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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2018-03-28 18:02:07 +0100 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2018-03-29 14:53:16 +0100 |
| commit | 0746a92612276aee69e66dfe6782b0f882d221d5 (patch) | |
| tree | 6f6dbaf375f303d0bf337dcc0c519006d41e1bf5 /migration/migration.c | |
| parent | fc6008f37a6f5779fc8c723823861c43a0abfb44 (diff) | |
| download | focaccia-qemu-0746a92612276aee69e66dfe6782b0f882d221d5.tar.gz focaccia-qemu-0746a92612276aee69e66dfe6782b0f882d221d5.zip | |
migration: Don't activate block devices if using -S
Activating the block devices causes the locks to be taken on the backing file. If we're running with -S and the destination libvirt hasn't started the destination with 'cont', it's expecting the locks are still untaken. Don't activate the block devices if we're not going to autostart the VM; 'cont' already will do that anyway. bz: https://bugzilla.redhat.com/show_bug.cgi?id=1560854 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20180328170207.49512-1-dgilbert@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration/migration.c')
| -rw-r--r-- | migration/migration.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/migration/migration.c b/migration/migration.c index 52a5092add..58bd382730 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -306,13 +306,21 @@ static void process_incoming_migration_bh(void *opaque) Error *local_err = NULL; MigrationIncomingState *mis = opaque; - /* Make sure all file formats flush their mutable metadata. - * If we get an error here, just don't restart the VM yet. */ - bdrv_invalidate_cache_all(&local_err); - if (local_err) { - error_report_err(local_err); - local_err = NULL; - autostart = false; + /* Only fire up the block code now if we're going to restart the + * VM, else 'cont' will do it. + * This causes file locking to happen; so we don't want it to happen + * unless we really are starting the VM. + */ + if (autostart && (!global_state_received() || + global_state_get_runstate() == RUN_STATE_RUNNING)) { + /* Make sure all file formats flush their mutable metadata. + * If we get an error here, just don't restart the VM yet. */ + bdrv_invalidate_cache_all(&local_err); + if (local_err) { + error_report_err(local_err); + local_err = NULL; + autostart = false; + } } /* |