cpr: relax blockdev migration blockers

Some blockdevs block migration because they do not support sharing across
hosts and/or do not support dirty bitmaps.  These prohibitions do not apply
if the old and new qemu processes do not run concurrently, and if new qemu
starts on the same host as old, which is the case for cpr.  Narrow the scope
of these blockers so they only apply to normal mode.  They will not block
cpr modes when they are added in subsequent patches.

No functional change until a new mode is added.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <1698263069-406971-4-git-send-email-steven.sistare@oracle.com>

block/parallels.c

@@ -1369,7 +1369,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
                bdrv_get_device_or_node_name(bs));
     bdrv_graph_rdunlock_main_loop();
 
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail;
     }

block/qcow.c

@@ -307,7 +307,7 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
                bdrv_get_device_or_node_name(bs));
     bdrv_graph_rdunlock_main_loop();
 
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail;
     }

block/vdi.c

@@ -498,7 +498,7 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
                bdrv_get_device_or_node_name(bs));
     bdrv_graph_rdunlock_main_loop();
 
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail_free_bmap;
     }

block/vhdx.c

@@ -1096,7 +1096,7 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
     error_setg(&s->migration_blocker, "The vhdx format used by node '%s' "
                "does not support live migration",
                bdrv_get_device_or_node_name(bs));
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail;
     }

block/vmdk.c

@@ -1386,7 +1386,7 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags,
     error_setg(&s->migration_blocker, "The vmdk format used by node '%s' "
                "does not support live migration",
                bdrv_get_device_or_node_name(bs));
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail;
     }

block/vpc.c

@@ -452,7 +452,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
                bdrv_get_device_or_node_name(bs));
     bdrv_graph_rdunlock_main_loop();
 
-    ret = migrate_add_blocker(&s->migration_blocker, errp);
+    ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
     if (ret < 0) {
         goto fail;
     }

block/vvfat.c

@@ -1268,7 +1268,7 @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
                    "The vvfat (rw) format used by node '%s' "
                    "does not support live migration",
                    bdrv_get_device_or_node_name(bs));
-        ret = migrate_add_blocker(&s->migration_blocker, errp);
+        ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
         if (ret < 0) {
             goto fail;
         }