volume_id: run only once into a timeout for unreadable devices

diff --git a/extras/volume_id/lib/volume_id.c b/extras/volume_id/lib/volume_id.c
index 59303d5..b82de23 100644 (file)
--- a/extras/volume_id/lib/volume_id.c
+++ b/extras/volume_id/lib/volume_id.c
@@ -347,6 +347,10 @@ int volume_id_probe_raid(struct volume_id *id, uint64_t off, uint64_t size)
        if (id == NULL)
                return -EINVAL;
 
+       /* run only once into a timeout for unreadable devices */
+       if (volume_id_get_buffer(id, 0x00, 0x200) == NULL)
+               return -1;
+
        info("probing at offset 0x%llx, size 0x%llx",
            (unsigned long long) off, (unsigned long long) size);
 
@@ -378,6 +382,10 @@ int volume_id_probe_filesystem(struct volume_id *id, uint64_t off, uint64_t size
        if (id == NULL)
                return -EINVAL;
 
+       /* run only once into a timeout for unreadable devices */
+       if (volume_id_get_buffer(id, 0x00, 0x200) == NULL)
+               return -1;
+
        info("probing at offset 0x%llx, size 0x%llx",
            (unsigned long long) off, (unsigned long long) size);