1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 * Lustre Metadata Server (MDS) filesystem interface code
7 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
8 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * This file is part of Lustre, http://www.lustre.org.
12 * Lustre is free software; you can redistribute it and/or
13 * modify it under the terms of version 2 of the GNU General Public
14 * License as published by the Free Software Foundation.
16 * Lustre is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with Lustre; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 # define EXPORT_SYMTAB
29 #define DEBUG_SUBSYSTEM S_MDS
31 #include <linux/module.h>
32 #include <linux/kmod.h>
33 #include <linux/version.h>
34 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
35 #include <linux/mount.h>
37 #include <linux/lustre_mds.h>
38 #include <linux/obd_class.h>
39 #include <linux/obd_support.h>
40 #include <linux/lustre_lib.h>
41 #include <linux/lustre_fsfilt.h>
42 #include <portals/list.h>
44 #include <linux/lustre_smfs.h>
45 #include "mds_internal.h"
47 /* This limit is arbitrary, but for now we fit it in 1 page (32k clients) */
48 #define MDS_MAX_CLIENTS (PAGE_SIZE * 8)
49 #define MDS_MAX_CLIENT_WORDS (MDS_MAX_CLIENTS / sizeof(unsigned long))
51 #define LAST_RCVD "last_rcvd"
52 #define LOV_OBJID "lov_objid"
54 /* Add client data to the MDS. We use a bitmap to locate a free space
55 * in the last_rcvd file if cl_off is -1 (i.e. a new client).
56 * Otherwise, we have just read the data from the last_rcvd file and
59 int mds_client_add(struct obd_device *obd, struct mds_obd *mds,
60 struct mds_export_data *med, int cl_idx)
62 unsigned long *bitmap = mds->mds_client_bitmap;
63 int new_client = (cl_idx == -1);
66 LASSERT(bitmap != NULL);
68 /* XXX if mcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
69 if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
72 /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
73 * there's no need for extra complication here
76 cl_idx = find_first_zero_bit(bitmap, MDS_MAX_CLIENTS);
78 if (cl_idx >= MDS_MAX_CLIENTS) {
79 CERROR("no room for clients - fix MDS_MAX_CLIENTS\n");
82 if (test_and_set_bit(cl_idx, bitmap)) {
83 cl_idx = find_next_zero_bit(bitmap, MDS_MAX_CLIENTS,
88 if (test_and_set_bit(cl_idx, bitmap)) {
89 CERROR("MDS client %d: bit already set in bitmap!!\n",
95 CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
96 cl_idx, med->med_mcd->mcd_uuid);
98 med->med_idx = cl_idx;
99 med->med_off = le32_to_cpu(mds->mds_server_data->msd_client_start) +
100 (cl_idx * le16_to_cpu(mds->mds_server_data->msd_client_size));
103 struct lvfs_run_ctxt saved;
104 loff_t off = med->med_off;
105 struct file *file = mds->mds_rcvd_filp;
108 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
109 rc = fsfilt_write_record(obd, file, med->med_mcd,
110 sizeof(*med->med_mcd), &off, 1);
111 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
115 CDEBUG(D_INFO, "wrote client mcd at idx %u off %llu (len %u)\n",
116 med->med_idx, med->med_off,
117 (unsigned int)sizeof(*med->med_mcd));
122 int mds_client_free(struct obd_export *exp, int clear_client)
124 struct mds_export_data *med = &exp->exp_mds_data;
125 struct mds_obd *mds = &exp->exp_obd->u.mds;
126 struct obd_device *obd = exp->exp_obd;
127 struct mds_client_data zero_mcd;
128 struct lvfs_run_ctxt saved;
130 unsigned long *bitmap = mds->mds_client_bitmap;
135 /* XXX if mcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
136 if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
137 GOTO(free_and_out, 0);
139 CDEBUG(D_INFO, "freeing client at idx %u (%lld)with UUID '%s'\n",
140 med->med_idx, med->med_off, med->med_mcd->mcd_uuid);
144 /* Clear the bit _after_ zeroing out the client so we don't
145 race with mds_client_add and zero out new clients.*/
146 if (!test_bit(med->med_idx, bitmap)) {
147 CERROR("MDS client %u: bit already clear in bitmap!!\n",
153 memset(&zero_mcd, 0, sizeof zero_mcd);
154 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
155 rc = fsfilt_write_record(obd, mds->mds_rcvd_filp, &zero_mcd,
156 sizeof(zero_mcd), &med->med_off, 1);
157 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
159 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
160 "zeroing out client %s idx %u in %s rc %d\n",
161 med->med_mcd->mcd_uuid, med->med_idx, LAST_RCVD, rc);
164 if (!test_and_clear_bit(med->med_idx, bitmap)) {
165 CERROR("MDS client %u: bit already clear in bitmap!!\n",
171 /* Make sure the server's last_transno is up to date. Do this
172 * after the client is freed so we know all the client's
173 * transactions have been committed. */
174 mds_update_server_data(exp->exp_obd, 1);
177 OBD_FREE(med->med_mcd, sizeof(*med->med_mcd));
182 static int mds_server_free_data(struct mds_obd *mds)
184 OBD_FREE(mds->mds_client_bitmap,
185 MDS_MAX_CLIENT_WORDS * sizeof(unsigned long));
186 OBD_FREE(mds->mds_server_data, sizeof(*mds->mds_server_data));
187 mds->mds_server_data = NULL;
192 static int mds_read_last_rcvd(struct obd_device *obd, struct file *file)
194 struct mds_obd *mds = &obd->u.mds;
195 struct mds_server_data *msd;
196 struct mds_client_data *mcd = NULL;
198 unsigned long last_rcvd_size = file->f_dentry->d_inode->i_size;
203 /* ensure padding in the struct is the correct size */
204 LASSERT(offsetof(struct mds_server_data, msd_padding) +
205 sizeof(msd->msd_padding) == MDS_LR_SERVER_SIZE);
206 LASSERT(offsetof(struct mds_client_data, mcd_padding) +
207 sizeof(mcd->mcd_padding) == MDS_LR_CLIENT_SIZE);
209 OBD_ALLOC_WAIT(msd, sizeof(*msd));
213 OBD_ALLOC_WAIT(mds->mds_client_bitmap,
214 MDS_MAX_CLIENT_WORDS * sizeof(unsigned long));
215 if (!mds->mds_client_bitmap) {
216 OBD_FREE(msd, sizeof(*msd));
220 mds->mds_server_data = msd;
222 if (last_rcvd_size == 0) {
223 CWARN("%s: initializing new %s\n", obd->obd_name, LAST_RCVD);
225 memcpy(msd->msd_uuid, obd->obd_uuid.uuid,sizeof(msd->msd_uuid));
226 msd->msd_last_transno = 0;
227 mount_count = msd->msd_mount_count = 0;
228 msd->msd_server_size = cpu_to_le32(MDS_LR_SERVER_SIZE);
229 msd->msd_client_start = cpu_to_le32(MDS_LR_CLIENT_START);
230 msd->msd_client_size = cpu_to_le16(MDS_LR_CLIENT_SIZE);
231 msd->msd_feature_rocompat = cpu_to_le32(MDS_ROCOMPAT_LOVOBJID);
233 rc = fsfilt_read_record(obd, file, msd, sizeof(*msd), &off);
235 CERROR("error reading MDS %s: rc = %d\n", LAST_RCVD, rc);
238 if (strcmp(msd->msd_uuid, obd->obd_uuid.uuid) != 0) {
239 CERROR("OBD UUID %s does not match last_rcvd UUID %s\n",
240 obd->obd_uuid.uuid, msd->msd_uuid);
241 GOTO(err_msd, rc = -EINVAL);
243 mount_count = le64_to_cpu(msd->msd_mount_count);
245 if (msd->msd_feature_incompat & ~cpu_to_le32(MDS_INCOMPAT_SUPP)) {
246 CERROR("unsupported incompat feature %x\n",
247 le32_to_cpu(msd->msd_feature_incompat) &
249 GOTO(err_msd, rc = -EINVAL);
251 /* XXX updating existing b_devel fs only, can be removed in future */
252 msd->msd_feature_rocompat = cpu_to_le32(MDS_ROCOMPAT_LOVOBJID);
253 if (msd->msd_feature_rocompat & ~cpu_to_le32(MDS_ROCOMPAT_SUPP)) {
254 CERROR("unsupported read-only feature %x\n",
255 le32_to_cpu(msd->msd_feature_rocompat) &
257 /* Do something like remount filesystem read-only */
258 GOTO(err_msd, rc = -EINVAL);
261 mds->mds_last_transno = le64_to_cpu(msd->msd_last_transno);
263 CDEBUG(D_INODE, "%s: server last_transno: "LPU64"\n",
264 obd->obd_name, mds->mds_last_transno);
265 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
266 obd->obd_name, mount_count + 1);
267 CDEBUG(D_INODE, "%s: server data size: %u\n",
268 obd->obd_name, le32_to_cpu(msd->msd_server_size));
269 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
270 obd->obd_name, le32_to_cpu(msd->msd_client_start));
271 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
272 obd->obd_name, le32_to_cpu(msd->msd_client_size));
273 CDEBUG(D_INODE, "%s: last_rcvd size: %lu\n",
274 obd->obd_name, last_rcvd_size);
275 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
276 last_rcvd_size <= le32_to_cpu(msd->msd_client_start) ? 0 :
277 (last_rcvd_size - le32_to_cpu(msd->msd_client_start)) /
278 le16_to_cpu(msd->msd_client_size));
280 /* When we do a clean MDS shutdown, we save the last_transno into
281 * the header. If we find clients with higher last_transno values
282 * then those clients may need recovery done. */
283 for (cl_idx = 0, off = le32_to_cpu(msd->msd_client_start);
284 off < last_rcvd_size; cl_idx++) {
286 struct obd_export *exp;
287 struct mds_export_data *med;
290 OBD_ALLOC_WAIT(mcd, sizeof(*mcd));
292 GOTO(err_client, rc = -ENOMEM);
295 /* Don't assume off is incremented properly by
296 * fsfilt_read_record(), in case sizeof(*mcd)
297 * isn't the same as msd->msd_client_size. */
298 off = le32_to_cpu(msd->msd_client_start) +
299 cl_idx * le16_to_cpu(msd->msd_client_size);
300 rc = fsfilt_read_record(obd, file, mcd, sizeof(*mcd), &off);
302 CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
303 LAST_RCVD, cl_idx, off, rc);
304 break; /* read error shouldn't cause startup to fail */
307 if (mcd->mcd_uuid[0] == '\0') {
308 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
313 last_transno = le64_to_cpu(mcd->mcd_last_transno);
315 /* These exports are cleaned up by mds_disconnect(), so they
316 * need to be set up like real exports as mds_connect() does.
318 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
319 " srv lr: "LPU64"\n", mcd->mcd_uuid, cl_idx,
320 last_transno, le64_to_cpu(msd->msd_last_transno));
322 exp = class_new_export(obd);
324 GOTO(err_client, rc = -ENOMEM);
326 memcpy(&exp->exp_client_uuid.uuid, mcd->mcd_uuid,
327 sizeof exp->exp_client_uuid.uuid);
328 med = &exp->exp_mds_data;
330 mds_client_add(obd, mds, med, cl_idx);
331 /* create helper if export init gets more complex */
332 INIT_LIST_HEAD(&med->med_open_head);
333 spin_lock_init(&med->med_open_lock);
336 exp->exp_replay_needed = 1;
337 obd->obd_recoverable_clients++;
338 obd->obd_max_recoverable_clients++;
339 class_export_put(exp);
341 CDEBUG(D_OTHER, "client at idx %d has last_transno = "LPU64"\n",
342 cl_idx, last_transno);
344 if (last_transno > mds->mds_last_transno)
345 mds->mds_last_transno = last_transno;
348 obd->obd_last_committed = mds->mds_last_transno;
349 if (obd->obd_recoverable_clients) {
350 CWARN("RECOVERY: service %s, %d recoverable clients, "
351 "last_transno "LPU64"\n", obd->obd_name,
352 obd->obd_recoverable_clients, mds->mds_last_transno);
353 obd->obd_next_recovery_transno = obd->obd_last_committed + 1;
354 obd->obd_recovering = 1;
358 OBD_FREE(mcd, sizeof(*mcd));
360 mds->mds_mount_count = mount_count + 1;
361 msd->msd_mount_count = cpu_to_le64(mds->mds_mount_count);
363 /* save it, so mount count and last_transno is current */
364 rc = mds_update_server_data(obd, 1);
369 class_disconnect_exports(obd, 0);
371 mds_server_free_data(mds);
375 static int mds_fs_post_setup(struct obd_device *obd)
377 struct mds_obd *mds = &obd->u.mds;
378 struct dentry *de = mds_fid2dentry(mds, &mds->mds_rootfid, NULL);
381 rc = fsfilt_post_setup(obd);
385 fsfilt_set_fs_flags(obd, de->d_inode,
386 SM_DO_REC | SM_DO_COW);
387 fsfilt_set_fs_flags(obd, mds->mds_pending_dir->d_inode,
388 SM_DO_REC | SM_DO_COW);
389 fsfilt_set_mds_flags(obd, mds->mds_sb);
395 int mds_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
397 struct mds_obd *mds = &obd->u.mds;
398 struct lvfs_run_ctxt saved;
399 struct dentry *dentry;
404 rc = cleanup_group_info();
408 mds->mds_vfsmnt = mnt;
409 mds->mds_sb = mnt->mnt_root->d_inode->i_sb;
411 fsfilt_setup(obd, mds->mds_sb);
413 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
414 obd->obd_lvfs_ctxt.pwdmnt = mnt;
415 obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
416 obd->obd_lvfs_ctxt.fs = get_ds();
417 obd->obd_lvfs_ctxt.cb_ops = mds_lvfs_ops;
419 /* setup the directory tree */
420 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
421 dentry = simple_mkdir(current->fs->pwd, "ROOT", 0755, 0);
422 if (IS_ERR(dentry)) {
423 rc = PTR_ERR(dentry);
424 CERROR("cannot create ROOT directory: rc = %d\n", rc);
428 mds->mds_rootfid.id = dentry->d_inode->i_ino;
429 mds->mds_rootfid.generation = dentry->d_inode->i_generation;
430 mds->mds_rootfid.f_type = S_IFDIR;
434 dentry = lookup_one_len("__iopen__", current->fs->pwd,
435 strlen("__iopen__"));
436 if (IS_ERR(dentry)) {
437 rc = PTR_ERR(dentry);
438 CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
441 if (!dentry->d_inode) {
443 CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
446 mds->mds_fid_de = dentry;
448 dentry = simple_mkdir(current->fs->pwd, "PENDING", 0777, 1);
449 if (IS_ERR(dentry)) {
450 rc = PTR_ERR(dentry);
451 CERROR("cannot create PENDING directory: rc = %d\n", rc);
454 mds->mds_pending_dir = dentry;
456 dentry = simple_mkdir(current->fs->pwd, "LOGS", 0777, 1);
457 if (IS_ERR(dentry)) {
458 rc = PTR_ERR(dentry);
459 CERROR("cannot create LOGS directory: rc = %d\n", rc);
460 GOTO(err_pending, rc);
462 mds->mds_logs_dir = dentry;
464 dentry = simple_mkdir(current->fs->pwd, "OBJECTS", 0777, 1);
465 if (IS_ERR(dentry)) {
466 rc = PTR_ERR(dentry);
467 CERROR("cannot create OBJECTS directory: rc = %d\n", rc);
470 mds->mds_objects_dir = dentry;
472 dentry = simple_mkdir(current->fs->pwd, "FIDS", 0777, 1);
473 if (IS_ERR(dentry)) {
474 rc = PTR_ERR(dentry);
475 CERROR("cannot create FIDS directory: rc = %d\n", rc);
478 mds->mds_fids_dir = dentry;
480 /* open and test the last rcvd file */
481 file = filp_open(LAST_RCVD, O_RDWR | O_CREAT, 0644);
484 CERROR("cannot open/create %s file: rc = %d\n", LAST_RCVD, rc);
485 GOTO(err_objects, rc = PTR_ERR(file));
487 mds->mds_rcvd_filp = file;
488 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
489 CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
490 file->f_dentry->d_inode->i_mode);
491 GOTO(err_last_rcvd, rc = -ENOENT);
494 rc = mds_read_last_rcvd(obd, file);
496 CERROR("cannot read %s: rc = %d\n", LAST_RCVD, rc);
497 GOTO(err_last_rcvd, rc);
500 /* open and test the lov objd file */
501 file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
504 CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
505 GOTO(err_client, rc = PTR_ERR(file));
507 mds->mds_lov_objid_filp = file;
508 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
509 CERROR("%s is not a regular file!: mode = %o\n", LOV_OBJID,
510 file->f_dentry->d_inode->i_mode);
511 GOTO(err_lov_objid, rc = -ENOENT);
515 rc = mds_fs_post_setup(obd);
517 CERROR("can not post setup fsfilt\n");
519 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
523 if (mds->mds_lov_objid_filp && filp_close(mds->mds_lov_objid_filp, 0))
524 CERROR("can't close %s after error\n", LOV_OBJID);
526 class_disconnect_exports(obd, 0);
528 if (mds->mds_rcvd_filp && filp_close(mds->mds_rcvd_filp, 0))
529 CERROR("can't close %s after error\n", LAST_RCVD);
531 dput(mds->mds_fids_dir);
533 dput(mds->mds_objects_dir);
535 dput(mds->mds_logs_dir);
537 dput(mds->mds_pending_dir);
539 dput(mds->mds_fid_de);
543 static int mds_fs_post_cleanup(struct obd_device *obd)
546 rc = fsfilt_post_cleanup(obd);
550 int mds_fs_cleanup(struct obd_device *obd, int flags)
552 struct mds_obd *mds = &obd->u.mds;
553 struct lvfs_run_ctxt saved;
556 if (flags & OBD_OPT_FAILOVER)
557 CERROR("%s: shutting down for failover; client state will"
558 " be preserved.\n", obd->obd_name);
560 class_disconnect_exports(obd, flags); /* cleans up client info too */
561 mds_server_free_data(mds);
563 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
564 if (mds->mds_rcvd_filp) {
565 rc = filp_close(mds->mds_rcvd_filp, 0);
566 mds->mds_rcvd_filp = NULL;
568 CERROR("%s file won't close, rc=%d\n", LAST_RCVD, rc);
570 if (mds->mds_lov_objid_filp) {
571 rc = filp_close(mds->mds_lov_objid_filp, 0);
572 mds->mds_lov_objid_filp = NULL;
574 CERROR("%s file won't close, rc=%d\n", LOV_OBJID, rc);
576 if (mds->mds_fids_dir != NULL) {
577 l_dput(mds->mds_fids_dir);
578 mds->mds_fids_dir = NULL;
580 if (mds->mds_objects_dir != NULL) {
581 l_dput(mds->mds_objects_dir);
582 mds->mds_objects_dir = NULL;
584 if (mds->mds_logs_dir) {
585 l_dput(mds->mds_logs_dir);
586 mds->mds_logs_dir = NULL;
588 if (mds->mds_pending_dir) {
589 l_dput(mds->mds_pending_dir);
590 mds->mds_pending_dir = NULL;
592 rc = mds_fs_post_cleanup(obd);
594 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
595 shrink_dcache_parent(mds->mds_fid_de);
596 dput(mds->mds_fid_de);
601 /* Creates an object with the same name as its fid. Because this is not at all
602 * performance sensitive, it is accomplished by creating a file, checking the
603 * fid, and renaming it. */
604 int mds_obd_create(struct obd_export *exp, struct obdo *oa,
605 struct lov_stripe_md **ea, struct obd_trans_info *oti)
607 struct mds_obd *mds = &exp->exp_obd->u.mds;
608 struct inode *parent_inode = mds->mds_objects_dir->d_inode;
609 unsigned int tmpname = ll_insecure_random_int();
611 struct dentry *new_child;
612 struct lvfs_run_ctxt saved;
613 char fidname[LL_FID_NAMELEN];
615 int rc = 0, err, namelen;
618 push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
620 sprintf(fidname, "OBJECTS/%u", tmpname);
621 filp = filp_open(fidname, O_CREAT | O_EXCL, 0644);
625 CERROR("impossible object name collision %u\n",
629 CERROR("error creating tmp object %u: rc %d\n", tmpname, rc);
633 LASSERT(mds->mds_objects_dir == filp->f_dentry->d_parent);
635 oa->o_id = filp->f_dentry->d_inode->i_ino;
636 oa->o_generation = filp->f_dentry->d_inode->i_generation;
637 namelen = ll_fid2str(fidname, oa->o_id, oa->o_generation);
639 down(&parent_inode->i_sem);
640 new_child = lookup_one_len(fidname, mds->mds_objects_dir, namelen);
642 if (IS_ERR(new_child)) {
643 CERROR("getting neg dentry for obj rename: %d\n", rc);
644 GOTO(out_close, rc = PTR_ERR(new_child));
646 if (new_child->d_inode != NULL) {
647 CERROR("impossible non-negative obj dentry " LPU64":%u!\n",
648 oa->o_id, oa->o_generation);
652 handle = fsfilt_start(exp->exp_obd, mds->mds_objects_dir->d_inode,
653 FSFILT_OP_RENAME, NULL);
655 GOTO(out_dput, rc = PTR_ERR(handle));
658 rc = vfs_rename(mds->mds_objects_dir->d_inode, filp->f_dentry,
659 mds->mds_objects_dir->d_inode, new_child);
662 CERROR("error renaming new object "LPU64":%u: rc %d\n",
663 oa->o_id, oa->o_generation, rc);
665 err = fsfilt_commit(exp->exp_obd, mds->mds_sb,
666 mds->mds_objects_dir->d_inode, handle, 0);
668 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
669 oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLGROUP;
676 up(&parent_inode->i_sem);
677 err = filp_close(filp, 0);
679 CERROR("closing tmpfile %u: rc %d\n", tmpname, rc);
684 pop_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
688 int mds_obd_destroy(struct obd_export *exp, struct obdo *oa,
689 struct lov_stripe_md *ea, struct obd_trans_info *oti)
691 struct mds_obd *mds = &exp->exp_obd->u.mds;
692 struct inode *parent_inode = mds->mds_objects_dir->d_inode;
693 struct obd_device *obd = exp->exp_obd;
694 struct lvfs_run_ctxt saved;
695 char fidname[LL_FID_NAMELEN];
698 int err, namelen, rc = 0;
701 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
703 namelen = ll_fid2str(fidname, oa->o_id, oa->o_generation);
705 down(&parent_inode->i_sem);
706 de = lookup_one_len(fidname, mds->mds_objects_dir, namelen);
707 if (de == NULL || de->d_inode == NULL) {
708 CERROR("destroying non-existent object "LPU64" %s\n",
710 GOTO(out_dput, rc = IS_ERR(de) ? PTR_ERR(de) : -ENOENT);
713 /* Stripe count is 1 here since this is some MDS specific stuff
714 that is unlinked, not spanned across multiple OSTs */
715 handle = fsfilt_start_log(obd, mds->mds_objects_dir->d_inode,
716 FSFILT_OP_UNLINK, oti, 1);
719 GOTO(out_dput, rc = PTR_ERR(handle));
721 rc = vfs_unlink(mds->mds_objects_dir->d_inode, de);
723 CERROR("error destroying object "LPU64":%u: rc %d\n",
724 oa->o_id, oa->o_generation, rc);
726 err = fsfilt_commit(obd, mds->mds_sb, mds->mds_objects_dir->d_inode,
733 up(&parent_inode->i_sem);
734 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);