xp disk array and ioscan

[Kim Tran_4]

I have two identical systems A and B (same model, same os), which are connected to the same xp disk array through the same fc switch. I expect "ioscan -fnkC disk" will generate similar output. But that's not true (please see the attachment). Due to the difference, I can do mkboot -a "hpux /stand/vmunix" /dev/dsk/c4t4d1 successfully on system A, BUT FAIL TO DO SO on the other with message "No device file found for EFI partition". Please advise. Thanks.

[Juan M Leon]

Hi, do you get any I/O errors on the syslog. I see that you are able to see all the paths on the XP for system a, can you see all the the paths for system B, is your fc reporting any errors?

I will suggest to check the FC switch first. Like you say both systems are identical and I assuming that both system have the same patch level.


Hope it helps

[Kim Tran_4]

I got no error message when doing ioscan in system B. The xpdisk array has more than 50 disks, all the paths are shown the same in both systems, except the one for this disk.

[RAC_1]

Are the OS versions same on both systems??
Is that disk the boot disk on both systems??

The error message makes me think that the OS on other system might be 11i v2.
In that case, the root mirroring procedure is a bit different.

Anil

[Patrick Wallek]

It appears that you need to use the 'idisk' utility to create the EFI partition on the disk on system B. That is *NOT* created by default. See the following document for more information:

Document description: Can idisk(1M) create the EFI Service Partition in HP-UX 11iV2?
Document id: UNX11iV2036
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000072193555

[Duncan Edmonstone]

c4t4d1 is the boot disk for system A yes?

I'm guessing that c4t4d2 is the boot disk for system B?

WHy do you want these machines to see each others boot disks? Are you hoping to move these systems 'personalities' between the two physical hosts?

I *wouldn't* run idisk on c4t4d1 on system B, as this is likely to destroy system A's boot disk!

What happens if you run:

insf -e -Cdisk

on system B - do you still not see all the partitions?

HTH

Duncan