mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
d25522f10c
If one of the backup superblocks is found to differ seriously from superblock 0, write out a fresh copy from the in-core sb. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
70 lines
2 KiB
C
70 lines
2 KiB
C
/*
|
|
* Copyright (C) 2018 Oracle. All Rights Reserved.
|
|
*
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_shared.h"
|
|
#include "xfs_format.h"
|
|
#include "xfs_trans_resv.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_defer.h"
|
|
#include "xfs_btree.h"
|
|
#include "xfs_bit.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_sb.h"
|
|
#include "xfs_inode.h"
|
|
#include "xfs_alloc.h"
|
|
#include "xfs_ialloc.h"
|
|
#include "xfs_rmap.h"
|
|
#include "scrub/xfs_scrub.h"
|
|
#include "scrub/scrub.h"
|
|
#include "scrub/common.h"
|
|
#include "scrub/trace.h"
|
|
|
|
/* Superblock */
|
|
|
|
/* Repair the superblock. */
|
|
int
|
|
xfs_repair_superblock(
|
|
struct xfs_scrub_context *sc)
|
|
{
|
|
struct xfs_mount *mp = sc->mp;
|
|
struct xfs_buf *bp;
|
|
xfs_agnumber_t agno;
|
|
int error;
|
|
|
|
/* Don't try to repair AG 0's sb; let xfs_repair deal with it. */
|
|
agno = sc->sm->sm_agno;
|
|
if (agno == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
error = xfs_sb_get_secondary(mp, sc->tp, agno, &bp);
|
|
if (error)
|
|
return error;
|
|
|
|
/* Copy AG 0's superblock to this one. */
|
|
xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
|
|
xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb);
|
|
|
|
/* Write this to disk. */
|
|
xfs_trans_buf_set_type(sc->tp, bp, XFS_BLFT_SB_BUF);
|
|
xfs_trans_log_buf(sc->tp, bp, 0, BBTOB(bp->b_length) - 1);
|
|
return error;
|
|
}
|