[Rear-users] Fwd: Re: openSuSE 12.1 / btrfs root on LVM

Schlomo Schapiro schlomo at schapiro.org
Tue Nov 29 17:45:29 CET 2011


Hi,

On 29 November 2011 17:34, Hubertus A. Haniel <hubba at unixcook.com> wrote:

> So running blkid on the running system gives me:
> /dev/sda1: UUID="c19e8510-96d4-45d6-b1d0-796545d81dc5" TYPE="ext4"
> /dev/sda2: UUID="8hRFQs-t3Lh-06Uq-kESV-8YDc-NJC1-jU0201" TYPE="LVM2_member"
> /dev/mapper/rootvg-rootlv: UUID="996f2f57-5656-4df2-b583-0f8eda206558"
> UUID_SUB="203558be-59d8-468a-b49f-db86220871f4" TYPE="btrfs"
> /dev/mapper/rootvg-swaplv: UUID="91d4c8b3-e967-4675-8b80-bd2ed890b22f"
> TYPE="swap"
>
> After the restore I get:
> /dev/sda1: UUID="c19e8510-96d4-45d6-b1d0-796545d81dc5" TYPE="ext4"
> /dev/sda2: UUID="8hRFQs-t3Lh-06Uq-kESV-8YDc-NJC1-jU0201" TYPE="LVM2_member"
> /dev/mapper/rootvg-rootlv: UUID="156775e7-f579-463e-b088-2e680450df5e"
> UUID_SUB="5f8b67bc-76ba-47df-9313-27376cdd1f58" TYPE="btrfs"
> /dev/mapper/rootvg-swaplv: UUID="91d4c8b3-e967-4675-8b80-bd2ed890b22f"
> TYPE="swap"
>

AFAIKT these UUIDs are the UUIDs of the filesystem and not the physical
device. These should be recovered by ReaR. Obviously ReaR does not yet know
how to recover the UUID for btrfs (again, this *is *experimental and we
thank you a lot for the testing!). All other UUIDs are fine.

We just need to add some code to store and set the UUID of the btrfs
filesystem...

Regards,
Schlomo
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