super_1_sync only updates fields in the superblock that might have changed. 'raid_disks' and 'size' could have changed, but this information doesn't get updated.... until this patch. Signed-off-by: Neil Brown <neilb@xxxxxxx> ### Diffstat output ./drivers/md/md.c | 3 +++ 1 file changed, 3 insertions(+) diff ./drivers/md/md.c~current~ ./drivers/md/md.c --- ./drivers/md/md.c~current~ 2006-01-24 13:32:25.000000000 +1100 +++ ./drivers/md/md.c 2006-01-24 13:42:29.000000000 +1100 @@ -1162,6 +1162,9 @@ static void super_1_sync(mddev_t *mddev, sb->cnt_corrected_read = atomic_read(&rdev->corrected_errors); + sb->raid_disks = cpu_to_le32(mddev->raid_disks); + sb->size = cpu_to_le64(mddev->size); + if (mddev->bitmap && mddev->bitmap_file == NULL) { sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset); sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html