From: NeilBrown <neilb@suse.de>
To: "Dorau, Lukasz" <lukasz.dorau@intel.com>
Cc: Francis Moreau <francis.moro@gmail.com>,
"Williams, Dan J" <dan.j.williams@intel.com>,
linux-raid <linux-raid@vger.kernel.org>
Subject: Re: ISW fakeraid: fail to add back a disk previously removed
Date: Sat, 9 Nov 2013 08:16:23 +1100 [thread overview]
Message-ID: <20131109081623.25c6bfc4@notabene.brown> (raw)
In-Reply-To: <D9FFE20C522965449E182ACE73889AEB1A67FFF9@IRSMSX105.ger.corp.intel.com>
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On Fri, 8 Nov 2013 14:33:24 +0000 "Dorau, Lukasz" <lukasz.dorau@intel.com>
wrote:
> On Friday, November 08, 2013 2:46 PM Francis Moreau <francis.moro@gmail.com> wrote:
> > > If you created a RAID array with mdadm, it would work correctly - recovery would
> > > start.
> >
> > Nope, I've got an identical behaviour if the array is created by mdadm (v3.3).
> >
>
> I have checked it twice with Fedora 19 and mdadm v3.3 and it works.
> What OS are you running?
>
> > As you can see, I'm confused about ISW vs IMSM.
> >
> > Are those 2 formats the same thing ?
> >
>
> ISW is a name of Intel metadata used by dmraid and IMSM is a name of Intel metadata used by mdadm, but ISW in dmraid has not been supported and developed for a couple of years, so ISW might be called an old version of IMSM.
>
> Lukasz
Unless we identify something in the metadata the dmraid writes which clearly
contravene the specification, we must assume there is a bug in mdadm. I
haven't had a change to look at this properly yet but I hope to next week.
NeilBrown
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next prev parent reply other threads:[~2013-11-08 21:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-23 9:24 ISW fakeraid: fail to add back a disk previously removed Francis Moreau
2013-10-28 6:18 ` Francis Moreau
2013-11-06 9:06 ` Francis Moreau
2013-11-06 14:08 ` Dorau, Lukasz
2013-11-08 13:45 ` Francis Moreau
2013-11-08 14:33 ` Dorau, Lukasz
2013-11-08 21:16 ` NeilBrown [this message]
2013-11-08 22:02 ` Dan Williams
2013-11-10 7:36 ` Francis Moreau
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