ext4 to xfs final fsck failed

[rkhadro]

Hi,

I try to transform a logical volume (lvm) from ext4 to xfs.
./fstransform /dev/mapper/data--elastic-lvdata xfs

All goes smoothly except:
The last fsck didn't pass because it's invoking fsck.ext4 instead of fsck.xfs
But the volume is in good condition when i run xfs_repair

12:40:07 fstransform: running again '/sbin/fsck' (disk check) on device '/dev/mapper/data--elastic-lvdata'
12:40:07 fsck: fsck from util-linux 2.27.1
12:40:07 fsck: fsck.ext4: Bad magic number in super-block while trying to open /dev/mapper/data--elastic-lvdata
12:40:07 fsck: /dev/mapper/data--elastic-lvdata:
12:40:07 fsck: The superblock could not be read or does not describe a valid ext2/ext3/ext4
12:40:07 fsck: filesystem. If the device is valid and it really contains an ext2/ext3/ext4
12:40:07 fsck: filesystem (and not swap or ufs or something else), then the superblock
12:40:07 fsck: is corrupt, and you might try running e2fsck with an alternate superblock:
12:40:07 fsck: e2fsck -b 8193
12:40:07 fsck: or
12:40:07 fsck: e2fsck -b 32768
12:40:07 fsck:

12:40:07 ERROR! fstransform: command '/sbin/fsck -p -f /dev/mapper/data--elastic-lvdata' failed (exit status 8)
this is potentially a problem.
you can either quit now by pressing ENTER or CTRL+C,

            or, if you know what went wrong, you can fix it yourself,
            then manually run the command '/sbin/fsck -p -f /dev/mapper/data--elastic-lvdata'
            (or something equivalent)
            and finally resume this script by typing CONTINUE and pressing ENTER: packet_write_wait: Connection to 10.181.80.107 port 22: Broken pipe

[cosmos72]

Hi,

so the filesystem is successfully converted from ext4 to xfs - it's just that fsck got confused and launched fsck.ext2 instead of xfs_repair ?

Thanks for the report, and good to know the conversion was successful.

I will override fstransform heuristic and directly execute xfs_repair on xfs instead of the generic fsck.

By the way, which version of fstransform are you using?

[rkhadro]

Hi,

Yes the conversion went well.
I cloned it from this repo yesterday.

[aurelio1]

I did a conversion from reiserfs to xfs (version 0.9.3. retrieved from OpenSuSE repository) and got the same problem. The final fsck tried to check a reiserfs filesystem (instead of xfs). A (manual) test with xfs_repair showed that the xfs conversion had been done without any problem.

[cosmos72]

Thanks, I will investigate it :)