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 <lcapitul...@redhat.com>
Cc: Eric Blake <ebl...@redhat.com>
Cc: Markus Armbruster <arm...@redhat.com>
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
Signed-off-by: Li Zhijian <lizhij...@cn.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
v12:
- Change checkpoint-delay to x-checkpoint-delay (Dave's suggestion)
- Add Reviewed-by tag
v11:
- Move this patch ahead of the patch where uses 'checkpoint_delay'
(Dave's suggestion)
v10:
- Fix related qmp command
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
---
hmp.c | 7 +++++++
migration/migration.c | 24 +++++++++++++++++++++++-
qapi-schema.json | 19 ++++++++++++++++---
qmp-commands.hx | 4 ++--
4 files changed, 48 insertions(+), 6 deletions(-)
diff --git a/hmp.c b/hmp.c
index 2140605..ee87d38 100644
--- a/hmp.c
+++ b/hmp.c
@@ -284,6 +284,9 @@ void hmp_info_migrate_parameters(Monitor *mon, const QDict
*qdict)
monitor_printf(mon, " %s: %" PRId64,
MigrationParameter_lookup[MIGRATION_PARAMETER_X_CPU_THROTTLE_INCREMENT],
params->x_cpu_throttle_increment);
+ monitor_printf(mon, " %s: %" PRId64,
+ MigrationParameter_lookup[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY],
+ params->x_checkpoint_delay);
monitor_printf(mon, "\n");
}
@@ -1237,6 +1240,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict
*qdict)
bool has_decompress_threads = false;
bool has_x_cpu_throttle_initial = false;
bool has_x_cpu_throttle_increment = false;
+ bool has_x_checkpoint_delay = false;
int i;
for (i = 0; i < MIGRATION_PARAMETER_MAX; i++) {
@@ -1256,6 +1260,8 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict
*qdict)
break;
case MIGRATION_PARAMETER_X_CPU_THROTTLE_INCREMENT:
has_x_cpu_throttle_increment = true;
+ case MIGRATION_PARAMETER_X_CHECKPOINT_DELAY:
+ has_x_checkpoint_delay = true;
break;
}
qmp_migrate_set_parameters(has_compress_level, value,
@@ -1263,6 +1269,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict
*qdict)
has_decompress_threads, value,
has_x_cpu_throttle_initial, value,
has_x_cpu_throttle_increment, value,
+ has_x_checkpoint_delay, value,
&err);
break;
}
diff --git a/migration/migration.c b/migration/migration.c
index a1074c3..8988358 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -56,6 +56,11 @@
/* 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);
@@ -91,6 +96,8 @@ MigrationState *migrate_get_current(void)
DEFAULT_MIGRATE_X_CPU_THROTTLE_INITIAL,
.parameters[MIGRATION_PARAMETER_X_CPU_THROTTLE_INCREMENT] =
DEFAULT_MIGRATE_X_CPU_THROTTLE_INCREMENT,
+ .parameters[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY] =
+ DEFAULT_MIGRATE_X_CHECKPOINT_DELAY,
};
if (!once) {
@@ -530,6 +537,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error
**errp)
s->parameters[MIGRATION_PARAMETER_X_CPU_THROTTLE_INITIAL];
params->x_cpu_throttle_increment =
s->parameters[MIGRATION_PARAMETER_X_CPU_THROTTLE_INCREMENT];
+ params->x_checkpoint_delay =
+ s->parameters[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY];
return params;
}
@@ -736,7 +745,10 @@ void qmp_migrate_set_parameters(bool has_compress_level,
bool has_x_cpu_throttle_initial,
int64_t x_cpu_throttle_initial,
bool has_x_cpu_throttle_increment,
- int64_t x_cpu_throttle_increment, Error **errp)
+ int64_t x_cpu_throttle_increment,
+ bool has_x_checkpoint_delay,
+ int64_t x_checkpoint_delay,
+ Error **errp)
{
MigrationState *s = migrate_get_current();
@@ -771,6 +783,11 @@ void qmp_migrate_set_parameters(bool has_compress_level,
"x_cpu_throttle_increment",
"an integer in the range of 1 to 99");
}
+ if (has_x_checkpoint_delay && (x_checkpoint_delay < 0)) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+ "x_checkpoint_delay",
+ "is invalid, it should be positive");
+ }
if (has_compress_level) {
s->parameters[MIGRATION_PARAMETER_COMPRESS_LEVEL] = compress_level;
@@ -791,6 +808,11 @@ void qmp_migrate_set_parameters(bool has_compress_level,
s->parameters[MIGRATION_PARAMETER_X_CPU_THROTTLE_INCREMENT] =
x_cpu_throttle_increment;
}
+
+ if (has_x_checkpoint_delay) {
+ s->parameters[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY] =
+ x_checkpoint_delay;
+ }
}
void qmp_migrate_start_postcopy(Error **errp)
diff --git a/qapi-schema.json b/qapi-schema.json
index 0423b47..a5699a7 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -623,11 +623,16 @@
# @x-cpu-throttle-increment: throttle percentage increase each time
# auto-converge detects that migration is not making
# progress. The default value is 10. (Since 2.5)
+#
+# @x-checkpoint-delay: The delay time (in ms) between two COLO checkpoints in
+# periodic mode. (Since 2.6)
+#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
'data': ['compress-level', 'compress-threads', 'decompress-threads',
- 'x-cpu-throttle-initial', 'x-cpu-throttle-increment'] }
+ 'x-cpu-throttle-initial', 'x-cpu-throttle-increment',
+ 'x-checkpoint-delay' ] }
#
# @migrate-set-parameters
@@ -647,6 +652,9 @@
# @x-cpu-throttle-increment: throttle percentage increase each time
# auto-converge detects that migration is not making
# progress. The default value is 10. (Since 2.5)
+#
+# @x-checkpoint-delay: the delay time between two checkpoints. (Since 2.6)
+#
# Since: 2.4
##
{ 'command': 'migrate-set-parameters',
@@ -654,7 +662,8 @@
'*compress-threads': 'int',
'*decompress-threads': 'int',
'*x-cpu-throttle-initial': 'int',
- '*x-cpu-throttle-increment': 'int'} }
+ '*x-cpu-throttle-increment': 'int',
+ '*x-checkpoint-delay': 'int' } }
#
# @MigrationParameters
@@ -673,6 +682,8 @@
# auto-converge detects that migration is not making
# progress. The default value is 10. (Since 2.5)
#
+# @x-checkpoint-delay: the delay time between two COLO checkpoints. (Since 2.6)
+#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@@ -680,7 +691,9 @@
'compress-threads': 'int',
'decompress-threads': 'int',
'x-cpu-throttle-initial': 'int',
- 'x-cpu-throttle-increment': 'int'} }
+ 'x-cpu-throttle-increment': 'int',
+ 'x-checkpoint-delay': 'int'} }
+
##
# @query-migrate-parameters
#
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 91979b4..89756c9 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3651,7 +3651,7 @@ Set migration parameters
- "compress-level": set compression level during migration (json-int)
- "compress-threads": set compression thread count for migration (json-int)
- "decompress-threads": set decompression thread count for migration (json-int)
-
+- "x-checkpoint-delay": set the delay time for periodic checkpoint (json-int)
Arguments:
Example:
@@ -3664,7 +3664,7 @@ EQMP
{
.name = "migrate-set-parameters",
.args_type =
- "compress-level:i?,compress-threads:i?,decompress-threads:i?",
+
"compress-level:i?,compress-threads:i?,decompress-threads:i?,x-checkpoint-delay:i?",
.mhandler.cmd_new = qmp_marshal_migrate_set_parameters,
},
SQMP
--
1.8.3.1
