle *lh,
2303 ldlm_mode_t mode, __u64 ibits)
2305 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2306 ldlm_policy_data_t *policy = &mti->mti_policy;
2310 LASSERT(mdt_object_remote(o));
2312 LASSERT(ibits & MDS_INODELOCK_UPDATE);
2314 memset(einfo, 0, sizeof(*einfo));
2315 einfo->ei_type = LDLM_IBITS;
2316 einfo->ei_mode = mode;
2317 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2318 einfo->ei_cb_cp = ldlm_completion_ast;
2319 einfo->ei_enq_slave = 0;
2321 memset(policy, 0, sizeof(*policy));
2322 policy->l_inodebits.bits = ibits;
2324 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2329 static int mdt_object_lock0(struct mdt_thread_info *info, struct mdt_object *o,
2330 struct mdt_lock_handle *lh, __u64 ibits,
2331 bool nonblock, int locality)
2333 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2334 ldlm_policy_data_t *policy = &info->mti_policy;
2335 struct ldlm_res_id *res_id = &info->mti_res_id;
2340 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2341 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2342 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2343 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2345 if (mdt_object_remote(o)) {
2346 if (locality == MDT_CROSS_LOCK) {
2347 ibits &= ~(MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM |
2348 MDS_INODELOCK_LAYOUT);
2349 ibits |= MDS_INODELOCK_LOOKUP;
2352 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM |
2353 MDS_INODELOCK_LAYOUT)),
2354 "%s: wrong bit "LPX64" for remote obj "DFID"\n",
2355 mdt_obd_name(info->mti_mdt), ibits,
2356 PFID(mdt_object_fid(o)));
2357 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2359 /* No PDO lock on remote object */
2360 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2363 if (lh->mlh_type == MDT_PDO_LOCK) {
2364 /* check for exists after object is locked */
2365 if (mdt_object_exists(o) == 0) {
2366 /* Non-existent object shouldn't have PDO lock */
2369 /* Non-dir object shouldn't have PDO lock */
2370 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2375 memset(policy, 0, sizeof(*policy));
2376 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2378 dlmflags = LDLM_FL_ATOMIC_CB;
2380 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2383 * Take PDO lock on whole directory and build correct @res_id for lock
2384 * on part of directory.
2386 if (lh->mlh_pdo_hash != 0) {
2387 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2388 mdt_lock_pdo_mode(info, o, lh);
2389 if (lh->mlh_pdo_mode != LCK_NL) {
2391 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2392 * is never going to be sent to client and we do not
2393 * want it slowed down due to possible cancels.
2395 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2396 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2397 policy, res_id, dlmflags,
2398 &info->mti_exp->exp_handle.h_cookie);
2404 * Finish res_id initializing by name hash marking part of
2405 * directory which is taking modification.
2407 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2410 policy->l_inodebits.bits = ibits;
2413 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2414 * going to be sent to client. If it is - mdt_intent_policy() path will
2415 * fix it up and turn FL_LOCAL flag off.
2417 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2418 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2419 &info->mti_exp->exp_handle.h_cookie);
2421 mdt_object_unlock(info, o, lh, 1);
2422 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2423 lh->mlh_pdo_hash != 0 &&
2424 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2425 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2431 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2432 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2434 return mdt_object_lock0(info, o, lh, ibits, false, locality);
2437 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2438 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2440 struct mdt_lock_handle tmp = *lh;
2443 rc = mdt_object_lock0(info, o, &tmp, ibits, true, locality);
2451 * Save a lock within request object.
2453 * Keep the lock referenced until whether client ACK or transaction
2454 * commit happens or release the lock immediately depending on input
2455 * parameters. If COS is ON, a write lock is converted to COS lock
2458 * \param info thead info object
2459 * \param h lock handle
2460 * \param mode lock mode
2461 * \param decref force immediate lock releasing
2464 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2465 ldlm_mode_t mode, int decref)
2469 if (lustre_handle_is_used(h)) {
2470 if (decref || !info->mti_has_trans ||
2471 !(mode & (LCK_PW | LCK_EX))){
2472 mdt_fid_unlock(h, mode);
2474 struct mdt_device *mdt = info->mti_mdt;
2475 struct ldlm_lock *lock = ldlm_handle2lock(h);
2476 struct ptlrpc_request *req = mdt_info_req(info);
2479 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2481 /* there is no request if mdt_object_unlock() is called
2482 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2483 if (likely(req != NULL)) {
2484 CDEBUG(D_HA, "request = %p reply state = %p"
2485 " transno = "LPD64"\n", req,
2486 req->rq_reply_state, req->rq_transno);
2487 if (mdt_cos_is_enabled(mdt)) {
2489 ldlm_lock_downgrade(lock, LCK_COS);
2492 ptlrpc_save_lock(req, h, mode, no_ack);
2494 ldlm_lock_decref(h, mode);
2496 if (mdt_is_lock_sync(lock)) {
2497 CDEBUG(D_HA, "found sync-lock,"
2498 " async commit started\n");
2499 mdt_device_commit_async(info->mti_env,
2502 LDLM_LOCK_PUT(lock);
2511 * Unlock mdt object.
2513 * Immeditely release the regular lock and the PDO lock or save the
2514 * lock in reqeuest and keep them referenced until client ACK or
2515 * transaction commit.
2517 * \param info thread info object
2518 * \param o mdt object
2519 * \param lh mdt lock handle referencing regular and PDO locks
2520 * \param decref force immediate lock releasing
2522 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2523 struct mdt_lock_handle *lh, int decref)
2527 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2528 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2530 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2531 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2536 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2537 const struct lu_fid *f,
2538 struct mdt_lock_handle *lh,
2541 struct mdt_object *o;
2543 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2547 rc = mdt_object_lock(info, o, lh, ibits,
2550 mdt_object_put(info->mti_env, o);
2557 void mdt_object_unlock_put(struct mdt_thread_info * info,
2558 struct mdt_object * o,
2559 struct mdt_lock_handle *lh,
2562 mdt_object_unlock(info, o, lh, decref);
2563 mdt_object_put(info->mti_env, o);
2567 * Generic code handling requests that have struct mdt_body passed in:
2569 * - extract mdt_body from request and save it in @info, if present;
2571 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2574 * - if HABEO_CORPUS flag is set for this request type check whether object
2575 * actually exists on storage (lu_object_exists()).
2578 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2580 const struct mdt_body *body;
2581 struct mdt_object *obj;
2582 const struct lu_env *env;
2583 struct req_capsule *pill;
2587 env = info->mti_env;
2588 pill = info->mti_pill;
2590 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2594 if (!(body->valid & OBD_MD_FLID))
2597 if (!fid_is_sane(&body->fid1)) {
2598 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2603 * Do not get size or any capa fields before we check that request
2604 * contains capa actually. There are some requests which do not, for
2605 * instance MDS_IS_SUBDIR.
2607 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2608 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2609 mdt_set_capainfo(info, 0, &body->fid1,
2610 req_capsule_client_get(pill, &RMF_CAPA1));
2612 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2614 if ((flags & HABEO_CORPUS) &&
2615 !mdt_object_exists(obj)) {
2616 mdt_object_put(env, obj);
2617 /* for capability renew ENOENT will be handled in
2619 if (body->valid & OBD_MD_FLOSSCAPA)
2624 info->mti_object = obj;
2633 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2635 struct req_capsule *pill = info->mti_pill;
2639 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2640 rc = mdt_body_unpack(info, flags);
2644 if (rc == 0 && (flags & HABEO_REFERO)) {
2646 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2647 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2648 info->mti_body->eadatasize);
2649 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2650 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2653 rc = req_capsule_server_pack(pill);
2658 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2660 struct md_device *next = m->mdt_child;
2662 return next->md_ops->mdo_init_capa_ctxt(env, next,
2663 m->mdt_lut.lut_mds_capa,
2664 m->mdt_capa_timeout,
2669 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2671 lh->mlh_type = MDT_NUL_LOCK;
2672 lh->mlh_reg_lh.cookie = 0ull;
2673 lh->mlh_reg_mode = LCK_MINMODE;
2674 lh->mlh_pdo_lh.cookie = 0ull;
2675 lh->mlh_pdo_mode = LCK_MINMODE;
2676 lh->mlh_rreg_lh.cookie = 0ull;
2677 lh->mlh_rreg_mode = LCK_MINMODE;
2680 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2682 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2683 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2687 * Initialize fields of struct mdt_thread_info. Other fields are left in
2688 * uninitialized state, because it's too expensive to zero out whole
2689 * mdt_thread_info (> 1K) on each request arrival.
2691 void mdt_thread_info_init(struct ptlrpc_request *req,
2692 struct mdt_thread_info *info)
2696 info->mti_pill = &req->rq_pill;
2699 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2700 mdt_lock_handle_init(&info->mti_lh[i]);
2702 /* mdt device: it can be NULL while CONNECT */
2703 if (req->rq_export) {
2704 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2705 info->mti_exp = req->rq_export;
2707 info->mti_mdt = NULL;
2708 info->mti_env = req->rq_svc_thread->t_env;
2709 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2711 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2712 info->mti_big_buf = LU_BUF_NULL;
2713 info->mti_body = NULL;
2714 info->mti_object = NULL;
2715 info->mti_dlm_req = NULL;
2716 info->mti_has_trans = 0;
2717 info->mti_cross_ref = 0;
2718 info->mti_opdata = 0;
2719 info->mti_big_lmm_used = 0;
2721 info->mti_spec.no_create = 0;
2722 info->mti_spec.sp_rm_entry = 0;
2724 info->mti_spec.u.sp_ea.eadata = NULL;
2725 info->mti_spec.u.sp_ea.eadatalen = 0;
2728 void mdt_thread_info_fini(struct mdt_thread_info *info)
2732 if (info->mti_object != NULL) {
2733 mdt_object_put(info->mti_env, info->mti_object);
2734 info->mti_object = NULL;
2737 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2738 mdt_lock_handle_fini(&info->mti_lh[i]);
2739 info->mti_env = NULL;
2740 info->mti_pill = NULL;
2741 info->mti_exp = NULL;
2743 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2744 lu_buf_free(&info->mti_big_buf);
2747 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2749 struct mdt_thread_info *mti;
2750 struct lustre_capa *lc;
2752 mti = mdt_th_info(tsi->tsi_env);
2753 LASSERT(mti != NULL);
2755 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2756 if (tsi->tsi_corpus != NULL) {
2757 struct req_capsule *pill = tsi->tsi_pill;
2759 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2760 lu_object_get(tsi->tsi_corpus);
2763 * XXX: must be part of tgt_mdt_body_unpack but moved here
2764 * due to mdt_set_capainfo().
2766 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2767 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2768 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2769 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->fid1, lc);
2772 mti->mti_body = tsi->tsi_mdt_body;
2773 mti->mti_dlm_req = tsi->tsi_dlm_req;
2778 int mdt_tgt_connect(struct tgt_session_info *tsi)
2780 struct ptlrpc_request *req = tgt_ses_req(tsi);
2785 rc = tgt_connect(tsi);
2789 rc = mdt_init_idmap(tsi);
2794 obd_disconnect(class_export_get(req->rq_export));
2813 static int mdt_intent_getattr(enum mdt_it_code opcode,
2814 struct mdt_thread_info *info,
2815 struct ldlm_lock **,
2818 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2819 struct mdt_thread_info *info,
2820 struct ldlm_lock **lockp,
2823 static int mdt_intent_layout(enum mdt_it_code opcode,
2824 struct mdt_thread_info *info,
2825 struct ldlm_lock **,
2827 static int mdt_intent_reint(enum mdt_it_code opcode,
2828 struct mdt_thread_info *info,
2829 struct ldlm_lock **,
2832 static struct mdt_it_flavor {
2833 const struct req_format *it_fmt;
2835 int (*it_act)(enum mdt_it_code ,
2836 struct mdt_thread_info *,
2837 struct ldlm_lock **,
2840 } mdt_it_flavor[] = {
2842 .it_fmt = &RQF_LDLM_INTENT,
2843 /*.it_flags = HABEO_REFERO,*/
2845 .it_act = mdt_intent_reint,
2846 .it_reint = REINT_OPEN
2849 .it_fmt = &RQF_LDLM_INTENT,
2851 * OCREAT is not a MUTABOR request as if the file
2853 * We do the extra check of OBD_CONNECT_RDONLY in
2854 * mdt_reint_open() when we really need to create
2858 .it_act = mdt_intent_reint,
2859 .it_reint = REINT_OPEN
2862 .it_fmt = &RQF_LDLM_INTENT,
2863 .it_flags = MUTABOR,
2864 .it_act = mdt_intent_reint,
2865 .it_reint = REINT_CREATE
2867 [MDT_IT_GETATTR] = {
2868 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2869 .it_flags = HABEO_REFERO,
2870 .it_act = mdt_intent_getattr
2872 [MDT_IT_READDIR] = {
2878 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2879 .it_flags = HABEO_REFERO,
2880 .it_act = mdt_intent_getattr
2883 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2884 .it_flags = MUTABOR,
2886 .it_reint = REINT_UNLINK
2890 .it_flags = MUTABOR,
2893 [MDT_IT_GETXATTR] = {
2894 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
2895 .it_flags = HABEO_CORPUS,
2896 .it_act = mdt_intent_getxattr
2899 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
2901 .it_act = mdt_intent_layout
2905 int mdt_intent_lock_replace(struct mdt_thread_info *info,
2906 struct ldlm_lock **lockp,
2907 struct ldlm_lock *new_lock,
2908 struct mdt_lock_handle *lh,
2911 struct ptlrpc_request *req = mdt_info_req(info);
2912 struct ldlm_lock *lock = *lockp;
2915 * Get new lock only for cases when possible resent did not find any
2918 if (new_lock == NULL)
2919 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
2921 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2922 lh->mlh_reg_lh.cookie = 0;
2926 LASSERTF(new_lock != NULL,
2927 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2930 * If we've already given this lock to a client once, then we should
2931 * have no readers or writers. Otherwise, we should have one reader
2932 * _or_ writer ref (which will be zeroed below) before returning the
2935 if (new_lock->l_export == req->rq_export) {
2936 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2938 LASSERT(new_lock->l_export == NULL);
2939 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2944 if (new_lock->l_export == req->rq_export) {
2946 * Already gave this to the client, which means that we
2947 * reconstructed a reply.
2949 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2951 lh->mlh_reg_lh.cookie = 0;
2952 RETURN(ELDLM_LOCK_REPLACED);
2956 * Fixup the lock to be given to the client.
2958 lock_res_and_lock(new_lock);
2959 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
2960 * possible blocking AST. */
2961 while (new_lock->l_readers > 0) {
2962 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
2963 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2964 new_lock->l_readers--;
2966 while (new_lock->l_writers > 0) {
2967 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
2968 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2969 new_lock->l_writers--;
2972 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
2973 new_lock->l_blocking_ast = lock->l_blocking_ast;
2974 new_lock->l_completion_ast = lock->l_completion_ast;
2975 new_lock->l_remote_handle = lock->l_remote_handle;
2976 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2978 unlock_res_and_lock(new_lock);
2980 cfs_hash_add(new_lock->l_export->exp_lock_hash,
2981 &new_lock->l_remote_handle,
2982 &new_lock->l_exp_hash);
2984 LDLM_LOCK_RELEASE(new_lock);
2985 lh->mlh_reg_lh.cookie = 0;
2987 RETURN(ELDLM_LOCK_REPLACED);
2990 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
2991 struct ldlm_lock *new_lock,
2992 struct ldlm_lock **old_lock,
2993 struct mdt_lock_handle *lh,
2994 enum mdt_it_code opcode)
2996 struct ptlrpc_request *req = mdt_info_req(info);
2997 struct obd_export *exp = req->rq_export;
2998 struct lustre_handle remote_hdl;
2999 struct ldlm_request *dlmreq;
3000 struct ldlm_lock *lock;
3002 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3005 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3006 remote_hdl = dlmreq->lock_handle[0];
3007 /* If the client does not require open lock, it does not need to
3008 * search lock in exp_lock_hash, since the server thread will
3009 * make sure the lock will be released, and the resend request
3010 * can always re-enqueue the lock */
3011 if ((opcode != MDT_IT_OPEN) || (opcode == MDT_IT_OPEN &&
3012 info->mti_spec.sp_cr_flags & MDS_OPEN_LOCK)) {
3013 /* In the function below, .hs_keycmp resolves to
3014 * ldlm_export_lock_keycmp() */
3015 /* coverity[overrun-buffer-val] */
3016 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3018 lock_res_and_lock(lock);
3019 if (lock != new_lock) {
3020 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3021 lh->mlh_reg_mode = lock->l_granted_mode;
3023 LDLM_DEBUG(lock, "Restoring lock cookie");
3024 DEBUG_REQ(D_DLMTRACE, req,
3025 "restoring lock cookie "LPX64,
3026 lh->mlh_reg_lh.cookie);
3028 *old_lock = LDLM_LOCK_GET(lock);
3029 cfs_hash_put(exp->exp_lock_hash,
3031 unlock_res_and_lock(lock);
3034 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3035 unlock_res_and_lock(lock);
3039 * If the xid matches, then we know this is a resent request, and allow
3040 * it. (It's probably an OPEN, for which we don't send a lock.
3042 if (req_xid_is_last(req))
3046 * This remote handle isn't enqueued, so we never received or processed
3047 * this request. Clear MSG_RESENT, because it can be handled like any
3048 * normal request now.
3050 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3052 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3056 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3057 struct mdt_thread_info *info,
3058 struct ldlm_lock **lockp,
3061 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3062 struct ldlm_reply *ldlm_rep = NULL;
3066 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3067 * (for the resend case) or a new lock. Below we will use it to
3068 * replace the original lock.
3070 mdt_intent_fixup_resent(info, *lockp, NULL, lhc, opcode);
3071 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3072 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3073 rc = mdt_object_lock(info, info->mti_object, lhc,
3074 MDS_INODELOCK_XATTR,
3080 grc = mdt_getxattr(info);
3082 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3084 if (mdt_info_req(info)->rq_repmsg != NULL)
3085 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3086 if (ldlm_rep == NULL)
3087 RETURN(err_serious(-EFAULT));
3089 ldlm_rep->lock_policy_res2 = grc;
3094 static int mdt_intent_getattr(enum mdt_it_code opcode,
3095 struct mdt_thread_info *info,
3096 struct ldlm_lock **lockp,
3099 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3100 struct ldlm_lock *new_lock = NULL;
3102 struct ldlm_reply *ldlm_rep;
3103 struct ptlrpc_request *req;
3104 struct mdt_body *reqbody;
3105 struct mdt_body *repbody;
3109 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3112 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3115 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3116 repbody->eadatasize = 0;
3117 repbody->aclsize = 0;
3121 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3123 case MDT_IT_GETATTR:
3124 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3128 CERROR("Unsupported intent (%d)\n", opcode);
3129 GOTO(out_shrink, rc = -EINVAL);
3132 rc = mdt_init_ucred(info, reqbody);
3134 GOTO(out_shrink, rc);
3136 req = info->mti_pill->rc_req;
3137 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3138 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3140 /* Get lock from request for possible resent case. */
3141 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc, opcode);
3143 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3144 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3146 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3147 ldlm_rep->lock_policy_res2 = 0;
3148 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3149 ldlm_rep->lock_policy_res2) {
3150 lhc->mlh_reg_lh.cookie = 0ull;
3151 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3154 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3157 mdt_exit_ucred(info);
3159 mdt_client_compatibility(info);
3160 rc2 = mdt_fix_reply(info);
3166 static int mdt_intent_layout(enum mdt_it_code opcode,
3167 struct mdt_thread_info *info,
3168 struct ldlm_lock **lockp,
3171 struct layout_intent *layout;
3173 struct mdt_object *obj = NULL;
3174 struct md_object *child = NULL;
3178 if (opcode != MDT_IT_LAYOUT) {
3179 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3184 fid = &info->mti_tmp_fid2;
3185 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3187 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3189 RETURN(PTR_ERR(obj));
3191 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3192 child = mdt_object_child(obj);
3194 /* get the length of lsm */
3195 rc = mo_xattr_get(info->mti_env, child, &LU_BUF_NULL,
3198 if (rc > info->mti_mdt->mdt_max_mdsize)
3199 info->mti_mdt->mdt_max_mdsize = rc;
3202 mdt_object_put(info->mti_env, obj);
3204 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3205 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3206 ldlm_lvbo_size(*lockp));
3207 rc = req_capsule_server_pack(info->mti_pill);
3211 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3212 LASSERT(layout != NULL);
3213 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3214 /* return to normal ldlm handling */
3217 CERROR("%s: Unsupported layout intent (%d)\n",
3218 mdt_obd_name(info->mti_mdt), layout->li_opc);
3222 static int mdt_intent_reint(enum mdt_it_code opcode,
3223 struct mdt_thread_info *info,
3224 struct ldlm_lock **lockp,
3227 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3228 struct ldlm_reply *rep = NULL;
3232 static const struct req_format *intent_fmts[REINT_MAX] = {
3233 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3234 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3239 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3243 if (mdt_it_flavor[opcode].it_reint != opc) {
3244 CERROR("Reint code %ld doesn't match intent: %d\n",
3246 RETURN(err_serious(-EPROTO));
3249 /* Get lock from request for possible resent case. */
3250 mdt_intent_fixup_resent(info, *lockp, NULL, lhc, opcode);
3252 rc = mdt_reint_internal(info, lhc, opc);
3254 /* Check whether the reply has been packed successfully. */
3255 if (mdt_info_req(info)->rq_repmsg != NULL)
3256 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3258 RETURN(err_serious(-EFAULT));
3260 /* MDC expects this in any case */
3262 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3264 /* the open lock or the lock for cross-ref object should be
3265 * returned to the client */
3266 if (rc == -EREMOTE || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3267 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3268 rep->lock_policy_res2 = 0;
3269 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3273 rep->lock_policy_res2 = clear_serious(rc);
3275 if (rep->lock_policy_res2 == -ENOENT &&
3276 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3277 rep->lock_policy_res2 = 0;
3279 if (rc == -ENOTCONN || rc == -ENODEV ||
3280 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3282 * If it is the disconnect error (ENODEV & ENOCONN), the error
3283 * will be returned by rq_status, and client at ptlrpc layer
3284 * will detect this, then disconnect, reconnect the import
3285 * immediately, instead of impacting the following the rpc.
3287 lhc->mlh_reg_lh.cookie = 0ull;
3291 * For other cases, the error will be returned by intent.
3292 * and client will retrieve the result from intent.
3295 * FIXME: when open lock is finished, that should be
3298 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3299 LASSERTF(rc == 0, "Error occurred but lock handle "
3300 "is still in use, rc = %d\n", rc);
3301 rep->lock_policy_res2 = 0;
3302 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3305 lhc->mlh_reg_lh.cookie = 0ull;
3306 RETURN(ELDLM_LOCK_ABORTED);
3311 static int mdt_intent_code(long itcode)
3319 case IT_OPEN|IT_CREAT:
3326 rc = MDT_IT_READDIR;
3329 rc = MDT_IT_GETATTR;
3341 rc = MDT_IT_GETXATTR;
3346 case IT_QUOTA_DQACQ:
3351 CERROR("Unknown intent opcode: %ld\n", itcode);
3358 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3359 struct ldlm_lock **lockp, __u64 flags)
3361 struct req_capsule *pill;
3362 struct mdt_it_flavor *flv;
3367 opc = mdt_intent_code(itopc);
3371 pill = info->mti_pill;
3373 if (opc == MDT_IT_QUOTA) {
3374 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3377 RETURN(-EOPNOTSUPP);
3379 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3380 /* pass the request to quota master */
3381 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3382 mdt_info_req(info), lockp,
3387 flv = &mdt_it_flavor[opc];
3388 if (flv->it_fmt != NULL)
3389 req_capsule_extend(pill, flv->it_fmt);
3391 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3393 struct ptlrpc_request *req = mdt_info_req(info);
3394 if (flv->it_flags & MUTABOR &&
3395 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3398 if (rc == 0 && flv->it_act != NULL) {
3399 struct ldlm_reply *rep;
3401 /* execute policy */
3402 rc = flv->it_act(opc, info, lockp, flags);
3404 /* Check whether the reply has been packed successfully. */
3405 if (mdt_info_req(info)->rq_repmsg != NULL) {
3406 rep = req_capsule_server_get(info->mti_pill,
3408 rep->lock_policy_res2 =
3409 ptlrpc_status_hton(rep->lock_policy_res2);
3417 static int mdt_intent_policy(struct ldlm_namespace *ns,
3418 struct ldlm_lock **lockp, void *req_cookie,
3419 ldlm_mode_t mode, __u64 flags, void *data)
3421 struct tgt_session_info *tsi;
3422 struct mdt_thread_info *info;
3423 struct ptlrpc_request *req = req_cookie;
3424 struct ldlm_intent *it;
3425 struct req_capsule *pill;
3430 LASSERT(req != NULL);
3432 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3434 info = tsi2mdt_info(tsi);
3435 LASSERT(info != NULL);
3436 pill = info->mti_pill;
3437 LASSERT(pill->rc_req == req);
3439 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3440 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3441 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3443 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3447 /* Lock without inodebits makes no sense and will oops
3448 * later in ldlm. Let's check it now to see if we have
3449 * ibits corrupted somewhere in mdt_intent_opc().
3450 * The case for client miss to set ibits has been
3451 * processed by others. */
3452 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3453 lr_type == LDLM_IBITS,
3454 info->mti_dlm_req->lock_desc.\
3455 l_policy_data.l_inodebits.bits != 0));
3457 rc = err_serious(-EFAULT);
3459 /* No intent was provided */
3460 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3461 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3462 rc = req_capsule_server_pack(pill);
3464 rc = err_serious(rc);
3466 mdt_thread_info_fini(info);
3470 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3472 struct seq_server_site *ss = mdt_seq_site(mdt);
3474 if (ss->ss_node_id == 0)
3477 if (ss->ss_client_seq != NULL) {
3478 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3479 ss->ss_client_seq->lcs_exp = NULL;
3482 if (ss->ss_server_fld != NULL) {
3483 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3484 ss->ss_server_fld->lsf_control_exp = NULL;
3488 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3490 struct seq_server_site *ss = mdt_seq_site(mdt);
3495 if (ss->ss_server_seq == NULL)
3496 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3501 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3503 mdt_seq_fini_cli(mdt);
3504 mdt_deregister_seq_exp(mdt);
3506 return seq_site_fini(env, mdt_seq_site(mdt));
3510 * It will retrieve its FLDB entries from MDT0, and it only happens
3511 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3512 * and it needs to refresh FLDB from the MDT0.
3514 static int mdt_register_lwp_callback(void *data)
3517 struct mdt_device *mdt = data;
3518 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3522 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3524 if (!likely(fld->lsf_new))
3527 rc = lu_env_init(&env, LCT_MD_THREAD);
3529 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3533 rc = fld_update_from_controller(&env, fld);
3535 CERROR("%s: cannot update controller: rc = %d\n",
3536 mdt_obd_name(mdt), rc);
3544 static int mdt_register_seq_exp(struct mdt_device *mdt)
3546 struct seq_server_site *ss = mdt_seq_site(mdt);
3547 char *lwp_name = NULL;
3550 if (ss->ss_node_id == 0)
3553 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3554 if (lwp_name == NULL)
3555 GOTO(out_free, rc = -ENOMEM);
3557 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3561 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3566 rc = lustre_register_lwp_item(lwp_name,
3567 &ss->ss_server_fld->lsf_control_exp,
3568 mdt_register_lwp_callback, mdt);
3570 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3571 ss->ss_client_seq->lcs_exp = NULL;
3575 if (lwp_name != NULL)
3576 OBD_FREE(lwp_name, MAX_OBD_NAME);
3582 * Init client sequence manager which is used by local MDS to talk to sequence
3583 * controller on remote node.
3585 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3587 struct seq_server_site *ss = mdt_seq_site(mdt);
3592 /* check if this is adding the first MDC and controller is not yet
3594 OBD_ALLOC_PTR(ss->ss_client_seq);
3595 if (ss->ss_client_seq == NULL)
3598 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3599 if (prefix == NULL) {
3600 OBD_FREE_PTR(ss->ss_client_seq);
3601 ss->ss_client_seq = NULL;
3605 /* Note: seq_client_fini will be called in seq_site_fini */
3606 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3607 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3608 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3610 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3612 OBD_FREE_PTR(ss->ss_client_seq);
3613 ss->ss_client_seq = NULL;
3617 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3622 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3624 struct seq_server_site *ss;
3628 ss = mdt_seq_site(mdt);
3629 /* init sequence controller server(MDT0) */
3630 if (ss->ss_node_id == 0) {
3631 OBD_ALLOC_PTR(ss->ss_control_seq);
3632 if (ss->ss_control_seq == NULL)
3635 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3636 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3639 GOTO(out_seq_fini, rc);
3642 /* Init normal sequence server */
3643 OBD_ALLOC_PTR(ss->ss_server_seq);
3644 if (ss->ss_server_seq == NULL)
3645 GOTO(out_seq_fini, rc = -ENOMEM);
3647 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3648 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3650 GOTO(out_seq_fini, rc);
3652 /* init seq client for seq server to talk to seq controller(MDT0) */
3653 rc = mdt_seq_init_cli(env, mdt);
3655 GOTO(out_seq_fini, rc);
3657 if (ss->ss_node_id != 0)
3658 /* register controler export through lwp */
3659 rc = mdt_register_seq_exp(mdt);
3664 mdt_seq_fini(env, mdt);
3672 static int mdt_fld_fini(const struct lu_env *env,
3673 struct mdt_device *m)
3675 struct seq_server_site *ss = mdt_seq_site(m);
3678 if (ss && ss->ss_server_fld) {
3679 fld_server_fini(env, ss->ss_server_fld);
3680 OBD_FREE_PTR(ss->ss_server_fld);
3681 ss->ss_server_fld = NULL;
3687 static int mdt_fld_init(const struct lu_env *env,