From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: [PATCH 003 of 3] md: Calculate correct array size for raid10 in new offset mode. Date: Tue, 16 May 2006 11:13:12 +1000 Message-ID: <1060516011312.2735@suse.de> References: <20060516111036.2649.patches@notabene> Return-path: Sender: linux-raid-owner@vger.kernel.org To: Andrew Morton Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids The size calculation made assumtion which the new offset mode didn't follow. This gets the size right in all cases. Signed-off-by: Neil Brown ### Diffstat output ./drivers/md/raid10.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff ./drivers/md/raid10.c~current~ ./drivers/md/raid10.c --- ./drivers/md/raid10.c~current~ 2006-05-16 11:09:25.000000000 +1000 +++ ./drivers/md/raid10.c 2006-05-16 11:09:42.000000000 +1000 @@ -2060,7 +2060,13 @@ static int run(mddev_t *mddev) /* * Ok, everything is just fine now */ - size = conf->stride * conf->raid_disks; + if (conf->far_offset) { + size = mddev->size >> (conf->chunk_shift-1); + size *= conf->raid_disks; + size <<= conf->chunk_shift; + sector_div(size, conf->far_copies); + } else + size = conf->stride * conf->raid_disks; sector_div(size, conf->near_copies); mddev->array_size = size/2; mddev->resync_max_sectors = size;