he guys, updated Kernel to 4.2.0-18-generic and the btrfs error showed up again.
[170600.559206] blk_update_request: I/O error, dev vda, sector 13941312 [170600.567399] BTRFS: bdev /dev/vda1 errs: wr 3, rd 0, flush 0, corrupt 0, gen 0 so its not fixed by now. i've send the apport report. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1513076 Title: Ubuntu 14.04.3 - KVM Guest - btrfs - Kernel Panic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1513076/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs