linux-kernel - Re: BTRFS partition usage...

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Message-ID: <OF91619394.99460343-ON882573EE.0006CBE5-882573EE.0007D541@us.ibm.com>
Date:	Tue, 12 Feb 2008 17:25:32 -0800
From:	Bryan Henderson <hbryan@...ibm.com>
To:	David Miller <davem@...emloft.net>
Cc:	btrfs-devel@....oracle.com, chris.mason@...cle.com,
	jengelh@...putergmbh.de, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: BTRFS partition usage...

> The Sun disk label only allows you to specify the start of a partition
> in cylinders, so if you want to use a filesystem like XFS you have to
> start the partition on cylinder 1 which can be many blocks into the
> disk.  That entire first cylinder is completely wasted.

I don't believe a cylinder of wasted disk space is significant.  I don't 
believe a cylinder of disk is worth adding the complexity of sharing a 
partition to a filesystem.  That complexity translates into engineering 
time and mistakes.

Your other arguments for making a hole in the filesystem, based on 
tradition, are more convincing.

--
Bryan Henderson                     IBM Almaden Research Center
San Jose CA                         Filesystems

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