On reflection, a better default location for hot-adding bitmaps with version-1 superblocks is immediately after the superblock. There might not be much room there, but there is usually atleast 3k, and that is a good start. Signed-off-by: Neil Brown <neilb@xxxxxxx> ### Diffstat output ./drivers/md/md.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff ./drivers/md/md.c~current~ ./drivers/md/md.c --- ./drivers/md/md.c~current~ 2005-09-02 15:59:28.000000000 +1000 +++ ./drivers/md/md.c 2005-09-02 15:59:39.000000000 +1000 @@ -957,8 +957,7 @@ static int super_1_validate(mddev_t *mdd mddev->events = le64_to_cpu(sb->events); mddev->bitmap_offset = 0; mddev->default_bitmap_offset = 0; - if (mddev->minor_version == 0) - mddev->default_bitmap_offset = -(64*1024)/512; + mddev->default_bitmap_offset = 1024; mddev->recovery_cp = le64_to_cpu(sb->resync_offset); memcpy(mddev->uuid, sb->set_uuid, 16); - 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
