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_mdt.h>
66 #include <lustre_log.h>
67 #include "mdt_internal.h"
68 #include <lustre_acl.h>
69 #include <lustre_param.h>
70 #include <lustre_quota.h>
72 mdl_mode_t mdt_mdl_lock_modes[] = {
73 [LCK_MINMODE] = MDL_MINMODE,
80 [LCK_GROUP] = MDL_GROUP
83 ldlm_mode_t mdt_dlm_lock_modes[] = {
84 [MDL_MINMODE] = LCK_MINMODE,
91 [MDL_GROUP] = LCK_GROUP
94 static struct mdt_device *mdt_dev(struct lu_device *d);
95 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
96 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
97 struct getinfo_fid2path *fp);
99 static const struct lu_object_operations mdt_obj_ops;
101 /* Slab for MDT object allocation */
102 static cfs_mem_cache_t *mdt_object_kmem;
104 static struct lu_kmem_descr mdt_caches[] = {
106 .ckd_cache = &mdt_object_kmem,
107 .ckd_name = "mdt_obj",
108 .ckd_size = sizeof(struct mdt_object)
115 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
119 return (rep->lock_policy_res1 & flag);
122 void mdt_clear_disposition(struct mdt_thread_info *info,
123 struct ldlm_reply *rep, int flag)
126 info->mti_opdata &= ~flag;
128 rep->lock_policy_res1 &= ~flag;
131 void mdt_set_disposition(struct mdt_thread_info *info,
132 struct ldlm_reply *rep, int flag)
135 info->mti_opdata |= flag;
137 rep->lock_policy_res1 |= flag;
140 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
142 lh->mlh_pdo_hash = 0;
143 lh->mlh_reg_mode = lm;
144 lh->mlh_rreg_mode = lm;
145 lh->mlh_type = MDT_REG_LOCK;
148 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
149 const char *name, int namelen)
151 lh->mlh_reg_mode = lm;
152 lh->mlh_rreg_mode = lm;
153 lh->mlh_type = MDT_PDO_LOCK;
155 if (name != NULL && (name[0] != '\0')) {
156 LASSERT(namelen > 0);
157 lh->mlh_pdo_hash = full_name_hash(name, namelen);
159 LASSERT(namelen == 0);
160 lh->mlh_pdo_hash = 0ull;
164 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
165 struct mdt_lock_handle *lh)
171 * Any dir access needs couple of locks:
173 * 1) on part of dir we gonna take lookup/modify;
175 * 2) on whole dir to protect it from concurrent splitting and/or to
176 * flush client's cache for readdir().
178 * so, for a given mode and object this routine decides what lock mode
179 * to use for lock #2:
181 * 1) if caller's gonna lookup in dir then we need to protect dir from
182 * being splitted only - LCK_CR
184 * 2) if caller's gonna modify dir then we need to protect dir from
185 * being splitted and to flush cache - LCK_CW
187 * 3) if caller's gonna modify dir and that dir seems ready for
188 * splitting then we need to protect it from any type of access
189 * (lookup/modify/split) - LCK_EX --bzzz
192 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
193 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
196 * Ask underlaying level its opinion about preferable PDO lock mode
197 * having access type passed as regular lock mode:
199 * - MDL_MINMODE means that lower layer does not want to specify lock
202 * - MDL_NL means that no PDO lock should be taken. This is used in some
203 * cases. Say, for non-splittable directories no need to use PDO locks
206 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
207 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
209 if (mode != MDL_MINMODE) {
210 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
213 * Lower layer does not want to specify locking mode. We do it
214 * our selves. No special protection is needed, just flush
215 * client's cache on modification and allow concurrent
218 switch (lh->mlh_reg_mode) {
220 lh->mlh_pdo_mode = LCK_EX;
223 lh->mlh_pdo_mode = LCK_CR;
226 lh->mlh_pdo_mode = LCK_CW;
229 CERROR("Not expected lock type (0x%x)\n",
230 (int)lh->mlh_reg_mode);
235 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
239 int mdt_getstatus(struct mdt_thread_info *info)
241 struct mdt_device *mdt = info->mti_mdt;
242 struct md_device *next = mdt->mdt_child;
243 struct mdt_body *repbody;
248 rc = mdt_check_ucred(info);
250 RETURN(err_serious(rc));
252 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
253 RETURN(err_serious(-ENOMEM));
255 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
256 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
260 repbody->valid |= OBD_MD_FLID;
262 if (mdt->mdt_opts.mo_mds_capa &&
263 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
264 struct mdt_object *root;
265 struct lustre_capa *capa;
267 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
269 RETURN(PTR_ERR(root));
271 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
273 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
274 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
276 mdt_object_put(info->mti_env, root);
278 repbody->valid |= OBD_MD_FLMDSCAPA;
284 int mdt_statfs(struct mdt_thread_info *info)
286 struct ptlrpc_request *req = mdt_info_req(info);
287 struct md_device *next = info->mti_mdt->mdt_child;
288 struct ptlrpc_service_part *svcpt;
289 struct obd_statfs *osfs;
294 svcpt = info->mti_pill->rc_req->rq_rqbd->rqbd_svcpt;
296 /* This will trigger a watchdog timeout */
297 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
298 (MDT_SERVICE_WATCHDOG_FACTOR *
299 at_get(&svcpt->scp_at_estimate)) + 1);
301 rc = mdt_check_ucred(info);
303 RETURN(err_serious(rc));
305 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
306 RETURN(err_serious(-ENOMEM));
308 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
312 /** statfs information are cached in the mdt_device */
313 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
314 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
315 /** statfs data is too old, get up-to-date one */
316 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
319 spin_lock(&info->mti_mdt->mdt_osfs_lock);
320 info->mti_mdt->mdt_osfs = *osfs;
321 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
322 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
324 /** use cached statfs data */
325 spin_lock(&info->mti_mdt->mdt_osfs_lock);
326 *osfs = info->mti_mdt->mdt_osfs;
327 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
331 mdt_counter_incr(req, LPROC_MDT_STATFS);
337 * Pack SOM attributes into the reply.
338 * Call under a DLM UPDATE lock.
340 static void mdt_pack_size2body(struct mdt_thread_info *info,
341 struct mdt_object *mo)
344 struct md_attr *ma = &info->mti_attr;
346 LASSERT(ma->ma_attr.la_valid & LA_MODE);
347 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
349 /* Check if Size-on-MDS is supported, if this is a regular file,
350 * if SOM is enabled on the object and if SOM cache exists and valid.
351 * Otherwise do not pack Size-on-MDS attributes to the reply. */
352 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
353 !S_ISREG(ma->ma_attr.la_mode) ||
354 !mdt_object_is_som_enabled(mo) ||
355 !(ma->ma_valid & MA_SOM))
358 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
359 b->size = ma->ma_som->msd_size;
360 b->blocks = ma->ma_som->msd_blocks;
363 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
364 const struct lu_attr *attr, const struct lu_fid *fid)
366 struct md_attr *ma = &info->mti_attr;
368 LASSERT(ma->ma_valid & MA_INODE);
370 b->atime = attr->la_atime;
371 b->mtime = attr->la_mtime;
372 b->ctime = attr->la_ctime;
373 b->mode = attr->la_mode;
374 b->size = attr->la_size;
375 b->blocks = attr->la_blocks;
376 b->uid = attr->la_uid;
377 b->gid = attr->la_gid;
378 b->flags = attr->la_flags;
379 b->nlink = attr->la_nlink;
380 b->rdev = attr->la_rdev;
382 /*XXX should pack the reply body according to lu_valid*/
383 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
384 OBD_MD_FLGID | OBD_MD_FLTYPE |
385 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
386 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
388 if (!S_ISREG(attr->la_mode)) {
389 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
390 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
391 /* means no objects are allocated on osts. */
392 LASSERT(!(ma->ma_valid & MA_LOV));
393 /* just ignore blocks occupied by extend attributes on MDS */
395 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
396 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
401 b->valid |= OBD_MD_FLID;
402 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
403 PFID(fid), b->nlink, b->mode, b->size);
407 mdt_body_reverse_idmap(info, b);
409 if (b->valid & OBD_MD_FLSIZE)
410 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
411 PFID(fid), (unsigned long long)b->size);
414 static inline int mdt_body_has_lov(const struct lu_attr *la,
415 const struct mdt_body *body)
417 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
418 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
421 void mdt_client_compatibility(struct mdt_thread_info *info)
423 struct mdt_body *body;
424 struct ptlrpc_request *req = mdt_info_req(info);
425 struct obd_export *exp = req->rq_export;
426 struct md_attr *ma = &info->mti_attr;
427 struct lu_attr *la = &ma->ma_attr;
430 if (exp_connect_flags(exp) & OBD_CONNECT_LAYOUTLOCK)
431 /* the client can deal with 16-bit lmm_stripe_count */
434 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
436 if (!mdt_body_has_lov(la, body))
439 /* now we have a reply with a lov for a client not compatible with the
440 * layout lock so we have to clean the layout generation number */
441 if (S_ISREG(la->la_mode))
442 ma->ma_lmm->lmm_layout_gen = 0;
446 static int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
449 const struct lu_env *env = info->mti_env;
453 LASSERT(info->mti_big_lmm_used == 0);
454 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
458 /* big_lmm may need to be grown */
459 if (info->mti_big_lmmsize < rc) {
460 int size = size_roundup_power2(rc);
462 if (info->mti_big_lmmsize > 0) {
463 /* free old buffer */
464 LASSERT(info->mti_big_lmm);
465 OBD_FREE_LARGE(info->mti_big_lmm,
466 info->mti_big_lmmsize);
467 info->mti_big_lmm = NULL;
468 info->mti_big_lmmsize = 0;
471 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
472 if (info->mti_big_lmm == NULL)
474 info->mti_big_lmmsize = size;
476 LASSERT(info->mti_big_lmmsize >= rc);
478 info->mti_buf.lb_buf = info->mti_big_lmm;
479 info->mti_buf.lb_len = info->mti_big_lmmsize;
480 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
485 int mdt_attr_get_lov(struct mdt_thread_info *info,
486 struct mdt_object *o, struct md_attr *ma)
488 struct md_object *next = mdt_object_child(o);
489 struct lu_buf *buf = &info->mti_buf;
492 buf->lb_buf = ma->ma_lmm;
493 buf->lb_len = ma->ma_lmm_size;
494 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LOV);
496 ma->ma_lmm_size = rc;
497 ma->ma_valid |= MA_LOV;
499 } else if (rc == -ENODATA) {
502 } else if (rc == -ERANGE) {
503 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LOV);
505 info->mti_big_lmm_used = 1;
506 ma->ma_valid |= MA_LOV;
507 ma->ma_lmm = info->mti_big_lmm;
508 ma->ma_lmm_size = rc;
509 /* update mdt_max_mdsize so all clients
510 * will be aware about that */
511 if (info->mti_mdt->mdt_max_mdsize < rc)
512 info->mti_mdt->mdt_max_mdsize = rc;
520 int mdt_attr_get_pfid(struct mdt_thread_info *info,
521 struct mdt_object *o, struct lu_fid *pfid)
523 struct lu_buf *buf = &info->mti_buf;
524 struct link_ea_header *leh;
525 struct link_ea_entry *lee;
529 buf->lb_buf = info->mti_big_lmm;
530 buf->lb_len = info->mti_big_lmmsize;
531 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
532 buf, XATTR_NAME_LINK);
533 /* ignore errors, MA_PFID won't be set and it is
534 * up to the caller to treat this as an error */
535 if (rc == -ERANGE || buf->lb_len == 0) {
536 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
537 buf->lb_buf = info->mti_big_lmm;
538 buf->lb_len = info->mti_big_lmmsize;
543 if (rc < sizeof(*leh)) {
544 CERROR("short LinkEA on "DFID": rc = %d\n",
545 PFID(mdt_object_fid(o)), rc);
549 leh = (struct link_ea_header *) buf->lb_buf;
550 lee = (struct link_ea_entry *)(leh + 1);
551 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
552 leh->leh_magic = LINK_EA_MAGIC;
553 leh->leh_reccount = __swab32(leh->leh_reccount);
554 leh->leh_len = __swab64(leh->leh_len);
556 if (leh->leh_magic != LINK_EA_MAGIC)
558 if (leh->leh_reccount == 0)
561 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
562 fid_be_to_cpu(pfid, pfid);
567 int mdt_attr_get_complex(struct mdt_thread_info *info,
568 struct mdt_object *o, struct md_attr *ma)
570 const struct lu_env *env = info->mti_env;
571 struct md_object *next = mdt_object_child(o);
572 struct lu_buf *buf = &info->mti_buf;
573 u32 mode = lu_object_attr(&next->mo_lu);
574 int need = ma->ma_need;
580 if (need & MA_INODE) {
581 ma->ma_need = MA_INODE;
582 rc = mo_attr_get(env, next, ma);
585 ma->ma_valid |= MA_INODE;
588 if (need & MA_PFID) {
589 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
591 ma->ma_valid |= MA_PFID;
592 /* ignore this error, parent fid is not mandatory */
596 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
597 rc = mdt_attr_get_lov(info, o, ma);
602 if (need & MA_LMV && S_ISDIR(mode)) {
603 buf->lb_buf = ma->ma_lmv;
604 buf->lb_len = ma->ma_lmv_size;
605 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
607 ma->ma_lmv_size = rc2;
608 ma->ma_valid |= MA_LMV;
609 } else if (rc2 == -ENODATA) {
616 if (need & MA_SOM && S_ISREG(mode)) {
617 buf->lb_buf = info->mti_xattr_buf;
618 buf->lb_len = sizeof(info->mti_xattr_buf);
619 CLASSERT(sizeof(struct som_attrs) <=
620 sizeof(info->mti_xattr_buf));
621 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
622 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
624 ma->ma_valid |= MA_SOM;
625 else if (rc2 < 0 && rc2 != -ENODATA)
629 if (need & MA_HSM && S_ISREG(mode)) {
630 buf->lb_buf = info->mti_xattr_buf;
631 buf->lb_len = sizeof(info->mti_xattr_buf);
632 CLASSERT(sizeof(struct hsm_attrs) <=
633 sizeof(info->mti_xattr_buf));
634 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
635 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
637 ma->ma_valid |= MA_HSM;
638 else if (rc2 < 0 && rc2 != -ENODATA)
642 #ifdef CONFIG_FS_POSIX_ACL
643 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
644 buf->lb_buf = ma->ma_acl;
645 buf->lb_len = ma->ma_acl_size;
646 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
648 ma->ma_acl_size = rc2;
649 ma->ma_valid |= MA_ACL_DEF;
650 } else if (rc2 == -ENODATA) {
659 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
660 rc, ma->ma_valid, ma->ma_lmm);
664 static int mdt_getattr_internal(struct mdt_thread_info *info,
665 struct mdt_object *o, int ma_need)
667 struct md_object *next = mdt_object_child(o);
668 const struct mdt_body *reqbody = info->mti_body;
669 struct ptlrpc_request *req = mdt_info_req(info);
670 struct md_attr *ma = &info->mti_attr;
671 struct lu_attr *la = &ma->ma_attr;
672 struct req_capsule *pill = info->mti_pill;
673 const struct lu_env *env = info->mti_env;
674 struct mdt_body *repbody;
675 struct lu_buf *buffer = &info->mti_buf;
680 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
681 RETURN(err_serious(-ENOMEM));
683 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
687 if (mdt_object_remote(o)) {
688 /* This object is located on remote node.*/
689 repbody->fid1 = *mdt_object_fid(o);
690 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
694 buffer->lb_len = reqbody->eadatasize;
695 if (buffer->lb_len > 0)
696 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
698 buffer->lb_buf = NULL;
700 /* If it is dir object and client require MEA, then we got MEA */
701 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
702 reqbody->valid & OBD_MD_MEA) {
703 /* Assumption: MDT_MD size is enough for lmv size. */
704 ma->ma_lmv = buffer->lb_buf;
705 ma->ma_lmv_size = buffer->lb_len;
706 ma->ma_need = MA_LMV | MA_INODE;
708 ma->ma_lmm = buffer->lb_buf;
709 ma->ma_lmm_size = buffer->lb_len;
710 ma->ma_need = MA_LOV | MA_INODE | MA_HSM;
713 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
714 reqbody->valid & OBD_MD_FLDIREA &&
715 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
716 /* get default stripe info for this dir. */
717 ma->ma_need |= MA_LOV_DEF;
719 ma->ma_need |= ma_need;
720 if (ma->ma_need & MA_SOM)
721 ma->ma_som = &info->mti_u.som.data;
723 rc = mdt_attr_get_complex(info, o, ma);
725 CERROR("getattr error for "DFID": %d\n",
726 PFID(mdt_object_fid(o)), rc);
730 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
732 /* the Lustre protocol supposes to return default striping
733 * on the user-visible root if explicitly requested */
734 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
735 (ma->ma_need & MA_LOV_DEF && is_root) && (ma->ma_need & MA_LOV)) {
736 struct lu_fid rootfid;
737 struct mdt_object *root;
738 struct mdt_device *mdt = info->mti_mdt;
740 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
743 root = mdt_object_find(env, mdt, &rootfid);
745 RETURN(PTR_ERR(root));
746 rc = mdt_attr_get_lov(info, root, ma);
747 mdt_object_put(info->mti_env, root);
749 CERROR("getattr error for "DFID": %d\n",
750 PFID(mdt_object_fid(o)), rc);
755 if (likely(ma->ma_valid & MA_INODE))
756 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
760 if (mdt_body_has_lov(la, reqbody)) {
761 if (ma->ma_valid & MA_LOV) {
762 LASSERT(ma->ma_lmm_size);
763 mdt_dump_lmm(D_INFO, ma->ma_lmm);
764 repbody->eadatasize = ma->ma_lmm_size;
765 if (S_ISDIR(la->la_mode))
766 repbody->valid |= OBD_MD_FLDIREA;
768 repbody->valid |= OBD_MD_FLEASIZE;
770 if (ma->ma_valid & MA_LMV) {
771 LASSERT(S_ISDIR(la->la_mode));
772 repbody->eadatasize = ma->ma_lmv_size;
773 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
775 } else if (S_ISLNK(la->la_mode) &&
776 reqbody->valid & OBD_MD_LINKNAME) {
777 buffer->lb_buf = ma->ma_lmm;
778 /* eadatasize from client includes NULL-terminator, so
779 * there is no need to read it */
780 buffer->lb_len = reqbody->eadatasize - 1;
781 rc = mo_readlink(env, next, buffer);
782 if (unlikely(rc <= 0)) {
783 CERROR("readlink failed: %d\n", rc);
786 int print_limit = min_t(int, CFS_PAGE_SIZE - 128, rc);
788 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
790 repbody->valid |= OBD_MD_LINKNAME;
791 /* we need to report back size with NULL-terminator
792 * because client expects that */
793 repbody->eadatasize = rc + 1;
794 if (repbody->eadatasize != reqbody->eadatasize)
795 CERROR("Read shorter symlink %d, expected %d\n",
796 rc, reqbody->eadatasize - 1);
798 ((char *)ma->ma_lmm)[rc] = 0;
800 /* If the total CDEBUG() size is larger than a page, it
801 * will print a warning to the console, avoid this by
802 * printing just the last part of the symlink. */
803 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
804 print_limit < rc ? "..." : "", print_limit,
805 (char *)ma->ma_lmm + rc - print_limit, rc);
810 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
811 repbody->max_cookiesize = 0;
812 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
813 repbody->valid |= OBD_MD_FLMODEASIZE;
814 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
815 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
816 repbody->max_cookiesize);
819 if (exp_connect_rmtclient(info->mti_exp) &&
820 reqbody->valid & OBD_MD_FLRMTPERM) {
821 void *buf = req_capsule_server_get(pill, &RMF_ACL);
823 /* mdt_getattr_lock only */
824 rc = mdt_pack_remote_perm(info, o, buf);
826 repbody->valid &= ~OBD_MD_FLRMTPERM;
827 repbody->aclsize = 0;
830 repbody->valid |= OBD_MD_FLRMTPERM;
831 repbody->aclsize = sizeof(struct mdt_remote_perm);
834 #ifdef CONFIG_FS_POSIX_ACL
835 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
836 (reqbody->valid & OBD_MD_FLACL)) {
837 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
838 buffer->lb_len = req_capsule_get_size(pill,
839 &RMF_ACL, RCL_SERVER);
840 if (buffer->lb_len > 0) {
841 rc = mo_xattr_get(env, next, buffer,
842 XATTR_NAME_ACL_ACCESS);
844 if (rc == -ENODATA) {
845 repbody->aclsize = 0;
846 repbody->valid |= OBD_MD_FLACL;
848 } else if (rc == -EOPNOTSUPP) {
851 CERROR("got acl size: %d\n", rc);
854 repbody->aclsize = rc;
855 repbody->valid |= OBD_MD_FLACL;
862 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
863 info->mti_mdt->mdt_opts.mo_mds_capa &&
864 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
865 struct lustre_capa *capa;
867 capa = req_capsule_server_get(pill, &RMF_CAPA1);
869 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
870 rc = mo_capa_get(env, next, capa, 0);
873 repbody->valid |= OBD_MD_FLMDSCAPA;
878 mdt_counter_incr(req, LPROC_MDT_GETATTR);
883 static int mdt_renew_capa(struct mdt_thread_info *info)
885 struct mdt_object *obj = info->mti_object;
886 struct mdt_body *body;
887 struct lustre_capa *capa, *c;
891 /* if object doesn't exist, or server has disabled capability,
892 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
895 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
896 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
899 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
900 LASSERT(body != NULL);
902 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
905 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
909 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
911 body->valid |= OBD_MD_FLOSSCAPA;
915 int mdt_getattr(struct mdt_thread_info *info)
917 struct mdt_object *obj = info->mti_object;
918 struct req_capsule *pill = info->mti_pill;
919 struct mdt_body *reqbody;
920 struct mdt_body *repbody;
925 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
928 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
929 rc = req_capsule_server_pack(pill);
931 RETURN(err_serious(rc));
932 rc = mdt_renew_capa(info);
933 GOTO(out_shrink, rc);
936 LASSERT(obj != NULL);
937 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
939 mode = lu_object_attr(&obj->mot_obj.mo_lu);
941 /* old clients may not report needed easize, use max value then */
942 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
943 reqbody->eadatasize == 0 ?
944 info->mti_mdt->mdt_max_mdsize :
945 reqbody->eadatasize);
947 rc = req_capsule_server_pack(pill);
948 if (unlikely(rc != 0))
949 RETURN(err_serious(rc));
951 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
952 LASSERT(repbody != NULL);
953 repbody->eadatasize = 0;
954 repbody->aclsize = 0;
956 if (reqbody->valid & OBD_MD_FLRMTPERM)
957 rc = mdt_init_ucred(info, reqbody);
959 rc = mdt_check_ucred(info);
961 GOTO(out_shrink, rc);
963 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
966 * Don't check capability at all, because rename might getattr for
967 * remote obj, and at that time no capability is available.
969 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
970 rc = mdt_getattr_internal(info, obj, 0);
971 if (reqbody->valid & OBD_MD_FLRMTPERM)
972 mdt_exit_ucred(info);
975 mdt_client_compatibility(info);
976 rc2 = mdt_fix_reply(info);
982 int mdt_is_subdir(struct mdt_thread_info *info)
984 struct mdt_object *o = info->mti_object;
985 struct req_capsule *pill = info->mti_pill;
986 const struct mdt_body *body = info->mti_body;
987 struct mdt_body *repbody;
993 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
996 * We save last checked parent fid to @repbody->fid1 for remote
999 LASSERT(fid_is_sane(&body->fid2));
1000 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
1001 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1002 &body->fid2, &repbody->fid1);
1003 if (rc == 0 || rc == -EREMOTE)
1004 repbody->valid |= OBD_MD_FLID;
1009 static int mdt_raw_lookup(struct mdt_thread_info *info,
1010 struct mdt_object *parent,
1011 const struct lu_name *lname,
1012 struct ldlm_reply *ldlm_rep)
1014 struct md_object *next = mdt_object_child(info->mti_object);
1015 const struct mdt_body *reqbody = info->mti_body;
1016 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1017 struct mdt_body *repbody;
1021 if (reqbody->valid != OBD_MD_FLID)
1024 LASSERT(!info->mti_cross_ref);
1026 /* Only got the fid of this obj by name */
1027 fid_zero(child_fid);
1028 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1031 /* XXX is raw_lookup possible as intent operation? */
1034 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1037 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1039 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1042 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1043 repbody->fid1 = *child_fid;
1044 repbody->valid = OBD_MD_FLID;
1050 * UPDATE lock should be taken against parent, and be release before exit;
1051 * child_bits lock should be taken against child, and be returned back:
1052 * (1)normal request should release the child lock;
1053 * (2)intent request will grant the lock to client.
1055 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1056 struct mdt_lock_handle *lhc,
1058 struct ldlm_reply *ldlm_rep)
1060 struct ptlrpc_request *req = mdt_info_req(info);
1061 struct mdt_body *reqbody = NULL;
1062 struct mdt_object *parent = info->mti_object;
1063 struct mdt_object *child;
1064 struct md_object *next = mdt_object_child(parent);
1065 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1066 struct lu_name *lname = NULL;
1067 const char *name = NULL;
1069 struct mdt_lock_handle *lhp = NULL;
1070 struct ldlm_lock *lock;
1071 struct ldlm_res_id *res_id;
1078 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1079 LASSERT(ergo(is_resent,
1080 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1082 LASSERT(parent != NULL);
1083 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
1085 RETURN(err_serious(-EFAULT));
1087 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
1089 if (!info->mti_cross_ref) {
1091 * XXX: Check for "namelen == 0" is for getattr by fid
1092 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1093 * that is the name must contain at least one character and
1094 * the terminating '\0'
1097 reqbody = req_capsule_client_get(info->mti_pill,
1099 if (unlikely(reqbody == NULL))
1100 RETURN(err_serious(-EFAULT));
1102 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1103 RETURN(err_serious(-EINVAL));
1106 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1108 PFID(mdt_object_fid(parent)),
1109 PFID(&reqbody->fid2), ldlm_rep);
1111 lname = mdt_name(info->mti_env, (char *)name, namelen);
1112 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
1113 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1117 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1119 if (unlikely(!mdt_object_exists(parent))) {
1120 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1121 &parent->mot_obj.mo_lu,
1122 "Parent doesn't exist!\n");
1124 } else if (!info->mti_cross_ref) {
1125 LASSERTF(!mdt_object_remote(parent),
1126 "Parent "DFID" is on remote server\n",
1127 PFID(mdt_object_fid(parent)));
1130 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1138 if (info->mti_cross_ref) {
1139 /* Only getattr on the child. Parent is on another node. */
1140 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1142 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1143 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1146 /* Do not take lock for resent case. */
1147 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1148 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1149 lhc->mlh_reg_lh.cookie);
1150 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1151 &lock->l_resource->lr_name));
1152 LDLM_LOCK_PUT(lock);
1155 mdt_lock_handle_init(lhc);
1156 mdt_lock_reg_init(lhc, LCK_PR);
1159 * Object's name is on another MDS, no lookup lock is
1160 * needed here but update is.
1162 child_bits &= ~MDS_INODELOCK_LOOKUP;
1163 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1165 rc = mdt_object_lock(info, child, lhc, child_bits,
1169 /* Finally, we can get attr for child. */
1170 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1172 rc = mdt_getattr_internal(info, child, 0);
1173 if (unlikely(rc != 0))
1174 mdt_object_unlock(info, child, lhc, 1);
1180 /* step 1: lock parent only if parent is a directory */
1181 if (S_ISDIR(lu_object_attr(&parent->mot_obj.mo_lu))) {
1182 lhp = &info->mti_lh[MDT_LH_PARENT];
1183 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
1184 rc = mdt_object_lock(info, parent, lhp,
1185 MDS_INODELOCK_UPDATE,
1187 if (unlikely(rc != 0))
1191 /* step 2: lookup child's fid by name */
1192 fid_zero(child_fid);
1193 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1198 mdt_set_disposition(info, ldlm_rep,
1200 GOTO(out_parent, rc);
1202 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1204 *child_fid = reqbody->fid2;
1205 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1209 *step 3: find the child object by fid & lock it.
1210 * regardless if it is local or remote.
1212 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1214 if (unlikely(IS_ERR(child)))
1215 GOTO(out_parent, rc = PTR_ERR(child));
1217 /* Do not take lock for resent case. */
1218 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1219 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1220 lhc->mlh_reg_lh.cookie);
1222 res_id = &lock->l_resource->lr_name;
1223 if (!fid_res_name_eq(mdt_object_fid(child),
1224 &lock->l_resource->lr_name)) {
1225 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1226 &lock->l_resource->lr_name),
1227 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1228 (unsigned long)res_id->name[0],
1229 (unsigned long)res_id->name[1],
1230 (unsigned long)res_id->name[2],
1231 PFID(mdt_object_fid(parent)));
1232 CWARN("Although resent, but still not get child lock"
1233 "parent:"DFID" child:"DFID"\n",
1234 PFID(mdt_object_fid(parent)),
1235 PFID(mdt_object_fid(child)));
1236 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1237 LDLM_LOCK_PUT(lock);
1240 LDLM_LOCK_PUT(lock);
1243 bool try_layout = false;
1246 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1247 mdt_lock_handle_init(lhc);
1248 mdt_lock_reg_init(lhc, LCK_PR);
1250 if (!mdt_object_exists(child)) {
1251 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1252 &child->mot_obj.mo_lu,
1253 "Object doesn't exist!\n");
1254 GOTO(out_child, rc = -ENOENT);
1257 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1258 mdt_object_exists(child) && !mdt_object_remote(child)) {
1259 struct md_attr *ma = &info->mti_attr;
1262 ma->ma_need = MA_INODE;
1263 rc = mdt_attr_get_complex(info, child, ma);
1264 if (unlikely(rc != 0))
1265 GOTO(out_child, rc);
1267 /* If the file has not been changed for some time, we
1268 * return not only a LOOKUP lock, but also an UPDATE
1269 * lock and this might save us RPC on later STAT. For
1270 * directories, it also let negative dentry starts
1271 * working for this dir. */
1272 if (ma->ma_valid & MA_INODE &&
1273 ma->ma_attr.la_valid & LA_CTIME &&
1274 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1275 ma->ma_attr.la_ctime < cfs_time_current_sec())
1276 child_bits |= MDS_INODELOCK_UPDATE;
1279 /* layout lock must be granted in a best-effort way
1280 * for IT operations */
1281 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1282 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1283 exp_connect_layout(info->mti_exp) &&
1284 S_ISREG(lu_object_attr(&child->mot_obj.mo_lu)) &&
1286 /* try to grant layout lock for regular file. */
1292 child_bits |= MDS_INODELOCK_LAYOUT;
1293 /* try layout lock, it may fail to be granted due to
1294 * contention at LOOKUP or UPDATE */
1295 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1297 child_bits &= ~MDS_INODELOCK_LAYOUT;
1298 LASSERT(child_bits != 0);
1299 rc = mdt_object_lock(info, child, lhc,
1300 child_bits, MDT_CROSS_LOCK);
1305 rc = mdt_object_lock(info, child, lhc, child_bits,
1308 if (unlikely(rc != 0))
1309 GOTO(out_child, rc);
1312 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1313 /* Get MA_SOM attributes if update lock is given. */
1315 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1316 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1319 /* finally, we can get attr for child. */
1320 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1321 rc = mdt_getattr_internal(info, child, ma_need);
1322 if (unlikely(rc != 0)) {
1323 mdt_object_unlock(info, child, lhc, 1);
1325 /* Debugging code. */
1326 res_id = &lock->l_resource->lr_name;
1327 LDLM_DEBUG(lock, "Returning lock to client");
1328 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1329 &lock->l_resource->lr_name),
1330 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1331 (unsigned long)res_id->name[0],
1332 (unsigned long)res_id->name[1],
1333 (unsigned long)res_id->name[2],
1334 PFID(mdt_object_fid(child)));
1335 if (mdt_object_exists(child) && !mdt_object_remote(child))
1336 mdt_pack_size2body(info, child);
1339 LDLM_LOCK_PUT(lock);
1343 mdt_object_put(info->mti_env, child);
1346 mdt_object_unlock(info, parent, lhp, 1);
1350 /* normal handler: should release the child lock */
1351 int mdt_getattr_name(struct mdt_thread_info *info)
1353 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1354 struct mdt_body *reqbody;
1355 struct mdt_body *repbody;
1359 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1360 LASSERT(reqbody != NULL);
1361 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1362 LASSERT(repbody != NULL);
1364 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1365 repbody->eadatasize = 0;
1366 repbody->aclsize = 0;
1368 rc = mdt_init_ucred(info, reqbody);
1370 GOTO(out_shrink, rc);
1372 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1373 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1374 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1375 lhc->mlh_reg_lh.cookie = 0;
1377 mdt_exit_ucred(info);
1380 mdt_client_compatibility(info);
1381 rc2 = mdt_fix_reply(info);
1387 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1388 void *karg, void *uarg);
1390 int mdt_set_info(struct mdt_thread_info *info)
1392 struct ptlrpc_request *req = mdt_info_req(info);
1395 int keylen, vallen, rc = 0;
1398 rc = req_capsule_server_pack(info->mti_pill);
1402 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1404 DEBUG_REQ(D_HA, req, "no set_info key");
1408 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1411 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1413 DEBUG_REQ(D_HA, req, "no set_info val");
1417 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1420 /* Swab any part of val you need to here */
1421 if (KEY_IS(KEY_READ_ONLY)) {
1423 lustre_msg_set_status(req->rq_repmsg, 0);
1425 spin_lock(&req->rq_export->exp_lock);
1427 *exp_connect_flags_ptr(req->rq_export) |=
1430 *exp_connect_flags_ptr(req->rq_export) &=
1431 ~OBD_CONNECT_RDONLY;
1432 spin_unlock(&req->rq_export->exp_lock);
1434 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1435 struct changelog_setinfo *cs =
1436 (struct changelog_setinfo *)val;
1437 if (vallen != sizeof(*cs)) {
1438 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1441 if (ptlrpc_req_need_swab(req)) {
1442 __swab64s(&cs->cs_recno);
1443 __swab32s(&cs->cs_id);
1446 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1448 lustre_msg_set_status(req->rq_repmsg, rc);
1457 * Top-level handler for MDT connection requests.
1459 int mdt_connect(struct mdt_thread_info *info)
1462 struct obd_connect_data *reply;
1463 struct obd_export *exp;
1464 struct ptlrpc_request *req = mdt_info_req(info);
1466 rc = target_handle_connect(req);
1468 return err_serious(rc);
1470 LASSERT(req->rq_export != NULL);
1471 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1472 rc = mdt_init_sec_level(info);
1474 obd_disconnect(class_export_get(req->rq_export));
1478 /* To avoid exposing partially initialized connection flags, changes up
1479 * to this point have been staged in reply->ocd_connect_flags. Now that
1480 * connection handling has completed successfully, atomically update
1481 * the connect flags in the shared export data structure. LU-1623 */
1482 reply = req_capsule_server_get(info->mti_pill, &RMF_CONNECT_DATA);
1483 exp = req->rq_export;
1484 spin_lock(&exp->exp_lock);
1485 *exp_connect_flags_ptr(exp) = reply->ocd_connect_flags;
1486 spin_unlock(&exp->exp_lock);
1488 rc = mdt_init_idmap(info);
1490 obd_disconnect(class_export_get(req->rq_export));
1495 int mdt_disconnect(struct mdt_thread_info *info)
1500 rc = target_handle_disconnect(mdt_info_req(info));
1502 rc = err_serious(rc);
1506 static int mdt_sendpage(struct mdt_thread_info *info,
1507 struct lu_rdpg *rdpg, int nob)
1509 struct ptlrpc_request *req = mdt_info_req(info);
1510 struct obd_export *exp = req->rq_export;
1511 struct ptlrpc_bulk_desc *desc;
1512 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1519 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1524 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1525 /* old client requires reply size in it's PAGE_SIZE,
1526 * which is rdpg->rp_count */
1527 nob = rdpg->rp_count;
1529 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1530 i++, tmpcount -= tmpsize) {
1531 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1532 ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
1535 LASSERT(desc->bd_nob == nob);
1536 rc = target_bulk_io(exp, desc, lwi);
1537 ptlrpc_free_bulk_pin(desc);
1541 int mdt_readpage(struct mdt_thread_info *info)
1543 struct mdt_object *object = info->mti_object;
1544 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1545 struct mdt_body *reqbody;
1546 struct mdt_body *repbody;
1551 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1552 RETURN(err_serious(-ENOMEM));
1554 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1555 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1556 if (reqbody == NULL || repbody == NULL)
1557 RETURN(err_serious(-EFAULT));
1560 * prepare @rdpg before calling lower layers and transfer itself. Here
1561 * reqbody->size contains offset of where to start to read and
1562 * reqbody->nlink contains number bytes to read.
1564 rdpg->rp_hash = reqbody->size;
1565 if (rdpg->rp_hash != reqbody->size) {
1566 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1567 rdpg->rp_hash, reqbody->size);
1571 rdpg->rp_attrs = reqbody->mode;
1572 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_64BITHASH)
1573 rdpg->rp_attrs |= LUDA_64BITHASH;
1574 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1575 exp_brw_size(info->mti_exp));
1576 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1) >>
1578 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1579 if (rdpg->rp_pages == NULL)
1582 for (i = 0; i < rdpg->rp_npages; ++i) {
1583 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1584 if (rdpg->rp_pages[i] == NULL)
1585 GOTO(free_rdpg, rc = -ENOMEM);
1588 /* call lower layers to fill allocated pages with directory data */
1589 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1591 GOTO(free_rdpg, rc);
1593 /* send pages to client */
1594 rc = mdt_sendpage(info, rdpg, rc);
1599 for (i = 0; i < rdpg->rp_npages; i++)
1600 if (rdpg->rp_pages[i] != NULL)
1601 cfs_free_page(rdpg->rp_pages[i]);
1602 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1604 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1610 static int mdt_reint_internal(struct mdt_thread_info *info,
1611 struct mdt_lock_handle *lhc,
1614 struct req_capsule *pill = info->mti_pill;
1615 struct mdt_body *repbody;
1620 rc = mdt_reint_unpack(info, op);
1622 CERROR("Can't unpack reint, rc %d\n", rc);
1623 RETURN(err_serious(rc));
1626 /* for replay (no_create) lmm is not needed, client has it already */
1627 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1628 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1629 info->mti_rr.rr_eadatalen);
1631 /* llog cookies are always 0, the field is kept for compatibility */
1632 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1633 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1635 rc = req_capsule_server_pack(pill);
1637 CERROR("Can't pack response, rc %d\n", rc);
1638 RETURN(err_serious(rc));
1641 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1642 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1644 repbody->eadatasize = 0;
1645 repbody->aclsize = 0;
1648 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1650 /* for replay no cookkie / lmm need, because client have this already */
1651 if (info->mti_spec.no_create)
1652 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1653 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1655 rc = mdt_init_ucred_reint(info);
1657 GOTO(out_shrink, rc);
1659 rc = mdt_fix_attr_ucred(info, op);
1661 GOTO(out_ucred, rc = err_serious(rc));
1663 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1664 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1665 GOTO(out_ucred, rc);
1667 rc = mdt_reint_rec(info, lhc);
1670 mdt_exit_ucred(info);
1672 mdt_client_compatibility(info);
1673 rc2 = mdt_fix_reply(info);
1679 static long mdt_reint_opcode(struct mdt_thread_info *info,
1680 const struct req_format **fmt)
1682 struct mdt_rec_reint *rec;
1685 opc = err_serious(-EFAULT);
1686 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1688 opc = rec->rr_opcode;
1689 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1690 if (opc < REINT_MAX && fmt[opc] != NULL)
1691 req_capsule_extend(info->mti_pill, fmt[opc]);
1693 CERROR("Unsupported opc: %ld\n", opc);
1694 opc = err_serious(opc);
1700 int mdt_reint(struct mdt_thread_info *info)
1705 static const struct req_format *reint_fmts[REINT_MAX] = {
1706 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1707 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1708 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1709 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1710 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1711 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1712 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1713 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK
1718 opc = mdt_reint_opcode(info, reint_fmts);
1721 * No lock possible here from client to pass it to reint code
1724 rc = mdt_reint_internal(info, NULL, opc);
1729 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1733 /* this should sync the whole device */
1734 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1736 struct dt_device *dt = mdt->mdt_bottom;
1740 rc = dt->dd_ops->dt_sync(env, dt);
1744 /* this should sync this object */
1745 static int mdt_object_sync(struct mdt_thread_info *info)
1747 struct md_object *next;
1751 if (!mdt_object_exists(info->mti_object)) {
1752 CWARN("Non existing object "DFID"!\n",
1753 PFID(mdt_object_fid(info->mti_object)));
1756 next = mdt_object_child(info->mti_object);
1757 rc = mo_object_sync(info->mti_env, next);
1762 int mdt_sync(struct mdt_thread_info *info)
1764 struct ptlrpc_request *req = mdt_info_req(info);
1765 struct req_capsule *pill = info->mti_pill;
1766 struct mdt_body *body;
1770 /* The fid may be zero, so we req_capsule_set manually */
1771 req_capsule_set(pill, &RQF_MDS_SYNC);
1773 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1775 RETURN(err_serious(-EINVAL));
1777 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1778 RETURN(err_serious(-ENOMEM));
1780 if (fid_seq(&body->fid1) == 0) {
1781 /* sync the whole device */
1782 rc = req_capsule_server_pack(pill);
1784 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1786 rc = err_serious(rc);
1788 /* sync an object */
1789 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1791 rc = mdt_object_sync(info);
1793 const struct lu_fid *fid;
1794 struct lu_attr *la = &info->mti_attr.ma_attr;
1796 info->mti_attr.ma_need = MA_INODE;
1797 info->mti_attr.ma_valid = 0;
1798 rc = mdt_attr_get_complex(info, info->mti_object,
1801 body = req_capsule_server_get(pill,
1803 fid = mdt_object_fid(info->mti_object);
1804 mdt_pack_attr2body(info, body, la, fid);
1808 rc = err_serious(rc);
1811 mdt_counter_incr(req, LPROC_MDT_SYNC);
1817 * Quotacheck handler.
1818 * in-kernel quotacheck isn't supported any more.
1820 int mdt_quotacheck(struct mdt_thread_info *info)
1822 struct obd_quotactl *oqctl;
1826 oqctl = req_capsule_client_get(info->mti_pill, &RMF_OBD_QUOTACTL);
1828 RETURN(err_serious(-EPROTO));
1830 rc = req_capsule_server_pack(info->mti_pill);
1832 RETURN(err_serious(rc));
1834 /* deprecated, not used any more */
1835 RETURN(-EOPNOTSUPP);
1839 * Handle quota control requests to consult current usage/limit, but also
1840 * to configure quota enforcement
1842 int mdt_quotactl(struct mdt_thread_info *info)
1844 struct obd_export *exp = info->mti_exp;
1845 struct req_capsule *pill = info->mti_pill;
1846 struct obd_quotactl *oqctl, *repoqc;
1848 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
1851 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1853 RETURN(err_serious(-EPROTO));
1855 rc = req_capsule_server_pack(pill);
1857 RETURN(err_serious(rc));
1859 switch (oqctl->qc_cmd) {
1861 case LUSTRE_Q_INVALIDATE:
1862 case LUSTRE_Q_FINVALIDATE:
1866 /* deprecated, not used any more */
1867 RETURN(-EOPNOTSUPP);
1868 /* master quotactl */
1874 RETURN(-EOPNOTSUPP);
1875 /* slave quotactl */
1880 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1884 /* map uid/gid for remote client */
1886 if (exp_connect_rmtclient(exp)) {
1887 struct lustre_idmap_table *idmap;
1889 idmap = mdt_req2med(mdt_info_req(info))->med_idmap;
1891 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1892 oqctl->qc_cmd != Q_GETINFO))
1895 if (oqctl->qc_type == USRQUOTA)
1896 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1898 else if (oqctl->qc_type == GRPQUOTA)
1899 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1904 if (id == CFS_IDMAP_NOTFOUND) {
1905 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
1910 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1912 RETURN(err_serious(-EFAULT));
1914 if (oqctl->qc_id != id)
1915 swap(oqctl->qc_id, id);
1917 switch (oqctl->qc_cmd) {
1923 /* forward quotactl request to QMT */
1924 rc = qmt_hdls.qmth_quotactl(info->mti_env, qmt, oqctl);
1929 /* slave quotactl */
1930 rc = lquotactl_slv(info->mti_env, info->mti_mdt->mdt_bottom,
1935 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1939 if (oqctl->qc_id != id)
1940 swap(oqctl->qc_id, id);
1947 * OBD PING and other handlers.
1949 int mdt_obd_ping(struct mdt_thread_info *info)
1954 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1956 rc = target_handle_ping(mdt_info_req(info));
1958 rc = err_serious(rc);
1963 * OBD_IDX_READ handler
1965 int mdt_obd_idx_read(struct mdt_thread_info *info)
1967 struct mdt_device *mdt = info->mti_mdt;
1968 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1969 struct idx_info *req_ii, *rep_ii;
1973 memset(rdpg, 0, sizeof(*rdpg));
1974 req_capsule_set(info->mti_pill, &RQF_OBD_IDX_READ);
1976 /* extract idx_info buffer from request & reply */
1977 req_ii = req_capsule_client_get(info->mti_pill, &RMF_IDX_INFO);
1978 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1979 RETURN(err_serious(-EPROTO));
1981 rc = req_capsule_server_pack(info->mti_pill);
1983 RETURN(err_serious(rc));
1985 rep_ii = req_capsule_server_get(info->mti_pill, &RMF_IDX_INFO);
1987 RETURN(err_serious(-EFAULT));
1988 rep_ii->ii_magic = IDX_INFO_MAGIC;
1990 /* extract hash to start with */
1991 rdpg->rp_hash = req_ii->ii_hash_start;
1993 /* extract requested attributes */
1994 rdpg->rp_attrs = req_ii->ii_attrs;
1996 /* check that fid packed in request is valid and supported */
1997 if (!fid_is_sane(&req_ii->ii_fid))
1999 rep_ii->ii_fid = req_ii->ii_fid;
2002 rep_ii->ii_flags = req_ii->ii_flags;
2004 /* compute number of pages to allocate, ii_count is the number of 4KB
2006 if (req_ii->ii_count <= 0)
2007 GOTO(out, rc = -EFAULT);
2008 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
2009 exp_brw_size(info->mti_exp));
2010 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE -1) >> CFS_PAGE_SHIFT;
2012 /* allocate pages to store the containers */
2013 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2014 if (rdpg->rp_pages == NULL)
2015 GOTO(out, rc = -ENOMEM);
2016 for (i = 0; i < rdpg->rp_npages; i++) {
2017 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
2018 if (rdpg->rp_pages[i] == NULL)
2019 GOTO(out, rc = -ENOMEM);
2022 /* populate pages with key/record pairs */
2023 rc = dt_index_read(info->mti_env, mdt->mdt_bottom, rep_ii, rdpg);
2027 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
2028 "asked %d > %d\n", rc, rdpg->rp_count);
2030 /* send pages to client */
2031 rc = mdt_sendpage(info, rdpg, rc);
2035 if (rdpg->rp_pages) {
2036 for (i = 0; i < rdpg->rp_npages; i++)
2037 if (rdpg->rp_pages[i])
2038 cfs_free_page(rdpg->rp_pages[i]);
2039 OBD_FREE(rdpg->rp_pages,
2040 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2045 int mdt_obd_log_cancel(struct mdt_thread_info *info)
2047 return err_serious(-EOPNOTSUPP);
2050 int mdt_obd_qc_callback(struct mdt_thread_info *info)
2052 return err_serious(-EOPNOTSUPP);
2059 /** clone llog ctxt from child (mdd)
2060 * This allows remote llog (replicator) access.
2061 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2062 * context was originally set up, or we can handle them directly.
2063 * I choose the latter, but that means I need any llog
2064 * contexts set up by child to be accessable by the mdt. So we clone the
2065 * context into our context list here.
2067 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2070 struct md_device *next = mdt->mdt_child;
2071 struct llog_ctxt *ctxt;
2074 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2077 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2078 if (rc || ctxt == NULL) {
2082 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2084 CERROR("Can't set mdt ctxt %d\n", rc);
2089 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2090 struct mdt_device *mdt, int idx)
2092 struct llog_ctxt *ctxt;
2094 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2097 /* Put once for the get we just did, and once for the clone */
2098 llog_ctxt_put(ctxt);
2099 llog_ctxt_put(ctxt);
2103 int mdt_llog_create(struct mdt_thread_info *info)
2107 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
2108 rc = llog_origin_handle_open(mdt_info_req(info));
2109 return (rc < 0 ? err_serious(rc) : rc);
2112 int mdt_llog_destroy(struct mdt_thread_info *info)
2116 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
2117 rc = llog_origin_handle_destroy(mdt_info_req(info));
2118 return (rc < 0 ? err_serious(rc) : rc);
2121 int mdt_llog_read_header(struct mdt_thread_info *info)
2125 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
2126 rc = llog_origin_handle_read_header(mdt_info_req(info));
2127 return (rc < 0 ? err_serious(rc) : rc);
2130 int mdt_llog_next_block(struct mdt_thread_info *info)
2134 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
2135 rc = llog_origin_handle_next_block(mdt_info_req(info));
2136 return (rc < 0 ? err_serious(rc) : rc);
2139 int mdt_llog_prev_block(struct mdt_thread_info *info)
2143 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
2144 rc = llog_origin_handle_prev_block(mdt_info_req(info));
2145 return (rc < 0 ? err_serious(rc) : rc);
2153 static struct ldlm_callback_suite cbs = {
2154 .lcs_completion = ldlm_server_completion_ast,
2155 .lcs_blocking = ldlm_server_blocking_ast,
2156 .lcs_glimpse = ldlm_server_glimpse_ast
2159 int mdt_enqueue(struct mdt_thread_info *info)
2161 struct ptlrpc_request *req;
2165 * info->mti_dlm_req already contains swapped and (if necessary)
2166 * converted dlm request.
2168 LASSERT(info->mti_dlm_req != NULL);
2170 req = mdt_info_req(info);
2171 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2172 req, info->mti_dlm_req, &cbs);
2173 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2174 return rc ? err_serious(rc) : req->rq_status;
2177 int mdt_convert(struct mdt_thread_info *info)
2180 struct ptlrpc_request *req;
2182 LASSERT(info->mti_dlm_req);
2183 req = mdt_info_req(info);
2184 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2185 return rc ? err_serious(rc) : req->rq_status;
2188 int mdt_bl_callback(struct mdt_thread_info *info)
2190 CERROR("bl callbacks should not happen on MDS\n");
2192 return err_serious(-EOPNOTSUPP);
2195 int mdt_cp_callback(struct mdt_thread_info *info)
2197 CERROR("cp callbacks should not happen on MDS\n");
2199 return err_serious(-EOPNOTSUPP);
2203 * sec context handlers
2205 int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2209 rc = mdt_handle_idmap(info);
2212 struct ptlrpc_request *req = mdt_info_req(info);
2215 opc = lustre_msg_get_opc(req->rq_reqmsg);
2216 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2217 sptlrpc_svc_ctx_invalidate(req);
2220 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2226 * quota request handlers
2228 int mdt_quota_dqacq(struct mdt_thread_info *info)
2230 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
2235 RETURN(err_serious(-EOPNOTSUPP));
2237 rc = qmt_hdls.qmth_dqacq(info->mti_env, qmt, mdt_info_req(info));
2241 static struct mdt_object *mdt_obj(struct lu_object *o)
2243 LASSERT(lu_device_is_mdt(o->lo_dev));
2244 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2247 struct mdt_object *mdt_object_new(const struct lu_env *env,
2248 struct mdt_device *d,
2249 const struct lu_fid *f)
2251 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2252 struct lu_object *o;
2253 struct mdt_object *m;
2256 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2257 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, &conf);
2258 if (unlikely(IS_ERR(o)))
2259 m = (struct mdt_object *)o;
2265 struct mdt_object *mdt_object_find(const struct lu_env *env,
2266 struct mdt_device *d,
2267 const struct lu_fid *f)
2269 struct lu_object *o;
2270 struct mdt_object *m;
2273 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2274 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2275 if (unlikely(IS_ERR(o)))
2276 m = (struct mdt_object *)o;
2283 * Asyncronous commit for mdt device.
2285 * Pass asynchonous commit call down the MDS stack.
2287 * \param env environment
2288 * \param mdt the mdt device
2290 static void mdt_device_commit_async(const struct lu_env *env,
2291 struct mdt_device *mdt)
2293 struct dt_device *dt = mdt->mdt_bottom;
2296 rc = dt->dd_ops->dt_commit_async(env, dt);
2297 if (unlikely(rc != 0))
2298 CWARN("async commit start failed with rc = %d", rc);
2302 * Mark the lock as "synchonous".
2304 * Mark the lock to deffer transaction commit to the unlock time.
2306 * \param lock the lock to mark as "synchonous"
2308 * \see mdt_is_lock_sync
2309 * \see mdt_save_lock
2311 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2313 lock->l_ast_data = (void*)1;
2317 * Check whehter the lock "synchonous" or not.
2319 * \param lock the lock to check
2320 * \retval 1 the lock is "synchonous"
2321 * \retval 0 the lock isn't "synchronous"
2323 * \see mdt_set_lock_sync
2324 * \see mdt_save_lock
2326 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2328 return lock->l_ast_data != NULL;
2332 * Blocking AST for mdt locks.
2334 * Starts transaction commit if in case of COS lock conflict or
2335 * deffers such a commit to the mdt_save_lock.
2337 * \param lock the lock which blocks a request or cancelling lock
2338 * \param desc unused
2339 * \param data unused
2340 * \param flag indicates whether this cancelling or blocking callback
2342 * \see ldlm_blocking_ast_nocheck
2344 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2345 void *data, int flag)
2347 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2348 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2352 if (flag == LDLM_CB_CANCELING)
2354 lock_res_and_lock(lock);
2355 if (lock->l_blocking_ast != mdt_blocking_ast) {
2356 unlock_res_and_lock(lock);
2359 if (mdt_cos_is_enabled(mdt) &&
2360 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2361 lock->l_blocking_lock != NULL &&
2362 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2363 mdt_set_lock_sync(lock);
2365 rc = ldlm_blocking_ast_nocheck(lock);
2367 /* There is no lock conflict if l_blocking_lock == NULL,
2368 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2369 * when the last reference to a local lock was released */
2370 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2373 rc = lu_env_init(&env, LCT_LOCAL);
2374 if (unlikely(rc != 0))
2375 CWARN("lu_env initialization failed with rc = %d,"
2376 "cannot start asynchronous commit\n", rc);
2378 mdt_device_commit_async(&env, mdt);
2384 int mdt_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2385 void *data, int flag)
2387 struct lustre_handle lockh;
2391 case LDLM_CB_BLOCKING:
2392 ldlm_lock2handle(lock, &lockh);
2393 rc = ldlm_cli_cancel(&lockh);
2395 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2399 case LDLM_CB_CANCELING:
2400 LDLM_DEBUG(lock, "Revoke remote lock\n");
2408 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2409 struct mdt_object *o, struct lustre_handle *lh,
2410 ldlm_mode_t mode, __u64 ibits)
2412 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2413 ldlm_policy_data_t *policy = &mti->mti_policy;
2417 LASSERT(mdt_object_remote(o));
2419 LASSERT((ibits & MDS_INODELOCK_UPDATE));
2421 memset(einfo, 0, sizeof(*einfo));
2422 einfo->ei_type = LDLM_IBITS;
2423 einfo->ei_mode = mode;
2424 einfo->ei_cb_bl = mdt_md_blocking_ast;
2425 einfo->ei_cb_cp = ldlm_completion_ast;
2427 memset(policy, 0, sizeof(*policy));
2428 policy->l_inodebits.bits = ibits;
2430 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2435 static int mdt_object_lock0(struct mdt_thread_info *info, struct mdt_object *o,
2436 struct mdt_lock_handle *lh, __u64 ibits,
2437 bool nonblock, int locality)
2439 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2440 ldlm_policy_data_t *policy = &info->mti_policy;
2441 struct ldlm_res_id *res_id = &info->mti_res_id;
2446 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2447 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2448 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2449 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2451 if (mdt_object_remote(o)) {
2452 if (locality == MDT_CROSS_LOCK) {
2453 ibits &= ~(MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM);
2454 ibits |= MDS_INODELOCK_LOOKUP;
2457 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM)),
2458 "%s: wrong bit "LPX64" for remote obj "DFID"\n",
2459 mdt_obd_name(info->mti_mdt), ibits,
2460 PFID(mdt_object_fid(o)));
2461 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2463 /* No PDO lock on remote object */
2464 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2467 if (lh->mlh_type == MDT_PDO_LOCK) {
2468 /* check for exists after object is locked */
2469 if (mdt_object_exists(o) == 0) {
2470 /* Non-existent object shouldn't have PDO lock */
2473 /* Non-dir object shouldn't have PDO lock */
2474 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2479 memset(policy, 0, sizeof(*policy));
2480 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2482 dlmflags = LDLM_FL_ATOMIC_CB;
2484 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2487 * Take PDO lock on whole directory and build correct @res_id for lock
2488 * on part of directory.
2490 if (lh->mlh_pdo_hash != 0) {
2491 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2492 mdt_lock_pdo_mode(info, o, lh);
2493 if (lh->mlh_pdo_mode != LCK_NL) {
2495 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2496 * is never going to be sent to client and we do not
2497 * want it slowed down due to possible cancels.
2499 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2500 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2501 policy, res_id, dlmflags,
2502 &info->mti_exp->exp_handle.h_cookie);
2508 * Finish res_id initializing by name hash marking part of
2509 * directory which is taking modification.
2511 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2514 policy->l_inodebits.bits = ibits;
2517 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2518 * going to be sent to client. If it is - mdt_intent_policy() path will
2519 * fix it up and turn FL_LOCAL flag off.
2521 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2522 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2523 &info->mti_exp->exp_handle.h_cookie);
2525 mdt_object_unlock(info, o, lh, 1);
2526 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2527 lh->mlh_pdo_hash != 0 &&
2528 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2529 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2535 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2536 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2538 return mdt_object_lock0(info, o, lh, ibits, false, locality);
2541 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2542 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2544 struct mdt_lock_handle tmp = *lh;
2547 rc = mdt_object_lock0(info, o, &tmp, ibits, true, locality);
2555 * Save a lock within request object.
2557 * Keep the lock referenced until whether client ACK or transaction
2558 * commit happens or release the lock immediately depending on input
2559 * parameters. If COS is ON, a write lock is converted to COS lock
2562 * \param info thead info object
2563 * \param h lock handle
2564 * \param mode lock mode
2565 * \param decref force immediate lock releasing
2568 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2569 ldlm_mode_t mode, int decref)
2573 if (lustre_handle_is_used(h)) {
2574 if (decref || !info->mti_has_trans ||
2575 !(mode & (LCK_PW | LCK_EX))){
2576 mdt_fid_unlock(h, mode);
2578 struct mdt_device *mdt = info->mti_mdt;
2579 struct ldlm_lock *lock = ldlm_handle2lock(h);
2580 struct ptlrpc_request *req = mdt_info_req(info);
2583 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2585 CDEBUG(D_HA, "request = %p reply state = %p"
2586 " transno = "LPD64"\n",
2587 req, req->rq_reply_state, req->rq_transno);
2588 if (mdt_cos_is_enabled(mdt)) {
2590 ldlm_lock_downgrade(lock, LCK_COS);
2593 ptlrpc_save_lock(req, h, mode, no_ack);
2594 if (mdt_is_lock_sync(lock)) {
2595 CDEBUG(D_HA, "found sync-lock,"
2596 " async commit started\n");
2597 mdt_device_commit_async(info->mti_env,
2600 LDLM_LOCK_PUT(lock);
2609 * Unlock mdt object.
2611 * Immeditely release the regular lock and the PDO lock or save the
2612 * lock in reqeuest and keep them referenced until client ACK or
2613 * transaction commit.
2615 * \param info thread info object
2616 * \param o mdt object
2617 * \param lh mdt lock handle referencing regular and PDO locks
2618 * \param decref force immediate lock releasing
2620 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2621 struct mdt_lock_handle *lh, int decref)
2625 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2626 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2628 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2629 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2634 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2635 const struct lu_fid *f,
2636 struct mdt_lock_handle *lh,
2639 struct mdt_object *o;
2641 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2645 rc = mdt_object_lock(info, o, lh, ibits,
2648 mdt_object_put(info->mti_env, o);
2655 void mdt_object_unlock_put(struct mdt_thread_info * info,
2656 struct mdt_object * o,
2657 struct mdt_lock_handle *lh,
2660 mdt_object_unlock(info, o, lh, decref);
2661 mdt_object_put(info->mti_env, o);
2664 struct mdt_handler *mdt_handler_find(__u32 opc, struct mdt_opc_slice *supported)
2666 struct mdt_opc_slice *s;
2667 struct mdt_handler *h;
2670 for (s = supported; s->mos_hs != NULL; s++) {
2671 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2672 h = s->mos_hs + (opc - s->mos_opc_start);
2673 if (likely(h->mh_opc != 0))
2674 LASSERTF(h->mh_opc == opc,
2675 "opcode mismatch %d != %d\n",
2678 h = NULL; /* unsupported opc */
2685 static int mdt_lock_resname_compat(struct mdt_device *m,
2686 struct ldlm_request *req)
2688 /* XXX something... later. */
2692 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2694 /* XXX something... later. */
2699 * Generic code handling requests that have struct mdt_body passed in:
2701 * - extract mdt_body from request and save it in @info, if present;
2703 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2706 * - if HABEO_CORPUS flag is set for this request type check whether object
2707 * actually exists on storage (lu_object_exists()).
2710 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2712 const struct mdt_body *body;
2713 struct mdt_object *obj;
2714 const struct lu_env *env;
2715 struct req_capsule *pill;
2719 env = info->mti_env;
2720 pill = info->mti_pill;
2722 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2726 if (!(body->valid & OBD_MD_FLID))
2729 if (!fid_is_sane(&body->fid1)) {
2730 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2735 * Do not get size or any capa fields before we check that request
2736 * contains capa actually. There are some requests which do not, for
2737 * instance MDS_IS_SUBDIR.
2739 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2740 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2741 mdt_set_capainfo(info, 0, &body->fid1,
2742 req_capsule_client_get(pill, &RMF_CAPA1));
2744 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2746 if ((flags & HABEO_CORPUS) &&
2747 !mdt_object_exists(obj)) {
2748 mdt_object_put(env, obj);
2749 /* for capability renew ENOENT will be handled in
2751 if (body->valid & OBD_MD_FLOSSCAPA)
2756 info->mti_object = obj;
2765 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2767 struct req_capsule *pill = info->mti_pill;
2771 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2772 rc = mdt_body_unpack(info, flags);
2776 if (rc == 0 && (flags & HABEO_REFERO)) {
2778 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2779 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2780 info->mti_body->eadatasize);
2781 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2782 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2785 rc = req_capsule_server_pack(pill);
2790 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2792 struct md_device *next = m->mdt_child;
2794 return next->md_ops->mdo_init_capa_ctxt(env, next,
2795 m->mdt_opts.mo_mds_capa,
2796 m->mdt_capa_timeout,
2802 * Invoke handler for this request opc. Also do necessary preprocessing
2803 * (according to handler ->mh_flags), and post-processing (setting of
2804 * ->last_{xid,committed}).
2806 static int mdt_req_handle(struct mdt_thread_info *info,
2807 struct mdt_handler *h, struct ptlrpc_request *req)
2809 int rc, serious = 0;
2814 LASSERT(h->mh_act != NULL);
2815 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2816 LASSERT(current->journal_info == NULL);
2819 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2820 * to put same checks into handlers like mdt_close(), mdt_reint(),
2821 * etc., without talking to mdt authors first. Checking same thing
2822 * there again is useless and returning 0 error without packing reply
2823 * is buggy! Handlers either pack reply or return error.
2825 * We return 0 here and do not send any reply in order to emulate
2826 * network failure. Do not send any reply in case any of NET related
2827 * fail_id has occured.
2829 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2833 flags = h->mh_flags;
2834 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2836 if (h->mh_fmt != NULL) {
2837 req_capsule_set(info->mti_pill, h->mh_fmt);
2838 rc = mdt_unpack_req_pack_rep(info, flags);
2841 if (rc == 0 && flags & MUTABOR &&
2842 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
2843 /* should it be rq_status? */
2846 if (rc == 0 && flags & HABEO_CLAVIS) {
2847 struct ldlm_request *dlm_req;
2849 LASSERT(h->mh_fmt != NULL);
2851 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2852 if (dlm_req != NULL) {
2853 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2855 dlm_req->lock_desc.l_policy_data.\
2856 l_inodebits.bits == 0)) {
2858 * Lock without inodebits makes no sense and
2859 * will oops later in ldlm. If client miss to
2860 * set such bits, do not trigger ASSERTION.
2862 * For liblustre flock case, it maybe zero.
2866 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2867 rc = mdt_lock_resname_compat(
2870 info->mti_dlm_req = dlm_req;
2877 /* capability setting changed via /proc, needs reinitialize ctxt */
2878 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2879 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2880 info->mti_mdt->mdt_capa_conf = 0;
2883 if (likely(rc == 0)) {
2885 * Process request, there can be two types of rc:
2886 * 1) errors with msg unpack/pack, other failures outside the
2887 * operation itself. This is counted as serious errors;
2888 * 2) errors during fs operation, should be placed in rq_status
2891 rc = h->mh_act(info);
2893 !req->rq_no_reply && req->rq_reply_state == NULL) {
2894 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2895 "pack reply and returned 0 error\n",
2899 serious = is_serious(rc);
2900 rc = clear_serious(rc);
2904 req->rq_status = rc;
2907 * ELDLM_* codes which > 0 should be in rq_status only as well as
2908 * all non-serious errors.
2910 if (rc > 0 || !serious)
2913 LASSERT(current->journal_info == NULL);
2915 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2916 info->mti_mdt->mdt_opts.mo_compat_resname) {
2917 struct ldlm_reply *dlmrep;
2919 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2921 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2924 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2925 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2926 target_committed_to_req(req);
2928 if (unlikely(req_is_replay(req) &&
2929 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2930 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2934 target_send_reply(req, rc, info->mti_fail_id);
2938 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2940 lh->mlh_type = MDT_NUL_LOCK;
2941 lh->mlh_reg_lh.cookie = 0ull;
2942 lh->mlh_reg_mode = LCK_MINMODE;
2943 lh->mlh_pdo_lh.cookie = 0ull;
2944 lh->mlh_pdo_mode = LCK_MINMODE;
2945 lh->mlh_rreg_lh.cookie = 0ull;
2946 lh->mlh_rreg_mode = LCK_MINMODE;
2949 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2951 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2952 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2956 * Initialize fields of struct mdt_thread_info. Other fields are left in
2957 * uninitialized state, because it's too expensive to zero out whole
2958 * mdt_thread_info (> 1K) on each request arrival.
2960 static void mdt_thread_info_init(struct ptlrpc_request *req,
2961 struct mdt_thread_info *info)
2965 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2966 info->mti_pill = &req->rq_pill;
2969 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2970 mdt_lock_handle_init(&info->mti_lh[i]);
2972 /* mdt device: it can be NULL while CONNECT */
2973 if (req->rq_export) {
2974 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2975 info->mti_exp = req->rq_export;
2977 info->mti_mdt = NULL;
2978 info->mti_env = req->rq_svc_thread->t_env;
2979 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2980 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2981 info->mti_mos = NULL;
2983 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2984 info->mti_body = NULL;
2985 info->mti_object = NULL;
2986 info->mti_dlm_req = NULL;
2987 info->mti_has_trans = 0;
2988 info->mti_cross_ref = 0;
2989 info->mti_opdata = 0;
2990 info->mti_big_lmm_used = 0;
2992 /* To not check for split by default. */
2993 info->mti_spec.no_create = 0;
2996 static void mdt_thread_info_fini(struct mdt_thread_info *info)
3000 req_capsule_fini(info->mti_pill);
3001 if (info->mti_object != NULL) {
3002 mdt_object_put(info->mti_env, info->mti_object);
3003 info->mti_object = NULL;
3005 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3006 mdt_lock_handle_fini(&info->mti_lh[i]);
3007 info->mti_env = NULL;
3010 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
3011 struct obd_device *obd, int *process)
3013 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3014 case MDS_CONNECT: /* This will never get here, but for completeness. */
3015 case OST_CONNECT: /* This will never get here, but for completeness. */
3016 case MDS_DISCONNECT:
3017 case OST_DISCONNECT:
3023 case MDS_DONE_WRITING:
3024 case MDS_SYNC: /* used in unmounting */
3030 *process = target_queue_recovery_request(req, obd);
3034 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
3041 * Handle recovery. Return:
3042 * +1: continue request processing;
3043 * -ve: abort immediately with the given error code;
3044 * 0: send reply with error code in req->rq_status;
3046 static int mdt_recovery(struct mdt_thread_info *info)
3048 struct ptlrpc_request *req = mdt_info_req(info);
3049 struct obd_device *obd;
3053 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3056 case SEC_CTX_INIT_CONT:
3062 rc = mdt_handle_idmap(info);
3071 if (unlikely(!class_connected_export(req->rq_export))) {
3072 CDEBUG(D_HA, "operation %d on unconnected MDS from %s\n",
3073 lustre_msg_get_opc(req->rq_reqmsg),
3074 libcfs_id2str(req->rq_peer));
3075 /* FIXME: For CMD cleanup, when mds_B stop, the req from
3076 * mds_A will get -ENOTCONN(especially for ping req),
3077 * which will cause that mds_A deactive timeout, then when
3078 * mds_A cleanup, the cleanup process will be suspended since
3079 * deactive timeout is not zero.
3081 req->rq_status = -ENOTCONN;
3082 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
3086 /* sanity check: if the xid matches, the request must be marked as a
3087 * resent or replayed */
3088 if (req_xid_is_last(req)) {
3089 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
3090 (MSG_RESENT | MSG_REPLAY))) {
3091 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
3092 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
3093 lustre_msg_get_flags(req->rq_reqmsg));
3095 req->rq_status = -ENOTCONN;
3100 /* else: note the opposite is not always true; a RESENT req after a
3101 * failover will usually not match the last_xid, since it was likely
3102 * never committed. A REPLAYed request will almost never match the
3103 * last xid, however it could for a committed, but still retained,
3106 obd = req->rq_export->exp_obd;
3108 /* Check for aborted recovery... */
3109 if (unlikely(obd->obd_recovering)) {
3112 DEBUG_REQ(D_INFO, req, "Got new replay");
3113 rc = mdt_filter_recovery_request(req, obd, &should_process);
3114 if (rc != 0 || !should_process)
3116 else if (should_process < 0) {
3117 req->rq_status = should_process;
3118 rc = ptlrpc_error(req);
3125 static int mdt_msg_check_version(struct lustre_msg *msg)
3129 switch (lustre_msg_get_opc(msg)) {
3131 case MDS_DISCONNECT:
3134 case SEC_CTX_INIT_CONT:
3137 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
3139 CERROR("bad opc %u version %08x, expecting %08x\n",
3140 lustre_msg_get_opc(msg),
3141 lustre_msg_get_version(msg),
3142 LUSTRE_OBD_VERSION);
3146 case MDS_GETATTR_NAME:
3153 case MDS_DONE_WRITING:
3160 case MDS_HSM_PROGRESS:
3161 case MDS_HSM_REQUEST:
3162 case MDS_HSM_CT_REGISTER:
3163 case MDS_HSM_CT_UNREGISTER:
3164 case MDS_HSM_STATE_GET:
3165 case MDS_HSM_STATE_SET:
3166 case MDS_HSM_ACTION:
3167 case MDS_QUOTACHECK:
3174 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
3176 CERROR("bad opc %u version %08x, expecting %08x\n",
3177 lustre_msg_get_opc(msg),
3178 lustre_msg_get_version(msg),
3179 LUSTRE_MDS_VERSION);
3183 case LDLM_BL_CALLBACK:
3184 case LDLM_CP_CALLBACK:
3185 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
3187 CERROR("bad opc %u version %08x, expecting %08x\n",
3188 lustre_msg_get_opc(msg),
3189 lustre_msg_get_version(msg),
3190 LUSTRE_DLM_VERSION);
3192 case OBD_LOG_CANCEL:
3193 case LLOG_ORIGIN_HANDLE_CREATE:
3194 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
3195 case LLOG_ORIGIN_HANDLE_READ_HEADER:
3196 case LLOG_ORIGIN_HANDLE_CLOSE:
3197 case LLOG_ORIGIN_HANDLE_DESTROY:
3198 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
3200 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
3202 CERROR("bad opc %u version %08x, expecting %08x\n",
3203 lustre_msg_get_opc(msg),
3204 lustre_msg_get_version(msg),
3205 LUSTRE_LOG_VERSION);
3208 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
3214 static int mdt_handle0(struct ptlrpc_request *req,
3215 struct mdt_thread_info *info,
3216 struct mdt_opc_slice *supported)
3218 struct mdt_handler *h;
3219 struct lustre_msg *msg;
3224 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
3227 LASSERT(current->journal_info == NULL);
3229 msg = req->rq_reqmsg;
3230 rc = mdt_msg_check_version(msg);
3231 if (likely(rc == 0)) {
3232 rc = mdt_recovery(info);
3233 if (likely(rc == +1)) {
3234 h = mdt_handler_find(lustre_msg_get_opc(msg),
3236 if (likely(h != NULL)) {
3237 rc = mdt_req_handle(info, h, req);
3239 CERROR("The unsupported opc: 0x%x\n",
3240 lustre_msg_get_opc(msg) );
3241 req->rq_status = -ENOTSUPP;
3242 rc = ptlrpc_error(req);
3247 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
3252 * MDT handler function called by ptlrpc service thread when request comes.
3254 * XXX common "target" functionality should be factored into separate module
3255 * shared by mdt, ost and stand-alone services like fld.
3257 int mdt_handle_common(struct ptlrpc_request *req,
3258 struct mdt_opc_slice *supported)
3261 struct mdt_thread_info *info;
3265 env = req->rq_svc_thread->t_env;
3266 /* Refill(initilize) the context(mdt_thread_info), in case it is
3267 * not initialized yet. Usually it happens during start up, after
3268 * MDS(ptlrpc threads) is start up, it gets the first CONNECT request,
3269 * before MDT_thread_info is initialized */
3271 LASSERT(env != NULL);
3272 LASSERT(env->le_ses != NULL);
3273 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
3274 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3275 LASSERT(info != NULL);
3277 mdt_thread_info_init(req, info);
3279 rc = mdt_handle0(req, info, supported);
3281 mdt_thread_info_fini(info);
3286 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3289 int mdt_recovery_handle(struct ptlrpc_request *req)
3294 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3296 rc = mdt_handle_common(req, mdt_fld_handlers);
3299 rc = mdt_handle_common(req, mdt_seq_handlers);
3302 rc = mdt_handle_common(req, mdt_regular_handlers);
3324 static int mdt_intent_getattr(enum mdt_it_code opcode,
3325 struct mdt_thread_info *info,
3326 struct ldlm_lock **,
3328 static int mdt_intent_layout(enum mdt_it_code opcode,
3329 struct mdt_thread_info *info,
3330 struct ldlm_lock **,
3332 static int mdt_intent_reint(enum mdt_it_code opcode,
3333 struct mdt_thread_info *info,
3334 struct ldlm_lock **,
3337 static struct mdt_it_flavor {
3338 const struct req_format *it_fmt;
3340 int (*it_act)(enum mdt_it_code ,
3341 struct mdt_thread_info *,
3342 struct ldlm_lock **,
3345 } mdt_it_flavor[] = {
3347 .it_fmt = &RQF_LDLM_INTENT,
3348 /*.it_flags = HABEO_REFERO,*/
3350 .it_act = mdt_intent_reint,
3351 .it_reint = REINT_OPEN
3354 .it_fmt = &RQF_LDLM_INTENT,
3355 .it_flags = MUTABOR,
3356 .it_act = mdt_intent_reint,
3357 .it_reint = REINT_OPEN
3360 .it_fmt = &RQF_LDLM_INTENT,
3361 .it_flags = MUTABOR,
3362 .it_act = mdt_intent_reint,
3363 .it_reint = REINT_CREATE
3365 [MDT_IT_GETATTR] = {
3366 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3367 .it_flags = HABEO_REFERO,
3368 .it_act = mdt_intent_getattr
3370 [MDT_IT_READDIR] = {
3376 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3377 .it_flags = HABEO_REFERO,
3378 .it_act = mdt_intent_getattr
3381 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3382 .it_flags = MUTABOR,
3384 .it_reint = REINT_UNLINK
3388 .it_flags = MUTABOR,
3391 [MDT_IT_GETXATTR] = {
3397 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3399 .it_act = mdt_intent_layout
3403 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3404 struct ldlm_lock **lockp,
3405 struct ldlm_lock *new_lock,
3406 struct mdt_lock_handle *lh,
3409 struct ptlrpc_request *req = mdt_info_req(info);
3410 struct ldlm_lock *lock = *lockp;
3413 * Get new lock only for cases when possible resent did not find any
3416 if (new_lock == NULL)
3417 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3419 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3420 lh->mlh_reg_lh.cookie = 0;
3424 LASSERTF(new_lock != NULL,
3425 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3428 * If we've already given this lock to a client once, then we should
3429 * have no readers or writers. Otherwise, we should have one reader
3430 * _or_ writer ref (which will be zeroed below) before returning the
3433 if (new_lock->l_export == req->rq_export) {
3434 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3436 LASSERT(new_lock->l_export == NULL);
3437 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3442 if (new_lock->l_export == req->rq_export) {
3444 * Already gave this to the client, which means that we
3445 * reconstructed a reply.
3447 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3449 lh->mlh_reg_lh.cookie = 0;
3450 RETURN(ELDLM_LOCK_REPLACED);
3454 * Fixup the lock to be given to the client.
3456 lock_res_and_lock(new_lock);
3457 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3458 * possible blocking AST. */
3459 while (new_lock->l_readers > 0) {
3460 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3461 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3462 new_lock->l_readers--;
3464 while (new_lock->l_writers > 0) {
3465 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3466 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3467 new_lock->l_writers--;
3470 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3471 new_lock->l_blocking_ast = lock->l_blocking_ast;
3472 new_lock->l_completion_ast = lock->l_completion_ast;
3473 new_lock->l_remote_handle = lock->l_remote_handle;
3474 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3476 unlock_res_and_lock(new_lock);
3478 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3479 &new_lock->l_remote_handle,
3480 &new_lock->l_exp_hash);
3482 LDLM_LOCK_RELEASE(new_lock);
3483 lh->mlh_reg_lh.cookie = 0;
3485 RETURN(ELDLM_LOCK_REPLACED);
3488 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3489 struct ldlm_lock *new_lock,
3490 struct ldlm_lock **old_lock,
3491 struct mdt_lock_handle *lh)
3493 struct ptlrpc_request *req = mdt_info_req(info);
3494 struct obd_export *exp = req->rq_export;
3495 struct lustre_handle remote_hdl;
3496 struct ldlm_request *dlmreq;
3497 struct ldlm_lock *lock;
3499 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3502 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3503 remote_hdl = dlmreq->lock_handle[0];
3505 /* In the function below, .hs_keycmp resolves to
3506 * ldlm_export_lock_keycmp() */
3507 /* coverity[overrun-buffer-val] */
3508 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3510 if (lock != new_lock) {
3511 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3512 lh->mlh_reg_mode = lock->l_granted_mode;
3514 LDLM_DEBUG(lock, "Restoring lock cookie");
3515 DEBUG_REQ(D_DLMTRACE, req,
3516 "restoring lock cookie "LPX64,
3517 lh->mlh_reg_lh.cookie);
3519 *old_lock = LDLM_LOCK_GET(lock);
3520 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3524 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3528 * If the xid matches, then we know this is a resent request, and allow
3529 * it. (It's probably an OPEN, for which we don't send a lock.
3531 if (req_xid_is_last(req))
3535 * This remote handle isn't enqueued, so we never received or processed
3536 * this request. Clear MSG_RESENT, because it can be handled like any
3537 * normal request now.
3539 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3541 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3545 static int mdt_intent_getattr(enum mdt_it_code opcode,
3546 struct mdt_thread_info *info,
3547 struct ldlm_lock **lockp,
3550 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3551 struct ldlm_lock *new_lock = NULL;
3553 struct ldlm_reply *ldlm_rep;
3554 struct ptlrpc_request *req;
3555 struct mdt_body *reqbody;
3556 struct mdt_body *repbody;
3560 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3563 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3566 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3567 repbody->eadatasize = 0;
3568 repbody->aclsize = 0;
3572 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3574 case MDT_IT_GETATTR:
3575 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3579 CERROR("Unsupported intent (%d)\n", opcode);
3580 GOTO(out_shrink, rc = -EINVAL);
3583 rc = mdt_init_ucred(info, reqbody);
3585 GOTO(out_shrink, rc);
3587 req = info->mti_pill->rc_req;
3588 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3589 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3591 /* Get lock from request for possible resent case. */
3592 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3594 ldlm_rep->lock_policy_res2 =
3595 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3597 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3598 ldlm_rep->lock_policy_res2 = 0;
3599 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3600 ldlm_rep->lock_policy_res2) {
3601 lhc->mlh_reg_lh.cookie = 0ull;
3602 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3605 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3608 mdt_exit_ucred(info);
3610 mdt_client_compatibility(info);
3611 rc2 = mdt_fix_reply(info);
3617 static int mdt_intent_layout(enum mdt_it_code opcode,
3618 struct mdt_thread_info *info,
3619 struct ldlm_lock **lockp,
3622 struct layout_intent *layout;
3626 if (opcode != MDT_IT_LAYOUT) {
3627 CERROR("%s: Unknown intent (%d)\n",
3628 info->mti_exp->exp_obd->obd_name, opcode);
3632 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3633 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3634 ldlm_lvbo_size(*lockp));
3635 rc = req_capsule_server_pack(info->mti_pill);
3639 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3640 LASSERT(layout != NULL);
3641 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3642 /* return to normal ldlm handling */
3645 CERROR("%s: Unsupported layout intent (%d)\n",
3646 info->mti_exp->exp_obd->obd_name, layout->li_opc);
3650 static int mdt_intent_reint(enum mdt_it_code opcode,
3651 struct mdt_thread_info *info,
3652 struct ldlm_lock **lockp,
3655 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3656 struct ldlm_reply *rep = NULL;
3660 static const struct req_format *intent_fmts[REINT_MAX] = {
3661 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3662 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3667 opc = mdt_reint_opcode(info, intent_fmts);
3671 if (mdt_it_flavor[opcode].it_reint != opc) {
3672 CERROR("Reint code %ld doesn't match intent: %d\n",
3674 RETURN(err_serious(-EPROTO));
3677 /* Get lock from request for possible resent case. */
3678 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3680 rc = mdt_reint_internal(info, lhc, opc);
3682 /* Check whether the reply has been packed successfully. */
3683 if (mdt_info_req(info)->rq_repmsg != NULL)
3684 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3686 RETURN(err_serious(-EFAULT));
3688 /* MDC expects this in any case */
3690 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3692 /* Cross-ref case, the lock should be returned to the client */
3693 if (rc == -EREMOTE) {
3694 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3695 rep->lock_policy_res2 = 0;
3696 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3699 rep->lock_policy_res2 = clear_serious(rc);
3701 if (rep->lock_policy_res2 == -ENOENT &&
3702 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3703 rep->lock_policy_res2 = 0;
3705 if (rc == -ENOTCONN || rc == -ENODEV ||
3706 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3708 * If it is the disconnect error (ENODEV & ENOCONN), the error
3709 * will be returned by rq_status, and client at ptlrpc layer
3710 * will detect this, then disconnect, reconnect the import
3711 * immediately, instead of impacting the following the rpc.
3713 lhc->mlh_reg_lh.cookie = 0ull;
3717 * For other cases, the error will be returned by intent.
3718 * and client will retrieve the result from intent.
3721 * FIXME: when open lock is finished, that should be
3724 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3725 LASSERTF(rc == 0, "Error occurred but lock handle "
3726 "is still in use, rc = %d\n", rc);
3727 rep->lock_policy_res2 = 0;
3728 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3731 lhc->mlh_reg_lh.cookie = 0ull;
3732 RETURN(ELDLM_LOCK_ABORTED);
3737 static int mdt_intent_code(long itcode)
3745 case IT_OPEN|IT_CREAT:
3752 rc = MDT_IT_READDIR;
3755 rc = MDT_IT_GETATTR;
3767 rc = MDT_IT_GETXATTR;
3772 case IT_QUOTA_DQACQ:
3777 CERROR("Unknown intent opcode: %ld\n", itcode);
3784 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3785 struct ldlm_lock **lockp, __u64 flags)
3787 struct req_capsule *pill;
3788 struct mdt_it_flavor *flv;
3793 opc = mdt_intent_code(itopc);
3797 pill = info->mti_pill;
3799 if (opc == MDT_IT_QUOTA) {
3800 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3803 RETURN(-EOPNOTSUPP);
3805 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3806 /* pass the request to quota master */
3807 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3808 mdt_info_req(info), lockp,
3813 flv = &mdt_it_flavor[opc];
3814 if (flv->it_fmt != NULL)
3815 req_capsule_extend(pill, flv->it_fmt);
3817 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3819 struct ptlrpc_request *req = mdt_info_req(info);
3820 if (flv->it_flags & MUTABOR &&
3821 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3824 if (rc == 0 && flv->it_act != NULL) {
3825 /* execute policy */
3826 rc = flv->it_act(opc, info, lockp, flags);
3833 static int mdt_intent_policy(struct ldlm_namespace *ns,
3834 struct ldlm_lock **lockp, void *req_cookie,
3835 ldlm_mode_t mode, __u64 flags, void *data)
3837 struct mdt_thread_info *info;
3838 struct ptlrpc_request *req = req_cookie;
3839 struct ldlm_intent *it;
3840 struct req_capsule *pill;
3845 LASSERT(req != NULL);
3847 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3849 LASSERT(info != NULL);
3850 pill = info->mti_pill;
3851 LASSERT(pill->rc_req == req);
3853 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3854 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3855 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3857 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3861 /* Lock without inodebits makes no sense and will oops
3862 * later in ldlm. Let's check it now to see if we have
3863 * ibits corrupted somewhere in mdt_intent_opc().
3864 * The case for client miss to set ibits has been
3865 * processed by others. */
3866 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3867 lr_type == LDLM_IBITS,
3868 info->mti_dlm_req->lock_desc.\
3869 l_policy_data.l_inodebits.bits != 0));
3871 rc = err_serious(-EFAULT);
3873 /* No intent was provided */
3874 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3875 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3876 rc = req_capsule_server_pack(pill);
3878 rc = err_serious(rc);
3883 static int mdt_seq_fini(const struct lu_env *env,
3884 struct mdt_device *m)
3886 return seq_site_fini(env, mdt_seq_site(m));
3889 static int mdt_seq_init(const struct lu_env *env,
3891 struct mdt_device *m)
3893 struct seq_server_site *ss;
3898 ss = mdt_seq_site(m);
3901 * This is sequence-controller node. Init seq-controller server on local
3904 if (ss->ss_node_id == 0) {
3905 LASSERT(ss->ss_control_seq == NULL);
3907 OBD_ALLOC_PTR(ss->ss_control_seq);
3908 if (ss->ss_control_seq == NULL)
3911 rc = seq_server_init(ss->ss_control_seq,
3912 m->mdt_bottom, uuid,
3913 LUSTRE_SEQ_CONTROLLER,
3918 GOTO(out_seq_fini, rc);
3920 OBD_ALLOC_PTR(ss->ss_client_seq);
3921 if (ss->ss_client_seq == NULL)
3922 GOTO(out_seq_fini, rc = -ENOMEM);
3924 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3925 if (prefix == NULL) {
3926 OBD_FREE_PTR(ss->ss_client_seq);
3927 GOTO(out_seq_fini, rc = -ENOMEM);
3930 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3934 * Init seq-controller client after seq-controller server is
3935 * ready. Pass ss->ss_control_seq to it for direct talking.
3937 rc = seq_client_init(ss->ss_client_seq, NULL,
3938 LUSTRE_SEQ_METADATA, prefix,
3939 ss->ss_control_seq);
3940 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3943 GOTO(out_seq_fini, rc);
3946 /* Init seq-server on local MDT */
3947 LASSERT(ss->ss_server_seq == NULL);
3949 OBD_ALLOC_PTR(ss->ss_server_seq);
3950 if (ss->ss_server_seq == NULL)
3951 GOTO(out_seq_fini, rc = -ENOMEM);
3953 rc = seq_server_init(ss->ss_server_seq,
3954 m->mdt_bottom, uuid,
3959 GOTO(out_seq_fini, rc = -ENOMEM);
3961 /* Assign seq-controller client to local seq-server. */
3962 if (ss->ss_node_id == 0) {
3963 LASSERT(ss->ss_client_seq != NULL);
3965 rc = seq_server_set_cli(ss->ss_server_seq,
3973 mdt_seq_fini(env, m);
3981 static int mdt_fld_fini(const struct lu_env *env,
3982 struct mdt_device *m)
3984 struct seq_server_site *ss = mdt_seq_site(m);
3987 if (ss && ss->ss_server_fld) {
3988 fld_server_fini(env, ss->ss_server_fld);
3989 OBD_FREE_PTR(ss->ss_server_fld);
3990 ss->ss_server_fld = NULL;
3996 static int mdt_fld_init(const struct lu_env *env,
3998 struct mdt_device *m)
4000 struct seq_server_site *ss;
4004 ss = mdt_seq_site(m);
4006 OBD_ALLOC_PTR(ss->ss_server_fld);
4007 if (ss->ss_server_fld == NULL)
4008 RETURN(rc = -ENOMEM);
4010 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4011 ss->ss_node_id, LU_SEQ_RANGE_MDT);
4013 OBD_FREE_PTR(ss->ss_server_fld);
4014 ss->ss_server_fld = NULL;
4021 static void mdt_stack_pre_fini(const struct lu_env *env,
4022 struct mdt_device *m, struct lu_device *top)
4024 struct obd_device *obd = mdt2obd_dev(m);
4025 struct lustre_cfg_bufs *bufs;
4026 struct lustre_cfg *lcfg;
4027 struct mdt_thread_info *info;
4032 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4033 LASSERT(info != NULL);
4035 bufs = &info->mti_u.bufs;
4037 LASSERT(m->mdt_child_exp);
4038 LASSERT(m->mdt_child_exp->exp_obd);
4039 obd = m->mdt_child_exp->exp_obd;
4041 /* process cleanup, pass mdt obd name to get obd umount flags */
4042 /* XXX: this is needed because all layers are referenced by
4043 * objects (some of them are pinned by osd, for example *
4044 * the proper solution should be a model where object used
4045 * by osd only doesn't have mdt/mdd slices -bzzz */
4046 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4047 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4048 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
4050 CERROR("%s:Cannot alloc lcfg!\n", mdt_obd_name(m));
4053 top->ld_ops->ldo_process_config(env, top, lcfg);
4054 lustre_cfg_free(lcfg);
4058 static void mdt_stack_fini(const struct lu_env *env,
4059 struct mdt_device *m, struct lu_device *top)
4061 struct obd_device *obd = mdt2obd_dev(m);
4062 struct lustre_cfg_bufs *bufs;
4063 struct lustre_cfg *lcfg;
4064 struct mdt_thread_info *info;
4068 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4069 LASSERT(info != NULL);
4071 lu_dev_del_linkage(top->ld_site, top);
4073 lu_site_purge(env, top->ld_site, -1);
4075 bufs = &info->mti_u.bufs;
4076 /* process cleanup, pass mdt obd name to get obd umount flags */
4077 /* another purpose is to let all layers to release their objects */
4078 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4083 lustre_cfg_bufs_set_string(bufs, 1, flags);
4084 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4086 CERROR("Cannot alloc lcfg!\n");
4090 top->ld_ops->ldo_process_config(env, top, lcfg);
4091 lustre_cfg_free(lcfg);
4093 lu_site_purge(env, top->ld_site, -1);
4095 m->mdt_child = NULL;
4096 m->mdt_bottom = NULL;
4098 obd_disconnect(m->mdt_child_exp);
4099 m->mdt_child_exp = NULL;
4101 obd_disconnect(m->mdt_bottom_exp);
4102 m->mdt_child_exp = NULL;
4105 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4106 const char *next, struct obd_export **exp)
4108 struct obd_connect_data *data = NULL;
4109 struct obd_device *obd;
4113 OBD_ALLOC_PTR(data);
4115 GOTO(out, rc = -ENOMEM);
4117 obd = class_name2obd(next);
4119 CERROR("%s: can't locate next device: %s\n",
4120 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next);
4121 GOTO(out, rc = -ENOTCONN);
4124 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4125 data->ocd_version = LUSTRE_VERSION_CODE;
4127 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4129 CERROR("%s: cannot connect to next dev %s (%d)\n",
4130 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next, rc);
4140 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4141 struct lustre_cfg *cfg)
4143 char *dev = lustre_cfg_string(cfg, 0);
4144 int rc, name_size, uuid_size;
4145 char *name, *uuid, *p;
4146 struct lustre_cfg_bufs *bufs;
4147 struct lustre_cfg *lcfg;
4148 struct obd_device *obd;
4149 struct lustre_profile *lprof;
4150 struct lu_site *site;
4153 /* in 1.8 we had the only device in the stack - MDS.
4154 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4155 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4156 * to generate names and setup MDT, MDD. MDT will be using
4157 * generated name to connect to MDD. for MDD the next device
4158 * will be LOD with name taken from so called "profile" which
4159 * is generated by mount_option line
4161 * 1.8 MGS generates config. commands like this:
4162 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4163 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4164 * 2.0 MGS generates config. commands like this:
4165 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4166 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4167 * 3:lustre-MDT0000-mdtlov 4:f
4169 * we generate MDD name from MDT one, just replacing T with D
4171 * after all the preparations, the logical equivalent will be
4172 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4173 * 3:lustre-MDT0000-mdtlov 4:f
4174 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4175 * 3:lustre-MDD0000 4:f
4177 * notice we build the stack from down to top: MDD first, then MDT */
4179 name_size = MAX_OBD_NAME;
4180 uuid_size = MAX_OBD_NAME;
4182 OBD_ALLOC(name, name_size);
4183 OBD_ALLOC(uuid, uuid_size);
4184 if (name == NULL || uuid == NULL)
4185 GOTO(cleanup_mem, rc = -ENOMEM);
4187 OBD_ALLOC_PTR(bufs);
4189 GOTO(cleanup_mem, rc = -ENOMEM);
4192 p = strstr(name, "-MDT");
4194 GOTO(cleanup_mem, rc = -ENOMEM);
4197 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4199 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4200 if (lprof == NULL || lprof->lp_dt == NULL) {
4201 CERROR("can't find the profile: %s\n",
4202 lustre_cfg_string(cfg, 0));
4203 GOTO(cleanup_mem, rc = -EINVAL);
4206 lustre_cfg_bufs_reset(bufs, name);
4207 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4208 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4209 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4211 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4213 GOTO(free_bufs, rc = -ENOMEM);
4215 rc = class_attach(lcfg);
4217 GOTO(lcfg_cleanup, rc);
4219 obd = class_name2obd(name);
4221 CERROR("Can not find obd %s (%s in config)\n",
4222 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4223 GOTO(class_detach, rc = -EINVAL);
4226 lustre_cfg_free(lcfg);
4228 lustre_cfg_bufs_reset(bufs, name);
4229 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4230 lustre_cfg_bufs_set_string(bufs, 2, dev);
4231 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4233 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4235 rc = class_setup(obd, lcfg);
4237 GOTO(class_detach, rc);
4239 /* connect to MDD we just setup */
4240 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4244 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4246 LASSERT(mdt->mdt_md_dev.md_lu_dev.ld_site == NULL);
4247 mdt->mdt_md_dev.md_lu_dev.ld_site = site;
4248 site->ls_top_dev = &mdt->mdt_md_dev.md_lu_dev;
4249 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4252 /* now connect to bottom OSD */
4253 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4254 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4258 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4261 rc = lu_env_refill((struct lu_env *)env);
4263 CERROR("Failure to refill session: '%d'\n", rc);
4265 lu_dev_add_linkage(site, &mdt->mdt_md_dev.md_lu_dev);
4270 class_detach(obd, lcfg);
4272 lustre_cfg_free(lcfg);
4277 OBD_FREE(name, name_size);
4279 OBD_FREE(uuid, uuid_size);
4283 /* setup quota master target on MDT0 */
4284 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4285 struct lustre_cfg *cfg)
4287 struct obd_device *obd;
4288 char *dev = lustre_cfg_string(cfg, 0);
4289 char *qmtname, *uuid, *p;
4290 struct lustre_cfg_bufs *bufs;
4291 struct lustre_cfg *lcfg;
4292 struct lustre_profile *lprof;
4293 struct obd_connect_data *data;
4297 LASSERT(mdt->mdt_qmt_exp == NULL);
4298 LASSERT(mdt->mdt_qmt_dev == NULL);
4300 /* quota master is on MDT0 only for now */
4301 if (mdt->mdt_seq_site.ss_node_id != 0)
4304 /* MGS generates config commands which look as follows:
4305 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4306 * 3:lustre-MDT0000-mdtlov 4:f
4308 * We generate the QMT name from the MDT one, just replacing MD with QM
4309 * after all the preparations, the logical equivalent will be:
4310 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4311 * 3:lustre-MDT0000-osd 4:f */
4312 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4313 OBD_ALLOC(uuid, UUID_MAX);
4314 OBD_ALLOC_PTR(bufs);
4315 OBD_ALLOC_PTR(data);
4316 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4317 GOTO(cleanup_mem, rc = -ENOMEM);
4319 strcpy(qmtname, dev);
4320 p = strstr(qmtname, "-MDT");
4322 GOTO(cleanup_mem, rc = -ENOMEM);
4323 /* replace MD with QM */
4327 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4329 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4330 if (lprof == NULL || lprof->lp_dt == NULL) {
4331 CERROR("can't find profile for %s\n",
4332 lustre_cfg_string(cfg, 0));
4333 GOTO(cleanup_mem, rc = -EINVAL);
4336 lustre_cfg_bufs_reset(bufs, qmtname);
4337 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4338 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4339 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4341 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4343 GOTO(cleanup_mem, rc = -ENOMEM);
4345 rc = class_attach(lcfg);
4347 GOTO(lcfg_cleanup, rc);
4349 obd = class_name2obd(qmtname);
4351 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4352 lustre_cfg_string(cfg, 0));
4353 GOTO(class_detach, rc = -EINVAL);
4356 lustre_cfg_free(lcfg);
4358 lustre_cfg_bufs_reset(bufs, qmtname);
4359 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4360 lustre_cfg_bufs_set_string(bufs, 2, dev);
4362 /* for quota, the next device should be the OSD device */
4363 lustre_cfg_bufs_set_string(bufs, 3,
4364 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4366 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4368 rc = class_setup(obd, lcfg);
4370 GOTO(class_detach, rc);
4372 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4374 /* configure local quota objects */
4375 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4376 &mdt->mdt_md_dev.md_lu_dev,
4379 GOTO(class_cleanup, rc);
4381 /* connect to quota master target */
4382 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4383 data->ocd_version = LUSTRE_VERSION_CODE;
4384 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4387 CERROR("cannot connect to quota master device %s (%d)\n",
4389 GOTO(class_cleanup, rc);
4395 class_manual_cleanup(obd);
4396 mdt->mdt_qmt_dev = NULL;
4400 class_detach(obd, lcfg);
4402 lustre_cfg_free(lcfg);
4407 OBD_FREE(qmtname, MAX_OBD_NAME);
4409 OBD_FREE(uuid, UUID_MAX);
4415 /* Shutdown quota master target associated with mdt */
4416 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4420 if (mdt->mdt_qmt_exp == NULL)
4422 LASSERT(mdt->mdt_qmt_dev != NULL);
4424 /* the qmt automatically shuts down when the mdt disconnects */
4425 obd_disconnect(mdt->mdt_qmt_exp);
4426 mdt->mdt_qmt_exp = NULL;
4427 mdt->mdt_qmt_dev = NULL;
4431 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4433 struct md_device *next = m->mdt_child;
4434 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4435 struct obd_device *obd = mdt2obd_dev(m);
4438 target_recovery_fini(obd);
4440 ping_evictor_stop();
4443 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4444 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4445 obd_exports_barrier(obd);
4446 obd_zombie_barrier();
4450 tgt_fini(env, &m->mdt_lut);
4451 mdt_fs_cleanup(env, m);
4452 upcall_cache_cleanup(m->mdt_identity_cache);
4453 m->mdt_identity_cache = NULL;
4455 if (m->mdt_namespace != NULL) {
4456 ldlm_namespace_free(m->mdt_namespace, NULL,
4457 d->ld_obd->obd_force);
4458 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4461 mdt_quota_fini(env, m);
4463 cfs_free_nidlist(&m->mdt_nosquash_nids);
4464 if (m->mdt_nosquash_str) {
4465 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4466 m->mdt_nosquash_str = NULL;
4467 m->mdt_nosquash_strlen = 0;
4470 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_PAUSE_LFSCK,
4472 mdt_seq_fini(env, m);
4473 mdt_fld_fini(env, m);
4474 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4476 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4477 cfs_timer_disarm(&m->mdt_ck_timer);
4478 mdt_ck_thread_stop(m);
4483 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4485 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4487 server_put_mount(mdt2obd_dev(m)->obd_name, NULL);
4492 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4494 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4495 struct sptlrpc_rule_set tmp_rset;
4498 sptlrpc_rule_set_init(&tmp_rset);
4499 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4501 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4506 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4508 write_lock(&m->mdt_sptlrpc_lock);
4509 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4510 m->mdt_sptlrpc_rset = tmp_rset;
4511 write_unlock(&m->mdt_sptlrpc_lock);
4516 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4518 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4519 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4521 struct mdt_thread_info *info;
4522 struct obd_device *obd;
4523 const char *dev = lustre_cfg_string(cfg, 0);
4524 const char *num = lustre_cfg_string(cfg, 2);
4525 struct lustre_mount_info *lmi = NULL;
4526 struct lustre_sb_info *lsi;
4528 struct seq_server_site *ss_site;
4529 const char *identity_upcall = "NONE";
4530 struct md_device *next;
4536 md_device_init(&m->mdt_md_dev, ldt);
4538 * Environment (env) might be missing mdt_thread_key values at that
4539 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4542 * Usually device allocation path doesn't use module key values, but
4543 * mdt has to do a lot of work here, so allocate key value.
4545 rc = lu_env_refill((struct lu_env *)env);
4549 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4550 LASSERT(info != NULL);
4552 obd = class_name2obd(dev);
4553 LASSERT(obd != NULL);
4555 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4557 m->mdt_som_conf = 0;
4559 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4560 lmi = server_get_mount(dev);
4562 CERROR("Cannot get mount info for %s!\n", dev);
4565 lsi = s2lsi(lmi->lmi_sb);
4566 /* CMD is supported only in IAM mode */
4568 node_id = simple_strtol(num, NULL, 10);
4569 obd->u.obt.obt_magic = OBT_MAGIC;
4572 rwlock_init(&m->mdt_sptlrpc_lock);
4573 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4575 spin_lock_init(&m->mdt_ioepoch_lock);
4576 m->mdt_opts.mo_compat_resname = 0;
4577 m->mdt_opts.mo_mds_capa = 1;
4578 m->mdt_opts.mo_oss_capa = 1;
4579 m->mdt_capa_timeout = CAPA_TIMEOUT;
4580 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4581 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4582 m->mdt_squash_uid = 0;
4583 m->mdt_squash_gid = 0;
4584 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4585 m->mdt_nosquash_str = NULL;
4586 m->mdt_nosquash_strlen = 0;
4587 init_rwsem(&m->mdt_squash_sem);
4588 spin_lock_init(&m->mdt_osfs_lock);
4589 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4590 m->mdt_enable_remote_dir = 0;
4592 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4593 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4594 /* set this lu_device to obd, because error handling need it */
4595 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4597 /* init the stack */
4598 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4600 CERROR("Can't init device stack, rc %d\n", rc);
4604 s = m->mdt_md_dev.md_lu_dev.ld_site;
4605 ss_site = &m->mdt_seq_site;
4606 s->ld_seq_site = ss_site;
4609 /* set server index */
4610 ss_site->ss_node_id = node_id;
4612 /* failover is the default
4613 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4614 * assumed whose ss_node_id == 0 XXX
4616 obd->obd_replayable = 1;
4617 /* No connection accepted until configurations will finish */
4618 obd->obd_no_conn = 1;
4620 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4621 char *str = lustre_cfg_string(cfg, 4);
4622 if (strchr(str, 'n')) {
4623 CWARN("%s: recovery disabled\n", obd->obd_name);
4624 obd->obd_replayable = 0;
4628 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom);
4630 GOTO(err_fini_stack, rc);
4632 rc = mdt_fld_init(env, obd->obd_name, m);
4636 rc = mdt_seq_init(env, obd->obd_name, m);
4638 GOTO(err_fini_fld, rc);
4640 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4641 LUSTRE_MDT_NAME"-%p", m);
4642 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4643 LDLM_NAMESPACE_SERVER,
4644 LDLM_NAMESPACE_GREEDY,
4646 if (m->mdt_namespace == NULL)
4647 GOTO(err_fini_seq, rc = -ENOMEM);
4649 m->mdt_namespace->ns_lvbp = m;
4650 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4652 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4653 /* set obd_namespace for compatibility with old code */
4654 obd->obd_namespace = m->mdt_namespace;
4656 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4658 rc = mdt_ck_thread_start(m);
4660 GOTO(err_free_ns, rc);
4662 rc = mdt_fs_setup(env, m, obd, lsi);
4666 mdt_adapt_sptlrpc_conf(obd, 1);
4668 next = m->mdt_child;
4669 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4672 GOTO(err_llog_cleanup, rc);
4674 if (mntopts & MNTOPT_USERXATTR)
4675 m->mdt_opts.mo_user_xattr = 1;
4677 m->mdt_opts.mo_user_xattr = 0;
4679 if (mntopts & MNTOPT_ACL)
4680 m->mdt_opts.mo_acl = 1;
4682 m->mdt_opts.mo_acl = 0;
4684 /* XXX: to support suppgid for ACL, we enable identity_upcall
4685 * by default, otherwise, maybe got unexpected -EACCESS. */
4686 if (m->mdt_opts.mo_acl)
4687 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4689 m->mdt_identity_cache = upcall_cache_init(obd->obd_name,identity_upcall,
4690 &mdt_identity_upcall_cache_ops);
4691 if (IS_ERR(m->mdt_identity_cache)) {
4692 rc = PTR_ERR(m->mdt_identity_cache);
4693 m->mdt_identity_cache = NULL;
4694 GOTO(err_llog_cleanup, rc);
4697 rc = mdt_procfs_init(m, dev);
4699 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4700 GOTO(err_recovery, rc);
4703 rc = mdt_quota_init(env, m, cfg);
4705 GOTO(err_procfs, rc);
4707 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4708 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4709 "mdt_ldlm_client", m->mdt_ldlm_client);
4711 ping_evictor_start();
4713 /* recovery will be started upon mdt_prepare()
4714 * when the whole stack is complete and ready
4715 * to serve the requests */
4717 mdt_init_capa_ctxt(env, m);
4719 /* Reduce the initial timeout on an MDS because it doesn't need such
4720 * a long timeout as an OST does. Adaptive timeouts will adjust this
4721 * value appropriately. */
4722 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4723 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4730 target_recovery_fini(obd);
4731 upcall_cache_cleanup(m->mdt_identity_cache);
4732 m->mdt_identity_cache = NULL;
4734 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4735 mdt_fs_cleanup(env, m);
4737 cfs_timer_disarm(&m->mdt_ck_timer);
4738 mdt_ck_thread_stop(m);
4740 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4741 obd->obd_namespace = m->mdt_namespace = NULL;
4743 mdt_seq_fini(env, m);
4745 mdt_fld_fini(env, m);
4747 tgt_fini(env, &m->mdt_lut);
4749 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4752 server_put_mount(dev, lmi->lmi_mnt);
4756 /* For interoperability, the left element is old parameter, the right one
4757 * is the new version of the parameter, if some parameter is deprecated,
4758 * the new version should be set as NULL. */
4759 static struct cfg_interop_param mdt_interop_param[] = {
4760 { "mdt.group_upcall", NULL },
4761 { "mdt.quota_type", NULL },
4762 { "mdd.quota_type", NULL },
4763 { "mdt.rootsquash", "mdt.root_squash" },
4764 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4768 /* used by MGS to process specific configurations */
4769 static int mdt_process_config(const struct lu_env *env,
4770 struct lu_device *d, struct lustre_cfg *cfg)
4772 struct mdt_device *m = mdt_dev(d);
4773 struct md_device *md_next = m->mdt_child;
4774 struct lu_device *next = md2lu_dev(md_next);
4778 switch (cfg->lcfg_command) {
4780 struct lprocfs_static_vars lvars;
4781 struct obd_device *obd = d->ld_obd;
4783 /* For interoperability */
4784 struct cfg_interop_param *ptr = NULL;
4785 struct lustre_cfg *old_cfg = NULL;
4788 param = lustre_cfg_string(cfg, 1);
4789 if (param == NULL) {
4790 CERROR("param is empty\n");
4795 ptr = class_find_old_param(param, mdt_interop_param);
4797 if (ptr->new_param == NULL) {
4799 CWARN("For interoperability, skip this %s."
4800 " It is obsolete.\n", ptr->old_param);
4804 CWARN("Found old param %s, changed it to %s.\n",
4805 ptr->old_param, ptr->new_param);
4808 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4815 lprocfs_mdt_init_vars(&lvars);
4816 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4818 if (rc > 0 || rc == -ENOSYS)
4819 /* we don't understand; pass it on */
4820 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4822 if (old_cfg != NULL)
4823 lustre_cfg_free(cfg);
4828 /* others are passed further */
4829 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4835 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4836 const struct lu_object_header *hdr,
4837 struct lu_device *d)
4839 struct mdt_object *mo;
4843 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, CFS_ALLOC_IO);
4845 struct lu_object *o;
4846 struct lu_object_header *h;
4848 o = &mo->mot_obj.mo_lu;
4849 h = &mo->mot_header;
4850 lu_object_header_init(h);
4851 lu_object_init(o, h, d);
4852 lu_object_add_top(h, o);
4853 o->lo_ops = &mdt_obj_ops;
4854 mutex_init(&mo->mot_ioepoch_mutex);
4855 mutex_init(&mo->mot_lov_mutex);
4861 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4862 const struct lu_object_conf *unused)
4864 struct mdt_device *d = mdt_dev(o->lo_dev);
4865 struct lu_device *under;
4866 struct lu_object *below;
4870 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4871 PFID(lu_object_fid(o)));
4873 under = &d->mdt_child->md_lu_dev;
4874 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4875 if (below != NULL) {
4876 lu_object_add(o, below);
4883 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4885 struct mdt_object *mo = mdt_obj(o);
4886 struct lu_object_header *h;
4890 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4891 PFID(lu_object_fid(o)));
4894 lu_object_header_fini(h);
4895 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4900 static int mdt_object_print(const struct lu_env *env, void *cookie,
4901 lu_printer_t p, const struct lu_object *o)
4903 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4904 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4905 "flags="LPX64", epochcount=%d, writecount=%d)",
4906 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4907 mdto->mot_ioepoch_count, mdto->mot_writecount);
4910 static int mdt_prepare(const struct lu_env *env,
4911 struct lu_device *pdev,
4912 struct lu_device *cdev)
4914 struct mdt_device *mdt = mdt_dev(cdev);
4915 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4916 struct obd_device *obd = cdev->ld_obd;
4923 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4927 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4931 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
4932 OBD_IOC_START_LFSCK,
4935 CWARN("Fail to auto trigger paused LFSCK.\n");
4937 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4938 &mdt->mdt_md_root_fid);
4942 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4943 target_recovery_init(&mdt->mdt_lut, mdt_recovery_handle);
4944 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4945 LASSERT(obd->obd_no_conn);
4946 spin_lock(&obd->obd_dev_lock);
4947 obd->obd_no_conn = 0;
4948 spin_unlock(&obd->obd_dev_lock);
4950 if (obd->obd_recovering == 0)
4951 mdt_postrecov(env, mdt);
4956 const struct lu_device_operations mdt_lu_ops = {
4957 .ldo_object_alloc = mdt_object_alloc,
4958 .ldo_process_config = mdt_process_config,
4959 .ldo_prepare = mdt_prepare,
4962 static const struct lu_object_operations mdt_obj_ops = {
4963 .loo_object_init = mdt_object_init,
4964 .loo_object_free = mdt_object_free,
4965 .loo_object_print = mdt_object_print
4968 static int mdt_obd_set_info_async(const struct lu_env *env,
4969 struct obd_export *exp,
4970 __u32 keylen, void *key,
4971 __u32 vallen, void *val,
4972 struct ptlrpc_request_set *set)
4974 struct obd_device *obd = exp->exp_obd;
4980 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4981 rc = mdt_adapt_sptlrpc_conf(obd, 0);
4989 * Match client and server connection feature flags.
4991 * Compute the compatibility flags for a connection request based on
4992 * features mutually supported by client and server.
4994 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4995 * must not be updated here, otherwise a partially initialized value may
4996 * be exposed. After the connection request is successfully processed,
4997 * the top-level MDT connect request handler atomically updates the export
4998 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4999 * reply. \see mdt_connect().
5001 * \param exp the obd_export associated with this client/target pair
5002 * \param mdt the target device for the connection
5003 * \param data stores data for this connect request
5006 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5007 * \retval -EBADE client and server feature requirements are incompatible
5009 static int mdt_connect_internal(struct obd_export *exp,
5010 struct mdt_device *mdt,
5011 struct obd_connect_data *data)
5013 LASSERT(data != NULL);
5015 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5016 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5018 /* If no known bits (which should not happen, probably,
5019 as everybody should support LOOKUP and UPDATE bits at least)
5020 revert to compat mode with plain locks. */
5021 if (!data->ocd_ibits_known &&
5022 data->ocd_connect_flags & OBD_CONNECT_IBITS)
5023 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
5025 if (!mdt->mdt_opts.mo_acl)
5026 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5028 if (!mdt->mdt_opts.mo_user_xattr)
5029 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5031 if (!mdt->mdt_som_conf)
5032 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
5034 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
5035 data->ocd_brw_size = min(data->ocd_brw_size,
5036 (__u32)MD_MAX_BRW_SIZE);
5037 if (data->ocd_brw_size == 0) {
5038 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
5039 " ocd_version: %x ocd_grant: %d "
5040 "ocd_index: %u ocd_brw_size is "
5041 "unexpectedly zero, network data "
5042 "corruption? Refusing connection of this"
5044 exp->exp_obd->obd_name,
5045 exp->exp_client_uuid.uuid,
5046 exp, data->ocd_connect_flags, data->ocd_version,
5047 data->ocd_grant, data->ocd_index);
5052 /* NB: Disregard the rule against updating
5053 * exp_connect_data.ocd_connect_flags in this case, since
5054 * tgt_client_new() needs to know if this is a lightweight
5055 * connection, and it is safe to expose this flag before
5056 * connection processing completes. */
5057 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5058 spin_lock(&exp->exp_lock);
5059 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5060 spin_unlock(&exp->exp_lock);
5063 data->ocd_version = LUSTRE_VERSION_CODE;
5064 exp->exp_connect_data = *data;
5065 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
5067 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5068 CWARN("%s: MDS requires FID support, but client not\n",
5069 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5073 if (mdt->mdt_som_conf &&
5074 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
5075 OBD_CONNECT_MDS_MDS |
5076 OBD_CONNECT_SOM))) {
5077 CWARN("%s: MDS has SOM enabled, but client does not support "
5078 "it\n", mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5082 if (data->ocd_connect_flags & OBD_CONNECT_PINGLESS) {
5083 if (suppress_pings) {
5084 spin_lock(&exp->exp_obd->obd_dev_lock);
5085 list_del_init(&exp->exp_obd_chain_timed);
5086 spin_unlock(&exp->exp_obd->obd_dev_lock);
5088 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5095 static int mdt_connect_check_sptlrpc(struct mdt_device *mdt,
5096 struct obd_export *exp,
5097 struct ptlrpc_request *req)
5099 struct sptlrpc_flavor flvr;
5102 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
5103 read_lock(&mdt->mdt_sptlrpc_lock);
5104 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
5108 read_unlock(&mdt->mdt_sptlrpc_lock);
5110 spin_lock(&exp->exp_lock);
5112 exp->exp_sp_peer = req->rq_sp_from;
5113 exp->exp_flvr = flvr;
5115 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
5116 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
5117 CERROR("unauthorized rpc flavor %x from %s, "
5118 "expect %x\n", req->rq_flvr.sf_rpc,
5119 libcfs_nid2str(req->rq_peer.nid),
5120 exp->exp_flvr.sf_rpc);
5124 spin_unlock(&exp->exp_lock);
5126 if (exp->exp_sp_peer != req->rq_sp_from) {
5127 CERROR("RPC source %s doesn't match %s\n",
5128 sptlrpc_part2name(req->rq_sp_from),
5129 sptlrpc_part2name(exp->exp_sp_peer));
5132 rc = sptlrpc_target_export_check(exp, req);
5139 /* mds_connect copy */
5140 static int mdt_obd_connect(const struct lu_env *env,
5141 struct obd_export **exp, struct obd_device *obd,
5142 struct obd_uuid *cluuid,
5143 struct obd_connect_data *data,
5146 struct mdt_thread_info *info;
5147 struct obd_export *lexp;
5148 struct lustre_handle conn = { 0 };
5149 struct mdt_device *mdt;
5150 struct ptlrpc_request *req;
5154 LASSERT(env != NULL);
5155 if (!exp || !obd || !cluuid)
5158 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5159 req = info->mti_pill->rc_req;
5160 mdt = mdt_dev(obd->obd_lu_dev);
5163 * first, check whether the stack is ready to handle requests
5164 * XXX: probably not very appropriate method is used now
5165 * at some point we should find a better one
5167 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5168 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5169 rc = obd_health_check(env, mdt->mdt_child_exp->exp_obd);
5172 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5175 rc = class_connect(&conn, obd, cluuid);
5179 lexp = class_conn2export(&conn);
5180 LASSERT(lexp != NULL);
5182 rc = mdt_connect_check_sptlrpc(mdt, lexp, req);
5186 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_RCVG_FLAG))
5187 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
5189 rc = mdt_connect_internal(lexp, mdt, data);
5191 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5194 info->mti_exp = lexp;
5195 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5196 rc = tgt_client_new(env, lexp);
5198 mdt_export_stats_init(obd, lexp, localdata);
5203 class_disconnect(lexp);
5212 static int mdt_obd_reconnect(const struct lu_env *env,
5213 struct obd_export *exp, struct obd_device *obd,
5214 struct obd_uuid *cluuid,
5215 struct obd_connect_data *data,
5218 struct mdt_thread_info *info;
5219 struct mdt_device *mdt;
5220 struct ptlrpc_request *req;
5224 if (exp == NULL || obd == NULL || cluuid == NULL)
5227 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5228 req = info->mti_pill->rc_req;
5229 mdt = mdt_dev(obd->obd_lu_dev);
5231 rc = mdt_connect_check_sptlrpc(mdt, exp, req);
5235 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5237 mdt_export_stats_init(obd, exp, localdata);
5242 static int mdt_export_cleanup(struct obd_export *exp)
5244 struct mdt_export_data *med = &exp->exp_mdt_data;
5245 struct obd_device *obd = exp->exp_obd;
5246 struct mdt_device *mdt;
5247 struct mdt_thread_info *info;
5249 CFS_LIST_HEAD(closing_list);
5250 struct mdt_file_data *mfd, *n;
5254 spin_lock(&med->med_open_lock);
5255 while (!cfs_list_empty(&med->med_open_head)) {
5256 cfs_list_t *tmp = med->med_open_head.next;
5257 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5259 /* Remove mfd handle so it can't be found again.
5260 * We are consuming the mfd_list reference here. */
5261 class_handle_unhash(&mfd->mfd_handle);
5262 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5264 spin_unlock(&med->med_open_lock);
5265 mdt = mdt_dev(obd->obd_lu_dev);
5266 LASSERT(mdt != NULL);
5268 rc = lu_env_init(&env, LCT_MD_THREAD);
5272 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5273 LASSERT(info != NULL);
5274 memset(info, 0, sizeof *info);
5275 info->mti_env = &env;
5276 info->mti_mdt = mdt;
5277 info->mti_exp = exp;
5279 if (!cfs_list_empty(&closing_list)) {
5280 struct md_attr *ma = &info->mti_attr;
5282 /* Close any open files (which may also cause orphan unlinking). */
5283 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5284 cfs_list_del_init(&mfd->mfd_list);
5285 ma->ma_need = ma->ma_valid = 0;
5286 /* Don't unlink orphan on failover umount, LU-184 */
5287 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5288 ma->ma_valid = MA_FLAGS;
5289 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5291 mdt_mfd_close(info, mfd);
5294 info->mti_mdt = NULL;
5295 /* cleanup client slot early */
5296 /* Do not erase record for recoverable client. */
5297 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5298 tgt_client_del(&env, exp);
5304 static int mdt_obd_disconnect(struct obd_export *exp)
5310 class_export_get(exp);
5312 rc = server_disconnect_export(exp);
5314 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5316 rc = mdt_export_cleanup(exp);
5317 class_export_put(exp);
5321 /* FIXME: Can we avoid using these two interfaces? */
5322 static int mdt_init_export(struct obd_export *exp)
5324 struct mdt_export_data *med = &exp->exp_mdt_data;
5328 CFS_INIT_LIST_HEAD(&med->med_open_head);
5329 spin_lock_init(&med->med_open_lock);
5330 mutex_init(&med->med_idmap_mutex);
5331 med->med_idmap = NULL;
5332 spin_lock(&exp->exp_lock);
5333 exp->exp_connecting = 1;
5334 spin_unlock(&exp->exp_lock);
5336 /* self-export doesn't need client data and ldlm initialization */
5337 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5338 &exp->exp_client_uuid)))
5341 rc = tgt_client_alloc(exp);
5345 rc = ldlm_init_export(exp);
5352 tgt_client_free(exp);
5354 CERROR("%s: Failed to initialize export: rc = %d\n",
5355 exp->exp_obd->obd_name, rc);
5359 static int mdt_destroy_export(struct obd_export *exp)
5363 if (exp_connect_rmtclient(exp))
5364 mdt_cleanup_idmap(&exp->exp_mdt_data);
5366 target_destroy_export(exp);
5367 /* destroy can be called from failed obd_setup, so
5368 * checking uuid is safer than obd_self_export */
5369 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5370 &exp->exp_client_uuid)))
5373 ldlm_destroy_export(exp);
5374 tgt_client_free(exp);
5376 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5377 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5382 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5383 void *val, int vallen)
5385 struct mdt_device *mdt = mdt_dev(info->mti_exp->exp_obd->obd_lu_dev);
5386 struct getinfo_fid2path *fpout, *fpin;
5389 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5392 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5393 lustre_swab_fid2path(fpin);
5395 memcpy(fpout, fpin, sizeof(*fpin));
5396 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5399 rc = mdt_fid2path(info->mti_env, mdt, fpout);
5403 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
5404 struct getinfo_fid2path *fp)
5406 struct mdt_object *obj;
5407 struct obd_device *obd = mdt2obd_dev(mdt);
5411 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5412 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5414 if (!fid_is_sane(&fp->gf_fid))
5417 if (!fid_is_client_mdt_visible(&fp->gf_fid)) {
5418 CWARN("%s: "DFID" is invalid, sequence should be "
5419 ">= "LPX64"\n", obd->obd_name,
5420 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5424 obj = mdt_object_find(env, mdt, &fp->gf_fid);
5425 if (obj == NULL || IS_ERR(obj)) {
5426 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5431 rc = lu_object_exists(&obj->mot_obj.mo_lu);
5437 mdt_object_put(env, obj);
5438 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5439 PFID(&fp->gf_fid), rc);
5443 rc = mo_path(env, md_object_next(&obj->mot_obj), fp->gf_path,
5444 fp->gf_pathlen, &fp->gf_recno, &fp->gf_linkno);
5445 mdt_object_put(env, obj);
5450 int mdt_get_info(struct mdt_thread_info *info)
5452 struct ptlrpc_request *req = mdt_info_req(info);
5460 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
5462 CDEBUG(D_IOCTL, "No GETINFO key");
5465 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
5468 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
5469 if (vallen == NULL) {
5470 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5474 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5476 rc = req_capsule_server_pack(info->mti_pill);
5477 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
5478 if (valout == NULL) {
5479 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5483 if (KEY_IS(KEY_FID2PATH))
5484 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5488 lustre_msg_set_status(req->rq_repmsg, rc);
5493 /* Pass the ioc down */
5494 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5495 unsigned int cmd, int len, void *data)
5497 struct lu_context ioctl_session;
5498 struct md_device *next = mdt->mdt_child;
5502 rc = lu_context_init(&ioctl_session, LCT_SESSION);
5505 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
5506 lu_context_enter(&ioctl_session);
5507 env->le_ses = &ioctl_session;
5509 LASSERT(next->md_ops->mdo_iocontrol);
5510 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5512 lu_context_exit(&ioctl_session);
5513 lu_context_fini(&ioctl_session);
5517 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5519 struct obd_ioctl_data *data = karg;
5520 struct lu_fid *fid = (struct lu_fid *)data->ioc_inlbuf1;
5522 struct mdt_object *obj;
5523 struct mdt_lock_handle *lh;
5527 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5528 if (!fid_is_sane(fid))
5531 lh = &mti->mti_lh[MDT_LH_PARENT];
5532 mdt_lock_reg_init(lh, LCK_CR);
5534 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5536 RETURN(PTR_ERR(obj));
5538 if (mdt_object_remote(obj)) {
5541 * before calling version get the correct MDS should be
5542 * fid, this is error to find remote object here
5544 CERROR("nonlocal object "DFID"\n", PFID(fid));
5545 } else if (!mdt_object_exists(obj)) {
5546 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5549 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5550 *(__u64 *)data->ioc_inlbuf2 = version;
5553 mdt_object_unlock_put(mti, obj, lh, 1);
5557 /* ioctls on obd dev */
5558 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5559 void *karg, void *uarg)
5562 struct obd_device *obd = exp->exp_obd;
5563 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5564 struct dt_device *dt = mdt->mdt_bottom;
5568 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5569 rc = lu_env_init(&env, LCT_MD_THREAD);
5575 rc = mdt_device_sync(&env, mdt);
5577 case OBD_IOC_SET_READONLY:
5578 rc = dt->dd_ops->dt_ro(&env, dt);
5580 case OBD_IOC_ABORT_RECOVERY:
5581 CERROR("Aborting recovery for device %s\n", obd->obd_name);
5582 target_stop_recovery_thread(obd);
5585 case OBD_IOC_CHANGELOG_REG:
5586 case OBD_IOC_CHANGELOG_DEREG:
5587 case OBD_IOC_CHANGELOG_CLEAR:
5588 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5590 case OBD_IOC_START_LFSCK:
5591 case OBD_IOC_STOP_LFSCK: {
5592 struct md_device *next = mdt->mdt_child;
5593 struct obd_ioctl_data *data = karg;
5595 if (unlikely(data == NULL)) {
5600 rc = next->md_ops->mdo_iocontrol(&env, next, cmd,
5605 case OBD_IOC_GET_OBJ_VERSION: {
5606 struct mdt_thread_info *mti;
5607 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5608 memset(mti, 0, sizeof *mti);
5609 mti->mti_env = &env;
5613 rc = mdt_ioc_version_get(mti, karg);
5617 CERROR("Not supported cmd = %d for device %s\n",
5618 cmd, obd->obd_name);
5626 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5628 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5632 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5636 int mdt_obd_postrecov(struct obd_device *obd)
5641 rc = lu_env_init(&env, LCT_MD_THREAD);
5644 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5649 static struct obd_ops mdt_obd_device_ops = {
5650 .o_owner = THIS_MODULE,
5651 .o_set_info_async = mdt_obd_set_info_async,
5652 .o_connect = mdt_obd_connect,
5653 .o_reconnect = mdt_obd_reconnect,
5654 .o_disconnect = mdt_obd_disconnect,
5655 .o_init_export = mdt_init_export,
5656 .o_destroy_export = mdt_destroy_export,
5657 .o_iocontrol = mdt_iocontrol,
5658 .o_postrecov = mdt_obd_postrecov,
5661 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5662 struct lu_device *d)
5664 struct mdt_device *m = mdt_dev(d);
5671 static struct lu_device *mdt_device_free(const struct lu_env *env,
5672 struct lu_device *d)
5674 struct mdt_device *m = mdt_dev(d);
5677 md_device_fini(&m->mdt_md_dev);
5682 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5683 struct lu_device_type *t,
5684 struct lustre_cfg *cfg)
5686 struct lu_device *l;
5687 struct mdt_device *m;
5693 l = &m->mdt_md_dev.md_lu_dev;
5694 rc = mdt_init0(env, m, t, cfg);
5696 mdt_device_free(env, l);
5701 l = ERR_PTR(-ENOMEM);
5705 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5706 LU_KEY_INIT(mdt, struct mdt_thread_info);
5708 static void mdt_key_fini(const struct lu_context *ctx,
5709 struct lu_context_key *key, void* data)
5711 struct mdt_thread_info *info = data;
5713 if (info->mti_big_lmm) {
5714 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5715 info->mti_big_lmm = NULL;
5716 info->mti_big_lmmsize = 0;
5721 /* context key: mdt_thread_key */
5722 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5724 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5726 return lu_ucred(info->mti_env);
5729 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5731 return lu_ucred_check(info->mti_env);
5735 * Enable/disable COS (Commit On Sharing).
5737 * Set/Clear the COS flag in mdt options.
5739 * \param mdt mdt device
5740 * \param val 0 disables COS, other values enable COS
5742 void mdt_enable_cos(struct mdt_device *mdt, int val)
5747 mdt->mdt_opts.mo_cos = !!val;
5748 rc = lu_env_init(&env, LCT_LOCAL);
5749 if (unlikely(rc != 0)) {
5750 CWARN("lu_env initialization failed with rc = %d,"
5751 "cannot sync\n", rc);
5754 mdt_device_sync(&env, mdt);
5759 * Check COS (Commit On Sharing) status.
5761 * Return COS flag status.
5763 * \param mdt mdt device
5765 int mdt_cos_is_enabled(struct mdt_device *mdt)
5767 return mdt->mdt_opts.mo_cos != 0;
5770 static struct lu_device_type_operations mdt_device_type_ops = {
5771 .ldto_device_alloc = mdt_device_alloc,
5772 .ldto_device_free = mdt_device_free,
5773 .ldto_device_fini = mdt_device_fini
5776 static struct lu_device_type mdt_device_type = {
5777 .ldt_tags = LU_DEVICE_MD,
5778 .ldt_name = LUSTRE_MDT_NAME,
5779 .ldt_ops = &mdt_device_type_ops,
5780 .ldt_ctx_tags = LCT_MD_THREAD
5783 static int __init mdt_mod_init(void)
5785 struct lprocfs_static_vars lvars;
5788 rc = lu_kmem_init(mdt_caches);
5792 rc = mds_mod_init();
5796 lprocfs_mdt_init_vars(&lvars);
5797 rc = class_register_type(&mdt_obd_device_ops, NULL,
5798 lvars.module_vars, LUSTRE_MDT_NAME,
5804 lu_kmem_fini(mdt_caches);
5811 static void __exit mdt_mod_exit(void)
5813 class_unregister_type(LUSTRE_MDT_NAME);
5815 lu_kmem_fini(mdt_caches);
5818 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5819 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5820 MODULE_LICENSE("GPL");
5822 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);