On Wed, Jan 21, 2015 at 12:04 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > Next you should reboot from Fedora 21 live media, and 'dnf upgrade > btrfs-progs' so that you have btrfs-progs 3.18.1, which is stable. And > use 'btrfs check --repair' in case there are any missing files, this > should find it. After this, you'd update the backup again in case the > first one lacks the missing files. Of course if this is not root, you can just unmount it to do the btrfs check. But if it's root, an alternative to usb booting is to do it from the initramfs. But you need to make sure the initramfs contains the right version. To do that, boot with parameter rd.break=cmdline and then: # btrfs --version Btrfs v3.18.1 ## OK Good I can continue, even if this is the 3.17.8 kernel, it's fine. # btrfs check --repair <dev> # reboot -f I did this with a regular initramfs, I didn't try the rescue initramfs which almost certainly will have an older version, probably 3.17. -- Chris Murphy -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org