[zfs-discuss] convert LVM to ZFS
Manuel Amador (Rudd-O)
rudd-o at rudd-o.com
Thu Jul 28 21:37:17 EDT 2011
You could do striping... but say bye to the reliability.
On Thu, 2011-07-28 at 20:58 -0400, Outback Dingo wrote:
> On Thu, Jul 28, 2011 at 8:44 PM, Christ Schlacta <aarcane at aarcane.org>
> On 7/28/2011 15:38, Dingo wrote:
> ive installed zfs on a Oneric 11.10 kubuntu desktop,
> it currently uses
> lvm with 2 drives being 1 500GB drives and 1 750GB
> drive creating a
> root / of 1.2T
> df -h
> /dev/mapper/G53SW-root 1.2T 74G 1007G 7% /
> its currently under LVM / ext4.... how would i convert
> it to be ZFS
> for the same result.... and could it be encrypted?
> You would have to shrink the LV to exist on only one of those
> drives, then remove the other drive from the VG. the command
> you want to do this is vgreduce. Once the drive is removed,
> you create a zpool on that drive, then you migrate your data
> (tar, cp, rsync, etc.) then you destroy your volume group and
> add the remaining device to the new zpool. zpool only works
> on mirror, not on stripe, so you'll end up with a volume of
> 500GB with raid1 reliability.
> Darn i was going for size..... Guess i could create two pools, one for
> OS/Applications/home the other for development stuff, though, even if
> i did mirror, wouldnt i be wasting 250GB as the first disk is only
> and anyway to encrypt this such as you can with FreeBSD Geli..... ?
> Anything comparable in linux ?
> to do the migration, you should follow the zfsroot install
> guides, but substitute debootstrap with rsync/cp/tar and
> everything else should just about work. you don't need the
> livecd, you should be able to do the work from your existing
> OS (but using the livecd might make the process a bit easier
> if you're inexperienced with linux)
More information about the zfs-discuss