From: Mike Doty <kingtaco@gentoo.org>
To: gentoo-amd64@lists.gentoo.org
Subject: Re: [gentoo-amd64] Re: SATA mdraid woes
Date: Thu, 28 Dec 2006 20:04:09 -0800 [thread overview]
Message-ID: <459493B9.2060200@gentoo.org> (raw)
In-Reply-To: <en19o9$kqk$1@sea.gmane.org>
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Duncan wrote:
> "Peter Humphrey" <prh@gotadsl.co.uk> posted
> 20061228180653.40B4A2B8ADF@smtp.nildram.co.uk, excerpted below, on Thu,
> 28 Dec 2006 18:06:48 +0000:
>
> [snipped]
>
>> md: linear personality registered for level -1
>> md: raid0 personality registered for level 0
>> md: raid1 personality registered for level 1
>> [so I've got mdraid compiled in]
>> ...
>> Activating mdev
>> Detected real_root as a md device. Setting up the device node
>> Determining root device...
>> Mounting root...
>> ...
>> The root block device is unspecified or not detected.
>> --
>> [end of transcript]
>> Then I'm invited to specify another device, or enter a shell. I use the
>> shell to say "ls -l /dev/md2", which shows the block device I expect to see,
>> but "cat /dev/md2" returns an empty result. If I do that from the
>> installation CD I get a dump of the contents of the md disk, so it seems
>> that the node exists but it isn't connected to the array /dev/md2.
>>
>> All I can think of is that I've made an error in creating the RAID-1 arrays,
>> but can anyone point me to what that might be?
>
> From what I've seen, there aren't a lot of folks on this list doing RAID,
> and some of the ones that are, are using the DM-RAID firmware-RAID stuff,
> rather than md-RAID.
damn ricers!
here are the 2 most commonly overlooked items: the sdXY partitions must
be type FD (linux raid) and you must use a persistent superblock.
- --
=======================================================
Mike Doty kingtaco -at- gentoo.org
Gentoo/AMD64 Strategic Lead
Gentoo Council
Gentoo Developer Relations
Gentoo Recruitment Lead
Gentoo Infrastructure
GPG: E1A5 1C9C 93FE F430 C1D6 F2AF 806B A2E4 19F4 AE05
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gentoo-amd64@gentoo.org mailing list
next prev parent reply other threads:[~2006-12-29 4:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-28 18:06 [gentoo-amd64] SATA mdraid woes Peter Humphrey
2006-12-28 18:17 ` Antoine Martin
2006-12-28 20:34 ` [gentoo-amd64] " Duncan
2006-12-29 4:04 ` Mike Doty [this message]
2006-12-28 22:11 ` [gentoo-amd64] " Boyd Stephen Smith Jr.
2006-12-29 22:48 ` Thomas Rösner
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