* how to restore a snapshot in XFS ?
@ 2024-05-12 12:30 Bernd Lentes
2024-05-12 17:51 ` Alexander Puchmayr
0 siblings, 1 reply; 2+ messages in thread
From: Bernd Lentes @ 2024-05-12 12:30 UTC (permalink / raw)
To: linux-xfs
Hi,
I just created a XFS Partition to store raw images of qemu domains on it.
I create snapshots of these files with cp --reflink.
Is that the correct way ?
Now I want to go back to such a snapshot. How do I achieve this ?
Just copy the snapshot over the original ?
Thanks.
Bernd
--
Bernd Lentes
SystemAdministrator
Institute of Metabolism and Cell Death
Helmholtz Zentrum München
Building 25 office 122
Bernd.lentes@helmholtz-munich.de
+49 89 3187 1241
Helmholtz Zentrum München – Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH)
Ingolstädter Landstraße 1, D-85764 Neuherberg, https://www.helmholtz-munich.de
Geschäftsführung: Prof. Dr. med. Dr. h.c. Matthias H. Tschöp, Dr. Michael Frieser | Aufsichtsratsvorsitzende: MinDir’in Prof. Dr. Veronika von Messling
Registergericht: Amtsgericht München HRB 6466 | USt-IdNr. DE 129521671
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: how to restore a snapshot in XFS ?
2024-05-12 12:30 how to restore a snapshot in XFS ? Bernd Lentes
@ 2024-05-12 17:51 ` Alexander Puchmayr
0 siblings, 0 replies; 2+ messages in thread
From: Alexander Puchmayr @ 2024-05-12 17:51 UTC (permalink / raw)
To: linux-xfs
On Sonntag, 12. Mai 2024, 14:30:12 CEST Bernd Lentes wrote:
> Hi,
>
> I just created a XFS Partition to store raw images of qemu domains on it.
> I create snapshots of these files with cp --reflink.
> Is that the correct way ?
>
> Now I want to go back to such a snapshot. How do I achieve this ?
> Just copy the snapshot over the original ?
>
I'm following this strategy for several years now, in in case I need to
restore from such a "backup", I use cp --reflink when copying the snapshot over
the original.
Without the --reflink you'd get a completely new copy of your snapshot, and
when producing new snapshots they will not have anything in common with your
previous snapshots --> more disc space.
Alex
> Thanks.
>
> Bernd
>
>
> --
>
> Bernd Lentes
> SystemAdministrator
> Institute of Metabolism and Cell Death
> Helmholtz Zentrum München
> Building 25 office 122
> Bernd.lentes@helmholtz-munich.de
> +49 89 3187 1241
>
> Helmholtz Zentrum München – Deutsches Forschungszentrum für Gesundheit und
> Umwelt (GmbH)
Ingolstädter Landstraße 1, D-85764 Neuherberg,
> https://www.helmholtz-munich.de Geschäftsführung: Prof. Dr. med. Dr. h.c.
> Matthias H. Tschöp, Dr. Michael Frieser | Aufsichtsratsvorsitzende:
> MinDir’in Prof. Dr. Veronika von Messling Registergericht: Amtsgericht
> München HRB 6466 | USt-IdNr. DE 129521671
^ permalink raw reply [flat|nested] 2+ messages in thread
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