From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: Craig James <craig_james@emolecules.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Autodetect of software RAID1+0 fails
Date: Fri, 1 Jun 2007 23:35:01 +0200
Message-ID: <20070601213501.GA23940@uio.no> (raw)
In-Reply-To: <46605E24.7070508@emolecules.com>
References: <C3E62232E3BCF24CBA20D72BFDCB6BF804382037@MI8NYCMAIL08.Mi8.com>
<op.ts5b3kikcigqcu@apollo13>
<46605E24.7070508@emolecules.com>
On Fri, Jun 01, 2007 at 10:57:56AM -0700, Craig James wrote:
> The Linux kernel doesn't properly detect my software RAID1+0 when I boot
> up. It detects the two RAID1 arrays, the partitions of which are marked
> properly. But it can't find the RAID0 on top of that, because there's no
> corresponding device to auto-detect. The result is that it creates
> /dev/md0 and /dev/md1 and assembles the RAID1 devices on bootup, but
> /dev/md2 isn't created, so the RAID0 can't be assembled at boot time.
Either do your md discovery in userspace via mdadm (your distribution can
probably help you with this), or simply use the raid10 module instead of
building raid1+0 yourself.
/* Steinar */
--
Homepage: http://www.sesse.net/
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To: pgsql-performance@postgresql.org
Cc: sgunderson@bigfoot.com, craig_james@emolecules.com
Subject: Re: Autodetect of software RAID1+0 fails
In-Reply-To: <20070601213501.GA23940@uio.no>
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