Commit b506335e authored May 01, 2017 by Shaohua Li

md/raid10: skip spare disk as 'first' disk

Commit 6f287ca6(md/raid10: reset the 'first' at the end of loop) ignores
a case in reshape, the first rdev could be a spare disk, which shouldn't
be accounted as the first disk since it doesn't include the offset info.

Fix: 6f287ca6(md/raid10: reset the 'first' at the end of loop)
Cc: Guoqing Jiang <gqjiang@suse.com>
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

parent 43ac9b84

drivers/md/raid10.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -4079,9 +4079,9 @@ static int raid10_start_reshape(struct mddev *mddev)
		diff = 0;
		if (first \|\| diff < min_offset_diff)
		min_offset_diff = diff;
		}
		first = 0;
		}
		}

		if (max(before_length, after_length) > min_offset_diff)
		return -EINVAL;