[Discuss] Fibre Channel and CentOS 5 issues

[Tony Koker]

Jason,

   It sounds like a config/driver issue. If there was an arbitrated loop or
hardware issue you would most likely not see LUNs at all.
   Not any experience with CentOS, but this seems like issues we've had
with Linux (RHEL and Solaris, even Windows) before.
   Also haven't used Brocade HBA, but Emulex and QLogic. Still seems like
config/driver though.

with gratitude and in service,
Tony Koker
~~~~~


On Tue, Mar 6, 2012 at 1:19 PM, Jason Normand <jay at lentecs.com> wrote:

> We are working on setting up some new hardware for our db servers, but I am
> having trouble getting the Fibre Channel LUN recognized by CentOS 5.7.  We
> are running on an IBM x3550 with dual Brocade HBAs, and have them connected
> to an IBM DS3524 with dual controllers.  Each controller is direct attached
> to one HBA.  I am able to get Cent to see the LUN if i power cycle the
> controllers, however it will not see it after a system reboot.  The HBAs
> are recognized after reboot but rescanning the scsi bus does not help.
>  Only a power cycle on the controllers or a reset of the LUN will get Cent
> to recognize it.
>
> Now I have little experience with Fibre Channel and was looking for some
> pointers in the right direction.  Does this sound like a hardware issue or
> a Cent config/driver issue?
>
> Thanks
> Jason
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