1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * lustre/mds/mds_orphan.c
6 * Copyright (c) 2001-2003 Cluster File Systems, Inc.
7 * Author: Peter Braam <braam@clusterfs.com>
8 * Author: Andreas Dilger <adilger@clusterfs.com>
9 * Author: Phil Schwan <phil@clusterfs.com>
11 * This file is part of Lustre, http://www.lustre.org.
13 * Lustre is free software; you can redistribute it and/or
14 * modify it under the terms of version 2 of the GNU General Public
15 * License as published by the Free Software Foundation.
17 * Lustre is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with Lustre; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 /* code for handling open unlinked files */
29 #define DEBUG_SUBSYSTEM S_MDS
31 #include <linux/config.h>
32 #include <linux/module.h>
33 #include <linux/version.h>
35 #include <libcfs/list.h>
36 #include <linux/obd_class.h>
37 #include <linux/lustre_fsfilt.h>
38 #include <linux/lustre_commit_confd.h>
39 #include <linux/lvfs.h>
41 #include "mds_internal.h"
44 * used when destroying orphanes and from mds_reint_unlink() when MDS wants to
45 * destroy objects on OSS.
48 mds_unlink_object(struct mds_obd *mds, struct inode *inode,
49 struct lov_mds_md *lmm, int lmm_size,
50 struct llog_cookie *logcookies,
51 int log_unlink, int async)
53 struct lov_stripe_md *lsm = NULL;
54 struct obd_trans_info oti = { 0 };
62 rc = obd_unpackmd(mds->mds_dt_exp, &lsm, lmm, lmm_size);
64 CERROR("Error unpack md %p\n", lmm);
67 LASSERT(rc >= sizeof(*lsm));
73 GOTO(out_free_memmd, rc = -ENOMEM);
74 oa->o_id = lsm->lsm_object_id;
75 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
76 oa->o_mode = inode->i_mode & S_IFMT;
77 oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
79 if (log_unlink && logcookies) {
80 oa->o_valid |= OBD_MD_FLCOOKIE;
81 oti.oti_logcookies = logcookies;
84 CDEBUG(D_INODE, "destroy OSS object %d/%d\n",
85 (int)oa->o_id, (int)oa->o_gr);
88 oti.oti_flags |= OBD_MODE_ASYNC;
90 rc = obd_destroy(mds->mds_dt_exp, oa, lsm, &oti);
93 obd_free_memmd(mds->mds_dt_exp, &lsm);
97 static int mds_unlink_orphan(struct obd_device *obd, struct dentry *dchild,
98 struct inode *inode, struct inode *pending_dir)
100 struct mds_obd *mds = &obd->u.mds;
101 struct lov_mds_md *lmm = NULL;
102 struct llog_cookie *logcookies = NULL;
103 int lmm_size, log_unlink = 0;
108 LASSERT(mds->mds_dt_obd != NULL);
109 LASSERT(obd->obd_recovering == 0);
111 /* We don't need to do any of these other things for orhpan dirs,
112 * especially not mds_get_md (may get a default LOV EA, bug 4554) */
113 if (S_ISDIR(inode->i_mode)) {
114 rc = vfs_rmdir(pending_dir, dchild);
116 CERROR("error %d unlinking dir %*s from PENDING\n",
117 rc, dchild->d_name.len, dchild->d_name.name);
121 lmm_size = mds->mds_max_mdsize;
122 OBD_ALLOC(lmm, lmm_size);
126 rc = mds_get_md(obd, inode, lmm, &lmm_size, 1, 0);
128 GOTO(out_free_lmm, rc);
130 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK, NULL,
131 le32_to_cpu(lmm->lmm_stripe_count));
132 if (IS_ERR(handle)) {
133 rc = PTR_ERR(handle);
134 CERROR("error fsfilt_start: %d\n", rc);
136 GOTO(out_free_lmm, rc);
139 rc = vfs_unlink(pending_dir, dchild);
141 CERROR("error %d unlinking orphan %.*s from PENDING\n",
142 rc, dchild->d_name.len, dchild->d_name.name);
143 } else if (lmm_size) {
144 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
145 if (logcookies == NULL)
147 else if (mds_log_op_unlink(obd, inode, lmm,lmm_size,logcookies,
148 mds->mds_max_cookiesize, NULL) > 0)
151 err = fsfilt_commit(obd, mds->mds_sb, pending_dir, handle, 0);
153 CERROR("error committing orphan unlink: %d\n", err);
157 rc = mds_unlink_object(mds, inode, lmm, lmm_size,
158 logcookies, log_unlink, 0);
161 if (logcookies != NULL)
162 OBD_FREE(logcookies, mds->mds_max_cookiesize);
164 OBD_FREE(lmm, mds->mds_max_mdsize);
168 int mds_cleanup_orphans(struct obd_device *obd)
170 struct mds_obd *mds = &obd->u.mds;
171 struct lvfs_run_ctxt saved;
173 struct dentry *dchild, *dentry;
174 struct vfsmount *mnt;
175 struct inode *child_inode, *pending_dir = mds->mds_pending_dir->d_inode;
176 struct l_linux_dirent *dirent, *n;
177 struct list_head dentry_list;
178 char d_name[LL_ID_NAMELEN];
181 int rc = 0, item = 0, namlen;
184 LASSERT(obd->obd_recovering == 0);
185 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
186 dentry = dget(mds->mds_pending_dir);
188 GOTO(err_pop, rc = PTR_ERR(dentry));
189 mnt = mntget(mds->mds_vfsmnt);
191 GOTO(err_mntget, rc = PTR_ERR(mnt));
193 file = dentry_open(mds->mds_pending_dir, mds->mds_vfsmnt,
194 O_RDONLY | O_LARGEFILE);
196 GOTO(err_pop, rc = PTR_ERR(file));
198 INIT_LIST_HEAD(&dentry_list);
199 rc = l_readdir(file, &dentry_list);
204 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
206 list_del(&dirent->lld_list);
208 namlen = strlen(dirent->lld_name);
209 LASSERT(sizeof(d_name) >= namlen + 1);
210 strcpy(d_name, dirent->lld_name);
211 inum = dirent->lld_ino;
212 OBD_FREE(dirent, sizeof(*dirent));
214 CDEBUG(D_INODE, "entry "LPU64" of PENDING DIR: %s\n",
217 if (((namlen == 1) && !strcmp(d_name, ".")) ||
218 ((namlen == 2) && !strcmp(d_name, "..")) || inum == 0)
221 down(&pending_dir->i_sem);
222 dchild = lookup_one_len(d_name, mds->mds_pending_dir, namlen);
223 if (IS_ERR(dchild)) {
224 up(&pending_dir->i_sem);
225 GOTO(err_out, rc = PTR_ERR(dchild));
227 if (!dchild->d_inode) {
228 CERROR("orphan %s has been removed\n", d_name);
232 if (is_bad_inode(dchild->d_inode)) {
233 CERROR("bad orphan inode found %lu/%u\n",
234 dchild->d_inode->i_ino,
235 dchild->d_inode->i_generation);
236 GOTO(next, rc = -ENOENT);
239 child_inode = dchild->d_inode;
240 DOWN_READ_I_ALLOC_SEM(child_inode);
241 if (mds_orphan_open_count(child_inode)) {
242 UP_READ_I_ALLOC_SEM(child_inode);
243 CWARN("orphan %s re-opened during recovery\n", d_name);
246 UP_READ_I_ALLOC_SEM(child_inode);
247 rc = mds_unlink_orphan(obd, dchild, child_inode, pending_dir);
250 CWARN("removed orphan %s from MDS and OST\n", d_name);
252 CDEBUG(D_INODE, "removed orphan %s from MDS/OST failed,"
253 " rc = %d\n", d_name, rc);
258 up(&pending_dir->i_sem);
261 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
262 list_del(&dirent->lld_list);
263 OBD_FREE(dirent, sizeof(*dirent));
266 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
272 l_dput(mds->mds_pending_dir);