From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Subject: Re: sata_mv, io stucks Date: Thu, 23 Oct 2008 12:07:11 -0400 Message-ID: <4900A12F.3030307@rtr.ca> References: <48F88449.1000704@ngs.ru> <49003B9C.1010303@ngs.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from rtr.ca ([76.10.145.34]:33404 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757142AbYJWQGi (ORCPT ); Thu, 23 Oct 2008 12:06:38 -0400 In-Reply-To: <49003B9C.1010303@ngs.ru> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Artem Bokhan Cc: linux-ide@vger.kernel.org Artem Bokhan wrote: > Any thought? >=20 > Artem Bokhan =D0=BF=D0=B8=D1=88=D0=B5=D1=82: >> I try to simulate random reads with "sysbench --test=3Dfileio=20 >> --num-threads=3D16 --max-requests=3D9999999 --max-time=3D60 --init-r= ng=3Don=20 >> --file-num=3D16 --file-fsync-freq=3D0 --file-test-mode=3Drndrd=20 >> --file-total-size=3D30G run" >> >> Two marvell controllers, 16 disks, software raid10, IO stucks on=20 >> different disks, kernel 2.6.26.5. >> With default ubuntu's 8.04 2.6.24 kernel the problem can not be repe= ated >> >> >> [ 289.851609] ata11.00: exception Emask 0x0 SAct 0x1 SErr 0x0 actio= n=20 >> 0x6 frozen >> [ 289.851695] ata11.00: cmd 61/08:00:60:1e:bf/00:00:01:00:00/40 tag= 0=20 >> ncq 4096 out >> [ 289.851697] res 40/00:00:00:00:00/00:00:00:00:00/00 Emas= k=20 >> 0x4 (timeout) >> [ 289.851774] ata11.00: status: { DRDY } >> [ 289.851834] ata11: hard resetting link >> [ 290.649259] ata11: SATA link up 3.0 Gbps (SStatus 123 SControl 30= 0) >> [ 290.749239] ata11.00: max_sectors limited to 256 for NCQ >> [ 290.809189] ata11.00: max_sectors limited to 256 for NCQ >> [ 290.809194] ata11.00: configured for UDMA/133 >> [ 290.809200] ata11: EH complete >> [ 290.809242] sd 10:0:0:0: [sdk] 1953525168 512-byte hardware secto= rs=20 >> (1000205 MB) >> [ 290.809258] sd 10:0:0:0: [sdk] Write Protect is off >> [ 290.809263] sd 10:0:0:0: [sdk] Mode Sense: 00 3a 00 00 >> [ 290.809286] sd 10:0:0:0: [sdk] Write cache: enabled, read cache:=20 >> enabled, doesn't support DPO or FUA =2E.. I've just returned here from a month holiday in Italy, and I'll have a look at this and other sata_mv issues next week or so. Cheers