From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: RAID halting Date: Wed, 08 Apr 2009 09:45:37 +0100 Message-ID: <49DC6431.2020404@anonymous.org.uk> References: <20090407174723.LMYU4586.cdptpa-omta02.mail.rr.com@Leslie> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090407174723.LMYU4586.cdptpa-omta02.mail.rr.com@Leslie> Sender: linux-raid-owner@vger.kernel.org To: lrhorer@satx.rr.com Cc: 'Linux RAID' List-Id: linux-raid.ids On 07/04/2009 18:47, Leslie Rhorer wrote: > [...] What puzzles me > (among other things) is why do 5 of the drives show zero reads while 5 of > them show very low levels of read activity, and always the same 5 drives? Can you identify how these drives are connected? If I recall correctly, you're using port multipliers (because you have to); is there anything like a pattern between the activity of drives and the PMPs or PMP channels they're connected to? To borrow your expression, PMPs have left me with a bad taste in my mouth. Actually ReiserFS has too, though that was much longer ago. Anyway, apologies for my last mini-flame (is that a smoulder?), and best of luck getting to the cause of your problem. Cheers, John.