From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Spannbauer Subject: Raid1: sdb has a lot mor work then sda Date: Tue, 24 Apr 2012 16:46:33 +0200 Message-ID: <4F96BCC9.9080003@marco.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hello, at the moment I'm trying to find a bottleneck on my lamp-server with opensuse 11.4 (Kernel 2.6.37.6) Sometimes the system has a very poor performance because of a high io-w= ait. If I watch the systems disk-access with "atop -dD" I can see that sda i= s the most of the time at a load of 10%, sdb sometimes is at 100% or higher at the same time. In my opinion in a Raid1-System both disk should have nearly the same l= oad. Or may I wrong whis this? Both harddisks where changed 3 Weeks ago, /proc/mdstat shows that the rebuild was successfull and the array is functional. Today I've changed th SATA-Cable and the Port on the Maindboard of sdb, but the behaviour is still the same. Both disks passed the extended smart-self-test. Any ideas about that? Regards Daniel --=20 Daniel Spannbauer Software Entwicklung marco Systemanalyse und Entwicklung GmbH Tel +49 8333 9233-27 Fax -1= 1 Rechbergstr. 4 - 6, D 87727 Babenhausen Mobil +49 171 4033220 http://www.marco.de/ Email ds@marco.de Gesch=C3=A4ftsf=C3=BChrer Martin Reuter HRB 171775 Amtsgeri= cht M=C3=BCnchen -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html