Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759153AbXFQBrn (ORCPT ); Sat, 16 Jun 2007 21:47:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754311AbXFQBrg (ORCPT ); Sat, 16 Jun 2007 21:47:36 -0400 Received: from twinlark.arctic.org ([207.29.250.54]:33399 "EHLO twinlark.arctic.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753388AbXFQBrg (ORCPT ); Sat, 16 Jun 2007 21:47:36 -0400 Date: Sat, 16 Jun 2007 18:47:35 -0700 (PDT) From: dean gaudet To: Wakko Warner cc: Neil Brown , david@lang.hm, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Subject: Re: limits on raid In-Reply-To: <20070616140857.GA4206@animx.eu.org> Message-ID: References: <18034.479.256870.600360@notabene.brown> <18034.3676.477575.490448@notabene.brown> <20070616020320.GB2002@animx.eu.org> <18035.23867.576212.859440@notabene.brown> <20070616140857.GA4206@animx.eu.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 882 Lines: 19 On Sat, 16 Jun 2007, Wakko Warner wrote: > When I've had an unclean shutdown on one of my systems (10x 50gb raid5) it's > always slowed the system down when booting up. Quite significantly I must > say. I wait until I can login and change the rebuild max speed to slow it > down while I'm using it. But that is another thing. i use an external write-intent bitmap on a raid1 to avoid this... you could use internal bitmap but that slows down i/o too much for my tastes. i also use an external xfs journal for the same reason. 2 disk raid1 for root/journal/bitmap, N disk raid5 for bulk storage. no spindles in common. -dean - 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/