From: Ric Wheeler Subject: Re: large file system & high object count testing Date: Mon, 31 Aug 2009 18:20:46 -0400 Message-ID: <4A9C4CBE.7040701@redhat.com> References: <4A9BFB88.5030409@redhat.com> <4A9C0220.1040503@redhat.com> <20090831205608.GE4197@webber.adilger.int> <4A9C3A7B.3050302@redhat.com> <150c16850908311425vbc1c0a1if2a7d8ed56f650f5@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Andreas Dilger , linux-ext4@vger.kernel.org, "Ted Ts'o" To: Justin Maggard Return-path: Received: from mx1.redhat.com ([209.132.183.28]:15169 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751598AbZHaWUs (ORCPT ); Mon, 31 Aug 2009 18:20:48 -0400 In-Reply-To: <150c16850908311425vbc1c0a1if2a7d8ed56f650f5@mail.gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 08/31/2009 05:25 PM, Justin Maggard wrote: > On Aug 31, 2009 13:02 -0400, Ric Wheeler wrote: > >> Mount after fsck: >> Aug 31 12:27:12 megadeth kernel: EXT4-fs (dm-75): >> ext4_check_descriptors: Checksum for group 487 failed (59799!=46827) >> Aug 31 12:27:12 megadeth kernel: EXT4-fs (dm-75): group descriptors >> corrupted! >> > Ah, so it's not just me. It looks like you're seeing the exact same > thing I reported a few days ago in the ">16TB issues" thread. You > don't even have to do anything fancy to make this happen. My test > case involves simply creating 5 directories on the newly-created > 64-bit filesystem, and running e2fsck on it immediately after > unmounting to get the same results. > > -Justin > Much faster than my fill it over the week end test :-) ric