1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * lustre/mdt/mdt_handler.c
5 * Lustre Metadata Target (mdt) request handler
7 * Copyright (c) 2006 Cluster File Systems, Inc.
8 * Author: Peter Braam <braam@clusterfs.com>
9 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * Author: Phil Schwan <phil@clusterfs.com>
11 * Author: Mike Shaver <shaver@clusterfs.com>
12 * Author: Nikita Danilov <nikita@clusterfs.com>
13 * Author: Huang Hua <huanghua@clusterfs.com>
14 * Author: Yury Umanets <umka@clusterfs.com>
16 * This file is part of the Lustre file system, http://www.lustre.org
17 * Lustre is a trademark of Cluster File Systems, Inc.
19 * You may have signed or agreed to another license before downloading
20 * this software. If so, you are bound by the terms and conditions
21 * of that agreement, and the following does not apply to you. See the
22 * LICENSE file included with this distribution for more information.
24 * If you did not agree to a different license, then this copy of Lustre
25 * is open source software; you can redistribute it and/or modify it
26 * under the terms of version 2 of the GNU General Public License as
27 * published by the Free Software Foundation.
29 * In either case, Lustre is distributed in the hope that it will be
30 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
31 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * license text for more details.
36 # define EXPORT_SYMTAB
38 #define DEBUG_SUBSYSTEM S_MDS
40 #include <linux/module.h>
42 * struct OBD_{ALLOC,FREE}*()
44 #include <obd_support.h>
45 /* struct ptlrpc_request */
46 #include <lustre_net.h>
47 /* struct obd_export */
48 #include <lustre_export.h>
49 /* struct obd_device */
52 #include <dt_object.h>
53 #include <lustre_mds.h>
54 #include <lustre_mdt.h>
55 #include "mdt_internal.h"
56 #include <linux/lustre_acl.h>
57 #include <lustre_param.h>
59 mdl_mode_t mdt_mdl_lock_modes[] = {
60 [LCK_MINMODE] = MDL_MINMODE,
67 [LCK_GROUP] = MDL_GROUP
70 ldlm_mode_t mdt_dlm_lock_modes[] = {
71 [MDL_MINMODE] = LCK_MINMODE,
78 [MDL_GROUP] = LCK_GROUP
82 * Initialized in mdt_mod_init().
84 unsigned long mdt_num_threads;
86 /* ptlrpc request handler for MDT. All handlers are
87 * grouped into several slices - struct mdt_opc_slice,
88 * and stored in an array - mdt_handlers[].
91 /* The name of this handler. */
93 /* Fail id for this handler, checked at the beginning of this handler*/
95 /* Operation code for this handler */
97 /* flags are listed in enum mdt_handler_flags below. */
99 /* The actual handler function to execute. */
100 int (*mh_act)(struct mdt_thread_info *info);
101 /* Request format for this request. */
102 const struct req_format *mh_fmt;
105 enum mdt_handler_flags {
107 * struct mdt_body is passed in the incoming message, and object
108 * identified by this fid exists on disk.
110 * "habeo corpus" == "I have a body"
112 HABEO_CORPUS = (1 << 0),
114 * struct ldlm_request is passed in the incoming message.
116 * "habeo clavis" == "I have a key"
118 HABEO_CLAVIS = (1 << 1),
120 * this request has fixed reply format, so that reply message can be
121 * packed by generic code.
123 * "habeo refero" == "I have a reply"
125 HABEO_REFERO = (1 << 2),
127 * this request will modify something, so check whether the filesystem
128 * is readonly or not, then return -EROFS to client asap if necessary.
130 * "mutabor" == "I shall modify"
135 struct mdt_opc_slice {
138 struct mdt_handler *mos_hs;
141 static struct mdt_opc_slice mdt_regular_handlers[];
142 static struct mdt_opc_slice mdt_readpage_handlers[];
143 static struct mdt_opc_slice mdt_xmds_handlers[];
144 static struct mdt_opc_slice mdt_seq_handlers[];
145 static struct mdt_opc_slice mdt_fld_handlers[];
147 static struct mdt_device *mdt_dev(struct lu_device *d);
148 static int mdt_regular_handle(struct ptlrpc_request *req);
149 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
151 static struct lu_object_operations mdt_obj_ops;
153 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
157 return (rep->lock_policy_res1 & flag);
160 void mdt_clear_disposition(struct mdt_thread_info *info,
161 struct ldlm_reply *rep, int flag)
164 info->mti_opdata &= ~flag;
166 rep->lock_policy_res1 &= ~flag;
169 void mdt_set_disposition(struct mdt_thread_info *info,
170 struct ldlm_reply *rep, int flag)
173 info->mti_opdata |= flag;
175 rep->lock_policy_res1 |= flag;
178 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
180 lh->mlh_pdo_hash = 0;
181 lh->mlh_reg_mode = lm;
182 lh->mlh_type = MDT_REG_LOCK;
185 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
186 const char *name, int namelen)
188 lh->mlh_reg_mode = lm;
189 lh->mlh_type = MDT_PDO_LOCK;
192 LASSERT(namelen > 0);
193 lh->mlh_pdo_hash = full_name_hash(name, namelen);
195 LASSERT(namelen == 0);
196 lh->mlh_pdo_hash = 0ull;
200 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
201 struct mdt_lock_handle *lh)
207 * Any dir access needs couple of locks:
209 * 1) on part of dir we gonna take lookup/modify;
211 * 2) on whole dir to protect it from concurrent splitting and/or to
212 * flush client's cache for readdir().
214 * so, for a given mode and object this routine decides what lock mode
215 * to use for lock #2:
217 * 1) if caller's gonna lookup in dir then we need to protect dir from
218 * being splitted only - LCK_CR
220 * 2) if caller's gonna modify dir then we need to protect dir from
221 * being splitted and to flush cache - LCK_CW
223 * 3) if caller's gonna modify dir and that dir seems ready for
224 * splitting then we need to protect it from any type of access
225 * (lookup/modify/split) - LCK_EX --bzzz
228 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
229 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
232 * Ask underlaying level its opinion about preferable PDO lock mode
233 * having access type passed as regular lock mode:
235 * - MDL_MINMODE means that lower layer does not want to specify lock
238 * - MDL_NL means that no PDO lock should be taken. This is used in some
239 * cases. Say, for non-splittable directories no need to use PDO locks
242 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
243 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
245 if (mode != MDL_MINMODE) {
246 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
249 * Lower layer does not want to specify locking mode. We do it
250 * our selves. No special protection is needed, just flush
251 * client's cache on modification and allow concurrent
254 switch (lh->mlh_reg_mode) {
256 lh->mlh_pdo_mode = LCK_EX;
259 lh->mlh_pdo_mode = LCK_CR;
262 lh->mlh_pdo_mode = LCK_CW;
265 CERROR("Not expected lock type (0x%x)\n",
266 (int)lh->mlh_reg_mode);
271 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
275 static int mdt_getstatus(struct mdt_thread_info *info)
277 struct mdt_device *mdt = info->mti_mdt;
278 struct md_device *next = mdt->mdt_child;
279 struct mdt_body *repbody;
284 rc = mdt_check_ucred(info);
286 RETURN(err_serious(rc));
288 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
289 RETURN(err_serious(-ENOMEM));
291 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
292 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
296 repbody->valid |= OBD_MD_FLID;
298 if (mdt->mdt_opts.mo_mds_capa) {
299 struct mdt_object *root;
300 struct lustre_capa *capa;
302 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
304 RETURN(PTR_ERR(root));
306 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
308 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
310 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
312 mdt_object_put(info->mti_env, root);
314 repbody->valid |= OBD_MD_FLMDSCAPA;
320 static int mdt_statfs(struct mdt_thread_info *info)
322 struct md_device *next = info->mti_mdt->mdt_child;
323 struct obd_statfs *osfs;
328 /* This will trigger a watchdog timeout */
329 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
330 (MDT_SERVICE_WATCHDOG_TIMEOUT / 1000) + 1);
332 rc = mdt_check_ucred(info);
334 RETURN(err_serious(rc));
336 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
337 rc = err_serious(-ENOMEM);
339 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
340 rc = next->md_ops->mdo_statfs(info->mti_env, next,
342 statfs_pack(osfs, &info->mti_u.ksfs);
347 void mdt_pack_size2body(struct mdt_thread_info *info, struct mdt_object *o)
350 struct lu_attr *attr = &info->mti_attr.ma_attr;
352 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
354 /* Check if Size-on-MDS is enabled. */
355 if ((mdt_conn_flags(info) & OBD_CONNECT_SOM) &&
356 S_ISREG(attr->la_mode) && mdt_sizeonmds_enabled(o)) {
357 b->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
358 b->size = attr->la_size;
359 b->blocks = attr->la_blocks;
363 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
364 const struct lu_attr *attr, const struct lu_fid *fid)
366 /*XXX should pack the reply body according to lu_valid*/
367 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
368 OBD_MD_FLGID | OBD_MD_FLTYPE |
369 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
370 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
372 if (!S_ISREG(attr->la_mode))
373 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
375 b->atime = attr->la_atime;
376 b->mtime = attr->la_mtime;
377 b->ctime = attr->la_ctime;
378 b->mode = attr->la_mode;
379 b->size = attr->la_size;
380 b->blocks = attr->la_blocks;
381 b->uid = attr->la_uid;
382 b->gid = attr->la_gid;
383 b->flags = attr->la_flags;
384 b->nlink = attr->la_nlink;
385 b->rdev = attr->la_rdev;
389 b->valid |= OBD_MD_FLID;
391 /* FIXME: these should be fixed when new igif ready.*/
392 b->ino = fid_oid(fid); /* 1.6 compatibility */
393 b->generation = fid_ver(fid); /* 1.6 compatibility */
394 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
396 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
397 PFID(fid), b->nlink, b->mode, b->size);
401 mdt_body_reverse_idmap(info, b);
404 static inline int mdt_body_has_lov(const struct lu_attr *la,
405 const struct mdt_body *body)
407 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
408 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
411 static int mdt_getattr_internal(struct mdt_thread_info *info,
412 struct mdt_object *o)
414 struct md_object *next = mdt_object_child(o);
415 const struct mdt_body *reqbody = info->mti_body;
416 struct ptlrpc_request *req = mdt_info_req(info);
417 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
418 struct md_attr *ma = &info->mti_attr;
419 struct lu_attr *la = &ma->ma_attr;
420 struct req_capsule *pill = info->mti_pill;
421 const struct lu_env *env = info->mti_env;
422 struct mdt_body *repbody;
423 struct lu_buf *buffer = &info->mti_buf;
427 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
428 RETURN(err_serious(-ENOMEM));
430 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
434 rc = mdt_object_exists(o);
436 /* This object is located on remote node.*/
437 repbody->fid1 = *mdt_object_fid(o);
438 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
442 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
443 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
445 /* If it is dir object and client require MEA, then we got MEA */
446 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
447 reqbody->valid & OBD_MD_MEA) {
448 /* Assumption: MDT_MD size is enough for lmv size. */
449 ma->ma_lmv = buffer->lb_buf;
450 ma->ma_lmv_size = buffer->lb_len;
451 ma->ma_need = MA_LMV | MA_INODE;
453 ma->ma_lmm = buffer->lb_buf;
454 ma->ma_lmm_size = buffer->lb_len;
455 ma->ma_need = MA_LOV | MA_INODE;
458 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
459 reqbody->valid & OBD_MD_FLDIREA &&
460 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
461 /* get default stripe info for this dir. */
462 ma->ma_need |= MA_LOV_DEF;
464 rc = mo_attr_get(env, next, ma);
466 CERROR("getattr error for "DFID": %d\n",
467 PFID(mdt_object_fid(o)), rc);
471 if (likely(ma->ma_valid & MA_INODE))
472 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
476 if (mdt_body_has_lov(la, reqbody)) {
477 if (ma->ma_valid & MA_LOV) {
478 LASSERT(ma->ma_lmm_size);
479 mdt_dump_lmm(D_INFO, ma->ma_lmm);
480 repbody->eadatasize = ma->ma_lmm_size;
481 if (S_ISDIR(la->la_mode))
482 repbody->valid |= OBD_MD_FLDIREA;
484 repbody->valid |= OBD_MD_FLEASIZE;
486 if (ma->ma_valid & MA_LMV) {
487 LASSERT(S_ISDIR(la->la_mode));
488 repbody->eadatasize = ma->ma_lmv_size;
489 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
491 if (!(ma->ma_valid & MA_LOV) && !(ma->ma_valid & MA_LMV)) {
492 repbody->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
494 } else if (S_ISLNK(la->la_mode) &&
495 reqbody->valid & OBD_MD_LINKNAME) {
496 buffer->lb_buf = ma->ma_lmm;
497 buffer->lb_len = reqbody->eadatasize;
498 rc = mo_readlink(env, next, buffer);
499 if (unlikely(rc <= 0)) {
500 CERROR("readlink failed: %d\n", rc);
503 repbody->valid |= OBD_MD_LINKNAME;
504 repbody->eadatasize = rc;
506 ((char*)ma->ma_lmm)[rc - 1] = 0;
507 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
508 (char*)ma->ma_lmm, rc);
513 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
514 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
515 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
516 repbody->valid |= OBD_MD_FLMODEASIZE;
517 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
518 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
519 repbody->max_cookiesize);
522 if (med->med_rmtclient && (reqbody->valid & OBD_MD_FLRMTPERM)) {
523 void *buf = req_capsule_server_get(pill, &RMF_ACL);
525 /* mdt_getattr_lock only */
526 rc = mdt_pack_remote_perm(info, o, buf);
528 repbody->valid &= ~OBD_MD_FLRMTPERM;
529 repbody->aclsize = 0;
532 repbody->valid |= OBD_MD_FLRMTPERM;
533 repbody->aclsize = sizeof(struct mdt_remote_perm);
536 #ifdef CONFIG_FS_POSIX_ACL
537 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
538 (reqbody->valid & OBD_MD_FLACL)) {
539 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
540 buffer->lb_len = req_capsule_get_size(pill,
541 &RMF_ACL, RCL_SERVER);
542 if (buffer->lb_len > 0) {
543 rc = mo_xattr_get(env, next, buffer,
544 XATTR_NAME_ACL_ACCESS);
546 if (rc == -ENODATA) {
547 repbody->aclsize = 0;
548 repbody->valid |= OBD_MD_FLACL;
550 } else if (rc == -EOPNOTSUPP) {
553 CERROR("got acl size: %d\n", rc);
556 repbody->aclsize = rc;
557 repbody->valid |= OBD_MD_FLACL;
564 if ((reqbody->valid & OBD_MD_FLMDSCAPA) &&
565 info->mti_mdt->mdt_opts.mo_mds_capa) {
566 struct lustre_capa *capa;
568 capa = req_capsule_server_get(pill, &RMF_CAPA1);
570 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
571 rc = mo_capa_get(env, next, capa, 0);
574 repbody->valid |= OBD_MD_FLMDSCAPA;
579 static int mdt_renew_capa(struct mdt_thread_info *info)
581 struct mdt_device *mdt = info->mti_mdt;
582 struct mdt_object *obj = info->mti_object;
583 struct mdt_body *body;
584 struct lustre_capa *capa, *c;
588 /* if object doesn't exist, or server has disabled capability,
589 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
592 if (!obj || !mdt->mdt_opts.mo_mds_capa)
595 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
596 LASSERT(body != NULL);
598 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
601 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
605 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
607 body->valid |= OBD_MD_FLOSSCAPA;
611 static int mdt_getattr(struct mdt_thread_info *info)
613 struct mdt_object *obj = info->mti_object;
614 struct req_capsule *pill = info->mti_pill;
615 struct mdt_body *reqbody;
616 struct mdt_body *repbody;
622 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
625 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
626 rc = req_capsule_server_pack(pill);
628 RETURN(err_serious(rc));
629 rc = mdt_renew_capa(info);
630 GOTO(out_shrink, rc);
633 LASSERT(obj != NULL);
634 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
636 mode = lu_object_attr(&obj->mot_obj.mo_lu);
637 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
638 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
639 md_size = reqbody->eadatasize;
641 md_size = info->mti_mdt->mdt_max_mdsize;
643 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
645 rc = req_capsule_server_pack(pill);
646 if (unlikely(rc != 0))
647 RETURN(err_serious(rc));
649 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
650 LASSERT(repbody != NULL);
651 repbody->eadatasize = 0;
652 repbody->aclsize = 0;
654 if (reqbody->valid & OBD_MD_FLRMTPERM)
655 rc = mdt_init_ucred(info, reqbody);
657 rc = mdt_check_ucred(info);
659 GOTO(out_shrink, rc);
661 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
662 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
665 * Don't check capability at all, because rename might getattr for
666 * remote obj, and at that time no capability is available.
668 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
669 rc = mdt_getattr_internal(info, obj);
670 if (reqbody->valid & OBD_MD_FLRMTPERM)
671 mdt_exit_ucred(info);
674 mdt_shrink_reply(info);
678 static int mdt_is_subdir(struct mdt_thread_info *info)
680 struct mdt_object *o = info->mti_object;
681 struct req_capsule *pill = info->mti_pill;
682 const struct mdt_body *body = info->mti_body;
683 struct mdt_body *repbody;
689 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
692 * We save last checked parent fid to @repbody->fid1 for remote
695 LASSERT(fid_is_sane(&body->fid2));
696 LASSERT(mdt_object_exists(o) > 0);
697 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
698 &body->fid2, &repbody->fid1);
699 if (rc == 0 || rc == -EREMOTE)
700 repbody->valid |= OBD_MD_FLID;
705 static int mdt_raw_lookup(struct mdt_thread_info *info,
706 struct mdt_object *parent,
707 const struct lu_name *lname,
708 struct ldlm_reply *ldlm_rep)
710 struct md_object *next = mdt_object_child(info->mti_object);
711 const struct mdt_body *reqbody = info->mti_body;
712 struct lu_fid *child_fid = &info->mti_tmp_fid1;
713 struct mdt_body *repbody;
717 if (reqbody->valid != OBD_MD_FLID)
720 LASSERT(!info->mti_cross_ref);
722 /* Only got the fid of this obj by name */
723 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
726 /* XXX is raw_lookup possible as intent operation? */
729 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
732 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
734 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
737 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
738 repbody->fid1 = *child_fid;
739 repbody->valid = OBD_MD_FLID;
745 * UPDATE lock should be taken against parent, and be release before exit;
746 * child_bits lock should be taken against child, and be returned back:
747 * (1)normal request should release the child lock;
748 * (2)intent request will grant the lock to client.
750 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
751 struct mdt_lock_handle *lhc,
753 struct ldlm_reply *ldlm_rep)
755 struct ptlrpc_request *req = mdt_info_req(info);
756 struct mdt_body *reqbody = NULL;
757 struct mdt_object *parent = info->mti_object;
758 struct mdt_object *child;
759 struct md_object *next = mdt_object_child(parent);
760 struct lu_fid *child_fid = &info->mti_tmp_fid1;
761 struct lu_name *lname = NULL;
764 struct mdt_lock_handle *lhp;
765 struct ldlm_lock *lock;
766 struct ldlm_res_id *res_id;
772 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
773 LASSERT(ergo(is_resent,
774 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
776 LASSERT(parent != NULL);
777 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
779 RETURN(err_serious(-EFAULT));
781 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
783 LASSERT(namelen >= 0);
785 /* XXX: "namelen == 0" is for getattr by fid (OBD_CONNECT_ATTRFID),
786 * otherwise do not allow empty name, that is the name must contain
787 * at least one character and the terminating '\0'*/
789 reqbody =req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
790 LASSERT(fid_is_sane(&reqbody->fid2));
793 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
795 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
798 lname = mdt_name(info->mti_env, (char *)name, namelen);
799 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
801 PFID(mdt_object_fid(parent)), name, ldlm_rep);
804 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
806 rc = mdt_object_exists(parent);
807 if (unlikely(rc == 0)) {
808 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
809 &parent->mot_obj.mo_lu,
810 "Parent doesn't exist!\n");
813 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
814 PFID(mdt_object_fid(parent)));
817 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
825 if (info->mti_cross_ref) {
826 /* Only getattr on the child. Parent is on another node. */
827 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
829 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
830 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
833 /* Do not take lock for resent case. */
834 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
835 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
836 lhc->mlh_reg_lh.cookie);
837 LASSERT(fid_res_name_eq(mdt_object_fid(child),
838 &lock->l_resource->lr_name));
842 mdt_lock_handle_init(lhc);
843 mdt_lock_reg_init(lhc, LCK_PR);
846 * Object's name is on another MDS, no lookup lock is
847 * needed here but update is.
849 child_bits &= ~MDS_INODELOCK_LOOKUP;
850 child_bits |= MDS_INODELOCK_UPDATE;
852 rc = mdt_object_lock(info, child, lhc, child_bits,
856 /* Finally, we can get attr for child. */
857 mdt_set_capainfo(info, 0, mdt_object_fid(child),
859 rc = mdt_getattr_internal(info, child);
860 if (unlikely(rc != 0))
861 mdt_object_unlock(info, child, lhc, 1);
866 /* step 1: lock parent */
867 lhp = &info->mti_lh[MDT_LH_PARENT];
868 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
869 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
872 if (unlikely(rc != 0))
876 /* step 2: lookup child's fid by name */
877 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
882 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
883 GOTO(out_parent, rc);
885 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
887 *child_fid = reqbody->fid2;
888 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
892 *step 3: find the child object by fid & lock it.
893 * regardless if it is local or remote.
895 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
897 if (unlikely(IS_ERR(child)))
898 GOTO(out_parent, rc = PTR_ERR(child));
900 /* Do not take lock for resent case. */
901 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
902 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
903 lhc->mlh_reg_lh.cookie);
905 res_id = &lock->l_resource->lr_name;
906 if (!fid_res_name_eq(mdt_object_fid(child),
907 &lock->l_resource->lr_name)) {
908 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
909 &lock->l_resource->lr_name),
910 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
911 (unsigned long)res_id->name[0],
912 (unsigned long)res_id->name[1],
913 (unsigned long)res_id->name[2],
914 PFID(mdt_object_fid(parent)));
915 CWARN("Although resent, but still not get child lock"
916 "parent:"DFID" child:"DFID"\n",
917 PFID(mdt_object_fid(parent)),
918 PFID(mdt_object_fid(child)));
919 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
927 mdt_lock_handle_init(lhc);
928 mdt_lock_reg_init(lhc, LCK_PR);
930 if (mdt_object_exists(child) == 0) {
931 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
932 &child->mot_obj.mo_lu,
933 "Object doesn't exist!\n");
935 rc = mdt_object_lock(info, child, lhc, child_bits,
938 if (unlikely(rc != 0))
942 /* finally, we can get attr for child. */
943 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
944 rc = mdt_getattr_internal(info, child);
945 if (unlikely(rc != 0)) {
946 mdt_object_unlock(info, child, lhc, 1);
948 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
950 struct mdt_body *repbody;
953 /* Debugging code. */
954 res_id = &lock->l_resource->lr_name;
955 LDLM_DEBUG(lock, "Returning lock to client\n");
956 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
957 &lock->l_resource->lr_name),
958 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
959 (unsigned long)res_id->name[0],
960 (unsigned long)res_id->name[1],
961 (unsigned long)res_id->name[2],
962 PFID(mdt_object_fid(child)));
964 * Pack Size-on-MDS inode attributes to the body if
965 * update lock is given.
967 repbody = req_capsule_server_get(info->mti_pill,
969 ma = &info->mti_attr.ma_attr;
970 if (lock->l_policy_data.l_inodebits.bits &
971 MDS_INODELOCK_UPDATE)
972 mdt_pack_size2body(info, child);
978 mdt_object_put(info->mti_env, child);
980 mdt_object_unlock(info, parent, lhp, 1);
984 /* normal handler: should release the child lock */
985 static int mdt_getattr_name(struct mdt_thread_info *info)
987 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
988 struct mdt_body *reqbody;
989 struct mdt_body *repbody;
993 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
994 LASSERT(reqbody != NULL);
995 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
996 LASSERT(repbody != NULL);
998 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
999 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1000 repbody->eadatasize = 0;
1001 repbody->aclsize = 0;
1003 rc = mdt_init_ucred(info, reqbody);
1005 GOTO(out_shrink, rc);
1007 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1008 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1009 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1010 lhc->mlh_reg_lh.cookie = 0;
1012 mdt_exit_ucred(info);
1015 mdt_shrink_reply(info);
1019 static struct lu_device_operations mdt_lu_ops;
1021 static int lu_device_is_mdt(struct lu_device *d)
1023 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1026 static int mdt_set_info(struct mdt_thread_info *info)
1028 struct ptlrpc_request *req = mdt_info_req(info);
1034 rc = req_capsule_server_pack(info->mti_pill);
1038 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1040 DEBUG_REQ(D_HA, req, "no set_info key");
1044 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1047 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1049 DEBUG_REQ(D_HA, req, "no set_info val");
1053 if (keylen != (sizeof(KEY_READ_ONLY) - 1) ||
1054 memcmp(key, KEY_READ_ONLY, keylen) != 0)
1058 lustre_msg_set_status(req->rq_repmsg, 0);
1060 spin_lock(&req->rq_export->exp_lock);
1062 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1064 req->rq_export->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1065 spin_unlock(&req->rq_export->exp_lock);
1070 static int mdt_connect(struct mdt_thread_info *info)
1073 struct ptlrpc_request *req;
1075 req = mdt_info_req(info);
1076 rc = target_handle_connect(req);
1078 LASSERT(req->rq_export != NULL);
1079 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1080 rc = mdt_init_idmap(info);
1082 /* if mdt_init_idmap failed, revocation for connect */
1083 obd_disconnect(class_export_get(req->rq_export));
1085 rc = err_serious(rc);
1089 static int mdt_disconnect(struct mdt_thread_info *info)
1094 rc = target_handle_disconnect(mdt_info_req(info));
1096 rc = err_serious(rc);
1100 static int mdt_sendpage(struct mdt_thread_info *info,
1101 struct lu_rdpg *rdpg)
1103 struct ptlrpc_request *req = mdt_info_req(info);
1104 struct ptlrpc_bulk_desc *desc;
1105 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1112 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1117 for (i = 0, tmpcount = rdpg->rp_count;
1118 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1119 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1120 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1123 LASSERT(desc->bd_nob == rdpg->rp_count);
1124 rc = ptlrpc_start_bulk_transfer(desc);
1126 GOTO(free_desc, rc);
1128 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1129 GOTO(abort_bulk, rc);
1131 *lwi = LWI_TIMEOUT(obd_timeout * HZ / 4, NULL, NULL);
1132 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), lwi);
1133 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1136 if (desc->bd_success &&
1137 desc->bd_nob_transferred == rdpg->rp_count)
1138 GOTO(free_desc, rc);
1140 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
1143 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1144 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1145 desc->bd_nob_transferred, rdpg->rp_count,
1146 req->rq_export->exp_client_uuid.uuid,
1147 req->rq_export->exp_connection->c_remote_uuid.uuid);
1149 class_fail_export(req->rq_export);
1153 ptlrpc_abort_bulk(desc);
1155 ptlrpc_free_bulk(desc);
1159 #ifdef HAVE_SPLIT_SUPPORT
1161 * Retrieve dir entry from the page and insert it to the slave object, actually,
1162 * this should be in osd layer, but since it will not in the final product, so
1163 * just do it here and do not define more moo api anymore for this.
1165 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1168 struct mdt_object *object = info->mti_object;
1169 struct lu_fid *lf = &info->mti_tmp_fid2;
1170 struct md_attr *ma = &info->mti_attr;
1171 struct lu_dirpage *dp;
1172 struct lu_dirent *ent;
1173 int rc = 0, offset = 0;
1176 /* Make sure we have at least one entry. */
1181 * Disable trans for this name insert, since it will include many trans
1184 info->mti_no_need_trans = 1;
1186 * When write_dir_page, no need update parent's ctime,
1187 * and no permission check for name_insert.
1189 ma->ma_attr.la_ctime = 0;
1190 ma->ma_attr.la_valid = LA_MODE;
1191 ma->ma_valid = MA_INODE;
1194 dp = page_address(page);
1195 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1197 for (ent = lu_dirent_start(dp); ent != NULL;
1198 ent = lu_dirent_next(ent)) {
1199 struct lu_name *lname;
1202 if (le16_to_cpu(ent->lde_namelen) == 0)
1205 fid_le_to_cpu(lf, &ent->lde_fid);
1206 if (le32_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1207 ma->ma_attr.la_mode = S_IFDIR;
1209 ma->ma_attr.la_mode = 0;
1210 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1212 GOTO(out, rc = -ENOMEM);
1214 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1215 lname = mdt_name(info->mti_env, name,
1216 le16_to_cpu(ent->lde_namelen) + 1);
1217 ma->ma_attr_flags |= MDS_PERM_BYPASS;
1218 rc = mdo_name_insert(info->mti_env,
1219 md_object_next(&object->mot_obj),
1221 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1223 CERROR("Can't insert %*.*s, rc %d\n",
1224 le16_to_cpu(ent->lde_namelen),
1225 le16_to_cpu(ent->lde_namelen),
1230 offset += lu_dirent_size(ent);
1240 static int mdt_bulk_timeout(void *data)
1244 CERROR("mdt bulk transfer timeout \n");
1249 static int mdt_writepage(struct mdt_thread_info *info)
1251 struct ptlrpc_request *req = mdt_info_req(info);
1252 struct mdt_body *reqbody;
1253 struct l_wait_info *lwi;
1254 struct ptlrpc_bulk_desc *desc;
1260 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1261 if (reqbody == NULL)
1262 RETURN(err_serious(-EFAULT));
1264 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1266 RETURN(err_serious(-ENOMEM));
1268 /* allocate the page for the desc */
1269 page = cfs_alloc_page(CFS_ALLOC_STD);
1271 GOTO(desc_cleanup, rc = -ENOMEM);
1273 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1274 (int)reqbody->size, (int)reqbody->nlink);
1276 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1277 (int)reqbody->nlink);
1280 * Check if client was evicted while we were doing i/o before touching
1285 GOTO(cleanup_page, rc = -ENOMEM);
1287 if (desc->bd_export->exp_failed)
1290 rc = ptlrpc_start_bulk_transfer (desc);
1292 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * HZ / 4, HZ,
1293 mdt_bulk_timeout, desc);
1294 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1295 desc->bd_export->exp_failed, lwi);
1296 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1297 if (rc == -ETIMEDOUT) {
1298 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1299 ptlrpc_abort_bulk(desc);
1300 } else if (desc->bd_export->exp_failed) {
1301 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1303 ptlrpc_abort_bulk(desc);
1304 } else if (!desc->bd_success ||
1305 desc->bd_nob_transferred != desc->bd_nob) {
1306 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1308 "truncated" : "network error on",
1309 desc->bd_nob_transferred, desc->bd_nob);
1310 /* XXX should this be a different errno? */
1314 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1317 GOTO(cleanup_lwi, rc);
1318 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1323 __cfs_free_page(page);
1325 ptlrpc_free_bulk(desc);
1330 static int mdt_readpage(struct mdt_thread_info *info)
1332 struct mdt_object *object = info->mti_object;
1333 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1334 struct mdt_body *reqbody;
1335 struct mdt_body *repbody;
1340 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1341 RETURN(err_serious(-ENOMEM));
1343 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1344 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1345 if (reqbody == NULL || repbody == NULL)
1346 RETURN(err_serious(-EFAULT));
1349 * prepare @rdpg before calling lower layers and transfer itself. Here
1350 * reqbody->size contains offset of where to start to read and
1351 * reqbody->nlink contains number bytes to read.
1353 rdpg->rp_hash = reqbody->size;
1354 if ((__u64)rdpg->rp_hash != reqbody->size) {
1355 CERROR("Invalid hash: %#llx != %#llx\n",
1356 (__u64)rdpg->rp_hash, reqbody->size);
1359 rdpg->rp_count = reqbody->nlink;
1360 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1361 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1362 if (rdpg->rp_pages == NULL)
1365 for (i = 0; i < rdpg->rp_npages; ++i) {
1366 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1367 if (rdpg->rp_pages[i] == NULL)
1368 GOTO(free_rdpg, rc = -ENOMEM);
1371 /* call lower layers to fill allocated pages with directory data */
1372 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1374 GOTO(free_rdpg, rc);
1376 /* send pages to client */
1377 rc = mdt_sendpage(info, rdpg);
1382 for (i = 0; i < rdpg->rp_npages; i++)
1383 if (rdpg->rp_pages[i] != NULL)
1384 __cfs_free_page(rdpg->rp_pages[i]);
1385 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1387 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1393 static int mdt_reint_internal(struct mdt_thread_info *info,
1394 struct mdt_lock_handle *lhc,
1397 struct req_capsule *pill = info->mti_pill;
1398 struct mdt_device *mdt = info->mti_mdt;
1399 struct mdt_body *repbody;
1404 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1405 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1406 mdt->mdt_max_mdsize);
1407 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1408 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1409 mdt->mdt_max_cookiesize);
1411 rc = req_capsule_server_pack(pill);
1413 CERROR("Can't pack response, rc %d\n", rc);
1414 RETURN(err_serious(rc));
1417 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1418 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1420 repbody->eadatasize = 0;
1421 repbody->aclsize = 0;
1424 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1425 GOTO(out_shrink, rc = err_serious(-EFAULT));
1427 rc = mdt_reint_unpack(info, op);
1429 CERROR("Can't unpack reint, rc %d\n", rc);
1430 GOTO(out_shrink, rc = err_serious(rc));
1433 rc = mdt_init_ucred_reint(info);
1435 GOTO(out_shrink, rc);
1437 rc = mdt_fix_attr_ucred(info, op);
1439 GOTO(out_ucred, rc = err_serious(rc));
1441 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1442 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1443 GOTO(out_ucred, rc);
1445 rc = mdt_reint_rec(info, lhc);
1448 mdt_exit_ucred(info);
1450 mdt_shrink_reply(info);
1454 static long mdt_reint_opcode(struct mdt_thread_info *info,
1455 const struct req_format **fmt)
1457 struct mdt_rec_reint *rec;
1460 opc = err_serious(-EFAULT);
1461 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1463 opc = rec->rr_opcode;
1464 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1465 if (opc < REINT_MAX && fmt[opc] != NULL)
1466 req_capsule_extend(info->mti_pill, fmt[opc]);
1468 CERROR("Unsupported opc: %ld\n", opc);
1469 opc = err_serious(opc);
1475 static int mdt_reint(struct mdt_thread_info *info)
1480 static const struct req_format *reint_fmts[REINT_MAX] = {
1481 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1482 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1483 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1484 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1485 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1486 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1487 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1492 opc = mdt_reint_opcode(info, reint_fmts);
1495 * No lock possible here from client to pass it to reint code
1498 rc = mdt_reint_internal(info, NULL, opc);
1503 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1507 /* TODO these two methods not available now. */
1509 /* this should sync the whole device */
1510 static int mdt_device_sync(struct mdt_thread_info *info)
1515 /* this should sync this object */
1516 static int mdt_object_sync(struct mdt_thread_info *info)
1521 static int mdt_sync(struct mdt_thread_info *info)
1523 struct req_capsule *pill = info->mti_pill;
1524 struct mdt_body *body;
1528 /* The fid may be zero, so we req_capsule_set manually */
1529 req_capsule_set(pill, &RQF_MDS_SYNC);
1531 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1533 RETURN(err_serious(-EINVAL));
1535 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1536 RETURN(err_serious(-ENOMEM));
1538 if (fid_seq(&body->fid1) == 0) {
1539 /* sync the whole device */
1540 rc = req_capsule_server_pack(pill);
1542 rc = mdt_device_sync(info);
1544 rc = err_serious(rc);
1546 /* sync an object */
1547 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1549 rc = mdt_object_sync(info);
1551 struct md_object *next;
1552 const struct lu_fid *fid;
1553 struct lu_attr *la = &info->mti_attr.ma_attr;
1555 next = mdt_object_child(info->mti_object);
1556 info->mti_attr.ma_need = MA_INODE;
1557 info->mti_attr.ma_valid = 0;
1558 rc = mo_attr_get(info->mti_env, next,
1561 body = req_capsule_server_get(pill,
1563 fid = mdt_object_fid(info->mti_object);
1564 mdt_pack_attr2body(info, body, la, fid);
1568 rc = err_serious(rc);
1573 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1575 return err_serious(-EOPNOTSUPP);
1578 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1580 return err_serious(-EOPNOTSUPP);
1584 * OBD PING and other handlers.
1586 static int mdt_obd_ping(struct mdt_thread_info *info)
1591 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1593 rc = target_handle_ping(mdt_info_req(info));
1595 rc = err_serious(rc);
1599 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1601 return err_serious(-EOPNOTSUPP);
1604 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1606 return err_serious(-EOPNOTSUPP);
1613 static struct ldlm_callback_suite cbs = {
1614 .lcs_completion = ldlm_server_completion_ast,
1615 .lcs_blocking = ldlm_server_blocking_ast,
1619 static int mdt_enqueue(struct mdt_thread_info *info)
1621 struct ptlrpc_request *req;
1626 * info->mti_dlm_req already contains swapped and (if necessary)
1627 * converted dlm request.
1629 LASSERT(info->mti_dlm_req != NULL);
1631 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE)) {
1632 info->mti_fail_id = OBD_FAIL_LDLM_ENQUEUE;
1636 req = mdt_info_req(info);
1639 * Lock without inodebits makes no sense and will oops later in
1640 * ldlm. Let's check it now to see if we have wrong lock from client or
1641 * bits get corrupted somewhere in mdt_intent_policy().
1643 req_bits = info->mti_dlm_req->lock_desc.l_policy_data.l_inodebits.bits;
1644 /* This is disabled because we need to support liblustre flock.
1645 * LASSERT(req_bits != 0);
1648 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
1649 req, info->mti_dlm_req, &cbs);
1650 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
1651 return rc ? err_serious(rc) : req->rq_status;
1654 static int mdt_convert(struct mdt_thread_info *info)
1657 struct ptlrpc_request *req;
1659 LASSERT(info->mti_dlm_req);
1660 req = mdt_info_req(info);
1661 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
1662 return rc ? err_serious(rc) : req->rq_status;
1665 static int mdt_bl_callback(struct mdt_thread_info *info)
1667 CERROR("bl callbacks should not happen on MDS\n");
1669 return err_serious(-EOPNOTSUPP);
1672 static int mdt_cp_callback(struct mdt_thread_info *info)
1674 CERROR("cp callbacks should not happen on MDS\n");
1676 return err_serious(-EOPNOTSUPP);
1680 * sec context handlers
1682 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
1686 rc = mdt_handle_idmap(info);
1689 struct ptlrpc_request *req = mdt_info_req(info);
1692 opc = lustre_msg_get_opc(req->rq_reqmsg);
1693 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
1694 sptlrpc_svc_ctx_invalidate(req);
1700 static struct mdt_object *mdt_obj(struct lu_object *o)
1702 LASSERT(lu_device_is_mdt(o->lo_dev));
1703 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
1706 struct mdt_object *mdt_object_find(const struct lu_env *env,
1707 struct mdt_device *d,
1708 const struct lu_fid *f)
1710 struct lu_object *o;
1711 struct mdt_object *m;
1714 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
1715 o = lu_object_find(env, d->mdt_md_dev.md_lu_dev.ld_site, f);
1716 if (unlikely(IS_ERR(o)))
1717 m = (struct mdt_object *)o;
1723 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
1724 struct mdt_lock_handle *lh, __u64 ibits, int locality)
1726 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
1727 ldlm_policy_data_t *policy = &info->mti_policy;
1728 struct ldlm_res_id *res_id = &info->mti_res_id;
1732 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
1733 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
1734 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
1735 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
1737 if (mdt_object_exists(o) < 0) {
1738 if (locality == MDT_CROSS_LOCK) {
1739 /* cross-ref object fix */
1740 ibits &= ~MDS_INODELOCK_UPDATE;
1741 ibits |= MDS_INODELOCK_LOOKUP;
1743 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
1744 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
1746 /* No PDO lock on remote object */
1747 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
1750 memset(policy, 0, sizeof(*policy));
1751 fid_build_reg_res_name(mdt_object_fid(o), res_id);
1754 * Take PDO lock on whole directory and build correct @res_id for lock
1755 * on part of directory.
1757 if (lh->mlh_pdo_hash != 0) {
1758 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
1759 mdt_lock_pdo_mode(info, o, lh);
1760 if (lh->mlh_pdo_mode != LCK_NL) {
1762 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
1763 * is never going to be sent to client and we do not
1764 * want it slowed down due to possible cancels.
1766 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
1767 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
1768 policy, res_id, LDLM_FL_ATOMIC_CB);
1774 * Finish res_id initializing by name hash marking patr of
1775 * directory which is taking modification.
1777 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
1780 policy->l_inodebits.bits = ibits;
1783 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
1784 * going to be sent to client. If it is - mdt_intent_policy() path will
1785 * fix it up and turns FL_LOCAL flag off.
1787 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
1788 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB);
1793 if (lh->mlh_type == MDT_PDO_LOCK) {
1794 /* check for exists after object is locked */
1795 if (mdt_object_exists(o) == 0) {
1796 /* Non-existent object shouldn't have PDO lock */
1799 /* Non-dir object shouldn't have PDO lock */
1800 LASSERT(S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)));
1805 mdt_object_unlock(info, o, lh, 1);
1812 * Just call ldlm_lock_decref() if decref, else we only call ptlrpc_save_lock()
1813 * to save this lock in req. when transaction committed, req will be released,
1814 * and lock will, too.
1816 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
1817 struct mdt_lock_handle *lh, int decref)
1819 struct ptlrpc_request *req = mdt_info_req(info);
1822 if (lustre_handle_is_used(&lh->mlh_pdo_lh)) {
1823 /* Do not save PDO locks to request, just decref. */
1824 mdt_fid_unlock(&lh->mlh_pdo_lh,
1826 lh->mlh_pdo_lh.cookie = 0ull;
1829 if (lustre_handle_is_used(&lh->mlh_reg_lh)) {
1831 mdt_fid_unlock(&lh->mlh_reg_lh,
1834 ptlrpc_save_lock(req, &lh->mlh_reg_lh,
1837 lh->mlh_reg_lh.cookie = 0ull;
1843 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
1844 const struct lu_fid *f,
1845 struct mdt_lock_handle *lh,
1848 struct mdt_object *o;
1850 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
1854 rc = mdt_object_lock(info, o, lh, ibits,
1857 mdt_object_put(info->mti_env, o);
1864 void mdt_object_unlock_put(struct mdt_thread_info * info,
1865 struct mdt_object * o,
1866 struct mdt_lock_handle *lh,
1869 mdt_object_unlock(info, o, lh, decref);
1870 mdt_object_put(info->mti_env, o);
1873 static struct mdt_handler *mdt_handler_find(__u32 opc,
1874 struct mdt_opc_slice *supported)
1876 struct mdt_opc_slice *s;
1877 struct mdt_handler *h;
1880 for (s = supported; s->mos_hs != NULL; s++) {
1881 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
1882 h = s->mos_hs + (opc - s->mos_opc_start);
1883 if (likely(h->mh_opc != 0))
1884 LASSERT(h->mh_opc == opc);
1886 h = NULL; /* unsupported opc */
1893 static int mdt_lock_resname_compat(struct mdt_device *m,
1894 struct ldlm_request *req)
1896 /* XXX something... later. */
1900 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
1902 /* XXX something... later. */
1907 * Generic code handling requests that have struct mdt_body passed in:
1909 * - extract mdt_body from request and save it in @info, if present;
1911 * - create lu_object, corresponding to the fid in mdt_body, and save it in
1914 * - if HABEO_CORPUS flag is set for this request type check whether object
1915 * actually exists on storage (lu_object_exists()).
1918 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
1920 const struct mdt_body *body;
1921 struct mdt_object *obj;
1922 const struct lu_env *env;
1923 struct req_capsule *pill;
1927 env = info->mti_env;
1928 pill = info->mti_pill;
1930 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1934 if (!(body->valid & OBD_MD_FLID))
1937 if (!fid_is_sane(&body->fid1)) {
1938 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
1943 * Do not get size or any capa fields before we check that request
1944 * contains capa actually. There are some requests which do not, for
1945 * instance MDS_IS_SUBDIR.
1947 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
1948 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1949 mdt_set_capainfo(info, 0, &body->fid1,
1950 req_capsule_client_get(pill, &RMF_CAPA1));
1952 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
1954 if ((flags & HABEO_CORPUS) &&
1955 !mdt_object_exists(obj)) {
1956 mdt_object_put(env, obj);
1957 /* for capability renew ENOENT will be handled in
1959 if (body->valid & OBD_MD_FLOSSCAPA)
1964 info->mti_object = obj;
1973 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
1975 struct req_capsule *pill = info->mti_pill;
1979 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
1980 rc = mdt_body_unpack(info, flags);
1984 if (rc == 0 && (flags & HABEO_REFERO)) {
1985 struct mdt_device *mdt = info->mti_mdt;
1988 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1989 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1990 mdt->mdt_max_mdsize);
1991 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1992 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1993 mdt->mdt_max_cookiesize);
1995 rc = req_capsule_server_pack(pill);
2000 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2002 struct md_device *next = m->mdt_child;
2004 return next->md_ops->mdo_init_capa_ctxt(env, next,
2005 m->mdt_opts.mo_mds_capa,
2006 m->mdt_capa_timeout,
2012 * Invoke handler for this request opc. Also do necessary preprocessing
2013 * (according to handler ->mh_flags), and post-processing (setting of
2014 * ->last_{xid,committed}).
2016 static int mdt_req_handle(struct mdt_thread_info *info,
2017 struct mdt_handler *h, struct ptlrpc_request *req)
2019 int rc, serious = 0;
2024 LASSERT(h->mh_act != NULL);
2025 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2026 LASSERT(current->journal_info == NULL);
2029 * Mask out OBD_FAIL_ONCE, because that will stop
2030 * correct handling of failed req later in ldlm due to doing
2031 * obd_fail_loc |= OBD_FAIL_ONCE without actually
2032 * correct actions like it is done in target_send_reply_msg().
2034 if (h->mh_fail_id != 0) {
2036 * Set to info->mti_fail_id to handler fail_id, it will be used
2037 * later, and better than use default fail_id.
2039 if (OBD_FAIL_CHECK_RESET(h->mh_fail_id && OBD_FAIL_MASK_LOC,
2040 h->mh_fail_id & ~OBD_FAILED)) {
2041 info->mti_fail_id = h->mh_fail_id;
2047 flags = h->mh_flags;
2048 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2050 if (h->mh_fmt != NULL) {
2051 req_capsule_set(info->mti_pill, h->mh_fmt);
2052 rc = mdt_unpack_req_pack_rep(info, flags);
2055 if (rc == 0 && flags & MUTABOR &&
2056 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2057 /* should it be rq_status? */
2060 if (rc == 0 && flags & HABEO_CLAVIS) {
2061 struct ldlm_request *dlm_req;
2063 LASSERT(h->mh_fmt != NULL);
2065 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2066 if (dlm_req != NULL) {
2067 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2068 rc = mdt_lock_resname_compat(info->mti_mdt,
2070 info->mti_dlm_req = dlm_req;
2076 /* capability setting changed via /proc, needs reinitialize ctxt */
2077 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2078 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2079 info->mti_mdt->mdt_capa_conf = 0;
2082 if (likely(rc == 0)) {
2084 * Process request, there can be two types of rc:
2085 * 1) errors with msg unpack/pack, other failures outside the
2086 * operation itself. This is counted as serious errors;
2087 * 2) errors during fs operation, should be placed in rq_status
2090 rc = h->mh_act(info);
2091 serious = is_serious(rc);
2092 rc = clear_serious(rc);
2096 req->rq_status = rc;
2099 * ELDLM_* codes which > 0 should be in rq_status only as well as
2100 * all non-serious errors.
2102 if (rc > 0 || !serious)
2105 LASSERT(current->journal_info == NULL);
2107 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2108 info->mti_mdt->mdt_opts.mo_compat_resname) {
2109 struct ldlm_reply *dlmrep;
2111 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2113 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2116 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2117 if (likely(rc == 0 && h->mh_opc != MDS_DISCONNECT))
2118 target_committed_to_req(req);
2120 if (unlikely((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
2121 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2122 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2129 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2131 lh->mlh_type = MDT_NUL_LOCK;
2132 lh->mlh_reg_lh.cookie = 0ull;
2133 lh->mlh_reg_mode = LCK_MINMODE;
2134 lh->mlh_pdo_lh.cookie = 0ull;
2135 lh->mlh_pdo_mode = LCK_MINMODE;
2138 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2140 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2141 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2145 * Initialize fields of struct mdt_thread_info. Other fields are left in
2146 * uninitialized state, because it's too expensive to zero out whole
2147 * mdt_thread_info (> 1K) on each request arrival.
2149 static void mdt_thread_info_init(struct ptlrpc_request *req,
2150 struct mdt_thread_info *info)
2153 struct md_capainfo *ci;
2155 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2156 info->mti_pill = &req->rq_pill;
2159 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2160 mdt_lock_handle_init(&info->mti_lh[i]);
2162 /* mdt device: it can be NULL while CONNECT */
2163 if (req->rq_export) {
2164 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2165 info->mti_exp = req->rq_export;
2167 info->mti_mdt = NULL;
2168 info->mti_env = req->rq_svc_thread->t_env;
2169 ci = md_capainfo(info->mti_env);
2170 memset(ci, 0, sizeof *ci);
2172 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2173 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2175 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2176 info->mti_body = NULL;
2177 info->mti_object = NULL;
2178 info->mti_dlm_req = NULL;
2179 info->mti_has_trans = 0;
2180 info->mti_no_need_trans = 0;
2181 info->mti_cross_ref = 0;
2182 info->mti_opdata = 0;
2184 /* To not check for split by default. */
2185 info->mti_spec.sp_ck_split = 0;
2188 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2192 req_capsule_fini(info->mti_pill);
2193 if (info->mti_object != NULL) {
2194 mdt_object_put(info->mti_env, info->mti_object);
2195 info->mti_object = NULL;
2197 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2198 mdt_lock_handle_fini(&info->mti_lh[i]);
2199 info->mti_env = NULL;
2203 extern int mds_filter_recovery_request(struct ptlrpc_request *req,
2204 struct obd_device *obd, int *process);
2206 * Handle recovery. Return:
2207 * +1: continue request processing;
2208 * -ve: abort immediately with the given error code;
2209 * 0: send reply with error code in req->rq_status;
2211 static int mdt_recovery(struct mdt_thread_info *info)
2213 struct ptlrpc_request *req = mdt_info_req(info);
2215 struct obd_device *obd;
2219 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2222 case SEC_CTX_INIT_CONT:
2228 rc = mdt_handle_idmap(info);
2237 if (unlikely(req->rq_export == NULL)) {
2238 CERROR("operation %d on unconnected MDS from %s\n",
2239 lustre_msg_get_opc(req->rq_reqmsg),
2240 libcfs_id2str(req->rq_peer));
2241 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2242 * mds_A will get -ENOTCONN(especially for ping req),
2243 * which will cause that mds_A deactive timeout, then when
2244 * mds_A cleanup, the cleanup process will be suspended since
2245 * deactive timeout is not zero.
2247 req->rq_status = -ENOTCONN;
2248 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2252 /* sanity check: if the xid matches, the request must be marked as a
2253 * resent or replayed */
2254 if (req_xid_is_last(req)) {
2255 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2256 (MSG_RESENT | MSG_REPLAY))) {
2257 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2258 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2259 lustre_msg_get_flags(req->rq_reqmsg));
2261 req->rq_status = -ENOTCONN;
2266 /* else: note the opposite is not always true; a RESENT req after a
2267 * failover will usually not match the last_xid, since it was likely
2268 * never committed. A REPLAYed request will almost never match the
2269 * last xid, however it could for a committed, but still retained,
2272 obd = req->rq_export->exp_obd;
2274 /* Check for aborted recovery... */
2275 spin_lock_bh(&obd->obd_processing_task_lock);
2276 recovering = obd->obd_recovering;
2277 spin_unlock_bh(&obd->obd_processing_task_lock);
2278 if (unlikely(recovering)) {
2281 DEBUG_REQ(D_INFO, req, "Got new replay");
2282 rc = mds_filter_recovery_request(req, obd, &should_process);
2283 if (rc != 0 || !should_process)
2285 else if (should_process < 0) {
2286 req->rq_status = should_process;
2287 rc = ptlrpc_error(req);
2294 static int mdt_reply(struct ptlrpc_request *req, int rc,
2295 struct mdt_thread_info *info)
2300 if (req->rq_reply_state == NULL && rc == 0) {
2301 req->rq_status = rc;
2302 lustre_pack_reply(req, 1, NULL, NULL);
2305 target_send_reply(req, rc, info->mti_fail_id);
2310 extern int mds_msg_check_version(struct lustre_msg *msg);
2312 static int mdt_handle0(struct ptlrpc_request *req,
2313 struct mdt_thread_info *info,
2314 struct mdt_opc_slice *supported)
2316 struct mdt_handler *h;
2317 struct lustre_msg *msg;
2322 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2325 LASSERT(current->journal_info == NULL);
2327 msg = req->rq_reqmsg;
2328 rc = mds_msg_check_version(msg);
2329 if (likely(rc == 0)) {
2330 rc = mdt_recovery(info);
2331 if (likely(rc == +1)) {
2332 h = mdt_handler_find(lustre_msg_get_opc(msg),
2334 if (likely(h != NULL)) {
2335 rc = mdt_req_handle(info, h, req);
2336 rc = mdt_reply(req, rc, info);
2338 CERROR("The unsupported opc: 0x%x\n", lustre_msg_get_opc(msg) );
2339 req->rq_status = -ENOTSUPP;
2340 rc = ptlrpc_error(req);
2345 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2350 * MDT handler function called by ptlrpc service thread when request comes.
2352 * XXX common "target" functionality should be factored into separate module
2353 * shared by mdt, ost and stand-alone services like fld.
2355 static int mdt_handle_common(struct ptlrpc_request *req,
2356 struct mdt_opc_slice *supported)
2359 struct mdt_thread_info *info;
2363 env = req->rq_svc_thread->t_env;
2364 LASSERT(env != NULL);
2365 LASSERT(env->le_ses != NULL);
2366 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2367 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2368 LASSERT(info != NULL);
2370 mdt_thread_info_init(req, info);
2372 rc = mdt_handle0(req, info, supported);
2374 mdt_thread_info_fini(info);
2379 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
2382 int mdt_recovery_handle(struct ptlrpc_request *req)
2387 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2389 rc = mdt_handle_common(req, mdt_fld_handlers);
2392 rc = mdt_handle_common(req, mdt_seq_handlers);
2395 rc = mdt_handle_common(req, mdt_regular_handlers);
2402 static int mdt_regular_handle(struct ptlrpc_request *req)
2404 return mdt_handle_common(req, mdt_regular_handlers);
2407 static int mdt_readpage_handle(struct ptlrpc_request *req)
2409 return mdt_handle_common(req, mdt_readpage_handlers);
2412 static int mdt_xmds_handle(struct ptlrpc_request *req)
2414 return mdt_handle_common(req, mdt_xmds_handlers);
2417 static int mdt_mdsc_handle(struct ptlrpc_request *req)
2419 return mdt_handle_common(req, mdt_seq_handlers);
2422 static int mdt_mdss_handle(struct ptlrpc_request *req)
2424 return mdt_handle_common(req, mdt_seq_handlers);
2427 static int mdt_dtss_handle(struct ptlrpc_request *req)
2429 return mdt_handle_common(req, mdt_seq_handlers);
2432 static int mdt_fld_handle(struct ptlrpc_request *req)
2434 return mdt_handle_common(req, mdt_fld_handlers);
2450 static int mdt_intent_getattr(enum mdt_it_code opcode,
2451 struct mdt_thread_info *info,
2452 struct ldlm_lock **,
2454 static int mdt_intent_reint(enum mdt_it_code opcode,
2455 struct mdt_thread_info *info,
2456 struct ldlm_lock **,
2459 static struct mdt_it_flavor {
2460 const struct req_format *it_fmt;
2462 int (*it_act)(enum mdt_it_code ,
2463 struct mdt_thread_info *,
2464 struct ldlm_lock **,
2467 } mdt_it_flavor[] = {
2469 .it_fmt = &RQF_LDLM_INTENT,
2470 /*.it_flags = HABEO_REFERO,*/
2472 .it_act = mdt_intent_reint,
2473 .it_reint = REINT_OPEN
2476 .it_fmt = &RQF_LDLM_INTENT,
2477 .it_flags = MUTABOR,
2478 .it_act = mdt_intent_reint,
2479 .it_reint = REINT_OPEN
2482 .it_fmt = &RQF_LDLM_INTENT,
2483 .it_flags = MUTABOR,
2484 .it_act = mdt_intent_reint,
2485 .it_reint = REINT_CREATE
2487 [MDT_IT_GETATTR] = {
2488 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2489 .it_flags = HABEO_REFERO,
2490 .it_act = mdt_intent_getattr
2492 [MDT_IT_READDIR] = {
2498 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2499 .it_flags = HABEO_REFERO,
2500 .it_act = mdt_intent_getattr
2503 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2504 .it_flags = MUTABOR,
2506 .it_reint = REINT_UNLINK
2510 .it_flags = MUTABOR,
2513 [MDT_IT_GETXATTR] = {
2520 int mdt_intent_lock_replace(struct mdt_thread_info *info,
2521 struct ldlm_lock **lockp,
2522 struct ldlm_lock *new_lock,
2523 struct mdt_lock_handle *lh,
2526 struct ptlrpc_request *req = mdt_info_req(info);
2527 struct ldlm_lock *lock = *lockp;
2530 * Get new lock only for cases when possible resent did not find any
2533 if (new_lock == NULL)
2534 new_lock = ldlm_handle2lock(&lh->mlh_reg_lh);
2536 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2537 lh->mlh_reg_lh.cookie = 0;
2541 LASSERTF(new_lock != NULL,
2542 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2545 * If we've already given this lock to a client once, then we should
2546 * have no readers or writers. Otherwise, we should have one reader
2547 * _or_ writer ref (which will be zeroed below) before returning the
2550 if (new_lock->l_export == req->rq_export) {
2551 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2553 LASSERT(new_lock->l_export == NULL);
2554 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2559 if (new_lock->l_export == req->rq_export) {
2561 * Already gave this to the client, which means that we
2562 * reconstructed a reply.
2564 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2566 lh->mlh_reg_lh.cookie = 0;
2567 RETURN(ELDLM_LOCK_REPLACED);
2570 /* This lock might already be given to the client by an resent req,
2571 * in this case we should return ELDLM_LOCK_ABORTED,
2572 * so we should check led_held_locks here, but it will affect
2573 * performance, FIXME
2575 /* Fixup the lock to be given to the client */
2576 lock_res_and_lock(new_lock);
2577 new_lock->l_readers = 0;
2578 new_lock->l_writers = 0;
2580 new_lock->l_export = class_export_get(req->rq_export);
2581 spin_lock(&req->rq_export->exp_ldlm_data.led_lock);
2582 list_add(&new_lock->l_export_chain,
2583 &new_lock->l_export->exp_ldlm_data.led_held_locks);
2584 spin_unlock(&req->rq_export->exp_ldlm_data.led_lock);
2586 new_lock->l_blocking_ast = lock->l_blocking_ast;
2587 new_lock->l_completion_ast = lock->l_completion_ast;
2588 new_lock->l_remote_handle = lock->l_remote_handle;
2589 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2591 unlock_res_and_lock(new_lock);
2592 LDLM_LOCK_PUT(new_lock);
2593 lh->mlh_reg_lh.cookie = 0;
2595 RETURN(ELDLM_LOCK_REPLACED);
2598 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
2599 struct ldlm_lock *new_lock,
2600 struct ldlm_lock **old_lock,
2601 struct mdt_lock_handle *lh)
2603 struct ptlrpc_request *req = mdt_info_req(info);
2604 struct obd_export *exp = req->rq_export;
2605 struct lustre_handle remote_hdl;
2606 struct ldlm_request *dlmreq;
2607 struct list_head *iter;
2609 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2612 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2613 remote_hdl = dlmreq->lock_handle[0];
2615 spin_lock(&exp->exp_ldlm_data.led_lock);
2616 list_for_each(iter, &exp->exp_ldlm_data.led_held_locks) {
2617 struct ldlm_lock *lock;
2618 lock = list_entry(iter, struct ldlm_lock, l_export_chain);
2619 if (lock == new_lock)
2621 if (lock->l_remote_handle.cookie == remote_hdl.cookie) {
2622 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
2623 lh->mlh_reg_mode = lock->l_granted_mode;
2625 LDLM_DEBUG(lock, "restoring lock cookie");
2626 DEBUG_REQ(D_DLMTRACE, req,
2627 "restoring lock cookie "LPX64,
2628 lh->mlh_reg_lh.cookie);
2630 *old_lock = LDLM_LOCK_GET(lock);
2631 spin_unlock(&exp->exp_ldlm_data.led_lock);
2635 spin_unlock(&exp->exp_ldlm_data.led_lock);
2638 * If the xid matches, then we know this is a resent request, and allow
2639 * it. (It's probably an OPEN, for which we don't send a lock.
2641 if (req_xid_is_last(req))
2645 * This remote handle isn't enqueued, so we never received or processed
2646 * this request. Clear MSG_RESENT, because it can be handled like any
2647 * normal request now.
2649 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2651 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
2655 static int mdt_intent_getattr(enum mdt_it_code opcode,
2656 struct mdt_thread_info *info,
2657 struct ldlm_lock **lockp,
2660 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
2661 struct ldlm_lock *new_lock = NULL;
2663 struct ldlm_reply *ldlm_rep;
2664 struct ptlrpc_request *req;
2665 struct mdt_body *reqbody;
2666 struct mdt_body *repbody;
2670 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2673 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2676 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
2677 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
2678 repbody->eadatasize = 0;
2679 repbody->aclsize = 0;
2683 child_bits = MDS_INODELOCK_LOOKUP;
2685 case MDT_IT_GETATTR:
2686 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
2689 CERROR("Unhandled till now");
2690 GOTO(out_shrink, rc = -EINVAL);
2693 rc = mdt_init_ucred(info, reqbody);
2695 GOTO(out_shrink, rc);
2697 req = info->mti_pill->rc_req;
2698 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2699 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
2701 /* Get lock from request for possible resent case. */
2702 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
2704 ldlm_rep->lock_policy_res2 =
2705 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
2707 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
2708 ldlm_rep->lock_policy_res2 = 0;
2709 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
2710 ldlm_rep->lock_policy_res2) {
2711 lhc->mlh_reg_lh.cookie = 0ull;
2712 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
2715 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
2718 mdt_exit_ucred(info);
2720 mdt_shrink_reply(info);
2724 static int mdt_intent_reint(enum mdt_it_code opcode,
2725 struct mdt_thread_info *info,
2726 struct ldlm_lock **lockp,
2729 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
2730 struct ldlm_reply *rep = NULL;
2734 static const struct req_format *intent_fmts[REINT_MAX] = {
2735 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
2736 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
2741 opc = mdt_reint_opcode(info, intent_fmts);
2745 if (mdt_it_flavor[opcode].it_reint != opc) {
2746 CERROR("Reint code %ld doesn't match intent: %d\n",
2748 RETURN(err_serious(-EPROTO));
2751 /* Get lock from request for possible resent case. */
2752 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
2754 rc = mdt_reint_internal(info, lhc, opc);
2756 /* Check whether the reply has been packed successfully. */
2757 if (mdt_info_req(info)->rq_repmsg != NULL)
2758 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2760 RETURN(err_serious(-EFAULT));
2762 /* MDC expects this in any case */
2764 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
2766 /* Cross-ref case, the lock should be returned to the client */
2767 if (rc == -EREMOTE) {
2768 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
2769 rep->lock_policy_res2 = 0;
2770 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
2773 rep->lock_policy_res2 = clear_serious(rc);
2775 lhc->mlh_reg_lh.cookie = 0ull;
2776 rc = ELDLM_LOCK_ABORTED;
2780 static int mdt_intent_code(long itcode)
2788 case IT_OPEN|IT_CREAT:
2795 rc = MDT_IT_READDIR;
2798 rc = MDT_IT_GETATTR;
2810 rc = MDT_IT_GETXATTR;
2813 CERROR("Unknown intent opcode: %ld\n", itcode);
2820 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
2821 struct ldlm_lock **lockp, int flags)
2823 struct req_capsule *pill;
2824 struct mdt_it_flavor *flv;
2829 opc = mdt_intent_code(itopc);
2833 pill = info->mti_pill;
2834 flv = &mdt_it_flavor[opc];
2836 if (flv->it_fmt != NULL)
2837 req_capsule_extend(pill, flv->it_fmt);
2839 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
2841 struct ptlrpc_request *req = mdt_info_req(info);
2842 if (flv->it_flags & MUTABOR &&
2843 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2846 if (rc == 0 && flv->it_act != NULL) {
2847 /* execute policy */
2848 rc = flv->it_act(opc, info, lockp, flags);
2855 static int mdt_intent_policy(struct ldlm_namespace *ns,
2856 struct ldlm_lock **lockp, void *req_cookie,
2857 ldlm_mode_t mode, int flags, void *data)
2859 struct mdt_thread_info *info;
2860 struct ptlrpc_request *req = req_cookie;
2861 struct ldlm_intent *it;
2862 struct req_capsule *pill;
2867 LASSERT(req != NULL);
2869 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
2871 LASSERT(info != NULL);
2872 pill = info->mti_pill;
2873 LASSERT(pill->rc_req == req);
2875 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
2876 req_capsule_extend(pill, &RQF_LDLM_INTENT);
2877 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
2879 const struct ldlm_request *dlmreq;
2882 struct ldlm_lock *lock = *lockp;
2884 LDLM_DEBUG(lock, "intent policy opc: %s\n",
2885 ldlm_it2str(it->opc));
2888 rc = mdt_intent_opc(it->opc, info, lockp, flags);
2893 * Lock without inodebits makes no sense and will oops
2894 * later in ldlm. Let's check it now to see if we have
2895 * wrong lock from client or bits get corrupted
2896 * somewhere in mdt_intent_opc().
2898 dlmreq = info->mti_dlm_req;
2899 req_bits = dlmreq->lock_desc.l_policy_data.l_inodebits.bits;
2900 LASSERT(req_bits != 0);
2903 rc = err_serious(-EFAULT);
2905 /* No intent was provided */
2906 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
2907 rc = req_capsule_server_pack(pill);
2909 rc = err_serious(rc);
2917 static void mdt_seq_adjust(const struct lu_env *env,
2918 struct mdt_device *m, int lost)
2920 struct lu_site *ls = m->mdt_md_dev.md_lu_dev.ld_site;
2921 struct lu_range out;
2924 LASSERT(ls && ls->ls_server_seq);
2926 /* get extra seq from seq_server, moving it's range up */
2927 while (lost-- > 0) {
2928 seq_server_alloc_meta(ls->ls_server_seq, NULL, &out, env);
2933 static int mdt_seq_fini(const struct lu_env *env,
2934 struct mdt_device *m)
2936 struct lu_site *ls = m->mdt_md_dev.md_lu_dev.ld_site;
2939 if (ls && ls->ls_server_seq) {
2940 seq_server_fini(ls->ls_server_seq, env);
2941 OBD_FREE_PTR(ls->ls_server_seq);
2942 ls->ls_server_seq = NULL;
2945 if (ls && ls->ls_control_seq) {
2946 seq_server_fini(ls->ls_control_seq, env);
2947 OBD_FREE_PTR(ls->ls_control_seq);
2948 ls->ls_control_seq = NULL;
2951 if (ls && ls->ls_client_seq) {
2952 seq_client_fini(ls->ls_client_seq);
2953 OBD_FREE_PTR(ls->ls_client_seq);
2954 ls->ls_client_seq = NULL;
2960 static int mdt_seq_init(const struct lu_env *env,
2962 struct mdt_device *m)
2969 ls = m->mdt_md_dev.md_lu_dev.ld_site;
2972 * This is sequence-controller node. Init seq-controller server on local
2975 if (ls->ls_node_id == 0) {
2976 LASSERT(ls->ls_control_seq == NULL);
2978 OBD_ALLOC_PTR(ls->ls_control_seq);
2979 if (ls->ls_control_seq == NULL)
2982 rc = seq_server_init(ls->ls_control_seq,
2983 m->mdt_bottom, uuid,
2984 LUSTRE_SEQ_CONTROLLER,
2988 GOTO(out_seq_fini, rc);
2990 OBD_ALLOC_PTR(ls->ls_client_seq);
2991 if (ls->ls_client_seq == NULL)
2992 GOTO(out_seq_fini, rc = -ENOMEM);
2994 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
2995 if (prefix == NULL) {
2996 OBD_FREE_PTR(ls->ls_client_seq);
2997 GOTO(out_seq_fini, rc = -ENOMEM);
3000 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3004 * Init seq-controller client after seq-controller server is
3005 * ready. Pass ls->ls_control_seq to it for direct talking.
3007 rc = seq_client_init(ls->ls_client_seq, NULL,
3008 LUSTRE_SEQ_METADATA, prefix,
3009 ls->ls_control_seq);
3010 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3013 GOTO(out_seq_fini, rc);
3016 /* Init seq-server on local MDT */
3017 LASSERT(ls->ls_server_seq == NULL);
3019 OBD_ALLOC_PTR(ls->ls_server_seq);
3020 if (ls->ls_server_seq == NULL)
3021 GOTO(out_seq_fini, rc = -ENOMEM);
3023 rc = seq_server_init(ls->ls_server_seq,
3024 m->mdt_bottom, uuid,
3028 GOTO(out_seq_fini, rc = -ENOMEM);
3030 /* Assign seq-controller client to local seq-server. */
3031 if (ls->ls_node_id == 0) {
3032 LASSERT(ls->ls_client_seq != NULL);
3034 rc = seq_server_set_cli(ls->ls_server_seq,
3042 mdt_seq_fini(env, m);
3047 * Init client sequence manager which is used by local MDS to talk to sequence
3048 * controller on remote node.
3050 static int mdt_seq_init_cli(const struct lu_env *env,
3051 struct mdt_device *m,
3052 struct lustre_cfg *cfg)
3054 struct lu_site *ls = m->mdt_md_dev.md_lu_dev.ld_site;
3055 struct obd_device *mdc;
3056 struct obd_uuid *uuidp, *mdcuuidp;
3057 char *uuid_str, *mdc_uuid_str;
3060 struct mdt_thread_info *info;
3061 char *p, *index_string = lustre_cfg_string(cfg, 2);
3064 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3065 uuidp = &info->mti_u.uuid[0];
3066 mdcuuidp = &info->mti_u.uuid[1];
3068 LASSERT(index_string);
3070 index = simple_strtol(index_string, &p, 10);
3072 CERROR("Invalid index in lustre_cgf, offset 2\n");
3076 /* check if this is adding the first MDC and controller is not yet
3078 if (index != 0 || ls->ls_client_seq)
3081 uuid_str = lustre_cfg_string(cfg, 1);
3082 mdc_uuid_str = lustre_cfg_string(cfg, 4);
3083 obd_str2uuid(uuidp, uuid_str);
3084 obd_str2uuid(mdcuuidp, mdc_uuid_str);
3086 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
3088 CERROR("can't find controller MDC by uuid %s\n",
3091 } else if (!mdc->obd_set_up) {
3092 CERROR("target %s not set up\n", mdc->obd_name);
3095 LASSERT(ls->ls_control_exp);
3096 OBD_ALLOC_PTR(ls->ls_client_seq);
3097 if (ls->ls_client_seq != NULL) {
3100 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3104 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3107 rc = seq_client_init(ls->ls_client_seq,
3109 LUSTRE_SEQ_METADATA,
3111 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3118 LASSERT(ls->ls_server_seq != NULL);
3119 rc = seq_server_set_cli(ls->ls_server_seq, ls->ls_client_seq,
3126 static void mdt_seq_fini_cli(struct mdt_device *m)
3132 ls = m->mdt_md_dev.md_lu_dev.ld_site;
3134 if (ls && ls->ls_server_seq)
3135 seq_server_set_cli(ls->ls_server_seq,
3138 if (ls && ls->ls_control_exp) {
3139 class_export_put(ls->ls_control_exp);
3140 ls->ls_control_exp = NULL;
3148 static int mdt_fld_fini(const struct lu_env *env,
3149 struct mdt_device *m)
3151 struct lu_site *ls = m->mdt_md_dev.md_lu_dev.ld_site;
3154 if (ls && ls->ls_server_fld) {
3155 fld_server_fini(ls->ls_server_fld, env);
3156 OBD_FREE_PTR(ls->ls_server_fld);
3157 ls->ls_server_fld = NULL;
3163 static int mdt_fld_init(const struct lu_env *env,
3165 struct mdt_device *m)
3171 ls = m->mdt_md_dev.md_lu_dev.ld_site;
3173 OBD_ALLOC_PTR(ls->ls_server_fld);
3174 if (ls->ls_server_fld == NULL)
3175 RETURN(rc = -ENOMEM);
3177 rc = fld_server_init(ls->ls_server_fld,
3178 m->mdt_bottom, uuid, env);
3180 OBD_FREE_PTR(ls->ls_server_fld);
3181 ls->ls_server_fld = NULL;
3188 /* device init/fini methods */
3189 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
3192 if (m->mdt_regular_service != NULL) {
3193 ptlrpc_unregister_service(m->mdt_regular_service);
3194 m->mdt_regular_service = NULL;
3196 if (m->mdt_readpage_service != NULL) {
3197 ptlrpc_unregister_service(m->mdt_readpage_service);
3198 m->mdt_readpage_service = NULL;
3200 if (m->mdt_xmds_service != NULL) {
3201 ptlrpc_unregister_service(m->mdt_xmds_service);
3202 m->mdt_xmds_service = NULL;
3204 if (m->mdt_setattr_service != NULL) {
3205 ptlrpc_unregister_service(m->mdt_setattr_service);
3206 m->mdt_setattr_service = NULL;
3208 if (m->mdt_mdsc_service != NULL) {
3209 ptlrpc_unregister_service(m->mdt_mdsc_service);
3210 m->mdt_mdsc_service = NULL;
3212 if (m->mdt_mdss_service != NULL) {
3213 ptlrpc_unregister_service(m->mdt_mdss_service);
3214 m->mdt_mdss_service = NULL;
3216 if (m->mdt_dtss_service != NULL) {
3217 ptlrpc_unregister_service(m->mdt_dtss_service);
3218 m->mdt_dtss_service = NULL;
3220 if (m->mdt_fld_service != NULL) {
3221 ptlrpc_unregister_service(m->mdt_fld_service);
3222 m->mdt_fld_service = NULL;
3227 static int mdt_start_ptlrpc_service(struct mdt_device *m)
3230 static struct ptlrpc_service_conf conf;
3231 cfs_proc_dir_entry_t *procfs_entry;
3234 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
3236 conf = (typeof(conf)) {
3237 .psc_nbufs = MDS_NBUFS,
3238 .psc_bufsize = MDS_BUFSIZE,
3239 .psc_max_req_size = MDS_MAXREQSIZE,
3240 .psc_max_reply_size = MDS_MAXREPSIZE,
3241 .psc_req_portal = MDS_REQUEST_PORTAL,
3242 .psc_rep_portal = MDC_REPLY_PORTAL,
3243 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3245 * We'd like to have a mechanism to set this on a per-device
3246 * basis, but alas...
3248 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3250 .psc_max_threads = MDT_MAX_THREADS,
3251 .psc_ctx_tags = LCT_MD_THREAD
3254 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
3255 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3256 "mdt_ldlm_client", m->mdt_ldlm_client);
3258 m->mdt_regular_service =
3259 ptlrpc_init_svc_conf(&conf, mdt_regular_handle, LUSTRE_MDT_NAME,
3260 procfs_entry, NULL, LUSTRE_MDT_NAME);
3261 if (m->mdt_regular_service == NULL)
3264 rc = ptlrpc_start_threads(NULL, m->mdt_regular_service);
3266 GOTO(err_mdt_svc, rc);
3269 * readpage service configuration. Parameters have to be adjusted,
3272 conf = (typeof(conf)) {
3273 .psc_nbufs = MDS_NBUFS,
3274 .psc_bufsize = MDS_BUFSIZE,
3275 .psc_max_req_size = MDS_MAXREQSIZE,
3276 .psc_max_reply_size = MDS_MAXREPSIZE,
3277 .psc_req_portal = MDS_READPAGE_PORTAL,
3278 .psc_rep_portal = MDC_REPLY_PORTAL,
3279 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3280 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3282 .psc_max_threads = MDT_MAX_THREADS,
3283 .psc_ctx_tags = LCT_MD_THREAD
3285 m->mdt_readpage_service =
3286 ptlrpc_init_svc_conf(&conf, mdt_readpage_handle,
3287 LUSTRE_MDT_NAME "_readpage",
3288 procfs_entry, NULL, "mdt_rdpg");
3290 if (m->mdt_readpage_service == NULL) {
3291 CERROR("failed to start readpage service\n");
3292 GOTO(err_mdt_svc, rc = -ENOMEM);
3295 rc = ptlrpc_start_threads(NULL, m->mdt_readpage_service);
3298 * setattr service configuration.
3300 conf = (typeof(conf)) {
3301 .psc_nbufs = MDS_NBUFS,
3302 .psc_bufsize = MDS_BUFSIZE,
3303 .psc_max_req_size = MDS_MAXREQSIZE,
3304 .psc_max_reply_size = MDS_MAXREPSIZE,
3305 .psc_req_portal = MDS_SETATTR_PORTAL,
3306 .psc_rep_portal = MDC_REPLY_PORTAL,
3307 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3308 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3310 .psc_max_threads = MDT_MAX_THREADS,
3311 .psc_ctx_tags = LCT_MD_THREAD
3314 m->mdt_setattr_service =
3315 ptlrpc_init_svc_conf(&conf, mdt_regular_handle,
3316 LUSTRE_MDT_NAME "_setattr",
3317 procfs_entry, NULL, "mdt_attr");
3319 if (!m->mdt_setattr_service) {
3320 CERROR("failed to start setattr service\n");
3321 GOTO(err_mdt_svc, rc = -ENOMEM);
3324 rc = ptlrpc_start_threads(NULL, m->mdt_setattr_service);
3326 GOTO(err_mdt_svc, rc);
3329 * sequence controller service configuration
3331 conf = (typeof(conf)) {
3332 .psc_nbufs = MDS_NBUFS,
3333 .psc_bufsize = MDS_BUFSIZE,
3334 .psc_max_req_size = SEQ_MAXREQSIZE,
3335 .psc_max_reply_size = SEQ_MAXREPSIZE,
3336 .psc_req_portal = SEQ_CONTROLLER_PORTAL,
3337 .psc_rep_portal = MDC_REPLY_PORTAL,
3338 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3339 .psc_min_threads = SEQ_NUM_THREADS,
3340 .psc_max_threads = SEQ_NUM_THREADS,
3341 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3344 m->mdt_mdsc_service =
3345 ptlrpc_init_svc_conf(&conf, mdt_mdsc_handle,
3346 LUSTRE_MDT_NAME"_mdsc",
3347 procfs_entry, NULL, "mdt_mdsc");
3348 if (!m->mdt_mdsc_service) {
3349 CERROR("failed to start seq controller service\n");
3350 GOTO(err_mdt_svc, rc = -ENOMEM);
3353 rc = ptlrpc_start_threads(NULL, m->mdt_mdsc_service);
3355 GOTO(err_mdt_svc, rc);
3358 * metadata sequence server service configuration
3360 conf = (typeof(conf)) {
3361 .psc_nbufs = MDS_NBUFS,
3362 .psc_bufsize = MDS_BUFSIZE,
3363 .psc_max_req_size = SEQ_MAXREQSIZE,
3364 .psc_max_reply_size = SEQ_MAXREPSIZE,
3365 .psc_req_portal = SEQ_METADATA_PORTAL,
3366 .psc_rep_portal = MDC_REPLY_PORTAL,
3367 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3368 .psc_min_threads = SEQ_NUM_THREADS,
3369 .psc_max_threads = SEQ_NUM_THREADS,
3370 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3373 m->mdt_mdss_service =
3374 ptlrpc_init_svc_conf(&conf, mdt_mdss_handle,
3375 LUSTRE_MDT_NAME"_mdss",
3376 procfs_entry, NULL, "mdt_mdss");
3377 if (!m->mdt_mdss_service) {
3378 CERROR("failed to start metadata seq server service\n");
3379 GOTO(err_mdt_svc, rc = -ENOMEM);
3382 rc = ptlrpc_start_threads(NULL, m->mdt_mdss_service);
3384 GOTO(err_mdt_svc, rc);
3388 * Data sequence server service configuration. We want to have really
3389 * cluster-wide sequences space. This is why we start only one sequence
3390 * controller which manages space.
3392 conf = (typeof(conf)) {
3393 .psc_nbufs = MDS_NBUFS,
3394 .psc_bufsize = MDS_BUFSIZE,
3395 .psc_max_req_size = SEQ_MAXREQSIZE,
3396 .psc_max_reply_size = SEQ_MAXREPSIZE,
3397 .psc_req_portal = SEQ_DATA_PORTAL,
3398 .psc_rep_portal = OSC_REPLY_PORTAL,
3399 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3400 .psc_min_threads = SEQ_NUM_THREADS,
3401 .psc_max_threads = SEQ_NUM_THREADS,
3402 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3405 m->mdt_dtss_service =
3406 ptlrpc_init_svc_conf(&conf, mdt_dtss_handle,
3407 LUSTRE_MDT_NAME"_dtss",
3408 procfs_entry, NULL, "mdt_dtss");
3409 if (!m->mdt_dtss_service) {
3410 CERROR("failed to start data seq server service\n");
3411 GOTO(err_mdt_svc, rc = -ENOMEM);
3414 rc = ptlrpc_start_threads(NULL, m->mdt_dtss_service);
3416 GOTO(err_mdt_svc, rc);
3418 /* FLD service start */
3419 conf = (typeof(conf)) {
3420 .psc_nbufs = MDS_NBUFS,
3421 .psc_bufsize = MDS_BUFSIZE,
3422 .psc_max_req_size = FLD_MAXREQSIZE,
3423 .psc_max_reply_size = FLD_MAXREPSIZE,
3424 .psc_req_portal = FLD_REQUEST_PORTAL,
3425 .psc_rep_portal = MDC_REPLY_PORTAL,
3426 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3427 .psc_min_threads = FLD_NUM_THREADS,
3428 .psc_max_threads = FLD_NUM_THREADS,
3429 .psc_ctx_tags = LCT_DT_THREAD|LCT_MD_THREAD
3432 m->mdt_fld_service =
3433 ptlrpc_init_svc_conf(&conf, mdt_fld_handle,
3434 LUSTRE_MDT_NAME"_fld",
3435 procfs_entry, NULL, "mdt_fld");
3436 if (!m->mdt_fld_service) {
3437 CERROR("failed to start fld service\n");
3438 GOTO(err_mdt_svc, rc = -ENOMEM);
3441 rc = ptlrpc_start_threads(NULL, m->mdt_fld_service);
3443 GOTO(err_mdt_svc, rc);
3446 * mds-mds service configuration. Separate portal is used to allow
3447 * mds-mds requests be not blocked during recovery.
3449 conf = (typeof(conf)) {
3450 .psc_nbufs = MDS_NBUFS,
3451 .psc_bufsize = MDS_BUFSIZE,
3452 .psc_max_req_size = MDS_MAXREQSIZE,
3453 .psc_max_reply_size = MDS_MAXREPSIZE,
3454 .psc_req_portal = MDS_MDS_PORTAL,
3455 .psc_rep_portal = MDC_REPLY_PORTAL,
3456 .psc_watchdog_timeout = MDT_SERVICE_WATCHDOG_TIMEOUT,
3457 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3459 .psc_max_threads = MDT_MAX_THREADS,
3460 .psc_ctx_tags = LCT_MD_THREAD
3462 m->mdt_xmds_service = ptlrpc_init_svc_conf(&conf, mdt_xmds_handle,
3463 LUSTRE_MDT_NAME "_mds",
3464 procfs_entry, NULL, "mdt_xmds");
3466 if (m->mdt_xmds_service == NULL) {
3467 CERROR("failed to start readpage service\n");
3468 GOTO(err_mdt_svc, rc = -ENOMEM);
3471 rc = ptlrpc_start_threads(NULL, m->mdt_xmds_service);
3473 GOTO(err_mdt_svc, rc);
3478 mdt_stop_ptlrpc_service(m);
3483 static void mdt_stack_fini(const struct lu_env *env,
3484 struct mdt_device *m, struct lu_device *top)
3486 struct lu_device *d = top, *n;
3487 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3488 struct lustre_cfg_bufs *bufs;
3489 struct lustre_cfg *lcfg;
3490 struct mdt_thread_info *info;
3494 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3495 LASSERT(info != NULL);
3497 bufs = &info->mti_u.bufs;
3498 /* process cleanup, pass mdt obd name to get obd umount flags */
3499 lustre_cfg_bufs_reset(bufs, obd->obd_name);
3504 lustre_cfg_bufs_set_string(bufs, 1, flags);
3505 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3507 CERROR("Cannot alloc lcfg!\n");
3512 top->ld_ops->ldo_process_config(env, top, lcfg);
3513 lustre_cfg_free(lcfg);
3515 lu_site_purge(env, top->ld_site, ~0);
3517 struct obd_type *type;
3518 struct lu_device_type *ldt = d->ld_type;
3520 /* each fini() returns next device in stack of layers
3521 * * so we can avoid the recursion */
3522 n = ldt->ldt_ops->ldto_device_fini(env, d);
3524 ldt->ldt_ops->ldto_device_free(env, d);
3525 type = ldt->ldt_obd_type;
3527 class_put_type(type);
3529 /* switch to the next device in the layer */
3532 m->mdt_child = NULL;
3533 m->mdt_bottom = NULL;
3536 static struct lu_device *mdt_layer_setup(const struct lu_env *env,
3537 const char *typename,
3538 struct lu_device *child,
3539 struct lustre_cfg *cfg)
3541 const char *dev = lustre_cfg_string(cfg, 0);
3542 struct obd_type *type;
3543 struct lu_device_type *ldt;
3544 struct lu_device *d;
3549 type = class_get_type(typename);
3551 CERROR("Unknown type: '%s'\n", typename);
3552 GOTO(out, rc = -ENODEV);
3555 rc = lu_context_refill(&env->le_ctx);
3557 CERROR("Failure to refill context: '%d'\n", rc);
3561 if (env->le_ses != NULL) {
3562 rc = lu_context_refill(env->le_ses);
3564 CERROR("Failure to refill session: '%d'\n", rc);
3571 CERROR("type: '%s'\n", typename);
3572 GOTO(out_type, rc = -EINVAL);
3575 ldt->ldt_obd_type = type;
3576 d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
3578 CERROR("Cannot allocate device: '%s'\n", typename);
3579 GOTO(out_type, rc = -ENODEV);
3582 LASSERT(child->ld_site);
3583 d->ld_site = child->ld_site;
3586 rc = ldt->ldt_ops->ldto_device_init(env, d, dev, child);
3588 CERROR("can't init device '%s', rc %d\n", typename, rc);
3589 GOTO(out_alloc, rc);
3596 ldt->ldt_ops->ldto_device_free(env, d);
3599 class_put_type(type);
3604 static int mdt_stack_init(const struct lu_env *env,
3605 struct mdt_device *m, struct lustre_cfg *cfg)
3607 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3608 struct lu_device *tmp;
3609 struct md_device *md;
3613 /* init the stack */
3614 tmp = mdt_layer_setup(env, LUSTRE_OSD_NAME, d, cfg);
3616 RETURN(PTR_ERR(tmp));
3618 m->mdt_bottom = lu2dt_dev(tmp);
3620 tmp = mdt_layer_setup(env, LUSTRE_MDD_NAME, d, cfg);
3622 GOTO(out, rc = PTR_ERR(tmp));
3627 tmp = mdt_layer_setup(env, LUSTRE_CMM_NAME, d, cfg);
3629 GOTO(out, rc = PTR_ERR(tmp));
3632 /*set mdd upcall device*/
3633 md_upcall_dev_set(md, lu2md_dev(d));
3636 /*set cmm upcall device*/
3637 md_upcall_dev_set(md, &m->mdt_md_dev);
3639 m->mdt_child = lu2md_dev(d);
3641 /* process setup config */
3642 tmp = &m->mdt_md_dev.md_lu_dev;
3643 rc = tmp->ld_ops->ldo_process_config(env, tmp, cfg);
3646 /* fini from last known good lu_device */
3648 mdt_stack_fini(env, m, d);
3653 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
3655 struct md_device *next = m->mdt_child;
3656 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3657 struct lu_site *ls = d->ld_site;
3658 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3661 ping_evictor_stop();
3663 target_recovery_fini(obd);
3664 mdt_stop_ptlrpc_service(m);
3666 mdt_fs_cleanup(env, m);
3668 upcall_cache_cleanup(m->mdt_identity_cache);
3669 m->mdt_identity_cache = NULL;
3671 if (m->mdt_namespace != NULL) {
3672 ldlm_namespace_free(m->mdt_namespace, d->ld_obd->obd_force);
3673 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
3676 mdt_seq_fini(env, m);
3677 mdt_seq_fini_cli(m);
3678 mdt_fld_fini(env, m);
3680 ptlrpc_lprocfs_unregister_obd(d->ld_obd);
3681 lprocfs_obd_cleanup(d->ld_obd);
3683 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
3685 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
3686 del_timer(&m->mdt_ck_timer);
3687 mdt_ck_thread_stop(m);
3689 /* finish the stack */
3690 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
3693 if (!list_empty(&ls->ls_lru) || ls->ls_total != 0) {
3695 * Uh-oh, objects still exist.
3697 static DECLARE_LU_CDEBUG_PRINT_INFO(cookie, D_ERROR);
3699 lu_site_print(env, ls, &cookie, lu_cdebug_printer);
3706 LASSERT(atomic_read(&d->ld_ref) == 0);
3707 md_device_fini(&m->mdt_md_dev);
3712 static void fsoptions_to_mdt_flags(struct mdt_device *m, char *options)
3716 #ifdef CONFIG_FS_POSIX_ACL
3717 /* ACLs should be enabled by default (b=13829) */
3718 m->mdt_opts.mo_acl = 1;
3719 LCONSOLE_INFO("Enabling ACL\n");
3721 m->mdt_opts.mo_acl = 0;
3722 LCONSOLE_INFO("Disabling ACL\n");
3731 while (*p && *p != ',')
3735 if ((len == sizeof("user_xattr") - 1) &&
3736 (memcmp(options, "user_xattr", len) == 0)) {
3737 m->mdt_opts.mo_user_xattr = 1;
3738 LCONSOLE_INFO("Enabling user_xattr\n");
3739 } else if ((len == sizeof("nouser_xattr") - 1) &&
3740 (memcmp(options, "nouser_xattr", len) == 0)) {
3741 m->mdt_opts.mo_user_xattr = 0;
3742 LCONSOLE_INFO("Disabling user_xattr\n");
3743 } else if ((len == sizeof("noacl") - 1) &&
3744 (memcmp(options, "noacl", len) == 0)) {
3745 m->mdt_opts.mo_acl = 0;
3746 LCONSOLE_INFO("Disabling ACL\n");
3753 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
3755 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
3756 struct lu_device_type *ldt, struct lustre_cfg *cfg)
3758 struct lprocfs_static_vars lvars;
3759 struct mdt_thread_info *info;
3760 struct obd_device *obd;
3761 const char *dev = lustre_cfg_string(cfg, 0);
3762 const char *num = lustre_cfg_string(cfg, 2);
3763 struct lustre_mount_info *lmi;
3764 struct lustre_sb_info *lsi;
3766 const char *identity_upcall = "NONE";
3770 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3771 LASSERT(info != NULL);
3773 obd = class_name2obd(dev);
3774 LASSERT(obd != NULL);
3776 spin_lock_init(&m->mdt_transno_lock);
3778 m->mdt_max_mdsize = MAX_MD_SIZE;
3779 m->mdt_max_cookiesize = sizeof(struct llog_cookie);
3781 m->mdt_opts.mo_user_xattr = 0;
3782 m->mdt_opts.mo_acl = 0;
3783 lmi = server_get_mount_2(dev);
3785 CERROR("Cannot get mount info for %s!\n", dev);
3788 lsi = s2lsi(lmi->lmi_sb);
3789 fsoptions_to_mdt_flags(m, lsi->lsi_lmd->lmd_opts);
3790 server_put_mount_2(dev, lmi->lmi_mnt);
3793 m->mdt_sptlrpc_lock = RW_LOCK_UNLOCKED;
3794 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
3796 spin_lock_init(&m->mdt_ioepoch_lock);
3797 m->mdt_opts.mo_compat_resname = 0;
3798 m->mdt_capa_timeout = CAPA_TIMEOUT;
3799 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
3800 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
3802 spin_lock_init(&m->mdt_client_bitmap_lock);
3808 md_device_init(&m->mdt_md_dev, ldt);
3809 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
3810 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
3811 /* set this lu_device to obd, because error handling need it */
3812 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
3814 rc = lu_site_init(s, &m->mdt_md_dev.md_lu_dev);
3816 CERROR("Can't init lu_site, rc %d\n", rc);
3817 GOTO(err_free_site, rc);
3820 lprocfs_mdt_init_vars(&lvars);
3821 rc = lprocfs_obd_setup(obd, lvars.obd_vars);
3823 CERROR("Can't init lprocfs, rc %d\n", rc);
3824 GOTO(err_fini_site, rc);
3826 ptlrpc_lprocfs_register_obd(obd);
3828 rc = mdt_procfs_init(m, dev);
3830 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
3831 GOTO(err_fini_proc, rc);
3834 /* set server index */
3836 s->ls_node_id = simple_strtol(num, NULL, 10);
3838 /* failover is the default
3839 * FIXME: we do not failout mds0/mgs, which may cause some problems.
3840 * assumed whose ls_node_id == 0 XXX
3842 obd->obd_replayable = 1;
3843 /* No connection accepted until configurations will finish */
3844 obd->obd_no_conn = 1;
3846 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
3847 char *str = lustre_cfg_string(cfg, 4);
3848 if (strchr(str, 'n')) {
3849 CWARN("%s: recovery disabled\n", obd->obd_name);
3850 obd->obd_replayable = 0;
3854 /* init the stack */
3855 rc = mdt_stack_init(env, m, cfg);
3857 CERROR("Can't init device stack, rc %d\n", rc);
3858 GOTO(err_fini_proc, rc);
3861 rc = mdt_fld_init(env, obd->obd_name, m);
3863 GOTO(err_fini_stack, rc);
3865 rc = mdt_seq_init(env, obd->obd_name, m);
3867 GOTO(err_fini_fld, rc);
3869 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
3870 LUSTRE_MDT_NAME"-%p", m);
3871 m->mdt_namespace = ldlm_namespace_new(info->mti_u.ns_name,
3872 LDLM_NAMESPACE_SERVER,
3873 LDLM_NAMESPACE_GREEDY);
3874 if (m->mdt_namespace == NULL)
3875 GOTO(err_fini_seq, rc = -ENOMEM);
3877 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
3878 /* set obd_namespace for compatibility with old code */
3879 obd->obd_namespace = m->mdt_namespace;
3881 /* XXX: to support suppgid for ACL, we enable identity_upcall
3882 * by default, otherwise, maybe got unexpected -EACCESS. */
3883 if (m->mdt_opts.mo_acl)
3884 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
3886 m->mdt_identity_cache = upcall_cache_init(obd->obd_name, identity_upcall,
3887 &mdt_identity_upcall_cache_ops);
3888 if (IS_ERR(m->mdt_identity_cache)) {
3889 rc = PTR_ERR(m->mdt_identity_cache);
3890 m->mdt_identity_cache = NULL;
3891 GOTO(err_free_ns, rc);
3894 m->mdt_ck_timer.function = mdt_ck_timer_callback;
3895 m->mdt_ck_timer.data = (unsigned long)m;
3896 init_timer(&m->mdt_ck_timer);
3897 rc = mdt_ck_thread_start(m);
3899 GOTO(err_free_ns, rc);
3901 rc = mdt_fs_setup(env, m, obd);
3905 target_recovery_init(obd, mdt_recovery_handle);
3907 rc = mdt_start_ptlrpc_service(m);
3909 GOTO(err_fs_cleanup, rc);
3911 ping_evictor_start();
3913 rc = lu_site_init_finish(s);
3915 GOTO(err_stop_service, rc);
3917 if (obd->obd_recovering == 0)
3918 mdt_postrecov(env, m);
3920 mdt_init_capa_ctxt(env, m);
3922 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
3928 ping_evictor_stop();
3929 mdt_stop_ptlrpc_service(m);
3931 target_recovery_fini(obd);
3932 mdt_fs_cleanup(env, m);
3934 del_timer(&m->mdt_ck_timer);
3935 mdt_ck_thread_stop(m);
3937 upcall_cache_cleanup(m->mdt_identity_cache);
3938 m->mdt_identity_cache = NULL;
3939 ldlm_namespace_free(m->mdt_namespace, 0);
3940 obd->obd_namespace = m->mdt_namespace = NULL;
3942 mdt_seq_fini(env, m);
3944 mdt_fld_fini(env, m);
3946 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
3949 lprocfs_obd_cleanup(obd);
3955 md_device_fini(&m->mdt_md_dev);
3959 /* used by MGS to process specific configurations */
3960 static int mdt_process_config(const struct lu_env *env,
3961 struct lu_device *d, struct lustre_cfg *cfg)
3963 struct mdt_device *m = mdt_dev(d);
3964 struct md_device *md_next = m->mdt_child;
3965 struct lu_device *next = md2lu_dev(md_next);
3969 switch (cfg->lcfg_command) {
3970 case LCFG_SPTLRPC_CONF: {
3971 struct sptlrpc_conf_log *log;
3972 struct sptlrpc_rule_set tmp_rset;
3974 log = sptlrpc_conf_log_extract(cfg);
3980 sptlrpc_rule_set_init(&tmp_rset);
3982 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
3984 CERROR("mdt %p: failed get sptlrpc rules: %d\n", m, rc);
3988 write_lock(&m->mdt_sptlrpc_lock);
3989 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
3990 m->mdt_sptlrpc_rset = tmp_rset;
3991 write_unlock(&m->mdt_sptlrpc_lock);
3993 sptlrpc_target_update_exp_flavor(
3994 md2lu_dev(&m->mdt_md_dev)->ld_obd, &tmp_rset);
3999 struct lprocfs_static_vars lvars;
4000 struct obd_device *obd = d->ld_obd;
4002 lprocfs_mdt_init_vars(&lvars);
4003 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars, cfg, obd);
4005 /* others are passed further */
4006 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4011 * Add mdc hook to get first MDT uuid and connect it to
4012 * ls->controller to use for seq manager.
4014 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4016 CERROR("Can't add mdc, rc %d\n", rc);
4018 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
4021 /* others are passed further */
4022 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4028 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4029 const struct lu_object_header *hdr,
4030 struct lu_device *d)
4032 struct mdt_object *mo;
4038 struct lu_object *o;
4039 struct lu_object_header *h;
4041 o = &mo->mot_obj.mo_lu;
4042 h = &mo->mot_header;
4043 lu_object_header_init(h);
4044 lu_object_init(o, h, d);
4045 lu_object_add_top(h, o);
4046 o->lo_ops = &mdt_obj_ops;
4052 static int mdt_object_init(const struct lu_env *env, struct lu_object *o)
4054 struct mdt_device *d = mdt_dev(o->lo_dev);
4055 struct lu_device *under;
4056 struct lu_object *below;
4060 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4061 PFID(lu_object_fid(o)));
4063 under = &d->mdt_child->md_lu_dev;
4064 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4065 if (below != NULL) {
4066 lu_object_add(o, below);
4073 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4075 struct mdt_object *mo = mdt_obj(o);
4076 struct lu_object_header *h;
4080 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4081 PFID(lu_object_fid(o)));
4084 lu_object_header_fini(h);
4089 static int mdt_object_print(const struct lu_env *env, void *cookie,
4090 lu_printer_t p, const struct lu_object *o)
4092 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p", o);
4095 static struct lu_device_operations mdt_lu_ops = {
4096 .ldo_object_alloc = mdt_object_alloc,
4097 .ldo_process_config = mdt_process_config
4100 static struct lu_object_operations mdt_obj_ops = {
4101 .loo_object_init = mdt_object_init,
4102 .loo_object_free = mdt_object_free,
4103 .loo_object_print = mdt_object_print
4106 /* mds_connect_internal */
4107 static int mdt_connect_internal(struct obd_export *exp,
4108 struct mdt_device *mdt,
4109 struct obd_connect_data *data)
4114 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4115 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4117 /* If no known bits (which should not happen, probably,
4118 as everybody should support LOOKUP and UPDATE bits at least)
4119 revert to compat mode with plain locks. */
4120 if (!data->ocd_ibits_known &&
4121 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4122 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4124 if (!mdt->mdt_opts.mo_acl)
4125 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4127 if (!mdt->mdt_opts.mo_user_xattr)
4128 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4130 if (!mdt->mdt_opts.mo_mds_capa)
4131 data->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
4133 if (!mdt->mdt_opts.mo_oss_capa)
4134 data->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
4136 spin_lock(&exp->exp_lock);
4137 exp->exp_connect_flags = data->ocd_connect_flags;
4138 spin_unlock(&exp->exp_lock);
4139 data->ocd_version = LUSTRE_VERSION_CODE;
4140 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
4144 if (mdt->mdt_opts.mo_acl &&
4145 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
4146 CWARN("%s: MDS requires ACL support but client does not\n",
4147 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4152 flags = OBD_CONNECT_LCL_CLIENT | OBD_CONNECT_RMT_CLIENT;
4153 if ((exp->exp_connect_flags & flags) == flags) {
4154 CWARN("%s: both local and remote client flags are set\n",
4155 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4159 if (mdt->mdt_opts.mo_mds_capa &&
4160 ((exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) == 0)) {
4161 CWARN("%s: MDS requires capability support, but client not\n",
4162 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4166 if (mdt->mdt_opts.mo_oss_capa &&
4167 ((exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA) == 0)) {
4168 CWARN("%s: MDS requires OSS capability support, "
4170 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4174 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
4175 CWARN("%s: MDS requires FID support, but client not\n",
4176 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4183 /* mds_connect copy */
4184 static int mdt_obd_connect(const struct lu_env *env,
4185 struct lustre_handle *conn, struct obd_device *obd,
4186 struct obd_uuid *cluuid,
4187 struct obd_connect_data *data)
4189 struct mdt_thread_info *info;
4190 struct mdt_client_data *mcd;
4191 struct obd_export *exp;
4192 struct mdt_device *mdt;
4193 struct ptlrpc_request *req;
4197 LASSERT(env != NULL);
4198 if (!conn || !obd || !cluuid)
4201 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4202 req = info->mti_pill->rc_req;
4203 mdt = mdt_dev(obd->obd_lu_dev);
4205 rc = class_connect(conn, obd, cluuid);
4209 exp = class_conn2export(conn);
4210 LASSERT(exp != NULL);
4212 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4214 spin_lock(&exp->exp_lock);
4215 exp->exp_sp_peer = req->rq_sp_from;
4217 read_lock(&mdt->mdt_sptlrpc_lock);
4218 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset, exp->exp_sp_peer,
4219 req->rq_peer.nid, &exp->exp_flvr);
4220 read_unlock(&mdt->mdt_sptlrpc_lock);
4222 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4223 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4224 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4225 libcfs_nid2str(req->rq_peer.nid));
4226 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4227 spin_unlock(&exp->exp_lock);
4230 spin_unlock(&exp->exp_lock);
4232 rc = mdt_connect_internal(exp, mdt, data);
4236 struct mdt_thread_info *mti;
4237 mti = lu_context_key_get(&env->le_ctx,
4239 LASSERT(mti != NULL);
4241 memcpy(mcd->mcd_uuid, cluuid, sizeof mcd->mcd_uuid);
4242 exp->exp_mdt_data.med_mcd = mcd;
4243 rc = mdt_client_new(env, mdt);
4246 exp->exp_mdt_data.med_mcd = NULL;
4253 class_disconnect(exp);
4255 class_export_put(exp);
4260 static int mdt_obd_reconnect(const struct lu_env *env,
4261 struct obd_export *exp, struct obd_device *obd,
4262 struct obd_uuid *cluuid,
4263 struct obd_connect_data *data)
4265 struct mdt_thread_info *info;
4266 struct mdt_device *mdt;
4267 struct ptlrpc_request *req;
4271 if (exp == NULL || obd == NULL || cluuid == NULL)
4274 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4275 req = info->mti_pill->rc_req;
4276 mdt = mdt_dev(obd->obd_lu_dev);
4278 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4280 spin_lock(&exp->exp_lock);
4281 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
4282 exp->exp_sp_peer = req->rq_sp_from;
4284 read_lock(&mdt->mdt_sptlrpc_lock);
4285 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset,
4287 req->rq_peer.nid, &exp->exp_flvr);
4288 read_unlock(&mdt->mdt_sptlrpc_lock);
4290 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4291 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4292 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4293 libcfs_nid2str(req->rq_peer.nid));
4294 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4295 spin_unlock(&exp->exp_lock);
4299 spin_unlock(&exp->exp_lock);
4301 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
4306 static int mdt_obd_disconnect(struct obd_export *exp)
4308 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
4313 class_export_get(exp);
4315 /* Disconnect early so that clients can't keep using export */
4316 rc = class_disconnect(exp);
4317 if (mdt->mdt_namespace != NULL || exp->exp_obd->obd_namespace != NULL)
4318 ldlm_cancel_locks_for_export(exp);
4320 /* complete all outstanding replies */
4321 spin_lock(&exp->exp_lock);
4322 while (!list_empty(&exp->exp_outstanding_replies)) {
4323 struct ptlrpc_reply_state *rs =
4324 list_entry(exp->exp_outstanding_replies.next,
4325 struct ptlrpc_reply_state, rs_exp_list);
4326 struct ptlrpc_service *svc = rs->rs_service;
4328 spin_lock(&svc->srv_lock);
4329 list_del_init(&rs->rs_exp_list);
4330 ptlrpc_schedule_difficult_reply(rs);
4331 spin_unlock(&svc->srv_lock);
4333 spin_unlock(&exp->exp_lock);
4335 class_export_put(exp);
4339 /* FIXME: Can we avoid using these two interfaces? */
4340 static int mdt_init_export(struct obd_export *exp)
4342 struct mdt_export_data *med = &exp->exp_mdt_data;
4345 INIT_LIST_HEAD(&med->med_open_head);
4346 spin_lock_init(&med->med_open_lock);
4347 sema_init(&med->med_idmap_sem, 1);
4348 med->med_idmap = NULL;
4349 spin_lock(&exp->exp_lock);
4350 exp->exp_connecting = 1;
4351 spin_unlock(&exp->exp_lock);
4355 static int mdt_destroy_export(struct obd_export *export)
4357 struct mdt_export_data *med;
4358 struct obd_device *obd = export->exp_obd;
4359 struct mdt_device *mdt;
4360 struct mdt_thread_info *info;
4368 med = &export->exp_mdt_data;
4369 if (med->med_rmtclient)
4370 mdt_cleanup_idmap(med);
4372 target_destroy_export(export);
4374 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
4377 mdt = mdt_dev(obd->obd_lu_dev);
4378 LASSERT(mdt != NULL);
4380 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4384 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
4385 LASSERT(info != NULL);
4386 memset(info, 0, sizeof *info);
4387 info->mti_env = &env;
4388 info->mti_mdt = mdt;
4389 info->mti_exp = export;
4391 ma = &info->mti_attr;
4392 lmm_size = ma->ma_lmm_size = mdt->mdt_max_mdsize;
4393 cookie_size = ma->ma_cookie_size = mdt->mdt_max_cookiesize;
4394 OBD_ALLOC(ma->ma_lmm, lmm_size);
4395 OBD_ALLOC(ma->ma_cookie, cookie_size);
4397 if (ma->ma_lmm == NULL || ma->ma_cookie == NULL)
4398 GOTO(out, rc = -ENOMEM);
4399 ma->ma_need = MA_LOV | MA_COOKIE;
4401 /* Close any open files (which may also cause orphan unlinking). */
4402 spin_lock(&med->med_open_lock);
4403 while (!list_empty(&med->med_open_head)) {
4404 struct list_head *tmp = med->med_open_head.next;
4405 struct mdt_file_data *mfd =
4406 list_entry(tmp, struct mdt_file_data, mfd_list);
4408 /* Remove mfd handle so it can't be found again.
4409 * We are consuming the mfd_list reference here. */
4410 class_handle_unhash(&mfd->mfd_handle);
4411 list_del_init(&mfd->mfd_list);
4412 spin_unlock(&med->med_open_lock);
4413 mdt_mfd_close(info, mfd);
4414 /* TODO: if we close the unlinked file,
4415 * we need to remove it's objects from OST */
4416 memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
4417 spin_lock(&med->med_open_lock);
4418 ma->ma_lmm_size = lmm_size;
4419 ma->ma_cookie_size = cookie_size;
4420 ma->ma_need = MA_LOV | MA_COOKIE;
4423 spin_unlock(&med->med_open_lock);
4424 info->mti_mdt = NULL;
4425 mdt_client_del(&env, mdt);
4430 OBD_FREE(ma->ma_lmm, lmm_size);
4434 OBD_FREE(ma->ma_cookie, cookie_size);
4435 ma->ma_cookie = NULL;
4442 static void mdt_allow_cli(struct mdt_device *m, unsigned int flag)
4444 if (flag & CONFIG_LOG)
4445 m->mdt_fl_cfglog = 1;
4446 if (flag & CONFIG_SYNC)
4447 m->mdt_fl_synced = 1;
4449 if (m->mdt_fl_cfglog /* bz11778: && m->mdt_fl_synced */)
4450 /* Open for clients */
4451 m->mdt_md_dev.md_lu_dev.ld_obd->obd_no_conn = 0;
4454 static int mdt_upcall(const struct lu_env *env, struct md_device *md,
4455 enum md_upcall_event ev)
4457 struct mdt_device *m = mdt_dev(&md->md_lu_dev);
4458 struct md_device *next = m->mdt_child;
4459 struct mdt_thread_info *mti;
4465 rc = next->md_ops->mdo_maxsize_get(env, next,
4467 &m->mdt_max_cookiesize);
4468 CDEBUG(D_INFO, "get max mdsize %d max cookiesize %d\n",
4469 m->mdt_max_mdsize, m->mdt_max_cookiesize);
4470 mdt_allow_cli(m, CONFIG_SYNC);
4473 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4474 mti->mti_no_need_trans = 1;
4475 CDEBUG(D_INFO, "disable mdt trans for this thread\n");
4478 /* Check that MDT is not yet configured */
4479 LASSERT(!m->mdt_fl_cfglog);
4482 CERROR("invalid event\n");
4489 static int mdt_obd_notify(struct obd_device *host,
4490 struct obd_device *watched,
4491 enum obd_notify_event ev, void *data)
4496 case OBD_NOTIFY_CONFIG:
4497 mdt_allow_cli(mdt_dev(host->obd_lu_dev), (unsigned int)data);
4500 CDEBUG(D_INFO, "Unhandled notification %#x\n", ev);
4505 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
4506 void *karg, void *uarg)
4509 struct obd_device *obd= exp->exp_obd;
4510 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
4511 struct dt_device *dt = mdt->mdt_bottom;
4515 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
4516 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4522 rc = dt->dd_ops->dt_sync(&env, dt);
4524 case OBD_IOC_SET_READONLY:
4525 rc = dt->dd_ops->dt_sync(&env, dt);
4526 dt->dd_ops->dt_ro(&env, dt);
4528 case OBD_IOC_ABORT_RECOVERY:
4529 CERROR("Aborting recovery for device %s\n", obd->obd_name);
4530 target_stop_recovery_thread(obd);
4534 CERROR("Not supported cmd = %d for device %s\n",
4535 cmd, obd->obd_name);
4543 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
4545 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
4546 struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
4549 /* if some clients didn't participate in recovery then we can possibly
4550 * lost sequence. Now we should increase sequence for safe value */
4551 lost = obd->obd_max_recoverable_clients - obd->obd_connected_clients;
4552 mdt_seq_adjust(env, mdt, lost);
4554 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
4558 int mdt_obd_postrecov(struct obd_device *obd)
4563 rc = lu_env_init(&env, NULL, LCT_MD_THREAD);
4566 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
4571 static struct obd_ops mdt_obd_device_ops = {
4572 .o_owner = THIS_MODULE,
4573 .o_connect = mdt_obd_connect,
4574 .o_reconnect = mdt_obd_reconnect,
4575 .o_disconnect = mdt_obd_disconnect,
4576 .o_init_export = mdt_init_export,
4577 .o_destroy_export = mdt_destroy_export,
4578 .o_iocontrol = mdt_iocontrol,
4579 .o_postrecov = mdt_obd_postrecov,
4580 .o_notify = mdt_obd_notify
4583 static struct lu_device* mdt_device_fini(const struct lu_env *env,
4584 struct lu_device *d)
4586 struct mdt_device *m = mdt_dev(d);
4593 static void mdt_device_free(const struct lu_env *env, struct lu_device *d)
4595 struct mdt_device *m = mdt_dev(d);
4600 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
4601 struct lu_device_type *t,
4602 struct lustre_cfg *cfg)
4604 struct lu_device *l;
4605 struct mdt_device *m;
4611 l = &m->mdt_md_dev.md_lu_dev;
4612 rc = mdt_init0(env, m, t, cfg);
4618 md_upcall_init(&m->mdt_md_dev, mdt_upcall);
4620 l = ERR_PTR(-ENOMEM);
4624 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
4625 LU_KEY_INIT_FINI(mdt, struct mdt_thread_info);
4627 /* context key: mdt_thread_key */
4628 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
4630 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
4631 LU_KEY_INIT_FINI(mdt_txn, struct mdt_txn_info);
4633 struct lu_context_key mdt_txn_key = {
4634 .lct_tags = LCT_TX_HANDLE,
4635 .lct_init = mdt_txn_key_init,
4636 .lct_fini = mdt_txn_key_fini
4639 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
4641 return md_ucred(info->mti_env);
4644 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
4645 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key, &mdt_txn_key);
4647 static struct lu_device_type_operations mdt_device_type_ops = {
4648 .ldto_init = mdt_type_init,
4649 .ldto_fini = mdt_type_fini,
4651 .ldto_device_alloc = mdt_device_alloc,
4652 .ldto_device_free = mdt_device_free,
4653 .ldto_device_fini = mdt_device_fini
4656 static struct lu_device_type mdt_device_type = {
4657 .ldt_tags = LU_DEVICE_MD,
4658 .ldt_name = LUSTRE_MDT_NAME,
4659 .ldt_ops = &mdt_device_type_ops,
4660 .ldt_ctx_tags = LCT_MD_THREAD
4663 static int __init mdt_mod_init(void)
4665 struct lprocfs_static_vars lvars;
4668 mdt_num_threads = MDT_NUM_THREADS;
4669 lprocfs_mdt_init_vars(&lvars);
4670 rc = class_register_type(&mdt_obd_device_ops, NULL,
4671 lvars.module_vars, LUSTRE_MDT_NAME,
4677 static void __exit mdt_mod_exit(void)
4679 class_unregister_type(LUSTRE_MDT_NAME);
4683 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
4684 [prefix ## _ ## opc - prefix ## _ ## base] = { \
4686 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
4687 .mh_opc = prefix ## _ ## opc, \
4688 .mh_flags = flags, \
4693 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
4694 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
4696 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
4697 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
4699 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
4700 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
4702 * Request with a format known in advance
4704 #define DEF_MDT_HNDL_F(flags, name, fn) \
4705 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
4707 #define DEF_SEQ_HNDL_F(flags, name, fn) \
4708 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
4710 #define DEF_FLD_HNDL_F(flags, name, fn) \
4711 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
4713 * Request with a format we do not yet know
4715 #define DEF_MDT_HNDL_0(flags, name, fn) \
4716 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
4718 static struct mdt_handler mdt_mds_ops[] = {
4719 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
4720 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
4721 DEF_MDT_HNDL_F(0, SET_INFO, mdt_set_info),
4722 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
4723 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
4724 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
4725 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
4726 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
4727 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
4728 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
4729 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
4730 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
4731 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
4732 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
4733 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck_handle),
4734 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl_handle)
4737 #define DEF_OBD_HNDL(flags, name, fn) \
4738 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
4741 static struct mdt_handler mdt_obd_ops[] = {
4742 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
4743 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
4744 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback)
4747 #define DEF_DLM_HNDL_0(flags, name, fn) \
4748 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
4749 #define DEF_DLM_HNDL_F(flags, name, fn) \
4750 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
4752 static struct mdt_handler mdt_dlm_ops[] = {
4753 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
4754 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
4755 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
4756 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
4759 static struct mdt_handler mdt_llog_ops[] = {
4762 #define DEF_SEC_CTX_HNDL(name, fn) \
4763 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
4765 static struct mdt_handler mdt_sec_ctx_ops[] = {
4766 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
4767 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
4768 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
4771 static struct mdt_opc_slice mdt_regular_handlers[] = {
4773 .mos_opc_start = MDS_GETATTR,
4774 .mos_opc_end = MDS_LAST_OPC,
4775 .mos_hs = mdt_mds_ops
4778 .mos_opc_start = OBD_PING,
4779 .mos_opc_end = OBD_LAST_OPC,
4780 .mos_hs = mdt_obd_ops
4783 .mos_opc_start = LDLM_ENQUEUE,
4784 .mos_opc_end = LDLM_LAST_OPC,
4785 .mos_hs = mdt_dlm_ops
4788 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
4789 .mos_opc_end = LLOG_LAST_OPC,
4790 .mos_hs = mdt_llog_ops
4793 .mos_opc_start = SEC_CTX_INIT,
4794 .mos_opc_end = SEC_LAST_OPC,
4795 .mos_hs = mdt_sec_ctx_ops
4802 static struct mdt_handler mdt_readpage_ops[] = {
4803 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
4804 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
4805 #ifdef HAVE_SPLIT_SUPPORT
4806 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
4810 * XXX: this is ugly and should be fixed one day, see mdc_close() for
4811 * detailed comments. --umka
4813 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
4814 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
4817 static struct mdt_opc_slice mdt_readpage_handlers[] = {
4819 .mos_opc_start = MDS_GETATTR,
4820 .mos_opc_end = MDS_LAST_OPC,
4821 .mos_hs = mdt_readpage_ops
4828 static struct mdt_handler mdt_xmds_ops[] = {
4829 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
4830 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
4831 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
4832 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
4835 static struct mdt_opc_slice mdt_xmds_handlers[] = {
4837 .mos_opc_start = MDS_GETATTR,
4838 .mos_opc_end = MDS_LAST_OPC,
4839 .mos_hs = mdt_xmds_ops
4842 .mos_opc_start = OBD_PING,
4843 .mos_opc_end = OBD_LAST_OPC,
4844 .mos_hs = mdt_obd_ops
4847 .mos_opc_start = SEC_CTX_INIT,
4848 .mos_opc_end = SEC_LAST_OPC,
4849 .mos_hs = mdt_sec_ctx_ops
4856 static struct mdt_handler mdt_seq_ops[] = {
4857 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
4860 static struct mdt_opc_slice mdt_seq_handlers[] = {
4862 .mos_opc_start = SEQ_QUERY,
4863 .mos_opc_end = SEQ_LAST_OPC,
4864 .mos_hs = mdt_seq_ops
4871 static struct mdt_handler mdt_fld_ops[] = {
4872 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
4875 static struct mdt_opc_slice mdt_fld_handlers[] = {
4877 .mos_opc_start = FLD_QUERY,
4878 .mos_opc_end = FLD_LAST_OPC,
4879 .mos_hs = mdt_fld_ops
4886 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
4887 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
4888 MODULE_LICENSE("GPL");
4890 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
4891 "number of mdt service threads to start");
4893 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);