From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Sandeen Subject: ext4 > 16T woes Date: Wed, 23 May 2012 13:48:34 -0500 Message-ID: <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]:10071 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932817Ab2EWSsf (ORCPT ); Wed, 23 May 2012 14:48:35 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q4NImZTm001582 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 23 May 2012 14:48:35 -0400 Received: from liberator.sandeen.net (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q4NImYnk016738 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 23 May 2012 14:48:35 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: 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 :( # 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