linux-kernel - Re: How to handle >16TB devices on 32 bit hosts ??

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Message-id: <20090718143219.GL4231@webber.adilger.int>
Date:	Sat, 18 Jul 2009 10:32:19 -0400
From:	Andreas Dilger <adilger@....com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Theodore Tso <tytso@....edu>,
	device-mapper development <dm-devel@...hat.com>,
	Neil Brown <neilb@...e.de>, linux-fsdevel@...r.kernel.org,
	linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: How to handle >16TB devices on 32 bit hosts ??

On Jul 18, 2009  16:21 +0200, Andi Kleen wrote:
> > We don't have to rewrite fsck; most of the framework for supporting an
> > run-length-conding for compressed bitmaps is already in patches that
> > add > 32-bit block numbers to e2fsprogs; we've just been more focused
> > on getting 64-bit block numbers support merged than implementing
> > compressed bitmaps, but it's only one file that would need to be
> > added, and we might be able to steal the compressed bitmap support
> > from xfsprogs --- which does this already.
> 
> There are regular reports of xfs_repair failing on 32bit,
> even on volumes far smaller than 16TB.

It's a good thing we have ext4 then :-).

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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