i know that the proposed ctree.c file is from a kernel source but btrfsck is user space only, since the btrfs-next is newer than btrfs-prog i was hoping for a commit of this change for the user-space version. since this file-system have been created prior kernel 3.2 there is no tree root backup i was hoping using btrfsck to regenerate the csum which are failing during mount time (Input/output error) /var/log/messages: btrfs csum failed ino 1048522 off 5124096 csum 1219517398 private 836806197 i didn't find any way to deactivate csum check with a mount option or as chris say is there a way to regenerate the cache on the block device. is there a solution ? thanks for your responses olivier 2013/1/29 Chris Mason <chris.mason@xxxxxxxxxxxx> > > On Mon, Jan 28, 2013 at 03:03:08PM -0700, David Sterba wrote: > > On Mon, Jan 28, 2013 at 03:07:13PM +0100, polack christian wrote: > > > i did use btrfsck to recover it > > > i got the tool from > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git > > > > > > and i got this error message: > > > ... > > > Check tree block failed, want=294555648, have=0 > > > Check tree block failed, want=294559744, have=0 > > > Check tree block failed, want=294559744, have=0 > > > btrfsck: ctree.c:1690: leaf_space_used: Assertion `!(data_len < 0)' failed. > > > Aborted (core dumped) > > > > > > looking at > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git > > > > but this is a kernel source repository, not progs, I wonder > > > > > this error in ctree.c have been corrected by this commit > > > > > > http://git.kernel.org/?p=linux/kernel/git/josef/btrfs-next.git;a=commit;h=41be1f3b40b87de33cd2e7463dce88596dbdccc4 > > > > how this could happen. I have looked at the whether it does not silently > > fix a bug, nothing wrong I can see now. How did you verify that the > > patch fixes the fsck problem? > > It sounds much more like the reboot or remount cleared the cache on the > block device. > > -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
