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Re: [Xen-users] XCP Booting from SAN

To: "John Madden" <jmadden@xxxxxxxxxxx>
Subject: Re: [Xen-users] XCP Booting from SAN
From: Thomas Pöhler <tp@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 12 Jul 2011 23:12:55 +0200
Cc: Martin Smith <u571kills@xxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Thread-topic: [Xen-users] XCP Booting from SAN
You could also try to login the target only once to temporarily "disable" 
multipathing and see if its booting fine. 

Am 12.07.2011 um 22:22 schrieb "John Madden" <jmadden@xxxxxxxxxxx>:

>> One last clarification. The servers still boot, they just take 30
>> minutes to do so. While they are trying to boot tons of /dev/sd* errors
>> scroll by on the screen. After the machine finishes booting the I/O
>> errors appear to stop.
> What model SAN is it?  I've seen this before and the fix is to install the 
> proper multipath driver (appropriate to your SAN) into your initrd.  The i/o 
> errors are coming from the inactive path on an active/passive array.  For 
> example, with our IBM DS-4800 array, we had to add the scsi_dh_rdac driver to 
> the initrd so it was available to the multipath stuff that was happening at 
> boot.
> John
> -- 
> John Madden
> Sr UNIX Systems Engineer / Office of Technology
> Ivy Tech Community College of Indiana
> jmadden@xxxxxxxxxxx
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