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Re: [Qemu-devel] [PATCH 14/17] add new RanState RAN_STATE_FLIPPING_MIGRA
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 14/17] add new RanState RAN_STATE_FLIPPING_MIGRATE |
Date: |
Thu, 24 Oct 2013 15:16:22 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9 |
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Il 22/10/2013 04:51, Eric Blake ha scritto:
>
> Last time we added a new user-visible runstate, it broke migration
> with older libvirt versions that weren't prepared to see the new
> state (hmm, I need to check if libvirt has fixed that in the
> meantime; adding a cc...). Paolo's advice at the time was that it
> is okay to require a new libvirt when using a new qemu, and that
> libvirt should be taught to treat all unknown RunState as if they
> were 'running'; although for this particular addition it might be
> nicer to have libvirt lump 'inmigrate' and 'flipping-migrate' to
> the same usage.
This is not a problem in this case, because the new runstate will only
appear after enabling a new migration capability. Only new libvirt
will be able to enable the capability and thus reach the new runstate.
Poalo
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[Qemu-devel] [PATCH 15/17] migration-unix: page flipping support on unix outgoing, Lei Li, 2013/10/21
[Qemu-devel] [PATCH 16/17] migration: adjust migration_thread() process for page flipping, Lei Li, 2013/10/21
[Qemu-devel] [PATCH 17/17] hmp: better format for info migrate_capabilities, Lei Li, 2013/10/21