Re: [Qemu-devel] [RFC V2, PATCH 0/2] Checkpoint-assisted migration proposal

[Eric Blake]

On 11/24/2015 09:42 AM, Bohdan Trach wrote:
> Changes from V1:
>   - Use ELF dumps produced by the dump-guest-memory command;
>   - Use checkpoints for all memory blocks;
>   - Use trace_ instead of DPRINTF;
>   - removed RAM_SAVE_FLAG_PAGE_HASH flag;
>   - General code cleanup and update to latest QEMU codebase.
> 
> This patchset contains a checkpoint-assisted migration feature as
> proposed earlier on this list [1]. It allows reusing existing memory
> snapshots of guests to speed up migration of VMs between physical
> hosts.
> 
> [1] https://lists.gnu.org/archive/html/qemu-devel/2015-04/msg01555.html
> 
> Bohdan Trach (2):
>   migration: implement checkpoint loading
>   migration: use checkpoint during migration
> 
>  include/migration/migration.h |   4 +
>  migration/ram.c               | 288 
> ++++++++++++++++++++++++++++++++++++++++--
>  qemu-options.hx               |   9 ++
>  trace-events                  |   8 ++
>  vl.c                          |   9 ++
>  5 files changed, 309 insertions(+), 9 deletions(-)

This touches the command line, but not any QMP .json files.  Is this new
feature properly discoverable using existing QMP commands, or is this
something lacking in the proposal?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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