On Wed, Feb 13, 2013 at 11:41:08AM +0100, Lukáš Czerner wrote: > However > > mkfs.btrfs /dev/sda > mkfs.ext4 -F /dev/sda > > works well, however I am not sure why that is. Is that some kind of > mount(8) magic ? This is bug in libmount. Fixed in upstream tree. The libmount in some cases ignores the ambivalent probing result from libblkid and tries stuff from /etc/filesystems (where is for example ext4). > So I think that liblkid _and_ btrfs tools has to be fixed not to treat > backup superblocks as primary! The problem with additional btrfs superblocks has been already reported to btrfs guys: http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg20957.html and I don't see a reply "yep, this is btrfs-progs bug" :-) Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs