Le 19/09/2012 19:36, Josef Bacik a écrit :

It can happen for all sorts of different reasons. Did you have a
unclean unmount at some point?

Not that I'm aware of...

Do you have a particularly full file system?

~1 TB FS, 23% full...

Only, I have several Linux distros installed on the same BTRFS  - in
different subvols - so I sometimes mount it with a 3.5.x kernel, and
more rarely - but sometimes - with a 3.2.x...

=> Also I have to mention that I have lost a complete BTRFS FS, that was
a /boot with snapshots. At some point it started to fail mounting, the
kernel complaining that some trees (corresponding to removed snapshots
as far as I could tell) were b0rked, and btrfsck couldn't help...

So I lost the FS - and lost quite a bit of confidence into BTRFS the
same day... :-\


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