On Fri, Oct 19, 2018 at 11:47:14PM -0700, Foppe de Haan wrote: > On Wednesday, October 17, 2018 at 4:44:10 PM UTC+1, unman wrote: > > On Wed, Oct 17, 2018 at 03:51:57AM -0700, Foppe de Haan wrote: > > > (Note that I'm using BTRFS.) > > > > > > When I try to mount the data volume using a Fedora 29b live image, I get > > > "can't read superblock on > > > /dev/mapper/luks-5047683c-2a3f-463d-8538-53701743acca." > > > > > Ah, OK hadn't realised that. > > Is there a specific error message - if it was included in that image you > > attached can you tell me what it was? > > > > If there is a specific BTRFS error have you tried repairing the file > > system? Look at the manpage for btrfs-check. > > There are some dangerous options to try if all else fails: > > 'btrfs check --repair' often does what it says. > > If that doesn't work or you have a tree error, then you could try 'btrfs > > check --init-extent-tree'. I've sometimes doubled on that and recovered > > access. ymmv. > > (If you have a cloned disk you will feel much happier about trying out > > these "dangerous" options, of course.) > > > > unman > > Thank you for the advice. I managed to recover 1 private image, the rest was > salvageable, for whatever reason. (Even VMs that hadn't been started for > days, so there must've been another issue than the one I mentioned; because > if not, the only other conclusion I see is that btrfs is bizarrely fragile.) >
I'm sorry to hear that. I don't use btrfs myself, for just such reasons, although other users find it works for them. I hope you didnt lose too much. If you still have the cloned (or original) disk then you could consider other recovery options depending on how valuable your data was. unman -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/20181020104647.oynpd5kgfv53khzt%40thirdeyesecurity.org. For more options, visit https://groups.google.com/d/optout.
