1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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;
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 md_device *next = info->mti_mdt->mdt_child;
345 struct ptlrpc_service *svc;
346 struct obd_statfs *osfs;
351 svc = info->mti_pill->rc_req->rq_rqbd->rqbd_service;
353 /* This will trigger a watchdog timeout */
354 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
355 (MDT_SERVICE_WATCHDOG_FACTOR *
356 at_get(&svc->srv_at_estimate)) + 1);
358 rc = mdt_check_ucred(info);
360 RETURN(err_serious(rc));
362 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
363 rc = err_serious(-ENOMEM);
365 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
366 rc = next->md_ops->mdo_statfs(info->mti_env, next,
368 statfs_pack(osfs, &info->mti_u.ksfs);
374 * Pack SOM attributes into the reply.
375 * Call under a DLM UPDATE lock.
377 static void mdt_pack_size2body(struct mdt_thread_info *info,
378 struct mdt_object *mo)
381 struct md_attr *ma = &info->mti_attr;
383 LASSERT(ma->ma_attr.la_valid & LA_MODE);
384 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
386 /* Check if Size-on-MDS is supported, if this is a regular file,
387 * if SOM is enabled on the object and if SOM cache exists and valid.
388 * Otherwise do not pack Size-on-MDS attributes to the reply. */
389 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
390 !S_ISREG(ma->ma_attr.la_mode) ||
391 !mdt_object_is_som_enabled(mo) ||
392 !(ma->ma_valid & MA_SOM))
395 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
396 b->size = ma->ma_som->msd_size;
397 b->blocks = ma->ma_som->msd_blocks;
400 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
401 const struct lu_attr *attr, const struct lu_fid *fid)
403 struct md_attr *ma = &info->mti_attr;
405 LASSERT(ma->ma_valid & MA_INODE);
407 b->atime = attr->la_atime;
408 b->mtime = attr->la_mtime;
409 b->ctime = attr->la_ctime;
410 b->mode = attr->la_mode;
411 b->size = attr->la_size;
412 b->blocks = attr->la_blocks;
413 b->uid = attr->la_uid;
414 b->gid = attr->la_gid;
415 b->flags = attr->la_flags;
416 b->nlink = attr->la_nlink;
417 b->rdev = attr->la_rdev;
419 /*XXX should pack the reply body according to lu_valid*/
420 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
421 OBD_MD_FLGID | OBD_MD_FLTYPE |
422 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
423 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
425 if (!S_ISREG(attr->la_mode)) {
426 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
427 } else if (ma->ma_need & MA_LOV && ma->ma_lmm_size == 0) {
428 /* means no objects are allocated on osts. */
429 LASSERT(!(ma->ma_valid & MA_LOV));
430 /* just ignore blocks occupied by extend attributes on MDS */
432 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
433 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
438 b->valid |= OBD_MD_FLID;
440 /* FIXME: these should be fixed when new igif ready.*/
441 b->ino = fid_oid(fid); /* 1.6 compatibility */
442 b->generation = fid_ver(fid); /* 1.6 compatibility */
443 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
445 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
446 PFID(fid), b->nlink, b->mode, b->size);
450 mdt_body_reverse_idmap(info, b);
453 static inline int mdt_body_has_lov(const struct lu_attr *la,
454 const struct mdt_body *body)
456 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
457 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
460 static int mdt_getattr_internal(struct mdt_thread_info *info,
461 struct mdt_object *o, int ma_need)
463 struct md_object *next = mdt_object_child(o);
464 const struct mdt_body *reqbody = info->mti_body;
465 struct ptlrpc_request *req = mdt_info_req(info);
466 struct md_attr *ma = &info->mti_attr;
467 struct lu_attr *la = &ma->ma_attr;
468 struct req_capsule *pill = info->mti_pill;
469 const struct lu_env *env = info->mti_env;
470 struct mdt_body *repbody;
471 struct lu_buf *buffer = &info->mti_buf;
475 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
476 RETURN(err_serious(-ENOMEM));
478 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
482 rc = mdt_object_exists(o);
484 /* This object is located on remote node.*/
485 repbody->fid1 = *mdt_object_fid(o);
486 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
490 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
491 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
493 /* If it is dir object and client require MEA, then we got MEA */
494 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
495 reqbody->valid & OBD_MD_MEA) {
496 /* Assumption: MDT_MD size is enough for lmv size. */
497 ma->ma_lmv = buffer->lb_buf;
498 ma->ma_lmv_size = buffer->lb_len;
499 ma->ma_need = MA_LMV | MA_INODE;
501 ma->ma_lmm = buffer->lb_buf;
502 ma->ma_lmm_size = buffer->lb_len;
503 ma->ma_need = MA_LOV | MA_INODE;
506 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
507 reqbody->valid & OBD_MD_FLDIREA &&
508 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
509 /* get default stripe info for this dir. */
510 ma->ma_need |= MA_LOV_DEF;
512 ma->ma_need |= ma_need;
513 if (ma->ma_need & MA_SOM)
514 ma->ma_som = &info->mti_u.som.data;
516 rc = mo_attr_get(env, next, ma);
518 CERROR("getattr error for "DFID": %d\n",
519 PFID(mdt_object_fid(o)), rc);
523 if (likely(ma->ma_valid & MA_INODE))
524 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
528 if (mdt_body_has_lov(la, reqbody)) {
529 if (ma->ma_valid & MA_LOV) {
530 LASSERT(ma->ma_lmm_size);
531 mdt_dump_lmm(D_INFO, ma->ma_lmm);
532 repbody->eadatasize = ma->ma_lmm_size;
533 if (S_ISDIR(la->la_mode))
534 repbody->valid |= OBD_MD_FLDIREA;
536 repbody->valid |= OBD_MD_FLEASIZE;
538 if (ma->ma_valid & MA_LMV) {
539 LASSERT(S_ISDIR(la->la_mode));
540 repbody->eadatasize = ma->ma_lmv_size;
541 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
543 } else if (S_ISLNK(la->la_mode) &&
544 reqbody->valid & OBD_MD_LINKNAME) {
545 buffer->lb_buf = ma->ma_lmm;
546 buffer->lb_len = reqbody->eadatasize;
547 rc = mo_readlink(env, next, buffer);
548 if (unlikely(rc <= 0)) {
549 CERROR("readlink failed: %d\n", rc);
552 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
554 repbody->valid |= OBD_MD_LINKNAME;
555 repbody->eadatasize = rc;
557 ((char*)ma->ma_lmm)[rc - 1] = 0;
558 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
559 (char*)ma->ma_lmm, rc);
564 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
565 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
566 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
567 repbody->valid |= OBD_MD_FLMODEASIZE;
568 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
569 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
570 repbody->max_cookiesize);
573 if (exp_connect_rmtclient(info->mti_exp) &&
574 reqbody->valid & OBD_MD_FLRMTPERM) {
575 void *buf = req_capsule_server_get(pill, &RMF_ACL);
577 /* mdt_getattr_lock only */
578 rc = mdt_pack_remote_perm(info, o, buf);
580 repbody->valid &= ~OBD_MD_FLRMTPERM;
581 repbody->aclsize = 0;
584 repbody->valid |= OBD_MD_FLRMTPERM;
585 repbody->aclsize = sizeof(struct mdt_remote_perm);
588 #ifdef CONFIG_FS_POSIX_ACL
589 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
590 (reqbody->valid & OBD_MD_FLACL)) {
591 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
592 buffer->lb_len = req_capsule_get_size(pill,
593 &RMF_ACL, RCL_SERVER);
594 if (buffer->lb_len > 0) {
595 rc = mo_xattr_get(env, next, buffer,
596 XATTR_NAME_ACL_ACCESS);
598 if (rc == -ENODATA) {
599 repbody->aclsize = 0;
600 repbody->valid |= OBD_MD_FLACL;
602 } else if (rc == -EOPNOTSUPP) {
605 CERROR("got acl size: %d\n", rc);
608 repbody->aclsize = rc;
609 repbody->valid |= OBD_MD_FLACL;
616 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
617 info->mti_mdt->mdt_opts.mo_mds_capa &&
618 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
619 struct lustre_capa *capa;
621 capa = req_capsule_server_get(pill, &RMF_CAPA1);
623 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
624 rc = mo_capa_get(env, next, capa, 0);
627 repbody->valid |= OBD_MD_FLMDSCAPA;
632 static int mdt_renew_capa(struct mdt_thread_info *info)
634 struct mdt_object *obj = info->mti_object;
635 struct mdt_body *body;
636 struct lustre_capa *capa, *c;
640 /* if object doesn't exist, or server has disabled capability,
641 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
644 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
645 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA))
648 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
649 LASSERT(body != NULL);
651 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
654 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
658 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
660 body->valid |= OBD_MD_FLOSSCAPA;
664 static int mdt_getattr(struct mdt_thread_info *info)
666 struct mdt_object *obj = info->mti_object;
667 struct req_capsule *pill = info->mti_pill;
668 struct mdt_body *reqbody;
669 struct mdt_body *repbody;
675 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
678 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
679 rc = req_capsule_server_pack(pill);
681 RETURN(err_serious(rc));
682 rc = mdt_renew_capa(info);
683 GOTO(out_shrink, rc);
686 LASSERT(obj != NULL);
687 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
689 mode = lu_object_attr(&obj->mot_obj.mo_lu);
690 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
691 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
692 md_size = reqbody->eadatasize;
694 md_size = info->mti_mdt->mdt_max_mdsize;
696 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
698 rc = req_capsule_server_pack(pill);
699 if (unlikely(rc != 0))
700 RETURN(err_serious(rc));
702 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
703 LASSERT(repbody != NULL);
704 repbody->eadatasize = 0;
705 repbody->aclsize = 0;
707 if (reqbody->valid & OBD_MD_FLRMTPERM)
708 rc = mdt_init_ucred(info, reqbody);
710 rc = mdt_check_ucred(info);
712 GOTO(out_shrink, rc);
714 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
715 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
718 * Don't check capability at all, because rename might getattr for
719 * remote obj, and at that time no capability is available.
721 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
722 rc = mdt_getattr_internal(info, obj, 0);
723 if (reqbody->valid & OBD_MD_FLRMTPERM)
724 mdt_exit_ucred(info);
727 mdt_shrink_reply(info);
731 static int mdt_is_subdir(struct mdt_thread_info *info)
733 struct mdt_object *o = info->mti_object;
734 struct req_capsule *pill = info->mti_pill;
735 const struct mdt_body *body = info->mti_body;
736 struct mdt_body *repbody;
742 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
745 * We save last checked parent fid to @repbody->fid1 for remote
748 LASSERT(fid_is_sane(&body->fid2));
749 LASSERT(mdt_object_exists(o) > 0);
750 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
751 &body->fid2, &repbody->fid1);
752 if (rc == 0 || rc == -EREMOTE)
753 repbody->valid |= OBD_MD_FLID;
758 static int mdt_raw_lookup(struct mdt_thread_info *info,
759 struct mdt_object *parent,
760 const struct lu_name *lname,
761 struct ldlm_reply *ldlm_rep)
763 struct md_object *next = mdt_object_child(info->mti_object);
764 const struct mdt_body *reqbody = info->mti_body;
765 struct lu_fid *child_fid = &info->mti_tmp_fid1;
766 struct mdt_body *repbody;
770 if (reqbody->valid != OBD_MD_FLID)
773 LASSERT(!info->mti_cross_ref);
775 /* Only got the fid of this obj by name */
776 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
779 /* XXX is raw_lookup possible as intent operation? */
782 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
785 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
787 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
790 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
791 repbody->fid1 = *child_fid;
792 repbody->valid = OBD_MD_FLID;
798 * UPDATE lock should be taken against parent, and be release before exit;
799 * child_bits lock should be taken against child, and be returned back:
800 * (1)normal request should release the child lock;
801 * (2)intent request will grant the lock to client.
803 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
804 struct mdt_lock_handle *lhc,
806 struct ldlm_reply *ldlm_rep)
808 struct ptlrpc_request *req = mdt_info_req(info);
809 struct mdt_body *reqbody = NULL;
810 struct mdt_object *parent = info->mti_object;
811 struct mdt_object *child;
812 struct md_object *next = mdt_object_child(parent);
813 struct lu_fid *child_fid = &info->mti_tmp_fid1;
814 struct lu_name *lname = NULL;
815 const char *name = NULL;
817 struct mdt_lock_handle *lhp;
818 struct ldlm_lock *lock;
819 struct ldlm_res_id *res_id;
826 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
827 LASSERT(ergo(is_resent,
828 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
830 LASSERT(parent != NULL);
831 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
833 RETURN(err_serious(-EFAULT));
835 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
837 if (!info->mti_cross_ref) {
839 * XXX: Check for "namelen == 0" is for getattr by fid
840 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
841 * that is the name must contain at least one character and
842 * the terminating '\0'
845 reqbody = req_capsule_client_get(info->mti_pill,
847 LASSERT(fid_is_sane(&reqbody->fid2));
850 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
852 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
855 lname = mdt_name(info->mti_env, (char *)name, namelen);
856 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
857 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
861 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
863 rc = mdt_object_exists(parent);
864 if (unlikely(rc == 0)) {
865 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
866 &parent->mot_obj.mo_lu,
867 "Parent doesn't exist!\n");
869 } else if (!info->mti_cross_ref) {
870 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
871 PFID(mdt_object_fid(parent)));
874 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
882 if (info->mti_cross_ref) {
883 /* Only getattr on the child. Parent is on another node. */
884 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
886 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
887 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
890 /* Do not take lock for resent case. */
891 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
892 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
893 lhc->mlh_reg_lh.cookie);
894 LASSERT(fid_res_name_eq(mdt_object_fid(child),
895 &lock->l_resource->lr_name));
899 mdt_lock_handle_init(lhc);
900 mdt_lock_reg_init(lhc, LCK_PR);
903 * Object's name is on another MDS, no lookup lock is
904 * needed here but update is.
906 child_bits &= ~MDS_INODELOCK_LOOKUP;
907 child_bits |= MDS_INODELOCK_UPDATE;
909 rc = mdt_object_lock(info, child, lhc, child_bits,
913 /* Finally, we can get attr for child. */
914 mdt_set_capainfo(info, 0, mdt_object_fid(child),
916 rc = mdt_getattr_internal(info, child, 0);
917 if (unlikely(rc != 0))
918 mdt_object_unlock(info, child, lhc, 1);
923 /* step 1: lock parent */
924 lhp = &info->mti_lh[MDT_LH_PARENT];
925 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
926 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
929 if (unlikely(rc != 0))
933 /* step 2: lookup child's fid by name */
934 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
939 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
940 GOTO(out_parent, rc);
942 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
944 *child_fid = reqbody->fid2;
945 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
949 *step 3: find the child object by fid & lock it.
950 * regardless if it is local or remote.
952 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
954 if (unlikely(IS_ERR(child)))
955 GOTO(out_parent, rc = PTR_ERR(child));
957 /* Do not take lock for resent case. */
958 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
959 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
960 lhc->mlh_reg_lh.cookie);
962 res_id = &lock->l_resource->lr_name;
963 if (!fid_res_name_eq(mdt_object_fid(child),
964 &lock->l_resource->lr_name)) {
965 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
966 &lock->l_resource->lr_name),
967 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
968 (unsigned long)res_id->name[0],
969 (unsigned long)res_id->name[1],
970 (unsigned long)res_id->name[2],
971 PFID(mdt_object_fid(parent)));
972 CWARN("Although resent, but still not get child lock"
973 "parent:"DFID" child:"DFID"\n",
974 PFID(mdt_object_fid(parent)),
975 PFID(mdt_object_fid(child)));
976 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
985 ma = &info->mti_attr;
987 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
988 mdt_lock_handle_init(lhc);
989 mdt_lock_reg_init(lhc, LCK_PR);
991 if (mdt_object_exists(child) == 0) {
992 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
993 &child->mot_obj.mo_lu,
994 "Object doesn't exist!\n");
995 GOTO(out_child, rc = -ESTALE);
999 ma->ma_need = MA_INODE;
1000 rc = mo_attr_get(info->mti_env, next, ma);
1001 if (unlikely(rc != 0))
1002 GOTO(out_child, rc);
1004 /* If the file has not been changed for some time, we return
1005 * not only a LOOKUP lock, but also an UPDATE lock and this
1006 * might save us RPC on later STAT. For directories, it also
1007 * let negative dentry starts working for this dir. */
1008 if (ma->ma_valid & MA_INODE &&
1009 ma->ma_attr.la_valid & LA_CTIME &&
1010 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1011 ma->ma_attr.la_ctime < cfs_time_current_sec())
1012 child_bits |= MDS_INODELOCK_UPDATE;
1014 rc = mdt_object_lock(info, child, lhc, child_bits,
1017 if (unlikely(rc != 0))
1018 GOTO(out_child, rc);
1021 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1022 /* Get MA_SOM attributes if update lock is given. */
1024 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1025 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1028 /* finally, we can get attr for child. */
1029 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1030 rc = mdt_getattr_internal(info, child, ma_need);
1031 if (unlikely(rc != 0)) {
1032 mdt_object_unlock(info, child, lhc, 1);
1034 /* Debugging code. */
1035 res_id = &lock->l_resource->lr_name;
1036 LDLM_DEBUG(lock, "Returning lock to client");
1037 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1038 &lock->l_resource->lr_name),
1039 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1040 (unsigned long)res_id->name[0],
1041 (unsigned long)res_id->name[1],
1042 (unsigned long)res_id->name[2],
1043 PFID(mdt_object_fid(child)));
1044 mdt_pack_size2body(info, child);
1047 LDLM_LOCK_PUT(lock);
1051 mdt_object_put(info->mti_env, child);
1053 mdt_object_unlock(info, parent, lhp, 1);
1057 /* normal handler: should release the child lock */
1058 static int mdt_getattr_name(struct mdt_thread_info *info)
1060 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1061 struct mdt_body *reqbody;
1062 struct mdt_body *repbody;
1066 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1067 LASSERT(reqbody != NULL);
1068 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1069 LASSERT(repbody != NULL);
1071 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1072 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1073 repbody->eadatasize = 0;
1074 repbody->aclsize = 0;
1076 rc = mdt_init_ucred(info, reqbody);
1078 GOTO(out_shrink, rc);
1080 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1081 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1082 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1083 lhc->mlh_reg_lh.cookie = 0;
1085 mdt_exit_ucred(info);
1088 mdt_shrink_reply(info);
1092 static const struct lu_device_operations mdt_lu_ops;
1094 static int lu_device_is_mdt(struct lu_device *d)
1096 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1099 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1100 void *karg, void *uarg);
1102 static int mdt_set_info(struct mdt_thread_info *info)
1104 struct ptlrpc_request *req = mdt_info_req(info);
1107 int keylen, vallen, rc = 0;
1110 rc = req_capsule_server_pack(info->mti_pill);
1114 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1116 DEBUG_REQ(D_HA, req, "no set_info key");
1120 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1123 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1125 DEBUG_REQ(D_HA, req, "no set_info val");
1129 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1132 /* Swab any part of val you need to here */
1133 if (KEY_IS(KEY_READ_ONLY)) {
1135 lustre_msg_set_status(req->rq_repmsg, 0);
1137 cfs_spin_lock(&req->rq_export->exp_lock);
1139 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1141 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1142 cfs_spin_unlock(&req->rq_export->exp_lock);
1144 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1145 struct changelog_setinfo *cs =
1146 (struct changelog_setinfo *)val;
1147 if (vallen != sizeof(*cs)) {
1148 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1151 if (ptlrpc_req_need_swab(req)) {
1152 __swab64s(&cs->cs_recno);
1153 __swab32s(&cs->cs_id);
1156 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1158 lustre_msg_set_status(req->rq_repmsg, rc);
1166 static int mdt_connect(struct mdt_thread_info *info)
1169 struct ptlrpc_request *req;
1171 req = mdt_info_req(info);
1172 rc = target_handle_connect(req);
1174 LASSERT(req->rq_export != NULL);
1175 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1176 rc = mdt_init_sec_level(info);
1178 rc = mdt_init_idmap(info);
1180 obd_disconnect(class_export_get(req->rq_export));
1182 rc = err_serious(rc);
1187 static int mdt_disconnect(struct mdt_thread_info *info)
1192 rc = target_handle_disconnect(mdt_info_req(info));
1194 rc = err_serious(rc);
1198 static int mdt_sendpage(struct mdt_thread_info *info,
1199 struct lu_rdpg *rdpg)
1201 struct ptlrpc_request *req = mdt_info_req(info);
1202 struct obd_export *exp = req->rq_export;
1203 struct ptlrpc_bulk_desc *desc;
1204 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1212 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1217 for (i = 0, tmpcount = rdpg->rp_count;
1218 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1219 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1220 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1223 LASSERT(desc->bd_nob == rdpg->rp_count);
1224 rc = sptlrpc_svc_wrap_bulk(req, desc);
1226 GOTO(free_desc, rc);
1228 rc = ptlrpc_start_bulk_transfer(desc);
1230 GOTO(free_desc, rc);
1232 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1233 GOTO(abort_bulk, rc = 0);
1235 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1237 CERROR("Req deadline already passed %lu (now: %lu)\n",
1238 req->rq_deadline, cfs_time_current_sec());
1239 *lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(max(timeout, 1)),
1240 cfs_time_seconds(1), NULL, NULL);
1241 rc = l_wait_event(desc->bd_waitq, !ptlrpc_server_bulk_active(desc) ||
1242 exp->exp_failed || exp->exp_abort_active_req, lwi);
1243 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1246 if (desc->bd_success &&
1247 desc->bd_nob_transferred == rdpg->rp_count)
1248 GOTO(free_desc, rc);
1251 if (exp->exp_abort_active_req || exp->exp_failed)
1252 GOTO(abort_bulk, rc);
1255 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1256 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1257 desc->bd_nob_transferred, rdpg->rp_count,
1258 exp->exp_client_uuid.uuid,
1259 exp->exp_connection->c_remote_uuid.uuid);
1261 class_fail_export(exp);
1265 ptlrpc_abort_bulk(desc);
1267 ptlrpc_free_bulk(desc);
1271 #ifdef HAVE_SPLIT_SUPPORT
1273 * Retrieve dir entry from the page and insert it to the slave object, actually,
1274 * this should be in osd layer, but since it will not in the final product, so
1275 * just do it here and do not define more moo api anymore for this.
1277 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1280 struct mdt_object *object = info->mti_object;
1281 struct lu_fid *lf = &info->mti_tmp_fid2;
1282 struct md_attr *ma = &info->mti_attr;
1283 struct lu_dirpage *dp;
1284 struct lu_dirent *ent;
1285 int rc = 0, offset = 0;
1288 /* Make sure we have at least one entry. */
1293 * Disable trans for this name insert, since it will include many trans
1296 info->mti_no_need_trans = 1;
1298 * When write_dir_page, no need update parent's ctime,
1299 * and no permission check for name_insert.
1301 ma->ma_attr.la_ctime = 0;
1302 ma->ma_attr.la_valid = LA_MODE;
1303 ma->ma_valid = MA_INODE;
1306 dp = page_address(page);
1307 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1309 for (ent = lu_dirent_start(dp); ent != NULL;
1310 ent = lu_dirent_next(ent)) {
1311 struct lu_name *lname;
1314 if (le16_to_cpu(ent->lde_namelen) == 0)
1317 fid_le_to_cpu(lf, &ent->lde_fid);
1318 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1319 ma->ma_attr.la_mode = S_IFDIR;
1321 ma->ma_attr.la_mode = 0;
1322 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1324 GOTO(out, rc = -ENOMEM);
1326 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1327 lname = mdt_name(info->mti_env, name,
1328 le16_to_cpu(ent->lde_namelen));
1329 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1330 rc = mdo_name_insert(info->mti_env,
1331 md_object_next(&object->mot_obj),
1333 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1335 CERROR("Can't insert %*.*s, rc %d\n",
1336 le16_to_cpu(ent->lde_namelen),
1337 le16_to_cpu(ent->lde_namelen),
1342 offset += lu_dirent_size(ent);
1352 static int mdt_bulk_timeout(void *data)
1356 CERROR("mdt bulk transfer timeout \n");
1361 static int mdt_writepage(struct mdt_thread_info *info)
1363 struct ptlrpc_request *req = mdt_info_req(info);
1364 struct mdt_body *reqbody;
1365 struct l_wait_info *lwi;
1366 struct ptlrpc_bulk_desc *desc;
1372 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1373 if (reqbody == NULL)
1374 RETURN(err_serious(-EFAULT));
1376 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1378 RETURN(err_serious(-ENOMEM));
1380 /* allocate the page for the desc */
1381 page = cfs_alloc_page(CFS_ALLOC_STD);
1383 GOTO(desc_cleanup, rc = -ENOMEM);
1385 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1386 (int)reqbody->size, (int)reqbody->nlink);
1388 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1389 (int)reqbody->nlink);
1391 rc = sptlrpc_svc_prep_bulk(req, desc);
1393 GOTO(cleanup_page, rc);
1395 * Check if client was evicted while we were doing i/o before touching
1400 GOTO(cleanup_page, rc = -ENOMEM);
1402 if (desc->bd_export->exp_failed)
1405 rc = ptlrpc_start_bulk_transfer (desc);
1407 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1408 mdt_bulk_timeout, desc);
1409 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1410 desc->bd_export->exp_failed, lwi);
1411 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1412 if (rc == -ETIMEDOUT) {
1413 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1414 ptlrpc_abort_bulk(desc);
1415 } else if (desc->bd_export->exp_failed) {
1416 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1418 ptlrpc_abort_bulk(desc);
1419 } else if (!desc->bd_success ||
1420 desc->bd_nob_transferred != desc->bd_nob) {
1421 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1423 "truncated" : "network error on",
1424 desc->bd_nob_transferred, desc->bd_nob);
1425 /* XXX should this be a different errno? */
1429 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1432 GOTO(cleanup_lwi, rc);
1433 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1438 cfs_free_page(page);
1440 ptlrpc_free_bulk(desc);
1445 static int mdt_readpage(struct mdt_thread_info *info)
1447 struct mdt_object *object = info->mti_object;
1448 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1449 struct mdt_body *reqbody;
1450 struct mdt_body *repbody;
1455 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1456 RETURN(err_serious(-ENOMEM));
1458 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1459 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1460 if (reqbody == NULL || repbody == NULL)
1461 RETURN(err_serious(-EFAULT));
1464 * prepare @rdpg before calling lower layers and transfer itself. Here
1465 * reqbody->size contains offset of where to start to read and
1466 * reqbody->nlink contains number bytes to read.
1468 rdpg->rp_hash = reqbody->size;
1469 if (rdpg->rp_hash != reqbody->size) {
1470 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1471 rdpg->rp_hash, reqbody->size);
1475 rdpg->rp_attrs = reqbody->mode;
1476 rdpg->rp_count = reqbody->nlink;
1477 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1478 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1479 if (rdpg->rp_pages == NULL)
1482 for (i = 0; i < rdpg->rp_npages; ++i) {
1483 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1484 if (rdpg->rp_pages[i] == NULL)
1485 GOTO(free_rdpg, rc = -ENOMEM);
1488 /* call lower layers to fill allocated pages with directory data */
1489 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1491 GOTO(free_rdpg, rc);
1493 /* send pages to client */
1494 rc = mdt_sendpage(info, rdpg);
1499 for (i = 0; i < rdpg->rp_npages; i++)
1500 if (rdpg->rp_pages[i] != NULL)
1501 cfs_free_page(rdpg->rp_pages[i]);
1502 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1504 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1510 static int mdt_reint_internal(struct mdt_thread_info *info,
1511 struct mdt_lock_handle *lhc,
1514 struct req_capsule *pill = info->mti_pill;
1515 struct mdt_device *mdt = info->mti_mdt;
1516 struct md_quota *mq = md_quota(info->mti_env);
1517 struct mdt_body *repbody;
1522 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1523 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1524 mdt->mdt_max_mdsize);
1525 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1526 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1527 mdt->mdt_max_cookiesize);
1529 rc = req_capsule_server_pack(pill);
1531 CERROR("Can't pack response, rc %d\n", rc);
1532 RETURN(err_serious(rc));
1535 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1536 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1538 repbody->eadatasize = 0;
1539 repbody->aclsize = 0;
1542 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1543 GOTO(out_shrink, rc = err_serious(-EFAULT));
1545 rc = mdt_reint_unpack(info, op);
1547 CERROR("Can't unpack reint, rc %d\n", rc);
1548 GOTO(out_shrink, rc = err_serious(rc));
1551 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1553 /* for replay no cookkie / lmm need, because client have this already */
1554 if (info->mti_spec.no_create == 1) {
1555 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1556 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1558 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1559 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1563 rc = mdt_init_ucred_reint(info);
1565 GOTO(out_shrink, rc);
1567 rc = mdt_fix_attr_ucred(info, op);
1569 GOTO(out_ucred, rc = err_serious(rc));
1571 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1572 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1573 GOTO(out_ucred, rc);
1575 mq->mq_exp = info->mti_exp;
1576 rc = mdt_reint_rec(info, lhc);
1579 mdt_exit_ucred(info);
1581 mdt_shrink_reply(info);
1585 static long mdt_reint_opcode(struct mdt_thread_info *info,
1586 const struct req_format **fmt)
1588 struct mdt_rec_reint *rec;
1591 opc = err_serious(-EFAULT);
1592 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1594 opc = rec->rr_opcode;
1595 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1596 if (opc < REINT_MAX && fmt[opc] != NULL)
1597 req_capsule_extend(info->mti_pill, fmt[opc]);
1599 CERROR("Unsupported opc: %ld\n", opc);
1600 opc = err_serious(opc);
1606 static int mdt_reint(struct mdt_thread_info *info)
1611 static const struct req_format *reint_fmts[REINT_MAX] = {
1612 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1613 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1614 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1615 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1616 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1617 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1618 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1623 opc = mdt_reint_opcode(info, reint_fmts);
1626 * No lock possible here from client to pass it to reint code
1629 rc = mdt_reint_internal(info, NULL, opc);
1634 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1638 /* this should sync the whole device */
1639 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1641 struct dt_device *dt = mdt->mdt_bottom;
1645 rc = dt->dd_ops->dt_sync(env, dt);
1649 /* this should sync this object */
1650 static int mdt_object_sync(struct mdt_thread_info *info)
1652 struct md_object *next;
1656 if (!mdt_object_exists(info->mti_object)) {
1657 CWARN("Non existing object "DFID"!\n",
1658 PFID(mdt_object_fid(info->mti_object)));
1661 next = mdt_object_child(info->mti_object);
1662 rc = mo_object_sync(info->mti_env, next);
1667 static int mdt_sync(struct mdt_thread_info *info)
1669 struct req_capsule *pill = info->mti_pill;
1670 struct mdt_body *body;
1674 /* The fid may be zero, so we req_capsule_set manually */
1675 req_capsule_set(pill, &RQF_MDS_SYNC);
1677 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1679 RETURN(err_serious(-EINVAL));
1681 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1682 RETURN(err_serious(-ENOMEM));
1684 if (fid_seq(&body->fid1) == 0) {
1685 /* sync the whole device */
1686 rc = req_capsule_server_pack(pill);
1688 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1690 rc = err_serious(rc);
1692 /* sync an object */
1693 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1695 rc = mdt_object_sync(info);
1697 struct md_object *next;
1698 const struct lu_fid *fid;
1699 struct lu_attr *la = &info->mti_attr.ma_attr;
1701 next = mdt_object_child(info->mti_object);
1702 info->mti_attr.ma_need = MA_INODE;
1703 info->mti_attr.ma_valid = 0;
1704 rc = mo_attr_get(info->mti_env, next,
1707 body = req_capsule_server_get(pill,
1709 fid = mdt_object_fid(info->mti_object);
1710 mdt_pack_attr2body(info, body, la, fid);
1714 rc = err_serious(rc);
1719 #ifdef HAVE_QUOTA_SUPPORT
1720 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1722 struct obd_quotactl *oqctl;
1723 struct req_capsule *pill = info->mti_pill;
1724 struct obd_export *exp = info->mti_exp;
1725 struct md_quota *mq = md_quota(info->mti_env);
1726 struct md_device *next = info->mti_mdt->mdt_child;
1730 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1734 /* remote client has no permission for quotacheck */
1735 if (unlikely(exp_connect_rmtclient(exp)))
1738 rc = req_capsule_server_pack(pill);
1743 rc = next->md_ops->mdo_quota.mqo_check(info->mti_env, next,
1748 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1750 struct obd_quotactl *oqctl, *repoqc;
1751 struct req_capsule *pill = info->mti_pill;
1752 struct obd_export *exp = info->mti_exp;
1753 struct md_quota *mq = md_quota(info->mti_env);
1754 struct md_device *next = info->mti_mdt->mdt_child;
1755 const struct md_quota_operations *mqo = &next->md_ops->mdo_quota;
1759 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1764 if (exp_connect_rmtclient(exp)) {
1765 struct ptlrpc_request *req = mdt_info_req(info);
1766 struct mdt_export_data *med = mdt_req2med(req);
1767 struct lustre_idmap_table *idmap = med->med_idmap;
1769 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1770 oqctl->qc_cmd != Q_GETINFO))
1774 if (oqctl->qc_type == USRQUOTA)
1775 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1777 else if (oqctl->qc_type == GRPQUOTA)
1778 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1783 if (id == CFS_IDMAP_NOTFOUND) {
1784 CDEBUG(D_QUOTA, "no mapping for id %u\n",
1790 rc = req_capsule_server_pack(pill);
1794 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1795 LASSERT(repoqc != NULL);
1798 switch (oqctl->qc_cmd) {
1800 rc = mqo->mqo_on(info->mti_env, next, oqctl->qc_type);
1803 rc = mqo->mqo_off(info->mti_env, next, oqctl->qc_type);
1806 rc = mqo->mqo_setinfo(info->mti_env, next, oqctl->qc_type, id,
1810 rc = mqo->mqo_getinfo(info->mti_env, next, oqctl->qc_type, id,
1814 rc = mqo->mqo_setquota(info->mti_env, next, oqctl->qc_type, id,
1818 rc = mqo->mqo_getquota(info->mti_env, next, oqctl->qc_type, id,
1822 rc = mqo->mqo_getoinfo(info->mti_env, next, oqctl->qc_type, id,
1826 rc = mqo->mqo_getoquota(info->mti_env, next, oqctl->qc_type, id,
1829 case LUSTRE_Q_INVALIDATE:
1830 rc = mqo->mqo_invalidate(info->mti_env, next, oqctl->qc_type);
1832 case LUSTRE_Q_FINVALIDATE:
1833 rc = mqo->mqo_finvalidate(info->mti_env, next, oqctl->qc_type);
1836 CERROR("unsupported mdt_quotactl command: %d\n",
1848 * OBD PING and other handlers.
1850 static int mdt_obd_ping(struct mdt_thread_info *info)
1855 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1857 rc = target_handle_ping(mdt_info_req(info));
1859 rc = err_serious(rc);
1863 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1865 return err_serious(-EOPNOTSUPP);
1868 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1870 return err_serious(-EOPNOTSUPP);
1878 /** clone llog ctxt from child (mdd)
1879 * This allows remote llog (replicator) access.
1880 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1881 * context was originally set up, or we can handle them directly.
1882 * I choose the latter, but that means I need any llog
1883 * contexts set up by child to be accessable by the mdt. So we clone the
1884 * context into our context list here.
1886 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1889 struct md_device *next = mdt->mdt_child;
1890 struct llog_ctxt *ctxt;
1893 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1896 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1897 if (rc || ctxt == NULL) {
1898 CERROR("Can't get mdd ctxt %d\n", rc);
1902 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
1904 CERROR("Can't set mdt ctxt %d\n", rc);
1909 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
1910 struct mdt_device *mdt, int idx)
1912 struct llog_ctxt *ctxt;
1914 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
1917 /* Put once for the get we just did, and once for the clone */
1918 llog_ctxt_put(ctxt);
1919 llog_ctxt_put(ctxt);
1923 static int mdt_llog_create(struct mdt_thread_info *info)
1927 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
1928 rc = llog_origin_handle_create(mdt_info_req(info));
1929 return (rc < 0 ? err_serious(rc) : rc);
1932 static int mdt_llog_destroy(struct mdt_thread_info *info)
1936 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1937 rc = llog_origin_handle_destroy(mdt_info_req(info));
1938 return (rc < 0 ? err_serious(rc) : rc);
1941 static int mdt_llog_read_header(struct mdt_thread_info *info)
1945 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1946 rc = llog_origin_handle_read_header(mdt_info_req(info));
1947 return (rc < 0 ? err_serious(rc) : rc);
1950 static int mdt_llog_next_block(struct mdt_thread_info *info)
1954 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1955 rc = llog_origin_handle_next_block(mdt_info_req(info));
1956 return (rc < 0 ? err_serious(rc) : rc);
1959 static int mdt_llog_prev_block(struct mdt_thread_info *info)
1963 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1964 rc = llog_origin_handle_prev_block(mdt_info_req(info));
1965 return (rc < 0 ? err_serious(rc) : rc);
1972 static struct ldlm_callback_suite cbs = {
1973 .lcs_completion = ldlm_server_completion_ast,
1974 .lcs_blocking = ldlm_server_blocking_ast,
1978 static int mdt_enqueue(struct mdt_thread_info *info)
1980 struct ptlrpc_request *req;
1984 * info->mti_dlm_req already contains swapped and (if necessary)
1985 * converted dlm request.
1987 LASSERT(info->mti_dlm_req != NULL);
1989 req = mdt_info_req(info);
1990 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
1991 req, info->mti_dlm_req, &cbs);
1992 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
1993 return rc ? err_serious(rc) : req->rq_status;
1996 static int mdt_convert(struct mdt_thread_info *info)
1999 struct ptlrpc_request *req;
2001 LASSERT(info->mti_dlm_req);
2002 req = mdt_info_req(info);
2003 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2004 return rc ? err_serious(rc) : req->rq_status;
2007 static int mdt_bl_callback(struct mdt_thread_info *info)
2009 CERROR("bl callbacks should not happen on MDS\n");
2011 return err_serious(-EOPNOTSUPP);
2014 static int mdt_cp_callback(struct mdt_thread_info *info)
2016 CERROR("cp callbacks should not happen on MDS\n");
2018 return err_serious(-EOPNOTSUPP);
2022 * sec context handlers
2024 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2028 rc = mdt_handle_idmap(info);
2031 struct ptlrpc_request *req = mdt_info_req(info);
2034 opc = lustre_msg_get_opc(req->rq_reqmsg);
2035 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2036 sptlrpc_svc_ctx_invalidate(req);
2039 OBD_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, obd_fail_val);
2044 static struct mdt_object *mdt_obj(struct lu_object *o)
2046 LASSERT(lu_device_is_mdt(o->lo_dev));
2047 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2050 struct mdt_object *mdt_object_find(const struct lu_env *env,
2051 struct mdt_device *d,
2052 const struct lu_fid *f)
2054 struct lu_object *o;
2055 struct mdt_object *m;
2058 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2059 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2060 if (unlikely(IS_ERR(o)))
2061 m = (struct mdt_object *)o;
2068 * Asyncronous commit for mdt device.
2070 * Pass asynchonous commit call down the MDS stack.
2072 * \param env environment
2073 * \param mdt the mdt device
2075 static void mdt_device_commit_async(const struct lu_env *env,
2076 struct mdt_device *mdt)
2078 struct dt_device *dt = mdt->mdt_bottom;
2081 rc = dt->dd_ops->dt_commit_async(env, dt);
2082 if (unlikely(rc != 0))
2083 CWARN("async commit start failed with rc = %d", rc);
2087 * Mark the lock as "synchonous".
2089 * Mark the lock to deffer transaction commit to the unlock time.
2091 * \param lock the lock to mark as "synchonous"
2093 * \see mdt_is_lock_sync
2094 * \see mdt_save_lock
2096 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2098 lock->l_ast_data = (void*)1;
2102 * Check whehter the lock "synchonous" or not.
2104 * \param lock the lock to check
2105 * \retval 1 the lock is "synchonous"
2106 * \retval 0 the lock isn't "synchronous"
2108 * \see mdt_set_lock_sync
2109 * \see mdt_save_lock
2111 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2113 return lock->l_ast_data != NULL;
2117 * Blocking AST for mdt locks.
2119 * Starts transaction commit if in case of COS lock conflict or
2120 * deffers such a commit to the mdt_save_lock.
2122 * \param lock the lock which blocks a request or cancelling lock
2123 * \param desc unused
2124 * \param data unused
2125 * \param flag indicates whether this cancelling or blocking callback
2127 * \see ldlm_blocking_ast_nocheck
2129 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2130 void *data, int flag)
2132 struct obd_device *obd = lock->l_resource->lr_namespace->ns_obd;
2133 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2137 if (flag == LDLM_CB_CANCELING)
2139 lock_res_and_lock(lock);
2140 if (lock->l_blocking_ast != mdt_blocking_ast) {
2141 unlock_res_and_lock(lock);
2144 if (mdt_cos_is_enabled(mdt) &&
2145 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2146 lock->l_blocking_lock != NULL &&
2147 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2148 mdt_set_lock_sync(lock);
2150 rc = ldlm_blocking_ast_nocheck(lock);
2152 /* There is no lock conflict if l_blocking_lock == NULL,
2153 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2154 * when the last reference to a local lock was released */
2155 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2158 rc = lu_env_init(&env, LCT_MD_THREAD);
2159 if (unlikely(rc != 0))
2160 CWARN("lu_env initialization failed with rc = %d,"
2161 "cannot start asynchronous commit\n", rc);
2163 mdt_device_commit_async(&env, mdt);
2169 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2170 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2172 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2173 ldlm_policy_data_t *policy = &info->mti_policy;
2174 struct ldlm_res_id *res_id = &info->mti_res_id;
2178 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2179 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2180 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2181 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2183 if (mdt_object_exists(o) < 0) {
2184 if (locality == MDT_CROSS_LOCK) {
2185 /* cross-ref object fix */
2186 ibits &= ~MDS_INODELOCK_UPDATE;
2187 ibits |= MDS_INODELOCK_LOOKUP;
2189 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2190 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2192 /* No PDO lock on remote object */
2193 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2196 if (lh->mlh_type == MDT_PDO_LOCK) {
2197 /* check for exists after object is locked */
2198 if (mdt_object_exists(o) == 0) {
2199 /* Non-existent object shouldn't have PDO lock */
2202 /* Non-dir object shouldn't have PDO lock */
2203 LASSERT(S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)));
2207 memset(policy, 0, sizeof(*policy));
2208 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2211 * Take PDO lock on whole directory and build correct @res_id for lock
2212 * on part of directory.
2214 if (lh->mlh_pdo_hash != 0) {
2215 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2216 mdt_lock_pdo_mode(info, o, lh);
2217 if (lh->mlh_pdo_mode != LCK_NL) {
2219 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2220 * is never going to be sent to client and we do not
2221 * want it slowed down due to possible cancels.
2223 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2224 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2225 policy, res_id, LDLM_FL_ATOMIC_CB,
2226 &info->mti_exp->exp_handle.h_cookie);
2232 * Finish res_id initializing by name hash marking part of
2233 * directory which is taking modification.
2235 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2238 policy->l_inodebits.bits = ibits;
2241 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2242 * going to be sent to client. If it is - mdt_intent_policy() path will
2243 * fix it up and turn FL_LOCAL flag off.
2245 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2246 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2247 &info->mti_exp->exp_handle.h_cookie);
2249 mdt_object_unlock(info, o, lh, 1);
2250 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2251 lh->mlh_pdo_hash != 0 &&
2252 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2253 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 10);
2260 * Save a lock within request object.
2262 * Keep the lock referenced until whether client ACK or transaction
2263 * commit happens or release the lock immediately depending on input
2264 * parameters. If COS is ON, a write lock is converted to COS lock
2267 * \param info thead info object
2268 * \param h lock handle
2269 * \param mode lock mode
2270 * \param decref force immediate lock releasing
2273 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2274 ldlm_mode_t mode, int decref)
2278 if (lustre_handle_is_used(h)) {
2279 if (decref || !info->mti_has_trans ||
2280 !(mode & (LCK_PW | LCK_EX))){
2281 mdt_fid_unlock(h, mode);
2283 struct mdt_device *mdt = info->mti_mdt;
2284 struct ldlm_lock *lock = ldlm_handle2lock(h);
2285 struct ptlrpc_request *req = mdt_info_req(info);
2288 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2290 CDEBUG(D_HA, "request = %p reply state = %p"
2291 " transno = "LPD64"\n",
2292 req, req->rq_reply_state, req->rq_transno);
2293 if (mdt_cos_is_enabled(mdt)) {
2295 ldlm_lock_downgrade(lock, LCK_COS);
2298 ptlrpc_save_lock(req, h, mode, no_ack);
2299 if (mdt_is_lock_sync(lock)) {
2300 CDEBUG(D_HA, "found sync-lock,"
2301 " async commit started\n");
2302 mdt_device_commit_async(info->mti_env,
2305 LDLM_LOCK_PUT(lock);
2314 * Unlock mdt object.
2316 * Immeditely release the regular lock and the PDO lock or save the
2317 * lock in reqeuest and keep them referenced until client ACK or
2318 * transaction commit.
2320 * \param info thread info object
2321 * \param o mdt object
2322 * \param lh mdt lock handle referencing regular and PDO locks
2323 * \param decref force immediate lock releasing
2325 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2326 struct mdt_lock_handle *lh, int decref)
2330 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2331 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2336 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2337 const struct lu_fid *f,
2338 struct mdt_lock_handle *lh,
2341 struct mdt_object *o;
2343 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2347 rc = mdt_object_lock(info, o, lh, ibits,
2350 mdt_object_put(info->mti_env, o);
2357 void mdt_object_unlock_put(struct mdt_thread_info * info,
2358 struct mdt_object * o,
2359 struct mdt_lock_handle *lh,
2362 mdt_object_unlock(info, o, lh, decref);
2363 mdt_object_put(info->mti_env, o);
2366 static struct mdt_handler *mdt_handler_find(__u32 opc,
2367 struct mdt_opc_slice *supported)
2369 struct mdt_opc_slice *s;
2370 struct mdt_handler *h;
2373 for (s = supported; s->mos_hs != NULL; s++) {
2374 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2375 h = s->mos_hs + (opc - s->mos_opc_start);
2376 if (likely(h->mh_opc != 0))
2377 LASSERTF(h->mh_opc == opc,
2378 "opcode mismatch %d != %d\n",
2381 h = NULL; /* unsupported opc */
2388 static int mdt_lock_resname_compat(struct mdt_device *m,
2389 struct ldlm_request *req)
2391 /* XXX something... later. */
2395 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2397 /* XXX something... later. */
2402 * Generic code handling requests that have struct mdt_body passed in:
2404 * - extract mdt_body from request and save it in @info, if present;
2406 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2409 * - if HABEO_CORPUS flag is set for this request type check whether object
2410 * actually exists on storage (lu_object_exists()).
2413 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2415 const struct mdt_body *body;
2416 struct mdt_object *obj;
2417 const struct lu_env *env;
2418 struct req_capsule *pill;
2422 env = info->mti_env;
2423 pill = info->mti_pill;
2425 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2429 if (!(body->valid & OBD_MD_FLID))
2432 if (!fid_is_sane(&body->fid1)) {
2433 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2438 * Do not get size or any capa fields before we check that request
2439 * contains capa actually. There are some requests which do not, for
2440 * instance MDS_IS_SUBDIR.
2442 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2443 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2444 mdt_set_capainfo(info, 0, &body->fid1,
2445 req_capsule_client_get(pill, &RMF_CAPA1));
2447 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2449 if ((flags & HABEO_CORPUS) &&
2450 !mdt_object_exists(obj)) {
2451 mdt_object_put(env, obj);
2452 /* for capability renew ENOENT will be handled in
2454 if (body->valid & OBD_MD_FLOSSCAPA)
2459 info->mti_object = obj;
2468 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2470 struct req_capsule *pill = info->mti_pill;
2474 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2475 rc = mdt_body_unpack(info, flags);
2479 if (rc == 0 && (flags & HABEO_REFERO)) {
2480 struct mdt_device *mdt = info->mti_mdt;
2484 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2485 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2486 mdt->mdt_max_mdsize);
2487 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2488 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2489 mdt->mdt_max_cookiesize);
2491 rc = req_capsule_server_pack(pill);
2496 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2498 struct md_device *next = m->mdt_child;
2500 return next->md_ops->mdo_init_capa_ctxt(env, next,
2501 m->mdt_opts.mo_mds_capa,
2502 m->mdt_capa_timeout,
2508 * Invoke handler for this request opc. Also do necessary preprocessing
2509 * (according to handler ->mh_flags), and post-processing (setting of
2510 * ->last_{xid,committed}).
2512 static int mdt_req_handle(struct mdt_thread_info *info,
2513 struct mdt_handler *h, struct ptlrpc_request *req)
2515 int rc, serious = 0;
2520 LASSERT(h->mh_act != NULL);
2521 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2522 LASSERT(current->journal_info == NULL);
2525 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2526 * to put same checks into handlers like mdt_close(), mdt_reint(),
2527 * etc., without talking to mdt authors first. Checking same thing
2528 * there again is useless and returning 0 error without packing reply
2529 * is buggy! Handlers either pack reply or return error.
2531 * We return 0 here and do not send any reply in order to emulate
2532 * network failure. Do not send any reply in case any of NET related
2533 * fail_id has occured.
2535 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2539 flags = h->mh_flags;
2540 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2542 if (h->mh_fmt != NULL) {
2543 req_capsule_set(info->mti_pill, h->mh_fmt);
2544 rc = mdt_unpack_req_pack_rep(info, flags);
2547 if (rc == 0 && flags & MUTABOR &&
2548 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2549 /* should it be rq_status? */
2552 if (rc == 0 && flags & HABEO_CLAVIS) {
2553 struct ldlm_request *dlm_req;
2555 LASSERT(h->mh_fmt != NULL);
2557 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2558 if (dlm_req != NULL) {
2559 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2561 dlm_req->lock_desc.l_policy_data.\
2562 l_inodebits.bits == 0)) {
2564 * Lock without inodebits makes no sense and
2565 * will oops later in ldlm. If client miss to
2566 * set such bits, do not trigger ASSERTION.
2568 * For liblustre flock case, it maybe zero.
2572 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2573 rc = mdt_lock_resname_compat(
2576 info->mti_dlm_req = dlm_req;
2583 /* capability setting changed via /proc, needs reinitialize ctxt */
2584 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2585 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2586 info->mti_mdt->mdt_capa_conf = 0;
2589 if (likely(rc == 0)) {
2591 * Process request, there can be two types of rc:
2592 * 1) errors with msg unpack/pack, other failures outside the
2593 * operation itself. This is counted as serious errors;
2594 * 2) errors during fs operation, should be placed in rq_status
2597 rc = h->mh_act(info);
2599 !req->rq_no_reply && req->rq_reply_state == NULL) {
2600 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2601 "pack reply and returned 0 error\n",
2605 serious = is_serious(rc);
2606 rc = clear_serious(rc);
2610 req->rq_status = rc;
2613 * ELDLM_* codes which > 0 should be in rq_status only as well as
2614 * all non-serious errors.
2616 if (rc > 0 || !serious)
2619 LASSERT(current->journal_info == NULL);
2621 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2622 info->mti_mdt->mdt_opts.mo_compat_resname) {
2623 struct ldlm_reply *dlmrep;
2625 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2627 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2630 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2631 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2632 target_committed_to_req(req);
2634 if (unlikely(req_is_replay(req) &&
2635 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2636 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2640 target_send_reply(req, rc, info->mti_fail_id);
2644 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2646 lh->mlh_type = MDT_NUL_LOCK;
2647 lh->mlh_reg_lh.cookie = 0ull;
2648 lh->mlh_reg_mode = LCK_MINMODE;
2649 lh->mlh_pdo_lh.cookie = 0ull;
2650 lh->mlh_pdo_mode = LCK_MINMODE;
2653 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2655 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2656 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2660 * Initialize fields of struct mdt_thread_info. Other fields are left in
2661 * uninitialized state, because it's too expensive to zero out whole
2662 * mdt_thread_info (> 1K) on each request arrival.
2664 static void mdt_thread_info_init(struct ptlrpc_request *req,
2665 struct mdt_thread_info *info)
2668 struct md_capainfo *ci;
2670 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2671 info->mti_pill = &req->rq_pill;
2674 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2675 mdt_lock_handle_init(&info->mti_lh[i]);
2677 /* mdt device: it can be NULL while CONNECT */
2678 if (req->rq_export) {
2679 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2680 info->mti_exp = req->rq_export;
2682 info->mti_mdt = NULL;
2683 info->mti_env = req->rq_svc_thread->t_env;
2684 ci = md_capainfo(info->mti_env);
2685 memset(ci, 0, sizeof *ci);
2686 if (req->rq_export) {
2687 if (exp_connect_rmtclient(req->rq_export))
2688 ci->mc_auth = LC_ID_CONVERT;
2689 else if (req->rq_export->exp_connect_flags &
2690 OBD_CONNECT_MDS_CAPA)
2691 ci->mc_auth = LC_ID_PLAIN;
2693 ci->mc_auth = LC_ID_NONE;
2696 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2697 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2698 info->mti_mos = NULL;
2700 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2701 info->mti_body = NULL;
2702 info->mti_object = NULL;
2703 info->mti_dlm_req = NULL;
2704 info->mti_has_trans = 0;
2705 info->mti_no_need_trans = 0;
2706 info->mti_cross_ref = 0;
2707 info->mti_opdata = 0;
2709 /* To not check for split by default. */
2710 info->mti_spec.sp_ck_split = 0;
2711 info->mti_spec.no_create = 0;
2714 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2718 req_capsule_fini(info->mti_pill);
2719 if (info->mti_object != NULL) {
2721 * freeing an object may lead to OSD level transaction, do not
2722 * let it mess with MDT. bz19385.
2724 info->mti_no_need_trans = 1;
2725 mdt_object_put(info->mti_env, info->mti_object);
2726 info->mti_object = NULL;
2728 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2729 mdt_lock_handle_fini(&info->mti_lh[i]);
2730 info->mti_env = NULL;
2733 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2734 struct obd_device *obd, int *process)
2736 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2737 case MDS_CONNECT: /* This will never get here, but for completeness. */
2738 case OST_CONNECT: /* This will never get here, but for completeness. */
2739 case MDS_DISCONNECT:
2740 case OST_DISCONNECT:
2745 case MDS_DONE_WRITING:
2746 case MDS_SYNC: /* used in unmounting */
2752 *process = target_queue_recovery_request(req, obd);
2756 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2763 * Handle recovery. Return:
2764 * +1: continue request processing;
2765 * -ve: abort immediately with the given error code;
2766 * 0: send reply with error code in req->rq_status;
2768 static int mdt_recovery(struct mdt_thread_info *info)
2770 struct ptlrpc_request *req = mdt_info_req(info);
2771 struct obd_device *obd;
2775 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2778 case SEC_CTX_INIT_CONT:
2784 rc = mdt_handle_idmap(info);
2793 if (unlikely(!class_connected_export(req->rq_export))) {
2794 CERROR("operation %d on unconnected MDS from %s\n",
2795 lustre_msg_get_opc(req->rq_reqmsg),
2796 libcfs_id2str(req->rq_peer));
2797 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2798 * mds_A will get -ENOTCONN(especially for ping req),
2799 * which will cause that mds_A deactive timeout, then when
2800 * mds_A cleanup, the cleanup process will be suspended since
2801 * deactive timeout is not zero.
2803 req->rq_status = -ENOTCONN;
2804 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2808 /* sanity check: if the xid matches, the request must be marked as a
2809 * resent or replayed */
2810 if (req_xid_is_last(req)) {
2811 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2812 (MSG_RESENT | MSG_REPLAY))) {
2813 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2814 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2815 lustre_msg_get_flags(req->rq_reqmsg));
2817 req->rq_status = -ENOTCONN;
2822 /* else: note the opposite is not always true; a RESENT req after a
2823 * failover will usually not match the last_xid, since it was likely
2824 * never committed. A REPLAYed request will almost never match the
2825 * last xid, however it could for a committed, but still retained,
2828 obd = req->rq_export->exp_obd;
2830 /* Check for aborted recovery... */
2831 if (unlikely(obd->obd_recovering)) {
2834 DEBUG_REQ(D_INFO, req, "Got new replay");
2835 rc = mdt_filter_recovery_request(req, obd, &should_process);
2836 if (rc != 0 || !should_process)
2838 else if (should_process < 0) {
2839 req->rq_status = should_process;
2840 rc = ptlrpc_error(req);
2847 static int mdt_msg_check_version(struct lustre_msg *msg)
2851 switch (lustre_msg_get_opc(msg)) {
2853 case MDS_DISCONNECT:
2856 case SEC_CTX_INIT_CONT:
2858 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2860 CERROR("bad opc %u version %08x, expecting %08x\n",
2861 lustre_msg_get_opc(msg),
2862 lustre_msg_get_version(msg),
2863 LUSTRE_OBD_VERSION);
2867 case MDS_GETATTR_NAME:
2874 case MDS_DONE_WRITING:
2881 case MDS_QUOTACHECK:
2887 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2889 CERROR("bad opc %u version %08x, expecting %08x\n",
2890 lustre_msg_get_opc(msg),
2891 lustre_msg_get_version(msg),
2892 LUSTRE_MDS_VERSION);
2896 case LDLM_BL_CALLBACK:
2897 case LDLM_CP_CALLBACK:
2898 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2900 CERROR("bad opc %u version %08x, expecting %08x\n",
2901 lustre_msg_get_opc(msg),
2902 lustre_msg_get_version(msg),
2903 LUSTRE_DLM_VERSION);
2905 case OBD_LOG_CANCEL:
2906 case LLOG_ORIGIN_HANDLE_CREATE:
2907 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2908 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2909 case LLOG_ORIGIN_HANDLE_CLOSE:
2910 case LLOG_ORIGIN_HANDLE_DESTROY:
2911 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2913 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2915 CERROR("bad opc %u version %08x, expecting %08x\n",
2916 lustre_msg_get_opc(msg),
2917 lustre_msg_get_version(msg),
2918 LUSTRE_LOG_VERSION);
2921 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2927 static int mdt_handle0(struct ptlrpc_request *req,
2928 struct mdt_thread_info *info,
2929 struct mdt_opc_slice *supported)
2931 struct mdt_handler *h;
2932 struct lustre_msg *msg;
2937 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2940 LASSERT(current->journal_info == NULL);
2942 msg = req->rq_reqmsg;
2943 rc = mdt_msg_check_version(msg);
2944 if (likely(rc == 0)) {
2945 rc = mdt_recovery(info);
2946 if (likely(rc == +1)) {
2947 h = mdt_handler_find(lustre_msg_get_opc(msg),
2949 if (likely(h != NULL)) {
2950 rc = mdt_req_handle(info, h, req);
2952 CERROR("The unsupported opc: 0x%x\n",
2953 lustre_msg_get_opc(msg) );
2954 req->rq_status = -ENOTSUPP;
2955 rc = ptlrpc_error(req);
2960 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2965 * MDT handler function called by ptlrpc service thread when request comes.
2967 * XXX common "target" functionality should be factored into separate module
2968 * shared by mdt, ost and stand-alone services like fld.
2970 static int mdt_handle_common(struct ptlrpc_request *req,
2971 struct mdt_opc_slice *supported)
2974 struct mdt_thread_info *info;
2978 env = req->rq_svc_thread->t_env;
2979 LASSERT(env != NULL);
2980 LASSERT(env->le_ses != NULL);
2981 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2982 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2983 LASSERT(info != NULL);
2985 mdt_thread_info_init(req, info);
2987 rc = mdt_handle0(req, info, supported);
2989 mdt_thread_info_fini(info);
2994 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
2997 int mdt_recovery_handle(struct ptlrpc_request *req)
3002 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3004 rc = mdt_handle_common(req, mdt_fld_handlers);
3007 rc = mdt_handle_common(req, mdt_seq_handlers);
3010 rc = mdt_handle_common(req, mdt_regular_handlers);
3017 static int mdt_regular_handle(struct ptlrpc_request *req)
3019 return mdt_handle_common(req, mdt_regular_handlers);
3022 static int mdt_readpage_handle(struct ptlrpc_request *req)
3024 return mdt_handle_common(req, mdt_readpage_handlers);
3027 static int mdt_xmds_handle(struct ptlrpc_request *req)
3029 return mdt_handle_common(req, mdt_xmds_handlers);
3032 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3034 return mdt_handle_common(req, mdt_seq_handlers);
3037 static int mdt_mdss_handle(struct ptlrpc_request *req)
3039 return mdt_handle_common(req, mdt_seq_handlers);
3042 static int mdt_dtss_handle(struct ptlrpc_request *req)
3044 return mdt_handle_common(req, mdt_seq_handlers);
3047 static int mdt_fld_handle(struct ptlrpc_request *req)
3049 return mdt_handle_common(req, mdt_fld_handlers);
3065 static int mdt_intent_getattr(enum mdt_it_code opcode,
3066 struct mdt_thread_info *info,
3067 struct ldlm_lock **,
3069 static int mdt_intent_reint(enum mdt_it_code opcode,
3070 struct mdt_thread_info *info,
3071 struct ldlm_lock **,
3074 static struct mdt_it_flavor {
3075 const struct req_format *it_fmt;
3077 int (*it_act)(enum mdt_it_code ,
3078 struct mdt_thread_info *,
3079 struct ldlm_lock **,
3082 } mdt_it_flavor[] = {
3084 .it_fmt = &RQF_LDLM_INTENT,
3085 /*.it_flags = HABEO_REFERO,*/
3087 .it_act = mdt_intent_reint,
3088 .it_reint = REINT_OPEN
3091 .it_fmt = &RQF_LDLM_INTENT,
3092 .it_flags = MUTABOR,
3093 .it_act = mdt_intent_reint,
3094 .it_reint = REINT_OPEN
3097 .it_fmt = &RQF_LDLM_INTENT,
3098 .it_flags = MUTABOR,
3099 .it_act = mdt_intent_reint,
3100 .it_reint = REINT_CREATE
3102 [MDT_IT_GETATTR] = {
3103 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3104 .it_flags = HABEO_REFERO,
3105 .it_act = mdt_intent_getattr
3107 [MDT_IT_READDIR] = {
3113 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3114 .it_flags = HABEO_REFERO,
3115 .it_act = mdt_intent_getattr
3118 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3119 .it_flags = MUTABOR,
3121 .it_reint = REINT_UNLINK
3125 .it_flags = MUTABOR,
3128 [MDT_IT_GETXATTR] = {
3135 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3136 struct ldlm_lock **lockp,
3137 struct ldlm_lock *new_lock,
3138 struct mdt_lock_handle *lh,
3141 struct ptlrpc_request *req = mdt_info_req(info);
3142 struct ldlm_lock *lock = *lockp;
3145 * Get new lock only for cases when possible resent did not find any
3148 if (new_lock == NULL)
3149 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3151 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3152 lh->mlh_reg_lh.cookie = 0;
3156 LASSERTF(new_lock != NULL,
3157 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3160 * If we've already given this lock to a client once, then we should
3161 * have no readers or writers. Otherwise, we should have one reader
3162 * _or_ writer ref (which will be zeroed below) before returning the
3165 if (new_lock->l_export == req->rq_export) {
3166 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3168 LASSERT(new_lock->l_export == NULL);
3169 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3174 if (new_lock->l_export == req->rq_export) {
3176 * Already gave this to the client, which means that we
3177 * reconstructed a reply.
3179 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3181 lh->mlh_reg_lh.cookie = 0;
3182 RETURN(ELDLM_LOCK_REPLACED);
3186 * Fixup the lock to be given to the client.
3188 lock_res_and_lock(new_lock);
3189 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3190 * possible blocking AST. */
3191 while (new_lock->l_readers > 0) {
3192 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3193 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3194 new_lock->l_readers--;
3196 while (new_lock->l_writers > 0) {
3197 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3198 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3199 new_lock->l_writers--;
3202 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3203 new_lock->l_blocking_ast = lock->l_blocking_ast;
3204 new_lock->l_completion_ast = lock->l_completion_ast;
3205 new_lock->l_remote_handle = lock->l_remote_handle;
3206 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3208 unlock_res_and_lock(new_lock);
3210 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3211 &new_lock->l_remote_handle,
3212 &new_lock->l_exp_hash);
3214 LDLM_LOCK_RELEASE(new_lock);
3215 lh->mlh_reg_lh.cookie = 0;
3217 RETURN(ELDLM_LOCK_REPLACED);
3220 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3221 struct ldlm_lock *new_lock,
3222 struct ldlm_lock **old_lock,
3223 struct mdt_lock_handle *lh)
3225 struct ptlrpc_request *req = mdt_info_req(info);
3226 struct obd_export *exp = req->rq_export;
3227 struct lustre_handle remote_hdl;
3228 struct ldlm_request *dlmreq;
3229 struct ldlm_lock *lock;
3231 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3234 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3235 remote_hdl = dlmreq->lock_handle[0];
3237 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3239 if (lock != new_lock) {
3240 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3241 lh->mlh_reg_mode = lock->l_granted_mode;
3243 LDLM_DEBUG(lock, "Restoring lock cookie");
3244 DEBUG_REQ(D_DLMTRACE, req,