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);
87 oti.oti_async = async;
88 rc = obd_destroy(mds->mds_dt_exp, oa, lsm, &oti);
91 obd_free_memmd(mds->mds_dt_exp, &lsm);
95 static int mds_unlink_orphan(struct obd_device *obd, struct dentry *dchild,
96 struct inode *inode, struct inode *pending_dir)
98 struct mds_obd *mds = &obd->u.mds;
99 struct lov_mds_md *lmm = NULL;
100 struct llog_cookie *logcookies = NULL;
101 int lmm_size, log_unlink = 0;
106 LASSERT(mds->mds_dt_obd != NULL);
107 LASSERT(obd->obd_recovering == 0);
109 /* We don't need to do any of these other things for orhpan dirs,
110 * especially not mds_get_md (may get a default LOV EA, bug 4554) */
111 if (S_ISDIR(inode->i_mode)) {
112 rc = vfs_rmdir(pending_dir, dchild);
114 CERROR("error %d unlinking dir %*s from PENDING\n",
115 rc, dchild->d_name.len, dchild->d_name.name);
119 lmm_size = mds->mds_max_mdsize;
120 OBD_ALLOC(lmm, lmm_size);
124 rc = mds_get_md(obd, inode, lmm, &lmm_size, 1, 0);
126 GOTO(out_free_lmm, rc);
128 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK, NULL,
129 le32_to_cpu(lmm->lmm_stripe_count));
130 if (IS_ERR(handle)) {
131 rc = PTR_ERR(handle);
132 CERROR("error fsfilt_start: %d\n", rc);
134 GOTO(out_free_lmm, rc);
137 rc = vfs_unlink(pending_dir, dchild);
139 CERROR("error %d unlinking orphan %.*s from PENDING\n",
140 rc, dchild->d_name.len, dchild->d_name.name);
141 } else if (lmm_size) {
142 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
143 if (logcookies == NULL)
145 else if (mds_log_op_unlink(obd, inode, lmm,lmm_size,logcookies,
146 mds->mds_max_cookiesize, NULL) > 0)
149 err = fsfilt_commit(obd, mds->mds_sb, pending_dir, handle, 0);
151 CERROR("error committing orphan unlink: %d\n", err);
155 rc = mds_unlink_object(mds, inode, lmm, lmm_size,
156 logcookies, log_unlink, 0);
159 if (logcookies != NULL)
160 OBD_FREE(logcookies, mds->mds_max_cookiesize);
162 OBD_FREE(lmm, mds->mds_max_mdsize);
166 int mds_cleanup_orphans(struct obd_device *obd)
168 struct mds_obd *mds = &obd->u.mds;
169 struct lvfs_run_ctxt saved;
171 struct dentry *dchild, *dentry;
172 struct vfsmount *mnt;
173 struct inode *child_inode, *pending_dir = mds->mds_pending_dir->d_inode;
174 struct l_linux_dirent *dirent, *n;
175 struct list_head dentry_list;
176 char d_name[LL_ID_NAMELEN];
179 int rc = 0, item = 0, namlen;
182 LASSERT(obd->obd_recovering == 0);
183 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
184 dentry = dget(mds->mds_pending_dir);
186 GOTO(err_pop, rc = PTR_ERR(dentry));
187 mnt = mntget(mds->mds_vfsmnt);
189 GOTO(err_mntget, rc = PTR_ERR(mnt));
191 file = dentry_open(mds->mds_pending_dir, mds->mds_vfsmnt,
192 O_RDONLY | O_LARGEFILE);
194 GOTO(err_pop, rc = PTR_ERR(file));
196 INIT_LIST_HEAD(&dentry_list);
197 rc = l_readdir(file, &dentry_list);
202 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
204 list_del(&dirent->lld_list);
206 namlen = strlen(dirent->lld_name);
207 LASSERT(sizeof(d_name) >= namlen + 1);
208 strcpy(d_name, dirent->lld_name);
209 inum = dirent->lld_ino;
210 OBD_FREE(dirent, sizeof(*dirent));
212 CDEBUG(D_INODE, "entry "LPU64" of PENDING DIR: %s\n",
215 if (((namlen == 1) && !strcmp(d_name, ".")) ||
216 ((namlen == 2) && !strcmp(d_name, "..")) || inum == 0)
219 down(&pending_dir->i_sem);
220 dchild = lookup_one_len(d_name, mds->mds_pending_dir, namlen);
221 if (IS_ERR(dchild)) {
222 up(&pending_dir->i_sem);
223 GOTO(err_out, rc = PTR_ERR(dchild));
225 if (!dchild->d_inode) {
226 CERROR("orphan %s has been removed\n", d_name);
230 if (is_bad_inode(dchild->d_inode)) {
231 CERROR("bad orphan inode found %lu/%u\n",
232 dchild->d_inode->i_ino,
233 dchild->d_inode->i_generation);
234 GOTO(next, rc = -ENOENT);
237 child_inode = dchild->d_inode;
238 DOWN_READ_I_ALLOC_SEM(child_inode);
239 if (mds_orphan_open_count(child_inode)) {
240 UP_READ_I_ALLOC_SEM(child_inode);
241 CWARN("orphan %s re-opened during recovery\n", d_name);
244 if (!mds_inode_is_orphan(child_inode)) {
245 UP_READ_I_ALLOC_SEM(child_inode);
246 CWARN("orphan %s has been removed by CLOSE\n", d_name);
249 mds_inode_unset_orphan(child_inode);
250 UP_READ_I_ALLOC_SEM(child_inode);
251 rc = mds_unlink_orphan(obd, dchild, child_inode, pending_dir);
254 CWARN("removed orphan %s from MDS and OST\n", d_name);
256 CDEBUG(D_INODE, "removed orphan %s from MDS/OST failed,"
257 " rc = %d\n", d_name, rc);
262 up(&pending_dir->i_sem);
265 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
266 list_del(&dirent->lld_list);
267 OBD_FREE(dirent, sizeof(*dirent));
270 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
276 l_dput(mds->mds_pending_dir);