From: Phillip Susi <psusi@cfl.rr.com>
To: lrhorer@satx.rr.com
Cc: linux-raid@vger.kernel.org
Subject: Re: Nested RAID and booting
Date: Tue, 21 Jun 2011 10:28:17 -0400 [thread overview]
Message-ID: <4E00AA81.2030100@cfl.rr.com> (raw)
In-Reply-To: <D1.7A.00666.3AE0FED4@cdptpa-omtalb.mail.rr.com>
These days most ( all? ) distributions use udev for plug and play. When
the physical disks are detected, udev notices ( with blkid ) that they
are raid members, and runs mdadm --incremental on them. Once they are
all detected, the array goes active, and udev runs blkid on the array,
notices that is a component, and runs mdadm --incremental on that.
On 6/8/2011 1:54 AM, Leslie Rhorer wrote:
>
> For financial reasons, I have had to temporarily create two members
> of a RAID6 array by first creating a pair of RAID0 arrays from four member
> disks. The RAID6 array is currently re-shaping, and so far all seems well.
> I do have a concern about what will happen when the system reboots, however.
> In order to properly assemble the RAID6 array, the two RAID0 arrays will
> first need to be assembled and running, correct? How do I guarantee the two
> RAID0 arrays will be up before mdadm attempts to assemble the RAID6 array?
> Will simply putting them in the mdadm.conf file prior to the RAID6 array do
> the trick?
prev parent reply other threads:[~2011-06-21 14:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-08 5:54 Nested RAID and booting Leslie Rhorer
2011-06-08 7:27 ` Roman Mamedov
2011-06-21 14:28 ` Phillip Susi [this message]
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