Restoring deleted/resized logical volume

calm_downCalm yourself down

Congratulations, you managed to accidentaly remove useful logical volume!
No worries! Calm down, it’s all fine, we’ll get it back in few simple steps. Luckily, LVM archives all removed logical volumes when you make lvremove. In order to get it back we can use LVM’s native commands. All we have to do, is find which logical volume file to restore.

Find correct volume

Okay, first go to /etc/lvm/archive. Make sure you find your volume group name first, then find specific increment of your deleted logical volume. In order to verify if this is correct .vg file, you can check head of this file:

vs001 /etc/lvm/archive $ head -n 10
# Generated by LVM2 version 2.02.54(1) (2009-10-26): Fri Jun 14 16:03:11 2013

contents = "Text Format Volume Group"
version = 1

description = "Created *before* executing 'lvremove /dev/VG/LV_NTP'"

If you look closely there is this lvremove /dev/VG/LV_NTP which is my command I used to delete my logical volume accidentally. There can be other descriptions also, for example, If you resized, shrinked, or any way otherwise modify your logical volume with LVM commands. You can recover any of that.


Let’s test our restoration of logical volume first:

vgcfgrestore VG --test -f /etc/lvm/archive/
Test mode: Metadata will NOT be updated.
Restored volume group VG

Now that you see this would work, run same command again, but without –test parameter. You should see:

Restored volume group VG

Type lvscan and verify you see your Logical Volume. If it’s listed as inactive state, just change it back to active with command: lvchange -a y /dev/VG/LV_NTP


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