On Fri, 18 Mar 2022 at 19:47, Paolo Galtieri <pgalti...@gmail.com> wrote:
> I'm having issues with a VM. > It would be useful to mention the host OS. From the name, I guess your VM is running Fedora 34. > > The VM was originally created under VMware and has worked fine for a > while. Today when I booted it up instead of seeing the usual MATE login > screen I get a login prompt: > > f34-01-vm: > > no matter what I enter, root or pgaltieri as login it never asks for > password and immediately says login incorrect. While it's booting I see > several [FAILED]... messages, e.g. [FAILED] to start CUPS Scheduler > > I booted the system again and this time it dropped into emergency mode. > In emergency mode I see the following messages in dmesg: > > BTRFS info (device sda2): flagging fs with big metadata feature > BTRFS info (device sda2): disk space caching is enabled > BTRFS info (device sda2): has skinny extents > BTRFS info (device sda2): start tree-log replay > BTRFS info (device sda2): parent transid verify failed on 61849600 > wanted 145639 fount 145637 > BTRFS info (device sda2): parent transid verify failed on 61849600 > wanted 145639 fount 145637 > BTRFS: error (device sda2) in btrfs_replay_log:2423 errno=-5 IO failure > (Failed to recover log tree) > BTRFS error (device sda2) open_ctree failed > > I ran btrfs check in emergency mode and it came up with a lot of errors. > > How do i recover the partition(s) so I can boot the system, or at least > mount them? > The underlying problem could be the physical disk that holds the VM's virtual disk file, or a corrupt btrfs. Avoid doing anything that would write to the virtual disk. Make a backup copy of the virtual disk. If the physical drive is OK, use a separate VM to mount the Fedora 34 virtual disk for repair attempts. Try: https://btrfs.wiki.kernel.org/index.php/FAQ How do I recover from a parent transid verify failed error? At one time VirtualBox had issues with btrfs. You should check for similar reports for VMWare and btrfs. -- George N. White III
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