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[SLUG] Migrating from LVM to a plain old disk
- To: slug@xxxxxxxxxxx
- Subject: [SLUG] Migrating from LVM to a plain old disk
- From: James Linder <jam@xxxxxxxxx>
- Date: Sun, 15 Apr 2012 10:59:30 +0800
On 15/04/2012, at 10:00 AM, slug-request@xxxxxxxxxxx wrote:
> I want to migrate away from a LVM Volume Group (2 disks) to a single
> plain old disk (500G).
> Back story: A couple years I thought I might have to learn about LVM.
> So I created a Volume Group using the Debian installer and have never
> done anything else.
> My ideal solution (I think) is if there is a device I can `dd` from,
> and I can just set the destination disk as a non LVM'd disk.
> Some output:
> # vgdisplay
> File descriptor 4 (/dev/urandom) leaked on vgdisplay invocation.
> Parent PID 4932: bash
> --- Volume group ---
> VG Name erupt
> System ID
> Format lvm2
> Metadata Areas 2
> Metadata Sequence No 4
> VG Access read/write
> VG Status resizable
> MAX LV 0
> Cur LV 3
> Open LV 2
> Max PV 0
> Cur PV 2
> Act PV 2
> VG Size 146.71 GiB
> PE Size 4.00 MiB
> Total PE 37557
> Alloc PE / Size 37557 / 146.71 GiB
> Free PE / Size 0 / 0
> VG UUID hrlysx-65nB-56Yt-VwUv-cC5O-wJIr-vjz4Jx
> # pvscan
> File descriptor 4 (/dev/urandom) leaked on pvscan invocation. Parent
> PID 4932: bash
> PV /dev/sdb2 VG erupt lvm2 [36.79 GiB / 0 free]
> PV /dev/sdc2 VG erupt lvm2 [109.92 GiB / 0 free]
> Total: 2 [146.71 GiB] / in use: 2 [146.71 GiB] / in no VG: 0 [0 ]
> Is this asking to much?
Without shadow of doubt dd will fail.
(dd must have the same format to work ie same number of blocks, same partition table etc)
find . (or cat list, whatever) | cpio -pdv > /tothe/newdisk