linux-kernel - [PATCH 1/2] cciss: set default raid level when reading geometry fails

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Message-ID: <20061215204922.GA8682@beardog.cca.cpqcorp.net>
Date:	Fri, 15 Dec 2006 14:49:22 -0600
From:	"Mike Miller (OS Dev)" <mikem@...rdog.cca.cpqcorp.net>
To:	jens.axboe@...cle.com, akpm@...l.org
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	daniel_frazier@...com, andrew.patterson@...com
Subject: [PATCH 1/2] cciss: set default raid level when reading geometry fails

PATCH 1 of 2

This patch sets a default raid level on a volume that either does not support
reading the geometry or reports an invalid geometry for whatever reason. We
were always setting some values for heads and sectors but never set a raid
level. This caused lots of problems on some buggy firmware. Please consider
this for inclusion.

Thanks,
mikem

Signed-off-by: Mike Miller <mike.miller@...com>
--------------------------------------------------------------------------------

 drivers/block/cciss.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN drivers/block/cciss.c~cciss_set_default_raidlevel drivers/block/cciss.c
--- linux-2.6-work/drivers/block/cciss.c~cciss_set_default_raidlevel	2006-12-13 11:04:39.000000000 -0600
+++ linux-2.6-work-mikem/drivers/block/cciss.c	2006-12-13 11:05:06.000000000 -0600
@@ -1907,6 +1907,7 @@ static void cciss_geometry_inquiry(int c
 			       "does not support reading geometry\n");
 			drv->heads = 255;
 			drv->sectors = 32;	// Sectors per track
+			drv->raid_level = RAID_UNKNOWN;
 		} else {
 			drv->heads = inq_buff->data_byte[6];
 			drv->sectors = inq_buff->data_byte[7];
_
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