this post was submitted on 13 Mar 2024
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@atzanteol I didn't do anything fancy to be honest the resources pointed at me are not that different from what I did (example)
lvresize -r -L -80G /dev/mapper/laptop--lvm-homeBut I think I got my cue from Arch Linux guide and will boot into a USB and do my resize commands.
Basically end result is just resize home to give root more space. All partitions in LUKS.
I think I got it from here *knock on wood* all that's left is just backup home, cross fingers and hope resizing goes through.
I wasn't expecting anything fancy - I just didn't know what you actually did. 🙂
You can generally resize on-line with LVM, but you're trying to shrink the partition by 80G which is more complicated than expanding. So yes you'll likely want to unmount the FS first as you'll need to shrink the filesystem first, then the logical volume.
I'm assuming your luks partition is just the whole disk as a physical volume in LVM? If so you just leave it alone. Unless you're trying to shrink the luks partition as well?
@atzanteol All's good. Yea, reason for the post was that even though I took the partitions offline it wouldn't still let me resize. So I think the best next move would be just booting into a USB and see if it lets me.
The whole disk well, only the boot is separated. The rest of the partition has the whole space controlled by LVM. Interestingly even though that may be the setup something was just rejecting my resize request.
Sadly have more to say but Mastodon limit is hitting haha. nutshell
Did you already shrink the filesystem? I think lvresize will refuse to shrink if the FS is too big (not sure - I don't shrink volumes often).