LV reduced with out resize2fs

RGT · 01-19-2015, 12:10 PM

Hi by mistakely i gave a lvextend command with full syntax.

But i dont want to lvextend now. i didnt give resize2fs yet.

But the size got reduced in my VG. how can i get back my space now into the VG.

i dont have downtime to umount the FS.

rknichols · 01-19-2015, 12:42 PM

In /etc/lvm/archive, find the file (it's a text file) with the description "Created *before* executing ... (your lvextend command)". It's probably the most recent one. Then run vgcfgrestore and specify that file with the "--file" option. That should put your VG back the way it was with no harm done.

Actually, if it is the most recent file, you don't even need the "--file" option since that would be the default.

RGT · 01-19-2015, 11:31 PM

Hi rknichols. Can you please give some out put like how the file will be. and hw i need to edit it.

rknichols · 01-20-2015, 08:38 AM

You shouldn't need to edit it. Running

Code:

vgcfgrestore --file {file_name} {vg_name}

will restore the VG back to the state it was in prior to the action in the description. The file will start out something like this

Code:

# Generated by LVM2 version 2.02.111(2)-RHEL6 (2014-09-01): Sun Dec 21 15:49:35 2014

contents = "Text Format Volume Group"
version = 1

description = "Created *before* executing '/sbin/vgs --noheadings -o name --ignoreskippedcluster --config 'log{command_names=0 prefix=\"  \"}''"

The command in the description will obviously be different in your case.