[Pkg-sysvinit-devel] Bug#571241: Bug#571241: checkroot.sh: should not try to fsck rootfs on ubifs

[Ron]

Hi,

Just some followup on this one ...

> Does it not work to specify in /etc/fstab that the file system should
> not be checked?  If no fsck is available for ubifs, which program is
> used to do the fsck-ing?  I thought fsck used fsck.$type to do the
> actual fsck operation.

This is what I'm seeing on squeeze from a couple of days ago:

 Checking root file system...fsck from util-linux-ng 2.17.2
 fsck: fsck.ubifs: not found
 fsck: Error 2 while executing fsck.ubifs for /dev/root
 done.

So it is indeed ignoring the fstab option I set for it:

/dev/root  / ubifs   defaults,noatime,rw   0 0


As to your question about fsck.ubifs, the answer to that can be found in
linux/Documentation/filesystems/ubifs.txt, the relevant part being:

 Similarly to JFFS2, UBIFS is tolerant of unclean reboots and power-cuts.
 It does not need stuff like fsck.ext2. UBIFS automatically replays its
 journal and recovers from crashes, ensuring that the on-flash data
 structures are consistent.

It does that at boot before userspace is even entered (during the ubifs
probe kernelside).


So indeed, this probably should be an exception to the normal fsck.$type
case, though just respecting the fstab selection would probably be enough
as well.  Since there are quite few devices using ubifs and shipping with
Debian on them by default now, it would be nice to tick this one off for
the squeeze release if we can.

Cheers,
Ron