Unable to delete BTRFS snapshot

[Sreyan Chakravarty <sreyan32@xxxxxxxxx>]

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

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 may be related to that you can find the long discussion here:

https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx/thread/CKYVNI7OP4ECK6JC242S3TYEP2NA3HEY/#OGZLAWZXU5GCCQRKY3KI6D475LRH47FN

 

--

Regards,

Sreyan Chakravarty

_______________________________________________
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