On Tue, Aug 3, 2021 at 1:51 AM Sreyan Chakravarty <sreyan32@xxxxxxxxx> wrote: > > Hi, > > I am faced with a strange problem. I have a BTRFS snapshot that I want to delete but just can't. > > So I always manipulate BTRFS snapshots from a live-cd environment which I setup using the following commands: > > sudo cryptsetup open /dev/sda3 dm-crypt > <<GIVE PASSWORD>> > sudo mount /dev/mapper/dm-crypt /mnt > > Now I can query the snapshots: > > $ sudo btrfs subvolume list /mnt > ID 448 gen 235989 top level 5 path root > ID 449 gen 0 top level 5 path before_live_cd_exp > > I want to delete the snapshot "before_live_cd_exp", which I am unable to do: > > $ sudo btrfs subvolume delete /mnt/before_live_cd_exp/ > ERROR: Not a Btrfs subvolume: Invalid argument > > What does it mean it's not a Btrfs subvolume ? It was picked up by the list command. > > I also tried via the subvolid: > > $ sudo btrfs subvolume delete --subvolid 449 /mnt > Delete subvolume (no-commit): '/mnt/before_live_cd_exp' > ERROR: Could not destroy subvolume/snapshot: No such file or directory What messages appear in dmesg and coincide with the failed command? I haven't heard of anyone being unable to delete snapshots before. But also suspicious about this particular snapshot (which I also haven't ever seen) is its generation is 0. Even brand new subvolumes on a brand new file system have non-zero generation. > This is even weirder since as you can clearly see the directory exists in the given path. > > Any suggestions on what is going wrong ? > > I should tell you that a while back I had a huge BTRFS file system crash, and it took a lot of targeted help from the community to get my system to boot. This could be a side effect of an incomplete repair. -- Chris Murphy _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
