lkml.org 
[lkml]   [2006]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Date
Subject[PATCH 001 of 12] md: Possible fix for unplug problem

I have reports of a problem with raid5 which turns out to be because
the raid5 device gets stuck in a 'plugged' state. This shouldn't be
able to happen as 3msec after it gets plugged it should get unplugged.
However it happens none-the-less. This patch fixes the problem and is
a reasonable thing to do, though it might hurt performance slightly in
some cases.

Until I can find the real problem, we should probably have this
workaround in place.

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

### Diffstat output
./drivers/md/raid5.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2006-06-27 12:15:17.000000000 +1000
+++ ./drivers/md/raid5.c 2006-06-27 12:16:41.000000000 +1000
@@ -271,7 +271,7 @@ static struct stripe_head *get_active_st
< (conf->max_nr_stripes *3/4)
|| !conf->inactive_blocked),
conf->device_lock,
- unplug_slaves(conf->mddev)
+ raid5_unplug_device(conf->mddev->queue)
);
conf->inactive_blocked = 0;
} else
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2006-06-27 09:07    [W:0.056 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site