From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Marcin M. Jessa" Subject: Re: How to stress test an RAID 6 array? Date: Mon, 03 Oct 2011 16:18:45 +0200 Message-ID: <4E89C445.1080406@yazzy.org> References: <4E89B81D.5000800@yazzy.org> <4E89BF73.8020604@yazzy.org> Reply-To: lists@yazzy.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: =?UTF-8?B?TWF0aGlhcyBCdXLDqW4=?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 10/3/11 4:03 PM, Mathias Bur=C3=A9n wrote: > On 3 October 2011 14:58, Marcin M. Jessa wrote: >> On 10/3/11 3:39 PM, Mathias Bur=C3=A9n wrote: >> >>> I would run badblocks on the md0 device. (increase number of blocks= to >>> check at a time until you use all your available RAM) >>> After that I'd run dd. >> >> Any particular options you would give to dd ? >> >>> I would also check the SMART data on all >>> drives >> >> What's strange SMART always says all the drives are healthy. >> All of failures started with dmesg saying: >> exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen >> ata9.00: failed command: FLUSH CACHE EXT >> ata9.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 >> res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) >> ata9.00: status: { DRDY } >> >> That "exception Emask" part pointed me to misc threads where people >> mentioned bugs in the Linux kernel. >> >> A reboot would somehow reset the drives and they would always be wor= king >> fine again and I could always resync the array until the next time w= hen a >> drive would get kicked off. >> >>> and the health of the controller. >> >> How can I run a check on that within Linux? >> >> >> >> -- >> >> Marcin M. Jessa >> > > Can you post the smartctl -a -T permissive (etc) output on a pastebin > somewhere, for all HDDs? http://pastebin.com/Tw1ha9hK > > What controller are you using? I believe it's a AMD=C2=AE SB850 chipset The drives are connected to the SATA3 ports on the motherboard. I'm not using the built in HW RAID. The motherboard: http://www.msi.com/product/mb/870A-G54.html --=20 Marcin M. Jessa -- 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