Re: [Fwd: Re: Multipath problem [zero Block multipath device creation with mdadm 1.8.1]]

On Thu, Nov 25, 2004 at 03:18:40PM +0100, Oliver Heinz wrote:

As  the linux-raid list seems to have some problems at the moment, I 
take the chance to thank you personally an send you a copy of the reply 
I submitted some hours ago.

Thanks again + Bye,
Oliver

Date: Thu, 25 Nov 2004 10:43:53 +0100
From: Oliver Heinz <redacted>
User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.7.3) Gecko/20041007 Debian/1.7.3-5
CC:  linux-raid@vger.kernel.org
Subject: Re: Multipath problem [zero Block multipath device creation with
mdadm 1.8.1]
In-Reply-To: [ref]

Luca Berra schrieb:

quoted

On Tue, Nov 23, 2004 at 01:19:51PM +0100, Oliver Heinz wrote:

quoted

Mixing mdadm-1.6 and 1.8.1 for creating/managing the device doesn't 
work, it gives me an segfault.

try patching mdadm-1.8.1 with this patch, it might help with the
segfault.

This works! Thanks a lot!

great.

Now creating the md-device with versions prior 1.8.1 works (I tested 
1.60 and 1.8.0) - restarting the array with them fails.
With 1.8.1 (with patch applied) I get an 0 Block device created bit I 
can restart the (correct) device I created with 1.60.

1.8.1 changed the way devices get created, i did not have any chance to
test it with multipath yet.
see the changelog for more information.

Now of course it would be great to get the device created and restarted 
with the same utility. We'd like to use it in production environment 
here, can more experienced mdadm users recommend that, these problems  
did not really strengthen our confidence in mdadm (at least when it 
comes to multipath, we have (of course) been using mdadm successfully 
for raid on severall systems).

Are the code changes in 1.8.1 so drastic that you would recommend to 
stick with prior versions and fix the issue with starting the array or 

1.8.1 is considered a development version, not ready for production.

would you suggest to get 1.8.1 to get MD creation in 1.8.1 fixed (well 
it need's to be fixed anyway ;-).

it needs to be fixed.

L.

-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
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