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2012 Aug 31
0
oops with btrfs on zvol
...''s interesting is: - if I use ext4 (instead of btrfs) on the zvol, it works just fine - if I add a layer on top of zvol (losetup, or iscsi export-import) then btrfs works just fine. Syslog shows this (from Ubuntu''s 3.2 kernel): #===== Aug 31 20:30:13 DELL kernel: [34307.828311] zd0: unknown partition table Aug 31 20:30:34 DELL kernel: [34328.129249] device fsid cfd88ff9-def8-4d1f-9435-65becd5fa2b7 devid 1 transid 4 /dev/zd0 Aug 31 20:30:34 DELL kernel: [34328.134001] btrfs: disk space caching is enabled Aug 31 20:30:34 DELL kernel: [34328.135701] BUG: unable to handle kernel...