From: Michal Soltys <soltys@ziu.info>
To: linux-raid@vger.kernel.org
Subject: Re: boot time autoassembly: how come it works?
Date: Thu, 05 Jun 2008 07:10:44 +0200 [thread overview]
Message-ID: <48477554.7090409@ziu.info> (raw)
In-Reply-To: <4847119C.3070002@jellybean.co.uk>
Jules Bean wrote:
> I'm trying to understand the boot sequence of new kernels (2.6.24,
> initramfs) better and I really don't understand how the RAID assembly
> works.
>
> The docs (md.txt) say that auto-assembly only occurs if the RAID arrays
> are marked as 'RAID autodetect' aka partition type 0xfd. On the other
> hand mdadm needs mdadm.conf to get going.
>
Initramfs is a tiny linux. It (usually) either has simple mdassamble or
mdassemble.auto, or full-blown mdadm - and when you use those, partition
type is ignored.
Partitions with 0xfd relate to [deprecated in times of early userpsace]
method of assembling the arrays by the kernel itself, before any
userspace code (initramfs/rd, your system) takes action.
prev parent reply other threads:[~2008-06-05 5:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-04 22:05 boot time autoassembly: how come it works? Jules Bean
2008-06-04 22:27 ` Bryan Mesich
2008-06-05 6:22 ` Jules Bean
2008-06-05 5:10 ` Michal Soltys [this message]
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