From: Lars Marowsky-Bree <lmb@suse.de>
To: Thomas Horsten <thomas@horsten.com>, linux-raid@vger.kernel.org
Subject: Re: Driver for BIOS-based software RAIDs
Date: Mon, 13 Oct 2003 21:03:23 +0200 [thread overview]
Message-ID: <20031013190323.GD23916@marowsky-bree.de> (raw)
In-Reply-To: <200310131921.45824.thomas@horsten.com>
On 2003-10-13T19:21:45,
Thomas Horsten <thomas@horsten.com> said:
> Now, the problem is that these BIOS based software RAID's all use whole disks
> as opposed to individual partitions like the Linux MD driver.
Why is that a problem? You can assemble a MD using whole disks instead
of partition. A block device is a block device is a block device.
> Another way of doing it would be to create a separate native MD RAID for each
> partition on the BIOS RAID, but this has the major drawback that the user
> wouldn't be able to repartition the device.
Use a volume manager (LVM1, LVM2, EVMS2 ...) on top of the md. Works
just fine.
> 1) User selects CONFIG_MD_FOREIGN_SUPERBLOCKS and CONFIG_MD_WHOLEDISK_RAID,
> along with one oif the BIOS specific drivers like CONFIG_MD_FOREIGN_MEDLEY.
> Each BIOS driver has its own superblock type.
Autodiscovery is a problem, but I'd prefer to do that in the initrd from
within userspace. That's much cleaner.
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering ever tried. ever failed. no matter.
SuSE Labs try again. fail again. fail better.
Research & Development, SUSE LINUX AG -- Samuel Beckett
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next prev parent reply other threads:[~2003-10-13 19:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-13 18:21 Driver for BIOS-based software RAIDs Thomas Horsten
2003-10-13 18:31 ` Kevin P. Fleming
2003-10-13 19:19 ` Thomas Horsten
2003-10-13 19:03 ` Lars Marowsky-Bree [this message]
2003-10-13 19:25 ` Thomas Horsten
2003-10-13 21:17 ` Lars Marowsky-Bree
2003-10-13 21:38 ` Thomas Horsten
2003-10-14 7:18 ` Lars Marowsky-Bree
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