topic Re: HBA can't find SAN devices in Operating System - Linux

HBA can't find SAN devices

David Wall — Mon, 11 Sep 2006 13:52:40 GMT

I am having a problem finding SAN devices through the HBA. The OS is RHEL 4 AS.

I go into SANsurfer and there are no devices in the device list for the HBA. The SAN (eva5000) can see the Linux server.

The output from lssg only show the internal drives:

lssg
sg0 0,0,0,0 HP 300 G MAT3300NC HPC2
sg1 0,0,1,0l HP 300 G MAT3300NC HPC2

A system where I can see the devices shows:

lssg
sg0 0,0,0,0 HP 300 G MAT3300NC HPC2
sg1 0,0,1,0 HP 300 G MAT3300NC HPC2
sg2 2,0,0,0 COMPAQ HSV110 (C)COMPAQ 3028 5000-1fe1-5004-c1e8
sg3 2,0,0,1 COMPAQ HSV110 (C)COMPAQ 3028 5000-1fe1-5004-c1e8

LUN 1 is the disk.

I have rebuilt the RAM disk after the initial HBA configuration and still get the same error. I try to manually unload the drivers (/etc/init.d/qlremote stop, modprobe -r qla2300, modprobe -r qla2xxx, modprobe -r qla2xxx_conf) but it keeps complaing that qla2xxx is in use.

Any ideas would be appreciated.

Re: HBA can't find SAN devices

Kodjo Agbenu — Mon, 11 Sep 2006 15:17:00 GMT

Hi,

Try to compare the list of modules loaded on both servers (lsmod).

Good lcuk.
Kodjo

Re: HBA can't find SAN devices

Basheer_2 — Tue, 12 Sep 2006 11:30:27 GMT

David,

Try this
1) /opt/hp/hp_fibreutils/hp_rescan -a
2) lssd
3) lvmdiskscan
4) scsi_info /dev/sde
5) cat /proc/scsi/scsi

Re: HBA can't find SAN devices

David Wall — Thu, 14 Sep 2006 14:40:45 GMT

The problem turned out to be on the SAN administration side. The server was not in a zone (at least that's what the SAN admin tells me). The SAN administrator found and corrected the problem and an hp_rescan showed the disk.

Thanks for the replies.

David

Re: HBA can't find SAN devices

David Wall — Thu, 14 Sep 2006 14:41:54 GMT

See above reply