From: Theodore Ts'o Subject: Problem with online resizing with metadata checksum patch... Date: Mon, 17 Sep 2012 13:06:31 -0400 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8BIT Cc: linux-ext4@vger.kernel.org To: "Darrick J. Wong" Return-path: Received: from li9-11.members.linode.com ([67.18.176.11]:51140 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932130Ab2IQRGp convert rfc822-to-8bit (ORCPT ); Mon, 17 Sep 2012 13:06:45 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi Darrick, I don't know if you have any time to look at this, but if you do, that would be great. I was testing online resizing with the metadata_csum feature, and found that we're seeing a certain small amount of corrupted group descriptor checksums. This doesn't occur with the standard original uninit_bg/csum_gdt feature. This test below was done with the latest e2fsprogs next branch, as well as the ext4 dev branch. I've also done a test with the ext4 origin branch, which is ext4 with all of the patches that have gone upstream to Linus's branch. The result was slightly different, but I saw the same pattern of block group descriptor checksum failures and inode bitmap corruption. If you could take a look at it, I'd really appreciate it!!! - Ted # mke2fs -t ext4 -O metadata_csum /dev/vdc 8M # mount /dev/vdc /vdc # resize2fs /dev/vdc 1024M # umount /dev/vdc # e2fsck -fy /dev/vdc e2fsck 1.43-WIP (31-Aug-2012) One or more block group descriptor checksums are invalid. Fix? yes Group descriptor 31 checksum is 0xadcb, should be 0x9352. FIXED. Group descriptor 63 checksum is 0xefc4, should be 0xf0db. FIXED. Group descriptor 95 checksum is 0xa02c, should be 0x1d6b. FIXED. Group descriptor 127 checksum is 0x4e35, should be 0xdf4a. FIXED. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Block bitmap differences: -262144 Fix? yes Inode bitmap differences: -(63510--63512) -63525 -(63542--63544) -63558 -(63574--63576) -(63590--63597) -63599 -63614 -63633 -(63681--63682) -63684 -(63686--63690) -63695 -63726 -(63731--63733) -63738 -63740 -63743 -63937 -(63941--63943) -63945 -63948 -63952 -64001 -(64022--64024) -64033 -64037 -(64054--64056) -64070 -64074 -(64086--64088) -64112 -64126 -(64145--64146) -64238 -(64241--64242) -64244 -(64246--64252) -64254 -64256 -64514 -(64534--64536) -64546 -64549 -(64566--64568) -64582 -64587 -(64598--64600) -64624 -64638 -(64657--64658) -64750 -(64753--64755) -(64758--64759) -(64761--64762) -(64764--64768) -(65025--65026) -(65046--65048) -(65057--65058) -65061 -(65078--65080) -65094 -(65098--65099) -(65110--65112) -65136 -65150 -(65169--65170) -65262 -(65267--65268) -65271 -65273 -65275 -(65278--65280) -(129046--129048) -129061 -(129078--129080) -129094 -(129110--129112) -(129126--129133) -129135 -129150 -129169 -(129217--129218) -129220 -(129222--129226) -129231 -129262 -(129267--129269) -129274 -129276 -129279 -129473 -(129477--129479) -129481 -129484 -129488 -129537 -(129558--129560) -129569 -129573 -(129590--129592) -129606 -129610 -(129622--129624) -129648 -129662 -(129681--129682) -129774 -(129777--129778) -129780 -(129782--129788) -129790 -129792 -130050 -(130070--130072) -130082 -130085 -(130102--130104) -130118 -130123 -(130134--130136) -130160 -130174 -(130193--130194) -130286 -(130289--130291) -(130294--130295) -(130297--130298) -(130300--130304) -(130561--130562) -(130582--130584) -(130593--130594) -130597 -(130614--130616) -130630 -(130634--130635) -(13064 6--130648) -130672 -130686 -(130705--130706) -130798 -(130803--130804) -130807 -130809 -130811 -(130814--130816) -(194582--194584) -194597 -(194614--194616) -194630 -(194646--194648) -(194662--194669) -194671 -194686 -194705 -(194753--194754) -194756 -(194758--194762) -194767 -194798 -(194803--194805) -194810 -194812 -194815 -195009 -(195013--195015) -195017 -195020 -195024 -195073 -(195094--195096) -195105 -195109 -(195126--195128) -195142 -195146 -(195158--195160) -195184 -195198 -(195217--195218) -195310 -(195313--195314) -195316 -(195318--195324) -195326 -195328 -195586 -(195606--195608) -195618 -195621 -(195638--195640) -195654 -195659 -(195670--195672) -195696 -195710 -(195729--195730) -195822 -(195825--195827) -(195830--195831) -(195833--195834) -(195836--195840) -(196097--196098) -(196118--196120) -(196129--196130) -196133 -(196150--196152) -196166 -(196170--196171) -(196182--196184) -196208 -196222 -(196241--196242) -196334 -(196339--196340) -196343 -196345 -196347 -(196350--196352) -(260118--260120) -260133 -(260150--260152) -260166 -(260182--260184) -(260198--260205) -260207 -260222 -260241 -(260289--260290) -260292 -(260294--260298) -260303 -260334 -(260339--260341) -260346 -260348 -260351 -260545 -(260549--260551) -260553 -260556 -260560 -260609 -(260630--260632) -260641 -260645 -(260662--260664) -260678 -260682 -(260694--260696) -260720 -260734 -(260753--260754) -260846 -(260849--260850) -260852 -(260854--260860) -260862 -260864 -261122 -(261142--261144) -261154 -261157 -(261174--261176) -261190 -261195 -(261206--261208) -261232 -261246 -(261265--261266) - 261358 -(261361--261363) -(261366--261367) -(261369--261370) -(261372--261376) -(261633--261634) -(261654--261656) -(261665--261666) -261669 -(261686--261688) -261702 -(261706--261707) -(261718--261720) -261744 -261758 -(261777--261778) -261870 -(261875--261876) -261879 -261881 -261883 -(261886--261888) Fix? yes /dev/vdc: ***** FILE SYSTEM WAS MODIFIED ***** /dev/vdc: 11/262144 files (9.1% non-contiguous), 34426/1048576 blocks candygram:~#