clear hi bits if not used after loading metadata from disk

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

diff --git a/super-intel.c b/super-intel.c
index c65d39bab3f5ba9bf6c92bac1060b83974ff4593..480b37932e44438cce122971df69520bea56058c 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -3590,6 +3590,32 @@ static int load_imsm_mpb(int fd, struct intel_super *super, char *devname)
 
 static int read_imsm_migr_rec(int fd, struct intel_super *super);
 
+/* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
+static void clear_hi(struct intel_super *super)
+{
+       struct imsm_super *mpb = super->anchor;
+       int i, n;
+       if (mpb->attributes & MPB_ATTRIB_2TB_DISK)
+               return;
+       for (i = 0; i < mpb->num_disks; ++i) {
+               struct imsm_disk *disk = &mpb->disk[i];
+               disk->total_blocks_hi = 0;
+       }
+       for (i = 0; i < mpb->num_raid_devs; ++i) {
+               struct imsm_dev *dev = get_imsm_dev(super, i);
+               if (!dev)
+                       return;
+               for (n = 0; n < 2; ++n) {
+                       struct imsm_map *map = get_imsm_map(dev, n);
+                       if (!map)
+                               continue;
+                       map->pba_of_lba0_hi = 0;
+                       map->blocks_per_member_hi = 0;
+                       map->num_data_stripes_hi = 0;
+               }
+       }
+}
+
 static int
 load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd)
 {
@@ -3602,7 +3628,7 @@ load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd
        if (err)
                return err;
        err = parse_raid_devices(super);
-
+       clear_hi(super);
        return err;
 }