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 mdt_thread_info *info)
263 struct mdt_device *mdt = info->mti_mdt;
264 struct mdt_body *repbody;
268 rc = mdt_check_ucred(info);
270 RETURN(err_serious(rc));
272 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
273 RETURN(err_serious(-ENOMEM));
275 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
276 repbody->fid1 = mdt->mdt_md_root_fid;
277 repbody->valid |= OBD_MD_FLID;
279 if (mdt->mdt_opts.mo_mds_capa &&
280 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
281 struct mdt_object *root;
282 struct lustre_capa *capa;
284 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
286 RETURN(PTR_ERR(root));
288 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
290 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
291 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
293 mdt_object_put(info->mti_env, root);
295 repbody->valid |= OBD_MD_FLMDSCAPA;
301 int mdt_statfs(struct mdt_thread_info *info)
303 struct ptlrpc_request *req = mdt_info_req(info);
304 struct md_device *next = info->mti_mdt->mdt_child;
305 struct ptlrpc_service_part *svcpt;
306 struct obd_statfs *osfs;
311 svcpt = info->mti_pill->rc_req->rq_rqbd->rqbd_svcpt;
313 /* This will trigger a watchdog timeout */
314 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
315 (MDT_SERVICE_WATCHDOG_FACTOR *
316 at_get(&svcpt->scp_at_estimate)) + 1);
318 rc = mdt_check_ucred(info);
320 RETURN(err_serious(rc));
322 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
323 RETURN(err_serious(-ENOMEM));
325 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
329 /** statfs information are cached in the mdt_device */
330 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
331 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
332 /** statfs data is too old, get up-to-date one */
333 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
336 spin_lock(&info->mti_mdt->mdt_osfs_lock);
337 info->mti_mdt->mdt_osfs = *osfs;
338 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
339 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
341 /** use cached statfs data */
342 spin_lock(&info->mti_mdt->mdt_osfs_lock);
343 *osfs = info->mti_mdt->mdt_osfs;
344 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
348 mdt_counter_incr(req, LPROC_MDT_STATFS);
354 * Pack SOM attributes into the reply.
355 * Call under a DLM UPDATE lock.
357 static void mdt_pack_size2body(struct mdt_thread_info *info,
358 struct mdt_object *mo)
361 struct md_attr *ma = &info->mti_attr;
363 LASSERT(ma->ma_attr.la_valid & LA_MODE);
364 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
366 /* Check if Size-on-MDS is supported, if this is a regular file,
367 * if SOM is enabled on the object and if SOM cache exists and valid.
368 * Otherwise do not pack Size-on-MDS attributes to the reply. */
369 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
370 !S_ISREG(ma->ma_attr.la_mode) ||
371 !mdt_object_is_som_enabled(mo) ||
372 !(ma->ma_valid & MA_SOM))
375 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
376 b->size = ma->ma_som->msd_size;
377 b->blocks = ma->ma_som->msd_blocks;
380 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
381 const struct lu_attr *attr, const struct lu_fid *fid)
383 struct md_attr *ma = &info->mti_attr;
385 LASSERT(ma->ma_valid & MA_INODE);
387 b->atime = attr->la_atime;
388 b->mtime = attr->la_mtime;
389 b->ctime = attr->la_ctime;
390 b->mode = attr->la_mode;
391 b->size = attr->la_size;
392 b->blocks = attr->la_blocks;
393 b->uid = attr->la_uid;
394 b->gid = attr->la_gid;
395 b->flags = attr->la_flags;
396 b->nlink = attr->la_nlink;
397 b->rdev = attr->la_rdev;
399 /*XXX should pack the reply body according to lu_valid*/
400 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
401 OBD_MD_FLGID | OBD_MD_FLTYPE |
402 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
403 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
405 if (!S_ISREG(attr->la_mode)) {
406 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
407 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
408 /* means no objects are allocated on osts. */
409 LASSERT(!(ma->ma_valid & MA_LOV));
410 /* just ignore blocks occupied by extend attributes on MDS */
412 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
413 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
414 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm &&
415 (ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
416 /* A released file stores its size on MDS. */
418 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
423 b->valid |= OBD_MD_FLID;
424 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
425 PFID(fid), b->nlink, b->mode, b->size);
429 mdt_body_reverse_idmap(info, b);
431 if (b->valid & OBD_MD_FLSIZE)
432 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
433 PFID(fid), (unsigned long long)b->size);
436 static inline int mdt_body_has_lov(const struct lu_attr *la,
437 const struct mdt_body *body)
439 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
440 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
443 void mdt_client_compatibility(struct mdt_thread_info *info)
445 struct mdt_body *body;
446 struct ptlrpc_request *req = mdt_info_req(info);
447 struct obd_export *exp = req->rq_export;
448 struct md_attr *ma = &info->mti_attr;
449 struct lu_attr *la = &ma->ma_attr;
452 if (exp_connect_layout(exp))
453 /* the client can deal with 16-bit lmm_stripe_count */
456 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
458 if (!mdt_body_has_lov(la, body))
461 /* now we have a reply with a lov for a client not compatible with the
462 * layout lock so we have to clean the layout generation number */
463 if (S_ISREG(la->la_mode))
464 ma->ma_lmm->lmm_layout_gen = 0;
468 static int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
471 const struct lu_env *env = info->mti_env;
475 LASSERT(info->mti_big_lmm_used == 0);
476 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
480 /* big_lmm may need to be grown */
481 if (info->mti_big_lmmsize < rc) {
482 int size = size_roundup_power2(rc);
484 if (info->mti_big_lmmsize > 0) {
485 /* free old buffer */
486 LASSERT(info->mti_big_lmm);
487 OBD_FREE_LARGE(info->mti_big_lmm,
488 info->mti_big_lmmsize);
489 info->mti_big_lmm = NULL;
490 info->mti_big_lmmsize = 0;
493 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
494 if (info->mti_big_lmm == NULL)
496 info->mti_big_lmmsize = size;
498 LASSERT(info->mti_big_lmmsize >= rc);
500 info->mti_buf.lb_buf = info->mti_big_lmm;
501 info->mti_buf.lb_len = info->mti_big_lmmsize;
502 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
507 int mdt_attr_get_lov(struct mdt_thread_info *info,
508 struct mdt_object *o, struct md_attr *ma)
510 struct md_object *next = mdt_object_child(o);
511 struct lu_buf *buf = &info->mti_buf;
514 buf->lb_buf = ma->ma_lmm;
515 buf->lb_len = ma->ma_lmm_size;
516 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LOV);
518 ma->ma_lmm_size = rc;
519 ma->ma_valid |= MA_LOV;
521 } else if (rc == -ENODATA) {
524 } else if (rc == -ERANGE) {
525 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LOV);
527 info->mti_big_lmm_used = 1;
528 ma->ma_valid |= MA_LOV;
529 ma->ma_lmm = info->mti_big_lmm;
530 ma->ma_lmm_size = rc;
531 /* update mdt_max_mdsize so all clients
532 * will be aware about that */
533 if (info->mti_mdt->mdt_max_mdsize < rc)
534 info->mti_mdt->mdt_max_mdsize = rc;
542 int mdt_attr_get_pfid(struct mdt_thread_info *info,
543 struct mdt_object *o, struct lu_fid *pfid)
545 struct lu_buf *buf = &info->mti_buf;
546 struct link_ea_header *leh;
547 struct link_ea_entry *lee;
551 buf->lb_buf = info->mti_big_lmm;
552 buf->lb_len = info->mti_big_lmmsize;
553 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
554 buf, XATTR_NAME_LINK);
555 /* ignore errors, MA_PFID won't be set and it is
556 * up to the caller to treat this as an error */
557 if (rc == -ERANGE || buf->lb_len == 0) {
558 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
559 buf->lb_buf = info->mti_big_lmm;
560 buf->lb_len = info->mti_big_lmmsize;
565 if (rc < sizeof(*leh)) {
566 CERROR("short LinkEA on "DFID": rc = %d\n",
567 PFID(mdt_object_fid(o)), rc);
571 leh = (struct link_ea_header *) buf->lb_buf;
572 lee = (struct link_ea_entry *)(leh + 1);
573 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
574 leh->leh_magic = LINK_EA_MAGIC;
575 leh->leh_reccount = __swab32(leh->leh_reccount);
576 leh->leh_len = __swab64(leh->leh_len);
578 if (leh->leh_magic != LINK_EA_MAGIC)
580 if (leh->leh_reccount == 0)
583 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
584 fid_be_to_cpu(pfid, pfid);
589 int mdt_attr_get_complex(struct mdt_thread_info *info,
590 struct mdt_object *o, struct md_attr *ma)
592 const struct lu_env *env = info->mti_env;
593 struct md_object *next = mdt_object_child(o);
594 struct lu_buf *buf = &info->mti_buf;
595 u32 mode = lu_object_attr(&next->mo_lu);
596 int need = ma->ma_need;
602 if (need & MA_INODE) {
603 ma->ma_need = MA_INODE;
604 rc = mo_attr_get(env, next, ma);
607 ma->ma_valid |= MA_INODE;
610 if (need & MA_PFID) {
611 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
613 ma->ma_valid |= MA_PFID;
614 /* ignore this error, parent fid is not mandatory */
618 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
619 rc = mdt_attr_get_lov(info, o, ma);
624 if (need & MA_LMV && S_ISDIR(mode)) {
625 buf->lb_buf = ma->ma_lmv;
626 buf->lb_len = ma->ma_lmv_size;
627 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
629 ma->ma_lmv_size = rc2;
630 ma->ma_valid |= MA_LMV;
631 } else if (rc2 == -ENODATA) {
638 if (need & MA_SOM && S_ISREG(mode)) {
639 buf->lb_buf = info->mti_xattr_buf;
640 buf->lb_len = sizeof(info->mti_xattr_buf);
641 CLASSERT(sizeof(struct som_attrs) <=
642 sizeof(info->mti_xattr_buf));
643 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
644 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
646 ma->ma_valid |= MA_SOM;
647 else if (rc2 < 0 && rc2 != -ENODATA)
651 if (need & MA_HSM && S_ISREG(mode)) {
652 buf->lb_buf = info->mti_xattr_buf;
653 buf->lb_len = sizeof(info->mti_xattr_buf);
654 CLASSERT(sizeof(struct hsm_attrs) <=
655 sizeof(info->mti_xattr_buf));
656 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
657 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
659 ma->ma_valid |= MA_HSM;
660 else if (rc2 < 0 && rc2 != -ENODATA)
664 #ifdef CONFIG_FS_POSIX_ACL
665 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
666 buf->lb_buf = ma->ma_acl;
667 buf->lb_len = ma->ma_acl_size;
668 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
670 ma->ma_acl_size = rc2;
671 ma->ma_valid |= MA_ACL_DEF;
672 } else if (rc2 == -ENODATA) {
681 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
682 rc, ma->ma_valid, ma->ma_lmm);
686 static int mdt_getattr_internal(struct mdt_thread_info *info,
687 struct mdt_object *o, int ma_need)
689 struct md_object *next = mdt_object_child(o);
690 const struct mdt_body *reqbody = info->mti_body;
691 struct ptlrpc_request *req = mdt_info_req(info);
692 struct md_attr *ma = &info->mti_attr;
693 struct lu_attr *la = &ma->ma_attr;
694 struct req_capsule *pill = info->mti_pill;
695 const struct lu_env *env = info->mti_env;
696 struct mdt_body *repbody;
697 struct lu_buf *buffer = &info->mti_buf;
702 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
703 RETURN(err_serious(-ENOMEM));
705 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
709 if (mdt_object_remote(o)) {
710 /* This object is located on remote node.*/
711 /* Return -EIO for old client */
712 if (!mdt_is_dne_client(req->rq_export))
713 GOTO(out, rc = -EIO);
715 repbody->fid1 = *mdt_object_fid(o);
716 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
720 buffer->lb_len = reqbody->eadatasize;
721 if (buffer->lb_len > 0)
722 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
724 buffer->lb_buf = NULL;
726 /* If it is dir object and client require MEA, then we got MEA */
727 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
728 reqbody->valid & OBD_MD_MEA) {
729 /* Assumption: MDT_MD size is enough for lmv size. */
730 ma->ma_lmv = buffer->lb_buf;
731 ma->ma_lmv_size = buffer->lb_len;
732 ma->ma_need = MA_LMV | MA_INODE;
734 ma->ma_lmm = buffer->lb_buf;
735 ma->ma_lmm_size = buffer->lb_len;
736 ma->ma_need = MA_LOV | MA_INODE | MA_HSM;
739 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
740 reqbody->valid & OBD_MD_FLDIREA &&
741 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
742 /* get default stripe info for this dir. */
743 ma->ma_need |= MA_LOV_DEF;
745 ma->ma_need |= ma_need;
746 if (ma->ma_need & MA_SOM)
747 ma->ma_som = &info->mti_u.som.data;
749 rc = mdt_attr_get_complex(info, o, ma);
751 CERROR("%s: getattr error for "DFID": rc = %d\n",
752 mdt_obd_name(info->mti_mdt),
753 PFID(mdt_object_fid(o)), rc);
757 /* if file is released, check if a restore is running */
758 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
759 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
760 repbody->t_state = MS_RESTORE;
761 repbody->valid |= OBD_MD_TSTATE;
764 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
766 /* the Lustre protocol supposes to return default striping
767 * on the user-visible root if explicitly requested */
768 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
769 (ma->ma_need & MA_LOV_DEF && is_root) && (ma->ma_need & MA_LOV)) {
770 struct lu_fid rootfid;
771 struct mdt_object *root;
772 struct mdt_device *mdt = info->mti_mdt;
774 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
777 root = mdt_object_find(env, mdt, &rootfid);
779 RETURN(PTR_ERR(root));
780 rc = mdt_attr_get_lov(info, root, ma);
781 mdt_object_put(info->mti_env, root);
783 CERROR("%s: getattr error for "DFID": rc = %d\n",
784 mdt_obd_name(info->mti_mdt),
785 PFID(mdt_object_fid(o)), rc);
790 if (likely(ma->ma_valid & MA_INODE))
791 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
795 if (mdt_body_has_lov(la, reqbody)) {
796 if (ma->ma_valid & MA_LOV) {
797 LASSERT(ma->ma_lmm_size);
798 mdt_dump_lmm(D_INFO, ma->ma_lmm);
799 repbody->eadatasize = ma->ma_lmm_size;
800 if (S_ISDIR(la->la_mode))
801 repbody->valid |= OBD_MD_FLDIREA;
803 repbody->valid |= OBD_MD_FLEASIZE;
805 if (ma->ma_valid & MA_LMV) {
806 LASSERT(S_ISDIR(la->la_mode));
807 repbody->eadatasize = ma->ma_lmv_size;
808 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
810 } else if (S_ISLNK(la->la_mode) &&
811 reqbody->valid & OBD_MD_LINKNAME) {
812 buffer->lb_buf = ma->ma_lmm;
813 /* eadatasize from client includes NULL-terminator, so
814 * there is no need to read it */
815 buffer->lb_len = reqbody->eadatasize - 1;
816 rc = mo_readlink(env, next, buffer);
817 if (unlikely(rc <= 0)) {
818 CERROR("%s: readlink failed for "DFID": rc = %d\n",
819 mdt_obd_name(info->mti_mdt),
820 PFID(mdt_object_fid(o)), rc);
823 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
825 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
827 repbody->valid |= OBD_MD_LINKNAME;
828 /* we need to report back size with NULL-terminator
829 * because client expects that */
830 repbody->eadatasize = rc + 1;
831 if (repbody->eadatasize != reqbody->eadatasize)
832 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
833 "on "DFID ", expected %d\n",
834 mdt_obd_name(info->mti_mdt),
835 rc, PFID(mdt_object_fid(o)),
836 reqbody->eadatasize - 1);
838 ((char *)ma->ma_lmm)[rc] = 0;
840 /* If the total CDEBUG() size is larger than a page, it
841 * will print a warning to the console, avoid this by
842 * printing just the last part of the symlink. */
843 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
844 print_limit < rc ? "..." : "", print_limit,
845 (char *)ma->ma_lmm + rc - print_limit, rc);
850 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
851 repbody->max_cookiesize = 0;
852 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
853 repbody->valid |= OBD_MD_FLMODEASIZE;
854 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
855 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
856 repbody->max_cookiesize);
859 if (exp_connect_rmtclient(info->mti_exp) &&
860 reqbody->valid & OBD_MD_FLRMTPERM) {
861 void *buf = req_capsule_server_get(pill, &RMF_ACL);
863 /* mdt_getattr_lock only */
864 rc = mdt_pack_remote_perm(info, o, buf);
866 repbody->valid &= ~OBD_MD_FLRMTPERM;
867 repbody->aclsize = 0;
870 repbody->valid |= OBD_MD_FLRMTPERM;
871 repbody->aclsize = sizeof(struct mdt_remote_perm);
874 #ifdef CONFIG_FS_POSIX_ACL
875 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
876 (reqbody->valid & OBD_MD_FLACL)) {
877 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
878 buffer->lb_len = req_capsule_get_size(pill,
879 &RMF_ACL, RCL_SERVER);
880 if (buffer->lb_len > 0) {
881 rc = mo_xattr_get(env, next, buffer,
882 XATTR_NAME_ACL_ACCESS);
884 if (rc == -ENODATA) {
885 repbody->aclsize = 0;
886 repbody->valid |= OBD_MD_FLACL;
888 } else if (rc == -EOPNOTSUPP) {
891 CERROR("%s: unable to read "DFID
893 mdt_obd_name(info->mti_mdt),
894 PFID(mdt_object_fid(o)), rc);
897 repbody->aclsize = rc;
898 repbody->valid |= OBD_MD_FLACL;
905 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
906 info->mti_mdt->mdt_opts.mo_mds_capa &&
907 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
908 struct lustre_capa *capa;
910 capa = req_capsule_server_get(pill, &RMF_CAPA1);
912 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
913 rc = mo_capa_get(env, next, capa, 0);
916 repbody->valid |= OBD_MD_FLMDSCAPA;
921 mdt_counter_incr(req, LPROC_MDT_GETATTR);
926 static int mdt_renew_capa(struct mdt_thread_info *info)
928 struct mdt_object *obj = info->mti_object;
929 struct mdt_body *body;
930 struct lustre_capa *capa, *c;
934 /* if object doesn't exist, or server has disabled capability,
935 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
938 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
939 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
942 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
943 LASSERT(body != NULL);
945 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
948 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
952 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
954 body->valid |= OBD_MD_FLOSSCAPA;
958 int mdt_getattr(struct mdt_thread_info *info)
960 struct mdt_object *obj = info->mti_object;
961 struct req_capsule *pill = info->mti_pill;
962 struct mdt_body *reqbody;
963 struct mdt_body *repbody;
968 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
971 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
972 rc = req_capsule_server_pack(pill);
974 RETURN(err_serious(rc));
975 rc = mdt_renew_capa(info);
976 GOTO(out_shrink, rc);
979 LASSERT(obj != NULL);
980 LASSERT(lu_object_assert_exists(&obj->mot_obj));
982 mode = lu_object_attr(&obj->mot_obj);
984 /* old clients may not report needed easize, use max value then */
985 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
986 reqbody->eadatasize == 0 ?
987 info->mti_mdt->mdt_max_mdsize :
988 reqbody->eadatasize);
990 rc = req_capsule_server_pack(pill);
991 if (unlikely(rc != 0))
992 RETURN(err_serious(rc));
994 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
995 LASSERT(repbody != NULL);
996 repbody->eadatasize = 0;
997 repbody->aclsize = 0;
999 if (reqbody->valid & OBD_MD_FLRMTPERM)
1000 rc = mdt_init_ucred(info, reqbody);
1002 rc = mdt_check_ucred(info);
1004 GOTO(out_shrink, rc);
1006 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1009 * Don't check capability at all, because rename might getattr for
1010 * remote obj, and at that time no capability is available.
1012 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
1013 rc = mdt_getattr_internal(info, obj, 0);
1014 if (reqbody->valid & OBD_MD_FLRMTPERM)
1015 mdt_exit_ucred(info);
1018 mdt_client_compatibility(info);
1019 rc2 = mdt_fix_reply(info);
1025 int mdt_is_subdir(struct mdt_thread_info *info)
1027 struct mdt_object *o = info->mti_object;
1028 struct req_capsule *pill = info->mti_pill;
1029 const struct mdt_body *body = info->mti_body;
1030 struct mdt_body *repbody;
1036 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1039 * We save last checked parent fid to @repbody->fid1 for remote
1042 LASSERT(fid_is_sane(&body->fid2));
1043 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
1044 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1045 &body->fid2, &repbody->fid1);
1046 if (rc == 0 || rc == -EREMOTE)
1047 repbody->valid |= OBD_MD_FLID;
1052 int mdt_swap_layouts(struct mdt_thread_info *info)
1054 struct ptlrpc_request *req = mdt_info_req(info);
1055 struct obd_export *exp = req->rq_export;
1056 struct mdt_object *o1, *o2, *o;
1057 struct mdt_lock_handle *lh1, *lh2;
1058 struct mdc_swap_layouts *msl;
1062 /* client does not support layout lock, so layout swaping
1064 * FIXME: there is a problem for old clients which don't support
1065 * layout lock yet. If those clients have already opened the file
1066 * they won't be notified at all so that old layout may still be
1067 * used to do IO. This can be fixed after file release is landed by
1068 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1069 if (!exp_connect_layout(exp))
1070 RETURN(-EOPNOTSUPP);
1072 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1073 mdt_set_capainfo(info, 0, &info->mti_body->fid1,
1074 req_capsule_client_get(info->mti_pill,
1077 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1078 mdt_set_capainfo(info, 1, &info->mti_body->fid2,
1079 req_capsule_client_get(info->mti_pill,
1082 o1 = info->mti_object;
1083 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1084 &info->mti_body->fid2);
1086 GOTO(out, rc = PTR_ERR(o));
1088 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1089 GOTO(put, rc = -ENOENT);
1091 rc = lu_fid_cmp(&info->mti_body->fid1, &info->mti_body->fid2);
1092 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1098 /* permission check. Make sure the calling process having permission
1099 * to write both files. */
1100 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1105 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1110 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1112 GOTO(put, rc = -EPROTO);
1114 lh1 = &info->mti_lh[MDT_LH_NEW];
1115 mdt_lock_reg_init(lh1, LCK_EX);
1116 lh2 = &info->mti_lh[MDT_LH_OLD];
1117 mdt_lock_reg_init(lh2, LCK_EX);
1119 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT,
1124 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT,
1129 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1130 mdt_object_child(o2), msl->msl_flags);
1133 mdt_object_unlock(info, o2, lh2, rc);
1135 mdt_object_unlock(info, o1, lh1, rc);
1137 mdt_object_put(info->mti_env, o);
1142 static int mdt_raw_lookup(struct mdt_thread_info *info,
1143 struct mdt_object *parent,
1144 const struct lu_name *lname,
1145 struct ldlm_reply *ldlm_rep)
1147 struct md_object *next = mdt_object_child(info->mti_object);
1148 const struct mdt_body *reqbody = info->mti_body;
1149 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1150 struct mdt_body *repbody;
1154 if (reqbody->valid != OBD_MD_FLID)
1157 LASSERT(!info->mti_cross_ref);
1159 /* Only got the fid of this obj by name */
1160 fid_zero(child_fid);
1161 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1164 /* XXX is raw_lookup possible as intent operation? */
1167 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1170 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1172 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1175 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1176 repbody->fid1 = *child_fid;
1177 repbody->valid = OBD_MD_FLID;
1183 * UPDATE lock should be taken against parent, and be release before exit;
1184 * child_bits lock should be taken against child, and be returned back:
1185 * (1)normal request should release the child lock;
1186 * (2)intent request will grant the lock to client.
1188 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1189 struct mdt_lock_handle *lhc,
1191 struct ldlm_reply *ldlm_rep)
1193 struct ptlrpc_request *req = mdt_info_req(info);
1194 struct mdt_body *reqbody = NULL;
1195 struct mdt_object *parent = info->mti_object;
1196 struct mdt_object *child;
1197 struct md_object *next = mdt_object_child(parent);
1198 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1199 struct lu_name *lname = NULL;
1200 const char *name = NULL;
1202 struct mdt_lock_handle *lhp = NULL;
1203 struct ldlm_lock *lock;
1204 struct ldlm_res_id *res_id;
1211 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1212 LASSERT(ergo(is_resent,
1213 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1215 LASSERT(parent != NULL);
1216 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
1218 RETURN(err_serious(-EFAULT));
1220 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
1222 if (!info->mti_cross_ref) {
1224 * XXX: Check for "namelen == 0" is for getattr by fid
1225 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1226 * that is the name must contain at least one character and
1227 * the terminating '\0'
1230 reqbody = req_capsule_client_get(info->mti_pill,
1232 if (unlikely(reqbody == NULL))
1233 RETURN(err_serious(-EFAULT));
1235 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1236 RETURN(err_serious(-EINVAL));
1239 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1241 PFID(mdt_object_fid(parent)),
1242 PFID(&reqbody->fid2), ldlm_rep);
1244 lname = mdt_name(info->mti_env, (char *)name, namelen);
1245 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
1246 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1250 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1252 if (unlikely(!mdt_object_exists(parent))) {
1253 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1255 "Parent doesn't exist!\n");
1257 } else if (!info->mti_cross_ref) {
1258 LASSERTF(!mdt_object_remote(parent),
1259 "Parent "DFID" is on remote server\n",
1260 PFID(mdt_object_fid(parent)));
1263 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1271 if (info->mti_cross_ref) {
1272 /* Only getattr on the child. Parent is on another node. */
1273 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1275 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1276 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1279 /* Do not take lock for resent case. */
1280 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1281 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1282 lhc->mlh_reg_lh.cookie);
1283 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1284 &lock->l_resource->lr_name));
1285 LDLM_LOCK_PUT(lock);
1288 mdt_lock_handle_init(lhc);
1289 mdt_lock_reg_init(lhc, LCK_PR);
1292 * Object's name is on another MDS, no lookup lock is
1293 * needed here but update is.
1295 child_bits &= ~MDS_INODELOCK_LOOKUP;
1296 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1298 rc = mdt_object_lock(info, child, lhc, child_bits,
1302 /* Finally, we can get attr for child. */
1303 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1305 rc = mdt_getattr_internal(info, child, 0);
1306 if (unlikely(rc != 0))
1307 mdt_object_unlock(info, child, lhc, 1);
1313 /* step 1: lock parent only if parent is a directory */
1314 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1315 lhp = &info->mti_lh[MDT_LH_PARENT];
1316 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
1317 rc = mdt_object_lock(info, parent, lhp,
1318 MDS_INODELOCK_UPDATE,
1320 if (unlikely(rc != 0))
1324 /* step 2: lookup child's fid by name */
1325 fid_zero(child_fid);
1326 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1331 mdt_set_disposition(info, ldlm_rep,
1333 GOTO(out_parent, rc);
1335 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1337 *child_fid = reqbody->fid2;
1338 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1342 *step 3: find the child object by fid & lock it.
1343 * regardless if it is local or remote.
1345 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1347 if (unlikely(IS_ERR(child)))
1348 GOTO(out_parent, rc = PTR_ERR(child));
1350 /* Do not take lock for resent case. */
1351 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1352 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1353 lhc->mlh_reg_lh.cookie);
1355 res_id = &lock->l_resource->lr_name;
1356 if (!fid_res_name_eq(mdt_object_fid(child),
1357 &lock->l_resource->lr_name)) {
1358 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1359 &lock->l_resource->lr_name),
1360 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1361 PLDLMRES(lock->l_resource),
1362 PFID(mdt_object_fid(parent)));
1363 CWARN("Although resent, but still not get child lock"
1364 "parent:"DFID" child:"DFID"\n",
1365 PFID(mdt_object_fid(parent)),
1366 PFID(mdt_object_fid(child)));
1367 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1368 LDLM_LOCK_PUT(lock);
1371 LDLM_LOCK_PUT(lock);
1374 bool try_layout = false;
1377 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1378 mdt_lock_handle_init(lhc);
1379 mdt_lock_reg_init(lhc, LCK_PR);
1381 if (!mdt_object_exists(child)) {
1382 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1384 "Object doesn't exist!\n");
1385 GOTO(out_child, rc = -ENOENT);
1388 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1389 mdt_object_exists(child) && !mdt_object_remote(child)) {
1390 struct md_attr *ma = &info->mti_attr;
1393 ma->ma_need = MA_INODE;
1394 rc = mdt_attr_get_complex(info, child, ma);
1395 if (unlikely(rc != 0))
1396 GOTO(out_child, rc);
1398 /* If the file has not been changed for some time, we
1399 * return not only a LOOKUP lock, but also an UPDATE
1400 * lock and this might save us RPC on later STAT. For
1401 * directories, it also let negative dentry starts
1402 * working for this dir. */
1403 if (ma->ma_valid & MA_INODE &&
1404 ma->ma_attr.la_valid & LA_CTIME &&
1405 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1406 ma->ma_attr.la_ctime < cfs_time_current_sec())
1407 child_bits |= MDS_INODELOCK_UPDATE;
1410 /* layout lock must be granted in a best-effort way
1411 * for IT operations */
1412 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1413 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1414 exp_connect_layout(info->mti_exp) &&
1415 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1417 /* try to grant layout lock for regular file. */
1423 child_bits |= MDS_INODELOCK_LAYOUT;
1424 /* try layout lock, it may fail to be granted due to
1425 * contention at LOOKUP or UPDATE */
1426 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1428 child_bits &= ~MDS_INODELOCK_LAYOUT;
1429 LASSERT(child_bits != 0);
1430 rc = mdt_object_lock(info, child, lhc,
1431 child_bits, MDT_CROSS_LOCK);
1436 rc = mdt_object_lock(info, child, lhc, child_bits,
1439 if (unlikely(rc != 0))
1440 GOTO(out_child, rc);
1443 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1444 /* Get MA_SOM attributes if update lock is given. */
1446 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1447 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1450 /* finally, we can get attr for child. */
1451 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1452 rc = mdt_getattr_internal(info, child, ma_need);
1453 if (unlikely(rc != 0)) {
1454 mdt_object_unlock(info, child, lhc, 1);
1456 /* Debugging code. */
1457 res_id = &lock->l_resource->lr_name;
1458 LDLM_DEBUG(lock, "Returning lock to client");
1459 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1460 &lock->l_resource->lr_name),
1461 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1462 PLDLMRES(lock->l_resource),
1463 PFID(mdt_object_fid(child)));
1464 if (mdt_object_exists(child) && !mdt_object_remote(child))
1465 mdt_pack_size2body(info, child);
1468 LDLM_LOCK_PUT(lock);
1472 mdt_object_put(info->mti_env, child);
1475 mdt_object_unlock(info, parent, lhp, 1);
1479 /* normal handler: should release the child lock */
1480 int mdt_getattr_name(struct mdt_thread_info *info)
1482 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1483 struct mdt_body *reqbody;
1484 struct mdt_body *repbody;
1488 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1489 LASSERT(reqbody != NULL);
1490 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1491 LASSERT(repbody != NULL);
1493 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1494 repbody->eadatasize = 0;
1495 repbody->aclsize = 0;
1497 rc = mdt_init_ucred(info, reqbody);
1499 GOTO(out_shrink, rc);
1501 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1502 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1503 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1504 lhc->mlh_reg_lh.cookie = 0;
1506 mdt_exit_ucred(info);
1509 mdt_client_compatibility(info);
1510 rc2 = mdt_fix_reply(info);
1516 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1517 void *karg, void *uarg);
1519 int mdt_set_info(struct mdt_thread_info *info)
1521 struct ptlrpc_request *req = mdt_info_req(info);
1524 int keylen, vallen, rc = 0;
1527 rc = req_capsule_server_pack(info->mti_pill);
1531 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1533 DEBUG_REQ(D_HA, req, "no set_info key");
1537 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1540 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1542 DEBUG_REQ(D_HA, req, "no set_info val");
1546 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1549 /* Swab any part of val you need to here */
1550 if (KEY_IS(KEY_READ_ONLY)) {
1552 lustre_msg_set_status(req->rq_repmsg, 0);
1554 spin_lock(&req->rq_export->exp_lock);
1556 *exp_connect_flags_ptr(req->rq_export) |=
1559 *exp_connect_flags_ptr(req->rq_export) &=
1560 ~OBD_CONNECT_RDONLY;
1561 spin_unlock(&req->rq_export->exp_lock);
1563 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1564 struct changelog_setinfo *cs =
1565 (struct changelog_setinfo *)val;
1566 if (vallen != sizeof(*cs)) {
1567 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1570 if (ptlrpc_req_need_swab(req)) {
1571 __swab64s(&cs->cs_recno);
1572 __swab32s(&cs->cs_id);
1575 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1577 lustre_msg_set_status(req->rq_repmsg, rc);
1585 int mdt_connect_check_sptlrpc(struct mdt_device *mdt, struct obd_export *exp,
1586 struct ptlrpc_request *req);
1589 * Top-level handler for MDT connection requests.
1591 int mdt_connect(struct mdt_thread_info *info)
1594 struct obd_connect_data *reply;
1595 struct obd_export *exp;
1596 struct ptlrpc_request *req = mdt_info_req(info);
1600 rc = target_handle_connect(req);
1602 RETURN(err_serious(rc));
1604 LASSERT(req->rq_export != NULL);
1605 exp = req->rq_export;
1606 info->mti_exp = exp;
1607 info->mti_mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
1608 rc = mdt_init_sec_level(info);
1612 rc = mdt_connect_check_sptlrpc(info->mti_mdt, exp, req);
1616 /* To avoid exposing partially initialized connection flags, changes up
1617 * to this point have been staged in reply->ocd_connect_flags. Now that
1618 * connection handling has completed successfully, atomically update
1619 * the connect flags in the shared export data structure. LU-1623 */
1620 reply = req_capsule_server_get(info->mti_pill, &RMF_CONNECT_DATA);
1621 spin_lock(&exp->exp_lock);
1622 *exp_connect_flags_ptr(exp) = reply->ocd_connect_flags;
1623 spin_unlock(&exp->exp_lock);
1625 rc = mdt_init_idmap(info);
1630 obd_disconnect(class_export_get(req->rq_export));
1634 int mdt_disconnect(struct mdt_thread_info *info)
1639 rc = target_handle_disconnect(mdt_info_req(info));
1641 rc = err_serious(rc);
1645 static int mdt_sendpage(struct mdt_thread_info *info,
1646 struct lu_rdpg *rdpg, int nob)
1648 struct ptlrpc_request *req = mdt_info_req(info);
1649 struct obd_export *exp = req->rq_export;
1650 struct ptlrpc_bulk_desc *desc;
1651 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1658 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1, BULK_PUT_SOURCE,
1663 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1664 /* old client requires reply size in it's PAGE_SIZE,
1665 * which is rdpg->rp_count */
1666 nob = rdpg->rp_count;
1668 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1669 i++, tmpcount -= tmpsize) {
1670 tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
1671 ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
1674 LASSERT(desc->bd_nob == nob);
1675 rc = target_bulk_io(exp, desc, lwi);
1676 ptlrpc_free_bulk_pin(desc);
1680 int mdt_readpage(struct mdt_thread_info *info)
1682 struct mdt_object *object = info->mti_object;
1683 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1684 struct mdt_body *reqbody;
1685 struct mdt_body *repbody;
1690 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1691 RETURN(err_serious(-ENOMEM));
1693 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1694 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1695 if (reqbody == NULL || repbody == NULL)
1696 RETURN(err_serious(-EFAULT));
1699 * prepare @rdpg before calling lower layers and transfer itself. Here
1700 * reqbody->size contains offset of where to start to read and
1701 * reqbody->nlink contains number bytes to read.
1703 rdpg->rp_hash = reqbody->size;
1704 if (rdpg->rp_hash != reqbody->size) {
1705 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1706 rdpg->rp_hash, reqbody->size);
1710 rdpg->rp_attrs = reqbody->mode;
1711 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_64BITHASH)
1712 rdpg->rp_attrs |= LUDA_64BITHASH;
1713 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1714 exp_max_brw_size(info->mti_exp));
1715 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1717 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1718 if (rdpg->rp_pages == NULL)
1721 for (i = 0; i < rdpg->rp_npages; ++i) {
1722 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1723 if (rdpg->rp_pages[i] == NULL)
1724 GOTO(free_rdpg, rc = -ENOMEM);
1727 /* call lower layers to fill allocated pages with directory data */
1728 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1730 GOTO(free_rdpg, rc);
1732 /* send pages to client */
1733 rc = mdt_sendpage(info, rdpg, rc);
1738 for (i = 0; i < rdpg->rp_npages; i++)
1739 if (rdpg->rp_pages[i] != NULL)
1740 __free_page(rdpg->rp_pages[i]);
1741 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1743 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1749 static int mdt_reint_internal(struct mdt_thread_info *info,
1750 struct mdt_lock_handle *lhc,
1753 struct req_capsule *pill = info->mti_pill;
1754 struct mdt_body *repbody;
1759 rc = mdt_reint_unpack(info, op);
1761 CERROR("Can't unpack reint, rc %d\n", rc);
1762 RETURN(err_serious(rc));
1765 /* for replay (no_create) lmm is not needed, client has it already */
1766 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1767 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1768 info->mti_rr.rr_eadatalen);
1770 /* llog cookies are always 0, the field is kept for compatibility */
1771 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1772 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1774 rc = req_capsule_server_pack(pill);
1776 CERROR("Can't pack response, rc %d\n", rc);
1777 RETURN(err_serious(rc));
1780 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1781 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1783 repbody->eadatasize = 0;
1784 repbody->aclsize = 0;
1787 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1789 /* for replay no cookkie / lmm need, because client have this already */
1790 if (info->mti_spec.no_create)
1791 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1792 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1794 rc = mdt_init_ucred_reint(info);
1796 GOTO(out_shrink, rc);
1798 rc = mdt_fix_attr_ucred(info, op);
1800 GOTO(out_ucred, rc = err_serious(rc));
1802 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1803 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1804 GOTO(out_ucred, rc);
1806 rc = mdt_reint_rec(info, lhc);
1809 mdt_exit_ucred(info);
1811 mdt_client_compatibility(info);
1812 rc2 = mdt_fix_reply(info);
1818 static long mdt_reint_opcode(struct mdt_thread_info *info,
1819 const struct req_format **fmt)
1821 struct mdt_rec_reint *rec;
1824 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1826 opc = rec->rr_opcode;
1827 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1828 if (opc < REINT_MAX && fmt[opc] != NULL)
1829 req_capsule_extend(info->mti_pill, fmt[opc]);
1831 CERROR("%s: Unsupported opcode '%ld' from client '%s': "
1832 "rc = %d\n", mdt_obd_name(info->mti_mdt), opc,
1833 info->mti_mdt->mdt_ldlm_client->cli_name,
1835 opc = err_serious(-EFAULT);
1838 opc = err_serious(-EFAULT);
1843 int mdt_reint(struct mdt_thread_info *info)
1848 static const struct req_format *reint_fmts[REINT_MAX] = {
1849 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1850 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1851 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1852 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1853 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1854 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1855 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1856 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK
1861 opc = mdt_reint_opcode(info, reint_fmts);
1864 * No lock possible here from client to pass it to reint code
1867 rc = mdt_reint_internal(info, NULL, opc);
1872 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1876 /* this should sync the whole device */
1877 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1879 struct dt_device *dt = mdt->mdt_bottom;
1883 rc = dt->dd_ops->dt_sync(env, dt);
1887 /* this should sync this object */
1888 static int mdt_object_sync(struct mdt_thread_info *info)
1890 struct md_object *next;
1894 if (!mdt_object_exists(info->mti_object)) {
1895 CWARN("Non existing object "DFID"!\n",
1896 PFID(mdt_object_fid(info->mti_object)));
1899 next = mdt_object_child(info->mti_object);
1900 rc = mo_object_sync(info->mti_env, next);
1905 int mdt_sync(struct mdt_thread_info *info)
1907 struct ptlrpc_request *req = mdt_info_req(info);
1908 struct req_capsule *pill = info->mti_pill;
1909 struct mdt_body *body;
1913 /* The fid may be zero, so we req_capsule_set manually */
1914 req_capsule_set(pill, &RQF_MDS_SYNC);
1916 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1918 RETURN(err_serious(-EINVAL));
1920 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1921 RETURN(err_serious(-ENOMEM));
1923 if (fid_seq(&body->fid1) == 0) {
1924 /* sync the whole device */
1925 rc = req_capsule_server_pack(pill);
1927 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1929 rc = err_serious(rc);
1931 /* sync an object */
1932 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1934 rc = mdt_object_sync(info);
1936 const struct lu_fid *fid;
1937 struct lu_attr *la = &info->mti_attr.ma_attr;
1939 info->mti_attr.ma_need = MA_INODE;
1940 info->mti_attr.ma_valid = 0;
1941 rc = mdt_attr_get_complex(info, info->mti_object,
1944 body = req_capsule_server_get(pill,
1946 fid = mdt_object_fid(info->mti_object);
1947 mdt_pack_attr2body(info, body, la, fid);
1951 rc = err_serious(rc);
1954 mdt_counter_incr(req, LPROC_MDT_SYNC);
1960 * Quotacheck handler.
1961 * in-kernel quotacheck isn't supported any more.
1963 int mdt_quotacheck(struct mdt_thread_info *info)
1965 struct obd_quotactl *oqctl;
1969 oqctl = req_capsule_client_get(info->mti_pill, &RMF_OBD_QUOTACTL);
1971 RETURN(err_serious(-EPROTO));
1973 rc = req_capsule_server_pack(info->mti_pill);
1975 RETURN(err_serious(rc));
1977 /* deprecated, not used any more */
1978 RETURN(-EOPNOTSUPP);
1982 * Handle quota control requests to consult current usage/limit, but also
1983 * to configure quota enforcement
1985 int mdt_quotactl(struct mdt_thread_info *info)
1987 struct obd_export *exp = info->mti_exp;
1988 struct req_capsule *pill = info->mti_pill;
1989 struct obd_quotactl *oqctl, *repoqc;
1991 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
1994 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1996 RETURN(err_serious(-EPROTO));
1998 rc = req_capsule_server_pack(pill);
2000 RETURN(err_serious(rc));
2002 switch (oqctl->qc_cmd) {
2004 case LUSTRE_Q_INVALIDATE:
2005 case LUSTRE_Q_FINVALIDATE:
2009 /* deprecated, not used any more */
2010 RETURN(-EOPNOTSUPP);
2011 /* master quotactl */
2017 RETURN(-EOPNOTSUPP);
2018 /* slave quotactl */
2023 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2027 /* map uid/gid for remote client */
2029 if (exp_connect_rmtclient(exp)) {
2030 struct lustre_idmap_table *idmap;
2032 idmap = mdt_req2med(mdt_info_req(info))->med_idmap;
2034 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2035 oqctl->qc_cmd != Q_GETINFO))
2038 if (oqctl->qc_type == USRQUOTA)
2039 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2041 else if (oqctl->qc_type == GRPQUOTA)
2042 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2047 if (id == CFS_IDMAP_NOTFOUND) {
2048 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2053 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2055 RETURN(err_serious(-EFAULT));
2057 if (oqctl->qc_id != id)
2058 swap(oqctl->qc_id, id);
2060 switch (oqctl->qc_cmd) {
2066 /* forward quotactl request to QMT */
2067 rc = qmt_hdls.qmth_quotactl(info->mti_env, qmt, oqctl);
2072 /* slave quotactl */
2073 rc = lquotactl_slv(info->mti_env, info->mti_mdt->mdt_bottom,
2078 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2082 if (oqctl->qc_id != id)
2083 swap(oqctl->qc_id, id);
2090 * OBD PING and other handlers.
2092 int mdt_obd_ping(struct mdt_thread_info *info)
2097 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
2099 rc = target_handle_ping(mdt_info_req(info));
2101 rc = err_serious(rc);
2106 * OBD_IDX_READ handler
2108 int mdt_obd_idx_read(struct mdt_thread_info *info)
2110 struct mdt_device *mdt = info->mti_mdt;
2111 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2112 struct idx_info *req_ii, *rep_ii;
2116 memset(rdpg, 0, sizeof(*rdpg));
2117 req_capsule_set(info->mti_pill, &RQF_OBD_IDX_READ);
2119 /* extract idx_info buffer from request & reply */
2120 req_ii = req_capsule_client_get(info->mti_pill, &RMF_IDX_INFO);
2121 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
2122 RETURN(err_serious(-EPROTO));
2124 rc = req_capsule_server_pack(info->mti_pill);
2126 RETURN(err_serious(rc));
2128 rep_ii = req_capsule_server_get(info->mti_pill, &RMF_IDX_INFO);
2130 RETURN(err_serious(-EFAULT));
2131 rep_ii->ii_magic = IDX_INFO_MAGIC;
2133 /* extract hash to start with */
2134 rdpg->rp_hash = req_ii->ii_hash_start;
2136 /* extract requested attributes */
2137 rdpg->rp_attrs = req_ii->ii_attrs;
2139 /* check that fid packed in request is valid and supported */
2140 if (!fid_is_sane(&req_ii->ii_fid))
2142 rep_ii->ii_fid = req_ii->ii_fid;
2145 rep_ii->ii_flags = req_ii->ii_flags;
2147 /* compute number of pages to allocate, ii_count is the number of 4KB
2149 if (req_ii->ii_count <= 0)
2150 GOTO(out, rc = -EFAULT);
2151 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
2152 exp_max_brw_size(info->mti_exp));
2153 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
2156 /* allocate pages to store the containers */
2157 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2158 if (rdpg->rp_pages == NULL)
2159 GOTO(out, rc = -ENOMEM);
2160 for (i = 0; i < rdpg->rp_npages; i++) {
2161 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
2162 if (rdpg->rp_pages[i] == NULL)
2163 GOTO(out, rc = -ENOMEM);
2166 /* populate pages with key/record pairs */
2167 rc = dt_index_read(info->mti_env, mdt->mdt_bottom, rep_ii, rdpg);
2171 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
2172 "asked %d > %d\n", rc, rdpg->rp_count);
2174 /* send pages to client */
2175 rc = mdt_sendpage(info, rdpg, rc);
2179 if (rdpg->rp_pages) {
2180 for (i = 0; i < rdpg->rp_npages; i++)
2181 if (rdpg->rp_pages[i])
2182 __free_page(rdpg->rp_pages[i]);
2183 OBD_FREE(rdpg->rp_pages,
2184 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2189 int mdt_obd_log_cancel(struct mdt_thread_info *info)
2191 return err_serious(-EOPNOTSUPP);
2194 int mdt_obd_qc_callback(struct mdt_thread_info *info)
2196 return err_serious(-EOPNOTSUPP);
2203 /** clone llog ctxt from child (mdd)
2204 * This allows remote llog (replicator) access.
2205 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2206 * context was originally set up, or we can handle them directly.
2207 * I choose the latter, but that means I need any llog
2208 * contexts set up by child to be accessable by the mdt. So we clone the
2209 * context into our context list here.
2211 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2214 struct md_device *next = mdt->mdt_child;
2215 struct llog_ctxt *ctxt;
2218 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2221 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2222 if (rc || ctxt == NULL) {
2226 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2228 CERROR("Can't set mdt ctxt %d\n", rc);
2233 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2234 struct mdt_device *mdt, int idx)
2236 struct llog_ctxt *ctxt;
2238 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2241 /* Put once for the get we just did, and once for the clone */
2242 llog_ctxt_put(ctxt);
2243 llog_ctxt_put(ctxt);
2247 int mdt_llog_create(struct mdt_thread_info *info)
2251 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
2252 rc = llog_origin_handle_open(mdt_info_req(info));
2253 return (rc < 0 ? err_serious(rc) : rc);
2256 int mdt_llog_destroy(struct mdt_thread_info *info)
2260 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
2261 rc = llog_origin_handle_destroy(mdt_info_req(info));
2262 return (rc < 0 ? err_serious(rc) : rc);
2265 int mdt_llog_read_header(struct mdt_thread_info *info)
2269 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
2270 rc = llog_origin_handle_read_header(mdt_info_req(info));
2271 return (rc < 0 ? err_serious(rc) : rc);
2274 int mdt_llog_next_block(struct mdt_thread_info *info)
2278 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
2279 rc = llog_origin_handle_next_block(mdt_info_req(info));
2280 return (rc < 0 ? err_serious(rc) : rc);
2283 int mdt_llog_prev_block(struct mdt_thread_info *info)
2287 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
2288 rc = llog_origin_handle_prev_block(mdt_info_req(info));
2289 return (rc < 0 ? err_serious(rc) : rc);
2297 static struct ldlm_callback_suite cbs = {
2298 .lcs_completion = ldlm_server_completion_ast,
2299 .lcs_blocking = ldlm_server_blocking_ast,
2300 .lcs_glimpse = ldlm_server_glimpse_ast
2303 int mdt_enqueue(struct mdt_thread_info *info)
2305 struct ptlrpc_request *req;
2309 * info->mti_dlm_req already contains swapped and (if necessary)
2310 * converted dlm request.
2312 LASSERT(info->mti_dlm_req != NULL);
2314 req = mdt_info_req(info);
2315 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2316 req, info->mti_dlm_req, &cbs);
2317 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2318 return rc ? err_serious(rc) : req->rq_status;
2321 int mdt_convert(struct mdt_thread_info *info)
2324 struct ptlrpc_request *req;
2326 LASSERT(info->mti_dlm_req);
2327 req = mdt_info_req(info);
2328 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2329 return rc ? err_serious(rc) : req->rq_status;
2332 int mdt_bl_callback(struct mdt_thread_info *info)
2334 CERROR("bl callbacks should not happen on MDS\n");
2336 return err_serious(-EOPNOTSUPP);
2339 int mdt_cp_callback(struct mdt_thread_info *info)
2341 CERROR("cp callbacks should not happen on MDS\n");
2343 return err_serious(-EOPNOTSUPP);
2347 * sec context handlers
2349 int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2353 rc = mdt_handle_idmap(info);
2356 struct ptlrpc_request *req = mdt_info_req(info);
2359 opc = lustre_msg_get_opc(req->rq_reqmsg);
2360 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2361 sptlrpc_svc_ctx_invalidate(req);
2364 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2370 * quota request handlers
2372 int mdt_quota_dqacq(struct mdt_thread_info *info)
2374 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
2379 RETURN(err_serious(-EOPNOTSUPP));
2381 rc = qmt_hdls.qmth_dqacq(info->mti_env, qmt, mdt_info_req(info));
2385 static struct mdt_object *mdt_obj(struct lu_object *o)
2387 LASSERT(lu_device_is_mdt(o->lo_dev));
2388 return container_of0(o, struct mdt_object, mot_obj);
2391 struct mdt_object *mdt_object_new(const struct lu_env *env,
2392 struct mdt_device *d,
2393 const struct lu_fid *f)
2395 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2396 struct lu_object *o;
2397 struct mdt_object *m;
2400 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2401 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2402 if (unlikely(IS_ERR(o)))
2403 m = (struct mdt_object *)o;
2409 struct mdt_object *mdt_object_find(const struct lu_env *env,
2410 struct mdt_device *d,
2411 const struct lu_fid *f)
2413 struct lu_object *o;
2414 struct mdt_object *m;
2417 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2418 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2419 if (unlikely(IS_ERR(o)))
2420 m = (struct mdt_object *)o;
2428 * Asyncronous commit for mdt device.
2430 * Pass asynchonous commit call down the MDS stack.
2432 * \param env environment
2433 * \param mdt the mdt device
2435 static void mdt_device_commit_async(const struct lu_env *env,
2436 struct mdt_device *mdt)
2438 struct dt_device *dt = mdt->mdt_bottom;
2441 rc = dt->dd_ops->dt_commit_async(env, dt);
2442 if (unlikely(rc != 0))
2443 CWARN("async commit start failed with rc = %d", rc);
2447 * Mark the lock as "synchonous".
2449 * Mark the lock to deffer transaction commit to the unlock time.
2451 * \param lock the lock to mark as "synchonous"
2453 * \see mdt_is_lock_sync
2454 * \see mdt_save_lock
2456 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2458 lock->l_ast_data = (void*)1;
2462 * Check whehter the lock "synchonous" or not.
2464 * \param lock the lock to check
2465 * \retval 1 the lock is "synchonous"
2466 * \retval 0 the lock isn't "synchronous"
2468 * \see mdt_set_lock_sync
2469 * \see mdt_save_lock
2471 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2473 return lock->l_ast_data != NULL;
2477 * Blocking AST for mdt locks.
2479 * Starts transaction commit if in case of COS lock conflict or
2480 * deffers such a commit to the mdt_save_lock.
2482 * \param lock the lock which blocks a request or cancelling lock
2483 * \param desc unused
2484 * \param data unused
2485 * \param flag indicates whether this cancelling or blocking callback
2487 * \see ldlm_blocking_ast_nocheck
2489 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2490 void *data, int flag)
2492 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2493 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2497 if (flag == LDLM_CB_CANCELING)
2499 lock_res_and_lock(lock);
2500 if (lock->l_blocking_ast != mdt_blocking_ast) {
2501 unlock_res_and_lock(lock);
2504 if (mdt_cos_is_enabled(mdt) &&
2505 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2506 lock->l_blocking_lock != NULL &&
2507 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2508 mdt_set_lock_sync(lock);
2510 rc = ldlm_blocking_ast_nocheck(lock);
2512 /* There is no lock conflict if l_blocking_lock == NULL,
2513 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2514 * when the last reference to a local lock was released */
2515 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2518 rc = lu_env_init(&env, LCT_LOCAL);
2519 if (unlikely(rc != 0))
2520 CWARN("lu_env initialization failed with rc = %d,"
2521 "cannot start asynchronous commit\n", rc);
2523 mdt_device_commit_async(&env, mdt);
2529 int mdt_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2530 void *data, int flag)
2532 struct lustre_handle lockh;
2536 case LDLM_CB_BLOCKING:
2537 ldlm_lock2handle(lock, &lockh);
2538 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2540 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2544 case LDLM_CB_CANCELING:
2545 LDLM_DEBUG(lock, "Revoke remote lock\n");
2553 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2554 struct mdt_object *o, struct lustre_handle *lh,
2555 ldlm_mode_t mode, __u64 ibits)
2557 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2558 ldlm_policy_data_t *policy = &mti->mti_policy;
2562 LASSERT(mdt_object_remote(o));
2564 LASSERT((ibits & MDS_INODELOCK_UPDATE));
2566 memset(einfo, 0, sizeof(*einfo));
2567 einfo->ei_type = LDLM_IBITS;
2568 einfo->ei_mode = mode;
2569 einfo->ei_cb_bl = mdt_md_blocking_ast;
2570 einfo->ei_cb_cp = ldlm_completion_ast;
2572 memset(policy, 0, sizeof(*policy));
2573 policy->l_inodebits.bits = ibits;
2575 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2580 static int mdt_object_lock0(struct mdt_thread_info *info, struct mdt_object *o,
2581 struct mdt_lock_handle *lh, __u64 ibits,
2582 bool nonblock, int locality)
2584 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2585 ldlm_policy_data_t *policy = &info->mti_policy;
2586 struct ldlm_res_id *res_id = &info->mti_res_id;
2591 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2592 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2593 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2594 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2596 if (mdt_object_remote(o)) {
2597 if (locality == MDT_CROSS_LOCK) {
2598 ibits &= ~(MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM);
2599 ibits |= MDS_INODELOCK_LOOKUP;
2602 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM)),
2603 "%s: wrong bit "LPX64" for remote obj "DFID"\n",
2604 mdt_obd_name(info->mti_mdt), ibits,
2605 PFID(mdt_object_fid(o)));
2606 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2608 /* No PDO lock on remote object */
2609 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2612 if (lh->mlh_type == MDT_PDO_LOCK) {
2613 /* check for exists after object is locked */
2614 if (mdt_object_exists(o) == 0) {
2615 /* Non-existent object shouldn't have PDO lock */
2618 /* Non-dir object shouldn't have PDO lock */
2619 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2624 memset(policy, 0, sizeof(*policy));
2625 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2627 dlmflags = LDLM_FL_ATOMIC_CB;
2629 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2632 * Take PDO lock on whole directory and build correct @res_id for lock
2633 * on part of directory.
2635 if (lh->mlh_pdo_hash != 0) {
2636 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2637 mdt_lock_pdo_mode(info, o, lh);
2638 if (lh->mlh_pdo_mode != LCK_NL) {
2640 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2641 * is never going to be sent to client and we do not
2642 * want it slowed down due to possible cancels.
2644 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2645 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2646 policy, res_id, dlmflags,
2647 &info->mti_exp->exp_handle.h_cookie);
2653 * Finish res_id initializing by name hash marking part of
2654 * directory which is taking modification.
2656 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2659 policy->l_inodebits.bits = ibits;
2662 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2663 * going to be sent to client. If it is - mdt_intent_policy() path will
2664 * fix it up and turn FL_LOCAL flag off.
2666 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2667 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2668 &info->mti_exp->exp_handle.h_cookie);
2670 mdt_object_unlock(info, o, lh, 1);
2671 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2672 lh->mlh_pdo_hash != 0 &&
2673 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2674 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2680 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2681 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2683 return mdt_object_lock0(info, o, lh, ibits, false, locality);
2686 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2687 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2689 struct mdt_lock_handle tmp = *lh;
2692 rc = mdt_object_lock0(info, o, &tmp, ibits, true, locality);
2700 * Save a lock within request object.
2702 * Keep the lock referenced until whether client ACK or transaction
2703 * commit happens or release the lock immediately depending on input
2704 * parameters. If COS is ON, a write lock is converted to COS lock
2707 * \param info thead info object
2708 * \param h lock handle
2709 * \param mode lock mode
2710 * \param decref force immediate lock releasing
2713 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2714 ldlm_mode_t mode, int decref)
2718 if (lustre_handle_is_used(h)) {
2719 if (decref || !info->mti_has_trans ||
2720 !(mode & (LCK_PW | LCK_EX))){
2721 mdt_fid_unlock(h, mode);
2723 struct mdt_device *mdt = info->mti_mdt;
2724 struct ldlm_lock *lock = ldlm_handle2lock(h);
2725 struct ptlrpc_request *req = mdt_info_req(info);
2728 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2730 CDEBUG(D_HA, "request = %p reply state = %p"
2731 " transno = "LPD64"\n",
2732 req, req->rq_reply_state, req->rq_transno);
2733 if (mdt_cos_is_enabled(mdt)) {
2735 ldlm_lock_downgrade(lock, LCK_COS);
2738 ptlrpc_save_lock(req, h, mode, no_ack);
2739 if (mdt_is_lock_sync(lock)) {
2740 CDEBUG(D_HA, "found sync-lock,"
2741 " async commit started\n");
2742 mdt_device_commit_async(info->mti_env,
2745 LDLM_LOCK_PUT(lock);
2754 * Unlock mdt object.
2756 * Immeditely release the regular lock and the PDO lock or save the
2757 * lock in reqeuest and keep them referenced until client ACK or
2758 * transaction commit.
2760 * \param info thread info object
2761 * \param o mdt object
2762 * \param lh mdt lock handle referencing regular and PDO locks
2763 * \param decref force immediate lock releasing
2765 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2766 struct mdt_lock_handle *lh, int decref)
2770 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2771 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2773 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2774 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2779 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2780 const struct lu_fid *f,
2781 struct mdt_lock_handle *lh,
2784 struct mdt_object *o;
2786 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2790 rc = mdt_object_lock(info, o, lh, ibits,
2793 mdt_object_put(info->mti_env, o);
2800 void mdt_object_unlock_put(struct mdt_thread_info * info,
2801 struct mdt_object * o,
2802 struct mdt_lock_handle *lh,
2805 mdt_object_unlock(info, o, lh, decref);
2806 mdt_object_put(info->mti_env, o);
2809 struct mdt_handler *mdt_handler_find(__u32 opc, struct mdt_opc_slice *supported)
2811 struct mdt_opc_slice *s;
2812 struct mdt_handler *h;
2815 for (s = supported; s->mos_hs != NULL; s++) {
2816 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2817 h = s->mos_hs + (opc - s->mos_opc_start);
2818 if (likely(h->mh_opc != 0))
2819 LASSERTF(h->mh_opc == opc,
2820 "opcode mismatch %d != %d\n",
2823 h = NULL; /* unsupported opc */
2830 static int mdt_lock_resname_compat(struct mdt_device *m,
2831 struct ldlm_request *req)
2833 /* XXX something... later. */
2837 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2839 /* XXX something... later. */
2844 * Generic code handling requests that have struct mdt_body passed in:
2846 * - extract mdt_body from request and save it in @info, if present;
2848 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2851 * - if HABEO_CORPUS flag is set for this request type check whether object
2852 * actually exists on storage (lu_object_exists()).
2855 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2857 const struct mdt_body *body;
2858 struct mdt_object *obj;
2859 const struct lu_env *env;
2860 struct req_capsule *pill;
2864 env = info->mti_env;
2865 pill = info->mti_pill;
2867 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2871 if (!(body->valid & OBD_MD_FLID))
2874 if (!fid_is_sane(&body->fid1)) {
2875 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2880 * Do not get size or any capa fields before we check that request
2881 * contains capa actually. There are some requests which do not, for
2882 * instance MDS_IS_SUBDIR.
2884 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2885 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2886 mdt_set_capainfo(info, 0, &body->fid1,
2887 req_capsule_client_get(pill, &RMF_CAPA1));
2889 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2891 if ((flags & HABEO_CORPUS) &&
2892 !mdt_object_exists(obj)) {
2893 mdt_object_put(env, obj);
2894 /* for capability renew ENOENT will be handled in
2896 if (body->valid & OBD_MD_FLOSSCAPA)
2901 info->mti_object = obj;
2910 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2912 struct req_capsule *pill = info->mti_pill;
2916 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2917 rc = mdt_body_unpack(info, flags);
2921 if (rc == 0 && (flags & HABEO_REFERO)) {
2923 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2924 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2925 info->mti_body->eadatasize);
2926 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2927 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2930 rc = req_capsule_server_pack(pill);
2935 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2937 struct md_device *next = m->mdt_child;
2939 return next->md_ops->mdo_init_capa_ctxt(env, next,
2940 m->mdt_opts.mo_mds_capa,
2941 m->mdt_capa_timeout,
2947 * Invoke handler for this request opc. Also do necessary preprocessing
2948 * (according to handler ->mh_flags), and post-processing (setting of
2949 * ->last_{xid,committed}).
2951 static int mdt_req_handle(struct mdt_thread_info *info,
2952 struct mdt_handler *h, struct ptlrpc_request *req)
2954 int rc, serious = 0;
2959 LASSERT(h->mh_act != NULL);
2960 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2961 LASSERT(current->journal_info == NULL);
2964 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2965 * to put same checks into handlers like mdt_close(), mdt_reint(),
2966 * etc., without talking to mdt authors first. Checking same thing
2967 * there again is useless and returning 0 error without packing reply
2968 * is buggy! Handlers either pack reply or return error.
2970 * We return 0 here and do not send any reply in order to emulate
2971 * network failure. Do not send any reply in case any of NET related
2972 * fail_id has occured.
2974 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2978 flags = h->mh_flags;
2979 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2981 if (h->mh_fmt != NULL) {
2982 req_capsule_set(info->mti_pill, h->mh_fmt);
2983 rc = mdt_unpack_req_pack_rep(info, flags);
2986 if (rc == 0 && flags & MUTABOR &&
2987 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
2988 /* should it be rq_status? */
2991 if (rc == 0 && flags & HABEO_CLAVIS) {
2992 struct ldlm_request *dlm_req;
2994 LASSERT(h->mh_fmt != NULL);
2996 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2997 if (dlm_req != NULL) {
2998 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
3000 dlm_req->lock_desc.l_policy_data.\
3001 l_inodebits.bits == 0)) {
3003 * Lock without inodebits makes no sense and
3004 * will oops later in ldlm. If client miss to
3005 * set such bits, do not trigger ASSERTION.
3007 * For liblustre flock case, it maybe zero.
3011 if (info->mti_mdt->mdt_opts.mo_compat_resname)
3012 rc = mdt_lock_resname_compat(
3015 info->mti_dlm_req = dlm_req;
3022 /* capability setting changed via /proc, needs reinitialize ctxt */
3023 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
3024 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
3025 info->mti_mdt->mdt_capa_conf = 0;
3028 if (likely(rc == 0)) {
3030 * Process request, there can be two types of rc:
3031 * 1) errors with msg unpack/pack, other failures outside the
3032 * operation itself. This is counted as serious errors;
3033 * 2) errors during fs operation, should be placed in rq_status
3036 rc = h->mh_act(info);
3038 !req->rq_no_reply && req->rq_reply_state == NULL) {
3039 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
3040 "pack reply and returned 0 error\n",
3044 serious = is_serious(rc);
3045 rc = clear_serious(rc);
3049 req->rq_status = rc;
3052 * ELDLM_* codes which > 0 should be in rq_status only as well as
3053 * all non-serious errors.
3055 if (rc > 0 || !serious)
3058 LASSERT(current->journal_info == NULL);
3060 if (rc == 0 && (flags & HABEO_CLAVIS) &&
3061 info->mti_mdt->mdt_opts.mo_compat_resname) {
3062 struct ldlm_reply *dlmrep;
3064 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3066 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
3069 /* If we're DISCONNECTing, the mdt_export_data is already freed */
3070 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
3071 target_committed_to_req(req);
3073 if (unlikely(req_is_replay(req) &&
3074 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
3075 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
3079 target_send_reply(req, rc, info->mti_fail_id);
3083 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3085 lh->mlh_type = MDT_NUL_LOCK;
3086 lh->mlh_reg_lh.cookie = 0ull;
3087 lh->mlh_reg_mode = LCK_MINMODE;
3088 lh->mlh_pdo_lh.cookie = 0ull;
3089 lh->mlh_pdo_mode = LCK_MINMODE;
3090 lh->mlh_rreg_lh.cookie = 0ull;
3091 lh->mlh_rreg_mode = LCK_MINMODE;
3094 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3096 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3097 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3101 * Initialize fields of struct mdt_thread_info. Other fields are left in
3102 * uninitialized state, because it's too expensive to zero out whole
3103 * mdt_thread_info (> 1K) on each request arrival.
3105 void mdt_thread_info_init(struct ptlrpc_request *req,
3106 struct mdt_thread_info *info)
3110 info->mti_pill = &req->rq_pill;
3113 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3114 mdt_lock_handle_init(&info->mti_lh[i]);
3116 /* mdt device: it can be NULL while CONNECT */
3117 if (req->rq_export) {
3118 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3119 info->mti_exp = req->rq_export;
3121 info->mti_mdt = NULL;
3122 info->mti_env = req->rq_svc_thread->t_env;
3123 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
3124 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3125 info->mti_mos = NULL;
3127 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3128 info->mti_big_buf = LU_BUF_NULL;
3129 info->mti_body = NULL;
3130 info->mti_object = NULL;
3131 info->mti_dlm_req = NULL;
3132 info->mti_has_trans = 0;
3133 info->mti_cross_ref = 0;
3134 info->mti_opdata = 0;
3135 info->mti_big_lmm_used = 0;
3137 /* To not check for split by default. */
3138 info->mti_spec.no_create = 0;
3139 info->mti_spec.sp_rm_entry = 0;
3142 void mdt_thread_info_fini(struct mdt_thread_info *info)
3146 if (info->mti_object != NULL) {
3147 mdt_object_put(info->mti_env, info->mti_object);
3148 info->mti_object = NULL;
3151 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3152 mdt_lock_handle_fini(&info->mti_lh[i]);
3153 info->mti_env = NULL;
3154 info->mti_pill = NULL;
3155 info->mti_exp = NULL;
3157 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3158 lu_buf_free(&info->mti_big_buf);
3161 int mdt_tgt_connect(struct tgt_session_info *tsi)
3163 struct ptlrpc_request *req = tgt_ses_req(tsi);
3164 struct mdt_thread_info *mti;
3169 rc = tgt_connect(tsi);
3173 /* XXX: switch mdt_init_idmap() to use tgt_session_info */
3174 lu_env_refill((void *)tsi->tsi_env);
3175 mti = lu_context_key_get(&tsi->tsi_env->le_ctx, &mdt_thread_key);
3176 LASSERT(mti != NULL);
3178 mdt_thread_info_init(req, mti);
3179 rc = mdt_init_idmap(mti);
3180 mdt_thread_info_fini(mti);
3185 obd_disconnect(class_export_get(req->rq_export));
3189 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
3190 struct obd_device *obd, int *process)
3192 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3193 case MDS_CONNECT: /* This will never get here, but for completeness. */
3194 case OST_CONNECT: /* This will never get here, but for completeness. */
3195 case MDS_DISCONNECT:
3196 case OST_DISCONNECT:
3202 case MDS_DONE_WRITING:
3203 case MDS_SYNC: /* used in unmounting */
3210 *process = target_queue_recovery_request(req, obd);
3214 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
3221 * Handle recovery. Return:
3222 * +1: continue request processing;
3223 * -ve: abort immediately with the given error code;
3224 * 0: send reply with error code in req->rq_status;
3226 static int mdt_recovery(struct mdt_thread_info *info)
3228 struct ptlrpc_request *req = mdt_info_req(info);
3229 struct obd_device *obd;
3233 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3236 case SEC_CTX_INIT_CONT:
3242 rc = mdt_handle_idmap(info);
3251 if (unlikely(!class_connected_export(req->rq_export))) {
3252 CDEBUG(D_HA, "operation %d on unconnected MDS from %s\n",
3253 lustre_msg_get_opc(req->rq_reqmsg),
3254 libcfs_id2str(req->rq_peer));
3255 /* FIXME: For CMD cleanup, when mds_B stop, the req from
3256 * mds_A will get -ENOTCONN(especially for ping req),
3257 * which will cause that mds_A deactive timeout, then when
3258 * mds_A cleanup, the cleanup process will be suspended since
3259 * deactive timeout is not zero.
3261 req->rq_status = -ENOTCONN;
3262 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
3266 /* sanity check: if the xid matches, the request must be marked as a
3267 * resent or replayed */
3268 if (req_xid_is_last(req)) {
3269 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
3270 (MSG_RESENT | MSG_REPLAY))) {
3271 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
3272 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
3273 lustre_msg_get_flags(req->rq_reqmsg));
3275 req->rq_status = -ENOTCONN;
3280 /* else: note the opposite is not always true; a RESENT req after a
3281 * failover will usually not match the last_xid, since it was likely
3282 * never committed. A REPLAYed request will almost never match the
3283 * last xid, however it could for a committed, but still retained,
3286 obd = req->rq_export->exp_obd;
3288 /* Check for aborted recovery... */
3289 if (unlikely(obd->obd_recovering)) {
3292 DEBUG_REQ(D_INFO, req, "Got new replay");
3293 rc = mdt_filter_recovery_request(req, obd, &should_process);
3294 if (rc != 0 || !should_process)
3296 else if (should_process < 0) {
3297 req->rq_status = should_process;
3298 rc = ptlrpc_error(req);
3305 static int mdt_msg_check_version(struct lustre_msg *msg)
3309 switch (lustre_msg_get_opc(msg)) {
3311 case MDS_DISCONNECT:
3314 case SEC_CTX_INIT_CONT:
3317 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
3319 CERROR("bad opc %u version %08x, expecting %08x\n",
3320 lustre_msg_get_opc(msg),
3321 lustre_msg_get_version(msg),
3322 LUSTRE_OBD_VERSION);
3326 case MDS_GETATTR_NAME:
3333 case MDS_DONE_WRITING:
3340 case MDS_HSM_PROGRESS:
3341 case MDS_HSM_REQUEST:
3342 case MDS_HSM_CT_REGISTER:
3343 case MDS_HSM_CT_UNREGISTER:
3344 case MDS_HSM_STATE_GET:
3345 case MDS_HSM_STATE_SET:
3346 case MDS_HSM_ACTION:
3347 case MDS_QUOTACHECK:
3350 case MDS_SWAP_LAYOUTS:
3355 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
3357 CERROR("bad opc %u version %08x, expecting %08x\n",
3358 lustre_msg_get_opc(msg),
3359 lustre_msg_get_version(msg),
3360 LUSTRE_MDS_VERSION);
3364 case LDLM_BL_CALLBACK:
3365 case LDLM_CP_CALLBACK:
3366 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
3368 CERROR("bad opc %u version %08x, expecting %08x\n",
3369 lustre_msg_get_opc(msg),
3370 lustre_msg_get_version(msg),
3371 LUSTRE_DLM_VERSION);
3373 case OBD_LOG_CANCEL:
3374 case LLOG_ORIGIN_HANDLE_CREATE:
3375 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
3376 case LLOG_ORIGIN_HANDLE_READ_HEADER:
3377 case LLOG_ORIGIN_HANDLE_CLOSE:
3378 case LLOG_ORIGIN_HANDLE_DESTROY:
3379 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
3381 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
3383 CERROR("bad opc %u version %08x, expecting %08x\n",
3384 lustre_msg_get_opc(msg),
3385 lustre_msg_get_version(msg),
3386 LUSTRE_LOG_VERSION);
3389 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
3395 static int mdt_handle0(struct ptlrpc_request *req,
3396 struct mdt_thread_info *info,
3397 struct mdt_opc_slice *supported)
3399 struct mdt_handler *h;
3400 struct lustre_msg *msg;
3405 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
3408 LASSERT(current->journal_info == NULL);
3410 msg = req->rq_reqmsg;
3411 rc = mdt_msg_check_version(msg);
3412 if (likely(rc == 0)) {
3413 rc = mdt_recovery(info);
3414 if (likely(rc == +1)) {
3415 h = mdt_handler_find(lustre_msg_get_opc(msg),
3417 if (likely(h != NULL)) {
3418 rc = mdt_req_handle(info, h, req);
3420 CERROR("%s: opc unsupported: 0x%x\n",
3421 mdt_obd_name(info->mti_mdt),
3422 lustre_msg_get_opc(msg));
3423 req->rq_status = -ENOTSUPP;
3424 rc = ptlrpc_error(req);
3429 CDEBUG(D_INFO, "%s: drops mal-formed request: rc = %d\n",
3430 mdt_obd_name(info->mti_mdt), rc);
3431 req->rq_status = rc;
3432 rc = ptlrpc_error(req);
3438 * MDT handler function called by ptlrpc service thread when request comes.
3440 * XXX common "target" functionality should be factored into separate module
3441 * shared by mdt, ost and stand-alone services like fld.
3443 int mdt_handle_common(struct ptlrpc_request *req,
3444 struct mdt_opc_slice *supported)
3447 struct mdt_thread_info *info;
3451 env = req->rq_svc_thread->t_env;
3452 /* Refill(initilize) the context(mdt_thread_info), in case it is
3453 * not initialized yet. Usually it happens during start up, after
3454 * MDS(ptlrpc threads) is start up, it gets the first CONNECT request,
3455 * before MDT_thread_info is initialized */
3457 LASSERT(env != NULL);
3458 LASSERT(env->le_ses != NULL);
3459 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
3460 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3461 LASSERT(info != NULL);
3463 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
3464 mdt_thread_info_init(req, info);
3466 rc = mdt_handle0(req, info, supported);
3468 mdt_thread_info_fini(info);
3469 req_capsule_fini(&req->rq_pill);
3474 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3477 int mdt_recovery_handle(struct ptlrpc_request *req)
3483 rc = mdt_handle_common(req, mdt_regular_handlers);
3503 static int mdt_intent_getattr(enum mdt_it_code opcode,
3504 struct mdt_thread_info *info,
3505 struct ldlm_lock **,
3508 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3509 struct mdt_thread_info *info,
3510 struct ldlm_lock **lockp,
3513 static int mdt_intent_layout(enum mdt_it_code opcode,
3514 struct mdt_thread_info *info,
3515 struct ldlm_lock **,
3517 static int mdt_intent_reint(enum mdt_it_code opcode,
3518 struct mdt_thread_info *info,
3519 struct ldlm_lock **,
3522 static struct mdt_it_flavor {
3523 const struct req_format *it_fmt;
3525 int (*it_act)(enum mdt_it_code ,
3526 struct mdt_thread_info *,
3527 struct ldlm_lock **,
3530 } mdt_it_flavor[] = {
3532 .it_fmt = &RQF_LDLM_INTENT,
3533 /*.it_flags = HABEO_REFERO,*/
3535 .it_act = mdt_intent_reint,
3536 .it_reint = REINT_OPEN
3539 .it_fmt = &RQF_LDLM_INTENT,
3540 .it_flags = MUTABOR,
3541 .it_act = mdt_intent_reint,
3542 .it_reint = REINT_OPEN
3545 .it_fmt = &RQF_LDLM_INTENT,
3546 .it_flags = MUTABOR,
3547 .it_act = mdt_intent_reint,
3548 .it_reint = REINT_CREATE
3550 [MDT_IT_GETATTR] = {
3551 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3552 .it_flags = HABEO_REFERO,
3553 .it_act = mdt_intent_getattr
3555 [MDT_IT_READDIR] = {
3561 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3562 .it_flags = HABEO_REFERO,
3563 .it_act = mdt_intent_getattr
3566 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3567 .it_flags = MUTABOR,
3569 .it_reint = REINT_UNLINK
3573 .it_flags = MUTABOR,
3576 [MDT_IT_GETXATTR] = {
3577 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3578 .it_flags = HABEO_CORPUS,
3579 .it_act = mdt_intent_getxattr
3582 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3584 .it_act = mdt_intent_layout
3588 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3589 struct ldlm_lock **lockp,
3590 struct ldlm_lock *new_lock,
3591 struct mdt_lock_handle *lh,
3594 struct ptlrpc_request *req = mdt_info_req(info);
3595 struct ldlm_lock *lock = *lockp;
3598 * Get new lock only for cases when possible resent did not find any
3601 if (new_lock == NULL)
3602 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3604 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3605 lh->mlh_reg_lh.cookie = 0;
3609 LASSERTF(new_lock != NULL,
3610 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3613 * If we've already given this lock to a client once, then we should
3614 * have no readers or writers. Otherwise, we should have one reader
3615 * _or_ writer ref (which will be zeroed below) before returning the
3618 if (new_lock->l_export == req->rq_export) {
3619 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3621 LASSERT(new_lock->l_export == NULL);
3622 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3627 if (new_lock->l_export == req->rq_export) {
3629 * Already gave this to the client, which means that we
3630 * reconstructed a reply.
3632 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3634 lh->mlh_reg_lh.cookie = 0;
3635 RETURN(ELDLM_LOCK_REPLACED);
3639 * Fixup the lock to be given to the client.
3641 lock_res_and_lock(new_lock);
3642 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3643 * possible blocking AST. */
3644 while (new_lock->l_readers > 0) {
3645 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3646 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3647 new_lock->l_readers--;
3649 while (new_lock->l_writers > 0) {
3650 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3651 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3652 new_lock->l_writers--;
3655 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3656 new_lock->l_blocking_ast = lock->l_blocking_ast;
3657 new_lock->l_completion_ast = lock->l_completion_ast;
3658 new_lock->l_remote_handle = lock->l_remote_handle;
3659 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3661 unlock_res_and_lock(new_lock);
3663 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3664 &new_lock->l_remote_handle,
3665 &new_lock->l_exp_hash);
3667 LDLM_LOCK_RELEASE(new_lock);
3668 lh->mlh_reg_lh.cookie = 0;
3670 RETURN(ELDLM_LOCK_REPLACED);
3673 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3674 struct ldlm_lock *new_lock,
3675 struct ldlm_lock **old_lock,
3676 struct mdt_lock_handle *lh)
3678 struct ptlrpc_request *req = mdt_info_req(info);
3679 struct obd_export *exp = req->rq_export;
3680 struct lustre_handle remote_hdl;
3681 struct ldlm_request *dlmreq;
3682 struct ldlm_lock *lock;
3684 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3687 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3688 remote_hdl = dlmreq->lock_handle[0];
3690 /* In the function below, .hs_keycmp resolves to
3691 * ldlm_export_lock_keycmp() */
3692 /* coverity[overrun-buffer-val] */
3693 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3695 if (lock != new_lock) {
3696 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3697 lh->mlh_reg_mode = lock->l_granted_mode;
3699 LDLM_DEBUG(lock, "Restoring lock cookie");
3700 DEBUG_REQ(D_DLMTRACE, req,
3701 "restoring lock cookie "LPX64,
3702 lh->mlh_reg_lh.cookie);
3704 *old_lock = LDLM_LOCK_GET(lock);
3705 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3709 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3713 * If the xid matches, then we know this is a resent request, and allow
3714 * it. (It's probably an OPEN, for which we don't send a lock.
3716 if (req_xid_is_last(req))
3720 * This remote handle isn't enqueued, so we never received or processed
3721 * this request. Clear MSG_RESENT, because it can be handled like any
3722 * normal request now.
3724 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3726 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3730 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3731 struct mdt_thread_info *info,
3732 struct ldlm_lock **lockp,
3735 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3736 struct ldlm_reply *ldlm_rep = NULL;
3740 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3741 * (for the resend case) or a new lock. Below we will use it to
3742 * replace the original lock.
3744 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3745 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3746 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3747 rc = mdt_object_lock(info, info->mti_object, lhc,
3748 MDS_INODELOCK_XATTR,
3754 grc = mdt_getxattr(info);
3756 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3758 if (mdt_info_req(info)->rq_repmsg != NULL)
3759 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3760 if (ldlm_rep == NULL)
3761 RETURN(err_serious(-EFAULT));
3763 ldlm_rep->lock_policy_res2 = grc;
3768 static int mdt_intent_getattr(enum mdt_it_code opcode,
3769 struct mdt_thread_info *info,
3770 struct ldlm_lock **lockp,
3773 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3774 struct ldlm_lock *new_lock = NULL;
3776 struct ldlm_reply *ldlm_rep;
3777 struct ptlrpc_request *req;
3778 struct mdt_body *reqbody;
3779 struct mdt_body *repbody;
3783 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3786 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3789 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3790 repbody->eadatasize = 0;
3791 repbody->aclsize = 0;
3795 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3797 case MDT_IT_GETATTR:
3798 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3802 CERROR("Unsupported intent (%d)\n", opcode);
3803 GOTO(out_shrink, rc = -EINVAL);
3806 rc = mdt_init_ucred(info, reqbody);
3808 GOTO(out_shrink, rc);
3810 req = info->mti_pill->rc_req;
3811 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3812 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3814 /* Get lock from request for possible resent case. */
3815 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3817 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3818 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3820 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3821 ldlm_rep->lock_policy_res2 = 0;
3822 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3823 ldlm_rep->lock_policy_res2) {
3824 lhc->mlh_reg_lh.cookie = 0ull;
3825 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3828 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3831 mdt_exit_ucred(info);
3833 mdt_client_compatibility(info);
3834 rc2 = mdt_fix_reply(info);
3840 static int mdt_intent_layout(enum mdt_it_code opcode,
3841 struct mdt_thread_info *info,
3842 struct ldlm_lock **lockp,
3845 struct layout_intent *layout;
3847 struct mdt_object *obj = NULL;
3848 struct md_object *child = NULL;
3852 if (opcode != MDT_IT_LAYOUT) {
3853 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3858 fid = &info->mti_tmp_fid2;
3859 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3861 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3863 RETURN(PTR_ERR(obj));
3865 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3866 child = mdt_object_child(obj);
3868 /* get the length of lsm */
3869 rc = mo_xattr_get(info->mti_env, child, &LU_BUF_NULL,
3872 if (rc > info->mti_mdt->mdt_max_mdsize)
3873 info->mti_mdt->mdt_max_mdsize = rc;
3876 mdt_object_put(info->mti_env, obj);
3878 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3879 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3880 ldlm_lvbo_size(*lockp));
3881 rc = req_capsule_server_pack(info->mti_pill);
3885 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3886 LASSERT(layout != NULL);
3887 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3888 /* return to normal ldlm handling */
3891 CERROR("%s: Unsupported layout intent (%d)\n",
3892 mdt_obd_name(info->mti_mdt), layout->li_opc);
3896 static int mdt_intent_reint(enum mdt_it_code opcode,
3897 struct mdt_thread_info *info,
3898 struct ldlm_lock **lockp,
3901 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3902 struct ldlm_reply *rep = NULL;
3906 static const struct req_format *intent_fmts[REINT_MAX] = {
3907 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3908 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3913 opc = mdt_reint_opcode(info, intent_fmts);
3917 if (mdt_it_flavor[opcode].it_reint != opc) {
3918 CERROR("Reint code %ld doesn't match intent: %d\n",
3920 RETURN(err_serious(-EPROTO));
3923 /* Get lock from request for possible resent case. */
3924 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3926 rc = mdt_reint_internal(info, lhc, opc);
3928 /* Check whether the reply has been packed successfully. */
3929 if (mdt_info_req(info)->rq_repmsg != NULL)
3930 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3932 RETURN(err_serious(-EFAULT));
3934 /* MDC expects this in any case */
3936 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3938 /* the open lock or the lock for cross-ref object should be
3939 * returned to the client */
3940 if (rc == -EREMOTE || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3941 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3942 rep->lock_policy_res2 = 0;
3943 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3947 rep->lock_policy_res2 = clear_serious(rc);
3949 if (rep->lock_policy_res2 == -ENOENT &&
3950 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3951 rep->lock_policy_res2 = 0;
3953 if (rc == -ENOTCONN || rc == -ENODEV ||
3954 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3956 * If it is the disconnect error (ENODEV & ENOCONN), the error
3957 * will be returned by rq_status, and client at ptlrpc layer
3958 * will detect this, then disconnect, reconnect the import
3959 * immediately, instead of impacting the following the rpc.
3961 lhc->mlh_reg_lh.cookie = 0ull;
3965 * For other cases, the error will be returned by intent.
3966 * and client will retrieve the result from intent.
3969 * FIXME: when open lock is finished, that should be
3972 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3973 LASSERTF(rc == 0, "Error occurred but lock handle "
3974 "is still in use, rc = %d\n", rc);
3975 rep->lock_policy_res2 = 0;
3976 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3979 lhc->mlh_reg_lh.cookie = 0ull;
3980 RETURN(ELDLM_LOCK_ABORTED);
3985 static int mdt_intent_code(long itcode)
3993 case IT_OPEN|IT_CREAT:
4000 rc = MDT_IT_READDIR;
4003 rc = MDT_IT_GETATTR;
4015 rc = MDT_IT_GETXATTR;
4020 case IT_QUOTA_DQACQ:
4025 CERROR("Unknown intent opcode: %ld\n", itcode);
4032 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
4033 struct ldlm_lock **lockp, __u64 flags)
4035 struct req_capsule *pill;
4036 struct mdt_it_flavor *flv;
4041 opc = mdt_intent_code(itopc);
4045 pill = info->mti_pill;
4047 if (opc == MDT_IT_QUOTA) {
4048 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4051 RETURN(-EOPNOTSUPP);
4053 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4054 /* pass the request to quota master */
4055 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4056 mdt_info_req(info), lockp,
4061 flv = &mdt_it_flavor[opc];
4062 if (flv->it_fmt != NULL)
4063 req_capsule_extend(pill, flv->it_fmt);
4065 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
4067 struct ptlrpc_request *req = mdt_info_req(info);
4068 if (flv->it_flags & MUTABOR &&
4069 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
4072 if (rc == 0 && flv->it_act != NULL) {
4073 struct ldlm_reply *rep;
4075 /* execute policy */
4076 rc = flv->it_act(opc, info, lockp, flags);
4078 /* Check whether the reply has been packed successfully. */
4079 if (mdt_info_req(info)->rq_repmsg != NULL) {
4080 rep = req_capsule_server_get(info->mti_pill,
4082 rep->lock_policy_res2 =
4083 ptlrpc_status_hton(rep->lock_policy_res2);
4091 static int mdt_intent_policy(struct ldlm_namespace *ns,
4092 struct ldlm_lock **lockp, void *req_cookie,
4093 ldlm_mode_t mode, __u64 flags, void *data)
4095 struct mdt_thread_info *info;
4096 struct ptlrpc_request *req = req_cookie;
4097 struct ldlm_intent *it;
4098 struct req_capsule *pill;
4103 LASSERT(req != NULL);
4105 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
4107 LASSERT(info != NULL);
4108 pill = info->mti_pill;
4109 LASSERT(pill->rc_req == req);
4111 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4112 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4113 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4115 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4119 /* Lock without inodebits makes no sense and will oops
4120 * later in ldlm. Let's check it now to see if we have
4121 * ibits corrupted somewhere in mdt_intent_opc().
4122 * The case for client miss to set ibits has been
4123 * processed by others. */
4124 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
4125 lr_type == LDLM_IBITS,
4126 info->mti_dlm_req->lock_desc.\
4127 l_policy_data.l_inodebits.bits != 0));
4129 rc = err_serious(-EFAULT);
4131 /* No intent was provided */
4132 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
4133 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4134 rc = req_capsule_server_pack(pill);
4136 rc = err_serious(rc);
4141 static int mdt_seq_fini(const struct lu_env *env,
4142 struct mdt_device *m)
4144 return seq_site_fini(env, mdt_seq_site(m));
4147 static int mdt_seq_init(const struct lu_env *env,
4149 struct mdt_device *m)
4151 struct seq_server_site *ss;
4156 ss = mdt_seq_site(m);
4159 * This is sequence-controller node. Init seq-controller server on local
4162 if (ss->ss_node_id == 0) {
4163 LASSERT(ss->ss_control_seq == NULL);
4165 OBD_ALLOC_PTR(ss->ss_control_seq);
4166 if (ss->ss_control_seq == NULL)
4169 rc = seq_server_init(ss->ss_control_seq,
4170 m->mdt_bottom, uuid,
4171 LUSTRE_SEQ_CONTROLLER,
4176 GOTO(out_seq_fini, rc);
4178 OBD_ALLOC_PTR(ss->ss_client_seq);
4179 if (ss->ss_client_seq == NULL)
4180 GOTO(out_seq_fini, rc = -ENOMEM);
4182 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4183 if (prefix == NULL) {
4184 OBD_FREE_PTR(ss->ss_client_seq);
4185 GOTO(out_seq_fini, rc = -ENOMEM);
4188 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
4192 * Init seq-controller client after seq-controller server is
4193 * ready. Pass ss->ss_control_seq to it for direct talking.
4195 rc = seq_client_init(ss->ss_client_seq, NULL,
4196 LUSTRE_SEQ_METADATA, prefix,
4197 ss->ss_control_seq);
4198 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4201 GOTO(out_seq_fini, rc);
4204 /* Init seq-server on local MDT */
4205 LASSERT(ss->ss_server_seq == NULL);
4207 OBD_ALLOC_PTR(ss->ss_server_seq);
4208 if (ss->ss_server_seq == NULL)
4209 GOTO(out_seq_fini, rc = -ENOMEM);
4211 rc = seq_server_init(ss->ss_server_seq,
4212 m->mdt_bottom, uuid,
4217 GOTO(out_seq_fini, rc = -ENOMEM);
4219 /* Assign seq-controller client to local seq-server. */
4220 if (ss->ss_node_id == 0) {
4221 LASSERT(ss->ss_client_seq != NULL);
4223 rc = seq_server_set_cli(ss->ss_server_seq,
4231 mdt_seq_fini(env, m);
4239 static int mdt_fld_fini(const struct lu_env *env,
4240 struct mdt_device *m)
4242 struct seq_server_site *ss = mdt_seq_site(m);
4245 if (ss && ss->ss_server_fld) {
4246 fld_server_fini(env, ss->ss_server_fld);
4247 OBD_FREE_PTR(ss->ss_server_fld);
4248 ss->ss_server_fld = NULL;
4254 static int mdt_fld_init(const struct lu_env *env,
4256 struct mdt_device *m)
4258 struct seq_server_site *ss;
4262 ss = mdt_seq_site(m);
4264 OBD_ALLOC_PTR(ss->ss_server_fld);
4265 if (ss->ss_server_fld == NULL)
4266 RETURN(rc = -ENOMEM);
4268 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4269 ss->ss_node_id, LU_SEQ_RANGE_MDT);
4271 OBD_FREE_PTR(ss->ss_server_fld);
4272 ss->ss_server_fld = NULL;
4279 static void mdt_stack_pre_fini(const struct lu_env *env,
4280 struct mdt_device *m, struct lu_device *top)
4282 struct obd_device *obd;
4283 struct lustre_cfg_bufs *bufs;
4284 struct lustre_cfg *lcfg;
4285 struct mdt_thread_info *info;
4290 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4291 LASSERT(info != NULL);
4293 bufs = &info->mti_u.bufs;
4295 LASSERT(m->mdt_child_exp);
4296 LASSERT(m->mdt_child_exp->exp_obd);
4297 obd = m->mdt_child_exp->exp_obd;
4299 /* process cleanup, pass mdt obd name to get obd umount flags */
4300 /* XXX: this is needed because all layers are referenced by
4301 * objects (some of them are pinned by osd, for example *
4302 * the proper solution should be a model where object used
4303 * by osd only doesn't have mdt/mdd slices -bzzz */
4304 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4305 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4306 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
4308 CERROR("%s:Cannot alloc lcfg!\n", mdt_obd_name(m));
4311 top->ld_ops->ldo_process_config(env, top, lcfg);
4312 lustre_cfg_free(lcfg);
4316 static void mdt_stack_fini(const struct lu_env *env,
4317 struct mdt_device *m, struct lu_device *top)
4319 struct obd_device *obd = mdt2obd_dev(m);
4320 struct lustre_cfg_bufs *bufs;
4321 struct lustre_cfg *lcfg;
4322 struct mdt_thread_info *info;
4326 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4327 LASSERT(info != NULL);
4329 lu_dev_del_linkage(top->ld_site, top);
4331 lu_site_purge(env, top->ld_site, -1);
4333 bufs = &info->mti_u.bufs;
4334 /* process cleanup, pass mdt obd name to get obd umount flags */
4335 /* another purpose is to let all layers to release their objects */
4336 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4341 lustre_cfg_bufs_set_string(bufs, 1, flags);
4342 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4344 CERROR("Cannot alloc lcfg!\n");
4348 top->ld_ops->ldo_process_config(env, top, lcfg);
4349 lustre_cfg_free(lcfg);
4351 lu_site_purge(env, top->ld_site, -1);
4353 m->mdt_child = NULL;
4354 m->mdt_bottom = NULL;
4356 obd_disconnect(m->mdt_child_exp);
4357 m->mdt_child_exp = NULL;
4359 obd_disconnect(m->mdt_bottom_exp);
4360 m->mdt_child_exp = NULL;
4363 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4364 const char *next, struct obd_export **exp)
4366 struct obd_connect_data *data = NULL;
4367 struct obd_device *obd;
4371 OBD_ALLOC_PTR(data);
4373 GOTO(out, rc = -ENOMEM);
4375 obd = class_name2obd(next);
4377 CERROR("%s: can't locate next device: %s\n",
4378 mdt_obd_name(m), next);
4379 GOTO(out, rc = -ENOTCONN);
4382 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4383 data->ocd_version = LUSTRE_VERSION_CODE;
4385 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4387 CERROR("%s: cannot connect to next dev %s (%d)\n",
4388 mdt_obd_name(m), next, rc);
4398 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4399 struct lustre_cfg *cfg)
4401 char *dev = lustre_cfg_string(cfg, 0);
4402 int rc, name_size, uuid_size;
4403 char *name, *uuid, *p;
4404 struct lustre_cfg_bufs *bufs;
4405 struct lustre_cfg *lcfg;
4406 struct obd_device *obd;
4407 struct lustre_profile *lprof;
4408 struct lu_site *site;
4411 /* in 1.8 we had the only device in the stack - MDS.
4412 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4413 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4414 * to generate names and setup MDT, MDD. MDT will be using
4415 * generated name to connect to MDD. for MDD the next device
4416 * will be LOD with name taken from so called "profile" which
4417 * is generated by mount_option line
4419 * 1.8 MGS generates config. commands like this:
4420 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4421 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4422 * 2.0 MGS generates config. commands like this:
4423 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4424 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4425 * 3:lustre-MDT0000-mdtlov 4:f
4427 * we generate MDD name from MDT one, just replacing T with D
4429 * after all the preparations, the logical equivalent will be
4430 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4431 * 3:lustre-MDT0000-mdtlov 4:f
4432 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4433 * 3:lustre-MDD0000 4:f
4435 * notice we build the stack from down to top: MDD first, then MDT */
4437 name_size = MAX_OBD_NAME;
4438 uuid_size = MAX_OBD_NAME;
4440 OBD_ALLOC(name, name_size);
4441 OBD_ALLOC(uuid, uuid_size);
4442 if (name == NULL || uuid == NULL)
4443 GOTO(cleanup_mem, rc = -ENOMEM);
4445 OBD_ALLOC_PTR(bufs);
4447 GOTO(cleanup_mem, rc = -ENOMEM);
4450 p = strstr(name, "-MDT");
4452 GOTO(cleanup_mem, rc = -ENOMEM);
4455 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4457 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4458 if (lprof == NULL || lprof->lp_dt == NULL) {
4459 CERROR("can't find the profile: %s\n",
4460 lustre_cfg_string(cfg, 0));
4461 GOTO(cleanup_mem, rc = -EINVAL);
4464 lustre_cfg_bufs_reset(bufs, name);
4465 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4466 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4467 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4469 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4471 GOTO(free_bufs, rc = -ENOMEM);
4473 rc = class_attach(lcfg);
4475 GOTO(lcfg_cleanup, rc);
4477 obd = class_name2obd(name);
4479 CERROR("Can not find obd %s (%s in config)\n",
4480 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4481 GOTO(class_detach, rc = -EINVAL);
4484 lustre_cfg_free(lcfg);
4486 lustre_cfg_bufs_reset(bufs, name);
4487 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4488 lustre_cfg_bufs_set_string(bufs, 2, dev);
4489 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4491 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4493 rc = class_setup(obd, lcfg);
4495 GOTO(class_detach, rc);
4497 /* connect to MDD we just setup */
4498 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4502 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4504 LASSERT(mdt_lu_site(mdt) == NULL);
4505 mdt->mdt_lu_dev.ld_site = site;
4506 site->ls_top_dev = &mdt->mdt_lu_dev;
4507 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4510 /* now connect to bottom OSD */
4511 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4512 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4516 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4519 rc = lu_env_refill((struct lu_env *)env);
4521 CERROR("Failure to refill session: '%d'\n", rc);
4523 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4528 class_detach(obd, lcfg);
4530 lustre_cfg_free(lcfg);
4535 OBD_FREE(name, name_size);
4537 OBD_FREE(uuid, uuid_size);
4541 /* setup quota master target on MDT0 */
4542 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4543 struct lustre_cfg *cfg)
4545 struct obd_device *obd;
4546 char *dev = lustre_cfg_string(cfg, 0);
4547 char *qmtname, *uuid, *p;
4548 struct lustre_cfg_bufs *bufs;
4549 struct lustre_cfg *lcfg;
4550 struct lustre_profile *lprof;
4551 struct obd_connect_data *data;
4555 LASSERT(mdt->mdt_qmt_exp == NULL);
4556 LASSERT(mdt->mdt_qmt_dev == NULL);
4558 /* quota master is on MDT0 only for now */
4559 if (mdt->mdt_seq_site.ss_node_id != 0)
4562 /* MGS generates config commands which look as follows:
4563 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4564 * 3:lustre-MDT0000-mdtlov 4:f
4566 * We generate the QMT name from the MDT one, just replacing MD with QM
4567 * after all the preparations, the logical equivalent will be:
4568 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4569 * 3:lustre-MDT0000-osd 4:f */
4570 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4571 OBD_ALLOC(uuid, UUID_MAX);
4572 OBD_ALLOC_PTR(bufs);
4573 OBD_ALLOC_PTR(data);
4574 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4575 GOTO(cleanup_mem, rc = -ENOMEM);
4577 strcpy(qmtname, dev);
4578 p = strstr(qmtname, "-MDT");
4580 GOTO(cleanup_mem, rc = -ENOMEM);
4581 /* replace MD with QM */
4585 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4587 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4588 if (lprof == NULL || lprof->lp_dt == NULL) {
4589 CERROR("can't find profile for %s\n",
4590 lustre_cfg_string(cfg, 0));
4591 GOTO(cleanup_mem, rc = -EINVAL);
4594 lustre_cfg_bufs_reset(bufs, qmtname);
4595 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4596 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4597 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4599 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4601 GOTO(cleanup_mem, rc = -ENOMEM);
4603 rc = class_attach(lcfg);
4605 GOTO(lcfg_cleanup, rc);
4607 obd = class_name2obd(qmtname);
4609 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4610 lustre_cfg_string(cfg, 0));
4611 GOTO(class_detach, rc = -EINVAL);
4614 lustre_cfg_free(lcfg);
4616 lustre_cfg_bufs_reset(bufs, qmtname);
4617 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4618 lustre_cfg_bufs_set_string(bufs, 2, dev);
4620 /* for quota, the next device should be the OSD device */
4621 lustre_cfg_bufs_set_string(bufs, 3,
4622 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4624 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4626 rc = class_setup(obd, lcfg);
4628 GOTO(class_detach, rc);
4630 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4632 /* configure local quota objects */
4633 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4637 GOTO(class_cleanup, rc);
4639 /* connect to quota master target */
4640 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4641 data->ocd_version = LUSTRE_VERSION_CODE;
4642 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4645 CERROR("cannot connect to quota master device %s (%d)\n",
4647 GOTO(class_cleanup, rc);
4653 class_manual_cleanup(obd);
4654 mdt->mdt_qmt_dev = NULL;
4658 class_detach(obd, lcfg);
4660 lustre_cfg_free(lcfg);
4665 OBD_FREE(qmtname, MAX_OBD_NAME);
4667 OBD_FREE(uuid, UUID_MAX);
4673 /* Shutdown quota master target associated with mdt */
4674 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4678 if (mdt->mdt_qmt_exp == NULL)
4680 LASSERT(mdt->mdt_qmt_dev != NULL);
4682 /* the qmt automatically shuts down when the mdt disconnects */
4683 obd_disconnect(mdt->mdt_qmt_exp);
4684 mdt->mdt_qmt_exp = NULL;
4685 mdt->mdt_qmt_dev = NULL;
4689 static struct tgt_handler mdt_tgt_handlers[] = {
4690 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4691 0, MDS_CONNECT, mdt_tgt_connect,
4692 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4693 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4694 0, MDS_DISCONNECT, tgt_disconnect,
4695 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4698 static struct tgt_opc_slice mdt_common_slice[] = {
4700 .tos_opc_start = MDS_FIRST_OPC,
4701 .tos_opc_end = MDS_LAST_OPC,
4702 .tos_hs = mdt_tgt_handlers
4705 .tos_opc_start = OBD_FIRST_OPC,
4706 .tos_opc_end = OBD_LAST_OPC,
4707 .tos_hs = tgt_obd_handlers
4710 .tos_opc_start = LDLM_FIRST_OPC,
4711 .tos_opc_end = LDLM_LAST_OPC,
4712 .tos_hs = tgt_dlm_handlers
4715 .tos_opc_start = SEC_FIRST_OPC,
4716 .tos_opc_end = SEC_LAST_OPC,
4717 .tos_hs = tgt_sec_ctx_handlers
4720 .tos_opc_start = UPDATE_OBJ,
4721 .tos_opc_end = UPDATE_LAST_OPC,
4722 .tos_hs = tgt_out_handlers
4725 .tos_opc_start = FLD_FIRST_OPC,
4726 .tos_opc_end = FLD_LAST_OPC,
4727 .tos_hs = fld_handlers
4730 .tos_opc_start = SEQ_FIRST_OPC,
4731 .tos_opc_end = SEQ_LAST_OPC,
4732 .tos_hs = seq_handlers
4739 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4741 struct md_device *next = m->mdt_child;
4742 struct lu_device *d = &m->mdt_lu_dev;
4743 struct obd_device *obd = mdt2obd_dev(m);
4746 target_recovery_fini(obd);
4748 ping_evictor_stop();
4750 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4752 if (m->mdt_opts.mo_coordinator)
4753 mdt_hsm_cdt_stop(m);
4755 mdt_hsm_cdt_fini(m);
4757 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4758 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4759 obd_exports_barrier(obd);
4760 obd_zombie_barrier();
4764 tgt_fini(env, &m->mdt_lut);
4765 mdt_fs_cleanup(env, m);
4766 upcall_cache_cleanup(m->mdt_identity_cache);
4767 m->mdt_identity_cache = NULL;
4769 if (m->mdt_namespace != NULL) {
4770 ldlm_namespace_free(m->mdt_namespace, NULL,
4771 d->ld_obd->obd_force);
4772 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4775 mdt_quota_fini(env, m);
4777 cfs_free_nidlist(&m->mdt_nosquash_nids);
4778 if (m->mdt_nosquash_str) {
4779 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4780 m->mdt_nosquash_str = NULL;
4781 m->mdt_nosquash_strlen = 0;
4784 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_PAUSE_LFSCK, 0, NULL);
4786 mdt_seq_fini(env, m);
4787 mdt_fld_fini(env, m);
4788 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4790 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4791 cfs_timer_disarm(&m->mdt_ck_timer);
4792 mdt_ck_thread_stop(m);
4797 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4799 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4801 server_put_mount(mdt_obd_name(m), NULL);
4806 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4808 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4809 struct sptlrpc_rule_set tmp_rset;
4812 sptlrpc_rule_set_init(&tmp_rset);
4813 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4815 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4816 mdt_obd_name(m), rc);
4820 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4822 write_lock(&m->mdt_sptlrpc_lock);
4823 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4824 m->mdt_sptlrpc_rset = tmp_rset;
4825 write_unlock(&m->mdt_sptlrpc_lock);
4830 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4832 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4833 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4835 struct mdt_thread_info *info;
4836 struct obd_device *obd;
4837 const char *dev = lustre_cfg_string(cfg, 0);
4838 const char *num = lustre_cfg_string(cfg, 2);
4839 struct lustre_mount_info *lmi = NULL;
4840 struct lustre_sb_info *lsi;
4842 struct seq_server_site *ss_site;
4843 const char *identity_upcall = "NONE";
4844 struct md_device *next;
4850 lu_device_init(&m->mdt_lu_dev, ldt);
4852 * Environment (env) might be missing mdt_thread_key values at that
4853 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4856 * Usually device allocation path doesn't use module key values, but
4857 * mdt has to do a lot of work here, so allocate key value.
4859 rc = lu_env_refill((struct lu_env *)env);
4863 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4864 LASSERT(info != NULL);
4866 obd = class_name2obd(dev);
4867 LASSERT(obd != NULL);
4869 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4871 m->mdt_som_conf = 0;
4873 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4875 /* default is coordinator off, it is started through conf_param
4877 m->mdt_opts.mo_coordinator = 0;
4879 lmi = server_get_mount(dev);
4881 CERROR("Cannot get mount info for %s!\n", dev);
4884 lsi = s2lsi(lmi->lmi_sb);
4885 /* CMD is supported only in IAM mode */
4887 node_id = simple_strtol(num, NULL, 10);
4888 obd->u.obt.obt_magic = OBT_MAGIC;
4891 rwlock_init(&m->mdt_sptlrpc_lock);
4892 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4894 spin_lock_init(&m->mdt_ioepoch_lock);
4895 m->mdt_opts.mo_compat_resname = 0;
4896 m->mdt_opts.mo_mds_capa = 1;
4897 m->mdt_opts.mo_oss_capa = 1;
4898 m->mdt_capa_timeout = CAPA_TIMEOUT;
4899 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4900 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4901 m->mdt_squash_uid = 0;
4902 m->mdt_squash_gid = 0;
4903 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4904 m->mdt_nosquash_str = NULL;
4905 m->mdt_nosquash_strlen = 0;
4906 init_rwsem(&m->mdt_squash_sem);
4907 spin_lock_init(&m->mdt_osfs_lock);
4908 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4909 m->mdt_enable_remote_dir = 0;
4910 m->mdt_enable_remote_dir_gid = 0;
4912 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4913 m->mdt_lu_dev.ld_obd = obd;
4914 /* Set this lu_device to obd for error handling purposes. */
4915 obd->obd_lu_dev = &m->mdt_lu_dev;
4917 /* init the stack */
4918 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4920 CERROR("%s: Can't init device stack, rc %d\n",
4921 mdt_obd_name(m), rc);
4926 ss_site = mdt_seq_site(m);
4927 s->ld_seq_site = ss_site;
4930 /* set server index */
4931 ss_site->ss_node_id = node_id;
4933 /* failover is the default
4934 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4935 * assumed whose ss_node_id == 0 XXX
4937 obd->obd_replayable = 1;
4938 /* No connection accepted until configurations will finish */
4939 obd->obd_no_conn = 1;
4941 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4942 char *str = lustre_cfg_string(cfg, 4);
4943 if (strchr(str, 'n')) {
4944 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4945 obd->obd_replayable = 0;
4949 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4951 GOTO(err_fini_stack, rc);
4953 rc = mdt_seq_init(env, mdt_obd_name(m), m);
4955 GOTO(err_fini_fld, rc);
4957 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4958 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4959 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4960 LDLM_NAMESPACE_SERVER,
4961 LDLM_NAMESPACE_GREEDY,
4963 if (m->mdt_namespace == NULL)
4964 GOTO(err_fini_seq, rc = -ENOMEM);
4966 m->mdt_namespace->ns_lvbp = m;
4967 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4969 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4970 /* set obd_namespace for compatibility with old code */
4971 obd->obd_namespace = m->mdt_namespace;
4973 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4975 rc = mdt_hsm_cdt_init(m);
4977 CERROR("%s: error initializing coordinator, rc %d\n",
4978 mdt_obd_name(m), rc);
4979 GOTO(err_free_ns, rc);
4982 rc = mdt_ck_thread_start(m);
4984 GOTO(err_free_hsm, rc);
4986 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4987 OBD_FAIL_MDS_ALL_REQUEST_NET,
4988 OBD_FAIL_MDS_ALL_REPLY_NET);
4992 rc = mdt_fs_setup(env, m, obd, lsi);
4996 mdt_adapt_sptlrpc_conf(obd, 1);
4998 next = m->mdt_child;
4999 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
5002 GOTO(err_fs_cleanup, rc);
5004 if (mntopts & MNTOPT_USERXATTR)
5005 m->mdt_opts.mo_user_xattr = 1;
5007 m->mdt_opts.mo_user_xattr = 0;
5009 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
5011 GOTO(err_fs_cleanup, rc);
5013 if (mntopts & MNTOPT_ACL)
5014 m->mdt_opts.mo_acl = 1;
5016 m->mdt_opts.mo_acl = 0;
5018 /* XXX: to support suppgid for ACL, we enable identity_upcall
5019 * by default, otherwise, maybe got unexpected -EACCESS. */
5020 if (m->mdt_opts.mo_acl)
5021 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5023 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5025 &mdt_identity_upcall_cache_ops);
5026 if (IS_ERR(m->mdt_identity_cache)) {
5027 rc = PTR_ERR(m->mdt_identity_cache);
5028 m->mdt_identity_cache = NULL;
5029 GOTO(err_fs_cleanup, rc);
5032 rc = mdt_procfs_init(m, dev);
5034 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5035 GOTO(err_recovery, rc);
5038 rc = mdt_quota_init(env, m, cfg);
5040 GOTO(err_procfs, rc);
5042 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5043 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5044 "mdt_ldlm_client", m->mdt_ldlm_client);
5046 ping_evictor_start();
5048 /* recovery will be started upon mdt_prepare()
5049 * when the whole stack is complete and ready
5050 * to serve the requests */
5052 mdt_init_capa_ctxt(env, m);
5054 /* Reduce the initial timeout on an MDS because it doesn't need such
5055 * a long timeout as an OST does. Adaptive timeouts will adjust this
5056 * value appropriately. */
5057 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5058 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5064 target_recovery_fini(obd);
5065 upcall_cache_cleanup(m->mdt_identity_cache);
5066 m->mdt_identity_cache = NULL;
5068 mdt_fs_cleanup(env, m);
5070 tgt_fini(env, &m->mdt_lut);
5072 cfs_timer_disarm(&m->mdt_ck_timer);
5073 mdt_ck_thread_stop(m);
5075 mdt_hsm_cdt_fini(m);
5077 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5078 obd->obd_namespace = m->mdt_namespace = NULL;
5080 mdt_seq_fini(env, m);
5082 mdt_fld_fini(env, m);
5084 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5087 server_put_mount(dev, lmi->lmi_mnt);
5091 /* For interoperability, the left element is old parameter, the right one
5092 * is the new version of the parameter, if some parameter is deprecated,
5093 * the new version should be set as NULL. */
5094 static struct cfg_interop_param mdt_interop_param[] = {
5095 { "mdt.group_upcall", NULL },
5096 { "mdt.quota_type", NULL },
5097 { "mdd.quota_type", NULL },
5098 { "mdt.rootsquash", "mdt.root_squash" },
5099 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5103 /* used by MGS to process specific configurations */
5104 static int mdt_process_config(const struct lu_env *env,
5105 struct lu_device *d, struct lustre_cfg *cfg)
5107 struct mdt_device *m = mdt_dev(d);
5108 struct md_device *md_next = m->mdt_child;
5109 struct lu_device *next = md2lu_dev(md_next);
5113 switch (cfg->lcfg_command) {
5115 struct lprocfs_static_vars lvars;
5116 struct obd_device *obd = d->ld_obd;
5118 /* For interoperability */
5119 struct cfg_interop_param *ptr = NULL;
5120 struct lustre_cfg *old_cfg = NULL;
5123 param = lustre_cfg_string(cfg, 1);
5124 if (param == NULL) {
5125 CERROR("param is empty\n");
5130 ptr = class_find_old_param(param, mdt_interop_param);
5132 if (ptr->new_param == NULL) {
5134 CWARN("For interoperability, skip this %s."
5135 " It is obsolete.\n", ptr->old_param);
5139 CWARN("Found old param %s, changed it to %s.\n",
5140 ptr->old_param, ptr->new_param);
5143 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5150 lprocfs_mdt_init_vars(&lvars);
5151 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
5153 if (rc > 0 || rc == -ENOSYS)
5154 /* we don't understand; pass it on */
5155 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5157 if (old_cfg != NULL)
5158 lustre_cfg_free(cfg);
5163 /* others are passed further */
5164 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5170 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5171 const struct lu_object_header *hdr,
5172 struct lu_device *d)
5174 struct mdt_object *mo;
5178 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, __GFP_IO);
5180 struct lu_object *o;
5181 struct lu_object_header *h;
5184 h = &mo->mot_header;
5185 lu_object_header_init(h);
5186 lu_object_init(o, h, d);
5187 lu_object_add_top(h, o);
5188 o->lo_ops = &mdt_obj_ops;
5189 mutex_init(&mo->mot_ioepoch_mutex);
5190 mutex_init(&mo->mot_lov_mutex);
5191 init_rwsem(&mo->mot_open_sem);
5192 init_rwsem(&mo->mot_xattr_sem);
5198 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5199 const struct lu_object_conf *unused)
5201 struct mdt_device *d = mdt_dev(o->lo_dev);
5202 struct lu_device *under;
5203 struct lu_object *below;
5207 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5208 PFID(lu_object_fid(o)));
5210 under = &d->mdt_child->md_lu_dev;
5211 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5212 if (below != NULL) {
5213 lu_object_add(o, below);
5220 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5222 struct mdt_object *mo = mdt_obj(o);
5223 struct lu_object_header *h;
5227 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5228 PFID(lu_object_fid(o)));
5230 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5231 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5234 lu_object_header_fini(h);
5235 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5240 static int mdt_object_print(const struct lu_env *env, void *cookie,
5241 lu_printer_t p, const struct lu_object *o)
5243 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5244 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
5245 "flags="LPX64", epochcount=%d, writecount=%d)",
5246 mdto, mdto->mot_ioepoch, mdto->mot_flags,
5247 mdto->mot_ioepoch_count, mdto->mot_writecount);
5250 static int mdt_prepare(const struct lu_env *env,
5251 struct lu_device *pdev,
5252 struct lu_device *cdev)
5254 struct mdt_device *mdt = mdt_dev(cdev);
5255 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5256 struct obd_device *obd = cdev->ld_obd;
5257 struct lfsck_start_param lsp;
5264 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5268 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5272 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5276 lsp.lsp_start = NULL;
5277 lsp.lsp_namespace = mdt->mdt_namespace;
5278 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5279 OBD_IOC_START_LFSCK,
5282 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5283 mdt_obd_name(mdt), rc);
5287 if (mdt->mdt_seq_site.ss_node_id == 0) {
5288 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5289 &mdt->mdt_md_root_fid);
5294 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5295 target_recovery_init(&mdt->mdt_lut, mdt_recovery_handle);
5296 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5297 LASSERT(obd->obd_no_conn);
5298 spin_lock(&obd->obd_dev_lock);
5299 obd->obd_no_conn = 0;
5300 spin_unlock(&obd->obd_dev_lock);
5302 if (obd->obd_recovering == 0)
5303 mdt_postrecov(env, mdt);
5308 const struct lu_device_operations mdt_lu_ops = {
5309 .ldo_object_alloc = mdt_object_alloc,
5310 .ldo_process_config = mdt_process_config,
5311 .ldo_prepare = mdt_prepare,
5314 static const struct lu_object_operations mdt_obj_ops = {
5315 .loo_object_init = mdt_object_init,
5316 .loo_object_free = mdt_object_free,
5317 .loo_object_print = mdt_object_print
5320 static int mdt_obd_set_info_async(const struct lu_env *env,
5321 struct obd_export *exp,
5322 __u32 keylen, void *key,
5323 __u32 vallen, void *val,
5324 struct ptlrpc_request_set *set)
5326 struct obd_device *obd = exp->exp_obd;
5332 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5333 rc = mdt_adapt_sptlrpc_conf(obd, 0);
5341 * Match client and server connection feature flags.
5343 * Compute the compatibility flags for a connection request based on
5344 * features mutually supported by client and server.
5346 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5347 * must not be updated here, otherwise a partially initialized value may
5348 * be exposed. After the connection request is successfully processed,
5349 * the top-level MDT connect request handler atomically updates the export
5350 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5351 * reply. \see mdt_connect().
5353 * \param exp the obd_export associated with this client/target pair
5354 * \param mdt the target device for the connection
5355 * \param data stores data for this connect request
5358 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5359 * \retval -EBADE client and server feature requirements are incompatible
5361 static int mdt_connect_internal(struct obd_export *exp,
5362 struct mdt_device *mdt,
5363 struct obd_connect_data *data)
5365 LASSERT(data != NULL);
5367 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5368 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5370 /* If no known bits (which should not happen, probably,
5371 as everybody should support LOOKUP and UPDATE bits at least)
5372 revert to compat mode with plain locks. */
5373 if (!data->ocd_ibits_known &&
5374 data->ocd_connect_flags & OBD_CONNECT_IBITS)
5375 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
5377 if (!mdt->mdt_opts.mo_acl)
5378 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5380 if (!mdt->mdt_opts.mo_user_xattr)
5381 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5383 if (!mdt->mdt_som_conf)
5384 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
5386 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
5387 data->ocd_brw_size = min(data->ocd_brw_size,
5388 (__u32)MD_MAX_BRW_SIZE);
5389 if (data->ocd_brw_size == 0) {
5390 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
5391 " ocd_version: %x ocd_grant: %d "
5392 "ocd_index: %u ocd_brw_size is "
5393 "unexpectedly zero, network data "
5394 "corruption? Refusing connection of this"
5397 exp->exp_client_uuid.uuid,
5398 exp, data->ocd_connect_flags, data->ocd_version,
5399 data->ocd_grant, data->ocd_index);
5404 /* NB: Disregard the rule against updating
5405 * exp_connect_data.ocd_connect_flags in this case, since
5406 * tgt_client_new() needs to know if this is a lightweight
5407 * connection, and it is safe to expose this flag before
5408 * connection processing completes. */
5409 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5410 spin_lock(&exp->exp_lock);
5411 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5412 spin_unlock(&exp->exp_lock);
5415 data->ocd_version = LUSTRE_VERSION_CODE;
5416 exp->exp_connect_data = *data;
5417 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
5419 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5420 CWARN("%s: MDS requires FID support, but client not\n",
5425 if (mdt->mdt_som_conf &&
5426 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
5427 OBD_CONNECT_MDS_MDS |
5428 OBD_CONNECT_SOM))) {
5429 CWARN("%s: MDS has SOM enabled, but client does not support "
5430 "it\n", mdt_obd_name(mdt));
5434 if (OCD_HAS_FLAG(data, PINGLESS)) {
5435 if (ptlrpc_pinger_suppress_pings()) {
5436 spin_lock(&exp->exp_obd->obd_dev_lock);
5437 list_del_init(&exp->exp_obd_chain_timed);
5438 spin_unlock(&exp->exp_obd->obd_dev_lock);
5440 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5444 data->ocd_max_easize = mdt->mdt_max_ea_size;
5449 int mdt_connect_check_sptlrpc(struct mdt_device *mdt, struct obd_export *exp,
5450 struct ptlrpc_request *req)
5452 struct sptlrpc_flavor flvr;
5455 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
5456 read_lock(&mdt->mdt_sptlrpc_lock);
5457 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
5461 read_unlock(&mdt->mdt_sptlrpc_lock);
5463 spin_lock(&exp->exp_lock);
5465 exp->exp_sp_peer = req->rq_sp_from;
5466 exp->exp_flvr = flvr;
5468 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
5469 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
5470 CERROR("unauthorized rpc flavor %x from %s, "
5471 "expect %x\n", req->rq_flvr.sf_rpc,
5472 libcfs_nid2str(req->rq_peer.nid),
5473 exp->exp_flvr.sf_rpc);
5477 spin_unlock(&exp->exp_lock);
5479 if (exp->exp_sp_peer != req->rq_sp_from) {
5480 CERROR("RPC source %s doesn't match %s\n",
5481 sptlrpc_part2name(req->rq_sp_from),
5482 sptlrpc_part2name(exp->exp_sp_peer));
5485 rc = sptlrpc_target_export_check(exp, req);
5492 /* mds_connect copy */
5493 static int mdt_obd_connect(const struct lu_env *env,
5494 struct obd_export **exp, struct obd_device *obd,
5495 struct obd_uuid *cluuid,
5496 struct obd_connect_data *data,
5499 struct obd_export *lexp;
5500 struct lustre_handle conn = { 0 };
5501 struct mdt_device *mdt;
5505 LASSERT(env != NULL);
5506 if (!exp || !obd || !cluuid)
5509 mdt = mdt_dev(obd->obd_lu_dev);
5512 * first, check whether the stack is ready to handle requests
5513 * XXX: probably not very appropriate method is used now
5514 * at some point we should find a better one
5516 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5517 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5518 rc = obd_health_check(env, mdt->mdt_child_exp->exp_obd);
5521 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5524 rc = class_connect(&conn, obd, cluuid);
5528 lexp = class_conn2export(&conn);
5529 LASSERT(lexp != NULL);
5531 rc = mdt_connect_internal(lexp, mdt, data);
5533 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5536 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5537 rc = tgt_client_new(env, lexp);
5539 mdt_export_stats_init(obd, lexp, localdata);
5543 class_disconnect(lexp);
5552 static int mdt_obd_reconnect(const struct lu_env *env,
5553 struct obd_export *exp, struct obd_device *obd,
5554 struct obd_uuid *cluuid,
5555 struct obd_connect_data *data,
5561 if (exp == NULL || obd == NULL || cluuid == NULL)
5564 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5566 mdt_export_stats_init(obd, exp, localdata);
5571 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5572 struct mdt_thread_info *info,
5573 struct mdt_file_data *mfd)
5575 struct lu_context ses;
5579 rc = lu_context_init(&ses, LCT_SESSION);
5584 lu_context_enter(&ses);
5586 mdt_ucred(info)->uc_valid = UCRED_OLD;
5587 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5589 lu_context_exit(&ses);
5590 lu_context_fini(&ses);
5596 static int mdt_export_cleanup(struct obd_export *exp)
5598 struct mdt_export_data *med = &exp->exp_mdt_data;
5599 struct obd_device *obd = exp->exp_obd;
5600 struct mdt_device *mdt;
5601 struct mdt_thread_info *info;
5603 CFS_LIST_HEAD(closing_list);
5604 struct mdt_file_data *mfd, *n;
5608 spin_lock(&med->med_open_lock);
5609 while (!cfs_list_empty(&med->med_open_head)) {
5610 cfs_list_t *tmp = med->med_open_head.next;
5611 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5613 /* Remove mfd handle so it can't be found again.
5614 * We are consuming the mfd_list reference here. */
5615 class_handle_unhash(&mfd->mfd_handle);
5616 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5618 spin_unlock(&med->med_open_lock);
5619 mdt = mdt_dev(obd->obd_lu_dev);
5620 LASSERT(mdt != NULL);
5622 rc = lu_env_init(&env, LCT_MD_THREAD);
5626 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5627 LASSERT(info != NULL);
5628 memset(info, 0, sizeof *info);
5629 info->mti_env = &env;
5630 info->mti_mdt = mdt;
5631 info->mti_exp = exp;
5633 if (!cfs_list_empty(&closing_list)) {
5634 struct md_attr *ma = &info->mti_attr;
5636 /* Close any open files (which may also cause orphan unlinking). */
5637 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5638 cfs_list_del_init(&mfd->mfd_list);
5639 ma->ma_need = ma->ma_valid = 0;
5641 /* This file is being closed due to an eviction, it
5642 * could have been modified and now dirty regarding to
5643 * HSM archive, check this!
5644 * The logic here is to mark a file dirty if there's a
5645 * chance it was dirtied before the client was evicted,
5646 * so that we don't have to wait for a release attempt
5647 * before finding out the file was actually dirty and
5648 * fail the release. Aggressively marking it dirty here
5649 * will cause the policy engine to attempt to
5650 * re-archive it; when rearchiving, we can compare the
5651 * current version to the HSM data_version and make the
5652 * archive request into a noop if it's not actually
5655 if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
5656 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5658 /* Don't unlink orphan on failover umount, LU-184 */
5659 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5660 ma->ma_valid = MA_FLAGS;
5661 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5663 mdt_mfd_close(info, mfd);
5666 info->mti_mdt = NULL;
5667 /* cleanup client slot early */
5668 /* Do not erase record for recoverable client. */
5669 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5670 tgt_client_del(&env, exp);
5676 static int mdt_obd_disconnect(struct obd_export *exp)
5682 class_export_get(exp);
5684 rc = server_disconnect_export(exp);
5686 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5688 rc = mdt_export_cleanup(exp);
5689 class_export_put(exp);
5693 /* FIXME: Can we avoid using these two interfaces? */
5694 static int mdt_init_export(struct obd_export *exp)
5696 struct mdt_export_data *med = &exp->exp_mdt_data;
5700 CFS_INIT_LIST_HEAD(&med->med_open_head);
5701 spin_lock_init(&med->med_open_lock);
5702 mutex_init(&med->med_idmap_mutex);
5703 med->med_idmap = NULL;
5704 spin_lock(&exp->exp_lock);
5705 exp->exp_connecting = 1;
5706 spin_unlock(&exp->exp_lock);
5708 /* self-export doesn't need client data and ldlm initialization */
5709 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5710 &exp->exp_client_uuid)))
5713 rc = tgt_client_alloc(exp);
5717 rc = ldlm_init_export(exp);
5724 tgt_client_free(exp);
5726 CERROR("%s: Failed to initialize export: rc = %d\n",
5727 exp->exp_obd->obd_name, rc);
5731 static int mdt_destroy_export(struct obd_export *exp)
5735 if (exp_connect_rmtclient(exp))
5736 mdt_cleanup_idmap(&exp->exp_mdt_data);
5738 target_destroy_export(exp);
5739 /* destroy can be called from failed obd_setup, so
5740 * checking uuid is safer than obd_self_export */
5741 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5742 &exp->exp_client_uuid)))
5745 ldlm_destroy_export(exp);
5746 tgt_client_free(exp);
5748 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5749 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5754 /** The maximum depth that fid2path() will search.
5755 * This is limited only because we want to store the fids for
5756 * historical path lookup purposes.
5758 #define MAX_PATH_DEPTH 100
5760 /** mdt_path() lookup structure. */
5761 struct path_lookup_info {
5762 __u64 pli_recno; /**< history point */
5763 __u64 pli_currec; /**< current record */
5764 struct lu_fid pli_fid;
5765 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5766 struct mdt_object *pli_mdt_obj;
5767 char *pli_path; /**< full path */
5769 int pli_linkno; /**< which hardlink to follow */
5770 int pli_fidcount; /**< number of \a pli_fids */
5773 static int mdt_links_read(struct mdt_thread_info *info,
5774 struct mdt_object *mdt_obj, struct linkea_data *ldata)
5778 LASSERT(ldata->ld_buf->lb_buf != NULL);
5780 if (!mdt_object_exists(mdt_obj))
5783 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5784 ldata->ld_buf, XATTR_NAME_LINK);
5785 if (rc == -ERANGE) {
5786 /* Buf was too small, figure out what we need. */
5787 lu_buf_free(ldata->ld_buf);
5788 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5789 ldata->ld_buf, XATTR_NAME_LINK);
5792 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5793 if (ldata->ld_buf->lb_buf == NULL)
5795 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5796 ldata->ld_buf, XATTR_NAME_LINK);
5801 return linkea_init(ldata);
5804 static int mdt_path_current(struct mdt_thread_info *info,
5805 struct path_lookup_info *pli)
5807 struct mdt_device *mdt = info->mti_mdt;
5808 struct mdt_object *mdt_obj;
5809 struct link_ea_header *leh;
5810 struct link_ea_entry *lee;
5811 struct lu_name *tmpname = &info->mti_name;
5812 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5813 struct lu_buf *buf = &info->mti_big_buf;
5816 struct linkea_data ldata = { 0 };
5820 /* temp buffer for path element, the buffer will be finally freed
5821 * in mdt_thread_info_fini */
5822 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5823 if (buf->lb_buf == NULL)
5827 ptr = pli->pli_path + pli->pli_pathlen - 1;
5830 pli->pli_fidcount = 0;
5831 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5833 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5834 * so checking root_fid can only happen on MDT0. */
5835 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5836 &pli->pli_fids[pli->pli_fidcount])) {
5837 mdt_obj = mdt_object_find(info->mti_env, mdt,
5838 &pli->pli_fids[pli->pli_fidcount]);
5839 if (IS_ERR(mdt_obj))
5840 GOTO(out, rc = PTR_ERR(mdt_obj));
5841 if (mdt_object_remote(mdt_obj)) {
5842 mdt_object_put(info->mti_env, mdt_obj);
5843 GOTO(remote_out, rc = -EREMOTE);
5845 if (!mdt_object_exists(mdt_obj)) {
5846 mdt_object_put(info->mti_env, mdt_obj);
5847 GOTO(out, rc = -ENOENT);
5850 rc = mdt_links_read(info, mdt_obj, &ldata);
5851 mdt_object_put(info->mti_env, mdt_obj);
5856 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5857 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5858 /* If set, use link #linkno for path lookup, otherwise use
5859 link #0. Only do this for the final path element. */
5860 if ((pli->pli_fidcount == 0) &&
5861 (pli->pli_linkno < leh->leh_reccount)) {
5863 for (count = 0; count < pli->pli_linkno; count++) {
5864 lee = (struct link_ea_entry *)
5865 ((char *)lee + reclen);
5866 linkea_entry_unpack(lee, &reclen, tmpname,
5869 if (pli->pli_linkno < leh->leh_reccount - 1)
5870 /* indicate to user there are more links */
5874 /* Pack the name in the end of the buffer */
5875 ptr -= tmpname->ln_namelen;
5876 if (ptr - 1 <= pli->pli_path)
5877 GOTO(out, rc = -EOVERFLOW);
5878 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5881 /* Store the parent fid for historic lookup */
5882 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5883 GOTO(out, rc = -EOVERFLOW);
5884 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5888 ptr++; /* skip leading / */
5889 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5896 /* Returns the full path to this fid, as of changelog record recno. */
5897 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5898 char *path, int pathlen, __u64 *recno, int *linkno,
5901 struct mdt_device *mdt = info->mti_mdt;
5902 struct path_lookup_info *pli;
5910 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5919 pli->pli_mdt_obj = obj;
5920 pli->pli_recno = *recno;
5921 pli->pli_path = path;
5922 pli->pli_pathlen = pathlen;
5923 pli->pli_linkno = *linkno;
5925 /* Retry multiple times in case file is being moved */
5926 while (tries-- && rc == -EAGAIN)
5927 rc = mdt_path_current(info, pli);
5929 /* return the last resolved fids to the client, so the client will
5930 * build the left path on another MDT for remote object */
5931 *fid = pli->pli_fids[pli->pli_fidcount];
5933 *recno = pli->pli_currec;
5934 /* Return next link index to caller */
5935 *linkno = pli->pli_linkno;
5942 static int mdt_fid2path(struct mdt_thread_info *info,
5943 struct getinfo_fid2path *fp)
5945 struct mdt_device *mdt = info->mti_mdt;
5946 struct mdt_object *obj;
5950 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5951 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5953 if (!fid_is_sane(&fp->gf_fid))
5956 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5957 CWARN("%s: "DFID" is invalid, sequence should be "
5958 ">= "LPX64"\n", mdt_obd_name(mdt),
5959 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5963 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5964 if (obj == NULL || IS_ERR(obj)) {
5965 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5970 if (mdt_object_remote(obj))
5972 else if (!mdt_object_exists(obj))
5978 mdt_object_put(info->mti_env, obj);
5979 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5980 PFID(&fp->gf_fid), rc);
5984 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5985 &fp->gf_linkno, &fp->gf_fid);
5987 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5988 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5990 mdt_object_put(info->mti_env, obj);
5995 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5996 void *val, int vallen)
5998 struct getinfo_fid2path *fpout, *fpin;
6001 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6004 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6005 lustre_swab_fid2path(fpin);
6007 memcpy(fpout, fpin, sizeof(*fpin));
6008 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6011 rc = mdt_fid2path(info, fpout);
6015 int mdt_get_info(struct mdt_thread_info *info)
6017 struct ptlrpc_request *req = mdt_info_req(info);
6025 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
6027 CDEBUG(D_IOCTL, "No GETINFO key");
6030 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
6033 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
6034 if (vallen == NULL) {
6035 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
6039 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6041 rc = req_capsule_server_pack(info->mti_pill);
6042 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
6043 if (valout == NULL) {
6044 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
6048 if (KEY_IS(KEY_FID2PATH))
6049 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
6053 lustre_msg_set_status(req->rq_repmsg, rc);
6058 /* Pass the ioc down */
6059 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
6060 unsigned int cmd, int len, void *data)
6062 struct lu_context ioctl_session;
6063 struct md_device *next = mdt->mdt_child;
6067 rc = lu_context_init(&ioctl_session, LCT_SESSION);
6070 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
6071 lu_context_enter(&ioctl_session);
6072 env->le_ses = &ioctl_session;
6074 LASSERT(next->md_ops->mdo_iocontrol);
6075 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
6077 lu_context_exit(&ioctl_session);
6078 lu_context_fini(&ioctl_session);
6082 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6084 struct obd_ioctl_data *data = karg;
6087 struct mdt_object *obj;
6088 struct mdt_lock_handle *lh;
6092 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6093 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6096 fid = (struct lu_fid *)data->ioc_inlbuf1;
6098 if (!fid_is_sane(fid))
6101 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6103 lh = &mti->mti_lh[MDT_LH_PARENT];
6104 mdt_lock_reg_init(lh, LCK_CR);
6106 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6108 RETURN(PTR_ERR(obj));
6110 if (mdt_object_remote(obj)) {
6113 * before calling version get the correct MDS should be
6114 * fid, this is error to find remote object here
6116 CERROR("nonlocal object "DFID"\n", PFID(fid));
6117 } else if (!mdt_object_exists(obj)) {
6118 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6121 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6122 *(__u64 *)data->ioc_inlbuf2 = version;
6125 mdt_object_unlock_put(mti, obj, lh, 1);
6129 /* ioctls on obd dev */
6130 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6131 void *karg, void *uarg)
6134 struct obd_device *obd = exp->exp_obd;
6135 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6136 struct dt_device *dt = mdt->mdt_bottom;
6140 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6141 rc = lu_env_init(&env, LCT_MD_THREAD);
6147 rc = mdt_device_sync(&env, mdt);
6149 case OBD_IOC_SET_READONLY:
6150 rc = dt->dd_ops->dt_ro(&env, dt);
6152 case OBD_IOC_ABORT_RECOVERY:
6153 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6154 target_stop_recovery_thread(obd);
6157 case OBD_IOC_CHANGELOG_REG:
6158 case OBD_IOC_CHANGELOG_DEREG:
6159 case OBD_IOC_CHANGELOG_CLEAR:
6160 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
6162 case OBD_IOC_START_LFSCK: {
6163 struct md_device *next = mdt->mdt_child;
6164 struct obd_ioctl_data *data = karg;
6165 struct lfsck_start_param lsp;
6167 if (unlikely(data == NULL)) {
6172 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6173 lsp.lsp_namespace = mdt->mdt_namespace;
6174 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6177 case OBD_IOC_STOP_LFSCK: {
6178 struct md_device *next = mdt->mdt_child;
6180 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, NULL);
6183 case OBD_IOC_GET_OBJ_VERSION: {
6184 struct mdt_thread_info *mti;
6185 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6186 memset(mti, 0, sizeof *mti);
6187 mti->mti_env = &env;
6191 rc = mdt_ioc_version_get(mti, karg);
6196 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6197 mdt_obd_name(mdt), cmd, rc);
6204 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6206 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6210 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6214 int mdt_obd_postrecov(struct obd_device *obd)
6219 rc = lu_env_init(&env, LCT_MD_THREAD);
6222 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6227 static struct obd_ops mdt_obd_device_ops = {
6228 .o_owner = THIS_MODULE,
6229 .o_set_info_async = mdt_obd_set_info_async,
6230 .o_connect = mdt_obd_connect,
6231 .o_reconnect = mdt_obd_reconnect,
6232 .o_disconnect = mdt_obd_disconnect,
6233 .o_init_export = mdt_init_export,
6234 .o_destroy_export = mdt_destroy_export,
6235 .o_iocontrol = mdt_iocontrol,
6236 .o_postrecov = mdt_obd_postrecov,
6239 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6240 struct lu_device *d)
6242 struct mdt_device *m = mdt_dev(d);
6249 static struct lu_device *mdt_device_free(const struct lu_env *env,
6250 struct lu_device *d)
6252 struct mdt_device *m = mdt_dev(d);
6255 lu_device_fini(&m->mdt_lu_dev);
6261 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6262 struct lu_device_type *t,
6263 struct lustre_cfg *cfg)
6265 struct lu_device *l;
6266 struct mdt_device *m;
6273 rc = mdt_init0(env, m, t, cfg);
6275 mdt_device_free(env, l);
6280 l = ERR_PTR(-ENOMEM);
6284 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6285 LU_KEY_INIT(mdt, struct mdt_thread_info);
6287 static void mdt_key_fini(const struct lu_context *ctx,
6288 struct lu_context_key *key, void* data)
6290 struct mdt_thread_info *info = data;
6292 if (info->mti_big_lmm) {
6293 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6294 info->mti_big_lmm = NULL;
6295 info->mti_big_lmmsize = 0;
6300 /* context key: mdt_thread_key */
6301 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6303 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6305 return lu_ucred(info->mti_env);
6308 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6310 return lu_ucred_check(info->mti_env);
6314 * Enable/disable COS (Commit On Sharing).
6316 * Set/Clear the COS flag in mdt options.
6318 * \param mdt mdt device
6319 * \param val 0 disables COS, other values enable COS
6321 void mdt_enable_cos(struct mdt_device *mdt, int val)
6326 mdt->mdt_opts.mo_cos = !!val;
6327 rc = lu_env_init(&env, LCT_LOCAL);
6328 if (unlikely(rc != 0)) {
6329 CWARN("lu_env initialization failed with rc = %d,"
6330 "cannot sync\n", rc);
6333 mdt_device_sync(&env, mdt);
6338 * Check COS (Commit On Sharing) status.
6340 * Return COS flag status.
6342 * \param mdt mdt device
6344 int mdt_cos_is_enabled(struct mdt_device *mdt)
6346 return mdt->mdt_opts.mo_cos != 0;
6349 static struct lu_device_type_operations mdt_device_type_ops = {
6350 .ldto_device_alloc = mdt_device_alloc,
6351 .ldto_device_free = mdt_device_free,
6352 .ldto_device_fini = mdt_device_fini
6355 static struct lu_device_type mdt_device_type = {
6356 .ldt_tags = LU_DEVICE_MD,
6357 .ldt_name = LUSTRE_MDT_NAME,
6358 .ldt_ops = &mdt_device_type_ops,
6359 .ldt_ctx_tags = LCT_MD_THREAD
6362 static int __init mdt_mod_init(void)
6364 struct lprocfs_static_vars lvars;
6367 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6368 FID_NOBRACE_LEN + 1);
6369 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6371 rc = lu_kmem_init(mdt_caches);
6375 rc = mds_mod_init();
6379 lprocfs_mdt_init_vars(&lvars);
6380 rc = class_register_type(&mdt_obd_device_ops, NULL,
6381 lvars.module_vars, LUSTRE_MDT_NAME,
6387 lu_kmem_fini(mdt_caches);
6394 static void __exit mdt_mod_exit(void)
6396 class_unregister_type(LUSTRE_MDT_NAME);
6398 lu_kmem_fini(mdt_caches);
6401 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6402 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6403 MODULE_LICENSE("GPL");
6405 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);