From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: BUG:write data to degrade raid5 Date: Sat, 20 Mar 2010 11:50:47 -0400 Message-ID: <4BA4EED7.5070700@tmr.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: jin zhencheng Cc: neilb@suse.de, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids jin zhencheng wrote: > 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 ? > I would usually say that any kernel OOPS is a bug, but in this case, what are you running your Linux on, given that you just trashed the first four drives? While it's possible to run off of other drives, you have to make an effort to configure Linux to do so. -- Bill Davidsen "We can't solve today's problems by using the same thinking we used in creating them." - Einstein