Commit 87aa6300 authored Apr 28, 2010 by Gabriele A. Trombetti Committed by NeilBrown May 07, 2010

md/raid6: Fix raid-6 read-error correction in degraded state



Fix: Raid-6 was not trying to correct a read-error when in
singly-degraded state and was instead dropping one more device, going to
doubly-degraded state. This patch fixes this behaviour.

Tested-by: Janos Haar <janos.haar@netcenter.hu>
Signed-off-by: Gabriele A. Trombetti <g.trombetti.lkrnl1213@logicschema.com>
Reported-by: Janos Haar <janos.haar@netcenter.hu>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org

parent 722154e4

drivers/md/raid5.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -1527,7 +1527,7 @@ static void raid5_end_read_request(struct bio * bi, int error)

	clear_bit(R5_UPTODATE, &sh->dev[i].flags);		clear_bit(R5_UPTODATE, &sh->dev[i].flags);
	atomic_inc(&rdev->read_errors);		atomic_inc(&rdev->read_errors);
	if (conf->mddev->degraded)		if (conf->mddev->degraded >= conf->max_degraded)
	printk_rl(KERN_WARNING		printk_rl(KERN_WARNING
	"raid5:%s: read error not correctable "		"raid5:%s: read error not correctable "
	"(sector %llu on %s).\n",		"(sector %llu on %s).\n",