[kwlug-disc] Multiple disks to single mount point
rashkae at tigershaunt.com
Thu Mar 11 15:18:57 EST 2010
Chris Irwin wrote:
> I'm currently using a 3.5" SATA hotswap bay for backups, swapping out a
> drive every week, and swapping a new one in. I'm considering changing
> the UUIDs on my backup filesystems to all be the same, thus I can have
> an entry in /etc/fstab that will work, rather than my current routine of
> manually checking dmesg and mounting/umounting devices directly.
> Can anybody think of a negative side of having duplicated UUIDs? You can
> assume I won't have multiple disks connected at a single time.
> Or is there a better way to control mounting multiple drives to a common
> mount-point? I tried multiple UUID entries in fstab, but it only looks
> for the first if I tell it to mount /mnt/backup and fails with only the
> second drive connected.
I use file system Labels for this, (and my fstab uses LABEL= rather than
In practice, I don't think there's much difference. However, typing in
your own LABEL is easier than a UUID, and unlike UUID's, there really
isn't any expectation that LABEL's are always unique, (though you will
still have unpredictable results if you boot a system that tries to
mount a filesystem with duplicate labels)
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