From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Clements Subject: Re: Any way to Increase MD_SB_DISKS=27 ? I need 31 devices Date: Mon, 02 May 2005 10:58:28 -0400 Message-ID: <42764014.5060909@steeleye.com> References: <427583FA.7030704@dtbb.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <427583FA.7030704@dtbb.net> Sender: linux-raid-owner@vger.kernel.org To: Tyler Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Tyler wrote: > PS - I've tryed the latest 2.6.12-rc3-mm2 kernel, with mdadm v2.0-devel, > using the --metadata 1.0 option on the create line, and still get: > # mdadm -C -e 1.0 -l 6 -n 31 /dev/md0 /dev/hdb /dev/hdc /dev/hdd > /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh > /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo /dev/sdp > /dev/sdq /dev/sdr /dev/sds /dev/sdt /dev/sdu /dev/sdv /dev/sdw /dev/sdx > /dev/sdy /dev/sdz /dev/sdaa /dev/sdab > mdadm: invalid number of raid devices: 31 As far as I can tell, mdadm just shouldn't give this error when you're using a version 1 superblock. If you disable that check in mdadm.c, I think everything will work. Version 1 superblocks allow something like 2000 disks in an array. -- Paul