imsm: fix: report aligned component size value

[thirdparty/mdadm.git] / super-intel.c

diff --git a/super-intel.c b/super-intel.c
index 362e433021ad9114f387e8ab1efa1bdb4cd80536..dc5e34e35f0d09a6c498dcd957b360b4fb5d9873 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -1745,6 +1745,7 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
        struct imsm_map *map_to_analyse = map;
        struct dl *dl;
        char *devname;
+       unsigned int component_size_alligment;
        int map_disks = info->array.raid_disks;
 
        if (prev_map)
@@ -1824,6 +1825,21 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
        info->data_offset         = __le32_to_cpu(map_to_analyse->pba_of_lba0);
        info->component_size      =
                __le32_to_cpu(map_to_analyse->blocks_per_member);
+
+       /* check component size aligment
+        */
+       component_size_alligment =
+               info->component_size % (info->array.chunk_size/512);
+
+       if (component_size_alligment &&
+           (info->array.level != 1) && (info->array.level != UnSet)) {
+               dprintf("imsm: reported component size alligned from %llu ",
+                       info->component_size);
+               info->component_size -= component_size_alligment;
+               dprintf("to %llu (%i).\n",
+                       info->component_size, component_size_alligment);
+       }
+
        memset(info->uuid, 0, sizeof(info->uuid));
        info->recovery_start = MaxSector;