Booting linux 3.3, I found a particular set of steps [1] produces an fs which is unmountable [2]. This also occurs when data is written after mounting, so is entirely possible to hit in practice if RAID-0 is used.
Many thanks, Daniel --- [1] mkfs.btrfs -m raid0 -d raid0 /dev/sdb1 /dev/sdc1 mount /dev/sdb1 /mnt umount /mnt mount /dev/sdb1 /mnt -o compress umount /mnt mount /dev/sdb1 /mnt -o ssd umount /mnt mount /dev/sdb1 /mnt -o discard umount /mnt mount /dev/sdb1 /mnt <mount failure> --- [2] [13259.593809] btrfs bad tree block start 0 37715968 [13259.593832] btrfs: failed to read tree root on sdc1 [13259.594221] btrfs: open_ctree failed -- Daniel J Blueman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html