New hpux host in EMC array

[srinivas_42]

Hi
I am adding a new hpux 11i host to EMC Symmetrix array, this will actually replace one of old K class system. All the connection to EMC are direct connections. I have done the physical connections (cabling), and I could see the FCP card drivers installed in the systems. I am using EMC Symconsole, to drag and drop all the devices in the K class director to the new director where the new System is connected. But I can't see the disks in the new system. I guess EMC did not recognise my new host. Any idea on the procedure to add a new host to EMC Symmetrix?

Srinivas

[David Child_1]

Srinivas,

It has been a while since I have directly connected a host to a Symmetrix so I might need a little more info.

Do you have WideSky/Solutions Enabler installed so you can run some commands?

If you do try running 'symdev -sid show ' where nnnn is the last 4 digits of your Symmetrix serial number and dev is the Symmetrix device number for one of the devices you assigned. Make sure the output shows the correct FA and port that you are connected to.

David

[Michael Tully]

Even with direct connection, you still must have a gatekeeper device in which to communicate with the symm from the host. Does this appear in your ioscan output?

Second thing, is you still need to present what LUN's are to be un-masked to the host, this is done by activation from SYMCLI using the WWN of the HBA. Once this is done, an ioscan and running insf -e will present the LUN's. To do these tasks, you need the solutions enabler (SYMCLI) as mentioned by David or an ECC workstation. Are the connections being done to same front-end ports? If not, you will need to present them using symconfigure, or from the ECC workstation.

[srinivas_42]

Hi
Thanks for the response. I am assuming moving all devices from one to another is moving gatekeepers as well. But while moving, I was not able to move one device with error Gatekeeper.

1. How do I create the gatekeeper on this new system? Do I need to make a device with mknod?

2. EMC confirmed that they can see that particular FA port as online.

3. Michael could you please provide me the syntax for this WWN/HBA stuff. I am using the old version of ECC. (v4.3), but I have symcl commands and ECC console working.

[Michael Tully]

Presenting LUN's is done like this.
1) On the system that want the LUN's presented, get the WWN numbers of the /dev/td? devices

# /opt/fcms/bin/fcmsutil /dev/td0 (e.g.)
/opt/fcms/bin/fcmsutil /dev/td0

Vendor ID is = 0x00103c
Device ID is = 0x001028
TL Chip Revision No is = 2.3
PCI Sub-system Vendor ID is = 0x00103c
PCI Sub-system ID is = 0x000006
Topology = PTTOPT_FABRIC
Local N_Port_id is = 0x011700
N_Port Node World Wide Name = 0x50060b00000b0379
N_Port Port World Wide Name = 0x50060b00000b0378
Driver state = ONLINE
Hardware Path is = 0/2/0/0
Number of Assisted IOs = 251639
Number of Active Login Sessions = 1
Dino Present on Card = NO
Maximum Frame Size = 960
Driver Version = @(#) PATCH_11.11: libtd.a : Jun 28 2002, 11:08:35, PHSS_26799

okay, the number your interested in is "N_Port Port World Wide Name". Ignore the difference in Topology status, as the system I got this from is connected to a switch.

2) Go to the system that has your VolumeLogix software installed on it. The command you need is called 'fpath'
Find your gatekeeper on this server device e.g. /dev/rdsk/c10t0d0

# export VCMDBDEVICE=/dev/rdsk/c10t0d0

3) Find where you have your other SYMCLI commands, namely 'symcfg'

# symcfg discover

4) Present the LUN's required. The 3aa is the front end adaptor and the LUN numbers are in a range, hence the -r. You'll have to find your adaptor and range of LUN's.

# fpath adddev -w 50060b00000b0378 -f 3aa -r "003-038"

# fpath refresh

Once this is done, you should be able to run ioscan -fn on the server and LUN hardware addresses will appear.

# ioscan -fn
# insf -e (creates the devices)

clear as mud isn't it ...

[srinivas_42]

Hi Michael,
Thanks for the reply, you did make a clear explanation. But I am a little stuck on point 4. My server is connected onto Director 11 (upper port) on the Symmetrix, and the devices I want to move from the old host to this new one are 40 - 42, 34 - 3e (I am seeing these device numbers from SymConsole).

So in this case, what would be my -f and -r.

Also you did not mention about creating a gatekeeper device, is it because your gatekeeper device is already in 003 - 038 range?

Also wondering doesn't fpath adddev do the same thing as dragging and dropping in the Symm Console, from one director to another director.

[Michael Tully · Accepted solution]

Well if your changing to different ports, you may have to present the LUN's to those adaptors first. There are only two ways of doing that. One is from your ECC console, or using 'symconfigure'. Playing with symconfigure will cause havoc if you don't know your doing. Use the ECC management station to point the LUN's to the new front-end port. Once a server can see a front end adaptor, you should be able to see a gatekeeper utilising 'ioscan -fn'

'fpath' is only used to present/unpresent LUN's to a hosts HBA card. (WWN) the -f states the port that will be used (if already defined) and the -r says the range of LUN's to be presented.

For you:
# fpath adddev -w -f 11aa -r "40-42"

# fpath adddev -w -f 11aa -r "34-3e"

If you still can't get it to work, you may have to speak to an EMC CE.

[srinivas_42]

Thanks Michael. I will work on that and update you soon.

[srinivas_42]

Hi
Thanks for the replies. With the help of EMC I was able to see the disks. The actual problem is, the director switches in the EMC front panel were not turned on, as this was a new connection. Simple drag and drop of devices in the Console works to assgin disks.

Cheers,

Srinivas