linux-kernel - Re: 2.6.28.7/ext2/e2fsprogs-1.41.3: apparently irreparable filesystem damage, filesystem not imageable

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Message-ID: <87hc1zps3b.fsf@hades.wkstn.nix>
Date:	Wed, 11 Mar 2009 23:17:28 +0000
From:	Nix <nix@...eri.org.uk>
To:	François Cami <francois.cami@...e.fr>
Cc:	linux-kernel@...r.kernel.org,
	"Theodore Y. Ts'o" <theotso@...ibm.com>,
	Martin Watson <mjwatsonuk@...oo.co.uk>
Subject: Re: 2.6.28.7/ext2/e2fsprogs-1.41.3: apparently irreparable filesystem damage, filesystem not imageable

On 11 Mar 2009, François Cami told this:

> On Wed, 11 Mar 2009 21:52:15 +0000
> Nix <nix@...eri.org.uk> wrote:
>> What on earth is going on?
>
> AFAIK you are hitting the 16GB file size limit of a 1KB-block formatted
> ext{2,3} filesystem on /mnt/horizon/ .

Aha. I'd quite forgotten about that limit (normally I could go years
without writing files that large).

But 1Kb blocks? why the hell does it have 1Kb blocks, grumble grumble,
what idiot did that, this fs isn't a news spool (it was probably me in
the days before I realised what a performance hit non-page-sized blocks
incur).

... that's a bit annoying. Time to resize it down and make a new LV that
I can fit a copy of the errored fs onto (not that this will help until I
can make fsck work, but at least I can experiment with less worry).

So. No kernel bug, just a documented limit and extreme fsck
strangeness...
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