From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:39291) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UaWla-0000KC-CE for qemu-devel@nongnu.org; Thu, 09 May 2013 15:44:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UaWlY-0003HX-Gk for qemu-devel@nongnu.org; Thu, 09 May 2013 15:44:38 -0400 Received: from g6t0185.atlanta.hp.com ([15.193.32.62]:34009) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UaWlY-0003HC-Bx for qemu-devel@nongnu.org; Thu, 09 May 2013 15:44:36 -0400 From: Chegu Vinod Date: Thu, 9 May 2013 12:43:19 -0700 Message-Id: <1368128600-30721-3-git-send-email-chegu_vinod@hp.com> In-Reply-To: <1368128600-30721-1-git-send-email-chegu_vinod@hp.com> References: <1368128600-30721-1-git-send-email-chegu_vinod@hp.com> Subject: [Qemu-devel] [RFC PATCH v5 2/3] Add 'auto-converge' migration capability List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: eblake@redhat.com, anthony@codemonkey.ws, quintela@redhat.com, owasserm@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org Cc: Chegu Vinod 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 --- 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 3eb0fad..570cee5 100644 --- a/migration.c +++ b/migration.c @@ -474,6 +474,15 @@ 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 199744a..b33839c 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -602,10 +602,13 @@ # This feature allows us to minimize migration traffic for certain work # loads, by sending compressed difference of the pages # +# @auto-converge: Migration supports automatic throttling down of guest +# to force convergence. (since 1.6) +# # Since: 1.2 ## { 'enum': 'MigrationCapability', - 'data': ['xbzrle'] } + 'data': ['xbzrle', 'auto-converge'] } ## # @MigrationCapabilityStatus -- 1.7.1