[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <47B2517E.3080606@garzik.org>
Date: Tue, 12 Feb 2008 21:10:06 -0500
From: Jeff Garzik <jeff@...zik.org>
To: David Miller <davem@...emloft.net>
CC: chris.mason@...cle.com, jengelh@...putergmbh.de,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
btrfs-devel@....oracle.com
Subject: Re: BTRFS partition usage...
David Miller wrote:
> From: Chris Mason <chris.mason@...cle.com>
> Date: Tue, 12 Feb 2008 09:08:59 -0500
>
>> I've had requests to move the super down to 64k to make room for
>> bootloaders, which may not matter for sparc, but I don't really plan
>> on different locations for different arches.
>
> The Sun disk label sits in the first 512 bytes and the boot loader
> block sits in the second 512 bytes.
>
> I think leaving even more space is a good idea for several reasons.
Yep. I chose 32K unused space in the prototype filesystem I wrote [1,
2.4 era]. I'm pretty sure I got that number from some other filesystem,
maybe even some NTFS incarnation. It's just good practice to avoid the
first and last "chunks" of a partition, FSVO chunk.
Jeff
[1] http://kernel.org/pub/linux/kernel/people/jgarzik/ibu/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists