From: Neil Brown <neilb@suse.de>
To: Wolfgang Denk <wd@denx.de>
Cc: Mike Hartman <mike@hartmanipulation.com>, linux-raid@vger.kernel.org
Subject: Re: How to initialize "composite" RAID
Date: Sat, 11 Sep 2010 08:37:48 +1000 [thread overview]
Message-ID: <20100911083748.14843721@notabene> (raw)
In-Reply-To: <20100910222814.CB50615242D@gemini.denx.de>
On Sat, 11 Sep 2010 00:28:14 +0200
Wolfgang Denk <wd@denx.de> wrote:
> Dear Mike Hartman,
>
> In message <AANLkTim9TnyTGMWnRr65SrmJDrLN=Maua_QnVLLDerwS@mail.gmail.com> you wrote:
> > This is unrelated to my other RAID thread, but I discovered this issue
> > when I was forced to hard restart due to the other one.
> >
> > My main raid (md0) is a RAID 5 composite that looks like this:
> >
> > - partition on hard drive A (1.5TB)
> > - partition on hard drive B (1.5TB)
> > - partition on hard drive C (1.5TB)
> > - partition on RAID 1 (md1) (1.5TB)
>
> I guess this is a typo and you mean RAID 0 ?
>
> > md1 is a RAID 0 used to combine two 750GB drives I already had so that
>
> ...as used here?
>
> > Detecting md0. Can't start md0 because it's missing a component (md1)
> > and thus wouldn't be in a clean state.
> > Detecting md1. md1 started.
> > Then I use mdadm to stop md0 and restart it (mdadm --assemble md0),
> > which works fine at that point because md1 is up.
>
> Did you try changing your configurations uch that md0 is the RAID 0
> and md1 is the RAID 5 array?
>
Or just swap the order of the two lines in /etc/mdadm.conf.
NeilBrown
next prev parent reply other threads:[~2010-09-10 22:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-10 22:14 How to initialize "composite" RAID Mike Hartman
2010-09-10 22:28 ` Wolfgang Denk
2010-09-10 22:33 ` Mike Hartman
2010-09-10 22:37 ` Neil Brown [this message]
2010-09-10 22:45 ` Mike Hartman
2010-09-10 23:07 ` Neil Brown
2010-09-10 23:36 ` Mike Hartman
2010-09-11 0:23 ` Neil Brown
2010-09-11 2:30 ` Mike Hartman
2010-09-11 4:42 ` Neil Brown
2010-09-11 4:58 ` Mike Hartman
2010-09-11 5:09 ` Neil Brown
2010-09-11 5:15 ` Mike Hartman
2010-09-11 22:13 ` John Robinson
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