On 06/24/2013 12:49 PM, Chegu Vinod wrote:
> The auto-converge migration capability allows the user to specify if they
> choose live migration seqeunce to automatically detect and force convergence.
>
> Signed-off-by: Chegu Vinod <chegu_vi...@hp.com>
> Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
> Reviewed-by: Eric Blake <ebl...@redhat.com>
> ---
> include/migration/migration.h | 2 ++
> migration.c | 9 +++++++++
> qapi-schema.json | 5 ++++-
> 3 files changed, 15 insertions(+), 1 deletions(-)
>
> diff --git a/include/migration/migration.h b/include/migration/migration.h
> index e2acec6..ace91b0 100644
> --- a/include/migration/migration.h
> +++ b/include/migration/migration.h
> @@ -127,4 +127,6 @@ int migrate_use_xbzrle(void);
> int64_t migrate_xbzrle_cache_size(void);
>
> int64_t xbzrle_cache_resize(int64_t new_size);
> +
> +bool migrate_auto_converge(void);
> #endif
> diff --git a/migration.c b/migration.c
> index 058f9e6..d0759c1 100644
> --- a/migration.c
> +++ b/migration.c
> @@ -473,6 +473,15 @@ void qmp_migrate_set_downtime(double value, Error **errp)
> max_downtime = (uint64_t)value;
> }
>
> +bool migrate_auto_converge(void)
> +{
> + MigrationState *s;
> +
> + s = migrate_get_current();
> +
> + return s->enabled_capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE];
> +}
> +
> int migrate_use_xbzrle(void)
> {
> MigrationState *s;
> diff --git a/qapi-schema.json b/qapi-schema.json
> index a80ee40..c019fec 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -605,10 +605,13 @@
> # This feature allows us to minimize migration traffic for certain
> work
> # loads, by sending compressed difference of the pages
> #
> +# @auto-converge: If enabled, QEMU will automatically throttle down the guest
> +# to speed up convergence of RAM migration. (since 1.6)
> +#
> # Since: 1.2
> ##
> { 'enum': 'MigrationCapability',
> - 'data': ['xbzrle'] }
> + 'data': ['xbzrle', 'auto-converge'] }
>
> ##
> # @MigrationCapabilityStatus
>
Reviewed-by: Orit Wasserman <owass...@redhat.com>
