topic Re: Seeing a disk on EMC that's JUST been made available in Operating System - HP-UX

Seeing a disk on EMC that's JUST been made available

WSS — Wed, 22 Feb 2006 05:37:35 GMT

Hi guys,

This is probably an easy one for most of you.

The storage team have just changed the masking, so I am supposed to be able to 'see' some disks on the EMC from the server for the first time, but I can't see them.

What do I need to run to be able to see these newly presented disks?

I tried 'insf -e' but without luck.
Your help would be appreciated, and points awarded.

Thanks in advance...

Re: Seeing a disk on EMC that's JUST been made available

Arunvijai_4 — Wed, 22 Feb 2006 05:39:47 GMT

Hi WSS,

Have you tried running # ioscan -fnC disk ?

It should be the one what you are looking for ?

-Arun

Re: Seeing a disk on EMC that's JUST been made available

LoC_1 — Wed, 22 Feb 2006 05:39:57 GMT

Hi

If they are presented
#ioscan -fnC disk should rescan the bus and you should see them.
Louis

Re: Seeing a disk on EMC that's JUST been made available

Muthukumar_5 — Wed, 22 Feb 2006 05:40:42 GMT

what you are getting for,

# ioscan -fnC disk

--
Muthu

Re: Seeing a disk on EMC that's JUST been made available

Devender Khatana — Wed, 22 Feb 2006 05:40:59 GMT

Hi,

Sometimes a reboot is required to see new luns but it should not be the case always. Try ioscan as well before insf for the new devices to be scanned before creating device files by

#ioscan -fnC disk
#insf

HTH,
Devender

Re: Seeing a disk on EMC that's JUST been made available

Peter Godron — Wed, 22 Feb 2006 05:41:55 GMT

All,
before answering, please read posters previous question.
Suggesions were to do an ioscan, but without success. Reboot was advised.

Re: Seeing a disk on EMC that's JUST been made available

WSS — Wed, 22 Feb 2006 05:45:08 GMT

Yes of course I have tried an ioscan to see if the disks are available, but they are not yet available to see ....

What I was looking for was a command, to allow these disks to be seen by an ioscan...

Thanks in advance

Re: Seeing a disk on EMC that's JUST been made available

Muthukumar_5 — Wed, 22 Feb 2006 05:46:45 GMT

Are the DISK are in CLAIMED state. Check out it. May be you have to reboot (init 6) after that check with ioscan -fnC disk and find CLAIMED state.

--
Muthu

Re: Seeing a disk on EMC that's JUST been made available

Muthukumar_5 — Wed, 22 Feb 2006 05:49:19 GMT

Yes. That is it. shutdown your machine. Check the physical connectivity and reboot it again. You can able to see the DISKS. Else it is not connected or assigned properly to your machine.

Example:

disk 48 0/6/1/0.97.5.19.1.3.5 sdisk CLAIMED DEVICE EMC
xxxx /dev/dsk/c9t3d5 /dev/rdsk/c9t3d5

--
Muthu

Re: Seeing a disk on EMC that's JUST been made available

Arunvijai_4 — Wed, 22 Feb 2006 05:49:42 GMT

Hello,

A reboot should require to see the disks..

-Arun

Re: Seeing a disk on EMC that's JUST been made available

Devender Khatana — Wed, 22 Feb 2006 05:53:32 GMT

Hi,

Ensure that you have not used u option with ioscan. If still you can not see the luns than reboot is the option left.

HTH,
Devender

Re: Seeing a disk on EMC that's JUST been made available

Arunvijai_4 — Wed, 22 Feb 2006 05:53:39 GMT

Hello,

Check thse threads for more information

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=984903
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=692550

-Arun

Re: Seeing a disk on EMC that's JUST been made available

Ajitkumar Rane — Wed, 22 Feb 2006 06:42:18 GMT

WSS,

Try "syminq" to check if you can see the new disks. Since you have already tried the insf -e cammond and you still dont see the disk, I doubt they are properly assigned to the server. If the system can see the disk insf -e should simpy add the new device files without a reboot.

Goodluck,

Ajit

Re: Seeing a disk on EMC that's JUST been made available

Chan 007 — Wed, 22 Feb 2006 06:45:50 GMT

WSS,

What is the array that you are using,
if you are using a Clariion Array, then I recon you stop and start the Naviagent on your server.

Also can you post your IOSCAN output so that members can provide a more advice.

Chan

Re: Seeing a disk on EMC that's JUST been made available

WSS — Wed, 22 Feb 2006 06:56:26 GMT

As the title suggests, I am using an EMC array. EMC Symetrix.

How is posting the ioscan output going to benefit anyone? I can't see the disks, so you're not going to be able too... Plus without knowing what disks we could see prior to the disks being 'made available' you're not going to know what to look for.

I will be trying a reboot tonight to see if the disks become available, so will know more then.

Thanks all for your replies....

Re: Seeing a disk on EMC that's JUST been made available

Mark Greene_1 — Wed, 22 Feb 2006 17:10:46 GMT

Is there a fibre switch between the Symmetrix and the HP box, and were any changes made there recently?

Otherwise, try fcmsutil /dev/td1 stat (with the device appropriate to your system). See the man page for fcmsutil for more options.

mark

Re: Seeing a disk on EMC that's JUST been made available

Geoff Wild — Wed, 22 Feb 2006 19:06:43 GMT

Are the EMC tools installed?

EMC commands should be in:

/usr/symcli/bin

Run a /usr/symcli/bin/syminq

You might have to run a:

symcfg discover

ioscan -fnC disk
insf -eC disk

If storage team does their job, they should do this all for you - and send you an email with the new devs.

Rgds...Geoff

Re: Seeing a disk on EMC that's JUST been made available

Stuart Abramson — Thu, 23 Feb 2006 09:38:40 GMT

If your SAN Team knows what they are doing, and if your HP-UX is built well, stable, etc, you shouldn't have to reboot.

Do you have "symcli" installed (EMC Solutions Enabler)?

Do you have PowerPath installed?

Here is the sequence that I go through to discover new volumes:

# symcfg discover
# symmask refresh
# ioscan -fnCdisk
# insf -eCdisk
#symcfg discover
# powermt restore
# powermt check
# powermt config
# powermt save
# powermt display dev=all

You can see the new volumes by the DATE field on the device file:

ll -nt /dev/dsk

Re: Seeing a disk on EMC that's JUST been made available

Edgar Matzinger — Thu, 23 Feb 2006 10:57:16 GMT

Hi WSS,

if you've ran ioscan -fnC disk and you still do not see the EMC LUNs (as disks), then the SAN-zoning is NOT updated/adjusted.

Check with the SAN guys, cu l8r, Edgar.

Re: Seeing a disk on EMC that's JUST been made available

Seth Clarke — Thu, 23 Feb 2006 12:00:00 GMT

Here's what I do for an XP512

ioscan
ioscan -funC disk
insf -e
xpinfo -m
xpinfo -i

Does EMC provide utilities? I'd also check the SAN switches though their GUI