![Mark Fasheh](/assets/img/avatar_default.png)
The OCFS2 file system module. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
1653 lines
40 KiB
C
1653 lines
40 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* journal.c
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*
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* Defines functions of journalling api
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*
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* Copyright (C) 2003, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#include <linux/kthread.h>
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#define MLOG_MASK_PREFIX ML_JOURNAL
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#include <cluster/masklog.h>
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#include "ocfs2.h"
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#include "alloc.h"
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#include "dlmglue.h"
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#include "extent_map.h"
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#include "heartbeat.h"
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#include "inode.h"
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#include "journal.h"
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#include "localalloc.h"
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#include "namei.h"
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#include "slot_map.h"
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#include "super.h"
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#include "vote.h"
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#include "sysfile.h"
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#include "buffer_head_io.h"
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spinlock_t trans_inc_lock = SPIN_LOCK_UNLOCKED;
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static int ocfs2_force_read_journal(struct inode *inode);
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static int ocfs2_recover_node(struct ocfs2_super *osb,
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int node_num);
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static int __ocfs2_recovery_thread(void *arg);
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static int ocfs2_commit_cache(struct ocfs2_super *osb);
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static int ocfs2_wait_on_mount(struct ocfs2_super *osb);
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static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
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struct ocfs2_journal_handle *handle);
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static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle);
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static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
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int dirty);
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static int ocfs2_trylock_journal(struct ocfs2_super *osb,
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int slot_num);
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static int ocfs2_recover_orphans(struct ocfs2_super *osb,
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int slot);
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static int ocfs2_commit_thread(void *arg);
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static int ocfs2_commit_cache(struct ocfs2_super *osb)
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{
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int status = 0;
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unsigned int flushed;
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unsigned long old_id;
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struct ocfs2_journal *journal = NULL;
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mlog_entry_void();
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journal = osb->journal;
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/* Flush all pending commits and checkpoint the journal. */
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down_write(&journal->j_trans_barrier);
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if (atomic_read(&journal->j_num_trans) == 0) {
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up_write(&journal->j_trans_barrier);
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mlog(0, "No transactions for me to flush!\n");
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goto finally;
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}
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journal_lock_updates(journal->j_journal);
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status = journal_flush(journal->j_journal);
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journal_unlock_updates(journal->j_journal);
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if (status < 0) {
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up_write(&journal->j_trans_barrier);
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mlog_errno(status);
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goto finally;
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}
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old_id = ocfs2_inc_trans_id(journal);
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flushed = atomic_read(&journal->j_num_trans);
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atomic_set(&journal->j_num_trans, 0);
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up_write(&journal->j_trans_barrier);
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mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n",
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journal->j_trans_id, flushed);
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ocfs2_kick_vote_thread(osb);
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wake_up(&journal->j_checkpointed);
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finally:
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mlog_exit(status);
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return status;
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}
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struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb)
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{
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struct ocfs2_journal_handle *retval = NULL;
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retval = kcalloc(1, sizeof(*retval), GFP_KERNEL);
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if (!retval) {
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mlog(ML_ERROR, "Failed to allocate memory for journal "
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"handle!\n");
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return NULL;
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}
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retval->max_buffs = 0;
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retval->num_locks = 0;
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retval->k_handle = NULL;
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INIT_LIST_HEAD(&retval->locks);
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INIT_LIST_HEAD(&retval->inode_list);
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retval->journal = osb->journal;
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return retval;
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}
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/* pass it NULL and it will allocate a new handle object for you. If
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* you pass it a handle however, it may still return error, in which
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* case it has free'd the passed handle for you. */
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struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
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struct ocfs2_journal_handle *handle,
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int max_buffs)
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{
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int ret;
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journal_t *journal = osb->journal->j_journal;
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mlog_entry("(max_buffs = %d)\n", max_buffs);
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if (!osb || !osb->journal->j_journal)
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BUG();
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if (ocfs2_is_hard_readonly(osb)) {
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ret = -EROFS;
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goto done_free;
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}
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BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
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BUG_ON(max_buffs <= 0);
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/* JBD might support this, but our journalling code doesn't yet. */
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if (journal_current_handle()) {
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mlog(ML_ERROR, "Recursive transaction attempted!\n");
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BUG();
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}
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if (!handle)
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handle = ocfs2_alloc_handle(osb);
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if (!handle) {
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ret = -ENOMEM;
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mlog(ML_ERROR, "Failed to allocate memory for journal "
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"handle!\n");
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goto done_free;
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}
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handle->max_buffs = max_buffs;
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down_read(&osb->journal->j_trans_barrier);
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/* actually start the transaction now */
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handle->k_handle = journal_start(journal, max_buffs);
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if (IS_ERR(handle->k_handle)) {
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up_read(&osb->journal->j_trans_barrier);
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ret = PTR_ERR(handle->k_handle);
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handle->k_handle = NULL;
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mlog_errno(ret);
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if (is_journal_aborted(journal)) {
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ocfs2_abort(osb->sb, "Detected aborted journal");
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ret = -EROFS;
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}
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goto done_free;
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}
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atomic_inc(&(osb->journal->j_num_trans));
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handle->flags |= OCFS2_HANDLE_STARTED;
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mlog_exit_ptr(handle);
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return handle;
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done_free:
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if (handle)
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ocfs2_commit_unstarted_handle(handle); /* will kfree handle */
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mlog_exit(ret);
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return ERR_PTR(ret);
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}
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void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle,
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struct inode *inode)
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{
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BUG_ON(!handle);
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BUG_ON(!inode);
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atomic_inc(&inode->i_count);
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/* we're obviously changing it... */
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down(&inode->i_sem);
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/* sanity check */
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BUG_ON(OCFS2_I(inode)->ip_handle);
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BUG_ON(!list_empty(&OCFS2_I(inode)->ip_handle_list));
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OCFS2_I(inode)->ip_handle = handle;
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list_del(&(OCFS2_I(inode)->ip_handle_list));
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list_add_tail(&(OCFS2_I(inode)->ip_handle_list), &(handle->inode_list));
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}
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static void ocfs2_handle_unlock_inodes(struct ocfs2_journal_handle *handle)
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{
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struct list_head *p, *n;
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struct inode *inode;
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struct ocfs2_inode_info *oi;
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list_for_each_safe(p, n, &handle->inode_list) {
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oi = list_entry(p, struct ocfs2_inode_info,
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ip_handle_list);
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inode = &oi->vfs_inode;
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OCFS2_I(inode)->ip_handle = NULL;
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list_del_init(&OCFS2_I(inode)->ip_handle_list);
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up(&inode->i_sem);
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iput(inode);
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}
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}
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/* This is trivial so we do it out of the main commit
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* paths. Beware, it can be called from start_trans too! */
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static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle)
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{
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mlog_entry_void();
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BUG_ON(handle->flags & OCFS2_HANDLE_STARTED);
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ocfs2_handle_unlock_inodes(handle);
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/* You are allowed to add journal locks before the transaction
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* has started. */
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ocfs2_handle_cleanup_locks(handle->journal, handle);
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kfree(handle);
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mlog_exit_void();
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}
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void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)
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{
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handle_t *jbd_handle;
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int retval;
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struct ocfs2_journal *journal = handle->journal;
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mlog_entry_void();
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BUG_ON(!handle);
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if (!(handle->flags & OCFS2_HANDLE_STARTED)) {
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ocfs2_commit_unstarted_handle(handle);
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mlog_exit_void();
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return;
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}
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/* release inode semaphores we took during this transaction */
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ocfs2_handle_unlock_inodes(handle);
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/* ocfs2_extend_trans may have had to call journal_restart
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* which will always commit the transaction, but may return
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* error for any number of reasons. If this is the case, we
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* clear k_handle as it's not valid any more. */
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if (handle->k_handle) {
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jbd_handle = handle->k_handle;
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if (handle->flags & OCFS2_HANDLE_SYNC)
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jbd_handle->h_sync = 1;
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else
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jbd_handle->h_sync = 0;
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/* actually stop the transaction. if we've set h_sync,
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* it'll have been committed when we return */
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retval = journal_stop(jbd_handle);
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if (retval < 0) {
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mlog_errno(retval);
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mlog(ML_ERROR, "Could not commit transaction\n");
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BUG();
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}
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handle->k_handle = NULL; /* it's been free'd in journal_stop */
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}
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ocfs2_handle_cleanup_locks(journal, handle);
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up_read(&journal->j_trans_barrier);
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kfree(handle);
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mlog_exit_void();
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}
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/*
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* 'nblocks' is what you want to add to the current
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* transaction. extend_trans will either extend the current handle by
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* nblocks, or commit it and start a new one with nblocks credits.
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*
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* WARNING: This will not release any semaphores or disk locks taken
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* during the transaction, so make sure they were taken *before*
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* start_trans or we'll have ordering deadlocks.
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*
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* WARNING2: Note that we do *not* drop j_trans_barrier here. This is
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* good because transaction ids haven't yet been recorded on the
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* cluster locks associated with this handle.
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*/
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int ocfs2_extend_trans(struct ocfs2_journal_handle *handle,
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int nblocks)
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{
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int status;
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BUG_ON(!handle);
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BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
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BUG_ON(!nblocks);
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mlog_entry_void();
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mlog(0, "Trying to extend transaction by %d blocks\n", nblocks);
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status = journal_extend(handle->k_handle, nblocks);
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if (status < 0) {
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mlog_errno(status);
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goto bail;
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}
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if (status > 0) {
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mlog(0, "journal_extend failed, trying journal_restart\n");
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status = journal_restart(handle->k_handle, nblocks);
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if (status < 0) {
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handle->k_handle = NULL;
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mlog_errno(status);
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goto bail;
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}
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handle->max_buffs = nblocks;
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} else
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handle->max_buffs += nblocks;
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status = 0;
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bail:
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mlog_exit(status);
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return status;
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}
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int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
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struct inode *inode,
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struct buffer_head *bh,
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int type)
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{
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int status;
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BUG_ON(!inode);
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BUG_ON(!handle);
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BUG_ON(!bh);
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BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
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mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %hu\n",
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(unsigned long long)bh->b_blocknr, type,
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(type == OCFS2_JOURNAL_ACCESS_CREATE) ?
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"OCFS2_JOURNAL_ACCESS_CREATE" :
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"OCFS2_JOURNAL_ACCESS_WRITE",
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bh->b_size);
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/* we can safely remove this assertion after testing. */
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if (!buffer_uptodate(bh)) {
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mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n");
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mlog(ML_ERROR, "b_blocknr=%llu\n",
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(unsigned long long)bh->b_blocknr);
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BUG();
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}
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/* Set the current transaction information on the inode so
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* that the locking code knows whether it can drop it's locks
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* on this inode or not. We're protected from the commit
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* thread updating the current transaction id until
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* ocfs2_commit_trans() because ocfs2_start_trans() took
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* j_trans_barrier for us. */
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ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode);
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down(&OCFS2_I(inode)->ip_io_sem);
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switch (type) {
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case OCFS2_JOURNAL_ACCESS_CREATE:
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case OCFS2_JOURNAL_ACCESS_WRITE:
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status = journal_get_write_access(handle->k_handle, bh);
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break;
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case OCFS2_JOURNAL_ACCESS_UNDO:
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status = journal_get_undo_access(handle->k_handle, bh);
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break;
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default:
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status = -EINVAL;
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mlog(ML_ERROR, "Uknown access type!\n");
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}
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up(&OCFS2_I(inode)->ip_io_sem);
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|
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if (status < 0)
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mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",
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status, type);
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mlog_exit(status);
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return status;
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}
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|
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int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle,
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struct buffer_head *bh)
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{
|
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int status;
|
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|
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BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED));
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|
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mlog_entry("(bh->b_blocknr=%llu)\n",
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(unsigned long long)bh->b_blocknr);
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|
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status = journal_dirty_metadata(handle->k_handle, bh);
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if (status < 0)
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mlog(ML_ERROR, "Could not dirty metadata buffer. "
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"(bh->b_blocknr=%llu)\n",
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(unsigned long long)bh->b_blocknr);
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|
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mlog_exit(status);
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return status;
|
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}
|
|
|
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int ocfs2_journal_dirty_data(handle_t *handle,
|
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struct buffer_head *bh)
|
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{
|
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int err = journal_dirty_data(handle, bh);
|
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if (err)
|
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mlog_errno(err);
|
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/* TODO: When we can handle it, abort the handle and go RO on
|
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* error here. */
|
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|
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return err;
|
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}
|
|
|
|
/* We always assume you're adding a metadata lock at level 'ex' */
|
|
int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,
|
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struct inode *inode)
|
|
{
|
|
int status;
|
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struct ocfs2_journal_lock *lock;
|
|
|
|
BUG_ON(!inode);
|
|
|
|
lock = kmem_cache_alloc(ocfs2_lock_cache, GFP_NOFS);
|
|
if (!lock) {
|
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status = -ENOMEM;
|
|
mlog_errno(-ENOMEM);
|
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goto bail;
|
|
}
|
|
|
|
if (!igrab(inode))
|
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BUG();
|
|
lock->jl_inode = inode;
|
|
|
|
list_add_tail(&(lock->jl_lock_list), &(handle->locks));
|
|
handle->num_locks++;
|
|
|
|
status = 0;
|
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bail:
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,
|
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struct ocfs2_journal_handle *handle)
|
|
{
|
|
struct list_head *p, *n;
|
|
struct ocfs2_journal_lock *lock;
|
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struct inode *inode;
|
|
|
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list_for_each_safe(p, n, &(handle->locks)) {
|
|
lock = list_entry(p, struct ocfs2_journal_lock,
|
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jl_lock_list);
|
|
list_del(&lock->jl_lock_list);
|
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handle->num_locks--;
|
|
|
|
inode = lock->jl_inode;
|
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ocfs2_meta_unlock(inode, 1);
|
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if (atomic_read(&inode->i_count) == 1)
|
|
mlog(ML_ERROR,
|
|
"Inode %"MLFu64", I'm doing a last iput for!",
|
|
OCFS2_I(inode)->ip_blkno);
|
|
iput(inode);
|
|
kmem_cache_free(ocfs2_lock_cache, lock);
|
|
}
|
|
}
|
|
|
|
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5)
|
|
|
|
void ocfs2_set_journal_params(struct ocfs2_super *osb)
|
|
{
|
|
journal_t *journal = osb->journal->j_journal;
|
|
|
|
spin_lock(&journal->j_state_lock);
|
|
journal->j_commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
|
|
if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
|
|
journal->j_flags |= JFS_BARRIER;
|
|
else
|
|
journal->j_flags &= ~JFS_BARRIER;
|
|
spin_unlock(&journal->j_state_lock);
|
|
}
|
|
|
|
int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
|
|
{
|
|
int status = -1;
|
|
struct inode *inode = NULL; /* the journal inode */
|
|
journal_t *j_journal = NULL;
|
|
struct ocfs2_dinode *di = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_super *osb;
|
|
int meta_lock = 0;
|
|
|
|
mlog_entry_void();
|
|
|
|
BUG_ON(!journal);
|
|
|
|
osb = journal->j_osb;
|
|
|
|
/* already have the inode for our journal */
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
osb->slot_num);
|
|
if (inode == NULL) {
|
|
status = -EACCES;
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
if (is_bad_inode(inode)) {
|
|
mlog(ML_ERROR, "access error (bad inode)\n");
|
|
iput(inode);
|
|
inode = NULL;
|
|
status = -EACCES;
|
|
goto done;
|
|
}
|
|
|
|
SET_INODE_JOURNAL(inode);
|
|
OCFS2_I(inode)->ip_open_count++;
|
|
|
|
status = ocfs2_meta_lock(inode, NULL, &bh, 1);
|
|
if (status < 0) {
|
|
if (status != -ERESTARTSYS)
|
|
mlog(ML_ERROR, "Could not get lock on journal!\n");
|
|
goto done;
|
|
}
|
|
|
|
meta_lock = 1;
|
|
di = (struct ocfs2_dinode *)bh->b_data;
|
|
|
|
if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) {
|
|
mlog(ML_ERROR, "Journal file size (%lld) is too small!\n",
|
|
inode->i_size);
|
|
status = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
mlog(0, "inode->i_size = %lld\n", inode->i_size);
|
|
mlog(0, "inode->i_blocks = %lu\n", inode->i_blocks);
|
|
mlog(0, "inode->ip_clusters = %u\n", OCFS2_I(inode)->ip_clusters);
|
|
|
|
/* call the kernels journal init function now */
|
|
j_journal = journal_init_inode(inode);
|
|
if (j_journal == NULL) {
|
|
mlog(ML_ERROR, "Linux journal layer error\n");
|
|
status = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
mlog(0, "Returned from journal_init_inode\n");
|
|
mlog(0, "j_journal->j_maxlen = %u\n", j_journal->j_maxlen);
|
|
|
|
*dirty = (le32_to_cpu(di->id1.journal1.ij_flags) &
|
|
OCFS2_JOURNAL_DIRTY_FL);
|
|
|
|
journal->j_journal = j_journal;
|
|
journal->j_inode = inode;
|
|
journal->j_bh = bh;
|
|
|
|
ocfs2_set_journal_params(osb);
|
|
|
|
journal->j_state = OCFS2_JOURNAL_LOADED;
|
|
|
|
status = 0;
|
|
done:
|
|
if (status < 0) {
|
|
if (meta_lock)
|
|
ocfs2_meta_unlock(inode, 1);
|
|
if (bh != NULL)
|
|
brelse(bh);
|
|
if (inode) {
|
|
OCFS2_I(inode)->ip_open_count--;
|
|
iput(inode);
|
|
}
|
|
}
|
|
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
|
|
int dirty)
|
|
{
|
|
int status;
|
|
unsigned int flags;
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
struct buffer_head *bh = journal->j_bh;
|
|
struct ocfs2_dinode *fe;
|
|
|
|
mlog_entry_void();
|
|
|
|
fe = (struct ocfs2_dinode *)bh->b_data;
|
|
if (!OCFS2_IS_VALID_DINODE(fe)) {
|
|
/* This is called from startup/shutdown which will
|
|
* handle the errors in a specific manner, so no need
|
|
* to call ocfs2_error() here. */
|
|
mlog(ML_ERROR, "Journal dinode %"MLFu64" has invalid "
|
|
"signature: %.*s", fe->i_blkno, 7, fe->i_signature);
|
|
status = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
if (dirty)
|
|
flags |= OCFS2_JOURNAL_DIRTY_FL;
|
|
else
|
|
flags &= ~OCFS2_JOURNAL_DIRTY_FL;
|
|
fe->id1.journal1.ij_flags = cpu_to_le32(flags);
|
|
|
|
status = ocfs2_write_block(osb, bh, journal->j_inode);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
out:
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* If the journal has been kmalloc'd it needs to be freed after this
|
|
* call.
|
|
*/
|
|
void ocfs2_journal_shutdown(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_journal *journal = NULL;
|
|
int status = 0;
|
|
struct inode *inode = NULL;
|
|
int num_running_trans = 0;
|
|
|
|
mlog_entry_void();
|
|
|
|
if (!osb)
|
|
BUG();
|
|
|
|
journal = osb->journal;
|
|
if (!journal)
|
|
goto done;
|
|
|
|
inode = journal->j_inode;
|
|
|
|
if (journal->j_state != OCFS2_JOURNAL_LOADED)
|
|
goto done;
|
|
|
|
/* need to inc inode use count as journal_destroy will iput. */
|
|
if (!igrab(inode))
|
|
BUG();
|
|
|
|
num_running_trans = atomic_read(&(osb->journal->j_num_trans));
|
|
if (num_running_trans > 0)
|
|
mlog(0, "Shutting down journal: must wait on %d "
|
|
"running transactions!\n",
|
|
num_running_trans);
|
|
|
|
/* Do a commit_cache here. It will flush our journal, *and*
|
|
* release any locks that are still held.
|
|
* set the SHUTDOWN flag and release the trans lock.
|
|
* the commit thread will take the trans lock for us below. */
|
|
journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN;
|
|
|
|
/* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not
|
|
* drop the trans_lock (which we want to hold until we
|
|
* completely destroy the journal. */
|
|
if (osb->commit_task) {
|
|
/* Wait for the commit thread */
|
|
mlog(0, "Waiting for ocfs2commit to exit....\n");
|
|
kthread_stop(osb->commit_task);
|
|
osb->commit_task = NULL;
|
|
}
|
|
|
|
BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0);
|
|
|
|
status = ocfs2_journal_toggle_dirty(osb, 0);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* Shutdown the kernel journal system */
|
|
journal_destroy(journal->j_journal);
|
|
|
|
OCFS2_I(inode)->ip_open_count--;
|
|
|
|
/* unlock our journal */
|
|
ocfs2_meta_unlock(inode, 1);
|
|
|
|
brelse(journal->j_bh);
|
|
journal->j_bh = NULL;
|
|
|
|
journal->j_state = OCFS2_JOURNAL_FREE;
|
|
|
|
// up_write(&journal->j_trans_barrier);
|
|
done:
|
|
if (inode)
|
|
iput(inode);
|
|
mlog_exit_void();
|
|
}
|
|
|
|
static void ocfs2_clear_journal_error(struct super_block *sb,
|
|
journal_t *journal,
|
|
int slot)
|
|
{
|
|
int olderr;
|
|
|
|
olderr = journal_errno(journal);
|
|
if (olderr) {
|
|
mlog(ML_ERROR, "File system error %d recorded in "
|
|
"journal %u.\n", olderr, slot);
|
|
mlog(ML_ERROR, "File system on device %s needs checking.\n",
|
|
sb->s_id);
|
|
|
|
journal_ack_err(journal);
|
|
journal_clear_err(journal);
|
|
}
|
|
}
|
|
|
|
int ocfs2_journal_load(struct ocfs2_journal *journal)
|
|
{
|
|
int status = 0;
|
|
struct ocfs2_super *osb;
|
|
|
|
mlog_entry_void();
|
|
|
|
if (!journal)
|
|
BUG();
|
|
|
|
osb = journal->j_osb;
|
|
|
|
status = journal_load(journal->j_journal);
|
|
if (status < 0) {
|
|
mlog(ML_ERROR, "Failed to load journal!\n");
|
|
goto done;
|
|
}
|
|
|
|
ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num);
|
|
|
|
status = ocfs2_journal_toggle_dirty(osb, 1);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* Launch the commit thread */
|
|
osb->commit_task = kthread_run(ocfs2_commit_thread, osb, "ocfs2cmt-%d",
|
|
osb->osb_id);
|
|
if (IS_ERR(osb->commit_task)) {
|
|
status = PTR_ERR(osb->commit_task);
|
|
osb->commit_task = NULL;
|
|
mlog(ML_ERROR, "unable to launch ocfs2commit thread, error=%d",
|
|
status);
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
|
|
/* 'full' flag tells us whether we clear out all blocks or if we just
|
|
* mark the journal clean */
|
|
int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
|
|
{
|
|
int status;
|
|
|
|
mlog_entry_void();
|
|
|
|
if (!journal)
|
|
BUG();
|
|
|
|
status = journal_wipe(journal->j_journal, full);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
status = ocfs2_journal_toggle_dirty(journal->j_osb, 0);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
bail:
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* JBD Might read a cached version of another nodes journal file. We
|
|
* don't want this as this file changes often and we get no
|
|
* notification on those changes. The only way to be sure that we've
|
|
* got the most up to date version of those blocks then is to force
|
|
* read them off disk. Just searching through the buffer cache won't
|
|
* work as there may be pages backing this file which are still marked
|
|
* up to date. We know things can't change on this file underneath us
|
|
* as we have the lock by now :)
|
|
*/
|
|
static int ocfs2_force_read_journal(struct inode *inode)
|
|
{
|
|
int status = 0;
|
|
int i, p_blocks;
|
|
u64 v_blkno, p_blkno;
|
|
#define CONCURRENT_JOURNAL_FILL 32
|
|
struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL];
|
|
|
|
mlog_entry_void();
|
|
|
|
BUG_ON(inode->i_blocks !=
|
|
ocfs2_align_bytes_to_sectors(i_size_read(inode)));
|
|
|
|
memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL);
|
|
|
|
mlog(0, "Force reading %lu blocks\n",
|
|
(inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9)));
|
|
|
|
v_blkno = 0;
|
|
while (v_blkno <
|
|
(inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9))) {
|
|
|
|
status = ocfs2_extent_map_get_blocks(inode, v_blkno,
|
|
1, &p_blkno,
|
|
&p_blocks);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
if (p_blocks > CONCURRENT_JOURNAL_FILL)
|
|
p_blocks = CONCURRENT_JOURNAL_FILL;
|
|
|
|
status = ocfs2_read_blocks(OCFS2_SB(inode->i_sb),
|
|
p_blkno, p_blocks, bhs, 0,
|
|
inode);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
for(i = 0; i < p_blocks; i++) {
|
|
brelse(bhs[i]);
|
|
bhs[i] = NULL;
|
|
}
|
|
|
|
v_blkno += p_blocks;
|
|
}
|
|
|
|
bail:
|
|
for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++)
|
|
if (bhs[i])
|
|
brelse(bhs[i]);
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
struct ocfs2_la_recovery_item {
|
|
struct list_head lri_list;
|
|
int lri_slot;
|
|
struct ocfs2_dinode *lri_la_dinode;
|
|
struct ocfs2_dinode *lri_tl_dinode;
|
|
};
|
|
|
|
/* Does the second half of the recovery process. By this point, the
|
|
* node is marked clean and can actually be considered recovered,
|
|
* hence it's no longer in the recovery map, but there's still some
|
|
* cleanup we can do which shouldn't happen within the recovery thread
|
|
* as locking in that context becomes very difficult if we are to take
|
|
* recovering nodes into account.
|
|
*
|
|
* NOTE: This function can and will sleep on recovery of other nodes
|
|
* during cluster locking, just like any other ocfs2 process.
|
|
*/
|
|
void ocfs2_complete_recovery(void *data)
|
|
{
|
|
int ret;
|
|
struct ocfs2_super *osb = data;
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
struct ocfs2_dinode *la_dinode, *tl_dinode;
|
|
struct ocfs2_la_recovery_item *item;
|
|
struct list_head *p, *n;
|
|
LIST_HEAD(tmp_la_list);
|
|
|
|
mlog_entry_void();
|
|
|
|
mlog(0, "completing recovery from keventd\n");
|
|
|
|
spin_lock(&journal->j_lock);
|
|
list_splice_init(&journal->j_la_cleanups, &tmp_la_list);
|
|
spin_unlock(&journal->j_lock);
|
|
|
|
list_for_each_safe(p, n, &tmp_la_list) {
|
|
item = list_entry(p, struct ocfs2_la_recovery_item, lri_list);
|
|
list_del_init(&item->lri_list);
|
|
|
|
mlog(0, "Complete recovery for slot %d\n", item->lri_slot);
|
|
|
|
la_dinode = item->lri_la_dinode;
|
|
if (la_dinode) {
|
|
mlog(0, "Clean up local alloc %"MLFu64"\n",
|
|
la_dinode->i_blkno);
|
|
|
|
ret = ocfs2_complete_local_alloc_recovery(osb,
|
|
la_dinode);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
kfree(la_dinode);
|
|
}
|
|
|
|
tl_dinode = item->lri_tl_dinode;
|
|
if (tl_dinode) {
|
|
mlog(0, "Clean up truncate log %"MLFu64"\n",
|
|
tl_dinode->i_blkno);
|
|
|
|
ret = ocfs2_complete_truncate_log_recovery(osb,
|
|
tl_dinode);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
kfree(tl_dinode);
|
|
}
|
|
|
|
ret = ocfs2_recover_orphans(osb, item->lri_slot);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
kfree(item);
|
|
}
|
|
|
|
mlog(0, "Recovery completion\n");
|
|
mlog_exit_void();
|
|
}
|
|
|
|
/* NOTE: This function always eats your references to la_dinode and
|
|
* tl_dinode, either manually on error, or by passing them to
|
|
* ocfs2_complete_recovery */
|
|
static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
|
|
int slot_num,
|
|
struct ocfs2_dinode *la_dinode,
|
|
struct ocfs2_dinode *tl_dinode)
|
|
{
|
|
struct ocfs2_la_recovery_item *item;
|
|
|
|
item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_KERNEL);
|
|
if (!item) {
|
|
/* Though we wish to avoid it, we are in fact safe in
|
|
* skipping local alloc cleanup as fsck.ocfs2 is more
|
|
* than capable of reclaiming unused space. */
|
|
if (la_dinode)
|
|
kfree(la_dinode);
|
|
|
|
if (tl_dinode)
|
|
kfree(tl_dinode);
|
|
|
|
mlog_errno(-ENOMEM);
|
|
return;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&item->lri_list);
|
|
item->lri_la_dinode = la_dinode;
|
|
item->lri_slot = slot_num;
|
|
item->lri_tl_dinode = tl_dinode;
|
|
|
|
spin_lock(&journal->j_lock);
|
|
list_add_tail(&item->lri_list, &journal->j_la_cleanups);
|
|
queue_work(ocfs2_wq, &journal->j_recovery_work);
|
|
spin_unlock(&journal->j_lock);
|
|
}
|
|
|
|
/* Called by the mount code to queue recovery the last part of
|
|
* recovery for it's own slot. */
|
|
void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
|
|
if (osb->dirty) {
|
|
/* No need to queue up our truncate_log as regular
|
|
* cleanup will catch that. */
|
|
ocfs2_queue_recovery_completion(journal,
|
|
osb->slot_num,
|
|
osb->local_alloc_copy,
|
|
NULL);
|
|
ocfs2_schedule_truncate_log_flush(osb, 0);
|
|
|
|
osb->local_alloc_copy = NULL;
|
|
osb->dirty = 0;
|
|
}
|
|
}
|
|
|
|
static int __ocfs2_recovery_thread(void *arg)
|
|
{
|
|
int status, node_num;
|
|
struct ocfs2_super *osb = arg;
|
|
|
|
mlog_entry_void();
|
|
|
|
status = ocfs2_wait_on_mount(osb);
|
|
if (status < 0) {
|
|
goto bail;
|
|
}
|
|
|
|
restart:
|
|
status = ocfs2_super_lock(osb, 1);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
while(!ocfs2_node_map_is_empty(osb, &osb->recovery_map)) {
|
|
node_num = ocfs2_node_map_first_set_bit(osb,
|
|
&osb->recovery_map);
|
|
if (node_num == O2NM_INVALID_NODE_NUM) {
|
|
mlog(0, "Out of nodes to recover.\n");
|
|
break;
|
|
}
|
|
|
|
status = ocfs2_recover_node(osb, node_num);
|
|
if (status < 0) {
|
|
mlog(ML_ERROR,
|
|
"Error %d recovering node %d on device (%u,%u)!\n",
|
|
status, node_num,
|
|
MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
|
|
mlog(ML_ERROR, "Volume requires unmount.\n");
|
|
continue;
|
|
}
|
|
|
|
ocfs2_recovery_map_clear(osb, node_num);
|
|
}
|
|
ocfs2_super_unlock(osb, 1);
|
|
|
|
/* We always run recovery on our own orphan dir - the dead
|
|
* node(s) may have voted "no" on an inode delete earlier. A
|
|
* revote is therefore required. */
|
|
ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
|
|
NULL);
|
|
|
|
bail:
|
|
down(&osb->recovery_lock);
|
|
if (!status &&
|
|
!ocfs2_node_map_is_empty(osb, &osb->recovery_map)) {
|
|
up(&osb->recovery_lock);
|
|
goto restart;
|
|
}
|
|
|
|
osb->recovery_thread_task = NULL;
|
|
mb(); /* sync with ocfs2_recovery_thread_running */
|
|
wake_up(&osb->recovery_event);
|
|
|
|
up(&osb->recovery_lock);
|
|
|
|
mlog_exit(status);
|
|
/* no one is callint kthread_stop() for us so the kthread() api
|
|
* requires that we call do_exit(). And it isn't exported, but
|
|
* complete_and_exit() seems to be a minimal wrapper around it. */
|
|
complete_and_exit(NULL, status);
|
|
return status;
|
|
}
|
|
|
|
void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
|
|
{
|
|
mlog_entry("(node_num=%d, osb->node_num = %d)\n",
|
|
node_num, osb->node_num);
|
|
|
|
down(&osb->recovery_lock);
|
|
if (osb->disable_recovery)
|
|
goto out;
|
|
|
|
/* People waiting on recovery will wait on
|
|
* the recovery map to empty. */
|
|
if (!ocfs2_recovery_map_set(osb, node_num))
|
|
mlog(0, "node %d already be in recovery.\n", node_num);
|
|
|
|
mlog(0, "starting recovery thread...\n");
|
|
|
|
if (osb->recovery_thread_task)
|
|
goto out;
|
|
|
|
osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb,
|
|
"ocfs2rec-%d", osb->osb_id);
|
|
if (IS_ERR(osb->recovery_thread_task)) {
|
|
mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
|
|
osb->recovery_thread_task = NULL;
|
|
}
|
|
|
|
out:
|
|
up(&osb->recovery_lock);
|
|
wake_up(&osb->recovery_event);
|
|
|
|
mlog_exit_void();
|
|
}
|
|
|
|
/* Does the actual journal replay and marks the journal inode as
|
|
* clean. Will only replay if the journal inode is marked dirty. */
|
|
static int ocfs2_replay_journal(struct ocfs2_super *osb,
|
|
int node_num,
|
|
int slot_num)
|
|
{
|
|
int status;
|
|
int got_lock = 0;
|
|
unsigned int flags;
|
|
struct inode *inode = NULL;
|
|
struct ocfs2_dinode *fe;
|
|
journal_t *journal = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
slot_num);
|
|
if (inode == NULL) {
|
|
status = -EACCES;
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
if (is_bad_inode(inode)) {
|
|
status = -EACCES;
|
|
iput(inode);
|
|
inode = NULL;
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
SET_INODE_JOURNAL(inode);
|
|
|
|
status = ocfs2_meta_lock_full(inode, NULL, &bh, 1,
|
|
OCFS2_META_LOCK_RECOVERY);
|
|
if (status < 0) {
|
|
mlog(0, "status returned from ocfs2_meta_lock=%d\n", status);
|
|
if (status != -ERESTARTSYS)
|
|
mlog(ML_ERROR, "Could not lock journal!\n");
|
|
goto done;
|
|
}
|
|
got_lock = 1;
|
|
|
|
fe = (struct ocfs2_dinode *) bh->b_data;
|
|
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
|
|
if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) {
|
|
mlog(0, "No recovery required for node %d\n", node_num);
|
|
goto done;
|
|
}
|
|
|
|
mlog(ML_NOTICE, "Recovering node %d from slot %d on device (%u,%u)\n",
|
|
node_num, slot_num,
|
|
MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
|
|
|
|
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
|
|
|
|
status = ocfs2_force_read_journal(inode);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
mlog(0, "calling journal_init_inode\n");
|
|
journal = journal_init_inode(inode);
|
|
if (journal == NULL) {
|
|
mlog(ML_ERROR, "Linux journal layer error\n");
|
|
status = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
status = journal_load(journal);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
if (!igrab(inode))
|
|
BUG();
|
|
journal_destroy(journal);
|
|
goto done;
|
|
}
|
|
|
|
ocfs2_clear_journal_error(osb->sb, journal, slot_num);
|
|
|
|
/* wipe the journal */
|
|
mlog(0, "flushing the journal.\n");
|
|
journal_lock_updates(journal);
|
|
status = journal_flush(journal);
|
|
journal_unlock_updates(journal);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* This will mark the node clean */
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
flags &= ~OCFS2_JOURNAL_DIRTY_FL;
|
|
fe->id1.journal1.ij_flags = cpu_to_le32(flags);
|
|
|
|
status = ocfs2_write_block(osb, bh, inode);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
if (!igrab(inode))
|
|
BUG();
|
|
|
|
journal_destroy(journal);
|
|
|
|
done:
|
|
/* drop the lock on this nodes journal */
|
|
if (got_lock)
|
|
ocfs2_meta_unlock(inode, 1);
|
|
|
|
if (inode)
|
|
iput(inode);
|
|
|
|
if (bh)
|
|
brelse(bh);
|
|
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Do the most important parts of node recovery:
|
|
* - Replay it's journal
|
|
* - Stamp a clean local allocator file
|
|
* - Stamp a clean truncate log
|
|
* - Mark the node clean
|
|
*
|
|
* If this function completes without error, a node in OCFS2 can be
|
|
* said to have been safely recovered. As a result, failure during the
|
|
* second part of a nodes recovery process (local alloc recovery) is
|
|
* far less concerning.
|
|
*/
|
|
static int ocfs2_recover_node(struct ocfs2_super *osb,
|
|
int node_num)
|
|
{
|
|
int status = 0;
|
|
int slot_num;
|
|
struct ocfs2_slot_info *si = osb->slot_info;
|
|
struct ocfs2_dinode *la_copy = NULL;
|
|
struct ocfs2_dinode *tl_copy = NULL;
|
|
|
|
mlog_entry("(node_num=%d, osb->node_num = %d)\n",
|
|
node_num, osb->node_num);
|
|
|
|
mlog(0, "checking node %d\n", node_num);
|
|
|
|
/* Should not ever be called to recover ourselves -- in that
|
|
* case we should've called ocfs2_journal_load instead. */
|
|
if (osb->node_num == node_num)
|
|
BUG();
|
|
|
|
slot_num = ocfs2_node_num_to_slot(si, node_num);
|
|
if (slot_num == OCFS2_INVALID_SLOT) {
|
|
status = 0;
|
|
mlog(0, "no slot for this node, so no recovery required.\n");
|
|
goto done;
|
|
}
|
|
|
|
mlog(0, "node %d was using slot %d\n", node_num, slot_num);
|
|
|
|
status = ocfs2_replay_journal(osb, node_num, slot_num);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* Stamp a clean local alloc file AFTER recovering the journal... */
|
|
status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* An error from begin_truncate_log_recovery is not
|
|
* serious enough to warrant halting the rest of
|
|
* recovery. */
|
|
status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* Likewise, this would be a strange but ultimately not so
|
|
* harmful place to get an error... */
|
|
ocfs2_clear_slot(si, slot_num);
|
|
status = ocfs2_update_disk_slots(osb, si);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* This will kfree the memory pointed to by la_copy and tl_copy */
|
|
ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy,
|
|
tl_copy);
|
|
|
|
status = 0;
|
|
done:
|
|
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
/* Test node liveness by trylocking his journal. If we get the lock,
|
|
* we drop it here. Return 0 if we got the lock, -EAGAIN if node is
|
|
* still alive (we couldn't get the lock) and < 0 on error. */
|
|
static int ocfs2_trylock_journal(struct ocfs2_super *osb,
|
|
int slot_num)
|
|
{
|
|
int status, flags;
|
|
struct inode *inode = NULL;
|
|
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
slot_num);
|
|
if (inode == NULL) {
|
|
mlog(ML_ERROR, "access error\n");
|
|
status = -EACCES;
|
|
goto bail;
|
|
}
|
|
if (is_bad_inode(inode)) {
|
|
mlog(ML_ERROR, "access error (bad inode)\n");
|
|
iput(inode);
|
|
inode = NULL;
|
|
status = -EACCES;
|
|
goto bail;
|
|
}
|
|
SET_INODE_JOURNAL(inode);
|
|
|
|
flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
|
|
status = ocfs2_meta_lock_full(inode, NULL, NULL, 1, flags);
|
|
if (status < 0) {
|
|
if (status != -EAGAIN)
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
ocfs2_meta_unlock(inode, 1);
|
|
bail:
|
|
if (inode)
|
|
iput(inode);
|
|
|
|
return status;
|
|
}
|
|
|
|
/* Call this underneath ocfs2_super_lock. It also assumes that the
|
|
* slot info struct has been updated from disk. */
|
|
int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
|
|
{
|
|
int status, i, node_num;
|
|
struct ocfs2_slot_info *si = osb->slot_info;
|
|
|
|
/* This is called with the super block cluster lock, so we
|
|
* know that the slot map can't change underneath us. */
|
|
|
|
spin_lock(&si->si_lock);
|
|
for(i = 0; i < si->si_num_slots; i++) {
|
|
if (i == osb->slot_num)
|
|
continue;
|
|
if (ocfs2_is_empty_slot(si, i))
|
|
continue;
|
|
|
|
node_num = si->si_global_node_nums[i];
|
|
if (ocfs2_node_map_test_bit(osb, &osb->recovery_map, node_num))
|
|
continue;
|
|
spin_unlock(&si->si_lock);
|
|
|
|
/* Ok, we have a slot occupied by another node which
|
|
* is not in the recovery map. We trylock his journal
|
|
* file here to test if he's alive. */
|
|
status = ocfs2_trylock_journal(osb, i);
|
|
if (!status) {
|
|
/* Since we're called from mount, we know that
|
|
* the recovery thread can't race us on
|
|
* setting / checking the recovery bits. */
|
|
ocfs2_recovery_thread(osb, node_num);
|
|
} else if ((status < 0) && (status != -EAGAIN)) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
spin_lock(&si->si_lock);
|
|
}
|
|
spin_unlock(&si->si_lock);
|
|
|
|
status = 0;
|
|
bail:
|
|
mlog_exit(status);
|
|
return status;
|
|
}
|
|
|
|
static int ocfs2_recover_orphans(struct ocfs2_super *osb,
|
|
int slot)
|
|
{
|
|
int status = 0;
|
|
int have_disk_lock = 0;
|
|
struct inode *inode = NULL;
|
|
struct inode *iter;
|
|
struct inode *orphan_dir_inode = NULL;
|
|
unsigned long offset, blk, local;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_dir_entry *de;
|
|
struct super_block *sb = osb->sb;
|
|
struct ocfs2_inode_info *oi;
|
|
|
|
mlog(0, "Recover inodes from orphan dir in slot %d\n", slot);
|
|
|
|
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
|
|
ORPHAN_DIR_SYSTEM_INODE,
|
|
slot);
|
|
if (!orphan_dir_inode) {
|
|
status = -ENOENT;
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
down(&orphan_dir_inode->i_sem);
|
|
status = ocfs2_meta_lock(orphan_dir_inode, NULL, NULL, 0);
|
|
if (status < 0) {
|
|
up(&orphan_dir_inode->i_sem);
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
have_disk_lock = 1;
|
|
|
|
offset = 0;
|
|
iter = NULL;
|
|
while(offset < i_size_read(orphan_dir_inode)) {
|
|
blk = offset >> sb->s_blocksize_bits;
|
|
|
|
bh = ocfs2_bread(orphan_dir_inode, blk, &status, 0);
|
|
if (!bh)
|
|
status = -EINVAL;
|
|
if (status < 0) {
|
|
up(&orphan_dir_inode->i_sem);
|
|
if (bh)
|
|
brelse(bh);
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
local = 0;
|
|
while(offset < i_size_read(orphan_dir_inode)
|
|
&& local < sb->s_blocksize) {
|
|
de = (struct ocfs2_dir_entry *) (bh->b_data + local);
|
|
|
|
if (!ocfs2_check_dir_entry(orphan_dir_inode,
|
|
de, bh, local)) {
|
|
up(&orphan_dir_inode->i_sem);
|
|
status = -EINVAL;
|
|
mlog_errno(status);
|
|
brelse(bh);
|
|
goto out;
|
|
}
|
|
|
|
local += le16_to_cpu(de->rec_len);
|
|
offset += le16_to_cpu(de->rec_len);
|
|
|
|
/* I guess we silently fail on no inode? */
|
|
if (!le64_to_cpu(de->inode))
|
|
continue;
|
|
if (de->file_type > OCFS2_FT_MAX) {
|
|
mlog(ML_ERROR,
|
|
"block %llu contains invalid de: "
|
|
"inode = %"MLFu64", rec_len = %u, "
|
|
"name_len = %u, file_type = %u, "
|
|
"name='%.*s'\n",
|
|
(unsigned long long)bh->b_blocknr,
|
|
le64_to_cpu(de->inode),
|
|
le16_to_cpu(de->rec_len),
|
|
de->name_len,
|
|
de->file_type,
|
|
de->name_len,
|
|
de->name);
|
|
continue;
|
|
}
|
|
if (de->name_len == 1 && !strncmp(".", de->name, 1))
|
|
continue;
|
|
if (de->name_len == 2 && !strncmp("..", de->name, 2))
|
|
continue;
|
|
|
|
iter = ocfs2_iget(osb, le64_to_cpu(de->inode));
|
|
if (IS_ERR(iter))
|
|
continue;
|
|
|
|
mlog(0, "queue orphan %"MLFu64"\n",
|
|
OCFS2_I(iter)->ip_blkno);
|
|
OCFS2_I(iter)->ip_next_orphan = inode;
|
|
inode = iter;
|
|
}
|
|
brelse(bh);
|
|
}
|
|
up(&orphan_dir_inode->i_sem);
|
|
|
|
ocfs2_meta_unlock(orphan_dir_inode, 0);
|
|
have_disk_lock = 0;
|
|
|
|
iput(orphan_dir_inode);
|
|
orphan_dir_inode = NULL;
|
|
|
|
while (inode) {
|
|
oi = OCFS2_I(inode);
|
|
mlog(0, "iput orphan %"MLFu64"\n", oi->ip_blkno);
|
|
|
|
iter = oi->ip_next_orphan;
|
|
|
|
spin_lock(&oi->ip_lock);
|
|
/* Delete voting may have set these on the assumption
|
|
* that the other node would wipe them successfully.
|
|
* If they are still in the node's orphan dir, we need
|
|
* to reset that state. */
|
|
oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE);
|
|
|
|
/* Set the proper information to get us going into
|
|
* ocfs2_delete_inode. */
|
|
oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
|
|
oi->ip_orphaned_slot = slot;
|
|
spin_unlock(&oi->ip_lock);
|
|
|
|
iput(inode);
|
|
|
|
inode = iter;
|
|
}
|
|
|
|
out:
|
|
if (have_disk_lock)
|
|
ocfs2_meta_unlock(orphan_dir_inode, 0);
|
|
|
|
if (orphan_dir_inode)
|
|
iput(orphan_dir_inode);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int ocfs2_wait_on_mount(struct ocfs2_super *osb)
|
|
{
|
|
/* This check is good because ocfs2 will wait on our recovery
|
|
* thread before changing it to something other than MOUNTED
|
|
* or DISABLED. */
|
|
wait_event(osb->osb_mount_event,
|
|
atomic_read(&osb->vol_state) == VOLUME_MOUNTED ||
|
|
atomic_read(&osb->vol_state) == VOLUME_DISABLED);
|
|
|
|
/* If there's an error on mount, then we may never get to the
|
|
* MOUNTED flag, but this is set right before
|
|
* dismount_volume() so we can trust it. */
|
|
if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) {
|
|
mlog(0, "mount error, exiting!\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ocfs2_commit_thread(void *arg)
|
|
{
|
|
int status;
|
|
struct ocfs2_super *osb = arg;
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
|
|
/* we can trust j_num_trans here because _should_stop() is only set in
|
|
* shutdown and nobody other than ourselves should be able to start
|
|
* transactions. committing on shutdown might take a few iterations
|
|
* as final transactions put deleted inodes on the list */
|
|
while (!(kthread_should_stop() &&
|
|
atomic_read(&journal->j_num_trans) == 0)) {
|
|
|
|
wait_event_interruptible_timeout(osb->checkpoint_event,
|
|
atomic_read(&journal->j_num_trans)
|
|
|| kthread_should_stop(),
|
|
OCFS2_CHECKPOINT_INTERVAL);
|
|
|
|
status = ocfs2_commit_cache(osb);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){
|
|
mlog(ML_KTHREAD,
|
|
"commit_thread: %u transactions pending on "
|
|
"shutdown\n",
|
|
atomic_read(&journal->j_num_trans));
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Look for a dirty journal without taking any cluster locks. Used for
|
|
* hard readonly access to determine whether the file system journals
|
|
* require recovery. */
|
|
int ocfs2_check_journals_nolocks(struct ocfs2_super *osb)
|
|
{
|
|
int ret = 0;
|
|
unsigned int slot;
|
|
struct buffer_head *di_bh;
|
|
struct ocfs2_dinode *di;
|
|
struct inode *journal = NULL;
|
|
|
|
for(slot = 0; slot < osb->max_slots; slot++) {
|
|
journal = ocfs2_get_system_file_inode(osb,
|
|
JOURNAL_SYSTEM_INODE,
|
|
slot);
|
|
if (!journal || is_bad_inode(journal)) {
|
|
ret = -EACCES;
|
|
mlog_errno(ret);
|
|
goto out;
|
|
}
|
|
|
|
di_bh = NULL;
|
|
ret = ocfs2_read_block(osb, OCFS2_I(journal)->ip_blkno, &di_bh,
|
|
0, journal);
|
|
if (ret < 0) {
|
|
mlog_errno(ret);
|
|
goto out;
|
|
}
|
|
|
|
di = (struct ocfs2_dinode *) di_bh->b_data;
|
|
|
|
if (le32_to_cpu(di->id1.journal1.ij_flags) &
|
|
OCFS2_JOURNAL_DIRTY_FL)
|
|
ret = -EROFS;
|
|
|
|
brelse(di_bh);
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
out:
|
|
if (journal)
|
|
iput(journal);
|
|
|
|
return ret;
|
|
}
|