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Re: Using loadvm with snapshot
From: |
Dr. David Alan Gilbert |
Subject: |
Re: Using loadvm with snapshot |
Date: |
Tue, 17 Aug 2021 17:26:06 +0100 |
User-agent: |
Mutt/2.0.7 (2021-05-04) |
* Gabriel Southern (gsouther@qti.qualcomm.com) wrote:
> Hi,
>
> Are there plans to support using -loadvm with -snapshot?
>
> I saw some past discussion on mailing list including bug that was closed
> earlier this year but no recent activity:
>
> https://lore.kernel.org/qemu-devel/162424905685.11837.7303570061857383641.malone@loganberry.canonical.com/
>
> Testing with latest qemu it looks like -loadvm still does not work when
> combined with -snapshot.
>
> I'm curious how complex it would be to implement this feature and if it may
> show up on QEMU roadmap in the future. Or if there is alterative command that
> can be used to save the state of a running VM and then use the same qcow to
> run multiple QEMU instances loading this VM state running in snapshot mode.
One thing that might work for you is migrate to a file;
(qemu) migrate_set_parameter max-bandwidth 100G
(qemu) migrate "exec:cat > myfile.mig"
(qemu) q
qemu -incoming "exec:cat myfile.mig"
Dave
>
> Thanks,
>
> -Gabriel
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK