Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422685AbWJYXAS (ORCPT ); Wed, 25 Oct 2006 19:00:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161074AbWJYXAS (ORCPT ); Wed, 25 Oct 2006 19:00:18 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:46788 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1161067AbWJYXAR (ORCPT ); Wed, 25 Oct 2006 19:00:17 -0400 Subject: Re: megaraid_sas waiting for command and then offline From: Alan Cox To: "Brett G. Durrett" Cc: "David N. Welton" , linux-kernel@vger.kernel.org In-Reply-To: <453FE9C4.1090504@imvu.com> References: <453F2454.1000707@webster.it> <453FE9C4.1090504@imvu.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Thu, 26 Oct 2006 00:03:35 +0100 Message-Id: <1161817415.7615.37.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 850 Lines: 19 Ar Mer, 2006-10-25 am 15:48 -0700, ysgrifennodd Brett G. Durrett: > After I reported an additional failure, Sumant said they were able to > reproduce the problems with XFS but they have not seen it with EXT3. I've seen precisely that pattern with a couple of IDE controllers. In both cases they had problems with very large I/O requests. XFS was generating extremely long linear reads and writes while ext3 tended to generate nice I/O patterns but never really huge ones. (The IDE drivers in question have since been fixed except for IT821x where some firmware versions in raid mode still barf) Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/