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) 2011, 2012, Whamcloud, Inc.
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>
50 # define EXPORT_SYMTAB
52 #define DEBUG_SUBSYSTEM S_MDS
54 #include <linux/module.h>
56 * struct OBD_{ALLOC,FREE}*()
58 #include <obd_support.h>
59 /* struct ptlrpc_request */
60 #include <lustre_net.h>
61 /* struct obd_export */
62 #include <lustre_export.h>
63 /* struct obd_device */
66 #include <dt_object.h>
67 #include <lustre_mds.h>
68 #include <lustre_mdt.h>
69 #include "mdt_internal.h"
70 #ifdef HAVE_QUOTA_SUPPORT
71 # include <lustre_quota.h>
73 #include <lustre_acl.h>
74 #include <lustre_param.h>
75 #include <lustre_fsfilt.h>
77 mdl_mode_t mdt_mdl_lock_modes[] = {
78 [LCK_MINMODE] = MDL_MINMODE,
85 [LCK_GROUP] = MDL_GROUP
88 ldlm_mode_t mdt_dlm_lock_modes[] = {
89 [MDL_MINMODE] = LCK_MINMODE,
96 [MDL_GROUP] = LCK_GROUP
100 * Initialized in mdt_mod_init().
102 static unsigned long mdt_num_threads;
103 static unsigned long mdt_min_threads;
104 static unsigned long mdt_max_threads;
106 /* ptlrpc request handler for MDT. All handlers are
107 * grouped into several slices - struct mdt_opc_slice,
108 * and stored in an array - mdt_handlers[].
111 /* The name of this handler. */
113 /* Fail id for this handler, checked at the beginning of this handler*/
115 /* Operation code for this handler */
117 /* flags are listed in enum mdt_handler_flags below. */
119 /* The actual handler function to execute. */
120 int (*mh_act)(struct mdt_thread_info *info);
121 /* Request format for this request. */
122 const struct req_format *mh_fmt;
125 enum mdt_handler_flags {
127 * struct mdt_body is passed in the incoming message, and object
128 * identified by this fid exists on disk.
130 * "habeo corpus" == "I have a body"
132 HABEO_CORPUS = (1 << 0),
134 * struct ldlm_request is passed in the incoming message.
136 * "habeo clavis" == "I have a key"
138 HABEO_CLAVIS = (1 << 1),
140 * this request has fixed reply format, so that reply message can be
141 * packed by generic code.
143 * "habeo refero" == "I have a reply"
145 HABEO_REFERO = (1 << 2),
147 * this request will modify something, so check whether the filesystem
148 * is readonly or not, then return -EROFS to client asap if necessary.
150 * "mutabor" == "I shall modify"
155 struct mdt_opc_slice {
158 struct mdt_handler *mos_hs;
161 static struct mdt_opc_slice mdt_regular_handlers[];
162 static struct mdt_opc_slice mdt_readpage_handlers[];
163 static struct mdt_opc_slice mdt_xmds_handlers[];
164 static struct mdt_opc_slice mdt_seq_handlers[];
165 static struct mdt_opc_slice mdt_fld_handlers[];
167 static struct mdt_device *mdt_dev(struct lu_device *d);
168 static int mdt_regular_handle(struct ptlrpc_request *req);
169 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
170 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
171 struct getinfo_fid2path *fp);
173 static const struct lu_object_operations mdt_obj_ops;
175 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
179 return (rep->lock_policy_res1 & flag);
182 void mdt_clear_disposition(struct mdt_thread_info *info,
183 struct ldlm_reply *rep, int flag)
186 info->mti_opdata &= ~flag;
188 rep->lock_policy_res1 &= ~flag;
191 void mdt_set_disposition(struct mdt_thread_info *info,
192 struct ldlm_reply *rep, int flag)
195 info->mti_opdata |= flag;
197 rep->lock_policy_res1 |= flag;
200 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
202 lh->mlh_pdo_hash = 0;
203 lh->mlh_reg_mode = lm;
204 lh->mlh_type = MDT_REG_LOCK;
207 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
208 const char *name, int namelen)
210 lh->mlh_reg_mode = lm;
211 lh->mlh_type = MDT_PDO_LOCK;
213 if (name != NULL && (name[0] != '\0')) {
214 LASSERT(namelen > 0);
215 lh->mlh_pdo_hash = full_name_hash(name, namelen);
217 LASSERT(namelen == 0);
218 lh->mlh_pdo_hash = 0ull;
222 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
223 struct mdt_lock_handle *lh)
229 * Any dir access needs couple of locks:
231 * 1) on part of dir we gonna take lookup/modify;
233 * 2) on whole dir to protect it from concurrent splitting and/or to
234 * flush client's cache for readdir().
236 * so, for a given mode and object this routine decides what lock mode
237 * to use for lock #2:
239 * 1) if caller's gonna lookup in dir then we need to protect dir from
240 * being splitted only - LCK_CR
242 * 2) if caller's gonna modify dir then we need to protect dir from
243 * being splitted and to flush cache - LCK_CW
245 * 3) if caller's gonna modify dir and that dir seems ready for
246 * splitting then we need to protect it from any type of access
247 * (lookup/modify/split) - LCK_EX --bzzz
250 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
251 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
254 * Ask underlaying level its opinion about preferable PDO lock mode
255 * having access type passed as regular lock mode:
257 * - MDL_MINMODE means that lower layer does not want to specify lock
260 * - MDL_NL means that no PDO lock should be taken. This is used in some
261 * cases. Say, for non-splittable directories no need to use PDO locks
264 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
265 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
267 if (mode != MDL_MINMODE) {
268 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
271 * Lower layer does not want to specify locking mode. We do it
272 * our selves. No special protection is needed, just flush
273 * client's cache on modification and allow concurrent
276 switch (lh->mlh_reg_mode) {
278 lh->mlh_pdo_mode = LCK_EX;
281 lh->mlh_pdo_mode = LCK_CR;
284 lh->mlh_pdo_mode = LCK_CW;
287 CERROR("Not expected lock type (0x%x)\n",
288 (int)lh->mlh_reg_mode);
293 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
297 static int mdt_getstatus(struct mdt_thread_info *info)
299 struct mdt_device *mdt = info->mti_mdt;
300 struct md_device *next = mdt->mdt_child;
301 struct mdt_body *repbody;
306 rc = mdt_check_ucred(info);
308 RETURN(err_serious(rc));
310 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
311 RETURN(err_serious(-ENOMEM));
313 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
314 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
318 repbody->valid |= OBD_MD_FLID;
320 if (mdt->mdt_opts.mo_mds_capa &&
321 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
322 struct mdt_object *root;
323 struct lustre_capa *capa;
325 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
327 RETURN(PTR_ERR(root));
329 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
331 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
332 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
334 mdt_object_put(info->mti_env, root);
336 repbody->valid |= OBD_MD_FLMDSCAPA;
342 static int mdt_statfs(struct mdt_thread_info *info)
344 struct ptlrpc_request *req = mdt_info_req(info);
345 struct md_device *next = info->mti_mdt->mdt_child;
346 struct ptlrpc_service *svc;
347 struct obd_statfs *osfs;
352 svc = info->mti_pill->rc_req->rq_rqbd->rqbd_service;
354 /* This will trigger a watchdog timeout */
355 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
356 (MDT_SERVICE_WATCHDOG_FACTOR *
357 at_get(&svc->srv_at_estimate)) + 1);
359 rc = mdt_check_ucred(info);
361 RETURN(err_serious(rc));
363 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
364 rc = err_serious(-ENOMEM);
366 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
367 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
371 mdt_counter_incr(req->rq_export, LPROC_MDT_STATFS);
377 * Pack SOM attributes into the reply.
378 * Call under a DLM UPDATE lock.
380 static void mdt_pack_size2body(struct mdt_thread_info *info,
381 struct mdt_object *mo)
384 struct md_attr *ma = &info->mti_attr;
386 LASSERT(ma->ma_attr.la_valid & LA_MODE);
387 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
389 /* Check if Size-on-MDS is supported, if this is a regular file,
390 * if SOM is enabled on the object and if SOM cache exists and valid.
391 * Otherwise do not pack Size-on-MDS attributes to the reply. */
392 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
393 !S_ISREG(ma->ma_attr.la_mode) ||
394 !mdt_object_is_som_enabled(mo) ||
395 !(ma->ma_valid & MA_SOM))
398 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
399 b->size = ma->ma_som->msd_size;
400 b->blocks = ma->ma_som->msd_blocks;
403 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
404 const struct lu_attr *attr, const struct lu_fid *fid)
406 struct md_attr *ma = &info->mti_attr;
408 LASSERT(ma->ma_valid & MA_INODE);
410 b->atime = attr->la_atime;
411 b->mtime = attr->la_mtime;
412 b->ctime = attr->la_ctime;
413 b->mode = attr->la_mode;
414 b->size = attr->la_size;
415 b->blocks = attr->la_blocks;
416 b->uid = attr->la_uid;
417 b->gid = attr->la_gid;
418 b->flags = attr->la_flags;
419 b->nlink = attr->la_nlink;
420 b->rdev = attr->la_rdev;
422 /*XXX should pack the reply body according to lu_valid*/
423 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
424 OBD_MD_FLGID | OBD_MD_FLTYPE |
425 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
426 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
428 if (!S_ISREG(attr->la_mode)) {
429 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
430 } else if (ma->ma_need & MA_LOV && ma->ma_lmm_size == 0) {
431 /* means no objects are allocated on osts. */
432 LASSERT(!(ma->ma_valid & MA_LOV));
433 /* just ignore blocks occupied by extend attributes on MDS */
435 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
436 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
441 b->valid |= OBD_MD_FLID;
443 /* FIXME: these should be fixed when new igif ready.*/
444 b->ino = fid_oid(fid); /* 1.6 compatibility */
445 b->generation = fid_ver(fid); /* 1.6 compatibility */
446 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
448 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
449 PFID(fid), b->nlink, b->mode, b->size);
453 mdt_body_reverse_idmap(info, b);
455 if (b->valid & OBD_MD_FLSIZE)
456 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
457 PFID(fid), (unsigned long long)b->size);
460 static inline int mdt_body_has_lov(const struct lu_attr *la,
461 const struct mdt_body *body)
463 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
464 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
467 void mdt_client_compatibility(struct mdt_thread_info *info)
469 struct mdt_body *body;
470 struct ptlrpc_request *req = mdt_info_req(info);
471 struct obd_export *exp = req->rq_export;
472 struct md_attr *ma = &info->mti_attr;
473 struct lu_attr *la = &ma->ma_attr;
476 if (exp->exp_connect_flags & OBD_CONNECT_LAYOUTLOCK)
477 /* the client can deal with 16-bit lmm_stripe_count */
480 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
482 if (!mdt_body_has_lov(la, body))
485 /* now we have a reply with a lov for a client not compatible with the
486 * layout lock so we have to clean the layout generation number */
487 if (S_ISREG(la->la_mode))
488 ma->ma_lmm->lmm_layout_gen = 0;
493 static int mdt_getattr_internal(struct mdt_thread_info *info,
494 struct mdt_object *o, int ma_need)
496 struct md_object *next = mdt_object_child(o);
497 const struct mdt_body *reqbody = info->mti_body;
498 struct ptlrpc_request *req = mdt_info_req(info);
499 struct md_attr *ma = &info->mti_attr;
500 struct lu_attr *la = &ma->ma_attr;
501 struct req_capsule *pill = info->mti_pill;
502 const struct lu_env *env = info->mti_env;
503 struct mdt_body *repbody;
504 struct lu_buf *buffer = &info->mti_buf;
508 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
509 RETURN(err_serious(-ENOMEM));
511 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
515 rc = mdt_object_exists(o);
517 /* This object is located on remote node.*/
518 repbody->fid1 = *mdt_object_fid(o);
519 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
523 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
524 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
526 /* If it is dir object and client require MEA, then we got MEA */
527 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
528 reqbody->valid & OBD_MD_MEA) {
529 /* Assumption: MDT_MD size is enough for lmv size. */
530 ma->ma_lmv = buffer->lb_buf;
531 ma->ma_lmv_size = buffer->lb_len;
532 ma->ma_need = MA_LMV | MA_INODE;
534 ma->ma_lmm = buffer->lb_buf;
535 ma->ma_lmm_size = buffer->lb_len;
536 ma->ma_need = MA_LOV | MA_INODE;
539 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
540 reqbody->valid & OBD_MD_FLDIREA &&
541 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
542 /* get default stripe info for this dir. */
543 ma->ma_need |= MA_LOV_DEF;
545 ma->ma_need |= ma_need;
546 if (ma->ma_need & MA_SOM)
547 ma->ma_som = &info->mti_u.som.data;
549 rc = mo_attr_get(env, next, ma);
551 CERROR("getattr error for "DFID": %d\n",
552 PFID(mdt_object_fid(o)), rc);
556 if (likely(ma->ma_valid & MA_INODE))
557 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
561 if (mdt_body_has_lov(la, reqbody)) {
562 if (ma->ma_valid & MA_LOV) {
563 LASSERT(ma->ma_lmm_size);
564 mdt_dump_lmm(D_INFO, ma->ma_lmm);
565 repbody->eadatasize = ma->ma_lmm_size;
566 if (S_ISDIR(la->la_mode))
567 repbody->valid |= OBD_MD_FLDIREA;
569 repbody->valid |= OBD_MD_FLEASIZE;
571 if (ma->ma_valid & MA_LMV) {
572 LASSERT(S_ISDIR(la->la_mode));
573 repbody->eadatasize = ma->ma_lmv_size;
574 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
576 } else if (S_ISLNK(la->la_mode) &&
577 reqbody->valid & OBD_MD_LINKNAME) {
578 buffer->lb_buf = ma->ma_lmm;
579 /* eadatasize from client includes NULL-terminator, so
580 * there is no need to read it */
581 buffer->lb_len = reqbody->eadatasize - 1;
582 rc = mo_readlink(env, next, buffer);
583 if (unlikely(rc <= 0)) {
584 CERROR("readlink failed: %d\n", rc);
587 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
589 repbody->valid |= OBD_MD_LINKNAME;
590 /* we need to report back size with NULL-terminator
591 * because client expects that */
592 repbody->eadatasize = rc + 1;
593 if (repbody->eadatasize != reqbody->eadatasize)
594 CERROR("Read shorter link %d than expected "
595 "%d\n", rc, reqbody->eadatasize - 1);
597 ((char*)ma->ma_lmm)[rc] = 0;
598 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
599 (char*)ma->ma_lmm, rc);
604 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
605 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
606 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
607 repbody->valid |= OBD_MD_FLMODEASIZE;
608 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
609 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
610 repbody->max_cookiesize);
613 if (exp_connect_rmtclient(info->mti_exp) &&
614 reqbody->valid & OBD_MD_FLRMTPERM) {
615 void *buf = req_capsule_server_get(pill, &RMF_ACL);
617 /* mdt_getattr_lock only */
618 rc = mdt_pack_remote_perm(info, o, buf);
620 repbody->valid &= ~OBD_MD_FLRMTPERM;
621 repbody->aclsize = 0;
624 repbody->valid |= OBD_MD_FLRMTPERM;
625 repbody->aclsize = sizeof(struct mdt_remote_perm);
628 #ifdef CONFIG_FS_POSIX_ACL
629 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
630 (reqbody->valid & OBD_MD_FLACL)) {
631 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
632 buffer->lb_len = req_capsule_get_size(pill,
633 &RMF_ACL, RCL_SERVER);
634 if (buffer->lb_len > 0) {
635 rc = mo_xattr_get(env, next, buffer,
636 XATTR_NAME_ACL_ACCESS);
638 if (rc == -ENODATA) {
639 repbody->aclsize = 0;
640 repbody->valid |= OBD_MD_FLACL;
642 } else if (rc == -EOPNOTSUPP) {
645 CERROR("got acl size: %d\n", rc);
648 repbody->aclsize = rc;
649 repbody->valid |= OBD_MD_FLACL;
656 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
657 info->mti_mdt->mdt_opts.mo_mds_capa &&
658 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
659 struct lustre_capa *capa;
661 capa = req_capsule_server_get(pill, &RMF_CAPA1);
663 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
664 rc = mo_capa_get(env, next, capa, 0);
667 repbody->valid |= OBD_MD_FLMDSCAPA;
672 mdt_counter_incr(req->rq_export, LPROC_MDT_GETATTR);
677 static int mdt_renew_capa(struct mdt_thread_info *info)
679 struct mdt_object *obj = info->mti_object;
680 struct mdt_body *body;
681 struct lustre_capa *capa, *c;
685 /* if object doesn't exist, or server has disabled capability,
686 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
689 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
690 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA))
693 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
694 LASSERT(body != NULL);
696 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
699 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
703 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
705 body->valid |= OBD_MD_FLOSSCAPA;
709 static int mdt_getattr(struct mdt_thread_info *info)
711 struct mdt_object *obj = info->mti_object;
712 struct req_capsule *pill = info->mti_pill;
713 struct mdt_body *reqbody;
714 struct mdt_body *repbody;
719 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
722 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
723 rc = req_capsule_server_pack(pill);
725 RETURN(err_serious(rc));
726 rc = mdt_renew_capa(info);
727 GOTO(out_shrink, rc);
730 LASSERT(obj != NULL);
731 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
733 mode = lu_object_attr(&obj->mot_obj.mo_lu);
735 /* old clients may not report needed easize, use max value then */
736 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
737 reqbody->eadatasize == 0 ?
738 info->mti_mdt->mdt_max_mdsize :
739 reqbody->eadatasize);
741 rc = req_capsule_server_pack(pill);
742 if (unlikely(rc != 0))
743 RETURN(err_serious(rc));
745 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
746 LASSERT(repbody != NULL);
747 repbody->eadatasize = 0;
748 repbody->aclsize = 0;
750 if (reqbody->valid & OBD_MD_FLRMTPERM)
751 rc = mdt_init_ucred(info, reqbody);
753 rc = mdt_check_ucred(info);
755 GOTO(out_shrink, rc);
757 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
758 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
761 * Don't check capability at all, because rename might getattr for
762 * remote obj, and at that time no capability is available.
764 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
765 rc = mdt_getattr_internal(info, obj, 0);
766 if (reqbody->valid & OBD_MD_FLRMTPERM)
767 mdt_exit_ucred(info);
771 mdt_client_compatibility(info);
772 rc2 = mdt_fix_reply(info);
778 static int mdt_is_subdir(struct mdt_thread_info *info)
780 struct mdt_object *o = info->mti_object;
781 struct req_capsule *pill = info->mti_pill;
782 const struct mdt_body *body = info->mti_body;
783 struct mdt_body *repbody;
789 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
792 * We save last checked parent fid to @repbody->fid1 for remote
795 LASSERT(fid_is_sane(&body->fid2));
796 LASSERT(mdt_object_exists(o) > 0);
797 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
798 &body->fid2, &repbody->fid1);
799 if (rc == 0 || rc == -EREMOTE)
800 repbody->valid |= OBD_MD_FLID;
805 static int mdt_raw_lookup(struct mdt_thread_info *info,
806 struct mdt_object *parent,
807 const struct lu_name *lname,
808 struct ldlm_reply *ldlm_rep)
810 struct md_object *next = mdt_object_child(info->mti_object);
811 const struct mdt_body *reqbody = info->mti_body;
812 struct lu_fid *child_fid = &info->mti_tmp_fid1;
813 struct mdt_body *repbody;
817 if (reqbody->valid != OBD_MD_FLID)
820 LASSERT(!info->mti_cross_ref);
822 /* Only got the fid of this obj by name */
824 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
827 /* XXX is raw_lookup possible as intent operation? */
830 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
833 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
835 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
838 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
839 repbody->fid1 = *child_fid;
840 repbody->valid = OBD_MD_FLID;
846 * UPDATE lock should be taken against parent, and be release before exit;
847 * child_bits lock should be taken against child, and be returned back:
848 * (1)normal request should release the child lock;
849 * (2)intent request will grant the lock to client.
851 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
852 struct mdt_lock_handle *lhc,
854 struct ldlm_reply *ldlm_rep)
856 struct ptlrpc_request *req = mdt_info_req(info);
857 struct mdt_body *reqbody = NULL;
858 struct mdt_object *parent = info->mti_object;
859 struct mdt_object *child;
860 struct md_object *next = mdt_object_child(parent);
861 struct lu_fid *child_fid = &info->mti_tmp_fid1;
862 struct lu_name *lname = NULL;
863 const char *name = NULL;
865 struct mdt_lock_handle *lhp = NULL;
866 struct ldlm_lock *lock;
867 struct ldlm_res_id *res_id;
874 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
875 LASSERT(ergo(is_resent,
876 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
878 LASSERT(parent != NULL);
879 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
881 RETURN(err_serious(-EFAULT));
883 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
885 if (!info->mti_cross_ref) {
887 * XXX: Check for "namelen == 0" is for getattr by fid
888 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
889 * that is the name must contain at least one character and
890 * the terminating '\0'
893 reqbody = req_capsule_client_get(info->mti_pill,
895 if (unlikely(reqbody == NULL))
896 RETURN(err_serious(-EFAULT));
898 if (unlikely(!fid_is_sane(&reqbody->fid2)))
899 RETURN(err_serious(-EINVAL));
902 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
904 PFID(mdt_object_fid(parent)),
905 PFID(&reqbody->fid2), ldlm_rep);
907 lname = mdt_name(info->mti_env, (char *)name, namelen);
908 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
909 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
913 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
915 rc = mdt_object_exists(parent);
916 if (unlikely(rc == 0)) {
917 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
918 &parent->mot_obj.mo_lu,
919 "Parent doesn't exist!\n");
921 } else if (!info->mti_cross_ref) {
922 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
923 PFID(mdt_object_fid(parent)));
926 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
934 if (info->mti_cross_ref) {
935 /* Only getattr on the child. Parent is on another node. */
936 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
938 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
939 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
942 /* Do not take lock for resent case. */
943 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
944 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
945 lhc->mlh_reg_lh.cookie);
946 LASSERT(fid_res_name_eq(mdt_object_fid(child),
947 &lock->l_resource->lr_name));
951 mdt_lock_handle_init(lhc);
952 mdt_lock_reg_init(lhc, LCK_PR);
955 * Object's name is on another MDS, no lookup lock is
956 * needed here but update is.
958 child_bits &= ~MDS_INODELOCK_LOOKUP;
959 child_bits |= MDS_INODELOCK_UPDATE;
961 rc = mdt_object_lock(info, child, lhc, child_bits,
965 /* Finally, we can get attr for child. */
966 mdt_set_capainfo(info, 0, mdt_object_fid(child),
968 rc = mdt_getattr_internal(info, child, 0);
969 if (unlikely(rc != 0))
970 mdt_object_unlock(info, child, lhc, 1);
976 /* step 1: lock parent only if parent is a directory */
977 if (S_ISDIR(lu_object_attr(&parent->mot_obj.mo_lu))) {
978 lhp = &info->mti_lh[MDT_LH_PARENT];
979 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
980 rc = mdt_object_lock(info, parent, lhp,
981 MDS_INODELOCK_UPDATE,
983 if (unlikely(rc != 0))
987 /* step 2: lookup child's fid by name */
989 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
994 mdt_set_disposition(info, ldlm_rep,
996 GOTO(out_parent, rc);
998 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1000 *child_fid = reqbody->fid2;
1001 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1005 *step 3: find the child object by fid & lock it.
1006 * regardless if it is local or remote.
1008 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1010 if (unlikely(IS_ERR(child)))
1011 GOTO(out_parent, rc = PTR_ERR(child));
1013 /* Do not take lock for resent case. */
1014 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1015 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1016 lhc->mlh_reg_lh.cookie);
1018 res_id = &lock->l_resource->lr_name;
1019 if (!fid_res_name_eq(mdt_object_fid(child),
1020 &lock->l_resource->lr_name)) {
1021 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1022 &lock->l_resource->lr_name),
1023 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1024 (unsigned long)res_id->name[0],
1025 (unsigned long)res_id->name[1],
1026 (unsigned long)res_id->name[2],
1027 PFID(mdt_object_fid(parent)));
1028 CWARN("Although resent, but still not get child lock"
1029 "parent:"DFID" child:"DFID"\n",
1030 PFID(mdt_object_fid(parent)),
1031 PFID(mdt_object_fid(child)));
1032 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1033 LDLM_LOCK_PUT(lock);
1036 LDLM_LOCK_PUT(lock);
1040 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1041 mdt_lock_handle_init(lhc);
1042 if (child_bits == MDS_INODELOCK_LAYOUT)
1043 mdt_lock_reg_init(lhc, LCK_CR);
1045 mdt_lock_reg_init(lhc, LCK_PR);
1047 if (mdt_object_exists(child) == 0) {
1048 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1049 &child->mot_obj.mo_lu,
1050 "Object doesn't exist!\n");
1051 GOTO(out_child, rc = -ENOENT);
1054 if (!(child_bits & MDS_INODELOCK_UPDATE)) {
1055 struct md_attr *ma = &info->mti_attr;
1058 ma->ma_need = MA_INODE;
1059 rc = mo_attr_get(info->mti_env,
1060 mdt_object_child(child), ma);
1061 if (unlikely(rc != 0))
1062 GOTO(out_child, rc);
1064 /* layout lock is used only on regular files */
1065 if ((ma->ma_valid & MA_INODE) &&
1066 (ma->ma_attr.la_valid & LA_MODE) &&
1067 !S_ISREG(ma->ma_attr.la_mode))
1068 child_bits &= ~MDS_INODELOCK_LAYOUT;
1070 /* If the file has not been changed for some time, we
1071 * return not only a LOOKUP lock, but also an UPDATE
1072 * lock and this might save us RPC on later STAT. For
1073 * directories, it also let negative dentry starts
1074 * working for this dir. */
1075 if (ma->ma_valid & MA_INODE &&
1076 ma->ma_attr.la_valid & LA_CTIME &&
1077 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1078 ma->ma_attr.la_ctime < cfs_time_current_sec())
1079 child_bits |= MDS_INODELOCK_UPDATE;
1082 rc = mdt_object_lock(info, child, lhc, child_bits,
1085 if (unlikely(rc != 0))
1086 GOTO(out_child, rc);
1089 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1090 /* Get MA_SOM attributes if update lock is given. */
1092 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1093 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1096 /* finally, we can get attr for child. */
1097 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1098 rc = mdt_getattr_internal(info, child, ma_need);
1099 if (unlikely(rc != 0)) {
1100 mdt_object_unlock(info, child, lhc, 1);
1102 /* Debugging code. */
1103 res_id = &lock->l_resource->lr_name;
1104 LDLM_DEBUG(lock, "Returning lock to client");
1105 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1106 &lock->l_resource->lr_name),
1107 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1108 (unsigned long)res_id->name[0],
1109 (unsigned long)res_id->name[1],
1110 (unsigned long)res_id->name[2],
1111 PFID(mdt_object_fid(child)));
1112 mdt_pack_size2body(info, child);
1115 LDLM_LOCK_PUT(lock);
1119 mdt_object_put(info->mti_env, child);
1122 mdt_object_unlock(info, parent, lhp, 1);
1126 /* normal handler: should release the child lock */
1127 static int mdt_getattr_name(struct mdt_thread_info *info)
1129 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1130 struct mdt_body *reqbody;
1131 struct mdt_body *repbody;
1135 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1136 LASSERT(reqbody != NULL);
1137 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1138 LASSERT(repbody != NULL);
1140 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1141 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1142 repbody->eadatasize = 0;
1143 repbody->aclsize = 0;
1145 rc = mdt_init_ucred(info, reqbody);
1147 GOTO(out_shrink, rc);
1149 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1150 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1151 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1152 lhc->mlh_reg_lh.cookie = 0;
1154 mdt_exit_ucred(info);
1157 mdt_client_compatibility(info);
1158 rc2 = mdt_fix_reply(info);
1164 static const struct lu_device_operations mdt_lu_ops;
1166 static int lu_device_is_mdt(struct lu_device *d)
1168 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1171 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1172 void *karg, void *uarg);
1174 static int mdt_set_info(struct mdt_thread_info *info)
1176 struct ptlrpc_request *req = mdt_info_req(info);
1179 int keylen, vallen, rc = 0;
1182 rc = req_capsule_server_pack(info->mti_pill);
1186 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1188 DEBUG_REQ(D_HA, req, "no set_info key");
1192 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1195 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1197 DEBUG_REQ(D_HA, req, "no set_info val");
1201 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1204 /* Swab any part of val you need to here */
1205 if (KEY_IS(KEY_READ_ONLY)) {
1207 lustre_msg_set_status(req->rq_repmsg, 0);
1209 cfs_spin_lock(&req->rq_export->exp_lock);
1211 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1213 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1214 cfs_spin_unlock(&req->rq_export->exp_lock);
1216 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1217 struct changelog_setinfo *cs =
1218 (struct changelog_setinfo *)val;
1219 if (vallen != sizeof(*cs)) {
1220 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1223 if (ptlrpc_req_need_swab(req)) {
1224 __swab64s(&cs->cs_recno);
1225 __swab32s(&cs->cs_id);
1228 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1230 lustre_msg_set_status(req->rq_repmsg, rc);
1238 static int mdt_connect(struct mdt_thread_info *info)
1241 struct ptlrpc_request *req;
1243 req = mdt_info_req(info);
1244 rc = target_handle_connect(req);
1246 LASSERT(req->rq_export != NULL);
1247 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1248 rc = mdt_init_sec_level(info);
1250 rc = mdt_init_idmap(info);
1252 obd_disconnect(class_export_get(req->rq_export));
1254 rc = err_serious(rc);
1259 static int mdt_disconnect(struct mdt_thread_info *info)
1264 rc = target_handle_disconnect(mdt_info_req(info));
1266 rc = err_serious(rc);
1270 static int mdt_sendpage(struct mdt_thread_info *info,
1271 struct lu_rdpg *rdpg, int nob)
1273 struct ptlrpc_request *req = mdt_info_req(info);
1274 struct obd_export *exp = req->rq_export;
1275 struct ptlrpc_bulk_desc *desc;
1276 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1283 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1288 for (i = 0, tmpcount = nob;
1289 i < rdpg->rp_npages && tmpcount > 0; i++, tmpcount -= tmpsize) {
1290 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1291 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1294 LASSERT(desc->bd_nob == nob);
1295 rc = target_bulk_io(exp, desc, lwi);
1296 ptlrpc_free_bulk(desc);
1300 #ifdef HAVE_SPLIT_SUPPORT
1302 * Retrieve dir entry from the page and insert it to the slave object, actually,
1303 * this should be in osd layer, but since it will not in the final product, so
1304 * just do it here and do not define more moo api anymore for this.
1306 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1309 struct mdt_object *object = info->mti_object;
1310 struct lu_fid *lf = &info->mti_tmp_fid2;
1311 struct md_attr *ma = &info->mti_attr;
1312 struct lu_dirpage *dp;
1313 struct lu_dirent *ent;
1314 int rc = 0, offset = 0;
1317 /* Make sure we have at least one entry. */
1322 * Disable trans for this name insert, since it will include many trans
1325 info->mti_no_need_trans = 1;
1327 * When write_dir_page, no need update parent's ctime,
1328 * and no permission check for name_insert.
1330 ma->ma_attr.la_ctime = 0;
1331 ma->ma_attr.la_valid = LA_MODE;
1332 ma->ma_valid = MA_INODE;
1335 dp = page_address(page);
1336 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1338 for (ent = lu_dirent_start(dp); ent != NULL;
1339 ent = lu_dirent_next(ent)) {
1340 struct lu_name *lname;
1343 if (le16_to_cpu(ent->lde_namelen) == 0)
1346 fid_le_to_cpu(lf, &ent->lde_fid);
1347 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1348 ma->ma_attr.la_mode = S_IFDIR;
1350 ma->ma_attr.la_mode = 0;
1351 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1353 GOTO(out, rc = -ENOMEM);
1355 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1356 lname = mdt_name(info->mti_env, name,
1357 le16_to_cpu(ent->lde_namelen));
1358 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1359 rc = mdo_name_insert(info->mti_env,
1360 md_object_next(&object->mot_obj),
1362 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1364 CERROR("Can't insert %*.*s, rc %d\n",
1365 le16_to_cpu(ent->lde_namelen),
1366 le16_to_cpu(ent->lde_namelen),
1371 offset += lu_dirent_size(ent);
1381 static int mdt_bulk_timeout(void *data)
1385 CERROR("mdt bulk transfer timeout \n");
1390 static int mdt_writepage(struct mdt_thread_info *info)
1392 struct ptlrpc_request *req = mdt_info_req(info);
1393 struct mdt_body *reqbody;
1394 struct l_wait_info *lwi;
1395 struct ptlrpc_bulk_desc *desc;
1401 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1402 if (reqbody == NULL)
1403 RETURN(err_serious(-EFAULT));
1405 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1407 RETURN(err_serious(-ENOMEM));
1409 /* allocate the page for the desc */
1410 page = cfs_alloc_page(CFS_ALLOC_STD);
1412 GOTO(desc_cleanup, rc = -ENOMEM);
1414 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1415 (int)reqbody->size, (int)reqbody->nlink);
1417 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1418 (int)reqbody->nlink);
1420 rc = sptlrpc_svc_prep_bulk(req, desc);
1422 GOTO(cleanup_page, rc);
1424 * Check if client was evicted while we were doing i/o before touching
1429 GOTO(cleanup_page, rc = -ENOMEM);
1431 if (desc->bd_export->exp_failed)
1434 rc = ptlrpc_start_bulk_transfer (desc);
1436 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1437 mdt_bulk_timeout, desc);
1438 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1439 desc->bd_export->exp_failed, lwi);
1440 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1441 if (rc == -ETIMEDOUT) {
1442 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1443 ptlrpc_abort_bulk(desc);
1444 } else if (desc->bd_export->exp_failed) {
1445 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1447 ptlrpc_abort_bulk(desc);
1448 } else if (!desc->bd_success ||
1449 desc->bd_nob_transferred != desc->bd_nob) {
1450 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1452 "truncated" : "network error on",
1453 desc->bd_nob_transferred, desc->bd_nob);
1454 /* XXX should this be a different errno? */
1458 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1461 GOTO(cleanup_lwi, rc);
1462 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1467 cfs_free_page(page);
1469 ptlrpc_free_bulk(desc);
1474 static int mdt_readpage(struct mdt_thread_info *info)
1476 struct mdt_object *object = info->mti_object;
1477 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1478 struct mdt_body *reqbody;
1479 struct mdt_body *repbody;
1484 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1485 RETURN(err_serious(-ENOMEM));
1487 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1488 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1489 if (reqbody == NULL || repbody == NULL)
1490 RETURN(err_serious(-EFAULT));
1493 * prepare @rdpg before calling lower layers and transfer itself. Here
1494 * reqbody->size contains offset of where to start to read and
1495 * reqbody->nlink contains number bytes to read.
1497 rdpg->rp_hash = reqbody->size;
1498 if (rdpg->rp_hash != reqbody->size) {
1499 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1500 rdpg->rp_hash, reqbody->size);
1504 rdpg->rp_attrs = reqbody->mode;
1505 if (info->mti_exp->exp_connect_flags & OBD_CONNECT_64BITHASH)
1506 rdpg->rp_attrs |= LUDA_64BITHASH;
1507 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1508 PTLRPC_MAX_BRW_SIZE);
1509 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1) >>
1511 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1512 if (rdpg->rp_pages == NULL)
1515 for (i = 0; i < rdpg->rp_npages; ++i) {
1516 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1517 if (rdpg->rp_pages[i] == NULL)
1518 GOTO(free_rdpg, rc = -ENOMEM);
1521 /* call lower layers to fill allocated pages with directory data */
1522 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1524 GOTO(free_rdpg, rc);
1526 /* send pages to client */
1527 rc = mdt_sendpage(info, rdpg, rc);
1532 for (i = 0; i < rdpg->rp_npages; i++)
1533 if (rdpg->rp_pages[i] != NULL)
1534 cfs_free_page(rdpg->rp_pages[i]);
1535 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1537 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1543 static int mdt_reint_internal(struct mdt_thread_info *info,
1544 struct mdt_lock_handle *lhc,
1547 struct req_capsule *pill = info->mti_pill;
1548 struct md_quota *mq = md_quota(info->mti_env);
1549 struct mdt_body *repbody;
1554 rc = mdt_reint_unpack(info, op);
1556 CERROR("Can't unpack reint, rc %d\n", rc);
1557 RETURN(err_serious(rc));
1560 /* for replay (no_create) lmm is not needed, client has it already */
1561 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1562 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1563 info->mti_rr.rr_eadatalen);
1565 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1566 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1567 info->mti_mdt->mdt_max_cookiesize);
1569 rc = req_capsule_server_pack(pill);
1571 CERROR("Can't pack response, rc %d\n", rc);
1572 RETURN(err_serious(rc));
1575 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1576 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1578 repbody->eadatasize = 0;
1579 repbody->aclsize = 0;
1582 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1584 /* for replay no cookkie / lmm need, because client have this already */
1585 if (info->mti_spec.no_create)
1586 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1587 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1589 rc = mdt_init_ucred_reint(info);
1591 GOTO(out_shrink, rc);
1593 rc = mdt_fix_attr_ucred(info, op);
1595 GOTO(out_ucred, rc = err_serious(rc));
1597 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1598 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1599 GOTO(out_ucred, rc);
1601 mq->mq_exp = info->mti_exp;
1602 rc = mdt_reint_rec(info, lhc);
1605 mdt_exit_ucred(info);
1607 mdt_client_compatibility(info);
1608 rc2 = mdt_fix_reply(info);
1614 static long mdt_reint_opcode(struct mdt_thread_info *info,
1615 const struct req_format **fmt)
1617 struct mdt_rec_reint *rec;
1620 opc = err_serious(-EFAULT);
1621 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1623 opc = rec->rr_opcode;
1624 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1625 if (opc < REINT_MAX && fmt[opc] != NULL)
1626 req_capsule_extend(info->mti_pill, fmt[opc]);
1628 CERROR("Unsupported opc: %ld\n", opc);
1629 opc = err_serious(opc);
1635 static int mdt_reint(struct mdt_thread_info *info)
1640 static const struct req_format *reint_fmts[REINT_MAX] = {
1641 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1642 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1643 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1644 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1645 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1646 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1647 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1652 opc = mdt_reint_opcode(info, reint_fmts);
1655 * No lock possible here from client to pass it to reint code
1658 rc = mdt_reint_internal(info, NULL, opc);
1663 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1667 /* this should sync the whole device */
1668 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1670 struct dt_device *dt = mdt->mdt_bottom;
1674 rc = dt->dd_ops->dt_sync(env, dt);
1678 /* this should sync this object */
1679 static int mdt_object_sync(struct mdt_thread_info *info)
1681 struct md_object *next;
1685 if (!mdt_object_exists(info->mti_object)) {
1686 CWARN("Non existing object "DFID"!\n",
1687 PFID(mdt_object_fid(info->mti_object)));
1690 next = mdt_object_child(info->mti_object);
1691 rc = mo_object_sync(info->mti_env, next);
1696 static int mdt_sync(struct mdt_thread_info *info)
1698 struct ptlrpc_request *req = mdt_info_req(info);
1699 struct req_capsule *pill = info->mti_pill;
1700 struct mdt_body *body;
1704 /* The fid may be zero, so we req_capsule_set manually */
1705 req_capsule_set(pill, &RQF_MDS_SYNC);
1707 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1709 RETURN(err_serious(-EINVAL));
1711 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1712 RETURN(err_serious(-ENOMEM));
1714 if (fid_seq(&body->fid1) == 0) {
1715 /* sync the whole device */
1716 rc = req_capsule_server_pack(pill);
1718 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1720 rc = err_serious(rc);
1722 /* sync an object */
1723 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1725 rc = mdt_object_sync(info);
1727 struct md_object *next;
1728 const struct lu_fid *fid;
1729 struct lu_attr *la = &info->mti_attr.ma_attr;
1731 next = mdt_object_child(info->mti_object);
1732 info->mti_attr.ma_need = MA_INODE;
1733 info->mti_attr.ma_valid = 0;
1734 rc = mo_attr_get(info->mti_env, next,
1737 body = req_capsule_server_get(pill,
1739 fid = mdt_object_fid(info->mti_object);
1740 mdt_pack_attr2body(info, body, la, fid);
1744 rc = err_serious(rc);
1747 mdt_counter_incr(req->rq_export, LPROC_MDT_SYNC);
1752 #ifdef HAVE_QUOTA_SUPPORT
1753 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1755 struct obd_quotactl *oqctl;
1756 struct req_capsule *pill = info->mti_pill;
1757 struct obd_export *exp = info->mti_exp;
1758 struct md_quota *mq = md_quota(info->mti_env);
1759 struct md_device *next = info->mti_mdt->mdt_child;
1763 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1767 /* remote client has no permission for quotacheck */
1768 if (unlikely(exp_connect_rmtclient(exp)))
1771 rc = req_capsule_server_pack(pill);
1776 rc = next->md_ops->mdo_quota.mqo_check(info->mti_env, next,
1781 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1783 struct obd_quotactl *oqctl, *repoqc;
1784 struct req_capsule *pill = info->mti_pill;
1785 struct obd_export *exp = info->mti_exp;
1786 struct md_quota *mq = md_quota(info->mti_env);
1787 struct md_device *next = info->mti_mdt->mdt_child;
1788 const struct md_quota_operations *mqo = &next->md_ops->mdo_quota;
1792 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1797 if (exp_connect_rmtclient(exp)) {
1798 struct ptlrpc_request *req = mdt_info_req(info);
1799 struct mdt_export_data *med = mdt_req2med(req);
1800 struct lustre_idmap_table *idmap = med->med_idmap;
1802 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1803 oqctl->qc_cmd != Q_GETINFO))
1807 if (oqctl->qc_type == USRQUOTA)
1808 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1810 else if (oqctl->qc_type == GRPQUOTA)
1811 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1816 if (id == CFS_IDMAP_NOTFOUND) {
1817 CDEBUG(D_QUOTA, "no mapping for id %u\n",
1823 rc = req_capsule_server_pack(pill);
1827 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1828 LASSERT(repoqc != NULL);
1831 switch (oqctl->qc_cmd) {
1833 rc = mqo->mqo_on(info->mti_env, next, oqctl->qc_type);
1836 rc = mqo->mqo_off(info->mti_env, next, oqctl->qc_type);
1839 rc = mqo->mqo_setinfo(info->mti_env, next, oqctl->qc_type, id,
1843 rc = mqo->mqo_getinfo(info->mti_env, next, oqctl->qc_type, id,
1847 rc = mqo->mqo_setquota(info->mti_env, next, oqctl->qc_type, id,
1851 rc = mqo->mqo_getquota(info->mti_env, next, oqctl->qc_type, id,
1855 rc = mqo->mqo_getoinfo(info->mti_env, next, oqctl->qc_type, id,
1859 rc = mqo->mqo_getoquota(info->mti_env, next, oqctl->qc_type, id,
1862 case LUSTRE_Q_INVALIDATE:
1863 rc = mqo->mqo_invalidate(info->mti_env, next, oqctl->qc_type);
1865 case LUSTRE_Q_FINVALIDATE:
1866 rc = mqo->mqo_finvalidate(info->mti_env, next, oqctl->qc_type);
1869 CERROR("unsupported mdt_quotactl command: %d\n",
1881 * OBD PING and other handlers.
1883 static int mdt_obd_ping(struct mdt_thread_info *info)
1888 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1890 rc = target_handle_ping(mdt_info_req(info));
1892 rc = err_serious(rc);
1896 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1898 return err_serious(-EOPNOTSUPP);
1901 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1903 return err_serious(-EOPNOTSUPP);
1911 /** clone llog ctxt from child (mdd)
1912 * This allows remote llog (replicator) access.
1913 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1914 * context was originally set up, or we can handle them directly.
1915 * I choose the latter, but that means I need any llog
1916 * contexts set up by child to be accessable by the mdt. So we clone the
1917 * context into our context list here.
1919 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1922 struct md_device *next = mdt->mdt_child;
1923 struct llog_ctxt *ctxt;
1926 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1929 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1930 if (rc || ctxt == NULL) {
1931 CERROR("Can't get mdd ctxt %d\n", rc);
1935 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
1937 CERROR("Can't set mdt ctxt %d\n", rc);
1942 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
1943 struct mdt_device *mdt, int idx)
1945 struct llog_ctxt *ctxt;
1947 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
1950 /* Put once for the get we just did, and once for the clone */
1951 llog_ctxt_put(ctxt);
1952 llog_ctxt_put(ctxt);
1956 static int mdt_llog_create(struct mdt_thread_info *info)
1960 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
1961 rc = llog_origin_handle_create(mdt_info_req(info));
1962 return (rc < 0 ? err_serious(rc) : rc);
1965 static int mdt_llog_destroy(struct mdt_thread_info *info)
1969 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1970 rc = llog_origin_handle_destroy(mdt_info_req(info));
1971 return (rc < 0 ? err_serious(rc) : rc);
1974 static int mdt_llog_read_header(struct mdt_thread_info *info)
1978 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1979 rc = llog_origin_handle_read_header(mdt_info_req(info));
1980 return (rc < 0 ? err_serious(rc) : rc);
1983 static int mdt_llog_next_block(struct mdt_thread_info *info)
1987 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1988 rc = llog_origin_handle_next_block(mdt_info_req(info));
1989 return (rc < 0 ? err_serious(rc) : rc);
1992 static int mdt_llog_prev_block(struct mdt_thread_info *info)
1996 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1997 rc = llog_origin_handle_prev_block(mdt_info_req(info));
1998 return (rc < 0 ? err_serious(rc) : rc);
2005 static struct ldlm_callback_suite cbs = {
2006 .lcs_completion = ldlm_server_completion_ast,
2007 .lcs_blocking = ldlm_server_blocking_ast,
2011 static int mdt_enqueue(struct mdt_thread_info *info)
2013 struct ptlrpc_request *req;
2017 * info->mti_dlm_req already contains swapped and (if necessary)
2018 * converted dlm request.
2020 LASSERT(info->mti_dlm_req != NULL);
2022 req = mdt_info_req(info);
2023 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2024 req, info->mti_dlm_req, &cbs);
2025 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2026 return rc ? err_serious(rc) : req->rq_status;
2029 static int mdt_convert(struct mdt_thread_info *info)
2032 struct ptlrpc_request *req;
2034 LASSERT(info->mti_dlm_req);
2035 req = mdt_info_req(info);
2036 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2037 return rc ? err_serious(rc) : req->rq_status;
2040 static int mdt_bl_callback(struct mdt_thread_info *info)
2042 CERROR("bl callbacks should not happen on MDS\n");
2044 return err_serious(-EOPNOTSUPP);
2047 static int mdt_cp_callback(struct mdt_thread_info *info)
2049 CERROR("cp callbacks should not happen on MDS\n");
2051 return err_serious(-EOPNOTSUPP);
2055 * sec context handlers
2057 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2061 rc = mdt_handle_idmap(info);
2064 struct ptlrpc_request *req = mdt_info_req(info);
2067 opc = lustre_msg_get_opc(req->rq_reqmsg);
2068 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2069 sptlrpc_svc_ctx_invalidate(req);
2072 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2077 static struct mdt_object *mdt_obj(struct lu_object *o)
2079 LASSERT(lu_device_is_mdt(o->lo_dev));
2080 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2083 struct mdt_object *mdt_object_find(const struct lu_env *env,
2084 struct mdt_device *d,
2085 const struct lu_fid *f)
2087 struct lu_object *o;
2088 struct mdt_object *m;
2091 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2092 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2093 if (unlikely(IS_ERR(o)))
2094 m = (struct mdt_object *)o;
2101 * Asyncronous commit for mdt device.
2103 * Pass asynchonous commit call down the MDS stack.
2105 * \param env environment
2106 * \param mdt the mdt device
2108 static void mdt_device_commit_async(const struct lu_env *env,
2109 struct mdt_device *mdt)
2111 struct dt_device *dt = mdt->mdt_bottom;
2114 rc = dt->dd_ops->dt_commit_async(env, dt);
2115 if (unlikely(rc != 0))
2116 CWARN("async commit start failed with rc = %d", rc);
2120 * Mark the lock as "synchonous".
2122 * Mark the lock to deffer transaction commit to the unlock time.
2124 * \param lock the lock to mark as "synchonous"
2126 * \see mdt_is_lock_sync
2127 * \see mdt_save_lock
2129 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2131 lock->l_ast_data = (void*)1;
2135 * Check whehter the lock "synchonous" or not.
2137 * \param lock the lock to check
2138 * \retval 1 the lock is "synchonous"
2139 * \retval 0 the lock isn't "synchronous"
2141 * \see mdt_set_lock_sync
2142 * \see mdt_save_lock
2144 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2146 return lock->l_ast_data != NULL;
2150 * Blocking AST for mdt locks.
2152 * Starts transaction commit if in case of COS lock conflict or
2153 * deffers such a commit to the mdt_save_lock.
2155 * \param lock the lock which blocks a request or cancelling lock
2156 * \param desc unused
2157 * \param data unused
2158 * \param flag indicates whether this cancelling or blocking callback
2160 * \see ldlm_blocking_ast_nocheck
2162 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2163 void *data, int flag)
2165 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2166 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2170 if (flag == LDLM_CB_CANCELING)
2172 lock_res_and_lock(lock);
2173 if (lock->l_blocking_ast != mdt_blocking_ast) {
2174 unlock_res_and_lock(lock);
2177 if (mdt_cos_is_enabled(mdt) &&
2178 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2179 lock->l_blocking_lock != NULL &&
2180 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2181 mdt_set_lock_sync(lock);
2183 rc = ldlm_blocking_ast_nocheck(lock);
2185 /* There is no lock conflict if l_blocking_lock == NULL,
2186 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2187 * when the last reference to a local lock was released */
2188 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2191 rc = lu_env_init(&env, LCT_LOCAL);
2192 if (unlikely(rc != 0))
2193 CWARN("lu_env initialization failed with rc = %d,"
2194 "cannot start asynchronous commit\n", rc);
2196 mdt_device_commit_async(&env, mdt);
2202 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2203 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2205 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2206 ldlm_policy_data_t *policy = &info->mti_policy;
2207 struct ldlm_res_id *res_id = &info->mti_res_id;
2211 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2212 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2213 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2214 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2216 if (mdt_object_exists(o) < 0) {
2217 if (locality == MDT_CROSS_LOCK) {
2218 /* cross-ref object fix */
2219 ibits &= ~MDS_INODELOCK_UPDATE;
2220 ibits |= MDS_INODELOCK_LOOKUP;
2222 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2223 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2225 /* No PDO lock on remote object */
2226 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2229 if (lh->mlh_type == MDT_PDO_LOCK) {
2230 /* check for exists after object is locked */
2231 if (mdt_object_exists(o) == 0) {
2232 /* Non-existent object shouldn't have PDO lock */
2235 /* Non-dir object shouldn't have PDO lock */
2236 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2241 memset(policy, 0, sizeof(*policy));
2242 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2245 * Take PDO lock on whole directory and build correct @res_id for lock
2246 * on part of directory.
2248 if (lh->mlh_pdo_hash != 0) {
2249 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2250 mdt_lock_pdo_mode(info, o, lh);
2251 if (lh->mlh_pdo_mode != LCK_NL) {
2253 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2254 * is never going to be sent to client and we do not
2255 * want it slowed down due to possible cancels.
2257 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2258 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2259 policy, res_id, LDLM_FL_ATOMIC_CB,
2260 &info->mti_exp->exp_handle.h_cookie);
2266 * Finish res_id initializing by name hash marking part of
2267 * directory which is taking modification.
2269 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2272 policy->l_inodebits.bits = ibits;
2275 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2276 * going to be sent to client. If it is - mdt_intent_policy() path will
2277 * fix it up and turn FL_LOCAL flag off.
2279 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2280 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2281 &info->mti_exp->exp_handle.h_cookie);
2283 mdt_object_unlock(info, o, lh, 1);
2284 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2285 lh->mlh_pdo_hash != 0 &&
2286 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2287 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2294 * Save a lock within request object.
2296 * Keep the lock referenced until whether client ACK or transaction
2297 * commit happens or release the lock immediately depending on input
2298 * parameters. If COS is ON, a write lock is converted to COS lock
2301 * \param info thead info object
2302 * \param h lock handle
2303 * \param mode lock mode
2304 * \param decref force immediate lock releasing
2307 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2308 ldlm_mode_t mode, int decref)
2312 if (lustre_handle_is_used(h)) {
2313 if (decref || !info->mti_has_trans ||
2314 !(mode & (LCK_PW | LCK_EX))){
2315 mdt_fid_unlock(h, mode);
2317 struct mdt_device *mdt = info->mti_mdt;
2318 struct ldlm_lock *lock = ldlm_handle2lock(h);
2319 struct ptlrpc_request *req = mdt_info_req(info);
2322 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2324 CDEBUG(D_HA, "request = %p reply state = %p"
2325 " transno = "LPD64"\n",
2326 req, req->rq_reply_state, req->rq_transno);
2327 if (mdt_cos_is_enabled(mdt)) {
2329 ldlm_lock_downgrade(lock, LCK_COS);
2332 ptlrpc_save_lock(req, h, mode, no_ack);
2333 if (mdt_is_lock_sync(lock)) {
2334 CDEBUG(D_HA, "found sync-lock,"
2335 " async commit started\n");
2336 mdt_device_commit_async(info->mti_env,
2339 LDLM_LOCK_PUT(lock);
2348 * Unlock mdt object.
2350 * Immeditely release the regular lock and the PDO lock or save the
2351 * lock in reqeuest and keep them referenced until client ACK or
2352 * transaction commit.
2354 * \param info thread info object
2355 * \param o mdt object
2356 * \param lh mdt lock handle referencing regular and PDO locks
2357 * \param decref force immediate lock releasing
2359 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2360 struct mdt_lock_handle *lh, int decref)
2364 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2365 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2370 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2371 const struct lu_fid *f,
2372 struct mdt_lock_handle *lh,
2375 struct mdt_object *o;
2377 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2381 rc = mdt_object_lock(info, o, lh, ibits,
2384 mdt_object_put(info->mti_env, o);
2391 void mdt_object_unlock_put(struct mdt_thread_info * info,
2392 struct mdt_object * o,
2393 struct mdt_lock_handle *lh,
2396 mdt_object_unlock(info, o, lh, decref);
2397 mdt_object_put(info->mti_env, o);
2400 static struct mdt_handler *mdt_handler_find(__u32 opc,
2401 struct mdt_opc_slice *supported)
2403 struct mdt_opc_slice *s;
2404 struct mdt_handler *h;
2407 for (s = supported; s->mos_hs != NULL; s++) {
2408 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2409 h = s->mos_hs + (opc - s->mos_opc_start);
2410 if (likely(h->mh_opc != 0))
2411 LASSERTF(h->mh_opc == opc,
2412 "opcode mismatch %d != %d\n",
2415 h = NULL; /* unsupported opc */
2422 static int mdt_lock_resname_compat(struct mdt_device *m,
2423 struct ldlm_request *req)
2425 /* XXX something... later. */
2429 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2431 /* XXX something... later. */
2436 * Generic code handling requests that have struct mdt_body passed in:
2438 * - extract mdt_body from request and save it in @info, if present;
2440 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2443 * - if HABEO_CORPUS flag is set for this request type check whether object
2444 * actually exists on storage (lu_object_exists()).
2447 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2449 const struct mdt_body *body;
2450 struct mdt_object *obj;
2451 const struct lu_env *env;
2452 struct req_capsule *pill;
2456 env = info->mti_env;
2457 pill = info->mti_pill;
2459 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2463 if (!(body->valid & OBD_MD_FLID))
2466 if (!fid_is_sane(&body->fid1)) {
2467 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2472 * Do not get size or any capa fields before we check that request
2473 * contains capa actually. There are some requests which do not, for
2474 * instance MDS_IS_SUBDIR.
2476 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2477 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2478 mdt_set_capainfo(info, 0, &body->fid1,
2479 req_capsule_client_get(pill, &RMF_CAPA1));
2481 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2483 if ((flags & HABEO_CORPUS) &&
2484 !mdt_object_exists(obj)) {
2485 mdt_object_put(env, obj);
2486 /* for capability renew ENOENT will be handled in
2488 if (body->valid & OBD_MD_FLOSSCAPA)
2493 info->mti_object = obj;
2502 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2504 struct req_capsule *pill = info->mti_pill;
2508 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2509 rc = mdt_body_unpack(info, flags);
2513 if (rc == 0 && (flags & HABEO_REFERO)) {
2515 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2516 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2517 info->mti_body->eadatasize);
2518 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2519 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2520 info->mti_mdt->mdt_max_cookiesize);
2522 rc = req_capsule_server_pack(pill);
2527 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2529 struct md_device *next = m->mdt_child;
2531 return next->md_ops->mdo_init_capa_ctxt(env, next,
2532 m->mdt_opts.mo_mds_capa,
2533 m->mdt_capa_timeout,
2539 * Invoke handler for this request opc. Also do necessary preprocessing
2540 * (according to handler ->mh_flags), and post-processing (setting of
2541 * ->last_{xid,committed}).
2543 static int mdt_req_handle(struct mdt_thread_info *info,
2544 struct mdt_handler *h, struct ptlrpc_request *req)
2546 int rc, serious = 0;
2551 LASSERT(h->mh_act != NULL);
2552 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2553 LASSERT(current->journal_info == NULL);
2556 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2557 * to put same checks into handlers like mdt_close(), mdt_reint(),
2558 * etc., without talking to mdt authors first. Checking same thing
2559 * there again is useless and returning 0 error without packing reply
2560 * is buggy! Handlers either pack reply or return error.
2562 * We return 0 here and do not send any reply in order to emulate
2563 * network failure. Do not send any reply in case any of NET related
2564 * fail_id has occured.
2566 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2570 flags = h->mh_flags;
2571 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2573 if (h->mh_fmt != NULL) {
2574 req_capsule_set(info->mti_pill, h->mh_fmt);
2575 rc = mdt_unpack_req_pack_rep(info, flags);
2578 if (rc == 0 && flags & MUTABOR &&
2579 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2580 /* should it be rq_status? */
2583 if (rc == 0 && flags & HABEO_CLAVIS) {
2584 struct ldlm_request *dlm_req;
2586 LASSERT(h->mh_fmt != NULL);
2588 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2589 if (dlm_req != NULL) {
2590 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2592 dlm_req->lock_desc.l_policy_data.\
2593 l_inodebits.bits == 0)) {
2595 * Lock without inodebits makes no sense and
2596 * will oops later in ldlm. If client miss to
2597 * set such bits, do not trigger ASSERTION.
2599 * For liblustre flock case, it maybe zero.
2603 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2604 rc = mdt_lock_resname_compat(
2607 info->mti_dlm_req = dlm_req;
2614 /* capability setting changed via /proc, needs reinitialize ctxt */
2615 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2616 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2617 info->mti_mdt->mdt_capa_conf = 0;
2620 if (likely(rc == 0)) {
2622 * Process request, there can be two types of rc:
2623 * 1) errors with msg unpack/pack, other failures outside the
2624 * operation itself. This is counted as serious errors;
2625 * 2) errors during fs operation, should be placed in rq_status
2628 rc = h->mh_act(info);
2630 !req->rq_no_reply && req->rq_reply_state == NULL) {
2631 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2632 "pack reply and returned 0 error\n",
2636 serious = is_serious(rc);
2637 rc = clear_serious(rc);
2641 req->rq_status = rc;
2644 * ELDLM_* codes which > 0 should be in rq_status only as well as
2645 * all non-serious errors.
2647 if (rc > 0 || !serious)
2650 LASSERT(current->journal_info == NULL);
2652 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2653 info->mti_mdt->mdt_opts.mo_compat_resname) {
2654 struct ldlm_reply *dlmrep;
2656 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2658 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2661 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2662 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2663 target_committed_to_req(req);
2665 if (unlikely(req_is_replay(req) &&
2666 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2667 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2671 target_send_reply(req, rc, info->mti_fail_id);
2675 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2677 lh->mlh_type = MDT_NUL_LOCK;
2678 lh->mlh_reg_lh.cookie = 0ull;
2679 lh->mlh_reg_mode = LCK_MINMODE;
2680 lh->mlh_pdo_lh.cookie = 0ull;
2681 lh->mlh_pdo_mode = LCK_MINMODE;
2684 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2686 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2687 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2691 * Initialize fields of struct mdt_thread_info. Other fields are left in
2692 * uninitialized state, because it's too expensive to zero out whole
2693 * mdt_thread_info (> 1K) on each request arrival.
2695 static void mdt_thread_info_init(struct ptlrpc_request *req,
2696 struct mdt_thread_info *info)
2699 struct md_capainfo *ci;
2701 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2702 info->mti_pill = &req->rq_pill;
2705 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2706 mdt_lock_handle_init(&info->mti_lh[i]);
2708 /* mdt device: it can be NULL while CONNECT */
2709 if (req->rq_export) {
2710 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2711 info->mti_exp = req->rq_export;
2713 info->mti_mdt = NULL;
2714 info->mti_env = req->rq_svc_thread->t_env;
2715 ci = md_capainfo(info->mti_env);
2716 memset(ci, 0, sizeof *ci);
2717 if (req->rq_export) {
2718 if (exp_connect_rmtclient(req->rq_export))
2719 ci->mc_auth = LC_ID_CONVERT;
2720 else if (req->rq_export->exp_connect_flags &
2721 OBD_CONNECT_MDS_CAPA)
2722 ci->mc_auth = LC_ID_PLAIN;
2724 ci->mc_auth = LC_ID_NONE;
2727 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2728 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2729 info->mti_mos = NULL;
2731 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2732 info->mti_body = NULL;
2733 info->mti_object = NULL;
2734 info->mti_dlm_req = NULL;
2735 info->mti_has_trans = 0;
2736 info->mti_no_need_trans = 0;
2737 info->mti_cross_ref = 0;
2738 info->mti_opdata = 0;
2740 /* To not check for split by default. */
2741 info->mti_spec.sp_ck_split = 0;
2742 info->mti_spec.no_create = 0;
2745 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2749 req_capsule_fini(info->mti_pill);
2750 if (info->mti_object != NULL) {
2752 * freeing an object may lead to OSD level transaction, do not
2753 * let it mess with MDT. bz19385.
2755 info->mti_no_need_trans = 1;
2756 mdt_object_put(info->mti_env, info->mti_object);
2757 info->mti_object = NULL;
2759 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2760 mdt_lock_handle_fini(&info->mti_lh[i]);
2761 info->mti_env = NULL;
2764 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2765 struct obd_device *obd, int *process)
2767 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2768 case MDS_CONNECT: /* This will never get here, but for completeness. */
2769 case OST_CONNECT: /* This will never get here, but for completeness. */
2770 case MDS_DISCONNECT:
2771 case OST_DISCONNECT:
2776 case MDS_DONE_WRITING:
2777 case MDS_SYNC: /* used in unmounting */
2783 *process = target_queue_recovery_request(req, obd);
2787 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2794 * Handle recovery. Return:
2795 * +1: continue request processing;
2796 * -ve: abort immediately with the given error code;
2797 * 0: send reply with error code in req->rq_status;
2799 static int mdt_recovery(struct mdt_thread_info *info)
2801 struct ptlrpc_request *req = mdt_info_req(info);
2802 struct obd_device *obd;
2806 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2809 case SEC_CTX_INIT_CONT:
2815 rc = mdt_handle_idmap(info);
2824 if (unlikely(!class_connected_export(req->rq_export))) {
2825 CERROR("operation %d on unconnected MDS from %s\n",
2826 lustre_msg_get_opc(req->rq_reqmsg),
2827 libcfs_id2str(req->rq_peer));
2828 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2829 * mds_A will get -ENOTCONN(especially for ping req),
2830 * which will cause that mds_A deactive timeout, then when
2831 * mds_A cleanup, the cleanup process will be suspended since
2832 * deactive timeout is not zero.
2834 req->rq_status = -ENOTCONN;
2835 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2839 /* sanity check: if the xid matches, the request must be marked as a
2840 * resent or replayed */
2841 if (req_xid_is_last(req)) {
2842 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2843 (MSG_RESENT | MSG_REPLAY))) {
2844 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2845 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2846 lustre_msg_get_flags(req->rq_reqmsg));
2848 req->rq_status = -ENOTCONN;
2853 /* else: note the opposite is not always true; a RESENT req after a
2854 * failover will usually not match the last_xid, since it was likely
2855 * never committed. A REPLAYed request will almost never match the
2856 * last xid, however it could for a committed, but still retained,
2859 obd = req->rq_export->exp_obd;
2861 /* Check for aborted recovery... */
2862 if (unlikely(obd->obd_recovering)) {
2865 DEBUG_REQ(D_INFO, req, "Got new replay");
2866 rc = mdt_filter_recovery_request(req, obd, &should_process);
2867 if (rc != 0 || !should_process)
2869 else if (should_process < 0) {
2870 req->rq_status = should_process;
2871 rc = ptlrpc_error(req);
2878 static int mdt_msg_check_version(struct lustre_msg *msg)
2882 switch (lustre_msg_get_opc(msg)) {
2884 case MDS_DISCONNECT:
2887 case SEC_CTX_INIT_CONT:
2889 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2891 CERROR("bad opc %u version %08x, expecting %08x\n",
2892 lustre_msg_get_opc(msg),
2893 lustre_msg_get_version(msg),
2894 LUSTRE_OBD_VERSION);
2898 case MDS_GETATTR_NAME:
2905 case MDS_DONE_WRITING:
2912 case MDS_QUOTACHECK:
2918 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2920 CERROR("bad opc %u version %08x, expecting %08x\n",
2921 lustre_msg_get_opc(msg),
2922 lustre_msg_get_version(msg),
2923 LUSTRE_MDS_VERSION);
2927 case LDLM_BL_CALLBACK:
2928 case LDLM_CP_CALLBACK:
2929 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2931 CERROR("bad opc %u version %08x, expecting %08x\n",
2932 lustre_msg_get_opc(msg),
2933 lustre_msg_get_version(msg),
2934 LUSTRE_DLM_VERSION);
2936 case OBD_LOG_CANCEL:
2937 case LLOG_ORIGIN_HANDLE_CREATE:
2938 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2939 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2940 case LLOG_ORIGIN_HANDLE_CLOSE:
2941 case LLOG_ORIGIN_HANDLE_DESTROY:
2942 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2944 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2946 CERROR("bad opc %u version %08x, expecting %08x\n",
2947 lustre_msg_get_opc(msg),
2948 lustre_msg_get_version(msg),
2949 LUSTRE_LOG_VERSION);
2952 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2958 static int mdt_handle0(struct ptlrpc_request *req,
2959 struct mdt_thread_info *info,
2960 struct mdt_opc_slice *supported)
2962 struct mdt_handler *h;
2963 struct lustre_msg *msg;
2968 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2971 LASSERT(current->journal_info == NULL);
2973 msg = req->rq_reqmsg;
2974 rc = mdt_msg_check_version(msg);
2975 if (likely(rc == 0)) {
2976 rc = mdt_recovery(info);
2977 if (likely(rc == +1)) {
2978 h = mdt_handler_find(lustre_msg_get_opc(msg),
2980 if (likely(h != NULL)) {
2981 rc = mdt_req_handle(info, h, req);
2983 CERROR("The unsupported opc: 0x%x\n",
2984 lustre_msg_get_opc(msg) );
2985 req->rq_status = -ENOTSUPP;
2986 rc = ptlrpc_error(req);
2991 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2996 * MDT handler function called by ptlrpc service thread when request comes.
2998 * XXX common "target" functionality should be factored into separate module
2999 * shared by mdt, ost and stand-alone services like fld.
3001 static int mdt_handle_common(struct ptlrpc_request *req,
3002 struct mdt_opc_slice *supported)
3005 struct mdt_thread_info *info;
3009 env = req->rq_svc_thread->t_env;
3010 LASSERT(env != NULL);
3011 LASSERT(env->le_ses != NULL);
3012 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
3013 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3014 LASSERT(info != NULL);
3016 mdt_thread_info_init(req, info);
3018 rc = mdt_handle0(req, info, supported);
3020 mdt_thread_info_fini(info);
3025 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3028 int mdt_recovery_handle(struct ptlrpc_request *req)
3033 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3035 rc = mdt_handle_common(req, mdt_fld_handlers);
3038 rc = mdt_handle_common(req, mdt_seq_handlers);
3041 rc = mdt_handle_common(req, mdt_regular_handlers);
3048 static int mdt_regular_handle(struct ptlrpc_request *req)
3050 return mdt_handle_common(req, mdt_regular_handlers);
3053 static int mdt_readpage_handle(struct ptlrpc_request *req)
3055 return mdt_handle_common(req, mdt_readpage_handlers);
3058 static int mdt_xmds_handle(struct ptlrpc_request *req)
3060 return mdt_handle_common(req, mdt_xmds_handlers);
3063 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3065 return mdt_handle_common(req, mdt_seq_handlers);
3068 static int mdt_mdss_handle(struct ptlrpc_request *req)
3070 return mdt_handle_common(req, mdt_seq_handlers);
3073 static int mdt_dtss_handle(struct ptlrpc_request *req)
3075 return mdt_handle_common(req, mdt_seq_handlers);
3078 static int mdt_fld_handle(struct ptlrpc_request *req)
3080 return mdt_handle_common(req, mdt_fld_handlers);
3097 static int mdt_intent_getattr(enum mdt_it_code opcode,
3098 struct mdt_thread_info *info,
3099 struct ldlm_lock **,
3101 static int mdt_intent_reint(enum mdt_it_code opcode,
3102 struct mdt_thread_info *info,
3103 struct ldlm_lock **,
3106 static struct mdt_it_flavor {
3107 const struct req_format *it_fmt;
3109 int (*it_act)(enum mdt_it_code ,
3110 struct mdt_thread_info *,
3111 struct ldlm_lock **,
3114 } mdt_it_flavor[] = {
3116 .it_fmt = &RQF_LDLM_INTENT,
3117 /*.it_flags = HABEO_REFERO,*/
3119 .it_act = mdt_intent_reint,
3120 .it_reint = REINT_OPEN
3123 .it_fmt = &RQF_LDLM_INTENT,
3124 .it_flags = MUTABOR,
3125 .it_act = mdt_intent_reint,
3126 .it_reint = REINT_OPEN
3129 .it_fmt = &RQF_LDLM_INTENT,
3130 .it_flags = MUTABOR,
3131 .it_act = mdt_intent_reint,
3132 .it_reint = REINT_CREATE
3134 [MDT_IT_GETATTR] = {
3135 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3136 .it_flags = HABEO_REFERO,
3137 .it_act = mdt_intent_getattr
3139 [MDT_IT_READDIR] = {
3145 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3146 .it_flags = HABEO_REFERO,
3147 .it_act = mdt_intent_getattr
3150 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3151 .it_flags = MUTABOR,
3153 .it_reint = REINT_UNLINK
3157 .it_flags = MUTABOR,
3160 [MDT_IT_GETXATTR] = {
3166 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3167 .it_flags = HABEO_REFERO,
3168 .it_act = mdt_intent_getattr
3172 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3173 struct ldlm_lock **lockp,
3174 struct ldlm_lock *new_lock,
3175 struct mdt_lock_handle *lh,
3178 struct ptlrpc_request *req = mdt_info_req(info);
3179 struct ldlm_lock *lock = *lockp;
3182 * Get new lock only for cases when possible resent did not find any
3185 if (new_lock == NULL)
3186 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3188 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3189 lh->mlh_reg_lh.cookie = 0;
3193 LASSERTF(new_lock != NULL,
3194 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3197 * If we've already given this lock to a client once, then we should
3198 * have no readers or writers. Otherwise, we should have one reader
3199 * _or_ writer ref (which will be zeroed below) before returning the
3202 if (new_lock->l_export == req->rq_export) {
3203 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3205 LASSERT(new_lock->l_export == NULL);
3206 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3211 if (new_lock->l_export == req->rq_export) {
3213 * Already gave this to the client, which means that we
3214 * reconstructed a reply.
3216 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3218 lh->mlh_reg_lh.cookie = 0;
3219 RETURN(ELDLM_LOCK_REPLACED);
3223 * Fixup the lock to be given to the client.
3225 lock_res_and_lock(new_lock);
3226 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3227 * possible blocking AST. */
3228 while (new_lock->l_readers > 0) {
3229 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3230 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3231 new_lock->l_readers--;
3233 while (new_lock->l_writers > 0) {
3234 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3235 lu_ref_del(&new_lock->l_reference, "user", new_lo