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 2008 Sun Microsystems, Inc. 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 #include <lustre_acl.h>
71 #include <lustre_param.h>
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 ldlm_mode_t mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
96 * Initialized in mdt_mod_init().
98 unsigned long mdt_num_threads;
100 /* ptlrpc request handler for MDT. All handlers are
101 * grouped into several slices - struct mdt_opc_slice,
102 * and stored in an array - mdt_handlers[].
105 /* The name of this handler. */
107 /* Fail id for this handler, checked at the beginning of this handler*/
109 /* Operation code for this handler */
111 /* flags are listed in enum mdt_handler_flags below. */
113 /* The actual handler function to execute. */
114 int (*mh_act)(struct mdt_thread_info *info);
115 /* Request format for this request. */
116 const struct req_format *mh_fmt;
119 enum mdt_handler_flags {
121 * struct mdt_body is passed in the incoming message, and object
122 * identified by this fid exists on disk.
124 * "habeo corpus" == "I have a body"
126 HABEO_CORPUS = (1 << 0),
128 * struct ldlm_request is passed in the incoming message.
130 * "habeo clavis" == "I have a key"
132 HABEO_CLAVIS = (1 << 1),
134 * this request has fixed reply format, so that reply message can be
135 * packed by generic code.
137 * "habeo refero" == "I have a reply"
139 HABEO_REFERO = (1 << 2),
141 * this request will modify something, so check whether the filesystem
142 * is readonly or not, then return -EROFS to client asap if necessary.
144 * "mutabor" == "I shall modify"
149 struct mdt_opc_slice {
152 struct mdt_handler *mos_hs;
155 static struct mdt_opc_slice mdt_regular_handlers[];
156 static struct mdt_opc_slice mdt_readpage_handlers[];
157 static struct mdt_opc_slice mdt_xmds_handlers[];
158 static struct mdt_opc_slice mdt_seq_handlers[];
159 static struct mdt_opc_slice mdt_fld_handlers[];
161 static struct mdt_device *mdt_dev(struct lu_device *d);
162 static int mdt_regular_handle(struct ptlrpc_request *req);
163 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
165 static const struct lu_object_operations mdt_obj_ops;
167 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
171 return (rep->lock_policy_res1 & flag);
174 void mdt_clear_disposition(struct mdt_thread_info *info,
175 struct ldlm_reply *rep, int flag)
178 info->mti_opdata &= ~flag;
180 rep->lock_policy_res1 &= ~flag;
183 void mdt_set_disposition(struct mdt_thread_info *info,
184 struct ldlm_reply *rep, int flag)
187 info->mti_opdata |= flag;
189 rep->lock_policy_res1 |= flag;
192 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
194 lh->mlh_pdo_hash = 0;
195 lh->mlh_reg_mode = lm;
196 lh->mlh_type = MDT_REG_LOCK;
199 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
200 const char *name, int namelen)
202 lh->mlh_reg_mode = lm;
203 lh->mlh_type = MDT_PDO_LOCK;
206 LASSERT(namelen > 0);
207 lh->mlh_pdo_hash = full_name_hash(name, namelen);
209 LASSERT(namelen == 0);
210 lh->mlh_pdo_hash = 0ull;
214 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
215 struct mdt_lock_handle *lh)
221 * Any dir access needs couple of locks:
223 * 1) on part of dir we gonna take lookup/modify;
225 * 2) on whole dir to protect it from concurrent splitting and/or to
226 * flush client's cache for readdir().
228 * so, for a given mode and object this routine decides what lock mode
229 * to use for lock #2:
231 * 1) if caller's gonna lookup in dir then we need to protect dir from
232 * being splitted only - LCK_CR
234 * 2) if caller's gonna modify dir then we need to protect dir from
235 * being splitted and to flush cache - LCK_CW
237 * 3) if caller's gonna modify dir and that dir seems ready for
238 * splitting then we need to protect it from any type of access
239 * (lookup/modify/split) - LCK_EX --bzzz
242 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
243 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
246 * Ask underlaying level its opinion about preferable PDO lock mode
247 * having access type passed as regular lock mode:
249 * - MDL_MINMODE means that lower layer does not want to specify lock
252 * - MDL_NL means that no PDO lock should be taken. This is used in some
253 * cases. Say, for non-splittable directories no need to use PDO locks
256 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
257 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
259 if (mode != MDL_MINMODE) {
260 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
263 * Lower layer does not want to specify locking mode. We do it
264 * our selves. No special protection is needed, just flush
265 * client's cache on modification and allow concurrent
268 switch (lh->mlh_reg_mode) {
270 lh->mlh_pdo_mode = LCK_EX;
273 lh->mlh_pdo_mode = LCK_CR;
276 lh->mlh_pdo_mode = LCK_CW;
279 CERROR("Not expected lock type (0x%x)\n",
280 (int)lh->mlh_reg_mode);
285 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
289 static int mdt_getstatus(struct mdt_thread_info *info)
291 struct mdt_device *mdt = info->mti_mdt;
292 struct md_device *next = mdt->mdt_child;
293 struct mdt_body *repbody;
298 rc = mdt_check_ucred(info);
300 RETURN(err_serious(rc));
302 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
303 RETURN(err_serious(-ENOMEM));
305 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
306 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
310 repbody->valid |= OBD_MD_FLID;
312 if (mdt->mdt_opts.mo_mds_capa) {
313 struct mdt_object *root;
314 struct lustre_capa *capa;
316 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
318 RETURN(PTR_ERR(root));
320 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
322 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
324 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
326 mdt_object_put(info->mti_env, root);
328 repbody->valid |= OBD_MD_FLMDSCAPA;
334 static int mdt_statfs(struct mdt_thread_info *info)
336 struct md_device *next = info->mti_mdt->mdt_child;
337 struct ptlrpc_service *svc;
338 struct obd_statfs *osfs;
343 svc = info->mti_pill->rc_req->rq_rqbd->rqbd_service;
345 /* This will trigger a watchdog timeout */
346 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
347 (MDT_SERVICE_WATCHDOG_FACTOR *
348 at_get(&svc->srv_at_estimate) / 1000) + 1);
350 rc = mdt_check_ucred(info);
352 RETURN(err_serious(rc));
354 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
355 rc = err_serious(-ENOMEM);
357 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
358 rc = next->md_ops->mdo_statfs(info->mti_env, next,
360 statfs_pack(osfs, &info->mti_u.ksfs);
365 void mdt_pack_size2body(struct mdt_thread_info *info, struct mdt_object *o)
368 struct lu_attr *attr = &info->mti_attr.ma_attr;
370 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
372 /* Check if Size-on-MDS is enabled. */
373 if ((mdt_conn_flags(info) & OBD_CONNECT_SOM) &&
374 S_ISREG(attr->la_mode) && mdt_sizeonmds_enabled(o)) {
375 b->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
376 b->size = attr->la_size;
377 b->blocks = attr->la_blocks;
381 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
382 const struct lu_attr *attr, const struct lu_fid *fid)
384 /*XXX should pack the reply body according to lu_valid*/
385 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
386 OBD_MD_FLGID | OBD_MD_FLTYPE |
387 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
388 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
390 if (!S_ISREG(attr->la_mode))
391 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
393 b->atime = attr->la_atime;
394 b->mtime = attr->la_mtime;
395 b->ctime = attr->la_ctime;
396 b->mode = attr->la_mode;
397 b->size = attr->la_size;
398 b->blocks = attr->la_blocks;
399 b->uid = attr->la_uid;
400 b->gid = attr->la_gid;
401 b->flags = attr->la_flags;
402 b->nlink = attr->la_nlink;
403 b->rdev = attr->la_rdev;
407 b->valid |= OBD_MD_FLID;
409 /* FIXME: these should be fixed when new igif ready.*/
410 b->ino = fid_oid(fid); /* 1.6 compatibility */
411 b->generation = fid_ver(fid); /* 1.6 compatibility */
412 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
414 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
415 PFID(fid), b->nlink, b->mode, b->size);
419 mdt_body_reverse_idmap(info, b);
422 static inline int mdt_body_has_lov(const struct lu_attr *la,
423 const struct mdt_body *body)
425 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
426 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
429 static int mdt_getattr_internal(struct mdt_thread_info *info,
430 struct mdt_object *o)
432 struct md_object *next = mdt_object_child(o);
433 const struct mdt_body *reqbody = info->mti_body;
434 struct ptlrpc_request *req = mdt_info_req(info);
435 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
436 struct md_attr *ma = &info->mti_attr;
437 struct lu_attr *la = &ma->ma_attr;
438 struct req_capsule *pill = info->mti_pill;
439 const struct lu_env *env = info->mti_env;
440 struct mdt_body *repbody;
441 struct lu_buf *buffer = &info->mti_buf;
445 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
446 RETURN(err_serious(-ENOMEM));
448 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
452 rc = mdt_object_exists(o);
454 /* This object is located on remote node.*/
455 repbody->fid1 = *mdt_object_fid(o);
456 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
460 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
461 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
463 /* If it is dir object and client require MEA, then we got MEA */
464 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
465 reqbody->valid & OBD_MD_MEA) {
466 /* Assumption: MDT_MD size is enough for lmv size. */
467 ma->ma_lmv = buffer->lb_buf;
468 ma->ma_lmv_size = buffer->lb_len;
469 ma->ma_need = MA_LMV | MA_INODE;
471 ma->ma_lmm = buffer->lb_buf;
472 ma->ma_lmm_size = buffer->lb_len;
473 ma->ma_need = MA_LOV | MA_INODE;
476 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
477 reqbody->valid & OBD_MD_FLDIREA &&
478 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
479 /* get default stripe info for this dir. */
480 ma->ma_need |= MA_LOV_DEF;
482 rc = mo_attr_get(env, next, ma);
484 CERROR("getattr error for "DFID": %d\n",
485 PFID(mdt_object_fid(o)), rc);
489 if (likely(ma->ma_valid & MA_INODE))
490 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
494 if (mdt_body_has_lov(la, reqbody)) {
495 if (ma->ma_valid & MA_LOV) {
496 LASSERT(ma->ma_lmm_size);
497 mdt_dump_lmm(D_INFO, ma->ma_lmm);
498 repbody->eadatasize = ma->ma_lmm_size;
499 if (S_ISDIR(la->la_mode))
500 repbody->valid |= OBD_MD_FLDIREA;
502 repbody->valid |= OBD_MD_FLEASIZE;
504 if (ma->ma_valid & MA_LMV) {
505 LASSERT(S_ISDIR(la->la_mode));
506 repbody->eadatasize = ma->ma_lmv_size;
507 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
509 if (!(ma->ma_valid & MA_LOV) && !(ma->ma_valid & MA_LMV)) {
510 repbody->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
512 } else if (S_ISLNK(la->la_mode) &&
513 reqbody->valid & OBD_MD_LINKNAME) {
514 buffer->lb_buf = ma->ma_lmm;
515 buffer->lb_len = reqbody->eadatasize;
516 rc = mo_readlink(env, next, buffer);
517 if (unlikely(rc <= 0)) {
518 CERROR("readlink failed: %d\n", rc);
521 repbody->valid |= OBD_MD_LINKNAME;
522 repbody->eadatasize = rc;
524 ((char*)ma->ma_lmm)[rc - 1] = 0;
525 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
526 (char*)ma->ma_lmm, rc);
531 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
532 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
533 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
534 repbody->valid |= OBD_MD_FLMODEASIZE;
535 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
536 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
537 repbody->max_cookiesize);
540 if (med->med_rmtclient && (reqbody->valid & OBD_MD_FLRMTPERM)) {
541 void *buf = req_capsule_server_get(pill, &RMF_ACL);
543 /* mdt_getattr_lock only */
544 rc = mdt_pack_remote_perm(info, o, buf);
546 repbody->valid &= ~OBD_MD_FLRMTPERM;
547 repbody->aclsize = 0;
550 repbody->valid |= OBD_MD_FLRMTPERM;
551 repbody->aclsize = sizeof(struct mdt_remote_perm);
554 #ifdef CONFIG_FS_POSIX_ACL
555 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
556 (reqbody->valid & OBD_MD_FLACL)) {
557 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
558 buffer->lb_len = req_capsule_get_size(pill,
559 &RMF_ACL, RCL_SERVER);
560 if (buffer->lb_len > 0) {
561 rc = mo_xattr_get(env, next, buffer,
562 XATTR_NAME_ACL_ACCESS);
564 if (rc == -ENODATA) {
565 repbody->aclsize = 0;
566 repbody->valid |= OBD_MD_FLACL;
568 } else if (rc == -EOPNOTSUPP) {
571 CERROR("got acl size: %d\n", rc);
574 repbody->aclsize = rc;
575 repbody->valid |= OBD_MD_FLACL;
582 if ((reqbody->valid & OBD_MD_FLMDSCAPA) &&
583 info->mti_mdt->mdt_opts.mo_mds_capa) {
584 struct lustre_capa *capa;
586 capa = req_capsule_server_get(pill, &RMF_CAPA1);
588 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
589 rc = mo_capa_get(env, next, capa, 0);
592 repbody->valid |= OBD_MD_FLMDSCAPA;
597 static int mdt_renew_capa(struct mdt_thread_info *info)
599 struct mdt_device *mdt = info->mti_mdt;
600 struct mdt_object *obj = info->mti_object;
601 struct mdt_body *body;
602 struct lustre_capa *capa, *c;
606 /* if object doesn't exist, or server has disabled capability,
607 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
610 if (!obj || !mdt->mdt_opts.mo_mds_capa)
613 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
614 LASSERT(body != NULL);
616 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
619 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
623 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
625 body->valid |= OBD_MD_FLOSSCAPA;
629 static int mdt_getattr(struct mdt_thread_info *info)
631 struct mdt_object *obj = info->mti_object;
632 struct req_capsule *pill = info->mti_pill;
633 struct mdt_body *reqbody;
634 struct mdt_body *repbody;
640 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
643 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
644 rc = req_capsule_server_pack(pill);
646 RETURN(err_serious(rc));
647 rc = mdt_renew_capa(info);
648 GOTO(out_shrink, rc);
651 LASSERT(obj != NULL);
652 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
654 mode = lu_object_attr(&obj->mot_obj.mo_lu);
655 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
656 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
657 md_size = reqbody->eadatasize;
659 md_size = info->mti_mdt->mdt_max_mdsize;
661 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
663 rc = req_capsule_server_pack(pill);
664 if (unlikely(rc != 0))
665 RETURN(err_serious(rc));
667 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
668 LASSERT(repbody != NULL);
669 repbody->eadatasize = 0;
670 repbody->aclsize = 0;
672 if (reqbody->valid & OBD_MD_FLRMTPERM)
673 rc = mdt_init_ucred(info, reqbody);
675 rc = mdt_check_ucred(info);
677 GOTO(out_shrink, rc);
679 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
680 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
683 * Don't check capability at all, because rename might getattr for
684 * remote obj, and at that time no capability is available.
686 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
687 rc = mdt_getattr_internal(info, obj);
688 if (reqbody->valid & OBD_MD_FLRMTPERM)
689 mdt_exit_ucred(info);
692 mdt_shrink_reply(info);
696 static int mdt_is_subdir(struct mdt_thread_info *info)
698 struct mdt_object *o = info->mti_object;
699 struct req_capsule *pill = info->mti_pill;
700 const struct mdt_body *body = info->mti_body;
701 struct mdt_body *repbody;
707 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
710 * We save last checked parent fid to @repbody->fid1 for remote
713 LASSERT(fid_is_sane(&body->fid2));
714 LASSERT(mdt_object_exists(o) > 0);
715 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
716 &body->fid2, &repbody->fid1);
717 if (rc == 0 || rc == -EREMOTE)
718 repbody->valid |= OBD_MD_FLID;
723 static int mdt_raw_lookup(struct mdt_thread_info *info,
724 struct mdt_object *parent,
725 const struct lu_name *lname,
726 struct ldlm_reply *ldlm_rep)
728 struct md_object *next = mdt_object_child(info->mti_object);
729 const struct mdt_body *reqbody = info->mti_body;
730 struct lu_fid *child_fid = &info->mti_tmp_fid1;
731 struct mdt_body *repbody;
735 if (reqbody->valid != OBD_MD_FLID)
738 LASSERT(!info->mti_cross_ref);
740 /* Only got the fid of this obj by name */
741 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
744 /* XXX is raw_lookup possible as intent operation? */
747 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
750 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
752 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
755 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
756 repbody->fid1 = *child_fid;
757 repbody->valid = OBD_MD_FLID;
763 * UPDATE lock should be taken against parent, and be release before exit;
764 * child_bits lock should be taken against child, and be returned back:
765 * (1)normal request should release the child lock;
766 * (2)intent request will grant the lock to client.
768 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
769 struct mdt_lock_handle *lhc,
771 struct ldlm_reply *ldlm_rep)
773 struct ptlrpc_request *req = mdt_info_req(info);
774 struct mdt_body *reqbody = NULL;
775 struct mdt_object *parent = info->mti_object;
776 struct mdt_object *child;
777 struct md_object *next = mdt_object_child(parent);
778 struct lu_fid *child_fid = &info->mti_tmp_fid1;
779 struct lu_name *lname = NULL;
780 const char *name = NULL;
782 struct mdt_lock_handle *lhp;
783 struct ldlm_lock *lock;
784 struct ldlm_res_id *res_id;
790 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
791 LASSERT(ergo(is_resent,
792 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
794 LASSERT(parent != NULL);
795 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
797 RETURN(err_serious(-EFAULT));
799 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
801 if (!info->mti_cross_ref) {
803 * XXX: Check for "namelen == 0" is for getattr by fid
804 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
805 * that is the name must contain at least one character and
806 * the terminating '\0'
809 reqbody = req_capsule_client_get(info->mti_pill,
811 LASSERT(fid_is_sane(&reqbody->fid2));
814 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
816 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
819 lname = mdt_name(info->mti_env, (char *)name, namelen);
820 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
821 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
825 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
827 rc = mdt_object_exists(parent);
828 if (unlikely(rc == 0)) {
829 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
830 &parent->mot_obj.mo_lu,
831 "Parent doesn't exist!\n");
833 } else if (!info->mti_cross_ref) {
834 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
835 PFID(mdt_object_fid(parent)));
838 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
846 if (info->mti_cross_ref) {
847 /* Only getattr on the child. Parent is on another node. */
848 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
850 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
851 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
854 /* Do not take lock for resent case. */
855 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
856 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
857 lhc->mlh_reg_lh.cookie);
858 LASSERT(fid_res_name_eq(mdt_object_fid(child),
859 &lock->l_resource->lr_name));
863 mdt_lock_handle_init(lhc);
864 mdt_lock_reg_init(lhc, LCK_PR);
867 * Object's name is on another MDS, no lookup lock is
868 * needed here but update is.
870 child_bits &= ~MDS_INODELOCK_LOOKUP;
871 child_bits |= MDS_INODELOCK_UPDATE;
873 rc = mdt_object_lock(info, child, lhc, child_bits,
877 /* Finally, we can get attr for child. */
878 mdt_set_capainfo(info, 0, mdt_object_fid(child),
880 rc = mdt_getattr_internal(info, child);
881 if (unlikely(rc != 0))
882 mdt_object_unlock(info, child, lhc, 1);
887 /* step 1: lock parent */
888 lhp = &info->mti_lh[MDT_LH_PARENT];
889 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
890 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
893 if (unlikely(rc != 0))
897 /* step 2: lookup child's fid by name */
898 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
903 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
904 GOTO(out_parent, rc);
906 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
908 *child_fid = reqbody->fid2;
909 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
913 *step 3: find the child object by fid & lock it.
914 * regardless if it is local or remote.
916 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
918 if (unlikely(IS_ERR(child)))
919 GOTO(out_parent, rc = PTR_ERR(child));
921 /* Do not take lock for resent case. */
922 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
923 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
924 lhc->mlh_reg_lh.cookie);
926 res_id = &lock->l_resource->lr_name;
927 if (!fid_res_name_eq(mdt_object_fid(child),
928 &lock->l_resource->lr_name)) {
929 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
930 &lock->l_resource->lr_name),
931 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
932 (unsigned long)res_id->name[0],
933 (unsigned long)res_id->name[1],
934 (unsigned long)res_id->name[2],
935 PFID(mdt_object_fid(parent)));
936 CWARN("Although resent, but still not get child lock"
937 "parent:"DFID" child:"DFID"\n",
938 PFID(mdt_object_fid(parent)),
939 PFID(mdt_object_fid(child)));
940 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
949 ma = &info->mti_attr;
951 mdt_lock_handle_init(lhc);
952 mdt_lock_reg_init(lhc, LCK_PR);
954 if (mdt_object_exists(child) == 0) {
955 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
956 &child->mot_obj.mo_lu,
957 "Object doesn't exist!\n");
958 GOTO(out_child, rc = -ESTALE);
962 ma->ma_need = MA_INODE;
963 rc = mo_attr_get(info->mti_env, next, ma);
964 if (unlikely(rc != 0))
967 /* If the file has not been changed for some time, we return
968 * not only a LOOKUP lock, but also an UPDATE lock and this
969 * might save us RPC on later STAT. For directories, it also
970 * let negative dentry starts working for this dir. */
971 if (ma->ma_valid & MA_INODE &&
972 ma->ma_attr.la_valid & LA_CTIME &&
973 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
974 ma->ma_attr.la_ctime < cfs_time_current_sec())
975 child_bits |= MDS_INODELOCK_UPDATE;
977 rc = mdt_object_lock(info, child, lhc, child_bits,
980 if (unlikely(rc != 0))
984 /* finally, we can get attr for child. */
985 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
986 rc = mdt_getattr_internal(info, child);
987 if (unlikely(rc != 0)) {
988 mdt_object_unlock(info, child, lhc, 1);
990 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
992 struct mdt_body *repbody;
994 /* Debugging code. */
995 res_id = &lock->l_resource->lr_name;
996 LDLM_DEBUG(lock, "Returning lock to client\n");
997 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
998 &lock->l_resource->lr_name),
999 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1000 (unsigned long)res_id->name[0],
1001 (unsigned long)res_id->name[1],
1002 (unsigned long)res_id->name[2],
1003 PFID(mdt_object_fid(child)));
1005 * Pack Size-on-MDS inode attributes to the body if
1006 * update lock is given.
1008 repbody = req_capsule_server_get(info->mti_pill,
1010 if (lock->l_policy_data.l_inodebits.bits &
1011 MDS_INODELOCK_UPDATE)
1012 mdt_pack_size2body(info, child);
1013 LDLM_LOCK_PUT(lock);
1018 mdt_object_put(info->mti_env, child);
1020 mdt_object_unlock(info, parent, lhp, 1);
1024 /* normal handler: should release the child lock */
1025 static int mdt_getattr_name(struct mdt_thread_info *info)
1027 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1028 struct mdt_body *reqbody;
1029 struct mdt_body *repbody;
1033 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1034 LASSERT(reqbody != NULL);
1035 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1036 LASSERT(repbody != NULL);
1038 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1039 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1040 repbody->eadatasize = 0;
1041 repbody->aclsize = 0;
1043 rc = mdt_init_ucred(info, reqbody);
1045 GOTO(out_shrink, rc);
1047 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1048 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1049 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1050 lhc->mlh_reg_lh.cookie = 0;
1052 mdt_exit_ucred(info);
1055 mdt_shrink_reply(info);
1059 static const struct lu_device_operations mdt_lu_ops;
1061 static int lu_device_is_mdt(struct lu_device *d)
1063 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1066 static int mdt_set_info(struct mdt_thread_info *info)
1068 struct ptlrpc_request *req = mdt_info_req(info);
1074 rc = req_capsule_server_pack(info->mti_pill);
1078 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1080 DEBUG_REQ(D_HA, req, "no set_info key");
1084 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1087 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1089 DEBUG_REQ(D_HA, req, "no set_info val");
1093 if (!KEY_IS(KEY_READ_ONLY))
1097 lustre_msg_set_status(req->rq_repmsg, 0);
1099 spin_lock(&req->rq_export->exp_lock);
1101 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1103 req->rq_export->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1104 spin_unlock(&req->rq_export->exp_lock);
1109 static int mdt_connect(struct mdt_thread_info *info)
1112 struct ptlrpc_request *req;
1114 req = mdt_info_req(info);
1115 rc = target_handle_connect(req);
1117 LASSERT(req->rq_export != NULL);
1118 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1119 rc = mdt_init_idmap(info);
1121 /* if mdt_init_idmap failed, revocation for connect */
1122 obd_disconnect(class_export_get(req->rq_export));
1124 rc = err_serious(rc);
1128 static int mdt_disconnect(struct mdt_thread_info *info)
1133 rc = target_handle_disconnect(mdt_info_req(info));
1135 rc = err_serious(rc);
1139 static int mdt_sendpage(struct mdt_thread_info *info,
1140 struct lu_rdpg *rdpg)
1142 struct ptlrpc_request *req = mdt_info_req(info);
1143 struct ptlrpc_bulk_desc *desc;
1144 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1152 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1157 for (i = 0, tmpcount = rdpg->rp_count;
1158 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1159 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1160 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1163 LASSERT(desc->bd_nob == rdpg->rp_count);
1164 rc = ptlrpc_start_bulk_transfer(desc);
1166 GOTO(free_desc, rc);
1168 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1169 GOTO(abort_bulk, rc = 0);
1171 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1173 CERROR("Req deadline already passed %lu (now: %lu)\n",
1174 req->rq_deadline, cfs_time_current_sec());
1175 *lwi = LWI_TIMEOUT(max(timeout, 1) * HZ, NULL, NULL);
1176 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), lwi);
1177 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1180 if (desc->bd_success &&
1181 desc->bd_nob_transferred == rdpg->rp_count)
1182 GOTO(free_desc, rc);
1184 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
1187 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1188 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1189 desc->bd_nob_transferred, rdpg->rp_count,
1190 req->rq_export->exp_client_uuid.uuid,
1191 req->rq_export->exp_connection->c_remote_uuid.uuid);
1193 class_fail_export(req->rq_export);
1197 ptlrpc_abort_bulk(desc);
1199 ptlrpc_free_bulk(desc);
1203 #ifdef HAVE_SPLIT_SUPPORT
1205 * Retrieve dir entry from the page and insert it to the slave object, actually,
1206 * this should be in osd layer, but since it will not in the final product, so
1207 * just do it here and do not define more moo api anymore for this.
1209 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1212 struct mdt_object *object = info->mti_object;
1213 struct lu_fid *lf = &info->mti_tmp_fid2;
1214 struct md_attr *ma = &info->mti_attr;
1215 struct lu_dirpage *dp;
1216 struct lu_dirent *ent;
1217 int rc = 0, offset = 0;
1220 /* Make sure we have at least one entry. */
1225 * Disable trans for this name insert, since it will include many trans
1228 info->mti_no_need_trans = 1;
1230 * When write_dir_page, no need update parent's ctime,
1231 * and no permission check for name_insert.
1233 ma->ma_attr.la_ctime = 0;
1234 ma->ma_attr.la_valid = LA_MODE;
1235 ma->ma_valid = MA_INODE;
1238 dp = page_address(page);
1239 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1241 for (ent = lu_dirent_start(dp); ent != NULL;
1242 ent = lu_dirent_next(ent)) {
1243 struct lu_name *lname;
1246 if (le16_to_cpu(ent->lde_namelen) == 0)
1249 fid_le_to_cpu(lf, &ent->lde_fid);
1250 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1251 ma->ma_attr.la_mode = S_IFDIR;
1253 ma->ma_attr.la_mode = 0;
1254 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1256 GOTO(out, rc = -ENOMEM);
1258 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1259 lname = mdt_name(info->mti_env, name,
1260 le16_to_cpu(ent->lde_namelen));
1261 ma->ma_attr_flags |= MDS_PERM_BYPASS;
1262 rc = mdo_name_insert(info->mti_env,
1263 md_object_next(&object->mot_obj),
1265 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1267 CERROR("Can't insert %*.*s, rc %d\n",
1268 le16_to_cpu(ent->lde_namelen),
1269 le16_to_cpu(ent->lde_namelen),
1274 offset += lu_dirent_size(ent);
1284 static int mdt_bulk_timeout(void *data)
1288 CERROR("mdt bulk transfer timeout \n");
1293 static int mdt_writepage(struct mdt_thread_info *info)
1295 struct ptlrpc_request *req = mdt_info_req(info);
1296 struct mdt_body *reqbody;
1297 struct l_wait_info *lwi;
1298 struct ptlrpc_bulk_desc *desc;
1304 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1305 if (reqbody == NULL)
1306 RETURN(err_serious(-EFAULT));
1308 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1310 RETURN(err_serious(-ENOMEM));
1312 /* allocate the page for the desc */
1313 page = cfs_alloc_page(CFS_ALLOC_STD);
1315 GOTO(desc_cleanup, rc = -ENOMEM);
1317 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1318 (int)reqbody->size, (int)reqbody->nlink);
1320 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1321 (int)reqbody->nlink);
1324 * Check if client was evicted while we were doing i/o before touching
1329 GOTO(cleanup_page, rc = -ENOMEM);
1331 if (desc->bd_export->exp_failed)
1334 rc = ptlrpc_start_bulk_transfer (desc);
1336 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * HZ / 4, HZ,
1337 mdt_bulk_timeout, desc);
1338 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1339 desc->bd_export->exp_failed, lwi);
1340 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1341 if (rc == -ETIMEDOUT) {
1342 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1343 ptlrpc_abort_bulk(desc);
1344 } else if (desc->bd_export->exp_failed) {
1345 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1347 ptlrpc_abort_bulk(desc);
1348 } else if (!desc->bd_success ||
1349 desc->bd_nob_transferred != desc->bd_nob) {
1350 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1352 "truncated" : "network error on",
1353 desc->bd_nob_transferred, desc->bd_nob);
1354 /* XXX should this be a different errno? */
1358 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1361 GOTO(cleanup_lwi, rc);
1362 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1367 cfs_free_page(page);
1369 ptlrpc_free_bulk(desc);
1374 static int mdt_readpage(struct mdt_thread_info *info)
1376 struct mdt_object *object = info->mti_object;
1377 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1378 struct mdt_body *reqbody;
1379 struct mdt_body *repbody;
1384 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1385 RETURN(err_serious(-ENOMEM));
1387 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1388 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1389 if (reqbody == NULL || repbody == NULL)
1390 RETURN(err_serious(-EFAULT));
1393 * prepare @rdpg before calling lower layers and transfer itself. Here
1394 * reqbody->size contains offset of where to start to read and
1395 * reqbody->nlink contains number bytes to read.
1397 rdpg->rp_hash = reqbody->size;
1398 if (rdpg->rp_hash != reqbody->size) {
1399 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1400 rdpg->rp_hash, reqbody->size);
1403 rdpg->rp_count = reqbody->nlink;
1404 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1405 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1406 if (rdpg->rp_pages == NULL)
1409 for (i = 0; i < rdpg->rp_npages; ++i) {
1410 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1411 if (rdpg->rp_pages[i] == NULL)
1412 GOTO(free_rdpg, rc = -ENOMEM);
1415 /* call lower layers to fill allocated pages with directory data */
1416 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1418 GOTO(free_rdpg, rc);
1420 /* send pages to client */
1421 rc = mdt_sendpage(info, rdpg);
1426 for (i = 0; i < rdpg->rp_npages; i++)
1427 if (rdpg->rp_pages[i] != NULL)
1428 cfs_free_page(rdpg->rp_pages[i]);
1429 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1431 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1437 static int mdt_reint_internal(struct mdt_thread_info *info,
1438 struct mdt_lock_handle *lhc,
1441 struct req_capsule *pill = info->mti_pill;
1442 struct mdt_device *mdt = info->mti_mdt;
1443 struct mdt_body *repbody;
1448 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1449 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1450 mdt->mdt_max_mdsize);
1451 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1452 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1453 mdt->mdt_max_cookiesize);
1455 rc = req_capsule_server_pack(pill);
1457 CERROR("Can't pack response, rc %d\n", rc);
1458 RETURN(err_serious(rc));
1461 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1462 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1464 repbody->eadatasize = 0;
1465 repbody->aclsize = 0;
1468 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1469 GOTO(out_shrink, rc = err_serious(-EFAULT));
1471 rc = mdt_reint_unpack(info, op);
1473 CERROR("Can't unpack reint, rc %d\n", rc);
1474 GOTO(out_shrink, rc = err_serious(rc));
1477 rc = mdt_init_ucred_reint(info);
1479 GOTO(out_shrink, rc);
1481 rc = mdt_fix_attr_ucred(info, op);
1483 GOTO(out_ucred, rc = err_serious(rc));
1485 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1486 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1487 GOTO(out_ucred, rc);
1489 rc = mdt_reint_rec(info, lhc);
1492 mdt_exit_ucred(info);
1494 mdt_shrink_reply(info);
1498 static long mdt_reint_opcode(struct mdt_thread_info *info,
1499 const struct req_format **fmt)
1501 struct mdt_rec_reint *rec;
1504 opc = err_serious(-EFAULT);
1505 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1507 opc = rec->rr_opcode;
1508 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1509 if (opc < REINT_MAX && fmt[opc] != NULL)
1510 req_capsule_extend(info->mti_pill, fmt[opc]);
1512 CERROR("Unsupported opc: %ld\n", opc);
1513 opc = err_serious(opc);
1519 static int mdt_reint(struct mdt_thread_info *info)
1524 static const struct req_format *reint_fmts[REINT_MAX] = {
1525 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1526 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1527 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1528 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1529 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1530 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1531 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1536 opc = mdt_reint_opcode(info, reint_fmts);
1539 * No lock possible here from client to pass it to reint code
1542 rc = mdt_reint_internal(info, NULL, opc);
1547 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1551 /* this should sync the whole device */
1552 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1554 struct dt_device *dt = mdt->mdt_bottom;
1558 rc = dt->dd_ops->dt_sync(env, dt);
1562 /* this should sync this object */
1563 static int mdt_object_sync(struct mdt_thread_info *info)
1565 struct md_object *next;
1569 if (!mdt_object_exists(info->mti_object)) {
1570 CWARN("Non existing object "DFID"!\n",
1571 PFID(mdt_object_fid(info->mti_object)));
1574 next = mdt_object_child(info->mti_object);
1575 rc = mo_object_sync(info->mti_env, next);
1580 static int mdt_sync(struct mdt_thread_info *info)
1582 struct req_capsule *pill = info->mti_pill;
1583 struct mdt_body *body;
1587 /* The fid may be zero, so we req_capsule_set manually */
1588 req_capsule_set(pill, &RQF_MDS_SYNC);
1590 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1592 RETURN(err_serious(-EINVAL));
1594 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1595 RETURN(err_serious(-ENOMEM));
1597 if (fid_seq(&body->fid1) == 0) {
1598 /* sync the whole device */
1599 rc = req_capsule_server_pack(pill);
1601 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1603 rc = err_serious(rc);
1605 /* sync an object */
1606 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1608 rc = mdt_object_sync(info);
1610 struct md_object *next;
1611 const struct lu_fid *fid;
1612 struct lu_attr *la = &info->mti_attr.ma_attr;
1614 next = mdt_object_child(info->mti_object);
1615 info->mti_attr.ma_need = MA_INODE;
1616 info->mti_attr.ma_valid = 0;
1617 rc = mo_attr_get(info->mti_env, next,
1620 body = req_capsule_server_get(pill,
1622 fid = mdt_object_fid(info->mti_object);
1623 mdt_pack_attr2body(info, body, la, fid);
1627 rc = err_serious(rc);
1632 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1634 return err_serious(-EOPNOTSUPP);
1637 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1639 return err_serious(-EOPNOTSUPP);
1643 * OBD PING and other handlers.
1645 static int mdt_obd_ping(struct mdt_thread_info *info)
1650 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1652 rc = target_handle_ping(mdt_info_req(info));
1654 rc = err_serious(rc);
1658 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1660 return err_serious(-EOPNOTSUPP);
1663 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1665 return err_serious(-EOPNOTSUPP);
1672 static struct ldlm_callback_suite cbs = {
1673 .lcs_completion = ldlm_server_completion_ast,
1674 .lcs_blocking = ldlm_server_blocking_ast,
1678 static int mdt_enqueue(struct mdt_thread_info *info)
1680 struct ptlrpc_request *req;
1685 * info->mti_dlm_req already contains swapped and (if necessary)
1686 * converted dlm request.
1688 LASSERT(info->mti_dlm_req != NULL);
1690 req = mdt_info_req(info);
1693 * Lock without inodebits makes no sense and will oops later in
1694 * ldlm. Let's check it now to see if we have wrong lock from client or
1695 * bits get corrupted somewhere in mdt_intent_policy().
1697 req_bits = info->mti_dlm_req->lock_desc.l_policy_data.l_inodebits.bits;
1698 /* This is disabled because we need to support liblustre flock.
1699 * LASSERT(req_bits != 0);
1702 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
1703 req, info->mti_dlm_req, &cbs);
1704 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
1705 return rc ? err_serious(rc) : req->rq_status;
1708 static int mdt_convert(struct mdt_thread_info *info)
1711 struct ptlrpc_request *req;
1713 LASSERT(info->mti_dlm_req);
1714 req = mdt_info_req(info);
1715 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
1716 return rc ? err_serious(rc) : req->rq_status;
1719 static int mdt_bl_callback(struct mdt_thread_info *info)
1721 CERROR("bl callbacks should not happen on MDS\n");
1723 return err_serious(-EOPNOTSUPP);
1726 static int mdt_cp_callback(struct mdt_thread_info *info)
1728 CERROR("cp callbacks should not happen on MDS\n");
1730 return err_serious(-EOPNOTSUPP);
1734 * sec context handlers
1736 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
1740 rc = mdt_handle_idmap(info);
1743 struct ptlrpc_request *req = mdt_info_req(info);
1746 opc = lustre_msg_get_opc(req->rq_reqmsg);
1747 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
1748 sptlrpc_svc_ctx_invalidate(req);
1751 OBD_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, obd_fail_val);
1756 static struct mdt_object *mdt_obj(struct lu_object *o)
1758 LASSERT(lu_device_is_mdt(o->lo_dev));
1759 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
1762 struct mdt_object *mdt_object_find(const struct lu_env *env,
1763 struct mdt_device *d,
1764 const struct lu_fid *f)
1766 struct lu_object *o;
1767 struct mdt_object *m;
1770 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
1771 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
1772 if (unlikely(IS_ERR(o)))
1773 m = (struct mdt_object *)o;
1780 * Asyncronous commit for mdt device.
1782 * Pass asynchonous commit call down the MDS stack.
1784 * \param env environment
1785 * \param mdt the mdt device
1787 static void mdt_device_commit_async(const struct lu_env *env,
1788 struct mdt_device *mdt)
1790 struct dt_device *dt = mdt->mdt_bottom;
1793 rc = dt->dd_ops->dt_commit_async(env, dt);
1794 if (unlikely(rc != 0))
1795 CWARN("async commit start failed with rc = %d", rc);
1799 * Mark the lock as "synchonous".
1801 * Mark the lock to deffer transaction commit to the unlock time.
1803 * \param lock the lock to mark as "synchonous"
1805 * \see mdt_is_lock_sync
1806 * \see mdt_save_lock
1808 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
1810 lock->l_ast_data = (void*)1;
1814 * Check whehter the lock "synchonous" or not.
1816 * \param lock the lock to check
1817 * \retval 1 the lock is "synchonous"
1818 * \retval 0 the lock isn't "synchronous"
1820 * \see mdt_set_lock_sync
1821 * \see mdt_save_lock
1823 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
1825 return lock->l_ast_data != NULL;
1829 * Blocking AST for mdt locks.
1831 * Starts transaction commit if in case of COS lock conflict or
1832 * deffers such a commit to the mdt_save_lock.
1834 * \param lock the lock which blocks a request or cancelling lock
1835 * \param desc unused
1836 * \param data unused
1837 * \param flag indicates whether this cancelling or blocking callback
1839 * \see ldlm_blocking_ast_nocheck
1841 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1842 void *data, int flag)
1844 struct obd_device *obd = lock->l_resource->lr_namespace->ns_obd;
1845 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1849 if (flag == LDLM_CB_CANCELING)
1851 lock_res_and_lock(lock);
1852 if (lock->l_blocking_ast != mdt_blocking_ast) {
1853 unlock_res_and_lock(lock);
1856 if (mdt_cos_is_enabled(mdt) &&
1857 lock->l_req_mode & (LCK_PW | LCK_EX) &&
1858 lock->l_blocking_lock != NULL &&
1859 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
1860 mdt_set_lock_sync(lock);
1862 rc = ldlm_blocking_ast_nocheck(lock);
1864 /* There is no lock conflict if l_blocking_lock == NULL,
1865 * it indicates a blocking ast sent from ldlm_lock_decref_internal
1866 * when the last reference to a local lock was released */
1867 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
1870 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
1871 if (unlikely(rc != 0))
1872 CWARN("lu_env initialization failed with rc = %d,"
1873 "cannot start asynchronous commit\n", rc);
1875 mdt_device_commit_async(&env, mdt);
1881 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
1882 struct mdt_lock_handle *lh, __u64 ibits, int locality)
1884 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
1885 ldlm_policy_data_t *policy = &info->mti_policy;
1886 struct ldlm_res_id *res_id = &info->mti_res_id;
1890 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
1891 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
1892 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
1893 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
1895 if (mdt_object_exists(o) < 0) {
1896 if (locality == MDT_CROSS_LOCK) {
1897 /* cross-ref object fix */
1898 ibits &= ~MDS_INODELOCK_UPDATE;
1899 ibits |= MDS_INODELOCK_LOOKUP;
1901 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
1902 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
1904 /* No PDO lock on remote object */
1905 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
1908 if (lh->mlh_type == MDT_PDO_LOCK) {
1909 /* check for exists after object is locked */
1910 if (mdt_object_exists(o) == 0) {
1911 /* Non-existent object shouldn't have PDO lock */
1914 /* Non-dir object shouldn't have PDO lock */
1915 LASSERT(S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)));
1919 memset(policy, 0, sizeof(*policy));
1920 fid_build_reg_res_name(mdt_object_fid(o), res_id);
1923 * Take PDO lock on whole directory and build correct @res_id for lock
1924 * on part of directory.
1926 if (lh->mlh_pdo_hash != 0) {
1927 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
1928 mdt_lock_pdo_mode(info, o, lh);
1929 if (lh->mlh_pdo_mode != LCK_NL) {
1931 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
1932 * is never going to be sent to client and we do not
1933 * want it slowed down due to possible cancels.
1935 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
1936 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
1937 policy, res_id, LDLM_FL_ATOMIC_CB,
1938 &info->mti_exp->exp_handle.h_cookie);
1944 * Finish res_id initializing by name hash marking part of
1945 * directory which is taking modification.
1947 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
1950 policy->l_inodebits.bits = ibits;
1953 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
1954 * going to be sent to client. If it is - mdt_intent_policy() path will
1955 * fix it up and turn FL_LOCAL flag off.
1957 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
1958 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
1959 &info->mti_exp->exp_handle.h_cookie);
1965 mdt_object_unlock(info, o, lh, 1);
1972 * Save a lock within request object.
1974 * Keep the lock referenced until whether client ACK or transaction
1975 * commit happens or release the lock immediately depending on input
1976 * parameters. If COS is ON, a write lock is converted to COS lock
1979 * \param info thead info object
1980 * \param h lock handle
1981 * \param mode lock mode
1982 * \param decref force immediate lock releasing
1985 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
1986 ldlm_mode_t mode, int decref)
1990 if (lustre_handle_is_used(h)) {
1991 if (decref || !info->mti_has_trans ||
1992 !(mode & (LCK_PW | LCK_EX))){
1993 mdt_fid_unlock(h, mode);
1995 struct mdt_device *mdt = info->mti_mdt;
1996 struct ldlm_lock *lock = ldlm_handle2lock(h);
1997 struct ptlrpc_request *req = mdt_info_req(info);
2000 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2002 CDEBUG(D_HA, "request = %p reply state = %p"
2003 " transno = "LPD64"\n",
2004 req, req->rq_reply_state, req->rq_transno);
2005 if (mdt_cos_is_enabled(mdt)) {
2007 ldlm_lock_downgrade(lock, LCK_COS);
2010 ptlrpc_save_lock(req, h, mode, no_ack);
2011 if (mdt_is_lock_sync(lock)) {
2012 CDEBUG(D_HA, "found sync-lock,"
2013 " async commit started\n");
2014 mdt_device_commit_async(info->mti_env,
2017 LDLM_LOCK_PUT(lock);
2026 * Unlock mdt object.
2028 * Immeditely release the regular lock and the PDO lock or save the
2029 * lock in reqeuest and keep them referenced until client ACK or
2030 * transaction commit.
2032 * \param info thread info object
2033 * \param o mdt object
2034 * \param h mdt lock handle referencing regular and PDO locks
2035 * \param decref force immediate lock releasing
2037 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2038 struct mdt_lock_handle *lh, int decref)
2042 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2043 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2048 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2049 const struct lu_fid *f,
2050 struct mdt_lock_handle *lh,
2053 struct mdt_object *o;
2055 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2059 rc = mdt_object_lock(info, o, lh, ibits,
2062 mdt_object_put(info->mti_env, o);
2069 void mdt_object_unlock_put(struct mdt_thread_info * info,
2070 struct mdt_object * o,
2071 struct mdt_lock_handle *lh,
2074 mdt_object_unlock(info, o, lh, decref);
2075 mdt_object_put(info->mti_env, o);
2078 static struct mdt_handler *mdt_handler_find(__u32 opc,
2079 struct mdt_opc_slice *supported)
2081 struct mdt_opc_slice *s;
2082 struct mdt_handler *h;
2085 for (s = supported; s->mos_hs != NULL; s++) {
2086 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2087 h = s->mos_hs + (opc - s->mos_opc_start);
2088 if (likely(h->mh_opc != 0))
2089 LASSERT(h->mh_opc == opc);
2091 h = NULL; /* unsupported opc */
2098 static int mdt_lock_resname_compat(struct mdt_device *m,
2099 struct ldlm_request *req)
2101 /* XXX something... later. */
2105 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2107 /* XXX something... later. */
2112 * Generic code handling requests that have struct mdt_body passed in:
2114 * - extract mdt_body from request and save it in @info, if present;
2116 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2119 * - if HABEO_CORPUS flag is set for this request type check whether object
2120 * actually exists on storage (lu_object_exists()).
2123 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2125 const struct mdt_body *body;
2126 struct mdt_object *obj;
2127 const struct lu_env *env;
2128 struct req_capsule *pill;
2132 env = info->mti_env;
2133 pill = info->mti_pill;
2135 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2139 if (!(body->valid & OBD_MD_FLID))
2142 if (!fid_is_sane(&body->fid1)) {
2143 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2148 * Do not get size or any capa fields before we check that request
2149 * contains capa actually. There are some requests which do not, for
2150 * instance MDS_IS_SUBDIR.
2152 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2153 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2154 mdt_set_capainfo(info, 0, &body->fid1,
2155 req_capsule_client_get(pill, &RMF_CAPA1));
2157 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2159 if ((flags & HABEO_CORPUS) &&
2160 !mdt_object_exists(obj)) {
2161 mdt_object_put(env, obj);
2162 /* for capability renew ENOENT will be handled in
2164 if (body->valid & OBD_MD_FLOSSCAPA)
2169 info->mti_object = obj;
2178 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2180 struct req_capsule *pill = info->mti_pill;
2184 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2185 rc = mdt_body_unpack(info, flags);
2189 if (rc == 0 && (flags & HABEO_REFERO)) {
2190 struct mdt_device *mdt = info->mti_mdt;
2193 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2194 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2195 mdt->mdt_max_mdsize);
2196 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2197 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2198 mdt->mdt_max_cookiesize);
2200 rc = req_capsule_server_pack(pill);
2205 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2207 struct md_device *next = m->mdt_child;
2209 return next->md_ops->mdo_init_capa_ctxt(env, next,
2210 m->mdt_opts.mo_mds_capa,
2211 m->mdt_capa_timeout,
2217 * Invoke handler for this request opc. Also do necessary preprocessing
2218 * (according to handler ->mh_flags), and post-processing (setting of
2219 * ->last_{xid,committed}).
2221 static int mdt_req_handle(struct mdt_thread_info *info,
2222 struct mdt_handler *h, struct ptlrpc_request *req)
2224 int rc, serious = 0;
2229 LASSERT(h->mh_act != NULL);
2230 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2231 LASSERT(current->journal_info == NULL);
2234 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2235 * to put same checks into handlers like mdt_close(), mdt_reint(),
2236 * etc., without talking to mdt authors first. Checking same thing
2237 * there again is useless and returning 0 error wihtout packing reply
2238 * is buggy! Handlers either pack reply or return error.
2240 * We return 0 here and do not send any reply in order to emulate
2241 * network failure. Do not send any reply in case any of NET related
2242 * fail_id has occured.
2244 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2248 flags = h->mh_flags;
2249 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2251 if (h->mh_fmt != NULL) {
2252 req_capsule_set(info->mti_pill, h->mh_fmt);
2253 rc = mdt_unpack_req_pack_rep(info, flags);
2256 if (rc == 0 && flags & MUTABOR &&
2257 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2258 /* should it be rq_status? */
2261 if (rc == 0 && flags & HABEO_CLAVIS) {
2262 struct ldlm_request *dlm_req;
2264 LASSERT(h->mh_fmt != NULL);
2266 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2267 if (dlm_req != NULL) {
2268 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2269 rc = mdt_lock_resname_compat(info->mti_mdt,
2271 info->mti_dlm_req = dlm_req;
2277 /* capability setting changed via /proc, needs reinitialize ctxt */
2278 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2279 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2280 info->mti_mdt->mdt_capa_conf = 0;
2283 if (likely(rc == 0)) {
2285 * Process request, there can be two types of rc:
2286 * 1) errors with msg unpack/pack, other failures outside the
2287 * operation itself. This is counted as serious errors;
2288 * 2) errors during fs operation, should be placed in rq_status
2291 rc = h->mh_act(info);
2293 !req->rq_no_reply && req->rq_reply_state == NULL) {
2294 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2295 "pack reply and returned 0 error\n",
2299 serious = is_serious(rc);
2300 rc = clear_serious(rc);
2304 req->rq_status = rc;
2307 * ELDLM_* codes which > 0 should be in rq_status only as well as
2308 * all non-serious errors.
2310 if (rc > 0 || !serious)
2313 LASSERT(current->journal_info == NULL);
2315 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2316 info->mti_mdt->mdt_opts.mo_compat_resname) {
2317 struct ldlm_reply *dlmrep;
2319 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2321 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2324 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2325 if (likely(rc == 0 && h->mh_opc != MDS_DISCONNECT))
2326 target_committed_to_req(req);
2328 if (unlikely((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
2329 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2330 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2334 target_send_reply(req, rc, info->mti_fail_id);
2338 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2340 lh->mlh_type = MDT_NUL_LOCK;
2341 lh->mlh_reg_lh.cookie = 0ull;
2342 lh->mlh_reg_mode = LCK_MINMODE;
2343 lh->mlh_pdo_lh.cookie = 0ull;
2344 lh->mlh_pdo_mode = LCK_MINMODE;
2347 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2349 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2350 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2354 * Initialize fields of struct mdt_thread_info. Other fields are left in
2355 * uninitialized state, because it's too expensive to zero out whole
2356 * mdt_thread_info (> 1K) on each request arrival.
2358 static void mdt_thread_info_init(struct ptlrpc_request *req,
2359 struct mdt_thread_info *info)
2362 struct md_capainfo *ci;
2364 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2365 info->mti_pill = &req->rq_pill;
2368 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2369 mdt_lock_handle_init(&info->mti_lh[i]);
2371 /* mdt device: it can be NULL while CONNECT */
2372 if (req->rq_export) {
2373 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2374 info->mti_exp = req->rq_export;
2376 info->mti_mdt = NULL;
2377 info->mti_env = req->rq_svc_thread->t_env;
2378 ci = md_capainfo(info->mti_env);
2379 memset(ci, 0, sizeof *ci);
2381 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2382 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2384 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2385 info->mti_body = NULL;
2386 info->mti_object = NULL;
2387 info->mti_dlm_req = NULL;
2388 info->mti_has_trans = 0;
2389 info->mti_no_need_trans = 0;
2390 info->mti_cross_ref = 0;
2391 info->mti_opdata = 0;
2393 /* To not check for split by default. */
2394 info->mti_spec.sp_ck_split = 0;
2397 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2401 req_capsule_fini(info->mti_pill);
2402 if (info->mti_object != NULL) {
2403 mdt_object_put(info->mti_env, info->mti_object);
2404 info->mti_object = NULL;
2406 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2407 mdt_lock_handle_fini(&info->mti_lh[i]);
2408 info->mti_env = NULL;
2411 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2412 struct obd_device *obd, int *process)
2414 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2415 case MDS_CONNECT: /* This will never get here, but for completeness. */
2416 case OST_CONNECT: /* This will never get here, but for completeness. */
2417 case MDS_DISCONNECT:
2418 case OST_DISCONNECT:
2423 case MDS_DONE_WRITING:
2424 case MDS_SYNC: /* used in unmounting */
2430 *process = target_queue_recovery_request(req, obd);
2434 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2441 * Handle recovery. Return:
2442 * +1: continue request processing;
2443 * -ve: abort immediately with the given error code;
2444 * 0: send reply with error code in req->rq_status;
2446 static int mdt_recovery(struct mdt_thread_info *info)
2448 struct ptlrpc_request *req = mdt_info_req(info);
2450 struct obd_device *obd;
2454 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2457 case SEC_CTX_INIT_CONT:
2463 rc = mdt_handle_idmap(info);
2472 if (unlikely(req->rq_export == NULL)) {
2473 CERROR("operation %d on unconnected MDS from %s\n",
2474 lustre_msg_get_opc(req->rq_reqmsg),
2475 libcfs_id2str(req->rq_peer));
2476 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2477 * mds_A will get -ENOTCONN(especially for ping req),
2478 * which will cause that mds_A deactive timeout, then when
2479 * mds_A cleanup, the cleanup process will be suspended since
2480 * deactive timeout is not zero.
2482 req->rq_status = -ENOTCONN;
2483 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2487 /* sanity check: if the xid matches, the request must be marked as a
2488 * resent or replayed */
2489 if (req_xid_is_last(req)) {
2490 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2491 (MSG_RESENT | MSG_REPLAY))) {
2492 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2493 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2494 lustre_msg_get_flags(req->rq_reqmsg));
2496 req->rq_status = -ENOTCONN;
2501 /* else: note the opposite is not always true; a RESENT req after a
2502 * failover will usually not match the last_xid, since it was likely
2503 * never committed. A REPLAYed request will almost never match the
2504 * last xid, however it could for a committed, but still retained,
2507 obd = req->rq_export->exp_obd;
2509 /* Check for aborted recovery... */
2510 spin_lock_bh(&obd->obd_processing_task_lock);
2511 recovering = obd->obd_recovering;
2512 spin_unlock_bh(&obd->obd_processing_task_lock);
2513 if (unlikely(recovering)) {
2516 DEBUG_REQ(D_INFO, req, "Got new replay");
2517 rc = mdt_filter_recovery_request(req, obd, &should_process);
2518 if (rc != 0 || !should_process)
2520 else if (should_process < 0) {
2521 req->rq_status = should_process;
2522 rc = ptlrpc_error(req);
2529 static int mdt_msg_check_version(struct lustre_msg *msg)
2533 switch (lustre_msg_get_opc(msg)) {
2535 case MDS_DISCONNECT:
2538 case SEC_CTX_INIT_CONT:
2540 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2542 CERROR("bad opc %u version %08x, expecting %08x\n",
2543 lustre_msg_get_opc(msg),
2544 lustre_msg_get_version(msg),
2545 LUSTRE_OBD_VERSION);
2549 case MDS_GETATTR_NAME:
2556 case MDS_DONE_WRITING:
2562 case MDS_QUOTACHECK:
2568 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2570 CERROR("bad opc %u version %08x, expecting %08x\n",
2571 lustre_msg_get_opc(msg),
2572 lustre_msg_get_version(msg),
2573 LUSTRE_MDS_VERSION);
2577 case LDLM_BL_CALLBACK:
2578 case LDLM_CP_CALLBACK:
2579 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2581 CERROR("bad opc %u version %08x, expecting %08x\n",
2582 lustre_msg_get_opc(msg),
2583 lustre_msg_get_version(msg),
2584 LUSTRE_DLM_VERSION);
2586 case OBD_LOG_CANCEL:
2587 case LLOG_ORIGIN_HANDLE_CREATE:
2588 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2589 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2590 case LLOG_ORIGIN_HANDLE_CLOSE:
2591 case LLOG_ORIGIN_HANDLE_DESTROY:
2592 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2594 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2596 CERROR("bad opc %u version %08x, expecting %08x\n",
2597 lustre_msg_get_opc(msg),
2598 lustre_msg_get_version(msg),
2599 LUSTRE_LOG_VERSION);
2602 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2608 static int mdt_handle0(struct ptlrpc_request *req,
2609 struct mdt_thread_info *info,
2610 struct mdt_opc_slice *supported)
2612 struct mdt_handler *h;
2613 struct lustre_msg *msg;
2618 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2621 LASSERT(current->journal_info == NULL);
2623 msg = req->rq_reqmsg;
2624 rc = mdt_msg_check_version(msg);
2625 if (likely(rc == 0)) {
2626 rc = mdt_recovery(info);
2627 if (likely(rc == +1)) {
2628 h = mdt_handler_find(lustre_msg_get_opc(msg),
2630 if (likely(h != NULL)) {
2631 rc = mdt_req_handle(info, h, req);
2633 CERROR("The unsupported opc: 0x%x\n", lustre_msg_get_opc(msg) );
2634 req->rq_status = -ENOTSUPP;
2635 rc = ptlrpc_error(req);
2640 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2645 * MDT handler function called by ptlrpc service thread when request comes.
2647 * XXX common "target" functionality should be factored into separate module
2648 * shared by mdt, ost and stand-alone services like fld.
2650 static int mdt_handle_common(struct ptlrpc_request *req,
2651 struct mdt_opc_slice *supported)
2654 struct mdt_thread_info *info;
2658 env = req->rq_svc_thread->t_env;
2659 LASSERT(env != NULL);
2660 LASSERT(env->le_ses != NULL);
2661 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2662 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2663 LASSERT(info != NULL);
2665 mdt_thread_info_init(req, info);
2667 rc = mdt_handle0(req, info, supported);
2669 mdt_thread_info_fini(info);
2674 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
2677 int mdt_recovery_handle(struct ptlrpc_request *req)
2682 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2684 rc = mdt_handle_common(req, mdt_fld_handlers);
2687 rc = mdt_handle_common(req, mdt_seq_handlers);
2690 rc = mdt_handle_common(req, mdt_regular_handlers);
2697 static int mdt_regular_handle(struct ptlrpc_request *req)
2699 return mdt_handle_common(req, mdt_regular_handlers);
2702 static int mdt_readpage_handle(struct ptlrpc_request *req)
2704 return mdt_handle_common(req, mdt_readpage_handlers);
2707 static int mdt_xmds_handle(struct ptlrpc_request *req)
2709 return mdt_handle_common(req, mdt_xmds_handlers);
2712 static int mdt_mdsc_handle(struct ptlrpc_request *req)
2714 return mdt_handle_common(req, mdt_seq_handlers);
2717 static int mdt_mdss_handle(struct ptlrpc_request *req)
2719 return mdt_handle_common(req, mdt_seq_handlers);
2722 static int mdt_dtss_handle(struct ptlrpc_request *req)
2724 return mdt_handle_common(req, mdt_seq_handlers);
2727 static int mdt_fld_handle(struct ptlrpc_request *req)
2729 return mdt_handle_common(req, mdt_fld_handlers);
2745 static int mdt_intent_getattr(enum mdt_it_code opcode,
2746 struct mdt_thread_info *info,
2747 struct ldlm_lock **,
2749 static int mdt_intent_reint(enum mdt_it_code opcode,
2750 struct mdt_thread_info *info,
2751 struct ldlm_lock **,
2754 static struct mdt_it_flavor {
2755 const struct req_format *it_fmt;
2757 int (*it_act)(enum mdt_it_code ,
2758 struct mdt_thread_info *,
2759 struct ldlm_lock **,
2762 } mdt_it_flavor[] = {
2764 .it_fmt = &RQF_LDLM_INTENT,
2765 /*.it_flags = HABEO_REFERO,*/
2767 .it_act = mdt_intent_reint,
2768 .it_reint = REINT_OPEN
2771 .it_fmt = &RQF_LDLM_INTENT,
2772 .it_flags = MUTABOR,
2773 .it_act = mdt_intent_reint,
2774 .it_reint = REINT_OPEN
2777 .it_fmt = &RQF_LDLM_INTENT,
2778 .it_flags = MUTABOR,
2779 .it_act = mdt_intent_reint,
2780 .it_reint = REINT_CREATE
2782 [MDT_IT_GETATTR] = {
2783 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2784 .it_flags = HABEO_REFERO,
2785 .it_act = mdt_intent_getattr
2787 [MDT_IT_READDIR] = {
2793 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2794 .it_flags = HABEO_REFERO,
2795 .it_act = mdt_intent_getattr
2798 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2799 .it_flags = MUTABOR,
2801 .it_reint = REINT_UNLINK
2805 .it_flags = MUTABOR,
2808 [MDT_IT_GETXATTR] = {
2815 int mdt_intent_lock_replace(struct mdt_thread_info *info,
2816 struct ldlm_lock **lockp,
2817 struct ldlm_lock *new_lock,
2818 struct mdt_lock_handle *lh,
2821 struct ptlrpc_request *req = mdt_info_req(info);
2822 struct ldlm_lock *lock = *lockp;
2825 * Get new lock only for cases when possible resent did not find any
2828 if (new_lock == NULL)
2829 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
2831 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2832 lh->mlh_reg_lh.cookie = 0;
2836 LASSERTF(new_lock != NULL,
2837 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2840 * If we've already given this lock to a client once, then we should
2841 * have no readers or writers. Otherwise, we should have one reader
2842 * _or_ writer ref (which will be zeroed below) before returning the
2845 if (new_lock->l_export == req->rq_export) {
2846 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2848 LASSERT(new_lock->l_export == NULL);
2849 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2854 if (new_lock->l_export == req->rq_export) {
2856 * Already gave this to the client, which means that we
2857 * reconstructed a reply.
2859 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2861 lh->mlh_reg_lh.cookie = 0;
2862 RETURN(ELDLM_LOCK_REPLACED);
2866 * Fixup the lock to be given to the client.
2868 lock_res_and_lock(new_lock);
2869 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
2870 * possible blocking AST. */
2871 while (new_lock->l_readers > 0) {
2872 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
2873 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2874 new_lock->l_readers--;
2876 while (new_lock->l_writers > 0) {
2877 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
2878 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2879 new_lock->l_writers--;
2882 new_lock->l_export = class_export_get(req->rq_export);
2883 new_lock->l_blocking_ast = lock->l_blocking_ast;
2884 new_lock->l_completion_ast = lock->l_completion_ast;
2885 new_lock->l_remote_handle = lock->l_remote_handle;
2886 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2888 lustre_hash_add(new_lock->l_export->exp_lock_hash,
2889 &new_lock->l_remote_handle,
2890 &new_lock->l_exp_hash);
2892 unlock_res_and_lock(new_lock);
2893 LDLM_LOCK_RELEASE(new_lock);
2894 lh->mlh_reg_lh.cookie = 0;
2896 RETURN(ELDLM_LOCK_REPLACED);
2899 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
2900 struct ldlm_lock *new_lock,
2901 struct ldlm_lock **old_lock,
2902 struct mdt_lock_handle *lh)
2904 struct ptlrpc_request *req = mdt_info_req(info);
2905 struct obd_export *exp = req->rq_export;
2906 struct lustre_handle remote_hdl;
2907 struct ldlm_request *dlmreq;
2908 struct ldlm_lock *lock;
2910 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2913 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2914 remote_hdl = dlmreq->lock_handle[0];
2916 lock = lustre_hash_lookup(exp->exp_lock_hash, &remote_hdl);
2918 if (lock != new_lock) {
2919 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
2920 lh->mlh_reg_mode = lock->l_granted_mode;
2922 LDLM_DEBUG(lock, "Restoring lock cookie");
2923 DEBUG_REQ(D_DLMTRACE, req,
2924 "restoring lock cookie "LPX64,
2925 lh->mlh_reg_lh.cookie);
2927 *old_lock = LDLM_LOCK_GET(lock);
2928 lh_put(exp->exp_lock_hash, &lock->l_exp_hash);
2932 lh_put(exp->exp_lock_hash, &lock->l_exp_hash);
2936 * If the xid matches, then we know this is a resent request, and allow
2937 * it. (It's probably an OPEN, for which we don't send a lock.
2939 if (req_xid_is_last(req))
2943 * This remote handle isn't enqueued, so we never received or processed
2944 * this request. Clear MSG_RESENT, because it can be handled like any
2945 * normal request now.
2947 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2949 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
2953 static int mdt_intent_getattr(enum mdt_it_code opcode,
2954 struct mdt_thread_info *info,
2955 struct ldlm_lock **lockp,
2958 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
2959 struct ldlm_lock *new_lock = NULL;
2961 struct ldlm_reply *ldlm_rep;
2962 struct ptlrpc_request *req;
2963 struct mdt_body *reqbody;
2964 struct mdt_body *repbody;
2968 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2971 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2974 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
2975 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
2976 repbody->eadatasize = 0;
2977 repbody->aclsize = 0;
2981 child_bits = MDS_INODELOCK_LOOKUP;
2983 case MDT_IT_GETATTR:
2984 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
2987 CERROR("Unhandled till now");
2988 GOTO(out_shrink, rc = -EINVAL);
2991 rc = mdt_init_ucred(info, reqbody);
2993 GOTO(out_shrink, rc);
2995 req = info->mti_pill->rc_req;
2996 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2997 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
2999 /* Get lock from request for possible resent case. */
3000 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3002 ldlm_rep->lock_policy_res2 =
3003 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3005 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3006 ldlm_rep->lock_policy_res2 = 0;
3007 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3008 ldlm_rep->lock_policy_res2) {
3009 lhc->mlh_reg_lh.cookie = 0ull;
3010 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3013 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3016 mdt_exit_ucred(info);
3018 mdt_shrink_reply(info);
3022 static int mdt_intent_reint(enum mdt_it_code opcode,
3023 struct mdt_thread_info *info,
3024 struct ldlm_lock **lockp,
3027 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3028 struct ldlm_reply *rep = NULL;
3032 static const struct req_format *intent_fmts[REINT_MAX] = {
3033 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3034 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3039 opc = mdt_reint_opcode(info, intent_fmts);
3043 if (mdt_it_flavor[opcode].it_reint != opc) {
3044 CERROR("Reint code %ld doesn't match intent: %d\n",
3046 RETURN(err_serious(-EPROTO));
3049 /* Get lock from request for possible resent case. */
3050 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3052 rc = mdt_reint_internal(info, lhc, opc);
3054 /* Check whether the reply has been packed successfully. */
3055 if (mdt_info_req(info)->rq_repmsg != NULL)
3056 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3058 RETURN(err_serious(-EFAULT));
3060 /* MDC expects this in any case */
3062 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3064 /* Cross-ref case, the lock should be returned to the client */
3065 if (rc == -EREMOTE) {
3066 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3067 rep->lock_policy_res2 = 0;
3068 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3071 rep->lock_policy_res2 = clear_serious(rc);
3073 lhc->mlh_reg_lh.cookie = 0ull;
3074 if (rc == -ENOTCONN || rc == -ENODEV) {
3076 * If it is the disconnect error (ENODEV & ENOCONN), the error
3077 * will be returned by rq_status, and client at ptlrpc layer
3078 * will detect this, then disconnect, reconnect the import
3079 * immediately, instead of impacting the following the rpc.
3084 * For other cases, the error will be returned by intent.
3085 * and client will retrieve the result from intent.
3088 * FIXME: when open lock is finished, that should be
3091 RETURN(ELDLM_LOCK_ABORTED);
3095 static int mdt_intent_code(long itcode)
3103 case IT_OPEN|IT_CREAT:
3110 rc = MDT_IT_READDIR;
3113 rc = MDT_IT_GETATTR;
3125 rc = MDT_IT_GETXATTR;
3128 CERROR("Unknown intent opcode: %ld\n", itcode);
3135 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3136 struct ldlm_lock **lockp, int flags)
3138 struct req_capsule *pill;
3139 struct mdt_it_flavor *flv;
3144 opc = mdt_intent_code(itopc);
3148 pill = info->mti_pill;
3149 flv = &mdt_it_flavor[opc];
3151 if (flv->it_fmt != NULL)
3152 req_capsule_extend(pill, flv->it_fmt);
3154 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3156 struct ptlrpc_request *req = mdt_info_req(info);
3157 if (flv->it_flags & MUTABOR &&
3158 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
3161 if (rc == 0 && flv->it_act != NULL) {
3162 /* execute policy */
3163 rc = flv->it_act(opc, info, lockp, flags);
3170 static int mdt_intent_policy(struct ldlm_namespace *ns,
3171 struct ldlm_lock **lockp, void *req_cookie,
3172 ldlm_mode_t mode, int flags, void *data)
3174 struct mdt_thread_info *info;
3175 struct ptlrpc_request *req = req_cookie;
3176 struct ldlm_intent *it;
3177 struct req_capsule *pill;
3182 LASSERT(req != NULL);
3184 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3186 LASSERT(info != NULL);
3187 pill = info->mti_pill;
3188 LASSERT(pill->rc_req == req);
3190 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3191 req_capsule_extend(pill, &RQF_LDLM_INTENT);
3192 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3194 const struct ldlm_request *dlmreq;
3197 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3202 * Lock without inodebits makes no sense and will oops
3203 * later in ldlm. Let's check it now to see if we have
3204 * wrong lock from client or bits get corrupted
3205 * somewhere in mdt_intent_opc().
3207 dlmreq = info->mti_dlm_req;
3208 req_bits = dlmreq->lock_desc.l_policy_data.l_inodebits.bits;
3209 LASSERT(req_bits != 0);
3212 rc = err_serious(-EFAULT);
3214 /* No intent was provided */
3215 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3216 rc = req_capsule_server_pack(pill);
3218 rc = err_serious(rc);
3226 static void mdt_seq_adjust(const struct lu_env *env,
3227 struct mdt_device *m, int lost)
3229 struct md_site *ms = mdt_md_site(m);
3230 struct lu_range out;
3233 LASSERT(ms && ms->ms_server_seq);
3235 /* get extra seq from seq_server, moving it's range up */
3236 while (lost-- > 0) {
3237 seq_server_alloc_meta(ms->ms_server_seq, NULL, &out, env);
3242 static int mdt_seq_fini(const struct lu_env *env,
3243 struct mdt_device *m)
3245 struct md_site *ms = mdt_md_site(m);
3249 if (ms->ms_server_seq) {
3250 seq_server_fini(ms->ms_server_seq, env);
3251 OBD_FREE_PTR(ms->ms_server_seq);
3252 ms->ms_server_seq = NULL;
3255 if (ms->ms_control_seq) {
3256 seq_server_fini(ms->ms_control_seq, env);
3257 OBD_FREE_PTR(ms->ms_control_seq);
3258 ms->ms_control_seq = NULL;
3261 if (ms->ms_client_seq) {
3262 seq_client_fini(ms->ms_client_seq);
3263 OBD_FREE_PTR(ms->ms_client_seq);
3264 ms->ms_client_seq = NULL;
3271 static int mdt_seq_init(const struct lu_env *env,
3273 struct mdt_device *m)
3280 ms = mdt_md_site(m);
3283 * This is sequence-controller node. Init seq-controller server on local
3286 if (ms->ms_node_id == 0) {
3287 LASSERT(ms->ms_control_seq == NULL);
3289 OBD_ALLOC_PTR(ms->ms_control_seq);
3290 if (ms->ms_control_seq == NULL)
3293 rc = seq_server_init(ms->ms_control_seq,
3294 m->mdt_bottom, uuid,
3295 LUSTRE_SEQ_CONTROLLER,
3299 GOTO(out_seq_fini, rc);
3301 OBD_ALLOC_PTR(ms->ms_client_seq);
3302 if (ms->ms_client_seq == NULL)
3303 GOTO(out_seq_fini, rc = -ENOMEM);
3305 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3306 if (prefix == NULL) {
3307 OBD_FREE_PTR(ms->ms_client_seq);
3308 GOTO(out_seq_fini, rc = -ENOMEM);
3311 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3315 * Init seq-controller client after seq-controller server is
3316 * ready. Pass ms->ms_control_seq to it for direct talking.
3318 rc = seq_client_init(ms->ms_client_seq, NULL,
3319 LUSTRE_SEQ_METADATA, prefix,
3320 ms->ms_control_seq);
3321 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3324 GOTO(out_seq_fini, rc);
3327 /* Init seq-server on local MDT */
3328 LASSERT(ms->ms_server_seq == NULL);
3330 OBD_ALLOC_PTR(ms->ms_server_seq);
3331 if (ms->ms_server_seq == NULL)
3332 GOTO(out_seq_fini, rc = -ENOMEM);
3334 rc = seq_server_init(ms->ms_server_seq,
3335 m->mdt_bottom, uuid,
3339 GOTO(out_seq_fini, rc = -ENOMEM);
3341 /* Assign seq-controller client to local seq-server. */
3342 if (ms->ms_node_id == 0) {
3343 LASSERT(ms->ms_client_seq != NULL);
3345 rc = seq_server_set_cli(ms->ms_server_seq,
3353 mdt_seq_fini(env, m);
3358 * Init client sequence manager which is used by local MDS to talk to sequence
3359 * controller on remote node.
3361 static int mdt_seq_init_cli(const struct lu_env *env,
3362 struct mdt_device *m,
3363 struct lustre_cfg *cfg)
3365 struct md_site *ms = mdt_md_site(m);
3366 struct obd_device *mdc;
3367 struct obd_uuid *uuidp, *mdcuuidp;
3368 char *uuid_str, *mdc_uuid_str;
3371 struct mdt_thread_info *info;
3372 char *p, *index_string = lustre_cfg_string(cfg, 2);
3375 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3376 uuidp = &info->mti_u.uuid[0];
3377 mdcuuidp = &info->mti_u.uuid[1];
3379 LASSERT(index_string);
3381 index = simple_strtol(index_string, &p, 10);
3383 CERROR("Invalid index in lustre_cgf, offset 2\n");
3387 /* check if this is adding the first MDC and controller is not yet
3389 if (index != 0 || ms->ms_client_seq)
3392 uuid_str = lustre_cfg_string(cfg, 1);
3393 mdc_uuid_str = lustre_cfg_string(cfg, 4);
3394 obd_str2uuid(uuidp, uuid_str);
3395 obd_str2uuid(mdcuuidp, mdc_uuid_str);
3397 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
3399 CERROR("can't find controller MDC by uuid %s\n",
3402 } else if (!mdc->obd_set_up) {
3403 CERROR("target %s not set up\n", mdc->obd_name);
3406 LASSERT(ms->ms_control_exp);
3407 OBD_ALLOC_PTR(ms->ms_client_seq);
3408 if (ms->ms_client_seq != NULL) {
3411 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3415 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3418 rc = seq_client_init(ms->ms_client_seq,
3420 LUSTRE_SEQ_METADATA,
3422 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3429 LASSERT(ms->ms_server_seq != NULL);
3430 rc = seq_server_set_cli(ms->ms_server_seq, ms->ms_client_seq,
3437 static void mdt_seq_fini_cli(struct mdt_device *m)
3443 ms = mdt_md_site(m);
3446 if (ms->ms_server_seq)
3447 seq_server_set_cli(ms->ms_server_seq,
3450 if (ms->ms_control_exp) {
3451 class_export_put(ms->ms_control_exp);
3452 ms->ms_control_exp = NULL;
3461 static int mdt_fld_fini(const struct lu_env *env,
3462 struct mdt_device *m)
3464 struct md_site *ms = mdt_md_site(m);
3467 if (ms && ms->ms_server_fld) {
3468 fld_server_fini(ms->ms_server_fld, env);
3469 OBD_FREE_PTR(ms->ms_server_fld);
3470 ms->ms_server_fld = NULL;
3476 static int mdt_fld_init(const struct lu_env *env,
3478 struct mdt_device *m)
3484 ms = mdt_md_site(m);
3486 OBD_ALLOC_PTR(ms->ms_server_fld);
3487 if (ms->ms_server_fld == NULL)
3488 RETURN(rc = -ENOMEM);
3490 rc = fld_server_init(ms->ms_server_fld,
3491 m->mdt_bottom, uuid, env);
3493 OBD_FREE_PTR(ms->ms_server_fld);
3494 ms->ms_server_fld = NULL;
3501 /* device init/fini methods */
3502 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
3505 if (m->mdt_regular_service != NULL) {
3506 ptlrpc_unregister_service(m->mdt_regular_service);
3507 m->mdt_regular_service = NULL;
3509 if (m->mdt_readpage_service != NULL) {
3510 ptlrpc_unregister_service(m->mdt_readpage_service);
3511 m->mdt_readpage_service = NULL;
3513 if (m->mdt_xmds_service != NULL) {
3514 ptlrpc_unregister_service(m->mdt_xmds_service);
3515 m->mdt_xmds_service = NULL;
3517 if (m->mdt_setattr_service != NULL) {
3518 ptlrpc_unregister_service(m->mdt_setattr_service);
3519 m->mdt_setattr_service = NULL;
3521 if (m->mdt_mdsc_service != NULL) {
3522 ptlrpc_unregister_service(m->mdt_mdsc_service);
3523 m->mdt_mdsc_service = NULL;
3525 if (m->mdt_mdss_service != NULL) {
3526 ptlrpc_unregister_service(m->mdt_mdss_service);
3527 m->mdt_mdss_service = NULL;
3529 if (m->mdt_dtss_service != NULL) {
3530 ptlrpc_unregister_service(m->mdt_dtss_service);
3531 m->mdt_dtss_service = NULL;
3533 if (m->mdt_fld_service != NULL) {
3534 ptlrpc_unregister_service(m->mdt_fld_service);
3535 m->mdt_fld_service = NULL;
3540 static int mdt_start_ptlrpc_service(struct mdt_device *m)
3543 static struct ptlrpc_service_conf conf;
3544 cfs_proc_dir_entry_t *procfs_entry;
3547 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
3549 conf = (typeof(conf)) {
3550 .psc_nbufs = MDS_NBUFS,
3551 .psc_bufsize = MDS_BUFSIZE,
3552 .psc_max_req_size = MDS_MAXREQSIZE,
3553 .psc_max_reply_size = MDS_MAXREPSIZE,
3554 .psc_req_portal = MDS_REQUEST_PORTAL,
3555 .psc_rep_portal = MDC_REPLY_PORTAL,
3556 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3558 * We'd like to have a mechanism to set this on a per-device
3559 * basis, but alas...
3561 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3563 .psc_max_threads = MDT_MAX_THREADS,
3564 .psc_ctx_tags = LCT_MD_THREAD
3567 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
3568 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3569 "mdt_ldlm_client", m->mdt_ldlm_client);
3571 m->mdt_regular_service =
3572 ptlrpc_init_svc_conf(&conf, mdt_regular_handle, LUSTRE_MDT_NAME,
3573 procfs_entry, target_print_req,
3575 if (m->mdt_regular_service == NULL)
3578 rc = ptlrpc_start_threads(NULL, m->mdt_regular_service);
3580 GOTO(err_mdt_svc, rc);
3583 * readpage service configuration. Parameters have to be adjusted,
3586 conf = (typeof(conf)) {
3587 .psc_nbufs = MDS_NBUFS,
3588 .psc_bufsize = MDS_BUFSIZE,
3589 .psc_max_req_size = MDS_MAXREQSIZE,
3590 .psc_max_reply_size = MDS_MAXREPSIZE,
3591 .psc_req_portal = MDS_READPAGE_PORTAL,
3592 .psc_rep_portal = MDC_REPLY_PORTAL,
3593 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3594 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3596 .psc_max_threads = MDT_MAX_THREADS,
3597 .psc_ctx_tags = LCT_MD_THREAD
3599 m->mdt_readpage_service =
3600 ptlrpc_init_svc_conf(&conf, mdt_readpage_handle,
3601 LUSTRE_MDT_NAME "_readpage",
3602 procfs_entry, target_print_req,"mdt_rdpg");
3604 if (m->mdt_readpage_service == NULL) {
3605 CERROR("failed to start readpage service\n");
3606 GOTO(err_mdt_svc, rc = -ENOMEM);
3609 rc = ptlrpc_start_threads(NULL, m->mdt_readpage_service);
3612 * setattr service configuration.
3614 conf = (typeof(conf)) {
3615 .psc_nbufs = MDS_NBUFS,
3616 .psc_bufsize = MDS_BUFSIZE,
3617 .psc_max_req_size = MDS_MAXREQSIZE,
3618 .psc_max_reply_size = MDS_MAXREPSIZE,
3619 .psc_req_portal = MDS_SETATTR_PORTAL,
3620 .psc_rep_portal = MDC_REPLY_PORTAL,
3621 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3622 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3624 .psc_max_threads = MDT_MAX_THREADS,
3625 .psc_ctx_tags = LCT_MD_THREAD
3628 m->mdt_setattr_service =
3629 ptlrpc_init_svc_conf(&conf, mdt_regular_handle,
3630 LUSTRE_MDT_NAME "_setattr",
3631 procfs_entry, target_print_req,"mdt_attr");
3633 if (!m->mdt_setattr_service) {
3634 CERROR("failed to start setattr service\n");
3635 GOTO(err_mdt_svc, rc = -ENOMEM);
3638 rc = ptlrpc_start_threads(NULL, m->mdt_setattr_service);
3640 GOTO(err_mdt_svc, rc);
3643 * sequence controller service configuration
3645 conf = (typeof(conf)) {
3646 .psc_nbufs = MDS_NBUFS,
3647 .psc_bufsize = MDS_BUFSIZE,
3648 .psc_max_req_size = SEQ_MAXREQSIZE,
3649 .psc_max_reply_size = SEQ_MAXREPSIZE,
3650 .psc_req_portal = SEQ_CONTROLLER_PORTAL,
3651 .psc_rep_portal = MDC_REPLY_PORTAL,
3652 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3653 .psc_min_threads = SEQ_NUM_THREADS,
3654 .psc_max_threads = SEQ_NUM_THREADS,
3655 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3658 m->mdt_mdsc_service =
3659 ptlrpc_init_svc_conf(&conf, mdt_mdsc_handle,
3660 LUSTRE_MDT_NAME"_mdsc",
3661 procfs_entry, target_print_req,"mdt_mdsc");
3662 if (!m->mdt_mdsc_service) {
3663 CERROR("failed to start seq controller service\n");
3664 GOTO(err_mdt_svc, rc = -ENOMEM);
3667 rc = ptlrpc_start_threads(NULL, m->mdt_mdsc_service);
3669 GOTO(err_mdt_svc, rc);
3672 * metadata sequence server service configuration
3674 conf = (typeof(conf)) {
3675 .psc_nbufs = MDS_NBUFS,
3676 .psc_bufsize = MDS_BUFSIZE,
3677 .psc_max_req_size = SEQ_MAXREQSIZE,
3678 .psc_max_reply_size = SEQ_MAXREPSIZE,
3679 .psc_req_portal = SEQ_METADATA_PORTAL,
3680 .psc_rep_portal = MDC_REPLY_PORTAL,
3681 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3682 .psc_min_threads = SEQ_NUM_THREADS,
3683 .psc_max_threads = SEQ_NUM_THREADS,
3684 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3687 m->mdt_mdss_service =
3688 ptlrpc_init_svc_conf(&conf, mdt_mdss_handle,
3689 LUSTRE_MDT_NAME"_mdss",
3690 procfs_entry, target_print_req,"mdt_mdss");
3691 if (!m->mdt_mdss_service) {
3692 CERROR("failed to start metadata seq server service\n");
3693 GOTO(err_mdt_svc, rc = -ENOMEM);
3696 rc = ptlrpc_start_threads(NULL, m->mdt_mdss_service);
3698 GOTO(err_mdt_svc, rc);
3702 * Data sequence server service configuration. We want to have really
3703 * cluster-wide sequences space. This is why we start only one sequence
3704 * controller which manages space.
3706 conf = (typeof(conf)) {
3707 .psc_nbufs = MDS_NBUFS,
3708 .psc_bufsize = MDS_BUFSIZE,
3709 .psc_max_req_size = SEQ_MAXREQSIZE,
3710 .psc_max_reply_size = SEQ_MAXREPSIZE,
3711 .psc_req_portal = SEQ_DATA_PORTAL,
3712 .psc_rep_portal = OSC_REPLY_PORTAL,
3713 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3714 .psc_min_threads = SEQ_NUM_THREADS,
3715 .psc_max_threads = SEQ_NUM_THREADS,
3716 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3719 m->mdt_dtss_service =
3720 ptlrpc_init_svc_conf(&conf, mdt_dtss_handle,
3721 LUSTRE_MDT_NAME"_dtss",
3722 procfs_entry, target_print_req,"mdt_dtss");
3723 if (!m->mdt_dtss_service) {
3724 CERROR("failed to start data seq server service\n");
3725 GOTO(err_mdt_svc, rc = -ENOMEM);
3728 rc = ptlrpc_start_threads(NULL, m->mdt_dtss_service);
3730 GOTO(err_mdt_svc, rc);
3732 /* FLD service start */
3733 conf = (typeof(conf)) {
3734 .psc_nbufs = MDS_NBUFS,
3735 .psc_bufsize = MDS_BUFSIZE,
3736 .psc_max_req_size = FLD_MAXREQSIZE,
3737 .psc_max_reply_size = FLD_MAXREPSIZE,
3738 .psc_req_portal = FLD_REQUEST_PORTAL,
3739 .psc_rep_portal = MDC_REPLY_PORTAL,
3740 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3741 .psc_min_threads = FLD_NUM_THREADS,
3742 .psc_max_threads = FLD_NUM_THREADS,
3743 .psc_ctx_tags = LCT_DT_THREAD|LCT_MD_THREAD
3746 m->mdt_fld_service =
3747 ptlrpc_init_svc_conf(&conf, mdt_fld_handle,
3748 LUSTRE_MDT_NAME"_fld",
3749 procfs_entry, target_print_req, "mdt_fld");
3750 if (!m->mdt_fld_service) {
3751 CERROR("failed to start fld service\n");
3752 GOTO(err_mdt_svc, rc = -ENOMEM);
3755 rc = ptlrpc_start_threads(NULL, m->mdt_fld_service);
3757 GOTO(err_mdt_svc, rc);
3760 * mds-mds service configuration. Separate portal is used to allow
3761 * mds-mds requests be not blocked during recovery.
3763 conf = (typeof(conf)) {
3764 .psc_nbufs = MDS_NBUFS,
3765 .psc_bufsize = MDS_BUFSIZE,
3766 .psc_max_req_size = MDS_MAXREQSIZE,
3767 .psc_max_reply_size = MDS_MAXREPSIZE,
3768 .psc_req_portal = MDS_MDS_PORTAL,
3769 .psc_rep_portal = MDC_REPLY_PORTAL,
3770 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3771 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3773 .psc_max_threads = MDT_MAX_THREADS,
3774 .psc_ctx_tags = LCT_MD_THREAD
3776 m->mdt_xmds_service =
3777 ptlrpc_init_svc_conf(&conf, mdt_xmds_handle,
3778 LUSTRE_MDT_NAME "_mds",
3779 procfs_entry, target_print_req,"mdt_xmds");
3781 if (m->mdt_xmds_service == NULL) {
3782 CERROR("failed to start readpage service\n");
3783 GOTO(err_mdt_svc, rc = -ENOMEM);
3786 rc = ptlrpc_start_threads(NULL, m->mdt_xmds_service);
3788 GOTO(err_mdt_svc, rc);
3793 mdt_stop_ptlrpc_service(m);
3798 static void mdt_stack_fini(const struct lu_env *env,
3799 struct mdt_device *m, struct lu_device *top)
3801 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3802 struct lustre_cfg_bufs *bufs;
3803 struct lustre_cfg *lcfg;
3804 struct mdt_thread_info *info;
3808 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3809 LASSERT(info != NULL);
3811 bufs = &info->mti_u.bufs;
3812 /* process cleanup, pass mdt obd name to get obd umount flags */
3813 lustre_cfg_bufs_reset(bufs, obd->obd_name);
3818 lustre_cfg_bufs_set_string(bufs, 1, flags);
3819 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3821 CERROR("Cannot alloc lcfg!\n");
3826 top->ld_ops->ldo_process_config(env, top, lcfg);
3827 lustre_cfg_free(lcfg);
3829 lu_stack_fini(env, top);
3830 m->mdt_child = NULL;
3831 m->mdt_bottom = NULL;
3834 static struct lu_device *mdt_layer_setup(struct lu_env *env,
3835 const char *typename,
3836 struct lu_device *child,
3837 struct lustre_cfg *cfg)
3839 const char *dev = lustre_cfg_string(cfg, 0);
3840 struct obd_type *type;
3841 struct lu_device_type *ldt;
3842 struct lu_device *d;
3847 type = class_get_type(typename);
3849 CERROR("Unknown type: '%s'\n", typename);
3850 GOTO(out, rc = -ENODEV);
3853 rc = lu_context_refill(&env->le_ctx);
3855 CERROR("Failure to refill context: '%d'\n", rc);
3859 if (env->le_ses != NULL) {
3860 rc = lu_context_refill(env->le_ses);
3862 CERROR("Failure to refill session: '%d'\n", rc);
3869 CERROR("type: '%s'\n", typename);
3870 GOTO(out_type, rc = -EINVAL);
3873 ldt->ldt_obd_type = type;
3874 d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
3876 CERROR("Cannot allocate device: '%s'\n", typename);
3877 GOTO(out_type, rc = -ENODEV);
3880 LASSERT(child->ld_site);
3881 d->ld_site = child->ld_site;
3884 rc = ldt->ldt_ops->ldto_device_init(env, d, dev, child);
3886 CERROR("can't init device '%s', rc %d\n", typename, rc);
3887 GOTO(out_alloc, rc);
3890 lu_ref_add(&d->ld_reference, "lu-stack", &lu_site_init);
3895 ldt->ldt_ops->ldto_device_free(env, d);
3898 class_put_type(type);
3903 static int mdt_stack_init(struct lu_env *env,
3904 struct mdt_device *m, struct lustre_cfg *cfg)
3906 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3907 struct lu_device *tmp;
3908 struct md_device *md;
3912 /* init the stack */
3913 tmp = mdt_layer_setup(env, LUSTRE_OSD_NAME, d, cfg);
3915 RETURN(PTR_ERR(tmp));
3917 m->mdt_bottom = lu2dt_dev(tmp);
3919 tmp = mdt_layer_setup(env, LUSTRE_MDD_NAME, d, cfg);
3921 GOTO(out, rc = PTR_ERR(tmp));
3926 tmp = mdt_layer_setup(env, LUSTRE_CMM_NAME, d, cfg);
3928 GOTO(out, rc = PTR_ERR(tmp));
3931 /*set mdd upcall device*/
3932 md_upcall_dev_set(md, lu2md_dev(d));
3935 /*set cmm upcall device*/
3936 md_upcall_dev_set(md, &m->mdt_md_dev);
3938 m->mdt_child = lu2md_dev(d);
3940 /* process setup config */
3941 tmp = &m->mdt_md_dev.md_lu_dev;
3942 rc = tmp->ld_ops->ldo_process_config(env, tmp, cfg);
3945 /* fini from last known good lu_device */
3947 mdt_stack_fini(env, m, d);
3952 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
3954 struct md_device *next = m->mdt_child;
3955 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3956 struct lu_site *ls = d->ld_site;
3957 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3960 /* At this point, obd exports might still be on the "obd_zombie_exports"
3961 * list, and obd_zombie_impexp_thread() is trying to destroy them.
3962 * We wait a little bit until all exports (except the self-export)
3963 * have been destroyed, because the whole mdt stack might be accessed
3964 * in mdt_destroy_export(). This will not be a long time, maybe one or
3965 * two seconds are enough. This is not a problem while umounting.
3967 * The three references that should be remaining are the
3968 * obd_self_export and the attach and setup references.
3970 while (atomic_read(&obd->obd_refcount) > 3)
3971 cfs_schedule_timeout(CFS_TASK_UNINT, cfs_time_seconds(1));
3973 ping_evictor_stop();
3975 target_recovery_fini(obd);
3976 mdt_stop_ptlrpc_service(m);
3978 mdt_fs_cleanup(env, m);
3980 upcall_cache_cleanup(m->mdt_identity_cache);
3981 m->mdt_identity_cache = NULL;
3983 if (m->mdt_namespace != NULL) {
3984 ldlm_namespace_free(m->mdt_namespace, NULL, d->ld_obd->obd_force);
3985 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
3988 mdt_seq_fini(env, m);
3989 mdt_seq_fini_cli(m);
3990 mdt_fld_fini(env, m);
3992 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
3993 lprocfs_free_per_client_stats(obd);
3994 lprocfs_free_obd_stats(obd);
3995 ptlrpc_lprocfs_unregister_obd(d->ld_obd);
3996 lprocfs_obd_cleanup(d->ld_obd);
3998 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4000 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4001 cfs_timer_disarm(&m->mdt_ck_timer);
4002 mdt_ck_thread_stop(m);
4004 /* finish the stack */
4005 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4008 struct md_site *mite;
4011 mite = lu_site2md(ls);
4015 LASSERT(atomic_read(&d->ld_ref) == 0);
4016 md_device_fini(&m->mdt_md_dev);
4021 static void fsoptions_to_mdt_flags(struct mdt_device *m, char *options)
4025 #ifdef CONFIG_FS_POSIX_ACL
4026 /* ACLs should be enabled by default (b=13829) */
4027 m->mdt_opts.mo_acl = 1;
4028 LCONSOLE_INFO("Enabling ACL\n");
4030 m->mdt_opts.mo_acl = 0;
4031 LCONSOLE_INFO("Disabling ACL\n");
4040 while (*p && *p != ',')
4044 if ((len == sizeof("user_xattr") - 1) &&
4045 (memcmp(options, "user_xattr", len) == 0)) {
4046 m->mdt_opts.mo_user_xattr = 1;
4047 LCONSOLE_INFO("Enabling user_xattr\n");
4048 } else if ((len == sizeof("nouser_xattr") - 1) &&
4049 (memcmp(options, "nouser_xattr", len) == 0)) {
4050 m->mdt_opts.mo_user_xattr = 0;
4051 LCONSOLE_INFO("Disabling user_xattr\n");
4052 } else if ((len == sizeof("noacl") - 1) &&
4053 (memcmp(options, "noacl", len) == 0)) {
4054 m->mdt_opts.mo_acl = 0;
4055 LCONSOLE_INFO("Disabling ACL\n");
4062 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4064 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4065 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4067 struct lprocfs_static_vars lvars;
4068 struct mdt_thread_info *info;
4069 struct obd_device *obd;
4070 const char *dev = lustre_cfg_string(cfg, 0);
4071 const char *num = lustre_cfg_string(cfg, 2);
4072 struct lustre_mount_info *lmi;
4073 struct lustre_sb_info *lsi;
4075 struct md_site *mite;
4076 const char *identity_upcall = "NONE";
4080 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4081 LASSERT(info != NULL);
4083 obd = class_name2obd(dev);
4084 LASSERT(obd != NULL);
4086 spin_lock_init(&m->mdt_transno_lock);
4088 m->mdt_max_mdsize = MAX_MD_SIZE;
4089 m->mdt_max_cookiesize = sizeof(struct llog_cookie);
4091 m->mdt_opts.mo_user_xattr = 0;
4092 m->mdt_opts.mo_acl = 0;
4093 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4094 lmi = server_get_mount_2(dev);
4096 CERROR("Cannot get mount info for %s!\n", dev);
4099 lsi = s2lsi(lmi->lmi_sb);
4100 fsoptions_to_mdt_flags(m, lsi->lsi_lmd->lmd_opts);
4101 server_put_mount_2(dev, lmi->lmi_mnt);
4104 rwlock_init(&m->mdt_sptlrpc_lock);
4105 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4107 spin_lock_init(&m->mdt_ioepoch_lock);
4108 m->mdt_opts.mo_compat_resname = 0;
4109 m->mdt_capa_timeout = CAPA_TIMEOUT;
4110 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4111 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4113 spin_lock_init(&m->mdt_client_bitmap_lock);
4115 OBD_ALLOC_PTR(mite);
4119 md_device_init(&m->mdt_md_dev, ldt);
4122 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4123 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4124 /* set this lu_device to obd, because error handling need it */
4125 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4127 rc = lu_site_init(s, &m->mdt_md_dev.md_lu_dev);
4129 CERROR("Can't init lu_site, rc %d\n", rc);
4130 GOTO(err_free_site, rc);
4133 lprocfs_mdt_init_vars(&lvars);
4134 rc = lprocfs_obd_setup(obd, lvars.obd_vars);
4136 CERROR("Can't init lprocfs, rc %d\n", rc);
4137 GOTO(err_fini_site, rc);
4139 ptlrpc_lprocfs_register_obd(obd);
4141 rc = mdt_procfs_init(m, dev);
4143 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4144 GOTO(err_fini_proc, rc);
4147 obd->obd_proc_exports_entry = proc_mkdir("exports",
4148 obd->obd_proc_entry);
4149 if (obd->obd_proc_exports_entry)
4150 lprocfs_add_simple(obd->obd_proc_exports_entry,
4151 "clear", lprocfs_nid_stats_clear_read,
4152 lprocfs_nid_stats_clear_write, obd, NULL);
4154 /* set server index */
4156 lu_site2md(s)->ms_node_id = simple_strtol(num, NULL, 10);
4158 /* failover is the default
4159 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4160 * assumed whose ls_node_id == 0 XXX
4162 obd->obd_replayable = 1;
4163 /* No connection accepted until configurations will finish */
4164 obd->obd_no_conn = 1;
4166 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4167 char *str = lustre_cfg_string(cfg, 4);
4168 if (strchr(str, 'n')) {
4169 CWARN("%s: recovery disabled\n", obd->obd_name);
4170 obd->obd_replayable = 0;
4174 /* init the stack */
4175 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4177 CERROR("Can't init device stack, rc %d\n", rc);
4178 GOTO(err_fini_proc, rc);
4181 rc = mdt_fld_init(env, obd->obd_name, m);
4183 GOTO(err_fini_stack, rc);
4185 rc = mdt_seq_init(env, obd->obd_name, m);
4187 GOTO(err_fini_fld, rc);
4189 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4190 LUSTRE_MDT_NAME"-%p", m);
4191 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4192 LDLM_NAMESPACE_SERVER,
4193 LDLM_NAMESPACE_GREEDY);
4194 if (m->mdt_namespace == NULL)
4195 GOTO(err_fini_seq, rc = -ENOMEM);
4197 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4198 /* set obd_namespace for compatibility with old code */
4199 obd->obd_namespace = m->mdt_namespace;
4201 /* XXX: to support suppgid for ACL, we enable identity_upcall
4202 * by default, otherwise, maybe got unexpected -EACCESS. */
4203 if (m->mdt_opts.mo_acl)
4204 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4206 m->mdt_identity_cache = upcall_cache_init(obd->obd_name, identity_upcall,
4207 &mdt_identity_upcall_cache_ops);
4208 if (IS_ERR(m->mdt_identity_cache)) {
4209 rc = PTR_ERR(m->mdt_identity_cache);
4210 m->mdt_identity_cache = NULL;
4211 GOTO(err_free_ns, rc);
4214 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4216 rc = mdt_ck_thread_start(m);
4218 GOTO(err_free_ns, rc);
4220 rc = mdt_fs_setup(env, m, obd);
4224 target_recovery_init(obd, mdt_recovery_handle);
4226 rc = mdt_start_ptlrpc_service(m);
4228 GOTO(err_fs_cleanup, rc);
4230 ping_evictor_start();
4232 rc = lu_site_init_finish(s);
4234 GOTO(err_stop_service, rc);
4236 if (obd->obd_recovering == 0)
4237 mdt_postrecov(env, m);
4239 mdt_init_capa_ctxt(env, m);
4241 /* Reduce the initial timeout on an MDS because it doesn't need such
4242 * a long timeout as an OST does. Adaptive timeouts will adjust this
4243 * value appropriately. */
4244 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4245 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4250 ping_evictor_stop();
4251 mdt_stop_ptlrpc_service(m);
4253 target_recovery_fini(obd);
4254 mdt_fs_cleanup(env, m);
4256 cfs_timer_disarm(&m->mdt_ck_timer);
4257 mdt_ck_thread_stop(m);
4259 upcall_cache_cleanup(m->mdt_identity_cache);
4260 m->mdt_identity_cache = NULL;
4261 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4262 obd->obd_namespace = m->mdt_namespace = NULL;
4264 mdt_seq_fini(env, m);
4266 mdt_fld_fini(env, m);
4268 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4271 if (obd->obd_proc_exports_entry)
4272 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
4273 ptlrpc_lprocfs_unregister_obd(obd);
4274 lprocfs_obd_cleanup(obd);
4280 md_device_fini(&m->mdt_md_dev);
4284 /* used by MGS to process specific configurations */
4285 static int mdt_process_config(const struct lu_env *env,
4286 struct lu_device *d, struct lustre_cfg *cfg)
4288 struct mdt_device *m = mdt_dev(d);
4289 struct md_device *md_next = m->mdt_child;
4290 struct lu_device *next = md2lu_dev(md_next);
4294 switch (cfg->lcfg_command) {
4295 case LCFG_SPTLRPC_CONF: {
4296 struct sptlrpc_conf_log *log;
4297 struct sptlrpc_rule_set tmp_rset;
4299 log = sptlrpc_conf_log_extract(cfg);
4305 sptlrpc_rule_set_init(&tmp_rset);
4307 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4309 CERROR("mdt %p: failed get sptlrpc rules: %d\n", m, rc);
4313 write_lock(&m->mdt_sptlrpc_lock);
4314 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4315 m->mdt_sptlrpc_rset = tmp_rset;
4316 write_unlock(&m->mdt_sptlrpc_lock);
4318 sptlrpc_target_update_exp_flavor(
4319 md2lu_dev(&m->mdt_md_dev)->ld_obd, &tmp_rset);
4324 struct lprocfs_static_vars lvars;
4325 struct obd_device *obd = d->ld_obd;
4327 lprocfs_mdt_init_vars(&lvars);
4328 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4331 /* we don't understand; pass it on */
4332 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4337 * Add mdc hook to get first MDT uuid and connect it to
4338 * ls->controller to use for seq manager.
4340 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4342 CERROR("Can't add mdc, rc %d\n", rc);
4344 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
4347 /* others are passed further */
4348 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4354 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4355 const struct lu_object_header *hdr,
4356 struct lu_device *d)
4358 struct mdt_object *mo;
4364 struct lu_object *o;
4365 struct lu_object_header *h;
4367 o = &mo->mot_obj.mo_lu;
4368 h = &mo->mot_header;
4369 lu_object_header_init(h);
4370 lu_object_init(o, h, d);
4371 lu_object_add_top(h, o);
4372 o->lo_ops = &mdt_obj_ops;
4378 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4379 const struct lu_object_conf *_)
4381 struct mdt_device *d = mdt_dev(o->lo_dev);
4382 struct lu_device *under;
4383 struct lu_object *below;
4387 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4388 PFID(lu_object_fid(o)));
4390 under = &d->mdt_child->md_lu_dev;
4391 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4392 if (below != NULL) {
4393 lu_object_add(o, below);
4400 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4402 struct mdt_object *mo = mdt_obj(o);
4403 struct lu_object_header *h;
4407 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4408 PFID(lu_object_fid(o)));
4411 lu_object_header_fini(h);
4416 static const struct lu_device_operations mdt_lu_ops = {
4417 .ldo_object_alloc = mdt_object_alloc,
4418 .ldo_process_config = mdt_process_config
4421 static const struct lu_object_operations mdt_obj_ops = {
4422 .loo_object_init = mdt_object_init,
4423 .loo_object_free = mdt_object_free
4426 /* mds_connect_internal */
4427 static int mdt_connect_internal(struct obd_export *exp,
4428 struct mdt_device *mdt,
4429 struct obd_connect_data *data)
4434 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4435 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4437 /* If no known bits (which should not happen, probably,
4438 as everybody should support LOOKUP and UPDATE bits at least)
4439 revert to compat mode with plain locks. */
4440 if (!data->ocd_ibits_known &&
4441 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4442 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4444 if (!mdt->mdt_opts.mo_acl)
4445 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4447 if (!mdt->mdt_opts.mo_user_xattr)
4448 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4450 if (!mdt->mdt_opts.mo_mds_capa)
4451 data->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
4453 if (!mdt->mdt_opts.mo_oss_capa)
4454 data->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
4456 spin_lock(&exp->exp_lock);
4457 exp->exp_connect_flags = data->ocd_connect_flags;
4458 spin_unlock(&exp->exp_lock);
4459 data->ocd_version = LUSTRE_VERSION_CODE;
4460 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
4464 if (mdt->mdt_opts.mo_acl &&
4465 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
4466 CWARN("%s: MDS requires ACL support but client does not\n",
4467 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4472 flags = OBD_CONNECT_LCL_CLIENT | OBD_CONNECT_RMT_CLIENT;
4473 if ((exp->exp_connect_flags & flags) == flags) {
4474 CWARN("%s: both local and remote client flags are set\n",
4475 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4479 if (mdt->mdt_opts.mo_mds_capa &&
4480 ((exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) == 0)) {
4481 CWARN("%s: MDS requires capability support, but client not\n",
4482 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4486 if (mdt->mdt_opts.mo_oss_capa &&
4487 ((exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA) == 0)) {
4488 CWARN("%s: MDS requires OSS capability support, "
4490 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4494 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
4495 CWARN("%s: MDS requires FID support, but client not\n",
4496 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4503 /* mds_connect copy */
4504 static int mdt_obd_connect(const struct lu_env *env,
4505 struct lustre_handle *conn, struct obd_device *obd,
4506 struct obd_uuid *cluuid,
4507 struct obd_connect_data *data,
4510 struct mdt_thread_info *info;
4511 struct lsd_client_data *lcd;
4512 struct obd_export *exp;
4513 struct mdt_device *mdt;
4514 struct ptlrpc_request *req;
4518 LASSERT(env != NULL);
4519 if (!conn || !obd || !cluuid)
4522 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4523 req = info->mti_pill->rc_req;
4524 mdt = mdt_dev(obd->obd_lu_dev);
4526 rc = class_connect(conn, obd, cluuid);
4530 exp = class_conn2export(conn);
4531 LASSERT(exp != NULL);
4533 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4535 spin_lock(&exp->exp_lock);
4536 exp->exp_sp_peer = req->rq_sp_from;
4538 read_lock(&mdt->mdt_sptlrpc_lock);
4539 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset, exp->exp_sp_peer,
4540 req->rq_peer.nid, &exp->exp_flvr);
4541 read_unlock(&mdt->mdt_sptlrpc_lock);
4543 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4544 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4545 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4546 libcfs_nid2str(req->rq_peer.nid));
4547 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4548 spin_unlock(&exp->exp_lock);
4551 spin_unlock(&exp->exp_lock);
4553 rc = mdt_connect_internal(exp, mdt, data);
4557 struct mdt_thread_info *mti;
4558 mti = lu_context_key_get(&env->le_ctx,
4560 LASSERT(mti != NULL);
4562 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
4563 exp->exp_mdt_data.med_lcd = lcd;
4564 rc = mdt_client_new(env, mdt);
4567 exp->exp_mdt_data.med_lcd = NULL;
4569 mdt_export_stats_init(obd, exp, localdata);
4576 class_disconnect(exp);
4578 class_export_put(exp);
4583 static int mdt_obd_reconnect(const struct lu_env *env,
4584 struct obd_export *exp, struct obd_device *obd,
4585 struct obd_uuid *cluuid,
4586 struct obd_connect_data *data,
4589 struct mdt_thread_info *info;
4590 struct mdt_device *mdt;
4591 struct ptlrpc_request *req;
4595 if (exp == NULL || obd == NULL || cluuid == NULL)
4598 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4599 req = info->mti_pill->rc_req;
4600 mdt = mdt_dev(obd->obd_lu_dev);
4602 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4604 spin_lock(&exp->exp_lock);
4605 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
4606 exp->exp_sp_peer = req->rq_sp_from;
4608 read_lock(&mdt->mdt_sptlrpc_lock);
4609 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset,
4611 req->rq_peer.nid, &exp->exp_flvr);
4612 read_unlock(&mdt->mdt_sptlrpc_lock);
4614 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4615 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4616 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4617 libcfs_nid2str(req->rq_peer.nid));
4618 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4619 spin_unlock(&exp->exp_lock);
4623 spin_unlock(&exp->exp_lock);
4625 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
4627 mdt_export_stats_init(obd, exp, localdata);
4632 static int mdt_obd_disconnect(struct obd_export *exp)
4634 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
4639 class_export_get(exp);
4641 /* Disconnect early so that clients can't keep using export */
4642 rc = class_disconnect(exp);
4643 if (mdt->mdt_namespace != NULL || exp->exp_obd->obd_namespace != NULL)
4644 ldlm_cancel_locks_for_export(exp);
4646 /* release nid stat refererence */
4647 lprocfs_exp_cleanup(exp);
4649 /* complete all outstanding replies */
4650 spin_lock(&exp->exp_lock);
4651 while (!list_empty(&exp->exp_outstanding_replies)) {
4652 struct ptlrpc_reply_state *rs =
4653 list_entry(exp->exp_outstanding_replies.next,
4654 struct ptlrpc_reply_state, rs_exp_list);
4655 struct ptlrpc_service *svc = rs->rs_service;
4657 spin_lock(&svc->srv_lock);
4658 list_del_init(&rs->rs_exp_list);
4659 ptlrpc_schedule_difficult_reply(rs);
4660 spin_unlock(&svc->srv_lock);
4662 spin_unlock(&exp->exp_lock);
4664 class_export_put(exp);
4668 /* FIXME: Can we avoid using these two interfaces? */
4669 static int mdt_init_export(struct obd_export *exp)
4671 struct mdt_export_data *med = &exp->exp_mdt_data;
4675 CFS_INIT_LIST_HEAD(&med->med_open_head);
4676 spin_lock_init(&med->med_open_lock);
4677 sema_init(&med->med_idmap_sem, 1);
4678 med->med_idmap = NULL;
4679 spin_lock(&exp->exp_lock);
4680 exp->exp_connecting = 1;
4681 spin_unlock(&exp->exp_lock);
4682 rc = ldlm_init_export(exp);
4684 CERROR("Error %d while initializing export\n", rc);
4688 static int mdt_destroy_export(struct obd_export *export)
4690 struct mdt_export_data *med;
4691 struct obd_device *obd = export->exp_obd;
4692 struct mdt_device *mdt;
4693 struct mdt_thread_info *info;
4698 CFS_LIST_HEAD(closing_list);
4699 struct mdt_file_data *mfd, *n;
4703 med = &export->exp_mdt_data;
4704 if (med->med_rmtclient)
4705 mdt_cleanup_idmap(med);
4707 target_destroy_export(export);
4708 ldlm_destroy_export(export);
4710 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
4713 mdt = mdt_dev(obd->obd_lu_dev);
4714 LASSERT(mdt != NULL);
4716 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4720 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
4721 LASSERT(info != NULL);
4722 memset(info, 0, sizeof *info);
4723 info->mti_env = &env;
4724 info->mti_mdt = mdt;
4725 info->mti_exp = export;
4727 ma = &info->mti_attr;
4728 lmm_size = ma->ma_lmm_size = mdt->mdt_max_mdsize;
4729 cookie_size = ma->ma_cookie_size = mdt->mdt_max_cookiesize;
4730 OBD_ALLOC(ma->ma_lmm, lmm_size);
4731 OBD_ALLOC(ma->ma_cookie, cookie_size);
4733 if (ma->ma_lmm == NULL || ma->ma_cookie == NULL)
4734 GOTO(out, rc = -ENOMEM);
4735 ma->ma_need = MA_LOV | MA_COOKIE;
4737 /* Close any open files (which may also cause orphan unlinking). */
4738 spin_lock(&med->med_open_lock);
4739 while (!list_empty(&med->med_open_head)) {
4740 struct list_head *tmp = med->med_open_head.next;
4741 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
4743 /* Remove mfd handle so it can't be found again.
4744 * We are consuming the mfd_list reference here. */
4745 class_handle_unhash(&mfd->mfd_handle);
4746 list_move_tail(&mfd->mfd_list, &closing_list);
4748 spin_unlock(&med->med_open_lock);
4750 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
4751 list_del_init(&mfd->mfd_list);
4752 mdt_mfd_close(info, mfd);
4753 /* TODO: if we close the unlinked file,
4754 * we need to remove it's objects from OST */
4755 memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
4756 spin_lock(&med->med_open_lock);
4757 ma->ma_lmm_size = lmm_size;
4758 ma->ma_cookie_size = cookie_size;
4759 ma->ma_need = MA_LOV | MA_COOKIE;
4761 spin_unlock(&med->med_open_lock);
4764 info->mti_mdt = NULL;
4765 mdt_client_del(&env, mdt);
4770 OBD_FREE(ma->ma_lmm, lmm_size);
4774 OBD_FREE(ma->ma_cookie, cookie_size);
4775 ma->ma_cookie = NULL;
4782 static void mdt_allow_cli(struct mdt_device *m, unsigned int flag)
4784 if (flag & CONFIG_LOG)
4785 m->mdt_fl_cfglog = 1;
4786 if (flag & CONFIG_SYNC)
4787 m->mdt_fl_synced = 1;
4789 if (m->mdt_fl_cfglog /* bz11778: && m->mdt_fl_synced */)
4790 /* Open for clients */
4791 m->mdt_md_dev.md_lu_dev.ld_obd->obd_no_conn = 0;
4794 static int mdt_upcall(const struct lu_env *env, struct md_device *md,
4795 enum md_upcall_event ev)
4797 struct mdt_device *m = mdt_dev(&md->md_lu_dev);
4798 struct md_device *next = m->mdt_child;
4799 struct mdt_thread_info *mti;
4805 rc = next->md_ops->mdo_maxsize_get(env, next,
4807 &m->mdt_max_cookiesize);
4808 CDEBUG(D_INFO, "get max mdsize %d max cookiesize %d\n",
4809 m->mdt_max_mdsize, m->mdt_max_cookiesize);
4810 mdt_allow_cli(m, CONFIG_SYNC);
4813 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4814 mti->mti_no_need_trans = 1;
4815 CDEBUG(D_INFO, "disable mdt trans for this thread\n");
4818 /* Check that MDT is not yet configured */
4819 LASSERT(!m->mdt_fl_cfglog);
4822 CERROR("invalid event\n");
4829 static int mdt_obd_notify(struct obd_device *host,
4830 struct obd_device *watched,
4831 enum obd_notify_event ev, void *data)
4836 case OBD_NOTIFY_CONFIG:
4837 mdt_allow_cli(mdt_dev(host->obd_lu_dev), (unsigned long)data);
4840 CDEBUG(D_INFO, "Unhandled notification %#x\n", ev);
4845 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
4846 void *karg, void *uarg)
4849 struct obd_device *obd= exp->exp_obd;
4850 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
4851 struct dt_device *dt = mdt->mdt_bottom;
4855 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
4856 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4862 rc = mdt_device_sync(&env, mdt);
4864 case OBD_IOC_SET_READONLY:
4865 dt->dd_ops->dt_ro(&env, dt);
4867 case OBD_IOC_ABORT_RECOVERY:
4868 CERROR("Aborting recovery for device %s\n", obd->obd_name);
4869 target_stop_recovery_thread(obd);
4873 CERROR("Not supported cmd = %d for device %s\n",
4874 cmd, obd->obd_name);
4882 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
4884 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
4885 struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
4888 /* if some clients didn't participate in recovery then we can possibly
4889 * lost sequence. Now we should increase sequence for safe value */
4890 lost = obd->obd_max_recoverable_clients - obd->obd_connected_clients;
4891 mdt_seq_adjust(env, mdt, lost);
4893 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
4897 int mdt_obd_postrecov(struct obd_device *obd)
4902 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4905 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
4910 static struct obd_ops mdt_obd_device_ops = {
4911 .o_owner = THIS_MODULE,
4912 .o_connect = mdt_obd_connect,
4913 .o_reconnect = mdt_obd_reconnect,
4914 .o_disconnect = mdt_obd_disconnect,
4915 .o_init_export = mdt_init_export,
4916 .o_destroy_export = mdt_destroy_export,
4917 .o_iocontrol = mdt_iocontrol,
4918 .o_postrecov = mdt_obd_postrecov,
4919 .o_notify = mdt_obd_notify
4922 static struct lu_device* mdt_device_fini(const struct lu_env *env,
4923 struct lu_device *d)
4925 struct mdt_device *m = mdt_dev(d);
4932 static struct lu_device *mdt_device_free(const struct lu_env *env,
4933 struct lu_device *d)
4935 struct mdt_device *m = mdt_dev(d);
4942 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
4943 struct lu_device_type *t,
4944 struct lustre_cfg *cfg)
4946 struct lu_device *l;
4947 struct mdt_device *m;
4953 l = &m->mdt_md_dev.md_lu_dev;
4954 rc = mdt_init0(env, m, t, cfg);
4960 md_upcall_init(&m->mdt_md_dev, mdt_upcall);
4962 l = ERR_PTR(-ENOMEM);
4966 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
4967 LU_KEY_INIT_FINI(mdt, struct mdt_thread_info);
4969 /* context key: mdt_thread_key */
4970 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
4972 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
4973 LU_KEY_INIT_FINI(mdt_txn, struct mdt_txn_info);
4975 struct lu_context_key mdt_txn_key = {
4976 .lct_tags = LCT_TX_HANDLE,
4977 .lct_init = mdt_txn_key_init,
4978 .lct_fini = mdt_txn_key_fini
4981 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
4983 return md_ucred(info->mti_env);
4987 * Enable/disable COS.
4989 * Set/Clear the COS flag in mdt options.
4991 * \param mdt mdt device
4992 * \param val 0 disables COS, other values enable COS
4994 void mdt_enable_cos(struct mdt_device *mdt, int val)
4999 mdt->mdt_opts.mo_cos = !!val;
5000 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
5001 if (unlikely(rc != 0)) {
5002 CWARN("lu_env initialization failed with rc = %d,"
5003 "cannot sync\n", rc);
5006 mdt_device_sync(&env, mdt);
5013 * Return COS flag status/
5015 * \param mdt mdt device
5017 int mdt_cos_is_enabled(struct mdt_device *mdt)
5019 return mdt->mdt_opts.mo_cos != 0;
5022 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
5023 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key, &mdt_txn_key);
5025 static struct lu_device_type_operations mdt_device_type_ops = {
5026 .ldto_init = mdt_type_init,
5027 .ldto_fini = mdt_type_fini,
5029 .ldto_start = mdt_type_start,
5030 .ldto_stop = mdt_type_stop,
5032 .ldto_device_alloc = mdt_device_alloc,
5033 .ldto_device_free = mdt_device_free,
5034 .ldto_device_fini = mdt_device_fini
5037 static struct lu_device_type mdt_device_type = {
5038 .ldt_tags = LU_DEVICE_MD,
5039 .ldt_name = LUSTRE_MDT_NAME,
5040 .ldt_ops = &mdt_device_type_ops,
5041 .ldt_ctx_tags = LCT_MD_THREAD
5044 static int __init mdt_mod_init(void)
5046 struct lprocfs_static_vars lvars;
5049 mdt_num_threads = MDT_NUM_THREADS;
5050 lprocfs_mdt_init_vars(&lvars);
5051 rc = class_register_type(&mdt_obd_device_ops, NULL,
5052 lvars.module_vars, LUSTRE_MDT_NAME,
5058 static void __exit mdt_mod_exit(void)
5060 class_unregister_type(LUSTRE_MDT_NAME);
5064 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
5065 [prefix ## _ ## opc - prefix ## _ ## base] = { \
5067 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
5068 .mh_opc = prefix ## _ ## opc, \
5069 .mh_flags = flags, \
5074 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
5075 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
5077 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
5078 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
5080 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
5081 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
5083 * Request with a format known in advance
5085 #define DEF_MDT_HNDL_F(flags, name, fn) \
5086 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
5088 #define DEF_SEQ_HNDL_F(flags, name, fn) \
5089 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
5091 #define DEF_FLD_HNDL_F(flags, name, fn) \
5092 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
5094 * Request with a format we do not yet know
5096 #define DEF_MDT_HNDL_0(flags, name, fn) \
5097 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
5099 static struct mdt_handler mdt_mds_ops[] = {
5100 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5101 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
5102 DEF_MDT_HNDL_F(0, SET_INFO, mdt_set_info),
5103 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
5104 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
5105 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
5106 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
5107 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
5108 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
5109 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5110 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5111 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
5112 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
5113 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5114 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck_handle),
5115 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl_handle)
5118 #define DEF_OBD_HNDL(flags, name, fn) \
5119 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
5122 static struct mdt_handler mdt_obd_ops[] = {
5123 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
5124 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
5125 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback)
5128 #define DEF_DLM_HNDL_0(flags, name, fn) \
5129 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
5130 #define DEF_DLM_HNDL_F(flags, name, fn) \
5131 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
5133 static struct mdt_handler mdt_dlm_ops[] = {
5134 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
5135 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
5136 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
5137 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
5140 static struct mdt_handler mdt_llog_ops[] = {
5143 #define DEF_SEC_CTX_HNDL(name, fn) \
5144 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
5146 static struct mdt_handler mdt_sec_ctx_ops[] = {
5147 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
5148 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
5149 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
5152 static struct mdt_opc_slice mdt_regular_handlers[] = {
5154 .mos_opc_start = MDS_GETATTR,
5155 .mos_opc_end = MDS_LAST_OPC,
5156 .mos_hs = mdt_mds_ops
5159 .mos_opc_start = OBD_PING,
5160 .mos_opc_end = OBD_LAST_OPC,
5161 .mos_hs = mdt_obd_ops
5164 .mos_opc_start = LDLM_ENQUEUE,
5165 .mos_opc_end = LDLM_LAST_OPC,
5166 .mos_hs = mdt_dlm_ops
5169 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
5170 .mos_opc_end = LLOG_LAST_OPC,
5171 .mos_hs = mdt_llog_ops
5174 .mos_opc_start = SEC_CTX_INIT,
5175 .mos_opc_end = SEC_LAST_OPC,
5176 .mos_hs = mdt_sec_ctx_ops
5183 static struct mdt_handler mdt_readpage_ops[] = {
5184 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5185 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
5186 #ifdef HAVE_SPLIT_SUPPORT
5187 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
5191 * XXX: this is ugly and should be fixed one day, see mdc_close() for
5192 * detailed comments. --umka
5194 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5195 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5198 static struct mdt_opc_slice mdt_readpage_handlers[] = {
5200 .mos_opc_start = MDS_GETATTR,
5201 .mos_opc_end = MDS_LAST_OPC,
5202 .mos_hs = mdt_readpage_ops
5209 static struct mdt_handler mdt_xmds_ops[] = {
5210 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5211 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
5212 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
5213 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5216 static struct mdt_opc_slice mdt_xmds_handlers[] = {
5218 .mos_opc_start = MDS_GETATTR,
5219 .mos_opc_end = MDS_LAST_OPC,
5220 .mos_hs = mdt_xmds_ops
5223 .mos_opc_start = OBD_PING,
5224 .mos_opc_end = OBD_LAST_OPC,
5225 .mos_hs = mdt_obd_ops
5228 .mos_opc_start = SEC_CTX_INIT,
5229 .mos_opc_end = SEC_LAST_OPC,
5230 .mos_hs = mdt_sec_ctx_ops
5237 static struct mdt_handler mdt_seq_ops[] = {
5238 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
5241 static struct mdt_opc_slice mdt_seq_handlers[] = {
5243 .mos_opc_start = SEQ_QUERY,
5244 .mos_opc_end = SEQ_LAST_OPC,
5245 .mos_hs = mdt_seq_ops
5252 static struct mdt_handler mdt_fld_ops[] = {
5253 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
5256 static struct mdt_opc_slice mdt_fld_handlers[] = {
5258 .mos_opc_start = FLD_QUERY,
5259 .mos_opc_end = FLD_LAST_OPC,
5260 .mos_hs = mdt_fld_ops
5267 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5268 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
5269 MODULE_LICENSE("GPL");
5271 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
5272 "number of mdt service threads to start");
5274 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);