messed up config of storage array on rp2470 running HP-UX11i v1

[Victor_101]

Hi guys,
Iâ m in sort of a mess. I have 2 rp2470 servers .. each one connected to their own DS2100 disk arrays.. (each) , these were connected on a 4 port scsi cards installed on the rp2470s. they were on path 0//4/0/1 . I wanted to connect an external Quantum DLT 8000 on the same connector for a short time .. so I disconnected one of the DS2100s from the server (say server 1) and instead connected it to the DLT drive. And started up the server. I found on the quantum website that some patches are required to use a Quantum8000 DLT on HP-UX 11iv1..since I was unable to install the individual patches due to the innumerable dependencies required I used the DLT patch set available on the HP site which contained all the required patches.. also I included all the drivers for tape drive into the kernel using SAM (including stape and tape2). The DLT was supposed to show up in the ioscan â fnC tape or just ioscan.. after a kernel rebuild and rebootâ ¦ .. but it didnâ t .. so after trying all of the above in sequence over 2 days.. finally I tried connecting the DLT to the 2nd server ( say server 2) and reconnected the DS2100 on server1.. while on server2 after connecting the DLT ( I had previously added the drivers for the tape devices into the kernel and rebuild and rebooted) the ioscan still returned the DS2100 .. even though there was no physical connection to the disk array. Whilst on server 1 I could not find the DS2100 after connecting it back.. since this worried me I eliminated the DLT totally from the setup and restored everything back to the initial configuration..now I have lost both the DS2100 on both the serversâ ¦ I even tried diagnose the missing disk in SAM but to no availâ ¦ I think I remember reading on one forum that u can force the driver on the pathâ ¦ can I do that ?? should I do that.. is there something basic that Iâ m missing.. ofcourse from all the above.. u may have guess that I am pretty much the novice at HP and Unix in general.. and I am on a small time-constraint.. so ur prompt suggestions will be much appreciated..

[Naveej.K.A]

Hi,

Is the SCSI terminator connected to the DS2100??

Try changing the SCSI id. there is a switch behind the box to change it. and do an ioscan and see if its getting detected

with best wishes
Naveej

[RAC_1]

Things to check --
scsi id
terminator
cable connections.

If all is in plpace, reboot and once on root prompt, do ioscan -fn, insf -ev
and check again with ioscan -fnCdisk, do you see the disks as claimed now??

Anil

[Victor_101]

hey guys,
i forgot to mention that at the end of the boot sequence.... just before the console login .. it says loading the 2 gb /1gb fibre channel interconnect then it says

IRMD[severe] adapter 0/4/0/0 PDrv 0:10 at startup is in failed state
IRMD[severe] adapter 0/4/0/0 PDrv 0:12 at startup is in failed state
IRMD[severe] adapter 0/4/0/0 PDrv 0:14 at startup is in failed state


will check on your current suggestions
still 12 hours till i get to try it.. i dont mind some other suggestions in the meantime..

victor..

[Patrick Wallek]

When you have a chance, can you post the output of 'ioscan -fn' please.

[Ted Buis]

The ds2100 is JBOD, not an array, however, it sounds like you could have it connected to a 4-port SCSI RAID controller card. This is a completely different animal than a standard SCSI card that you would connect a DLT. Use one of the built-in SCSI ports on the rp2470 to talk to the DLT. I would suggest you place a call to HP support. If you don't have a support contract, you should be able to do it on a per problem basis, to see if there is a way to recover. You might also try to check the documentation on the 4-port SCSI card at www.docs.hp.com.

[Victor_101]

alright guys.. i fixed it. or atleast moslty.. first of all i cofirmed that this model of the Quantum DLT is an LVD/SE so no worried.. i was getting the message at booting that IRMD was giving a severe error and the device on the path that was meant for the DS2100 was in failed state.. so i went to the IRM and just saw all the devices.. clicked on each of them to configure.. it told me nothing more to configure.. then it asked me to save.. i did and exited. then i did an ioscan -fn and voila!!! all is ok .. devices claimed.. did a mountall and my VGs on the DS2100 are back to life.. ... i have another problem still on one of the machines.. it says that the VG cannot be mounted when i try a VGCHANGE.. but the disks are claimed but in failed state in the IRM .
will post the output of the vgchange and lvmtab in an hour..