Red hat linux server lost connectivity to the storage. Please suggest.

[Barry Brimer]

> One of our redhat server that was earlier zoned to EMC storage is not able
> to see any LUNs/Disks all of a sudden.
>
> We are not seeing any entries in /sys/class/fc_host.
>
> # ls -ld /sys/class/fc_host
> ls: /sys/class/fc_host: No such file or directory
>
>
> # more /etc/redhat-release
> Red Hat Enterprise Linux Server release 5.2 (Tikanga)
>
> # uname -r
> 2.6.18-128.4.1.el5

RHEL 5.2 is quite dated, you might consider moving to RHEL 5.7.  RHEL 5.8 
was just released.

> # lspci | grep -i fibre
> 04:00.0 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel
> Host Adapter (rev 02)
> 04:00.1 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel
> Host Adapter (rev 02)
> 05:00.0 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel
> Host Adapter (rev 02)
> 05:00.1 Fibre Channel: Emulex Corporation Zephyr-X LightPulse Fibre Channel
> Host Adapter (rev 02)
>
> Please suggest or point us in the right direction.

Are you loading lpfc?

What is the output of "lsmod | grep lpfc" ??

Barry