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From: David Miller <davem@davemloft.net>
To: jengelh@computergmbh.de
Cc: chris.mason@oracle.com, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, btrfs-devel@oss.oracle.com
Subject: Re: BTRFS partition usage...
Date: Tue, 12 Feb 2008 17:08:03 -0800 (PST)	[thread overview]
Message-ID: <20080212.170803.205678080.davem@davemloft.net> (raw)
In-Reply-To: <Pine.LNX.4.64.0802130032190.14275@fbirervta.pbzchgretzou.qr>

From: Jan Engelhardt <jengelh@computergmbh.de>
Date: Wed, 13 Feb 2008 00:39:16 +0100 (CET)

> On the other hand, the H and S of CHS could be lowered and S increased,
> e.g. divide H by 2, divide S by 2, multiply S by 4. This gives a finer
> bytes/cylinder granularity.

That's really not an option when you only have 16-bits in the disk
label for some of these values, which is the case for Sun disk
labels and some others (f.e. BSD).

Jan, please get past this, it's a real issue and we therefore have to
skip the initial 1K or so in order to provide something even
approaching sane.

No modern filesystem should put it's superblock at position zero.


  reply	other threads:[~2008-02-13  1:07 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 [this message]
2008-02-13  1:25           ` Bryan Henderson
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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