diff options
| author | Yury Kotov <yury-kotov@yandex-team.ru> | 2019-02-15 20:45:45 +0300 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2019-03-06 10:49:17 +0000 |
| commit | 18269069c31089c3b42ef78ddffe1ee5799e2708 (patch) | |
| tree | c104198b6087f6366578e491819ca0162b0803b2 /migration | |
| parent | 754cb9c0ebcf2164107baf39e75517e459887622 (diff) | |
migration: Introduce ignore-shared capability
We want to use local migration to update QEMU for running guests.
In this case we don't need to migrate shared (file backed) RAM.
So, add a capability to ignore such blocks during live migration.
Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru>
Message-Id: <20190215174548.2630-3-yury-kotov@yandex-team.ru>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/migration.c | 14 | ||||
| -rw-r--r-- | migration/migration.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/migration/migration.c b/migration/migration.c index d45561f9b8..e823fd8b91 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -995,6 +995,11 @@ static bool migrate_caps_check(bool *cap_list, error_setg(errp, "Postcopy is not supported"); return false; } + + if (cap_list[MIGRATION_CAPABILITY_X_IGNORE_SHARED]) { + error_setg(errp, "Postcopy is not compatible with ignore-shared"); + return false; + } } return true; @@ -2074,6 +2079,15 @@ bool migrate_dirty_bitmaps(void) return s->enabled_capabilities[MIGRATION_CAPABILITY_DIRTY_BITMAPS]; } +bool migrate_ignore_shared(void) +{ + MigrationState *s; + + s = migrate_get_current(); + + return s->enabled_capabilities[MIGRATION_CAPABILITY_X_IGNORE_SHARED]; +} + bool migrate_use_events(void) { MigrationState *s; diff --git a/migration/migration.h b/migration/migration.h index c99154dea2..443051adb0 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -265,6 +265,7 @@ bool migrate_release_ram(void); bool migrate_postcopy_ram(void); bool migrate_zero_blocks(void); bool migrate_dirty_bitmaps(void); +bool migrate_ignore_shared(void); bool migrate_auto_converge(void); bool migrate_use_multifd(void); |