label: avoid rescaning unusable DM devices

diff --git a/lib/label/label.c b/lib/label/label.c
index 1e777d7c2f32c86c163ef84ae4f57015c7791b39..030d2c578d6c21722c10fc21265fe0365774984f 100644 (file)
--- a/lib/label/label.c
+++ b/lib/label/label.c
@@ -707,6 +707,19 @@ static int _scan_list(struct cmd_context *cmd, struct dev_filter *f,
                if (!rem_prefetches)
                        break;
 
+               /* FIXME: figure better solution to avoid opening DM we shouldn't open */
+               if (dm_is_dm_major(MAJOR(devl->dev->dev)) &&
+                   !device_is_usable(devl->dev, (struct dev_usable_check_params) {
+                                       .check_blocked = 1,
+                                       .check_suspended = ignore_suspended_devices(),
+                                       .check_reserved = 1,
+                                       .check_error_target = 1,
+                                     })) {
+                       log_debug_devs("Scan skips unusuable DM device %s.", dev_name(devl->dev));
+                       dm_list_del(&devl->list);
+                       continue;
+               }
+
                if (!_in_bcache(devl->dev)) {
                        if (!_scan_dev_open(devl->dev)) {
                                log_debug_devs("Scan failed to open %s.", dev_name(devl->dev));