0

I have a thin-provisioning storage, on top of which I created an LVM disk. I didn't know that I had to set issue_discards = 1 in lvm.conf in order to have my disks actually deleted when I run lvremove.

I activated the option and it's working fine for new LVs, however I would like to reactivate the old disks using the metadata backups (I have all the archives) so I can delete them safely.

I know of this answer where they restore the disks through start size and offset, but I'm unsure if I can use it because I suspect that offset could have been reused in the meantime (maybe it's a stupid assumption given that the actual storage still had those sectors marked as occupied).

Is it possible to simply remap the LV in /dev/mapper using the id I find in the metadata backup?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.