On Tue, Feb 12, 2013 at 11:54:49AM -0700, Richard W.M. Jones wrote: > Btrfs has been broken for me for ages. I first reported it on this > list 5 months ago[1]. Below is a very simple reproducer that anyone > can run. > > *NB* before you run this, adjust /dev/sda & /dev/sda1 to point to an > unused block device! > > ---------------------------------------------------------------------- > #!/bin/sh - > set -e > while true; do > parted -s -- /dev/sda mklabel msdos > parted -s -- /dev/sda mkpart primary 64s -64s > wipefs -a /dev/sda1 > mkfs.btrfs --label TEST /dev/sda1 > mount /dev/sda1 /sysroot > touch /sysroot/foo > mkdir /sysroot/bar > umount /sysroot > done > ---------------------------------------------------------------------- > > On the latest 3.8.0 kernel, this fails immediately (at the mount), and > on 3.7.x it usually fails after a very few iterations. I see a > variety of errors, but the latest kernel error is: > > [ 8.474934] device label ROOT devid 1 transid 2 /dev/sda2 > [ 8.570619] device label ROOT devid 1 transid 2 /dev/sda2 > [ 8.581891] btrfs: disk space caching is enabled > [ 8.594146] btrfs bad tree block start 0 4194304 > [ 8.595144] btrfs: failed to read tree root on sda2 > [ 8.605308] btrfs: open_ctree failed > > I would really like btrfs to work. What can I do? Hi Rich, Can you try the btrfs-progs raid56-experimental branch. It has this patch which was fixing things for me: https://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs.git;a=commit;h=8fe354744cd7b5c4f7a3314dcdbb5095192a032f I'm not 100% sure I've reproduced your exact problem, but I hope this is it. -chris -- 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
