From: Markus Hochholdinger <markus@xxxxxxxxxxxxxxxxx> The superblock of version 1.0 doesn't get moved to the new position on a device size change. This leads to a rdev without a superblock on a known position, the raid can't be re-assembled. Fixes: commit d9c0fa509eaf ("md: fix max sectors calculation for super 1.0") --- drivers/md/md.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index 6c0c3d0d905a..ad968cfc883d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2193,6 +2193,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors) if (!num_sectors || num_sectors > max_sectors) num_sectors = max_sectors; + rdev->sb_start = sb_start; } sb = page_address(rdev->sb_page); sb->data_size = cpu_to_le64(num_sectors); -- 2.30.2