Qlogic FC mpp connection
Having some fun and games trying to get an IBM SLES10sp2 box seeing a SAN via a Qlogic FC using multipathing.
The card is a qla2342, although the firmware upgrade saw it as a qla2242.
I built the server with the SAN connected via the FC, and at the point of the install where I partition the disks it sees the SAN. I partition the local drives for boot, root etc and partition the SAN as ext3 space.
When I reboot, the boot procedure basically hangs (or takes an inordinately long time - at least an hour before I cancel it) due to the mpp rdac modules not being installed, I see constantly scrolling disk errors referring to the SAN. I've seen this before on other hardware and sorted it out by installing the mpp drivers.
So I shutdown, disconnect the SAN, reboot(as this is the only way the box boots in a reasonable time) and install the latest IBM rdac modules. They install fine, report seeing 2 qla2xxx ports and typing lsmod reports both the mpp and qla modules loaded.
I add the appropriate mpp option into the menu.lst, shutdown, reconnect the SAN and reboot. This time I see a few "unconfigured device" messages referring the the SAN and the box boots in quick time. However if I type multipath -l , or look in Partitioner I don't see the SAN device.
I have followed what I believe are the relevant tips, disabling failover and the card level, ensuring the multipath system modules start on boot and scanning the SCSI bus for a new device but I cannot get to the point where I can partition it.
Is there a problem with using qla2xxx cards with mpp on SLES10sp2? Is there something else I should be trying?
The only thing I haven't tried is clearing out the mpp config and letting the box boot fully with the SAN attached as it was taking way too long. should I let it do this before installing an mpp config?
Thanks
Dean
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