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_linkea.h>
71 #include <lustre_lfsck.h>
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 ldlm_mode_t mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
95 static struct mdt_device *mdt_dev(struct lu_device *d);
96 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
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 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
134 return (rep->lock_policy_res1 & flag);
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, int flag)
141 info->mti_opdata &= ~flag;
143 rep->lock_policy_res1 &= ~flag;
146 void mdt_set_disposition(struct mdt_thread_info *info,
147 struct ldlm_reply *rep, int flag)
150 info->mti_opdata |= flag;
152 rep->lock_policy_res1 |= flag;
155 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
157 lh->mlh_pdo_hash = 0;
158 lh->mlh_reg_mode = lm;
159 lh->mlh_rreg_mode = lm;
160 lh->mlh_type = MDT_REG_LOCK;
163 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
164 const char *name, int namelen)
166 lh->mlh_reg_mode = lm;
167 lh->mlh_rreg_mode = lm;
168 lh->mlh_type = MDT_PDO_LOCK;
170 if (name != NULL && (name[0] != '\0')) {
171 LASSERT(namelen > 0);
172 lh->mlh_pdo_hash = full_name_hash(name, namelen);
173 /* XXX Workaround for LU-2856
174 * Zero is a valid return value of full_name_hash, but several
175 * users of mlh_pdo_hash assume a non-zero hash value. We
176 * therefore map zero onto an arbitrary, but consistent
177 * value (1) to avoid problems further down the road. */
178 if (unlikely(!lh->mlh_pdo_hash))
179 lh->mlh_pdo_hash = 1;
181 LASSERT(namelen == 0);
182 lh->mlh_pdo_hash = 0ull;
186 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
187 struct mdt_lock_handle *lh)
193 * Any dir access needs couple of locks:
195 * 1) on part of dir we gonna take lookup/modify;
197 * 2) on whole dir to protect it from concurrent splitting and/or to
198 * flush client's cache for readdir().
200 * so, for a given mode and object this routine decides what lock mode
201 * to use for lock #2:
203 * 1) if caller's gonna lookup in dir then we need to protect dir from
204 * being splitted only - LCK_CR
206 * 2) if caller's gonna modify dir then we need to protect dir from
207 * being splitted and to flush cache - LCK_CW
209 * 3) if caller's gonna modify dir and that dir seems ready for
210 * splitting then we need to protect it from any type of access
211 * (lookup/modify/split) - LCK_EX --bzzz
214 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
215 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
218 * Ask underlaying level its opinion about preferable PDO lock mode
219 * having access type passed as regular lock mode:
221 * - MDL_MINMODE means that lower layer does not want to specify lock
224 * - MDL_NL means that no PDO lock should be taken. This is used in some
225 * cases. Say, for non-splittable directories no need to use PDO locks
228 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
229 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
231 if (mode != MDL_MINMODE) {
232 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
235 * Lower layer does not want to specify locking mode. We do it
236 * our selves. No special protection is needed, just flush
237 * client's cache on modification and allow concurrent
240 switch (lh->mlh_reg_mode) {
242 lh->mlh_pdo_mode = LCK_EX;
245 lh->mlh_pdo_mode = LCK_CR;
248 lh->mlh_pdo_mode = LCK_CW;
251 CERROR("Not expected lock type (0x%x)\n",
252 (int)lh->mlh_reg_mode);
257 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
261 int mdt_getstatus(struct tgt_session_info *tsi)
263 struct mdt_thread_info *info = tsi2mdt_info(tsi);
264 struct mdt_device *mdt = info->mti_mdt;
265 struct mdt_body *repbody;
270 rc = mdt_check_ucred(info);
272 GOTO(out, rc = err_serious(rc));
274 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
275 GOTO(out, rc = err_serious(-ENOMEM));
277 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
278 repbody->fid1 = mdt->mdt_md_root_fid;
279 repbody->valid |= OBD_MD_FLID;
281 if (tsi->tsi_tgt->lut_mds_capa &&
282 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
283 struct mdt_object *root;
284 struct lustre_capa *capa;
286 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
288 GOTO(out, rc = PTR_ERR(root));
290 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
292 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
293 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
295 mdt_object_put(info->mti_env, root);
297 repbody->valid |= OBD_MD_FLMDSCAPA;
301 mdt_thread_info_fini(info);
305 int mdt_statfs(struct tgt_session_info *tsi)
307 struct ptlrpc_request *req = tgt_ses_req(tsi);
308 struct mdt_thread_info *info = tsi2mdt_info(tsi);
309 struct md_device *next = info->mti_mdt->mdt_child;
310 struct ptlrpc_service_part *svcpt;
311 struct obd_statfs *osfs;
316 svcpt = req->rq_rqbd->rqbd_svcpt;
318 /* This will trigger a watchdog timeout */
319 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
320 (MDT_SERVICE_WATCHDOG_FACTOR *
321 at_get(&svcpt->scp_at_estimate)) + 1);
323 rc = mdt_check_ucred(info);
325 GOTO(out, rc = err_serious(rc));
327 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
328 GOTO(out, rc = err_serious(-ENOMEM));
330 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
332 GOTO(out, rc = -EPROTO);
334 /** statfs information are cached in the mdt_device */
335 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
336 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
337 /** statfs data is too old, get up-to-date one */
338 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
341 spin_lock(&info->mti_mdt->mdt_osfs_lock);
342 info->mti_mdt->mdt_osfs = *osfs;
343 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
344 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
346 /** use cached statfs data */
347 spin_lock(&info->mti_mdt->mdt_osfs_lock);
348 *osfs = info->mti_mdt->mdt_osfs;
349 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
353 mdt_counter_incr(req, LPROC_MDT_STATFS);
355 mdt_thread_info_fini(info);
360 * Pack SOM attributes into the reply.
361 * Call under a DLM UPDATE lock.
363 static void mdt_pack_size2body(struct mdt_thread_info *info,
364 struct mdt_object *mo)
367 struct md_attr *ma = &info->mti_attr;
369 LASSERT(ma->ma_attr.la_valid & LA_MODE);
370 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
372 /* Check if Size-on-MDS is supported, if this is a regular file,
373 * if SOM is enabled on the object and if SOM cache exists and valid.
374 * Otherwise do not pack Size-on-MDS attributes to the reply. */
375 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
376 !S_ISREG(ma->ma_attr.la_mode) ||
377 !mdt_object_is_som_enabled(mo) ||
378 !(ma->ma_valid & MA_SOM))
381 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
382 b->size = ma->ma_som->msd_size;
383 b->blocks = ma->ma_som->msd_blocks;
386 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
387 const struct lu_attr *attr, const struct lu_fid *fid)
389 struct md_attr *ma = &info->mti_attr;
391 LASSERT(ma->ma_valid & MA_INODE);
393 b->atime = attr->la_atime;
394 b->mtime = attr->la_mtime;
395 b->ctime = attr->la_ctime;
396 b->mode = attr->la_mode;
397 b->size = attr->la_size;
398 b->blocks = attr->la_blocks;
399 b->uid = attr->la_uid;
400 b->gid = attr->la_gid;
401 b->flags = attr->la_flags;
402 b->nlink = attr->la_nlink;
403 b->rdev = attr->la_rdev;
405 /*XXX should pack the reply body according to lu_valid*/
406 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
407 OBD_MD_FLGID | OBD_MD_FLTYPE |
408 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
409 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
411 if (!S_ISREG(attr->la_mode)) {
412 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
413 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
414 /* means no objects are allocated on osts. */
415 LASSERT(!(ma->ma_valid & MA_LOV));
416 /* just ignore blocks occupied by extend attributes on MDS */
418 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
419 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
420 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
421 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
422 /* A released file stores its size on MDS. */
423 /* But return 1 block for released file, unless tools like tar
424 * will consider it fully sparse. (LU-3864)
426 if (unlikely(b->size == 0))
430 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
435 b->valid |= OBD_MD_FLID;
436 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
437 PFID(fid), b->nlink, b->mode, b->size);
441 mdt_body_reverse_idmap(info, b);
443 if (fid != NULL && (b->valid & OBD_MD_FLSIZE))
444 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
445 PFID(fid), (unsigned long long)b->size);
448 static inline int mdt_body_has_lov(const struct lu_attr *la,
449 const struct mdt_body *body)
451 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
452 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
455 void mdt_client_compatibility(struct mdt_thread_info *info)
457 struct mdt_body *body;
458 struct ptlrpc_request *req = mdt_info_req(info);
459 struct obd_export *exp = req->rq_export;
460 struct md_attr *ma = &info->mti_attr;
461 struct lu_attr *la = &ma->ma_attr;
464 if (exp_connect_layout(exp))
465 /* the client can deal with 16-bit lmm_stripe_count */
468 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
470 if (!mdt_body_has_lov(la, body))
473 /* now we have a reply with a lov for a client not compatible with the
474 * layout lock so we have to clean the layout generation number */
475 if (S_ISREG(la->la_mode))
476 ma->ma_lmm->lmm_layout_gen = 0;
480 static int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
483 const struct lu_env *env = info->mti_env;
487 LASSERT(info->mti_big_lmm_used == 0);
488 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
492 /* big_lmm may need to be grown */
493 if (info->mti_big_lmmsize < rc) {
494 int size = size_roundup_power2(rc);
496 if (info->mti_big_lmmsize > 0) {
497 /* free old buffer */
498 LASSERT(info->mti_big_lmm);
499 OBD_FREE_LARGE(info->mti_big_lmm,
500 info->mti_big_lmmsize);
501 info->mti_big_lmm = NULL;
502 info->mti_big_lmmsize = 0;
505 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
506 if (info->mti_big_lmm == NULL)
508 info->mti_big_lmmsize = size;
510 LASSERT(info->mti_big_lmmsize >= rc);
512 info->mti_buf.lb_buf = info->mti_big_lmm;
513 info->mti_buf.lb_len = info->mti_big_lmmsize;
514 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
519 int mdt_attr_get_lov(struct mdt_thread_info *info,
520 struct mdt_object *o, struct md_attr *ma)
522 struct md_object *next = mdt_object_child(o);
523 struct lu_buf *buf = &info->mti_buf;
526 buf->lb_buf = ma->ma_lmm;
527 buf->lb_len = ma->ma_lmm_size;
528 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LOV);
530 ma->ma_lmm_size = rc;
531 ma->ma_valid |= MA_LOV;
533 } else if (rc == -ENODATA) {
536 } else if (rc == -ERANGE) {
537 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LOV);
539 info->mti_big_lmm_used = 1;
540 ma->ma_valid |= MA_LOV;
541 ma->ma_lmm = info->mti_big_lmm;
542 ma->ma_lmm_size = rc;
543 /* update mdt_max_mdsize so all clients
544 * will be aware about that */
545 if (info->mti_mdt->mdt_max_mdsize < rc)
546 info->mti_mdt->mdt_max_mdsize = rc;
554 int mdt_attr_get_pfid(struct mdt_thread_info *info,
555 struct mdt_object *o, struct lu_fid *pfid)
557 struct lu_buf *buf = &info->mti_buf;
558 struct link_ea_header *leh;
559 struct link_ea_entry *lee;
563 buf->lb_buf = info->mti_big_lmm;
564 buf->lb_len = info->mti_big_lmmsize;
565 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
566 buf, XATTR_NAME_LINK);
567 /* ignore errors, MA_PFID won't be set and it is
568 * up to the caller to treat this as an error */
569 if (rc == -ERANGE || buf->lb_len == 0) {
570 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
571 buf->lb_buf = info->mti_big_lmm;
572 buf->lb_len = info->mti_big_lmmsize;
577 if (rc < sizeof(*leh)) {
578 CERROR("short LinkEA on "DFID": rc = %d\n",
579 PFID(mdt_object_fid(o)), rc);
583 leh = (struct link_ea_header *) buf->lb_buf;
584 lee = (struct link_ea_entry *)(leh + 1);
585 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
586 leh->leh_magic = LINK_EA_MAGIC;
587 leh->leh_reccount = __swab32(leh->leh_reccount);
588 leh->leh_len = __swab64(leh->leh_len);
590 if (leh->leh_magic != LINK_EA_MAGIC)
592 if (leh->leh_reccount == 0)
595 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
596 fid_be_to_cpu(pfid, pfid);
601 int mdt_attr_get_complex(struct mdt_thread_info *info,
602 struct mdt_object *o, struct md_attr *ma)
604 const struct lu_env *env = info->mti_env;
605 struct md_object *next = mdt_object_child(o);
606 struct lu_buf *buf = &info->mti_buf;
607 u32 mode = lu_object_attr(&next->mo_lu);
608 int need = ma->ma_need;
614 if (need & MA_INODE) {
615 ma->ma_need = MA_INODE;
616 rc = mo_attr_get(env, next, ma);
619 ma->ma_valid |= MA_INODE;
622 if (need & MA_PFID) {
623 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
625 ma->ma_valid |= MA_PFID;
626 /* ignore this error, parent fid is not mandatory */
630 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
631 rc = mdt_attr_get_lov(info, o, ma);
636 if (need & MA_LMV && S_ISDIR(mode)) {
637 buf->lb_buf = ma->ma_lmv;
638 buf->lb_len = ma->ma_lmv_size;
639 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
641 ma->ma_lmv_size = rc2;
642 ma->ma_valid |= MA_LMV;
643 } else if (rc2 == -ENODATA) {
650 if (need & MA_SOM && S_ISREG(mode)) {
651 buf->lb_buf = info->mti_xattr_buf;
652 buf->lb_len = sizeof(info->mti_xattr_buf);
653 CLASSERT(sizeof(struct som_attrs) <=
654 sizeof(info->mti_xattr_buf));
655 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
656 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
658 ma->ma_valid |= MA_SOM;
659 else if (rc2 < 0 && rc2 != -ENODATA)
663 if (need & MA_HSM && S_ISREG(mode)) {
664 buf->lb_buf = info->mti_xattr_buf;
665 buf->lb_len = sizeof(info->mti_xattr_buf);
666 CLASSERT(sizeof(struct hsm_attrs) <=
667 sizeof(info->mti_xattr_buf));
668 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
669 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
671 ma->ma_valid |= MA_HSM;
672 else if (rc2 < 0 && rc2 != -ENODATA)
676 #ifdef CONFIG_FS_POSIX_ACL
677 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
678 buf->lb_buf = ma->ma_acl;
679 buf->lb_len = ma->ma_acl_size;
680 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
682 ma->ma_acl_size = rc2;
683 ma->ma_valid |= MA_ACL_DEF;
684 } else if (rc2 == -ENODATA) {
693 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
694 rc, ma->ma_valid, ma->ma_lmm);
698 static int mdt_getattr_internal(struct mdt_thread_info *info,
699 struct mdt_object *o, int ma_need)
701 struct md_object *next = mdt_object_child(o);
702 const struct mdt_body *reqbody = info->mti_body;
703 struct ptlrpc_request *req = mdt_info_req(info);
704 struct md_attr *ma = &info->mti_attr;
705 struct lu_attr *la = &ma->ma_attr;
706 struct req_capsule *pill = info->mti_pill;
707 const struct lu_env *env = info->mti_env;
708 struct mdt_body *repbody;
709 struct lu_buf *buffer = &info->mti_buf;
714 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
715 RETURN(err_serious(-ENOMEM));
717 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
721 if (mdt_object_remote(o)) {
722 /* This object is located on remote node.*/
723 /* Return -EIO for old client */
724 if (!mdt_is_dne_client(req->rq_export))
725 GOTO(out, rc = -EIO);
727 repbody->fid1 = *mdt_object_fid(o);
728 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
732 buffer->lb_len = reqbody->eadatasize;
733 if (buffer->lb_len > 0)
734 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
736 buffer->lb_buf = NULL;
738 /* If it is dir object and client require MEA, then we got MEA */
739 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
740 reqbody->valid & OBD_MD_MEA) {
741 /* Assumption: MDT_MD size is enough for lmv size. */
742 ma->ma_lmv = buffer->lb_buf;
743 ma->ma_lmv_size = buffer->lb_len;
744 ma->ma_need = MA_LMV | MA_INODE;
746 ma->ma_lmm = buffer->lb_buf;
747 ma->ma_lmm_size = buffer->lb_len;
748 ma->ma_need = MA_LOV | MA_INODE | MA_HSM;
751 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
752 reqbody->valid & OBD_MD_FLDIREA &&
753 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
754 /* get default stripe info for this dir. */
755 ma->ma_need |= MA_LOV_DEF;
757 ma->ma_need |= ma_need;
758 if (ma->ma_need & MA_SOM)
759 ma->ma_som = &info->mti_u.som.data;
761 rc = mdt_attr_get_complex(info, o, ma);
763 CERROR("%s: getattr error for "DFID": rc = %d\n",
764 mdt_obd_name(info->mti_mdt),
765 PFID(mdt_object_fid(o)), rc);
769 /* if file is released, check if a restore is running */
770 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
771 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
772 repbody->t_state = MS_RESTORE;
773 repbody->valid |= OBD_MD_TSTATE;
776 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
778 /* the Lustre protocol supposes to return default striping
779 * on the user-visible root if explicitly requested */
780 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
781 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
782 struct lu_fid rootfid;
783 struct mdt_object *root;
784 struct mdt_device *mdt = info->mti_mdt;
786 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
789 root = mdt_object_find(env, mdt, &rootfid);
791 RETURN(PTR_ERR(root));
792 rc = mdt_attr_get_lov(info, root, ma);
793 mdt_object_put(info->mti_env, root);
795 CERROR("%s: getattr error for "DFID": rc = %d\n",
796 mdt_obd_name(info->mti_mdt),
797 PFID(mdt_object_fid(o)), rc);
802 if (likely(ma->ma_valid & MA_INODE))
803 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
807 if (mdt_body_has_lov(la, reqbody)) {
808 if (ma->ma_valid & MA_LOV) {
809 LASSERT(ma->ma_lmm_size);
810 mdt_dump_lmm(D_INFO, ma->ma_lmm);
811 repbody->eadatasize = ma->ma_lmm_size;
812 if (S_ISDIR(la->la_mode))
813 repbody->valid |= OBD_MD_FLDIREA;
815 repbody->valid |= OBD_MD_FLEASIZE;
817 if (ma->ma_valid & MA_LMV) {
818 LASSERT(S_ISDIR(la->la_mode));
819 repbody->eadatasize = ma->ma_lmv_size;
820 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
822 } else if (S_ISLNK(la->la_mode) &&
823 reqbody->valid & OBD_MD_LINKNAME) {
824 buffer->lb_buf = ma->ma_lmm;
825 /* eadatasize from client includes NULL-terminator, so
826 * there is no need to read it */
827 buffer->lb_len = reqbody->eadatasize - 1;
828 rc = mo_readlink(env, next, buffer);
829 if (unlikely(rc <= 0)) {
830 CERROR("%s: readlink failed for "DFID": rc = %d\n",
831 mdt_obd_name(info->mti_mdt),
832 PFID(mdt_object_fid(o)), rc);
835 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
837 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
839 repbody->valid |= OBD_MD_LINKNAME;
840 /* we need to report back size with NULL-terminator
841 * because client expects that */
842 repbody->eadatasize = rc + 1;
843 if (repbody->eadatasize != reqbody->eadatasize)
844 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
845 "on "DFID ", expected %d\n",
846 mdt_obd_name(info->mti_mdt),
847 rc, PFID(mdt_object_fid(o)),
848 reqbody->eadatasize - 1);
850 ((char *)ma->ma_lmm)[rc] = 0;
852 /* If the total CDEBUG() size is larger than a page, it
853 * will print a warning to the console, avoid this by
854 * printing just the last part of the symlink. */
855 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
856 print_limit < rc ? "..." : "", print_limit,
857 (char *)ma->ma_lmm + rc - print_limit, rc);
862 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
863 repbody->max_cookiesize = 0;
864 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
865 repbody->valid |= OBD_MD_FLMODEASIZE;
866 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
867 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
868 repbody->max_cookiesize);
871 if (exp_connect_rmtclient(info->mti_exp) &&
872 reqbody->valid & OBD_MD_FLRMTPERM) {
873 void *buf = req_capsule_server_get(pill, &RMF_ACL);
875 /* mdt_getattr_lock only */
876 rc = mdt_pack_remote_perm(info, o, buf);
878 repbody->valid &= ~OBD_MD_FLRMTPERM;
879 repbody->aclsize = 0;
882 repbody->valid |= OBD_MD_FLRMTPERM;
883 repbody->aclsize = sizeof(struct mdt_remote_perm);
886 #ifdef CONFIG_FS_POSIX_ACL
887 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
888 (reqbody->valid & OBD_MD_FLACL)) {
889 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
890 buffer->lb_len = req_capsule_get_size(pill,
891 &RMF_ACL, RCL_SERVER);
892 if (buffer->lb_len > 0) {
893 rc = mo_xattr_get(env, next, buffer,
894 XATTR_NAME_ACL_ACCESS);
896 if (rc == -ENODATA) {
897 repbody->aclsize = 0;
898 repbody->valid |= OBD_MD_FLACL;
900 } else if (rc == -EOPNOTSUPP) {
903 CERROR("%s: unable to read "DFID
905 mdt_obd_name(info->mti_mdt),
906 PFID(mdt_object_fid(o)), rc);
909 repbody->aclsize = rc;
910 repbody->valid |= OBD_MD_FLACL;
917 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
918 info->mti_mdt->mdt_lut.lut_mds_capa &&
919 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
920 struct lustre_capa *capa;
922 capa = req_capsule_server_get(pill, &RMF_CAPA1);
924 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
925 rc = mo_capa_get(env, next, capa, 0);
928 repbody->valid |= OBD_MD_FLMDSCAPA;
933 mdt_counter_incr(req, LPROC_MDT_GETATTR);
938 static int mdt_renew_capa(struct mdt_thread_info *info)
940 struct mdt_object *obj = info->mti_object;
941 struct mdt_body *body;
942 struct lustre_capa *capa, *c;
946 /* if object doesn't exist, or server has disabled capability,
947 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
950 if (!obj || !info->mti_mdt->mdt_lut.lut_oss_capa ||
951 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
954 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
955 LASSERT(body != NULL);
957 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
960 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
964 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
966 body->valid |= OBD_MD_FLOSSCAPA;
970 int mdt_getattr(struct tgt_session_info *tsi)
972 struct mdt_thread_info *info = tsi2mdt_info(tsi);
973 struct mdt_object *obj = info->mti_object;
974 struct req_capsule *pill = info->mti_pill;
975 struct mdt_body *reqbody;
976 struct mdt_body *repbody;
981 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
984 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
985 rc = req_capsule_server_pack(pill);
987 RETURN(err_serious(rc));
988 rc = mdt_renew_capa(info);
989 GOTO(out_shrink, rc);
992 LASSERT(obj != NULL);
993 LASSERT(lu_object_assert_exists(&obj->mot_obj));
995 mode = lu_object_attr(&obj->mot_obj);
997 /* old clients may not report needed easize, use max value then */
998 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
999 reqbody->eadatasize == 0 ?
1000 info->mti_mdt->mdt_max_mdsize :
1001 reqbody->eadatasize);
1003 rc = req_capsule_server_pack(pill);
1004 if (unlikely(rc != 0))
1005 GOTO(out, rc = err_serious(rc));
1007 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1008 LASSERT(repbody != NULL);
1009 repbody->eadatasize = 0;
1010 repbody->aclsize = 0;
1012 if (reqbody->valid & OBD_MD_FLRMTPERM)
1013 rc = mdt_init_ucred(info, reqbody);
1015 rc = mdt_check_ucred(info);
1017 GOTO(out_shrink, rc);
1019 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1022 * Don't check capability at all, because rename might getattr for
1023 * remote obj, and at that time no capability is available.
1025 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
1026 rc = mdt_getattr_internal(info, obj, 0);
1027 if (reqbody->valid & OBD_MD_FLRMTPERM)
1028 mdt_exit_ucred(info);
1031 mdt_client_compatibility(info);
1032 rc2 = mdt_fix_reply(info);
1036 mdt_thread_info_fini(info);
1040 int mdt_is_subdir(struct tgt_session_info *tsi)
1042 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1043 struct mdt_object *o = info->mti_object;
1044 struct req_capsule *pill = info->mti_pill;
1045 const struct mdt_body *body = info->mti_body;
1046 struct mdt_body *repbody;
1052 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1055 * We save last checked parent fid to @repbody->fid1 for remote
1058 LASSERT(fid_is_sane(&body->fid2));
1059 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
1060 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1061 &body->fid2, &repbody->fid1);
1062 if (rc == 0 || rc == -EREMOTE)
1063 repbody->valid |= OBD_MD_FLID;
1065 mdt_thread_info_fini(info);
1069 int mdt_swap_layouts(struct tgt_session_info *tsi)
1071 struct mdt_thread_info *info;
1072 struct ptlrpc_request *req = tgt_ses_req(tsi);
1073 struct obd_export *exp = req->rq_export;
1074 struct mdt_object *o1, *o2, *o;
1075 struct mdt_lock_handle *lh1, *lh2;
1076 struct mdc_swap_layouts *msl;
1080 /* client does not support layout lock, so layout swaping
1082 * FIXME: there is a problem for old clients which don't support
1083 * layout lock yet. If those clients have already opened the file
1084 * they won't be notified at all so that old layout may still be
1085 * used to do IO. This can be fixed after file release is landed by
1086 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1087 if (!exp_connect_layout(exp))
1088 RETURN(-EOPNOTSUPP);
1090 info = tsi2mdt_info(tsi);
1091 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1092 mdt_set_capainfo(info, 0, &info->mti_body->fid1,
1093 req_capsule_client_get(info->mti_pill,
1096 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1097 mdt_set_capainfo(info, 1, &info->mti_body->fid2,
1098 req_capsule_client_get(info->mti_pill,
1101 o1 = info->mti_object;
1102 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1103 &info->mti_body->fid2);
1105 GOTO(out, rc = PTR_ERR(o));
1107 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1108 GOTO(put, rc = -ENOENT);
1110 rc = lu_fid_cmp(&info->mti_body->fid1, &info->mti_body->fid2);
1111 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1117 /* permission check. Make sure the calling process having permission
1118 * to write both files. */
1119 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1124 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1129 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1131 GOTO(put, rc = -EPROTO);
1133 lh1 = &info->mti_lh[MDT_LH_NEW];
1134 mdt_lock_reg_init(lh1, LCK_EX);
1135 lh2 = &info->mti_lh[MDT_LH_OLD];
1136 mdt_lock_reg_init(lh2, LCK_EX);
1138 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1139 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1143 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1144 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1148 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1149 mdt_object_child(o2), msl->msl_flags);
1152 mdt_object_unlock(info, o2, lh2, rc);
1154 mdt_object_unlock(info, o1, lh1, rc);
1156 mdt_object_put(info->mti_env, o);
1158 mdt_thread_info_fini(info);
1162 static int mdt_raw_lookup(struct mdt_thread_info *info,
1163 struct mdt_object *parent,
1164 const struct lu_name *lname,
1165 struct ldlm_reply *ldlm_rep)
1167 struct md_object *next = mdt_object_child(info->mti_object);
1168 const struct mdt_body *reqbody = info->mti_body;
1169 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1170 struct mdt_body *repbody;
1174 if (reqbody->valid != OBD_MD_FLID)
1177 LASSERT(!info->mti_cross_ref);
1179 /* Only got the fid of this obj by name */
1180 fid_zero(child_fid);
1181 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1184 /* XXX is raw_lookup possible as intent operation? */
1187 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1190 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1192 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1195 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1196 repbody->fid1 = *child_fid;
1197 repbody->valid = OBD_MD_FLID;
1203 * UPDATE lock should be taken against parent, and be release before exit;
1204 * child_bits lock should be taken against child, and be returned back:
1205 * (1)normal request should release the child lock;
1206 * (2)intent request will grant the lock to client.
1208 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1209 struct mdt_lock_handle *lhc,
1211 struct ldlm_reply *ldlm_rep)
1213 struct ptlrpc_request *req = mdt_info_req(info);
1214 struct mdt_body *reqbody = NULL;
1215 struct mdt_object *parent = info->mti_object;
1216 struct mdt_object *child;
1217 struct md_object *next = mdt_object_child(parent);
1218 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1219 struct lu_name *lname = NULL;
1220 const char *name = NULL;
1222 struct mdt_lock_handle *lhp = NULL;
1223 struct ldlm_lock *lock;
1224 struct ldlm_res_id *res_id;
1231 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1232 LASSERT(ergo(is_resent,
1233 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1235 LASSERT(parent != NULL);
1236 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
1238 RETURN(err_serious(-EFAULT));
1240 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
1242 if (!info->mti_cross_ref) {
1244 * XXX: Check for "namelen == 0" is for getattr by fid
1245 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1246 * that is the name must contain at least one character and
1247 * the terminating '\0'
1250 reqbody = req_capsule_client_get(info->mti_pill,
1252 if (unlikely(reqbody == NULL))
1253 RETURN(err_serious(-EFAULT));
1255 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1256 RETURN(err_serious(-EINVAL));
1259 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1261 PFID(mdt_object_fid(parent)),
1262 PFID(&reqbody->fid2), ldlm_rep);
1264 lname = mdt_name(info->mti_env, (char *)name, namelen);
1265 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
1266 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1270 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1272 if (unlikely(!mdt_object_exists(parent)) && lname) {
1273 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1275 "Parent doesn't exist!\n");
1277 } else if (!info->mti_cross_ref) {
1278 LASSERTF(!mdt_object_remote(parent),
1279 "Parent "DFID" is on remote server\n",
1280 PFID(mdt_object_fid(parent)));
1283 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1291 if (info->mti_cross_ref) {
1292 /* Only getattr on the child. Parent is on another node. */
1293 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1295 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1296 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1299 /* Do not take lock for resent case. */
1300 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1301 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1302 lhc->mlh_reg_lh.cookie);
1303 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1304 &lock->l_resource->lr_name));
1305 LDLM_LOCK_PUT(lock);
1308 mdt_lock_handle_init(lhc);
1309 mdt_lock_reg_init(lhc, LCK_PR);
1312 * Object's name is on another MDS, no lookup lock is
1313 * needed here but update is.
1315 child_bits &= ~MDS_INODELOCK_LOOKUP;
1316 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1318 rc = mdt_object_lock(info, child, lhc, child_bits,
1322 /* Finally, we can get attr for child. */
1323 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1325 rc = mdt_getattr_internal(info, child, 0);
1326 if (unlikely(rc != 0))
1327 mdt_object_unlock(info, child, lhc, 1);
1333 /* step 1: lock parent only if parent is a directory */
1334 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1335 lhp = &info->mti_lh[MDT_LH_PARENT];
1336 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
1337 rc = mdt_object_lock(info, parent, lhp,
1338 MDS_INODELOCK_UPDATE,
1340 if (unlikely(rc != 0))
1344 /* step 2: lookup child's fid by name */
1345 fid_zero(child_fid);
1346 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1351 mdt_set_disposition(info, ldlm_rep,
1353 GOTO(out_parent, rc);
1355 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1357 *child_fid = reqbody->fid2;
1358 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1362 *step 3: find the child object by fid & lock it.
1363 * regardless if it is local or remote.
1365 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1367 if (unlikely(IS_ERR(child)))
1368 GOTO(out_parent, rc = PTR_ERR(child));
1370 /* Do not take lock for resent case. */
1371 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1372 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1373 lhc->mlh_reg_lh.cookie);
1375 res_id = &lock->l_resource->lr_name;
1376 if (!fid_res_name_eq(mdt_object_fid(child),
1377 &lock->l_resource->lr_name)) {
1378 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1379 &lock->l_resource->lr_name),
1380 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1381 PLDLMRES(lock->l_resource),
1382 PFID(mdt_object_fid(parent)));
1383 CWARN("Although resent, but still not get child lock"
1384 "parent:"DFID" child:"DFID"\n",
1385 PFID(mdt_object_fid(parent)),
1386 PFID(mdt_object_fid(child)));
1387 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1388 LDLM_LOCK_PUT(lock);
1391 LDLM_LOCK_PUT(lock);
1394 bool try_layout = false;
1397 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1398 mdt_lock_handle_init(lhc);
1399 mdt_lock_reg_init(lhc, LCK_PR);
1401 if (!mdt_object_exists(child)) {
1402 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1404 "Object doesn't exist!\n");
1405 GOTO(out_child, rc = -ENOENT);
1408 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1409 mdt_object_exists(child) && !mdt_object_remote(child)) {
1410 struct md_attr *ma = &info->mti_attr;
1413 ma->ma_need = MA_INODE;
1414 rc = mdt_attr_get_complex(info, child, ma);
1415 if (unlikely(rc != 0))
1416 GOTO(out_child, rc);
1418 /* If the file has not been changed for some time, we
1419 * return not only a LOOKUP lock, but also an UPDATE
1420 * lock and this might save us RPC on later STAT. For
1421 * directories, it also let negative dentry cache start
1422 * working for this dir. */
1423 if (ma->ma_valid & MA_INODE &&
1424 ma->ma_attr.la_valid & LA_CTIME &&
1425 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1426 ma->ma_attr.la_ctime < cfs_time_current_sec())
1427 child_bits |= MDS_INODELOCK_UPDATE;
1430 /* layout lock must be granted in a best-effort way
1431 * for IT operations */
1432 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1433 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1434 exp_connect_layout(info->mti_exp) &&
1435 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1437 /* try to grant layout lock for regular file. */
1443 child_bits |= MDS_INODELOCK_LAYOUT;
1444 /* try layout lock, it may fail to be granted due to
1445 * contention at LOOKUP or UPDATE */
1446 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1448 child_bits &= ~MDS_INODELOCK_LAYOUT;
1449 LASSERT(child_bits != 0);
1450 rc = mdt_object_lock(info, child, lhc,
1451 child_bits, MDT_CROSS_LOCK);
1456 rc = mdt_object_lock(info, child, lhc, child_bits,
1459 if (unlikely(rc != 0))
1460 GOTO(out_child, rc);
1463 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1464 /* Get MA_SOM attributes if update lock is given. */
1466 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1467 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1470 /* finally, we can get attr for child. */
1471 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1472 rc = mdt_getattr_internal(info, child, ma_need);
1473 if (unlikely(rc != 0)) {
1474 mdt_object_unlock(info, child, lhc, 1);
1476 /* Debugging code. */
1477 res_id = &lock->l_resource->lr_name;
1478 LDLM_DEBUG(lock, "Returning lock to client");
1479 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1480 &lock->l_resource->lr_name),
1481 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1482 PLDLMRES(lock->l_resource),
1483 PFID(mdt_object_fid(child)));
1484 if (mdt_object_exists(child) && !mdt_object_remote(child))
1485 mdt_pack_size2body(info, child);
1488 LDLM_LOCK_PUT(lock);
1492 mdt_object_put(info->mti_env, child);
1495 mdt_object_unlock(info, parent, lhp, 1);
1499 /* normal handler: should release the child lock */
1500 int mdt_getattr_name(struct tgt_session_info *tsi)
1502 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1503 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1504 struct mdt_body *reqbody;
1505 struct mdt_body *repbody;
1509 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1510 LASSERT(reqbody != NULL);
1511 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1512 LASSERT(repbody != NULL);
1514 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1515 repbody->eadatasize = 0;
1516 repbody->aclsize = 0;
1518 rc = mdt_init_ucred(info, reqbody);
1520 GOTO(out_shrink, rc);
1522 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1523 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1524 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1525 lhc->mlh_reg_lh.cookie = 0;
1527 mdt_exit_ucred(info);
1530 mdt_client_compatibility(info);
1531 rc2 = mdt_fix_reply(info);
1534 mdt_thread_info_fini(info);
1538 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1539 void *karg, void *uarg);
1541 int mdt_set_info(struct tgt_session_info *tsi)
1543 struct ptlrpc_request *req = tgt_ses_req(tsi);
1546 int keylen, vallen, rc = 0;
1550 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1552 DEBUG_REQ(D_HA, req, "no set_info key");
1553 RETURN(err_serious(-EFAULT));
1556 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1559 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1561 DEBUG_REQ(D_HA, req, "no set_info val");
1562 RETURN(err_serious(-EFAULT));
1565 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1568 /* Swab any part of val you need to here */
1569 if (KEY_IS(KEY_READ_ONLY)) {
1570 spin_lock(&req->rq_export->exp_lock);
1572 *exp_connect_flags_ptr(req->rq_export) |=
1575 *exp_connect_flags_ptr(req->rq_export) &=
1576 ~OBD_CONNECT_RDONLY;
1577 spin_unlock(&req->rq_export->exp_lock);
1578 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1579 struct changelog_setinfo *cs = val;
1581 if (vallen != sizeof(*cs)) {
1582 CERROR("%s: bad changelog_clear setinfo size %d\n",
1583 tgt_name(tsi->tsi_tgt), vallen);
1586 if (ptlrpc_req_need_swab(req)) {
1587 __swab64s(&cs->cs_recno);
1588 __swab32s(&cs->cs_id);
1591 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1599 int mdt_readpage(struct tgt_session_info *tsi)
1601 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1602 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1603 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1604 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1605 struct mdt_body *repbody;
1611 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1612 RETURN(err_serious(-ENOMEM));
1614 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1615 if (repbody == NULL || reqbody == NULL)
1616 RETURN(err_serious(-EFAULT));
1619 * prepare @rdpg before calling lower layers and transfer itself. Here
1620 * reqbody->size contains offset of where to start to read and
1621 * reqbody->nlink contains number bytes to read.
1623 rdpg->rp_hash = reqbody->size;
1624 if (rdpg->rp_hash != reqbody->size) {
1625 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1626 rdpg->rp_hash, reqbody->size);
1630 rdpg->rp_attrs = reqbody->mode;
1631 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1632 rdpg->rp_attrs |= LUDA_64BITHASH;
1633 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1634 exp_max_brw_size(tsi->tsi_exp));
1635 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1637 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1638 if (rdpg->rp_pages == NULL)
1641 for (i = 0; i < rdpg->rp_npages; ++i) {
1642 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1643 if (rdpg->rp_pages[i] == NULL)
1644 GOTO(free_rdpg, rc = -ENOMEM);
1647 /* call lower layers to fill allocated pages with directory data */
1648 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1650 GOTO(free_rdpg, rc);
1652 /* send pages to client */
1653 rc = tgt_sendpage(tsi, rdpg, rc);
1658 for (i = 0; i < rdpg->rp_npages; i++)
1659 if (rdpg->rp_pages[i] != NULL)
1660 __free_page(rdpg->rp_pages[i]);
1661 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1663 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1669 static int mdt_reint_internal(struct mdt_thread_info *info,
1670 struct mdt_lock_handle *lhc,
1673 struct req_capsule *pill = info->mti_pill;
1674 struct mdt_body *repbody;
1679 rc = mdt_reint_unpack(info, op);
1681 CERROR("Can't unpack reint, rc %d\n", rc);
1682 RETURN(err_serious(rc));
1685 /* for replay (no_create) lmm is not needed, client has it already */
1686 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1687 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1688 info->mti_rr.rr_eadatalen);
1690 /* llog cookies are always 0, the field is kept for compatibility */
1691 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1692 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1694 rc = req_capsule_server_pack(pill);
1696 CERROR("Can't pack response, rc %d\n", rc);
1697 RETURN(err_serious(rc));
1700 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1701 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1703 repbody->eadatasize = 0;
1704 repbody->aclsize = 0;
1707 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1709 /* for replay no cookkie / lmm need, because client have this already */
1710 if (info->mti_spec.no_create)
1711 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1712 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1714 rc = mdt_init_ucred_reint(info);
1716 GOTO(out_shrink, rc);
1718 rc = mdt_fix_attr_ucred(info, op);
1720 GOTO(out_ucred, rc = err_serious(rc));
1722 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1723 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1724 GOTO(out_ucred, rc);
1726 rc = mdt_reint_rec(info, lhc);
1729 mdt_exit_ucred(info);
1731 mdt_client_compatibility(info);
1732 rc2 = mdt_fix_reply(info);
1738 static long mdt_reint_opcode(struct ptlrpc_request *req,
1739 const struct req_format **fmt)
1741 struct mdt_device *mdt;
1742 struct mdt_rec_reint *rec;
1745 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1747 opc = rec->rr_opcode;
1748 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1749 if (opc < REINT_MAX && fmt[opc] != NULL)
1750 req_capsule_extend(&req->rq_pill, fmt[opc]);
1752 mdt = mdt_exp2dev(req->rq_export);
1753 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1754 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1755 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1756 opc = err_serious(-EFAULT);
1759 opc = err_serious(-EFAULT);
1764 int mdt_reint(struct tgt_session_info *tsi)
1768 static const struct req_format *reint_fmts[REINT_MAX] = {
1769 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1770 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1771 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1772 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1773 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1774 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1775 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1776 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK
1781 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1783 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1785 * No lock possible here from client to pass it to reint code
1788 rc = mdt_reint_internal(info, NULL, opc);
1789 mdt_thread_info_fini(info);
1794 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1798 /* this should sync the whole device */
1799 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1801 struct dt_device *dt = mdt->mdt_bottom;
1805 rc = dt->dd_ops->dt_sync(env, dt);
1809 /* this should sync this object */
1810 static int mdt_object_sync(struct mdt_thread_info *info)
1812 struct md_object *next;
1816 if (!mdt_object_exists(info->mti_object)) {
1817 CWARN("Non existing object "DFID"!\n",
1818 PFID(mdt_object_fid(info->mti_object)));
1821 next = mdt_object_child(info->mti_object);
1822 rc = mo_object_sync(info->mti_env, next);
1827 int mdt_sync(struct tgt_session_info *tsi)
1829 struct ptlrpc_request *req = tgt_ses_req(tsi);
1830 struct req_capsule *pill = tsi->tsi_pill;
1831 struct mdt_body *body;
1836 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1837 RETURN(err_serious(-ENOMEM));
1839 if (fid_seq(&tsi->tsi_mdt_body->fid1) == 0) {
1840 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1842 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1844 /* sync an object */
1845 rc = mdt_object_sync(info);
1847 const struct lu_fid *fid;
1848 struct lu_attr *la = &info->mti_attr.ma_attr;
1850 info->mti_attr.ma_need = MA_INODE;
1851 info->mti_attr.ma_valid = 0;
1852 rc = mdt_attr_get_complex(info, info->mti_object,
1855 body = req_capsule_server_get(pill,
1857 fid = mdt_object_fid(info->mti_object);
1858 mdt_pack_attr2body(info, body, la, fid);
1861 mdt_thread_info_fini(info);
1864 mdt_counter_incr(req, LPROC_MDT_SYNC);
1870 * Handle quota control requests to consult current usage/limit, but also
1871 * to configure quota enforcement
1873 int mdt_quotactl(struct tgt_session_info *tsi)
1875 struct obd_export *exp = tsi->tsi_exp;
1876 struct req_capsule *pill = tsi->tsi_pill;
1877 struct obd_quotactl *oqctl, *repoqc;
1879 struct mdt_device *mdt = mdt_exp2dev(exp);
1880 struct lu_device *qmt = mdt->mdt_qmt_dev;
1883 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1885 RETURN(err_serious(-EPROTO));
1887 rc = req_capsule_server_pack(pill);
1889 RETURN(err_serious(rc));
1891 switch (oqctl->qc_cmd) {
1893 case LUSTRE_Q_INVALIDATE:
1894 case LUSTRE_Q_FINVALIDATE:
1898 /* deprecated, not used any more */
1899 RETURN(-EOPNOTSUPP);
1900 /* master quotactl */
1906 RETURN(-EOPNOTSUPP);
1907 /* slave quotactl */
1912 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1916 /* map uid/gid for remote client */
1918 if (exp_connect_rmtclient(exp)) {
1919 struct lustre_idmap_table *idmap;
1921 idmap = exp->exp_mdt_data.med_idmap;
1923 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1924 oqctl->qc_cmd != Q_GETINFO))
1927 if (oqctl->qc_type == USRQUOTA)
1928 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1930 else if (oqctl->qc_type == GRPQUOTA)
1931 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1936 if (id == CFS_IDMAP_NOTFOUND) {
1937 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
1942 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1944 RETURN(err_serious(-EFAULT));
1946 if (oqctl->qc_id != id)
1947 swap(oqctl->qc_id, id);
1949 switch (oqctl->qc_cmd) {
1955 /* forward quotactl request to QMT */
1956 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
1961 /* slave quotactl */
1962 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
1967 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1971 if (oqctl->qc_id != id)
1972 swap(oqctl->qc_id, id);
1978 /** clone llog ctxt from child (mdd)
1979 * This allows remote llog (replicator) access.
1980 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1981 * context was originally set up, or we can handle them directly.
1982 * I choose the latter, but that means I need any llog
1983 * contexts set up by child to be accessable by the mdt. So we clone the
1984 * context into our context list here.
1986 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1989 struct md_device *next = mdt->mdt_child;
1990 struct llog_ctxt *ctxt;
1993 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1996 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1997 if (rc || ctxt == NULL) {
2001 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2003 CERROR("Can't set mdt ctxt %d\n", rc);
2008 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2009 struct mdt_device *mdt, int idx)
2011 struct llog_ctxt *ctxt;
2013 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2016 /* Put once for the get we just did, and once for the clone */
2017 llog_ctxt_put(ctxt);
2018 llog_ctxt_put(ctxt);
2023 * sec context handlers
2025 int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2029 rc = mdt_handle_idmap(tsi);
2031 struct ptlrpc_request *req = tgt_ses_req(tsi);
2034 opc = lustre_msg_get_opc(req->rq_reqmsg);
2035 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2036 sptlrpc_svc_ctx_invalidate(req);
2039 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2045 * quota request handlers
2047 int mdt_quota_dqacq(struct tgt_session_info *tsi)
2049 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2050 struct lu_device *qmt = mdt->mdt_qmt_dev;
2055 RETURN(err_serious(-EOPNOTSUPP));
2057 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2061 struct mdt_object *mdt_object_new(const struct lu_env *env,
2062 struct mdt_device *d,
2063 const struct lu_fid *f)
2065 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2066 struct lu_object *o;
2067 struct mdt_object *m;
2070 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2071 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2072 if (unlikely(IS_ERR(o)))
2073 m = (struct mdt_object *)o;
2079 struct mdt_object *mdt_object_find(const struct lu_env *env,
2080 struct mdt_device *d,
2081 const struct lu_fid *f)
2083 struct lu_object *o;
2084 struct mdt_object *m;
2087 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2088 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2089 if (unlikely(IS_ERR(o)))
2090 m = (struct mdt_object *)o;
2098 * Asyncronous commit for mdt device.
2100 * Pass asynchonous commit call down the MDS stack.
2102 * \param env environment
2103 * \param mdt the mdt device
2105 static void mdt_device_commit_async(const struct lu_env *env,
2106 struct mdt_device *mdt)
2108 struct dt_device *dt = mdt->mdt_bottom;
2111 rc = dt->dd_ops->dt_commit_async(env, dt);
2112 if (unlikely(rc != 0))
2113 CWARN("async commit start failed with rc = %d", rc);
2117 * Mark the lock as "synchonous".
2119 * Mark the lock to deffer transaction commit to the unlock time.
2121 * \param lock the lock to mark as "synchonous"
2123 * \see mdt_is_lock_sync
2124 * \see mdt_save_lock
2126 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2128 lock->l_ast_data = (void*)1;
2132 * Check whehter the lock "synchonous" or not.
2134 * \param lock the lock to check
2135 * \retval 1 the lock is "synchonous"
2136 * \retval 0 the lock isn't "synchronous"
2138 * \see mdt_set_lock_sync
2139 * \see mdt_save_lock
2141 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2143 return lock->l_ast_data != NULL;
2147 * Blocking AST for mdt locks.
2149 * Starts transaction commit if in case of COS lock conflict or
2150 * deffers such a commit to the mdt_save_lock.
2152 * \param lock the lock which blocks a request or cancelling lock
2153 * \param desc unused
2154 * \param data unused
2155 * \param flag indicates whether this cancelling or blocking callback
2157 * \see ldlm_blocking_ast_nocheck
2159 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2160 void *data, int flag)
2162 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2163 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2167 if (flag == LDLM_CB_CANCELING)
2169 lock_res_and_lock(lock);
2170 if (lock->l_blocking_ast != mdt_blocking_ast) {
2171 unlock_res_and_lock(lock);
2174 if (mdt_cos_is_enabled(mdt) &&
2175 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2176 lock->l_blocking_lock != NULL &&
2177 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2178 mdt_set_lock_sync(lock);
2180 rc = ldlm_blocking_ast_nocheck(lock);
2182 /* There is no lock conflict if l_blocking_lock == NULL,
2183 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2184 * when the last reference to a local lock was released */
2185 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2188 rc = lu_env_init(&env, LCT_LOCAL);
2189 if (unlikely(rc != 0))
2190 CWARN("lu_env initialization failed with rc = %d,"
2191 "cannot start asynchronous commit\n", rc);
2193 mdt_device_commit_async(&env, mdt);
2199 int mdt_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2200 void *data, int flag)
2202 struct lustre_handle lockh;
2206 case LDLM_CB_BLOCKING:
2207 ldlm_lock2handle(lock, &lockh);
2208 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2210 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2214 case LDLM_CB_CANCELING:
2215 LDLM_DEBUG(lock, "Revoke remote lock\n");
2223 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2224 struct mdt_object *o, struct lustre_handle *lh,
2225 ldlm_mode_t mode, __u64 ibits)
2227 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2228 ldlm_policy_data_t *policy = &mti->mti_policy;
2232 LASSERT(mdt_object_remote(o));
2234 LASSERT(ibits & MDS_INODELOCK_UPDATE);
2236 memset(einfo, 0, sizeof(*einfo));
2237 einfo->ei_type = LDLM_IBITS;
2238 einfo->ei_mode = mode;
2239 einfo->ei_cb_bl = mdt_md_blocking_ast;
2240 einfo->ei_cb_cp = ldlm_completion_ast;
2242 memset(policy, 0, sizeof(*policy));
2243 policy->l_inodebits.bits = ibits;
2245 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2250 static int mdt_object_lock0(struct mdt_thread_info *info, struct mdt_object *o,
2251 struct mdt_lock_handle *lh, __u64 ibits,
2252 bool nonblock, int locality)
2254 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2255 ldlm_policy_data_t *policy = &info->mti_policy;
2256 struct ldlm_res_id *res_id = &info->mti_res_id;
2261 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2262 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2263 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2264 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2266 if (mdt_object_remote(o)) {
2267 if (locality == MDT_CROSS_LOCK) {
2268 ibits &= ~(MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM);
2269 ibits |= MDS_INODELOCK_LOOKUP;
2272 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM)),
2273 "%s: wrong bit "LPX64" for remote obj "DFID"\n",
2274 mdt_obd_name(info->mti_mdt), ibits,
2275 PFID(mdt_object_fid(o)));
2276 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2278 /* No PDO lock on remote object */
2279 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2282 if (lh->mlh_type == MDT_PDO_LOCK) {
2283 /* check for exists after object is locked */
2284 if (mdt_object_exists(o) == 0) {
2285 /* Non-existent object shouldn't have PDO lock */
2288 /* Non-dir object shouldn't have PDO lock */
2289 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2294 memset(policy, 0, sizeof(*policy));
2295 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2297 dlmflags = LDLM_FL_ATOMIC_CB;
2299 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2302 * Take PDO lock on whole directory and build correct @res_id for lock
2303 * on part of directory.
2305 if (lh->mlh_pdo_hash != 0) {
2306 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2307 mdt_lock_pdo_mode(info, o, lh);
2308 if (lh->mlh_pdo_mode != LCK_NL) {
2310 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2311 * is never going to be sent to client and we do not
2312 * want it slowed down due to possible cancels.
2314 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2315 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2316 policy, res_id, dlmflags,
2317 &info->mti_exp->exp_handle.h_cookie);
2323 * Finish res_id initializing by name hash marking part of
2324 * directory which is taking modification.
2326 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2329 policy->l_inodebits.bits = ibits;
2332 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2333 * going to be sent to client. If it is - mdt_intent_policy() path will
2334 * fix it up and turn FL_LOCAL flag off.
2336 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2337 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2338 &info->mti_exp->exp_handle.h_cookie);
2340 mdt_object_unlock(info, o, lh, 1);
2341 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2342 lh->mlh_pdo_hash != 0 &&
2343 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2344 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2350 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2351 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2353 return mdt_object_lock0(info, o, lh, ibits, false, locality);
2356 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2357 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2359 struct mdt_lock_handle tmp = *lh;
2362 rc = mdt_object_lock0(info, o, &tmp, ibits, true, locality);
2370 * Save a lock within request object.
2372 * Keep the lock referenced until whether client ACK or transaction
2373 * commit happens or release the lock immediately depending on input
2374 * parameters. If COS is ON, a write lock is converted to COS lock
2377 * \param info thead info object
2378 * \param h lock handle
2379 * \param mode lock mode
2380 * \param decref force immediate lock releasing
2383 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2384 ldlm_mode_t mode, int decref)
2388 if (lustre_handle_is_used(h)) {
2389 if (decref || !info->mti_has_trans ||
2390 !(mode & (LCK_PW | LCK_EX))){
2391 mdt_fid_unlock(h, mode);
2393 struct mdt_device *mdt = info->mti_mdt;
2394 struct ldlm_lock *lock = ldlm_handle2lock(h);
2395 struct ptlrpc_request *req = mdt_info_req(info);
2398 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2400 /* there is no request if mdt_object_unlock() is called
2401 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2402 if (likely(req != NULL)) {
2403 CDEBUG(D_HA, "request = %p reply state = %p"
2404 " transno = "LPD64"\n", req,
2405 req->rq_reply_state, req->rq_transno);
2406 if (mdt_cos_is_enabled(mdt)) {
2408 ldlm_lock_downgrade(lock, LCK_COS);
2411 ptlrpc_save_lock(req, h, mode, no_ack);
2413 ldlm_lock_decref(h, mode);
2415 if (mdt_is_lock_sync(lock)) {
2416 CDEBUG(D_HA, "found sync-lock,"
2417 " async commit started\n");
2418 mdt_device_commit_async(info->mti_env,
2421 LDLM_LOCK_PUT(lock);
2430 * Unlock mdt object.
2432 * Immeditely release the regular lock and the PDO lock or save the
2433 * lock in reqeuest and keep them referenced until client ACK or
2434 * transaction commit.
2436 * \param info thread info object
2437 * \param o mdt object
2438 * \param lh mdt lock handle referencing regular and PDO locks
2439 * \param decref force immediate lock releasing
2441 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2442 struct mdt_lock_handle *lh, int decref)
2446 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2447 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2449 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2450 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2455 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2456 const struct lu_fid *f,
2457 struct mdt_lock_handle *lh,
2460 struct mdt_object *o;
2462 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2466 rc = mdt_object_lock(info, o, lh, ibits,
2469 mdt_object_put(info->mti_env, o);
2476 void mdt_object_unlock_put(struct mdt_thread_info * info,
2477 struct mdt_object * o,
2478 struct mdt_lock_handle *lh,
2481 mdt_object_unlock(info, o, lh, decref);
2482 mdt_object_put(info->mti_env, o);
2486 * Generic code handling requests that have struct mdt_body passed in:
2488 * - extract mdt_body from request and save it in @info, if present;
2490 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2493 * - if HABEO_CORPUS flag is set for this request type check whether object
2494 * actually exists on storage (lu_object_exists()).
2497 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2499 const struct mdt_body *body;
2500 struct mdt_object *obj;
2501 const struct lu_env *env;
2502 struct req_capsule *pill;
2506 env = info->mti_env;
2507 pill = info->mti_pill;
2509 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2513 if (!(body->valid & OBD_MD_FLID))
2516 if (!fid_is_sane(&body->fid1)) {
2517 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2522 * Do not get size or any capa fields before we check that request
2523 * contains capa actually. There are some requests which do not, for
2524 * instance MDS_IS_SUBDIR.
2526 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2527 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2528 mdt_set_capainfo(info, 0, &body->fid1,
2529 req_capsule_client_get(pill, &RMF_CAPA1));
2531 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2533 if ((flags & HABEO_CORPUS) &&
2534 !mdt_object_exists(obj)) {
2535 mdt_object_put(env, obj);
2536 /* for capability renew ENOENT will be handled in
2538 if (body->valid & OBD_MD_FLOSSCAPA)
2543 info->mti_object = obj;
2552 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2554 struct req_capsule *pill = info->mti_pill;
2558 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2559 rc = mdt_body_unpack(info, flags);
2563 if (rc == 0 && (flags & HABEO_REFERO)) {
2565 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2566 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2567 info->mti_body->eadatasize);
2568 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2569 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2572 rc = req_capsule_server_pack(pill);
2577 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2579 struct md_device *next = m->mdt_child;
2581 return next->md_ops->mdo_init_capa_ctxt(env, next,
2582 m->mdt_lut.lut_mds_capa,
2583 m->mdt_capa_timeout,
2588 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2590 lh->mlh_type = MDT_NUL_LOCK;
2591 lh->mlh_reg_lh.cookie = 0ull;
2592 lh->mlh_reg_mode = LCK_MINMODE;
2593 lh->mlh_pdo_lh.cookie = 0ull;
2594 lh->mlh_pdo_mode = LCK_MINMODE;
2595 lh->mlh_rreg_lh.cookie = 0ull;
2596 lh->mlh_rreg_mode = LCK_MINMODE;
2599 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2601 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2602 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2606 * Initialize fields of struct mdt_thread_info. Other fields are left in
2607 * uninitialized state, because it's too expensive to zero out whole
2608 * mdt_thread_info (> 1K) on each request arrival.
2610 void mdt_thread_info_init(struct ptlrpc_request *req,
2611 struct mdt_thread_info *info)
2615 info->mti_pill = &req->rq_pill;
2618 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2619 mdt_lock_handle_init(&info->mti_lh[i]);
2621 /* mdt device: it can be NULL while CONNECT */
2622 if (req->rq_export) {
2623 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2624 info->mti_exp = req->rq_export;
2626 info->mti_mdt = NULL;
2627 info->mti_env = req->rq_svc_thread->t_env;
2628 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2629 info->mti_mos = NULL;
2631 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2632 info->mti_big_buf = LU_BUF_NULL;
2633 info->mti_body = NULL;
2634 info->mti_object = NULL;
2635 info->mti_dlm_req = NULL;
2636 info->mti_has_trans = 0;
2637 info->mti_cross_ref = 0;
2638 info->mti_opdata = 0;
2639 info->mti_big_lmm_used = 0;
2641 /* To not check for split by default. */
2642 info->mti_spec.no_create = 0;
2643 info->mti_spec.sp_rm_entry = 0;
2646 void mdt_thread_info_fini(struct mdt_thread_info *info)
2650 if (info->mti_object != NULL) {
2651 mdt_object_put(info->mti_env, info->mti_object);
2652 info->mti_object = NULL;
2655 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2656 mdt_lock_handle_fini(&info->mti_lh[i]);
2657 info->mti_env = NULL;
2658 info->mti_pill = NULL;
2659 info->mti_exp = NULL;
2661 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2662 lu_buf_free(&info->mti_big_buf);
2665 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2667 struct mdt_thread_info *mti;
2668 struct lustre_capa *lc;
2670 mti = mdt_th_info(tsi->tsi_env);
2671 LASSERT(mti != NULL);
2673 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2674 if (tsi->tsi_corpus != NULL) {
2675 struct req_capsule *pill = tsi->tsi_pill;
2677 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2678 lu_object_get(tsi->tsi_corpus);
2681 * XXX: must be part of tgt_mdt_body_unpack but moved here
2682 * due to mdt_set_capainfo().
2684 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2685 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2686 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2687 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->fid1, lc);
2690 mti->mti_body = tsi->tsi_mdt_body;
2691 mti->mti_dlm_req = tsi->tsi_dlm_req;
2696 int mdt_tgt_connect(struct tgt_session_info *tsi)
2698 struct ptlrpc_request *req = tgt_ses_req(tsi);
2703 rc = tgt_connect(tsi);
2707 rc = mdt_init_idmap(tsi);
2712 obd_disconnect(class_export_get(req->rq_export));
2731 static int mdt_intent_getattr(enum mdt_it_code opcode,
2732 struct mdt_thread_info *info,
2733 struct ldlm_lock **,
2736 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2737 struct mdt_thread_info *info,
2738 struct ldlm_lock **lockp,
2741 static int mdt_intent_layout(enum mdt_it_code opcode,
2742 struct mdt_thread_info *info,
2743 struct ldlm_lock **,
2745 static int mdt_intent_reint(enum mdt_it_code opcode,
2746 struct mdt_thread_info *info,
2747 struct ldlm_lock **,
2750 static struct mdt_it_flavor {
2751 const struct req_format *it_fmt;
2753 int (*it_act)(enum mdt_it_code ,
2754 struct mdt_thread_info *,
2755 struct ldlm_lock **,
2758 } mdt_it_flavor[] = {
2760 .it_fmt = &RQF_LDLM_INTENT,
2761 /*.it_flags = HABEO_REFERO,*/
2763 .it_act = mdt_intent_reint,
2764 .it_reint = REINT_OPEN
2767 .it_fmt = &RQF_LDLM_INTENT,
2769 * OCREAT is not a MUTABOR request as if the file
2771 * We do the extra check of OBD_CONNECT_RDONLY in
2772 * mdt_reint_open() when we really need to create
2776 .it_act = mdt_intent_reint,
2777 .it_reint = REINT_OPEN
2780 .it_fmt = &RQF_LDLM_INTENT,
2781 .it_flags = MUTABOR,
2782 .it_act = mdt_intent_reint,
2783 .it_reint = REINT_CREATE
2785 [MDT_IT_GETATTR] = {
2786 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2787 .it_flags = HABEO_REFERO,
2788 .it_act = mdt_intent_getattr
2790 [MDT_IT_READDIR] = {
2796 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2797 .it_flags = HABEO_REFERO,
2798 .it_act = mdt_intent_getattr
2801 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2802 .it_flags = MUTABOR,
2804 .it_reint = REINT_UNLINK
2808 .it_flags = MUTABOR,
2811 [MDT_IT_GETXATTR] = {
2812 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
2813 .it_flags = HABEO_CORPUS,
2814 .it_act = mdt_intent_getxattr
2817 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
2819 .it_act = mdt_intent_layout
2823 int mdt_intent_lock_replace(struct mdt_thread_info *info,
2824 struct ldlm_lock **lockp,
2825 struct ldlm_lock *new_lock,
2826 struct mdt_lock_handle *lh,
2829 struct ptlrpc_request *req = mdt_info_req(info);
2830 struct ldlm_lock *lock = *lockp;
2833 * Get new lock only for cases when possible resent did not find any
2836 if (new_lock == NULL)
2837 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
2839 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2840 lh->mlh_reg_lh.cookie = 0;
2844 LASSERTF(new_lock != NULL,
2845 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2848 * If we've already given this lock to a client once, then we should
2849 * have no readers or writers. Otherwise, we should have one reader
2850 * _or_ writer ref (which will be zeroed below) before returning the
2853 if (new_lock->l_export == req->rq_export) {
2854 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2856 LASSERT(new_lock->l_export == NULL);
2857 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2862 if (new_lock->l_export == req->rq_export) {
2864 * Already gave this to the client, which means that we
2865 * reconstructed a reply.
2867 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2869 lh->mlh_reg_lh.cookie = 0;
2870 RETURN(ELDLM_LOCK_REPLACED);
2874 * Fixup the lock to be given to the client.
2876 lock_res_and_lock(new_lock);
2877 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
2878 * possible blocking AST. */
2879 while (new_lock->l_readers > 0) {
2880 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
2881 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2882 new_lock->l_readers--;
2884 while (new_lock->l_writers > 0) {
2885 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
2886 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2887 new_lock->l_writers--;
2890 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
2891 new_lock->l_blocking_ast = lock->l_blocking_ast;
2892 new_lock->l_completion_ast = lock->l_completion_ast;
2893 new_lock->l_remote_handle = lock->l_remote_handle;
2894 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2896 unlock_res_and_lock(new_lock);
2898 cfs_hash_add(new_lock->l_export->exp_lock_hash,
2899 &new_lock->l_remote_handle,
2900 &new_lock->l_exp_hash);
2902 LDLM_LOCK_RELEASE(new_lock);
2903 lh->mlh_reg_lh.cookie = 0;
2905 RETURN(ELDLM_LOCK_REPLACED);
2908 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
2909 struct ldlm_lock *new_lock,
2910 struct ldlm_lock **old_lock,
2911 struct mdt_lock_handle *lh)
2913 struct ptlrpc_request *req = mdt_info_req(info);
2914 struct obd_export *exp = req->rq_export;
2915 struct lustre_handle remote_hdl;
2916 struct ldlm_request *dlmreq;
2917 struct ldlm_lock *lock;
2919 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2922 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2923 remote_hdl = dlmreq->lock_handle[0];
2925 /* In the function below, .hs_keycmp resolves to
2926 * ldlm_export_lock_keycmp() */
2927 /* coverity[overrun-buffer-val] */
2928 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
2930 if (lock != new_lock) {
2931 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
2932 lh->mlh_reg_mode = lock->l_granted_mode;
2934 LDLM_DEBUG(lock, "Restoring lock cookie");
2935 DEBUG_REQ(D_DLMTRACE, req,
2936 "restoring lock cookie "LPX64,
2937 lh->mlh_reg_lh.cookie);
2939 *old_lock = LDLM_LOCK_GET(lock);
2940 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
2944 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
2948 * If the xid matches, then we know this is a resent request, and allow
2949 * it. (It's probably an OPEN, for which we don't send a lock.
2951 if (req_xid_is_last(req))
2955 * This remote handle isn't enqueued, so we never received or processed
2956 * this request. Clear MSG_RESENT, because it can be handled like any
2957 * normal request now.
2959 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2961 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
2965 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2966 struct mdt_thread_info *info,
2967 struct ldlm_lock **lockp,
2970 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
2971 struct ldlm_reply *ldlm_rep = NULL;
2975 * Initialize lhc->mlh_reg_lh either from a previously granted lock
2976 * (for the resend case) or a new lock. Below we will use it to
2977 * replace the original lock.
2979 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
2980 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2981 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
2982 rc = mdt_object_lock(info, info->mti_object, lhc,
2983 MDS_INODELOCK_XATTR,
2989 grc = mdt_getxattr(info);
2991 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
2993 if (mdt_info_req(info)->rq_repmsg != NULL)
2994 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2995 if (ldlm_rep == NULL)
2996 RETURN(err_serious(-EFAULT));
2998 ldlm_rep->lock_policy_res2 = grc;
3003 static int mdt_intent_getattr(enum mdt_it_code opcode,
3004 struct mdt_thread_info *info,
3005 struct ldlm_lock **lockp,
3008 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3009 struct ldlm_lock *new_lock = NULL;
3011 struct ldlm_reply *ldlm_rep;
3012 struct ptlrpc_request *req;
3013 struct mdt_body *reqbody;
3014 struct mdt_body *repbody;
3018 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3021 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3024 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3025 repbody->eadatasize = 0;
3026 repbody->aclsize = 0;
3030 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3032 case MDT_IT_GETATTR:
3033 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3037 CERROR("Unsupported intent (%d)\n", opcode);
3038 GOTO(out_shrink, rc = -EINVAL);
3041 rc = mdt_init_ucred(info, reqbody);
3043 GOTO(out_shrink, rc);
3045 req = info->mti_pill->rc_req;
3046 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3047 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3049 /* Get lock from request for possible resent case. */
3050 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3052 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3053 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3055 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3056 ldlm_rep->lock_policy_res2 = 0;
3057 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3058 ldlm_rep->lock_policy_res2) {
3059 lhc->mlh_reg_lh.cookie = 0ull;
3060 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3063 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3066 mdt_exit_ucred(info);
3068 mdt_client_compatibility(info);
3069 rc2 = mdt_fix_reply(info);
3075 static int mdt_intent_layout(enum mdt_it_code opcode,
3076 struct mdt_thread_info *info,
3077 struct ldlm_lock **lockp,
3080 struct layout_intent *layout;
3082 struct mdt_object *obj = NULL;
3083 struct md_object *child = NULL;
3087 if (opcode != MDT_IT_LAYOUT) {
3088 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3093 fid = &info->mti_tmp_fid2;
3094 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3096 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3098 RETURN(PTR_ERR(obj));
3100 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3101 child = mdt_object_child(obj);
3103 /* get the length of lsm */
3104 rc = mo_xattr_get(info->mti_env, child, &LU_BUF_NULL,
3107 if (rc > info->mti_mdt->mdt_max_mdsize)
3108 info->mti_mdt->mdt_max_mdsize = rc;
3111 mdt_object_put(info->mti_env, obj);
3113 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3114 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3115 ldlm_lvbo_size(*lockp));
3116 rc = req_capsule_server_pack(info->mti_pill);
3120 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3121 LASSERT(layout != NULL);
3122 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3123 /* return to normal ldlm handling */
3126 CERROR("%s: Unsupported layout intent (%d)\n",
3127 mdt_obd_name(info->mti_mdt), layout->li_opc);
3131 static int mdt_intent_reint(enum mdt_it_code opcode,
3132 struct mdt_thread_info *info,
3133 struct ldlm_lock **lockp,
3136 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3137 struct ldlm_reply *rep = NULL;
3141 static const struct req_format *intent_fmts[REINT_MAX] = {
3142 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3143 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3148 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3152 if (mdt_it_flavor[opcode].it_reint != opc) {
3153 CERROR("Reint code %ld doesn't match intent: %d\n",
3155 RETURN(err_serious(-EPROTO));
3158 /* Get lock from request for possible resent case. */
3159 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3161 rc = mdt_reint_internal(info, lhc, opc);
3163 /* Check whether the reply has been packed successfully. */
3164 if (mdt_info_req(info)->rq_repmsg != NULL)
3165 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3167 RETURN(err_serious(-EFAULT));
3169 /* MDC expects this in any case */
3171 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3173 /* the open lock or the lock for cross-ref object should be
3174 * returned to the client */
3175 if (rc == -EREMOTE || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3176 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3177 rep->lock_policy_res2 = 0;
3178 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3182 rep->lock_policy_res2 = clear_serious(rc);
3184 if (rep->lock_policy_res2 == -ENOENT &&
3185 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3186 rep->lock_policy_res2 = 0;
3188 if (rc == -ENOTCONN || rc == -ENODEV ||
3189 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3191 * If it is the disconnect error (ENODEV & ENOCONN), the error
3192 * will be returned by rq_status, and client at ptlrpc layer
3193 * will detect this, then disconnect, reconnect the import
3194 * immediately, instead of impacting the following the rpc.
3196 lhc->mlh_reg_lh.cookie = 0ull;
3200 * For other cases, the error will be returned by intent.
3201 * and client will retrieve the result from intent.
3204 * FIXME: when open lock is finished, that should be
3207 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3208 LASSERTF(rc == 0, "Error occurred but lock handle "
3209 "is still in use, rc = %d\n", rc);
3210 rep->lock_policy_res2 = 0;
3211 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3214 lhc->mlh_reg_lh.cookie = 0ull;
3215 RETURN(ELDLM_LOCK_ABORTED);
3220 static int mdt_intent_code(long itcode)
3228 case IT_OPEN|IT_CREAT:
3235 rc = MDT_IT_READDIR;
3238 rc = MDT_IT_GETATTR;
3250 rc = MDT_IT_GETXATTR;
3255 case IT_QUOTA_DQACQ:
3260 CERROR("Unknown intent opcode: %ld\n", itcode);
3267 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3268 struct ldlm_lock **lockp, __u64 flags)
3270 struct req_capsule *pill;
3271 struct mdt_it_flavor *flv;
3276 opc = mdt_intent_code(itopc);
3280 pill = info->mti_pill;
3282 if (opc == MDT_IT_QUOTA) {
3283 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3286 RETURN(-EOPNOTSUPP);
3288 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3289 /* pass the request to quota master */
3290 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3291 mdt_info_req(info), lockp,
3296 flv = &mdt_it_flavor[opc];
3297 if (flv->it_fmt != NULL)
3298 req_capsule_extend(pill, flv->it_fmt);
3300 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3302 struct ptlrpc_request *req = mdt_info_req(info);
3303 if (flv->it_flags & MUTABOR &&
3304 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3307 if (rc == 0 && flv->it_act != NULL) {
3308 struct ldlm_reply *rep;
3310 /* execute policy */
3311 rc = flv->it_act(opc, info, lockp, flags);
3313 /* Check whether the reply has been packed successfully. */
3314 if (mdt_info_req(info)->rq_repmsg != NULL) {
3315 rep = req_capsule_server_get(info->mti_pill,
3317 rep->lock_policy_res2 =
3318 ptlrpc_status_hton(rep->lock_policy_res2);
3326 static int mdt_intent_policy(struct ldlm_namespace *ns,
3327 struct ldlm_lock **lockp, void *req_cookie,
3328 ldlm_mode_t mode, __u64 flags, void *data)
3330 struct tgt_session_info *tsi;
3331 struct mdt_thread_info *info;
3332 struct ptlrpc_request *req = req_cookie;
3333 struct ldlm_intent *it;
3334 struct req_capsule *pill;
3339 LASSERT(req != NULL);
3341 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3343 info = tsi2mdt_info(tsi);
3344 LASSERT(info != NULL);
3345 pill = info->mti_pill;
3346 LASSERT(pill->rc_req == req);
3348 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3349 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3350 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3352 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3356 /* Lock without inodebits makes no sense and will oops
3357 * later in ldlm. Let's check it now to see if we have
3358 * ibits corrupted somewhere in mdt_intent_opc().
3359 * The case for client miss to set ibits has been
3360 * processed by others. */
3361 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3362 lr_type == LDLM_IBITS,
3363 info->mti_dlm_req->lock_desc.\
3364 l_policy_data.l_inodebits.bits != 0));
3366 rc = err_serious(-EFAULT);
3368 /* No intent was provided */
3369 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3370 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3371 rc = req_capsule_server_pack(pill);
3373 rc = err_serious(rc);
3375 mdt_thread_info_fini(info);
3379 static int mdt_seq_fini(const struct lu_env *env,
3380 struct mdt_device *m)
3382 return seq_site_fini(env, mdt_seq_site(m));
3385 static int mdt_seq_init(const struct lu_env *env,
3387 struct mdt_device *m)
3389 struct seq_server_site *ss;
3394 ss = mdt_seq_site(m);
3397 * This is sequence-controller node. Init seq-controller server on local
3400 if (ss->ss_node_id == 0) {
3401 LASSERT(ss->ss_control_seq == NULL);
3403 OBD_ALLOC_PTR(ss->ss_control_seq);
3404 if (ss->ss_control_seq == NULL)
3407 rc = seq_server_init(ss->ss_control_seq,
3408 m->mdt_bottom, uuid,
3409 LUSTRE_SEQ_CONTROLLER,
3414 GOTO(out_seq_fini, rc);
3416 OBD_ALLOC_PTR(ss->ss_client_seq);
3417 if (ss->ss_client_seq == NULL)
3418 GOTO(out_seq_fini, rc = -ENOMEM);
3420 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3421 if (prefix == NULL) {
3422 OBD_FREE_PTR(ss->ss_client_seq);
3423 GOTO(out_seq_fini, rc = -ENOMEM);
3426 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3430 * Init seq-controller client after seq-controller server is
3431 * ready. Pass ss->ss_control_seq to it for direct talking.
3433 rc = seq_client_init(ss->ss_client_seq, NULL,
3434 LUSTRE_SEQ_METADATA, prefix,
3435 ss->ss_control_seq);
3436 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3439 GOTO(out_seq_fini, rc);
3442 /* Init seq-server on local MDT */
3443 LASSERT(ss->ss_server_seq == NULL);
3445 OBD_ALLOC_PTR(ss->ss_server_seq);
3446 if (ss->ss_server_seq == NULL)
3447 GOTO(out_seq_fini, rc = -ENOMEM);
3449 rc = seq_server_init(ss->ss_server_seq,
3450 m->mdt_bottom, uuid,
3455 GOTO(out_seq_fini, rc = -ENOMEM);
3457 /* Assign seq-controller client to local seq-server. */
3458 if (ss->ss_node_id == 0) {
3459 LASSERT(ss->ss_client_seq != NULL);
3461 rc = seq_server_set_cli(ss->ss_server_seq,
3469 mdt_seq_fini(env, m);
3477 static int mdt_fld_fini(const struct lu_env *env,
3478 struct mdt_device *m)
3480 struct seq_server_site *ss = mdt_seq_site(m);
3483 if (ss && ss->ss_server_fld) {
3484 fld_server_fini(env, ss->ss_server_fld);
3485 OBD_FREE_PTR(ss->ss_server_fld);
3486 ss->ss_server_fld = NULL;
3492 static int mdt_fld_init(const struct lu_env *env,
3494 struct mdt_device *m)
3496 struct seq_server_site *ss;
3500 ss = mdt_seq_site(m);
3502 OBD_ALLOC_PTR(ss->ss_server_fld);
3503 if (ss->ss_server_fld == NULL)
3504 RETURN(rc = -ENOMEM);
3506 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3507 ss->ss_node_id, LU_SEQ_RANGE_MDT);
3509 OBD_FREE_PTR(ss->ss_server_fld);
3510 ss->ss_server_fld = NULL;
3517 static void mdt_stack_pre_fini(const struct lu_env *env,
3518 struct mdt_device *m, struct lu_device *top)
3520 struct obd_device *obd;
3521 struct lustre_cfg_bufs *bufs;
3522 struct lustre_cfg *lcfg;
3523 struct mdt_thread_info *info;
3528 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3529 LASSERT(info != NULL);
3531 bufs = &info->mti_u.bufs;
3533 LASSERT(m->mdt_child_exp);
3534 LASSERT(m->mdt_child_exp->exp_obd);
3535 obd = m->mdt_child_exp->exp_obd;
3537 /* process cleanup, pass mdt obd name to get obd umount flags */
3538 /* XXX: this is needed because all layers are referenced by
3539 * objects (some of them are pinned by osd, for example *
3540 * the proper solution should be a model where object used
3541 * by osd only doesn't have mdt/mdd slices -bzzz */
3542 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3543 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3544 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3546 CERROR("%s:Cannot alloc lcfg!\n", mdt_obd_name(m));
3549 top->ld_ops->ldo_process_config(env, top, lcfg);
3550 lustre_cfg_free(lcfg);
3554 static void mdt_stack_fini(const struct lu_env *env,
3555 struct mdt_device *m, struct lu_device *top)
3557 struct obd_device *obd = mdt2obd_dev(m);
3558 struct lustre_cfg_bufs *bufs;
3559 struct lustre_cfg *lcfg;
3560 struct mdt_thread_info *info;
3564 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3565 LASSERT(info != NULL);
3567 lu_dev_del_linkage(top->ld_site, top);
3569 lu_site_purge(env, top->ld_site, -1);
3571 bufs = &info->mti_u.bufs;
3572 /* process cleanup, pass mdt obd name to get obd umount flags */
3573 /* another purpose is to let all layers to release their objects */
3574 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3579 lustre_cfg_bufs_set_string(bufs, 1, flags);
3580 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3582 CERROR("Cannot alloc lcfg!\n");
3586 top->ld_ops->ldo_process_config(env, top, lcfg);
3587 lustre_cfg_free(lcfg);
3589 lu_site_purge(env, top->ld_site, -1);
3591 m->mdt_child = NULL;
3592 m->mdt_bottom = NULL;
3594 obd_disconnect(m->mdt_child_exp);
3595 m->mdt_child_exp = NULL;
3597 obd_disconnect(m->mdt_bottom_exp);
3598 m->mdt_child_exp = NULL;
3601 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3602 const char *next, struct obd_export **exp)
3604 struct obd_connect_data *data = NULL;
3605 struct obd_device *obd;
3609 OBD_ALLOC_PTR(data);
3611 GOTO(out, rc = -ENOMEM);
3613 obd = class_name2obd(next);
3615 CERROR("%s: can't locate next device: %s\n",
3616 mdt_obd_name(m), next);
3617 GOTO(out, rc = -ENOTCONN);
3620 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3621 data->ocd_version = LUSTRE_VERSION_CODE;
3623 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3625 CERROR("%s: cannot connect to next dev %s (%d)\n",
3626 mdt_obd_name(m), next, rc);
3636 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3637 struct lustre_cfg *cfg)
3639 char *dev = lustre_cfg_string(cfg, 0);
3640 int rc, name_size, uuid_size;
3641 char *name, *uuid, *p;
3642 struct lustre_cfg_bufs *bufs;
3643 struct lustre_cfg *lcfg;
3644 struct obd_device *obd;
3645 struct lustre_profile *lprof;
3646 struct lu_site *site;
3649 /* in 1.8 we had the only device in the stack - MDS.
3650 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3651 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3652 * to generate names and setup MDT, MDD. MDT will be using
3653 * generated name to connect to MDD. for MDD the next device
3654 * will be LOD with name taken from so called "profile" which
3655 * is generated by mount_option line
3657 * 1.8 MGS generates config. commands like this:
3658 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3659 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3660 * 2.0 MGS generates config. commands like this:
3661 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3662 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3663 * 3:lustre-MDT0000-mdtlov 4:f
3665 * we generate MDD name from MDT one, just replacing T with D
3667 * after all the preparations, the logical equivalent will be
3668 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3669 * 3:lustre-MDT0000-mdtlov 4:f
3670 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3671 * 3:lustre-MDD0000 4:f
3673 * notice we build the stack from down to top: MDD first, then MDT */
3675 name_size = MAX_OBD_NAME;
3676 uuid_size = MAX_OBD_NAME;
3678 OBD_ALLOC(name, name_size);
3679 OBD_ALLOC(uuid, uuid_size);
3680 if (name == NULL || uuid == NULL)
3681 GOTO(cleanup_mem, rc = -ENOMEM);
3683 OBD_ALLOC_PTR(bufs);
3685 GOTO(cleanup_mem, rc = -ENOMEM);
3688 p = strstr(name, "-MDT");
3690 GOTO(cleanup_mem, rc = -ENOMEM);
3693 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
3695 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3696 if (lprof == NULL || lprof->lp_dt == NULL) {
3697 CERROR("can't find the profile: %s\n",
3698 lustre_cfg_string(cfg, 0));
3699 GOTO(cleanup_mem, rc = -EINVAL);
3702 lustre_cfg_bufs_reset(bufs, name);
3703 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
3704 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3705 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3707 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3709 GOTO(free_bufs, rc = -ENOMEM);
3711 rc = class_attach(lcfg);
3713 GOTO(lcfg_cleanup, rc);
3715 obd = class_name2obd(name);
3717 CERROR("Can not find obd %s (%s in config)\n",
3718 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
3719 GOTO(class_detach, rc = -EINVAL);
3722 lustre_cfg_free(lcfg);
3724 lustre_cfg_bufs_reset(bufs, name);
3725 lustre_cfg_bufs_set_string(bufs, 1, uuid);
3726 lustre_cfg_bufs_set_string(bufs, 2, dev);
3727 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3729 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
3731 rc = class_setup(obd, lcfg);
3733 GOTO(class_detach, rc);
3735 /* connect to MDD we just setup */
3736 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
3740 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
3742 LASSERT(mdt_lu_site(mdt) == NULL);
3743 mdt->mdt_lu_dev.ld_site = site;
3744 site->ls_top_dev = &mdt->mdt_lu_dev;
3745 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
3748 /* now connect to bottom OSD */
3749 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
3750 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
3754 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
3757 rc = lu_env_refill((struct lu_env *)env);
3759 CERROR("Failure to refill session: '%d'\n", rc);
3761 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
3766 class_detach(obd, lcfg);
3768 lustre_cfg_free(lcfg);
3773 OBD_FREE(name, name_size);
3775 OBD_FREE(uuid, uuid_size);
3779 /* setup quota master target on MDT0 */
3780 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
3781 struct lustre_cfg *cfg)
3783 struct obd_device *obd;
3784 char *dev = lustre_cfg_string(cfg, 0);
3785 char *qmtname, *uuid, *p;
3786 struct lustre_cfg_bufs *bufs;
3787 struct lustre_cfg *lcfg;
3788 struct lustre_profile *lprof;
3789 struct obd_connect_data *data;
3793 LASSERT(mdt->mdt_qmt_exp == NULL);
3794 LASSERT(mdt->mdt_qmt_dev == NULL);
3796 /* quota master is on MDT0 only for now */
3797 if (mdt->mdt_seq_site.ss_node_id != 0)
3800 /* MGS generates config commands which look as follows:
3801 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3802 * 3:lustre-MDT0000-mdtlov 4:f
3804 * We generate the QMT name from the MDT one, just replacing MD with QM
3805 * after all the preparations, the logical equivalent will be:
3806 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
3807 * 3:lustre-MDT0000-osd 4:f */
3808 OBD_ALLOC(qmtname, MAX_OBD_NAME);
3809 OBD_ALLOC(uuid, UUID_MAX);
3810 OBD_ALLOC_PTR(bufs);
3811 OBD_ALLOC_PTR(data);
3812 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
3813 GOTO(cleanup_mem, rc = -ENOMEM);
3815 strcpy(qmtname, dev);
3816 p = strstr(qmtname, "-MDT");
3818 GOTO(cleanup_mem, rc = -ENOMEM);
3819 /* replace MD with QM */
3823 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
3825 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3826 if (lprof == NULL || lprof->lp_dt == NULL) {
3827 CERROR("can't find profile for %s\n",
3828 lustre_cfg_string(cfg, 0));
3829 GOTO(cleanup_mem, rc = -EINVAL);
3832 lustre_cfg_bufs_reset(bufs, qmtname);
3833 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
3834 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3835 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3837 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3839 GOTO(cleanup_mem, rc = -ENOMEM);
3841 rc = class_attach(lcfg);
3843 GOTO(lcfg_cleanup, rc);
3845 obd = class_name2obd(qmtname);
3847 CERROR("Can not find obd %s (%s in config)\n", qmtname,
3848 lustre_cfg_string(cfg, 0));
3849 GOTO(class_detach, rc = -EINVAL);
3852 lustre_cfg_free(lcfg);
3854 lustre_cfg_bufs_reset(bufs, qmtname);
3855 lustre_cfg_bufs_set_string(bufs, 1, uuid);
3856 lustre_cfg_bufs_set_string(bufs, 2, dev);
3858 /* for quota, the next device should be the OSD device */
3859 lustre_cfg_bufs_set_string(bufs, 3,
3860 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
3862 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
3864 rc = class_setup(obd, lcfg);
3866 GOTO(class_detach, rc);
3868 mdt->mdt_qmt_dev = obd->obd_lu_dev;
3870 /* configure local quota objects */
3871 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
3875 GOTO(class_cleanup, rc);
3877 /* connect to quota master target */
3878 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3879 data->ocd_version = LUSTRE_VERSION_CODE;
3880 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
3883 CERROR("cannot connect to quota master device %s (%d)\n",
3885 GOTO(class_cleanup, rc);
3891 class_manual_cleanup(obd);
3892 mdt->mdt_qmt_dev = NULL;
3896 class_detach(obd, lcfg);
3898 lustre_cfg_free(lcfg);
3903 OBD_FREE(qmtname, MAX_OBD_NAME);
3905 OBD_FREE(uuid, UUID_MAX);
3911 /* Shutdown quota master target associated with mdt */
3912 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
3916 if (mdt->mdt_qmt_exp == NULL)
3918 LASSERT(mdt->mdt_qmt_dev != NULL);
3920 /* the qmt automatically shuts down when the mdt disconnects */
3921 obd_disconnect(mdt->mdt_qmt_exp);
3922 mdt->mdt_qmt_exp = NULL;
3923 mdt->mdt_qmt_dev = NULL;
3927 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
3928 * for now. This will be removed along with converting rest of MDT code
3929 * to use tgt_session_info */
3930 int mdt_tgt_getxattr(struct tgt_session_info *tsi)
3932 struct mdt_thread_info *info = tsi2mdt_info(tsi);
3935 rc = mdt_getxattr(info);
3937 mdt_thread_info_fini(info);
3941 static struct tgt_handler mdt_tgt_handlers[] = {
3942 TGT_RPC_HANDLER(MDS_FIRST_OPC,
3943 0, MDS_CONNECT, mdt_tgt_connect,
3944 &RQF_CONNECT, LUSTRE_OBD_VERSION),
3945 TGT_RPC_HANDLER(MDS_FIRST_OPC,
3946 0, MDS_DISCONNECT, tgt_disconnect,
3947 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
3948 TGT_RPC_HANDLER(MDS_FIRST_OPC,
3949 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
3950 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
3951 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
3952 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
3953 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
3954 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
3956 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
3957 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
3958 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
3959 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
3960 TGT_MDT_HDL(HABEO_CORPUS, MDS_DONE_WRITING,
3962 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
3963 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
3964 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_IS_SUBDIR, mdt_is_subdir),
3965 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
3966 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
3968 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
3969 mdt_hsm_ct_register),
3970 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
3971 mdt_hsm_ct_unregister),
3972 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
3974 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
3976 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
3977 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
3979 TGT_MDT_HDL(HABEO_CORPUS|HABEO_REFERO | MUTABOR, MDS_SWAP_LAYOUTS,
3983 static struct tgt_handler mdt_sec_ctx_ops[] = {
3984 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
3985 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
3986 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
3989 static struct tgt_handler mdt_quota_ops[] = {
3990 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
3993 static struct tgt_opc_slice mdt_common_slice[] = {
3995 .tos_opc_start = MDS_FIRST_OPC,
3996 .tos_opc_end = MDS_LAST_OPC,
3997 .tos_hs = mdt_tgt_handlers
4000 .tos_opc_start = OBD_FIRST_OPC,
4001 .tos_opc_end = OBD_LAST_OPC,
4002 .tos_hs = tgt_obd_handlers
4005 .tos_opc_start = LDLM_FIRST_OPC,
4006 .tos_opc_end = LDLM_LAST_OPC,
4007 .tos_hs = tgt_dlm_handlers
4010 .tos_opc_start = SEC_FIRST_OPC,
4011 .tos_opc_end = SEC_LAST_OPC,
4012 .tos_hs = mdt_sec_ctx_ops
4015 .tos_opc_start = UPDATE_OBJ,
4016 .tos_opc_end = UPDATE_LAST_OPC,
4017 .tos_hs = tgt_out_handlers
4020 .tos_opc_start = FLD_FIRST_OPC,
4021 .tos_opc_end = FLD_LAST_OPC,
4022 .tos_hs = fld_handlers
4025 .tos_opc_start = SEQ_FIRST_OPC,
4026 .tos_opc_end = SEQ_LAST_OPC,
4027 .tos_hs = seq_handlers
4030 .tos_opc_start = QUOTA_DQACQ,
4031 .tos_opc_end = QUOTA_LAST_OPC,
4032 .tos_hs = mdt_quota_ops
4035 .tos_opc_start = LLOG_FIRST_OPC,
4036 .tos_opc_end = LLOG_LAST_OPC,
4037 .tos_hs = tgt_llog_handlers
4045 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4047 struct md_device *next = m->mdt_child;
4048 struct lu_device *d = &m->mdt_lu_dev;
4049 struct obd_device *obd = mdt2obd_dev(m);
4052 target_recovery_fini(obd);
4054 ping_evictor_stop();
4056 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4058 if (m->mdt_opts.mo_coordinator)
4059 mdt_hsm_cdt_stop(m);
4061 mdt_hsm_cdt_fini(m);
4063 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4064 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4065 obd_exports_barrier(obd);
4066 obd_zombie_barrier();
4070 tgt_fini(env, &m->mdt_lut);
4071 mdt_fs_cleanup(env, m);
4072 upcall_cache_cleanup(m->mdt_identity_cache);
4073 m->mdt_identity_cache = NULL;
4075 if (m->mdt_namespace != NULL) {
4076 ldlm_namespace_free(m->mdt_namespace, NULL,
4077 d->ld_obd->obd_force);
4078 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4081 mdt_quota_fini(env, m);
4083 cfs_free_nidlist(&m->mdt_nosquash_nids);
4084 if (m->mdt_nosquash_str) {
4085 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4086 m->mdt_nosquash_str = NULL;
4087 m->mdt_nosquash_strlen = 0;
4090 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_PAUSE_LFSCK, 0, NULL);
4092 mdt_seq_fini(env, m);
4093 mdt_fld_fini(env, m);
4095 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4096 cfs_timer_disarm(&m->mdt_ck_timer);
4097 mdt_ck_thread_stop(m);
4102 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4104 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4106 server_put_mount(mdt_obd_name(m), NULL);
4111 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4113 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4114 struct sptlrpc_rule_set tmp_rset;
4117 sptlrpc_rule_set_init(&tmp_rset);
4118 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4120 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4121 mdt_obd_name(m), rc);
4125 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4127 write_lock(&m->mdt_lut.lut_sptlrpc_lock);
4128 sptlrpc_rule_set_free(&m->mdt_lut.lut_sptlrpc_rset);
4129 m->mdt_lut.lut_sptlrpc_rset = tmp_rset;
4130 write_unlock(&m->mdt_lut.lut_sptlrpc_lock);
4135 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4137 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4138 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4140 struct mdt_thread_info *info;
4141 struct obd_device *obd;
4142 const char *dev = lustre_cfg_string(cfg, 0);
4143 const char *num = lustre_cfg_string(cfg, 2);
4144 struct lustre_mount_info *lmi = NULL;
4145 struct lustre_sb_info *lsi;
4147 struct seq_server_site *ss_site;
4148 const char *identity_upcall = "NONE";
4149 struct md_device *next;
4155 lu_device_init(&m->mdt_lu_dev, ldt);
4157 * Environment (env) might be missing mdt_thread_key values at that
4158 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4161 * Usually device allocation path doesn't use module key values, but
4162 * mdt has to do a lot of work here, so allocate key value.
4164 rc = lu_env_refill((struct lu_env *)env);
4168 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4169 LASSERT(info != NULL);
4171 obd = class_name2obd(dev);
4172 LASSERT(obd != NULL);
4174 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4176 m->mdt_som_conf = 0;
4178 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4180 /* default is coordinator off, it is started through conf_param
4182 m->mdt_opts.mo_coordinator = 0;
4184 lmi = server_get_mount(dev);
4186 CERROR("Cannot get mount info for %s!\n", dev);
4189 lsi = s2lsi(lmi->lmi_sb);
4190 /* CMD is supported only in IAM mode */
4192 node_id = simple_strtol(num, NULL, 10);
4193 obd->u.obt.obt_magic = OBT_MAGIC;
4196 spin_lock_init(&m->mdt_ioepoch_lock);
4197 m->mdt_capa_timeout = CAPA_TIMEOUT;
4198 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4199 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4200 m->mdt_squash_uid = 0;
4201 m->mdt_squash_gid = 0;
4202 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4203 m->mdt_nosquash_str = NULL;
4204 m->mdt_nosquash_strlen = 0;
4205 init_rwsem(&m->mdt_squash_sem);
4206 spin_lock_init(&m->mdt_osfs_lock);
4207 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4208 m->mdt_enable_remote_dir = 0;
4209 m->mdt_enable_remote_dir_gid = 0;
4211 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4212 m->mdt_lu_dev.ld_obd = obd;
4213 /* Set this lu_device to obd for error handling purposes. */
4214 obd->obd_lu_dev = &m->mdt_lu_dev;
4216 /* init the stack */
4217 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4219 CERROR("%s: Can't init device stack, rc %d\n",
4220 mdt_obd_name(m), rc);
4225 ss_site = mdt_seq_site(m);
4226 s->ld_seq_site = ss_site;
4229 /* set server index */
4230 ss_site->ss_node_id = node_id;
4232 /* failover is the default
4233 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4234 * assumed whose ss_node_id == 0 XXX
4236 obd->obd_replayable = 1;
4237 /* No connection accepted until configurations will finish */
4238 obd->obd_no_conn = 1;
4240 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4241 char *str = lustre_cfg_string(cfg, 4);
4242 if (strchr(str, 'n')) {
4243 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4244 obd->obd_replayable = 0;
4248 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4250 GOTO(err_fini_stack, rc);
4252 rc = mdt_seq_init(env, mdt_obd_name(m), m);
4254 GOTO(err_fini_fld, rc);
4256 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4257 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4258 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4259 LDLM_NAMESPACE_SERVER,
4260 LDLM_NAMESPACE_GREEDY,
4262 if (m->mdt_namespace == NULL)
4263 GOTO(err_fini_seq, rc = -ENOMEM);
4265 m->mdt_namespace->ns_lvbp = m;
4266 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4268 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4269 /* set obd_namespace for compatibility with old code */
4270 obd->obd_namespace = m->mdt_namespace;
4272 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4274 rc = mdt_hsm_cdt_init(m);
4276 CERROR("%s: error initializing coordinator, rc %d\n",
4277 mdt_obd_name(m), rc);
4278 GOTO(err_free_ns, rc);
4281 rc = mdt_ck_thread_start(m);
4283 GOTO(err_free_hsm, rc);
4285 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4286 OBD_FAIL_MDS_ALL_REQUEST_NET,
4287 OBD_FAIL_MDS_ALL_REPLY_NET);
4291 rc = mdt_fs_setup(env, m, obd, lsi);
4295 mdt_adapt_sptlrpc_conf(obd, 1);
4297 next = m->mdt_child;
4298 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4301 GOTO(err_fs_cleanup, rc);
4303 if (mntopts & MNTOPT_USERXATTR)
4304 m->mdt_opts.mo_user_xattr = 1;
4306 m->mdt_opts.mo_user_xattr = 0;
4308 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4310 GOTO(err_fs_cleanup, rc);
4312 if (mntopts & MNTOPT_ACL)
4313 m->mdt_opts.mo_acl = 1;
4315 m->mdt_opts.mo_acl = 0;
4317 /* XXX: to support suppgid for ACL, we enable identity_upcall
4318 * by default, otherwise, maybe got unexpected -EACCESS. */
4319 if (m->mdt_opts.mo_acl)
4320 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4322 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4324 &mdt_identity_upcall_cache_ops);
4325 if (IS_ERR(m->mdt_identity_cache)) {
4326 rc = PTR_ERR(m->mdt_identity_cache);
4327 m->mdt_identity_cache = NULL;
4328 GOTO(err_fs_cleanup, rc);
4331 rc = mdt_procfs_init(m, dev);
4333 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4334 GOTO(err_recovery, rc);
4337 rc = mdt_quota_init(env, m, cfg);
4339 GOTO(err_procfs, rc);
4341 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4342 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4343 "mdt_ldlm_client", m->mdt_ldlm_client);
4345 ping_evictor_start();
4347 /* recovery will be started upon mdt_prepare()
4348 * when the whole stack is complete and ready
4349 * to serve the requests */
4351 mdt_init_capa_ctxt(env, m);
4353 /* Reduce the initial timeout on an MDS because it doesn't need such
4354 * a long timeout as an OST does. Adaptive timeouts will adjust this
4355 * value appropriately. */
4356 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4357 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4363 target_recovery_fini(obd);
4364 upcall_cache_cleanup(m->mdt_identity_cache);
4365 m->mdt_identity_cache = NULL;
4367 mdt_fs_cleanup(env, m);
4369 tgt_fini(env, &m->mdt_lut);
4371 cfs_timer_disarm(&m->mdt_ck_timer);
4372 mdt_ck_thread_stop(m);
4374 mdt_hsm_cdt_fini(m);
4376 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4377 obd->obd_namespace = m->mdt_namespace = NULL;
4379 mdt_seq_fini(env, m);
4381 mdt_fld_fini(env, m);
4383 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4386 server_put_mount(dev, lmi->lmi_mnt);
4390 /* For interoperability, the left element is old parameter, the right one
4391 * is the new version of the parameter, if some parameter is deprecated,
4392 * the new version should be set as NULL. */
4393 static struct cfg_interop_param mdt_interop_param[] = {
4394 { "mdt.group_upcall", NULL },
4395 { "mdt.quota_type", NULL },
4396 { "mdd.quota_type", NULL },
4397 { "mdt.rootsquash", "mdt.root_squash" },
4398 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4402 /* used by MGS to process specific configurations */
4403 static int mdt_process_config(const struct lu_env *env,
4404 struct lu_device *d, struct lustre_cfg *cfg)
4406 struct mdt_device *m = mdt_dev(d);
4407 struct md_device *md_next = m->mdt_child;
4408 struct lu_device *next = md2lu_dev(md_next);
4412 switch (cfg->lcfg_command) {
4414 struct lprocfs_static_vars lvars;
4415 struct obd_device *obd = d->ld_obd;
4417 /* For interoperability */
4418 struct cfg_interop_param *ptr = NULL;
4419 struct lustre_cfg *old_cfg = NULL;
4422 param = lustre_cfg_string(cfg, 1);
4423 if (param == NULL) {
4424 CERROR("param is empty\n");
4429 ptr = class_find_old_param(param, mdt_interop_param);
4431 if (ptr->new_param == NULL) {
4433 CWARN("For interoperability, skip this %s."
4434 " It is obsolete.\n", ptr->old_param);
4438 CWARN("Found old param %s, changed it to %s.\n",
4439 ptr->old_param, ptr->new_param);
4442 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4449 lprocfs_mdt_init_vars(&lvars);
4450 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4452 if (rc > 0 || rc == -ENOSYS) {
4453 /* is it an HSM var ? */
4454 rc = class_process_proc_param(PARAM_HSM,
4455 hsm_cdt_get_proc_vars(),
4457 if (rc > 0 || rc == -ENOSYS)
4458 /* we don't understand; pass it on */
4459 rc = next->ld_ops->ldo_process_config(env, next,
4463 if (old_cfg != NULL)
4464 lustre_cfg_free(cfg);
4469 /* others are passed further */
4470 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4476 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4477 const struct lu_object_header *hdr,
4478 struct lu_device *d)
4480 struct mdt_object *mo;
4484 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, __GFP_IO);
4486 struct lu_object *o;
4487 struct lu_object_header *h;
4490 h = &mo->mot_header;
4491 lu_object_header_init(h);
4492 lu_object_init(o, h, d);
4493 lu_object_add_top(h, o);
4494 o->lo_ops = &mdt_obj_ops;
4495 mutex_init(&mo->mot_ioepoch_mutex);
4496 mutex_init(&mo->mot_lov_mutex);
4497 init_rwsem(&mo->mot_open_sem);
4503 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4504 const struct lu_object_conf *unused)
4506 struct mdt_device *d = mdt_dev(o->lo_dev);
4507 struct lu_device *under;
4508 struct lu_object *below;
4512 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4513 PFID(lu_object_fid(o)));
4515 under = &d->mdt_child->md_lu_dev;
4516 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4517 if (below != NULL) {
4518 lu_object_add(o, below);
4525 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4527 struct mdt_object *mo = mdt_obj(o);
4528 struct lu_object_header *h;
4532 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4533 PFID(lu_object_fid(o)));
4535 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4536 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4539 lu_object_header_fini(h);
4540 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4545 static int mdt_object_print(const struct lu_env *env, void *cookie,
4546 lu_printer_t p, const struct lu_object *o)
4548 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4549 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4550 "flags="LPX64", epochcount=%d, writecount=%d)",
4551 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4552 mdto->mot_ioepoch_count, mdto->mot_writecount);
4555 static int mdt_prepare(const struct lu_env *env,
4556 struct lu_device *pdev,
4557 struct lu_device *cdev)
4559 struct mdt_device *mdt = mdt_dev(cdev);
4560 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4561 struct obd_device *obd = cdev->ld_obd;
4562 struct lfsck_start_param lsp;
4569 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4573 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4577 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4581 lsp.lsp_start = NULL;
4582 lsp.lsp_namespace = mdt->mdt_namespace;
4583 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
4584 OBD_IOC_START_LFSCK,
4587 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
4588 mdt_obd_name(mdt), rc);
4592 if (mdt->mdt_seq_site.ss_node_id == 0) {
4593 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4594 &mdt->mdt_md_root_fid);
4599 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4600 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4601 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4602 LASSERT(obd->obd_no_conn);
4603 spin_lock(&obd->obd_dev_lock);
4604 obd->obd_no_conn = 0;
4605 spin_unlock(&obd->obd_dev_lock);
4607 if (obd->obd_recovering == 0)
4608 mdt_postrecov(env, mdt);
4613 const struct lu_device_operations mdt_lu_ops = {
4614 .ldo_object_alloc = mdt_object_alloc,
4615 .ldo_process_config = mdt_process_config,
4616 .ldo_prepare = mdt_prepare,
4619 static const struct lu_object_operations mdt_obj_ops = {
4620 .loo_object_init = mdt_object_init,
4621 .loo_object_free = mdt_object_free,
4622 .loo_object_print = mdt_object_print
4625 static int mdt_obd_set_info_async(const struct lu_env *env,
4626 struct obd_export *exp,
4627 __u32 keylen, void *key,
4628 __u32 vallen, void *val,
4629 struct ptlrpc_request_set *set)
4631 struct obd_device *obd = exp->exp_obd;
4637 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4638 rc = mdt_adapt_sptlrpc_conf(obd, 0);
4646 * Match client and server connection feature flags.
4648 * Compute the compatibility flags for a connection request based on
4649 * features mutually supported by client and server.
4651 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4652 * must not be updated here, otherwise a partially initialized value may
4653 * be exposed. After the connection request is successfully processed,
4654 * the top-level MDT connect request handler atomically updates the export
4655 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4656 * reply. \see mdt_connect().
4658 * \param exp the obd_export associated with this client/target pair
4659 * \param mdt the target device for the connection
4660 * \param data stores data for this connect request
4663 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4664 * \retval -EBADE client and server feature requirements are incompatible
4666 static int mdt_connect_internal(struct obd_export *exp,
4667 struct mdt_device *mdt,
4668 struct obd_connect_data *data)
4670 LASSERT(data != NULL);
4672 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4673 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4675 /* If no known bits (which should not happen, probably,
4676 as everybody should support LOOKUP and UPDATE bits at least)
4677 revert to compat mode with plain locks. */
4678 if (!data->ocd_ibits_known &&
4679 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4680 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4682 if (!mdt->mdt_opts.mo_acl)
4683 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4685 if (!mdt->mdt_opts.mo_user_xattr)
4686 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4688 if (!mdt->mdt_som_conf)
4689 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4691 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4692 data->ocd_brw_size = min(data->ocd_brw_size,
4693 (__u32)MD_MAX_BRW_SIZE);
4694 if (data->ocd_brw_size == 0) {
4695 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4696 " ocd_version: %x ocd_grant: %d "
4697 "ocd_index: %u ocd_brw_size is "
4698 "unexpectedly zero, network data "
4699 "corruption? Refusing connection of this"
4702 exp->exp_client_uuid.uuid,
4703 exp, data->ocd_connect_flags, data->ocd_version,
4704 data->ocd_grant, data->ocd_index);
4709 /* NB: Disregard the rule against updating
4710 * exp_connect_data.ocd_connect_flags in this case, since
4711 * tgt_client_new() needs to know if this is a lightweight
4712 * connection, and it is safe to expose this flag before
4713 * connection processing completes. */
4714 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4715 spin_lock(&exp->exp_lock);
4716 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4717 spin_unlock(&exp->exp_lock);
4720 data->ocd_version = LUSTRE_VERSION_CODE;
4722 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4723 CWARN("%s: MDS requires FID support, but client not\n",
4728 if (mdt->mdt_som_conf &&
4729 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
4730 OBD_CONNECT_MDS_MDS |
4731 OBD_CONNECT_SOM))) {
4732 CWARN("%s: MDS has SOM enabled, but client does not support "
4733 "it\n", mdt_obd_name(mdt));
4737 if (OCD_HAS_FLAG(data, PINGLESS)) {
4738 if (ptlrpc_pinger_suppress_pings()) {
4739 spin_lock(&exp->exp_obd->obd_dev_lock);
4740 list_del_init(&exp->exp_obd_chain_timed);
4741 spin_unlock(&exp->exp_obd->obd_dev_lock);
4743 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
4747 data->ocd_max_easize = mdt->mdt_max_ea_size;
4752 /* mds_connect copy */
4753 static int mdt_obd_connect(const struct lu_env *env,
4754 struct obd_export **exp, struct obd_device *obd,
4755 struct obd_uuid *cluuid,
4756 struct obd_connect_data *data,
4759 struct obd_export *lexp;
4760 struct lustre_handle conn = { 0 };
4761 struct mdt_device *mdt;
4765 LASSERT(env != NULL);
4766 if (!exp || !obd || !cluuid)
4769 mdt = mdt_dev(obd->obd_lu_dev);
4772 * first, check whether the stack is ready to handle requests
4773 * XXX: probably not very appropriate method is used now
4774 * at some point we should find a better one
4776 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
4777 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
4778 rc = obd_health_check(env, mdt->mdt_child_exp->exp_obd);
4781 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
4784 rc = class_connect(&conn, obd, cluuid);
4788 lexp = class_conn2export(&conn);
4789 LASSERT(lexp != NULL);
4791 rc = mdt_connect_internal(lexp, mdt, data);
4793 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
4796 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
4797 rc = tgt_client_new(env, lexp);
4799 mdt_export_stats_init(obd, lexp, localdata);
4803 class_disconnect(lexp);
4812 static int mdt_obd_reconnect(const struct lu_env *env,
4813 struct obd_export *exp, struct obd_device *obd,
4814 struct obd_uuid *cluuid,
4815 struct obd_connect_data *data,
4821 if (exp == NULL || obd == NULL || cluuid == NULL)
4824 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
4826 mdt_export_stats_init(obd, exp, localdata);
4831 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
4832 struct mdt_thread_info *info,
4833 struct mdt_file_data *mfd)
4835 struct lu_context ses;
4839 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
4844 lu_context_enter(&ses);
4846 mdt_ucred(info)->uc_valid = UCRED_OLD;
4847 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
4849 lu_context_exit(&ses);
4850 lu_context_fini(&ses);
4856 static int mdt_export_cleanup(struct obd_export *exp)
4858 struct mdt_export_data *med = &exp->exp_mdt_data;
4859 struct obd_device *obd = exp->exp_obd;
4860 struct mdt_device *mdt;
4861 struct mdt_thread_info *info;
4863 CFS_LIST_HEAD(closing_list);
4864 struct mdt_file_data *mfd, *n;
4868 spin_lock(&med->med_open_lock);
4869 while (!cfs_list_empty(&med->med_open_head)) {
4870 cfs_list_t *tmp = med->med_open_head.next;
4871 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
4873 /* Remove mfd handle so it can't be found again.
4874 * We are consuming the mfd_list reference here. */
4875 class_handle_unhash(&mfd->mfd_handle);
4876 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
4878 spin_unlock(&med->med_open_lock);
4879 mdt = mdt_dev(obd->obd_lu_dev);
4880 LASSERT(mdt != NULL);
4882 rc = lu_env_init(&env, LCT_MD_THREAD);
4886 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
4887 LASSERT(info != NULL);
4888 memset(info, 0, sizeof *info);
4889 info->mti_env = &env;
4890 info->mti_mdt = mdt;
4891 info->mti_exp = exp;
4893 if (!cfs_list_empty(&closing_list)) {
4894 struct md_attr *ma = &info->mti_attr;
4896 /* Close any open files (which may also cause orphan unlinking). */
4897 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
4898 cfs_list_del_init(&mfd->mfd_list);
4899 ma->ma_need = ma->ma_valid = 0;
4901 /* This file is being closed due to an eviction, it
4902 * could have been modified and now dirty regarding to
4903 * HSM archive, check this!
4904 * The logic here is to mark a file dirty if there's a
4905 * chance it was dirtied before the client was evicted,
4906 * so that we don't have to wait for a release attempt
4907 * before finding out the file was actually dirty and
4908 * fail the release. Aggressively marking it dirty here
4909 * will cause the policy engine to attempt to
4910 * re-archive it; when rearchiving, we can compare the
4911 * current version to the HSM data_version and make the
4912 * archive request into a noop if it's not actually
4915 if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
4916 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
4918 /* Don't unlink orphan on failover umount, LU-184 */
4919 if (exp->exp_flags & OBD_OPT_FAILOVER) {
4920 ma->ma_valid = MA_FLAGS;
4921 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
4923 mdt_mfd_close(info, mfd);
4926 info->mti_mdt = NULL;
4927 /* cleanup client slot early */
4928 /* Do not erase record for recoverable client. */
4929 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
4930 tgt_client_del(&env, exp);
4936 static int mdt_obd_disconnect(struct obd_export *exp)
4942 class_export_get(exp);
4944 rc = server_disconnect_export(exp);
4946 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
4948 rc = mdt_export_cleanup(exp);
4949 class_export_put(exp);
4953 /* FIXME: Can we avoid using these two interfaces? */
4954 static int mdt_init_export(struct obd_export *exp)
4956 struct mdt_export_data *med = &exp->exp_mdt_data;
4960 CFS_INIT_LIST_HEAD(&med->med_open_head);
4961 spin_lock_init(&med->med_open_lock);
4962 mutex_init(&med->med_idmap_mutex);
4963 med->med_idmap = NULL;
4964 spin_lock(&exp->exp_lock);
4965 exp->exp_connecting = 1;
4966 spin_unlock(&exp->exp_lock);
4968 /* self-export doesn't need client data and ldlm initialization */
4969 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
4970 &exp->exp_client_uuid)))
4973 rc = tgt_client_alloc(exp);
4977 rc = ldlm_init_export(exp);
4984 tgt_client_free(exp);
4986 CERROR("%s: Failed to initialize export: rc = %d\n",
4987 exp->exp_obd->obd_name, rc);
4991 static int mdt_destroy_export(struct obd_export *exp)
4995 if (exp_connect_rmtclient(exp))
4996 mdt_cleanup_idmap(&exp->exp_mdt_data);
4998 target_destroy_export(exp);
4999 /* destroy can be called from failed obd_setup, so
5000 * checking uuid is safer than obd_self_export */
5001 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5002 &exp->exp_client_uuid)))
5005 ldlm_destroy_export(exp);
5006 tgt_client_free(exp);
5008 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5009 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5014 /** The maximum depth that fid2path() will search.
5015 * This is limited only because we want to store the fids for
5016 * historical path lookup purposes.
5018 #define MAX_PATH_DEPTH 100
5020 /** mdt_path() lookup structure. */
5021 struct path_lookup_info {
5022 __u64 pli_recno; /**< history point */
5023 __u64 pli_currec; /**< current record */
5024 struct lu_fid pli_fid;
5025 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5026 struct mdt_object *pli_mdt_obj;
5027 char *pli_path; /**< full path */
5029 int pli_linkno; /**< which hardlink to follow */
5030 int pli_fidcount; /**< number of \a pli_fids */
5033 static int mdt_links_read(struct mdt_thread_info *info,
5034 struct mdt_object *mdt_obj, struct linkea_data *ldata)
5038 LASSERT(ldata->ld_buf->lb_buf != NULL);
5040 if (!mdt_object_exists(mdt_obj))
5043 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5044 ldata->ld_buf, XATTR_NAME_LINK);
5045 if (rc == -ERANGE) {
5046 /* Buf was too small, figure out what we need. */
5047 lu_buf_free(ldata->ld_buf);
5048 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5049 ldata->ld_buf, XATTR_NAME_LINK);
5052 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5053 if (ldata->ld_buf->lb_buf == NULL)
5055 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5056 ldata->ld_buf, XATTR_NAME_LINK);
5061 return linkea_init(ldata);
5064 static int mdt_path_current(struct mdt_thread_info *info,
5065 struct path_lookup_info *pli)
5067 struct mdt_device *mdt = info->mti_mdt;
5068 struct mdt_object *mdt_obj;
5069 struct link_ea_header *leh;
5070 struct link_ea_entry *lee;
5071 struct lu_name *tmpname = &info->mti_name;
5072 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5073 struct lu_buf *buf = &info->mti_big_buf;
5076 struct linkea_data ldata = { 0 };
5080 /* temp buffer for path element, the buffer will be finally freed
5081 * in mdt_thread_info_fini */
5082 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5083 if (buf->lb_buf == NULL)
5087 ptr = pli->pli_path + pli->pli_pathlen - 1;
5090 pli->pli_fidcount = 0;
5091 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5093 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5094 * so checking root_fid can only happen on MDT0. */
5095 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5096 &pli->pli_fids[pli->pli_fidcount])) {
5097 mdt_obj = mdt_object_find(info->mti_env, mdt,
5098 &pli->pli_fids[pli->pli_fidcount]);
5099 if (IS_ERR(mdt_obj))
5100 GOTO(out, rc = PTR_ERR(mdt_obj));
5101 if (mdt_object_remote(mdt_obj)) {
5102 mdt_object_put(info->mti_env, mdt_obj);
5103 GOTO(remote_out, rc = -EREMOTE);
5105 if (!mdt_object_exists(mdt_obj)) {
5106 mdt_object_put(info->mti_env, mdt_obj);
5107 GOTO(out, rc = -ENOENT);
5110 rc = mdt_links_read(info, mdt_obj, &ldata);
5111 mdt_object_put(info->mti_env, mdt_obj);
5116 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5117 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5118 /* If set, use link #linkno for path lookup, otherwise use
5119 link #0. Only do this for the final path element. */
5120 if (pli->pli_fidcount == 0 &&
5121 pli->pli_linkno < leh->leh_reccount) {
5123 for (count = 0; count < pli->pli_linkno; count++) {
5124 lee = (struct link_ea_entry *)
5125 ((char *)lee + reclen);
5126 linkea_entry_unpack(lee, &reclen, tmpname,
5129 if (pli->pli_linkno < leh->leh_reccount - 1)
5130 /* indicate to user there are more links */
5134 /* Pack the name in the end of the buffer */
5135 ptr -= tmpname->ln_namelen;
5136 if (ptr - 1 <= pli->pli_path)
5137 GOTO(out, rc = -EOVERFLOW);
5138 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5141 /* Store the parent fid for historic lookup */
5142 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5143 GOTO(out, rc = -EOVERFLOW);
5144 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5148 ptr++; /* skip leading / */
5149 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5156 /* Returns the full path to this fid, as of changelog record recno. */
5157 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5158 char *path, int pathlen, __u64 *recno, int *linkno,
5161 struct mdt_device *mdt = info->mti_mdt;
5162 struct path_lookup_info *pli;
5170 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5179 pli->pli_mdt_obj = obj;
5180 pli->pli_recno = *recno;
5181 pli->pli_path = path;
5182 pli->pli_pathlen = pathlen;
5183 pli->pli_linkno = *linkno;
5185 /* Retry multiple times in case file is being moved */
5186 while (tries-- && rc == -EAGAIN)
5187 rc = mdt_path_current(info, pli);
5189 /* return the last resolved fids to the client, so the client will
5190 * build the left path on another MDT for remote object */
5191 *fid = pli->pli_fids[pli->pli_fidcount];
5193 *recno = pli->pli_currec;
5194 /* Return next link index to caller */
5195 *linkno = pli->pli_linkno;
5202 static int mdt_fid2path(struct mdt_thread_info *info,
5203 struct getinfo_fid2path *fp)
5205 struct mdt_device *mdt = info->mti_mdt;
5206 struct mdt_object *obj;
5210 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5211 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5213 if (!fid_is_sane(&fp->gf_fid))
5216 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5217 CWARN("%s: "DFID" is invalid, sequence should be "
5218 ">= "LPX64"\n", mdt_obd_name(mdt),
5219 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5223 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5224 if (obj == NULL || IS_ERR(obj)) {
5225 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5230 if (mdt_object_remote(obj))
5232 else if (!mdt_object_exists(obj))
5238 mdt_object_put(info->mti_env, obj);
5239 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5240 PFID(&fp->gf_fid), rc);
5244 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5245 &fp->gf_linkno, &fp->gf_fid);
5247 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5248 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5250 mdt_object_put(info->mti_env, obj);
5255 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5256 void *val, int vallen)
5258 struct getinfo_fid2path *fpout, *fpin;
5261 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5264 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5265 lustre_swab_fid2path(fpin);
5267 memcpy(fpout, fpin, sizeof(*fpin));
5268 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5271 rc = mdt_fid2path(info, fpout);
5275 int mdt_get_info(struct tgt_session_info *tsi)
5285 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5287 CDEBUG(D_IOCTL, "No GETINFO key");
5288 RETURN(err_serious(-EFAULT));
5290 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5293 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5294 if (vallen == NULL) {
5295 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5296 RETURN(err_serious(-EFAULT));
5299 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5301 rc = req_capsule_server_pack(tsi->tsi_pill);
5303 RETURN(err_serious(rc));
5305 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5306 if (valout == NULL) {
5307 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5308 RETURN(err_serious(-EFAULT));
5311 if (KEY_IS(KEY_FID2PATH)) {
5312 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5314 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5315 mdt_thread_info_fini(info);
5322 /* Pass the ioc down */
5323 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5324 unsigned int cmd, int len, void *data)
5326 struct lu_context ioctl_session;
5327 struct md_device *next = mdt->mdt_child;
5331 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5334 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5335 lu_context_enter(&ioctl_session);
5336 env->le_ses = &ioctl_session;
5338 LASSERT(next->md_ops->mdo_iocontrol);
5339 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5341 lu_context_exit(&ioctl_session);
5342 lu_context_fini(&ioctl_session);
5346 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5348 struct obd_ioctl_data *data = karg;
5351 struct mdt_object *obj;
5352 struct mdt_lock_handle *lh;
5356 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5357 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5360 fid = (struct lu_fid *)data->ioc_inlbuf1;
5362 if (!fid_is_sane(fid))
5365 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5367 lh = &mti->mti_lh[MDT_LH_PARENT];
5368 mdt_lock_reg_init(lh, LCK_CR);
5370 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5372 RETURN(PTR_ERR(obj));
5374 if (mdt_object_remote(obj)) {
5377 * before calling version get the correct MDS should be
5378 * fid, this is error to find remote object here
5380 CERROR("nonlocal object "DFID"\n", PFID(fid));
5381 } else if (!mdt_object_exists(obj)) {
5382 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5385 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5386 *(__u64 *)data->ioc_inlbuf2 = version;
5389 mdt_object_unlock_put(mti, obj, lh, 1);
5393 /* ioctls on obd dev */
5394 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5395 void *karg, void *uarg)
5398 struct obd_device *obd = exp->exp_obd;
5399 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5400 struct dt_device *dt = mdt->mdt_bottom;
5404 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5405 rc = lu_env_init(&env, LCT_MD_THREAD);
5411 rc = mdt_device_sync(&env, mdt);
5413 case OBD_IOC_SET_READONLY:
5414 rc = dt->dd_ops->dt_ro(&env, dt);
5416 case OBD_IOC_ABORT_RECOVERY:
5417 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5418 target_stop_recovery_thread(obd);
5421 case OBD_IOC_CHANGELOG_REG:
5422 case OBD_IOC_CHANGELOG_DEREG:
5423 case OBD_IOC_CHANGELOG_CLEAR:
5424 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5426 case OBD_IOC_START_LFSCK: {
5427 struct md_device *next = mdt->mdt_child;
5428 struct obd_ioctl_data *data = karg;
5429 struct lfsck_start_param lsp;
5431 if (unlikely(data == NULL)) {
5436 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5437 lsp.lsp_namespace = mdt->mdt_namespace;
5438 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5441 case OBD_IOC_STOP_LFSCK: {
5442 struct md_device *next = mdt->mdt_child;
5444 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, NULL);
5447 case OBD_IOC_GET_OBJ_VERSION: {
5448 struct mdt_thread_info *mti;
5449 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5450 memset(mti, 0, sizeof *mti);
5451 mti->mti_env = &env;
5455 rc = mdt_ioc_version_get(mti, karg);
5460 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5461 mdt_obd_name(mdt), cmd, rc);
5468 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5470 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5474 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5478 int mdt_obd_postrecov(struct obd_device *obd)
5483 rc = lu_env_init(&env, LCT_MD_THREAD);
5486 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5491 static struct obd_ops mdt_obd_device_ops = {
5492 .o_owner = THIS_MODULE,
5493 .o_set_info_async = mdt_obd_set_info_async,
5494 .o_connect = mdt_obd_connect,
5495 .o_reconnect = mdt_obd_reconnect,
5496 .o_disconnect = mdt_obd_disconnect,
5497 .o_init_export = mdt_init_export,
5498 .o_destroy_export = mdt_destroy_export,
5499 .o_iocontrol = mdt_iocontrol,
5500 .o_postrecov = mdt_obd_postrecov,
5503 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5504 struct lu_device *d)
5506 struct mdt_device *m = mdt_dev(d);
5513 static struct lu_device *mdt_device_free(const struct lu_env *env,
5514 struct lu_device *d)
5516 struct mdt_device *m = mdt_dev(d);
5519 lu_device_fini(&m->mdt_lu_dev);
5525 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5526 struct lu_device_type *t,
5527 struct lustre_cfg *cfg)
5529 struct lu_device *l;
5530 struct mdt_device *m;
5537 rc = mdt_init0(env, m, t, cfg);
5539 mdt_device_free(env, l);
5544 l = ERR_PTR(-ENOMEM);
5548 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5549 LU_KEY_INIT(mdt, struct mdt_thread_info);
5551 static void mdt_key_fini(const struct lu_context *ctx,
5552 struct lu_context_key *key, void* data)
5554 struct mdt_thread_info *info = data;
5556 if (info->mti_big_lmm) {
5557 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5558 info->mti_big_lmm = NULL;
5559 info->mti_big_lmmsize = 0;
5564 /* context key: mdt_thread_key */
5565 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5567 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5569 return lu_ucred(info->mti_env);
5572 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5574 return lu_ucred_check(info->mti_env);
5578 * Enable/disable COS (Commit On Sharing).
5580 * Set/Clear the COS flag in mdt options.
5582 * \param mdt mdt device
5583 * \param val 0 disables COS, other values enable COS
5585 void mdt_enable_cos(struct mdt_device *mdt, int val)
5590 mdt->mdt_opts.mo_cos = !!val;
5591 rc = lu_env_init(&env, LCT_LOCAL);
5592 if (unlikely(rc != 0)) {
5593 CWARN("lu_env initialization failed with rc = %d,"
5594 "cannot sync\n", rc);
5597 mdt_device_sync(&env, mdt);
5602 * Check COS (Commit On Sharing) status.
5604 * Return COS flag status.
5606 * \param mdt mdt device
5608 int mdt_cos_is_enabled(struct mdt_device *mdt)
5610 return mdt->mdt_opts.mo_cos != 0;
5613 static struct lu_device_type_operations mdt_device_type_ops = {
5614 .ldto_device_alloc = mdt_device_alloc,
5615 .ldto_device_free = mdt_device_free,
5616 .ldto_device_fini = mdt_device_fini
5619 static struct lu_device_type mdt_device_type = {
5620 .ldt_tags = LU_DEVICE_MD,
5621 .ldt_name = LUSTRE_MDT_NAME,
5622 .ldt_ops = &mdt_device_type_ops,
5623 .ldt_ctx_tags = LCT_MD_THREAD
5626 static int __init mdt_mod_init(void)
5628 struct lprocfs_static_vars lvars;
5631 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5632 FID_NOBRACE_LEN + 1);
5633 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5635 rc = lu_kmem_init(mdt_caches);
5639 rc = mds_mod_init();
5643 lprocfs_mdt_init_vars(&lvars);
5644 rc = class_register_type(&mdt_obd_device_ops, NULL,
5645 lvars.module_vars, LUSTRE_MDT_NAME,
5651 lu_kmem_fini(mdt_caches);
5658 static void __exit mdt_mod_exit(void)
5660 class_unregister_type(LUSTRE_MDT_NAME);
5662 lu_kmem_fini(mdt_caches);
5665 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5666 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5667 MODULE_LICENSE("GPL");
5669 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);