Re: [Xen-users] XCP Booting from SAN

[Martin Smith <u571kills@xxxxxxxxx>]

Thomas: Yes, if I disable the other three paths the servers boot quickly.

John: Its a SUN FLX380 storage array. Would I be looking for the drivers for the fibre card I installed or for the SAN?

On Tue, Jul 12, 2011 at 4:12 PM, Thomas Pöhler <tp@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

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
>

> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

--
Martin Smith
Phone: 612-208-2313

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users