linux-kernel - Re: ZFS with Linux: An Open Plea

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Message-ID: <4622C851.2030509@redhat.com>
Date:	Sun, 15 Apr 2007 20:50:25 -0400
From:	Rik van Riel <riel@...hat.com>
To:	"David R. Litwin" <presently42@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: ZFS with Linux: An Open Plea

David R. Litwin wrote:

>> 4: ZFS has a HUGE capacity. I don't have 30 exobytes, but I might some
>> day....
> 
> ext4 will probably cope with that.  XFS definitely has very high
> limits though I admit I don't know what they are.
> 
> XFS is also a few exobytes.

The fsck for none of these filesystems will be able to deal with
a filesystem that big.  Unless, of course, you have a few weeks
to wait for fsck to complete.

Backup and restore are similar problems.  When part of the filesystem
is lost, you don't want to have to wait for a full restore.

Sounds simple?  Well, the hard part is figuring out exactly which
part of the filesystem you need to restore...

I don't see ZFS, ext4 or XFS addressing these issues.

IMHO chunkfs could provide a much more promising approach.

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.
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