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"
43 static int mds_osc_destroy_orphan(struct mds_obd *mds,
45 struct lov_mds_md *lmm,
47 struct llog_cookie *logcookies,
50 struct lov_stripe_md *lsm = NULL;
51 struct obd_trans_info oti = { 0 };
59 rc = obd_unpackmd(mds->mds_dt_exp, &lsm, lmm, lmm_size);
61 CERROR("Error unpack md %p\n", lmm);
64 LASSERT(rc >= sizeof(*lsm));
70 GOTO(out_free_memmd, rc = -ENOMEM);
71 oa->o_id = lsm->lsm_object_id;
72 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
73 oa->o_mode = inode->i_mode & S_IFMT;
74 oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
76 if (log_unlink && logcookies) {
77 oa->o_valid |= OBD_MD_FLCOOKIE;
78 oti.oti_logcookies = logcookies;
81 rc = obd_destroy(mds->mds_dt_exp, oa, lsm, &oti);
84 CDEBUG(D_INODE, "destroy orphan objid 0x"LPX64" on ost error "
85 "%d\n", lsm->lsm_object_id, rc);
87 obd_free_memmd(mds->mds_dt_exp, &lsm);
91 static int mds_unlink_orphan(struct obd_device *obd, struct dentry *dchild,
92 struct inode *inode, struct inode *pending_dir)
94 struct mds_obd *mds = &obd->u.mds;
95 struct lov_mds_md *lmm = NULL;
96 struct llog_cookie *logcookies = NULL;
97 int lmm_size, log_unlink = 0;
102 LASSERT(mds->mds_dt_obd != NULL);
104 /* We don't need to do any of these other things for orhpan dirs,
105 * especially not mds_get_md (may get a default LOV EA, bug 4554) */
106 if (S_ISDIR(inode->i_mode)) {
107 rc = vfs_rmdir(pending_dir, dchild);
109 CERROR("error %d unlinking dir %*s from PENDING\n",
110 rc, dchild->d_name.len, dchild->d_name.name);
114 lmm_size = mds->mds_max_mdsize;
115 OBD_ALLOC(lmm, lmm_size);
119 rc = mds_get_md(obd, inode, lmm, &lmm_size, 1, 0);
121 GOTO(out_free_lmm, rc);
123 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK, NULL,
124 le32_to_cpu(lmm->lmm_stripe_count));
125 if (IS_ERR(handle)) {
126 rc = PTR_ERR(handle);
127 CERROR("error fsfilt_start: %d\n", rc);
129 GOTO(out_free_lmm, rc);
132 rc = vfs_unlink(pending_dir, dchild);
134 CERROR("error %d unlinking orphan %.*s from PENDING\n",
135 rc, dchild->d_name.len, dchild->d_name.name);
136 } else if (lmm_size) {
137 OBD_ALLOC(logcookies, mds->mds_max_cookiesize);
138 if (logcookies == NULL)
140 else if (mds_log_op_unlink(obd, inode, lmm,lmm_size,logcookies,
141 mds->mds_max_cookiesize, NULL) > 0)
144 err = fsfilt_commit(obd, mds->mds_sb, pending_dir, handle, 0);
146 CERROR("error committing orphan unlink: %d\n", err);
150 rc = mds_osc_destroy_orphan(mds, inode, lmm, lmm_size,
151 logcookies, log_unlink);
154 if (logcookies != NULL)
155 OBD_FREE(logcookies, mds->mds_max_cookiesize);
157 OBD_FREE(lmm, mds->mds_max_mdsize);
161 int mds_cleanup_orphans(struct obd_device *obd)
163 struct mds_obd *mds = &obd->u.mds;
164 struct lvfs_run_ctxt saved;
166 struct dentry *dchild, *dentry;
167 struct vfsmount *mnt;
168 struct inode *child_inode, *pending_dir = mds->mds_pending_dir->d_inode;
169 struct l_linux_dirent *dirent, *n;
170 struct list_head dentry_list;
171 char d_name[LL_ID_NAMELEN];
174 int rc = 0, item = 0, namlen;
177 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
178 dentry = dget(mds->mds_pending_dir);
180 GOTO(err_pop, rc = PTR_ERR(dentry));
181 mnt = mntget(mds->mds_vfsmnt);
183 GOTO(err_mntget, rc = PTR_ERR(mnt));
185 file = dentry_open(mds->mds_pending_dir, mds->mds_vfsmnt,
186 O_RDONLY | O_LARGEFILE);
188 GOTO(err_pop, rc = PTR_ERR(file));
190 INIT_LIST_HEAD(&dentry_list);
191 rc = l_readdir(file, &dentry_list);
196 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
198 list_del(&dirent->lld_list);
200 namlen = strlen(dirent->lld_name);
201 LASSERT(sizeof(d_name) >= namlen + 1);
202 strcpy(d_name, dirent->lld_name);
203 inum = dirent->lld_ino;
204 OBD_FREE(dirent, sizeof(*dirent));
206 CDEBUG(D_INODE, "entry "LPU64" of PENDING DIR: %s\n",
209 if (((namlen == 1) && !strcmp(d_name, ".")) ||
210 ((namlen == 2) && !strcmp(d_name, "..")) || inum == 0)
213 down(&pending_dir->i_sem);
214 dchild = lookup_one_len(d_name, mds->mds_pending_dir, namlen);
215 if (IS_ERR(dchild)) {
216 up(&pending_dir->i_sem);
217 GOTO(err_out, rc = PTR_ERR(dchild));
219 if (!dchild->d_inode) {
220 CERROR("orphan %s has been removed\n", d_name);
224 if (is_bad_inode(dchild->d_inode)) {
225 CERROR("bad orphan inode found %lu/%u\n",
226 dchild->d_inode->i_ino,
227 dchild->d_inode->i_generation);
228 GOTO(next, rc = -ENOENT);
231 child_inode = dchild->d_inode;
232 DOWN_READ_I_ALLOC_SEM(child_inode);
233 if (mds_inode_is_orphan(child_inode) &&
234 mds_orphan_open_count(child_inode)) {
235 UP_READ_I_ALLOC_SEM(child_inode);
236 CWARN("orphan %s re-opened during recovery\n", d_name);
239 UP_READ_I_ALLOC_SEM(child_inode);
240 rc = mds_unlink_orphan(obd, dchild, child_inode, pending_dir);
243 CWARN("removed orphan %s from MDS and OST\n", d_name);
245 CDEBUG(D_INODE, "removed orphan %s from MDS/OST failed,"
246 " rc = %d\n", d_name, rc);
251 up(&pending_dir->i_sem);
254 list_for_each_entry_safe(dirent, n, &dentry_list, lld_list) {
255 list_del(&dirent->lld_list);
256 OBD_FREE(dirent, sizeof(*dirent));
259 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
265 l_dput(mds->mds_pending_dir);