[libvirt-users] domain still running although snapshot-file is deleted !?!

[Peter Crowther]

The file may have been unlinked (name to inode mapping removed from the
filesystem), but the inode and therefore the data will stay until no
process references the inode. I *think* this may be what's happening in
your case?

Peter

On Wed, 15 May 2019, 14:25 Lentes, Bernd, <
bernd.lentes at helmholtz-muenchen.de> wrote:

> Hi,
>
> i have a strange situation:
> A domain is still running where domblklist points to a snapshot file and
> also dumpxml says the current drive is that snapshot file.
> But the file has been deleted hours ago. And the domain is still running.
> I can login via ssh, the database and the webserver are still running,
> domain is performant.
> How can that be ?
> Also lsof shows that the file is deleted:
> qemu-syst 27007             qemu   15ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> qemu-syst 27007             qemu   16ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> qemu-syst 27007 27288       qemu   15ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> qemu-syst 27007 27288       qemu   16ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> CPU\x200/ 27007 27308       qemu   15ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> CPU\x200/ 27007 27308       qemu   16ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> CPU\x201/ 27007 27309       qemu   15ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> CPU\x201/ 27007 27309       qemu   16ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> vnc_worke 27007 27321       qemu   15ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
> vnc_worke 27007 27321       qemu   16ur     REG             254,14
> 335609856     183599 /mnt/snap/sim.sn (deleted)
>
> Bernd
>
> --
>
> Bernd Lentes
> Systemadministration
> Institut für Entwicklungsgenetik
> Gebäude 35.34 - Raum 208
> HelmholtzZentrum münchen
> bernd.lentes at helmholtz-muenchen.de
> phone: +49 89 3187 1241
> phone: +49 89 3187 3827
> fax: +49 89 3187 2294
> http://www.helmholtz-muenchen.de/idg
>
> wer Fehler macht kann etwas lernen
> wer nichts macht kann auch nichts lernen
>
>
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