diff options
| author | Hyman Huang(黄勇) <yong.huang@smartx.com> | 2023-06-07 22:58:32 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2023-07-26 10:55:56 +0200 |
| commit | 09f9ec99133ab5735b57486323d9c592630c9fc1 (patch) | |
| tree | 3d16c040f5a7038cf1b81c8d6296f94b279c9673 /migration/options.c | |
| parent | 4d8078571906932c496ddeda541fb4b026fd12f5 (diff) | |
qapi/migration: Introduce vcpu-dirty-limit parameters
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-parameters.
This two parameters are used to help implement the dirty
page rate limit algo of migration.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-3@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/options.c')
| -rw-r--r-- | migration/options.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/migration/options.c b/migration/options.c index 1de63ba775..7d2d98830e 100644 --- a/migration/options.c +++ b/migration/options.c @@ -81,6 +81,7 @@ DEFINE_PROP_BOOL(name, MigrationState, capabilities[x], false) #define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT_PERIOD 1000 /* milliseconds */ +#define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT 1 /* MB/s */ Property migration_properties[] = { DEFINE_PROP_BOOL("store-global-state", MigrationState, @@ -168,6 +169,9 @@ Property migration_properties[] = { DEFINE_PROP_UINT64("x-vcpu-dirty-limit-period", MigrationState, parameters.x_vcpu_dirty_limit_period, DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT_PERIOD), + DEFINE_PROP_UINT64("vcpu-dirty-limit", MigrationState, + parameters.vcpu_dirty_limit, + DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT), /* Migration capabilities */ DEFINE_PROP_MIG_CAP("x-xbzrle", MIGRATION_CAPABILITY_XBZRLE), @@ -915,6 +919,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp) params->has_x_vcpu_dirty_limit_period = true; params->x_vcpu_dirty_limit_period = s->parameters.x_vcpu_dirty_limit_period; + params->has_vcpu_dirty_limit = true; + params->vcpu_dirty_limit = s->parameters.vcpu_dirty_limit; return params; } @@ -949,6 +955,7 @@ void migrate_params_init(MigrationParameters *params) params->has_announce_rounds = true; params->has_announce_step = true; params->has_x_vcpu_dirty_limit_period = true; + params->has_vcpu_dirty_limit = true; } /* @@ -1118,6 +1125,14 @@ bool migrate_params_check(MigrationParameters *params, Error **errp) return false; } + if (params->has_vcpu_dirty_limit && + (params->vcpu_dirty_limit < 1)) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, + "vcpu_dirty_limit", + "is invalid, it must greater then 1 MB/s"); + return false; + } + return true; } @@ -1222,6 +1237,9 @@ static void migrate_params_test_apply(MigrateSetParameters *params, dest->x_vcpu_dirty_limit_period = params->x_vcpu_dirty_limit_period; } + if (params->has_vcpu_dirty_limit) { + dest->vcpu_dirty_limit = params->vcpu_dirty_limit; + } } static void migrate_params_apply(MigrateSetParameters *params, Error **errp) @@ -1345,6 +1363,9 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp) s->parameters.x_vcpu_dirty_limit_period = params->x_vcpu_dirty_limit_period; } + if (params->has_vcpu_dirty_limit) { + s->parameters.vcpu_dirty_limit = params->vcpu_dirty_limit; + } } void qmp_migrate_set_parameters(MigrateSetParameters *params, Error **errp) |