From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Dilger Subject: Re: How to handle >16TB devices on 32 bit hosts ?? Date: Sat, 18 Jul 2009 10:32:19 -0400 Message-ID: <20090718143219.GL4231@webber.adilger.int> References: <19041.4714.686158.130252@notabene.brown> <20090718043155.GI4231@webber.adilger.int> <871voewm6y.fsf@basil.nowhere.org> <20090718065213.GK4231@webber.adilger.int> <20090718074811.GA2682@basil.fritz.box> <20090718134946.GA25546@mit.edu> <20090718142156.GC2682@basil.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; CHARSET=US-ASCII Content-Transfer-Encoding: 7BIT Cc: Theodore Tso , device-mapper development , Neil Brown , linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org To: Andi Kleen Return-path: Received: from sca-es-mail-1.Sun.COM ([192.18.43.132]:63899 "EHLO sca-es-mail-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751874AbZGROdh (ORCPT ); Sat, 18 Jul 2009 10:33:37 -0400 Content-disposition: inline In-reply-to: <20090718142156.GC2682@basil.fritz.box> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Jul 18, 2009 16:21 +0200, Andi Kleen wrote: > > We don't have to rewrite fsck; most of the framework for supporting an > > run-length-conding for compressed bitmaps is already in patches that > > add > 32-bit block numbers to e2fsprogs; we've just been more focused > > on getting 64-bit block numbers support merged than implementing > > compressed bitmaps, but it's only one file that would need to be > > added, and we might be able to steal the compressed bitmap support > > from xfsprogs --- which does this already. > > There are regular reports of xfs_repair failing on 32bit, > even on volumes far smaller than 16TB. It's a good thing we have ext4 then :-). Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.