topic Re: RHEL qlogic failover problem in Operating System - Linux

RHEL qlogic failover problem

djdb — Wed, 14 Feb 2007 09:38:30 GMT

Hi everyone!

I have HP BL20p G3 server with no direct attached hard drives and with attached storage HP EVA8000 through 2-port qlogic HBAs (qlogic 2312). SAN configuration is in attached image.

http://img165.imageshack.us/img165/9819/evaky3.jpg

I have try to install RHEL 4 AS update 4. When I starts "Disk Druid" (text mode) i've seen 8 mirrored partitions: sda, sdb, sdc, sdd, sde, sdf, sdg, sdh instead of single sda.

I have try to install to sda. After installation complete and before reboot i have made next steps:
go to the second sonsole
# chroot /mnt/sysimage
setup eth0, adding default route and config resolv.conf
# cd /root
# wget http://.../hp_qla2x00-2006-10-11.tar.gz
# tar -xzvf hp_qla2x00-2006-10-11.tar.gz
# cd hp_qla2x00-2006-10-11.tar.gz
# ./set_parms2.26 to "EVA/XP/MSA failover" (as i understand - it creates /etc/hp_qla2x00.conf)
# ./INSTALL (it compiles driver, makes initrd and patch /etc/modprobe.conf) for my 2.6.9-42.EL kernel
then i do it manually for my 2.6.9-42.ELsmp kernerl
# cd /opt/hp/src/hp_qla2x00src
# ./build_driver.rh -m 2.6.9-42.ELsmp
# ./make_initrd 2.6.9-42.ELsmp

and then reboot

...

after reboot a have only seen "Attemting Boot From Hard Drive (c:)" :(

Many advise on this forum tolds to disconnet redundand paths from server with aim to make one single SAN connection from EVA to HBA, but i can't do this on production SAN.

Can anybody helps me to resolve problem?

Re: RHEL qlogic failover problem

Ulf Zimmermann — Wed, 14 Feb 2007 20:09:16 GMT

During the BIOS do you see the qlogic firmware detecting your LUN on the SAN? Is the firmware set to enable?

Re: RHEL qlogic failover problem

Andrew Cowan — Thu, 15 Feb 2007 02:56:44 GMT

Are your SAN people using LUN masking, if so are you SURE that they have plugged you into the right switch and have enabled both your World Wide Names?

Re: RHEL qlogic failover problem

djdb — Thu, 15 Feb 2007 04:20:59 GMT

2 Ulf Zimmermann:
Yes I do. It works fine and install CD can find partitions, but duplicates (sda, sdb, sdc... , sdh)

2 Andrew Cowan:
LUN maskink isn't using.

...
Also, i have olready made Debian i386 (testing cd) installation on this system (also download firmware and drivers after installation complete and before reboot, made mkinitrd with hooks ... etc.), and I hasn't problems with boot.

I think my problem in GRUB. It isn't property installed, and as a result - system can't find executive data in MBR on /dev/sda. May be I mistake.

Re: RHEL qlogic failover problem

Andrew Cowan — Thu, 15 Feb 2007 05:42:08 GMT

Then mkinitrd is the answer

Re: RHEL qlogic failover problem

djdb — Thu, 15 Feb 2007 06:01:29 GMT

As I wrote before, I have made ./build_driver.rh and ./make_initrd

for each 2.6.9-42.EL and 2.6.9-42.ELsmp kernels and has no result.