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xfs: dump the first 128 bytes of any corrupt buffer 

Increase the corrupt buffer dump to the first 128 bytes since v5
filesystems have larger block headers than before.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-01-08 10:51:26 -08:00
parent d9418ed08a
commit 9c712a1346
3 changed files with 9 additions and 4 deletions
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3
fs/xfs/xfs_buf.c
View File

@ -1381,7 +1381,8 @@ _xfs_buf_ioapply(
xfs_warn(mp,
"%s: no ops on block 0x%llx/0x%x",
__func__, bp->b_bn, bp->b_length);
xfs_hex_dump(bp->b_addr, 64);
xfs_hex_dump(bp->b_addr,
XFS_CORRUPTION_DUMP_LEN);
dump_stack();
}
}

7
fs/xfs/xfs_error.c
View File

@ -336,7 +336,7 @@ xfs_corruption_error(
xfs_failaddr_t failaddr)
{
if (level <= xfs_error_level)
xfs_hex_dump(p, 64);
xfs_hex_dump(p, XFS_CORRUPTION_DUMP_LEN);
xfs_error_report(tag, level, mp, filename, linenum, failaddr);
xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
}
@ -364,8 +364,9 @@ xfs_verifier_error(
xfs_alert(mp, "Unmount and run xfs_repair");
if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
XFS_CORRUPTION_DUMP_LEN);
xfs_hex_dump(xfs_buf_offset(bp, 0), XFS_CORRUPTION_DUMP_LEN);
}
if (xfs_error_level >= XFS_ERRLEVEL_HIGH)

3
fs/xfs/xfs_error.h
View File

@ -39,6 +39,9 @@ extern void xfs_verifier_error(struct xfs_buf *bp, int error,
#define XFS_ERRLEVEL_LOW 1
#define XFS_ERRLEVEL_HIGH 5
/* Dump 128 bytes of any corrupt buffer */
#define XFS_CORRUPTION_DUMP_LEN (128)
/*
* Macros to set EFSCORRUPTED & return/branch.
*/