On Tue, Jul 24, 2012 at 08:39:36PM -0400, Marios Titas wrote: > When I create a btrfs volume of size strictly less than 256 MiB then if I do > mount /dev/sdb1 /mnt/test > the kernel tries unsuccessfully to do the mount with many other file systems > before successfully trying with btrfs. For volumes of size larger than > or equal to > 256 MiB it just mounts the volume without doing that. Why is this discrepancy?
Are you using the --mixed option when creating the filesystem? If not, you should do with something that small. Hugo. > Another possibly related symptom is that the volume does not appear in > /dev/disk/by-label and /dev/disk/by-uuid at all. This means that it is > impossible > to mount the volume by uuid or label. > > To make sure that this isn't a udev bug, I booted my system with > init=/bin/bash > in the kernel command line, and then I tried again to mount the > volume. This time > it would not mount it at all unless I explicitly specified the fs > type. On the other > hand, it could mount larger volumes without any issues. > > All the experiments were done in an initially zeroed out disk. I am > using 3.4.6 kernel > with btrfs from 3.5 and the latest btrfs-progs from git. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- In theory, theory and practice are the same. In --- practice, they're different.
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