From mboxrd@z Thu Jan 1 00:00:00 1970 From: jin zhencheng Subject: BUG:write data to degrade raid5 Date: Fri, 19 Mar 2010 18:29:28 +0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Sender: linux-kernel-owner@vger.kernel.org To: neilb@suse.de, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids hi; i use kernel is 2.6.26.2 what i do as follow: 1, I create a raid5: mdadm -C /dev/md5 -l 5 -n 4 /dev/sda /dev/sdb /dev/sdc /dev/sdd --metadata=1.0 --assume-clean 2, dd if=/dev/zero of=/dev/md5 bs=1M & write data to this raid5 3, mdadm --manage /dev/md5 -f /dev/sda 4 mdadm --manage /dev/md5 -f /dev/sdb if i faild 2 disks ,then the OS kernel display OOP error and kernel down do somebody know why ? Is MD/RAID5 bug ?