linux-ext4 - Re: fsck.ext4 taking a very long time because of "should not have EOFBLOCKS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAFj9jjzE_hW9sx3qAWrF+L9rufLL9rVZe_17Tqnk0WLgEiw_=Q@mail.gmail.com>
Date:	Thu, 20 Oct 2011 12:58:52 +0200
From:	Johannes Segitz <johannes.segitz@...il.com>
To:	linux-ext4@...r.kernel.org
Subject: Re: fsck.ext4 taking a very long time because of "should not have
 EOFBLOCKS_FL set"

On Wed, Oct 19, 2011 at 20:53, Ted Ts'o <tytso@....edu> wrote:
> On Wed, Oct 19, 2011 at 06:02:12PM +0200, Johannes Segitz wrote:
> What kernel version are you using, and can you upgrade to one that has
> this bug fixed?  This is a problem which was fixed over a year ago...

2.6.38-11-generic #50-Ubuntu SMP

I was running 3.0.4 until a few days ago.

I didn't fsck the filesystem for quite a while and the files on this
volume don't get
rewritten so it doesn't fix itself so i think it's just something that
was caused some
time ago and still persists

> What version of e2fsprogs are you using?

1.41.14-1ubuntu3 which seems to be the newest version

>    As an example use case, suppose a distribution had widely deployed a
>    version of the kernel where under some circumstances, the EOFBLOCKS_FL
>    flag would be left set even though it should not be left set, and a
>    customer had a workload which exercised the fencepost error all the
>    time, resulting in many large number of inodes that had EOFBLOCKS_FL
>    set erroneously.

yeah "suppose" ;)

>    Leaving EOFBLOCKS_FL set when it should not be isn't a huge deal, and
>    is certainly than having high availability timeout alerts going off
>    left and right.  So in this case, the best fix might be to put the
>    following in /etc/e2fsck.conf:
>
>    [problems]
>    0x010060 = {                        # PR_1_EOFBLOCKS_FL_SET
>         force_no = true
>         no_ok = true
>         no_nomsg = true
>    }

That was pretty much what i was looking for, thank you. I'll kill fsck
tonight if it's still
running and run it again with those settings.

Thank you for your help
Johannes
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html