control: tags -1 upstream

Hi Joerg!

Joerg Jaspert <jo...@debian.org> writes:
> Source: ganeti
> Version: 2.16.0-5
> Severity: important
>
> Dear Maintainer,
>
> using Ganeti 2.16 and qemu 1:5.0-14~bpo10+1 I tried setting 
> migration_caps for the cluster. But no matter which value i use it 
> breaks migration.
>
> Migration then "goes"
>  - Setup disks and prepare target node
>  - starting memore transfer
>  - "Migration failed, aborting"
>  - Closing disks
>
> That is entirely independent on which value I put into the caps.
>
> Unsetting migration_caps and retrying the migration - it fails again.
>
> Looking more in detail it appears that its setting the caps on the 
> source side. But possibly forgets to set them on the target side so qemu 
> hates doing migration?!
>
> And when it breaks, it forgets to unset the capabilities, so next 
> migrations break too. One has to manually connect to the monitor and 
> unset them, before migration works again.

Thanks for the report.

I'm trying to figure out whether this is a change in the behavior of
recent QEMU versions. Did you do any successful migrations with
migration_caps set on previous QEMU versions?

Cheers,
Apollon

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