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authorzhanghailiang <zhang.zhanghailiang@huawei.com>2016-10-27 14:43:01 +0800
committerAmit Shah <amit@amitshah.net>2016-10-30 15:17:39 +0530
commit68b5359187c3d4164cc546dcdd5ba3e37f0ffb55 (patch)
tree3578eba987a7f30523dcd260eb31b5db4f73c9a6 /migration
parent4291d372e22425e6e8b45466b46a051c82ac4ce1 (diff)
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COLO: Add checkpoint-delay parameter for migrate-set-parameters
Add checkpoint-delay parameter for migrate-set-parameters, so that we can control the checkpoint frequency when COLO is in periodic mode. Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Eric Blake <eblake@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit@amitshah.net>
Diffstat (limited to 'migration')
-rw-r--r--migration/migration.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/migration/migration.c b/migration/migration.c
index d8421b5..d87065a 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -63,6 +63,11 @@
/* Migration XBZRLE default cache size */
#define DEFAULT_MIGRATE_CACHE_SIZE (64 * 1024 * 1024)
+/* The delay time (in ms) between two COLO checkpoints
+ * Note: Please change this default value to 10000 when we support hybrid mode.
+ */
+#define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY 200
+
static NotifierList migration_state_notifiers =
NOTIFIER_LIST_INITIALIZER(migration_state_notifiers);
@@ -95,6 +100,7 @@ MigrationState *migrate_get_current(void)
.cpu_throttle_increment = DEFAULT_MIGRATE_CPU_THROTTLE_INCREMENT,
.max_bandwidth = MAX_THROTTLE,
.downtime_limit = DEFAULT_MIGRATE_SET_DOWNTIME,
+ .x_checkpoint_delay = DEFAULT_MIGRATE_X_CHECKPOINT_DELAY,
},
};
@@ -587,6 +593,7 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp)
params->max_bandwidth = s->parameters.max_bandwidth;
params->has_downtime_limit = true;
params->downtime_limit = s->parameters.downtime_limit;
+ params->x_checkpoint_delay = s->parameters.x_checkpoint_delay;
return params;
}
@@ -845,6 +852,11 @@ void qmp_migrate_set_parameters(MigrationParameters *params, Error **errp)
"an integer in the range of 0 to 2000000 milliseconds");
return;
}
+ if (params->has_x_checkpoint_delay && (params->x_checkpoint_delay < 0)) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+ "x_checkpoint_delay",
+ "is invalid, it should be positive");
+ }
if (params->has_compress_level) {
s->parameters.compress_level = params->compress_level;
@@ -879,6 +891,10 @@ void qmp_migrate_set_parameters(MigrationParameters *params, Error **errp)
if (params->has_downtime_limit) {
s->parameters.downtime_limit = params->downtime_limit;
}
+
+ if (params->has_x_checkpoint_delay) {
+ s->parameters.x_checkpoint_delay = params->x_checkpoint_delay;
+ }
}