Commit ddcf3522 authored Sep 08, 2010 by NeilBrown

md: fix v1.x metadata update when a disk is missing.

If an array with 1.x metadata is assembled with the last disk missing,
md doesn't properly record the fact that the disk was missing.

This is unlikely to cause a real problem as the event count will be
different to the count on the missing disk so it won't be included in
the array. However it could still cause confusion.

So make sure we clear all the relevant slots, not just the early ones.

Signed-off-by: NeilBrown <neilb@suse.de>

parent 126925c0

drivers/md/md.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1643,7 +1643,9 @@ static void super_1_sync(mddev_t mddev, mdk_rdev_t rdev)
		bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1;
		if (rdev->sb_size & bmask)
		rdev->sb_size = (rdev->sb_size \| bmask) + 1;
		}
		} else
		max_dev = le32_to_cpu(sb->max_dev);

		for (i=0; i<max_dev;i++)
		sb->dev_roles[i] = cpu_to_le16(0xfffe);

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