From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Roberts Subject: RE: mdadm crashing server? Date: Mon, 28 Apr 2008 11:50:53 +0100 (BST) Message-ID: References: <00c801c8a8e8$a1dc5670$0405a8c0@hp>, <23803AB141208D42AD050BF05F9EFB6A31EE160DCE@londondc02.an0key.net> Reply-To: Keith Roberts Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Return-path: In-Reply-To: <23803AB141208D42AD050BF05F9EFB6A31EE160DCE@londondc02.an0key.net> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Mon, 28 Apr 2008, Luke Sheldrick wrote: > To: "linux-raid@vger.kernel.org" > From: Luke Sheldrick > Subject: RE: mdadm crashing server? > > >> From the Linux software raid howto: It is not recommended to >> run the same RAID1 array on the same IDE cable as >> master/slave. In fact the howto recommends 1 drive set as >> master on one cable only. One reason being if your master >> drive goes down, then the slave may not operate correctly. > > > I was think it probably wasn't a good idea. > > I changed over one of the disc's from the array, to sit on > the secondary IDE. It seems to now die at 1% and reset the > sync (not killing the machine this time however) *snip* > hex): Apr 28 09:27:09 nas kernel: 72 03 11 04 00 00 00 0c > 00 0a 80 00 00 00 00 00 Apr 28 09:27:09 nas kernel: 00 94 > 61 80 Apr 28 09:27:09 nas kernel: sd 3:0:1:0: [sdf] Add. > Sense: Unrecovered read error - auto reallocate failed Apr > 28 09:27:09 nas kernel: end_request: I/O error, dev sdf, > sector 9724288 Apr 28 09:27:09 nas kernel: ata4: EH > complete Apr 28 09:27:09 nas kernel: raid1: sdf: > unrecoverable I/O read error for block 9722240 Apr 28 Maybe you need to run smartmontools on the disk. I think auto reallocate failure is a smart disk attribute. Also the disks seem to be running at different DMA speeds. Do they need setting to the same speeds or not? Kind Regards Keith Roberts ----------------------------------------------------------------- Websites: http://www.php-debuggers.net http://www.karsites.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------