From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Heflin Subject: Re: Size limitation? Date: Fri, 01 Jan 2010 15:42:35 -0600 Message-ID: <4B3E6C4B.20604@gmail.com> References: <201001011457.24334.mmclagan@invlogic.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201001011457.24334.mmclagan@invlogic.com> Sender: linux-raid-owner@vger.kernel.org To: mmclagan+reply@invlogic.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Michael McLagan wrote: > Hello, > > I'm trying to set up a large array but isn't working. I tried > Googling size limits, etc and came up empty. > > The problem is that with 10 drives (300GB SCSI), the array is coming up > with 500GB of space?!? I did an experiment and when the array size > exceeds 2TB, it fails/wraps? > > Is there a solution (simple or otherwise) for this? The machine runs > 2.6.29.5 (anything later causes the machine to lock up :( ). I'm not > sure if mdadm or the kernel is the problem either. > > Any suggestions appreciated (please CC me on replies). > > Michael > > Just guessing it is a mdadm bug. I have a 32-bit 2.6.27.5 machine with mdadm 2.6.7 and mine is showing an array size of 4.5tb correctly, so 2.6.29 should be just fine. Check mdadm --version and see what version that you have of that, you might also mount up the array and do "cat /proc/mdstat" and see what size the kernel reports.