topic Re: storage addidtion in Operating System - Linux

storage addidtion

ossupport55 — Thu, 17 Sep 2009 04:18:36 GMT

Dear all,
The node details are as follows:
ProLiant BL45p G1
Driver version
8.02.00.06.05.03-k
Firmware version
3.03.26 IPX
Model name
QLA2312
OS RHEL 5.3
Fibreutils
3.0.3

Now the qusetion. When storage was allocated it did not show up in /proc scsi table even after doing a hp_rescan -a. I then did a
echo "1" > /sys/class/fc_host/host?/issue_lip which momentaraly showed up the storage in proc scsi. With the given details please tell me what the correct procedure or steps to follow to get new storage detected.
cheers

Re: storage addidtion

ossupport55 — Tue, 22 Sep 2009 04:00:38 GMT

Dear all,

Is there anything wrong in the question i have asked?

cheers

Re: storage addidtion

Michal Kapalka (mikap) — Tue, 22 Sep 2009 04:24:01 GMT

hi,

search it in the /sys directory :

class or devices

mikap

Re: storage addidtion

Matti_Kurkela — Tue, 22 Sep 2009 14:39:32 GMT

According to RedHat, the issue_lip is the correct procedure for RHEL 5.

http://kbase.redhat.com/faq/docs/DOC-3942

In RHEL 4, issue_lip was not "fully supported" (= not 100% reliable and/or supported with all FC drivers, I guess?).

I believe that hp_rescan was developed mainly to work around this problem in RHEL 4 and below. Last time I checked, hp_rescan was simply a script that used a combination of strategies similar to the above-mentioned RHKB article.

MK

Re: storage addidtion

Court Campbell — Tue, 22 Sep 2009 14:51:41 GMT

You need to issue a lip if you want to query any new devices. Otherwise you would have to reboot. A lip is does a reset and then basically says "hey, is anybody out there? please respond." I believe this is supposed to occur automagically when a device is added on the fabric, but doesn't always work.