ZFS: .zfs/snapshot directory vanished

[Attila Bogár]

Hi,

I'm running FreeBSD-9 STABLE.

I noticed, that my .zfs/snapshot directories vanished.  Not all off them 
though, a few datasets have it available.

# cd /export/home/user/.zfs/snapshot
/export/home/user/.zfs/snapshot: Not a directory.

# cd /export/home/user/.zfs
# find .
.
find: ./snapshot: Bad file descriptor
./shares

This looks similar to 
http://lists.freebsd.org/pipermail/freebsd-fs/2012-February/013684.html 
- though it's on 9 and I never turned on dedup.

I appreciate any help solving this problem.

Thanks,
   Attila