From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Sandeen Subject: Re: ext4 > 16T woes Date: Fri, 25 May 2012 16:01:55 -0500 Message-ID: <4FBFF343.9000706@redhat.com> References: <4FBD3102.6050001@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: ext4 development Return-path: Received: from mx1.redhat.com ([209.132.183.28]:28306 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752766Ab2EYVB5 (ORCPT ); Fri, 25 May 2012 17:01:57 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q4PL1u0A004791 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 25 May 2012 17:01:57 -0400 Received: from liberator.sandeen.net (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q4PL1tPA004725 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Fri, 25 May 2012 17:01:56 -0400 In-Reply-To: <4FBD3102.6050001@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 5/23/12 1:48 PM, Eric Sandeen wrote: > I'll try to look into this but just wanted to put it out there. > > After creating a 32T fs and filling it with 1T preallocated files, > I get quite a lot of corruption; this wasn't really the test > I wanted to do, I wanted to then remove a file with mostly > high blocks, run fsstress, and test recovery :( FWIW I tracked this down to the rbtree bitmap backend and sent a patch, [PATCH] libext2fs: Fix rbtree backend for extent lengths greater than 2^32 -Eric > # uname -r > 3.4.0-rc4+ > # truncate --size 32t imagefile2 > # mkfs.ext4 -F imagefile2 > mke2fs 1.42.3 (14-May-2012) > ... > # mount -o loop imagefile2 /mnt/scratch > # for I in `seq 1 32`; do fallocate -l 1t /mnt/scratch/1tfile$I; done > # umount /mnt/scratch > # time e2fsck -fn imagefile2 > e2fsck 1.42.3 (14-May-2012) > > Free blocks count wrong for group #131072 (0, counted=32768). > Fix? no > > Free blocks count wrong for group #131073 (0, counted=32768). > Fix? no > > Free blocks count wrong for group #131074 (0, counted=4164). > Fix? no > > Free blocks count wrong (3, counted=4294967299). > Fix? no > > > imagefile2: ********** WARNING: Filesystem still has errors ********** > > imagefile2: 43/536870912 files (0.0% non-contiguous), 8589934589/8589934592 blocks > > real 27m40.133s > user 27m12.886s > sys 0m6.238s > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html