On Thu, Oct 27, 2011 at 10:22 PM, Ken D'Ambrosio <ken@xxxxxxxx> wrote: > So, I was trying to downgrade my Ubuntu last night, and, before doing anything > risky like that, I backed up my disk via dd to an image on an external disk. some of us make use of snapshot/clone, whether it's using btrfs or zfs :) > So, I dd'd everything back, and now it crashes on boot. Booting to a 2.6.x > kernel (which is what I had on-hand on a USB drive) mounts it, but doesn't let > me *do* anything (though it spews btrfs errors in dmesg). What do you mean don't let you do anything? Can you mount it read-only and copy the data off the disk? > Getting Ubuntu 11.10 > (kernel rev. 3.0.0) gives me this: I'd try 3.1. If you use 11.10 try http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1-oneiric/ > > [ 121.226246] device fsid d657ce6a-d353-4c2c-858a-6a1f4d9e766e devid 1 transid > 217713 /dev/sda1 > [ 121.232430] parent transid verify failed on 100695031808 wanted 217713 found > 217732 > [ 121.232898] parent transid verify failed on 100695031808 wanted 217713 found > 217732 > [ 121.233357] parent transid verify failed on 100695031808 wanted 217713 found > 217732 > [ 121.233365] parent transid verify failed on 100695031808 wanted 217713 found > 217732 > [ 121.248231] btrfs: open_ctree failed > As I have this complete image on-disk, I'm more than willing to try Extreme > Measures(tm), whatever that might entail. Try getting source of btrfs-progs, do "make btrfs-zero-log", and use it. -- Fajar -- 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
