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From: Bryan Henderson <hbryan@us.ibm.com>
To: David Miller <davem@davemloft.net>
Cc: btrfs-devel@oss.oracle.com, chris.mason@oracle.com,
	jengelh@computergmbh.de, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: BTRFS partition usage...
Date: Tue, 12 Feb 2008 17:25:32 -0800	[thread overview]
Message-ID: <OF91619394.99460343-ON882573EE.0006CBE5-882573EE.0007D541@us.ibm.com> (raw)
In-Reply-To: <20080212.152652.217936905.davem@davemloft.net>

> 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


  parent reply	other threads:[~2008-02-13  1:26 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-06 17:00 [ANNOUNCE] Btrfs v0.12 released Chris Mason
2008-02-11  1:12 ` David Miller
2008-02-11 13:42   ` Chris Mason
2008-02-12  6:43     ` David Miller
2008-02-12 13:43       ` Chris Mason
2008-02-12  7:21 ` BTRFS partition usage David Miller
2008-02-12  8:11   ` David Miller
2008-02-12 13:49     ` Chris Mason
2008-02-12 14:00       ` Jan Engelhardt
2008-02-12 14:08         ` Chris Mason
2008-02-12 14:21           ` Jan Engelhardt
2008-02-12 14:35             ` Chris Mason
2008-02-12 15:04               ` Jan Engelhardt
2008-02-12 16:17                 ` Chris Mason
2008-02-12 23:38                 ` David Miller
2008-02-12 23:42                   ` Jan Engelhardt
2008-02-13  1:09                     ` David Miller
2008-02-13  1:22                     ` Rene Herman
2008-02-12 23:35               ` David Miller
2008-02-13  7:02                 ` Christoph Hellwig
2008-02-12 23:34             ` David Miller
2008-02-12 23:33           ` David Miller
2008-02-13  2:10             ` Jeff Garzik
2008-02-14  0:51               ` Szabolcs Szakacsits
2008-02-12 23:26         ` David Miller
2008-02-12 23:39           ` Jan Engelhardt
2008-02-13  1:08             ` David Miller
2008-02-13  1:25           ` Bryan Henderson [this message]
2008-02-12 23:28         ` David Miller
2008-02-13  0:45           ` Theodore Tso
2008-02-12 20:50       ` David Miller
2008-02-12  9:23 ` CRC32C big endian bugs David Miller
2008-02-12 21:55 ` BTRFS only works with PAGE_SIZE <= 4K David Miller
2008-02-12 22:03   ` Chris Mason

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