Checking XFS Filesystem Consistency With xfs

Checking XFS Filesystem Consistency With xfs_check

The filesystem consistency checking command for XFS filesystems is xfs_check. (fsck is used only for EFS filesystems.) Unlike fsck, xfs_check is not invoked automatically on system startup; xfs_check should be used only if you suspect a filesystem consistency problem. Before running xfs_check, the filesystem to be checked should be unmounted.

The command line for xfs_check is:

# xfs_check device

device is the device file for a disk partition or logical volume that contains an XFS filesystem, for example /dev/dsk/xlv/xlv0.

Unlike fsck, xfs_check does not repair any reported filesystem consistency problems; it only reports them. If xfs_check reports a filesystem consistency problem:

If possible, contact the Silicon Graphics Technical Assistance Center for assistance (see the Release Notes for this product for more information).
To attempt to recover from the problem, follow this procedure:
1. Mount the filesystem using mount -r (read-only).
2. Make a filesystem backup with xfsdump.
3. Use mkfs to a make new filesystem on the same disk partition or XLV logical volume.
4. Restore the files from the backup.