On Sat, Mar 14, 2009 at 18:39, Andre Beck <beck@xxxxxx> wrote:
> fooling around with a Debian Sid/Experimental installation on a USB
> flash drive, I had some boot issues as /dev/disk/by-{uuid,label} showed
> no trace of my boot partition. I've tracked this to vol_id not
> recognizing an ext4 block device if the ext4 doesn't have a journal
> (a feature that was added to ext4 as an afterthought for the flash
> drive use case). The code in ext.c makes pretty clear why that happens,
> it will only go into the ext3 branch if there is a journal in the
> first place, and will only recognize ext4 as incompatible features
> on top of ext3 in that branch.
>
> BTW, util-linux mount(8) apparently has the same issue, as it doesn't
> autodetect an unjournaled ext4 and insists on "-t ext4" to mount it.
No, libvolume_id does not support it.
Libvolume_id and blkid got merged and major parts got rewritten by
Karel and we have a new libblkid in util-linux-ng now. We are on the
way to switch udev over to it during the next month. Libvolume_id and
vol_id will no longer be used and deleted from the udev tree.
If you like it detected now, you could provide a patch for it, but
it's unlikely, that it will hit a distro release before we replaced it
with libblkid, which supports it already.
Thanks,
Kay
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