Hi! I'm not sure whether this *should* be possible, but I think it *shouldn't* crash: I created a snapshot of the root directory within a subdirectory: # mount /dev/sde2 /mnt # cd /mnt # mkdir save # btrfs subvolume snapshot . save/snap1 # umount /mnt Then I tried to mount the snapshot: # mount -o subvol=save/snap1 /dev/sde2 /mnt This inevitably leads to a segfault in the btrfs-driver crashing the whole system. I tried this with kernel versions 2.6.32 and 2.6.37.rc4. If I create the subvolume within the root directory of the btrfs volume everything works fine. I'm using btrfs for nearly a year by now (since the release of 2.6.32) and am using subvolumes within subdirectories since then but never tried to directly mount one until today, when my main btrfs volume crashed (by a hardware failure or due to a bug in 2.6.36 - I don't know). If you cannot reproduce this behaviour I can try to send you the kernel log (not so easy, because the system crashes and I will have to write it down by hand). Greetings, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
