IOSCAN -f hanging, no response, not able to kill it - HP-UX 11.11

[Michele (Mike) Alberton]

Hi,

a strange one. Trying to ioscan -f an rp8400 running HP-UX 11.11. I did not get any response.
Same thing via SAM (Disks section).

I could not even kill the process, since it got adopted by PID 1.

Nothing strange in the syslog:

vmunix I/O hardware probe time out.

Have you had this behaviour ?

Thanks in advance !

Mike

[Jaime Bolanos Rojas.]

Michelle,

Is everything else on the server working fine?

At first view, it looks like a hardware problem to me.

Can you reboot your machine, is it possible?

Run also some hardware testing with stm in the machine.

Regards,

Jaime.

[Sandman!]

Usually caused when HP-UX has exhausted all bus instances available thereby causing ioscan hangs. You might need to install PHKL_31018; if possible could you post the output of:

# ioscan -funC ext_bus

~thanks

[Sandman!]

Usually caused when HP-UX has exhausted all bus instances available thereby causing ioscan hangs. You might need to install PHKL_31018; if possible could you post the output of:

# ioscan -fkC ext_bus

~thanks

[Peter Godron]

Mike,
I have only had this type of problem if a hardware item, normally disk, did not respond. Reasons could be faulty disk (check with dmesg) or device termination fault.

[Michele (Mike) Alberton]

Jaime,

Sorry for the disturb.

We verified that there was huge activity on the drives, so that maybe that was the cause.

Now everything is fine.

Thanks again !

Mike

[Michele (Mike) Alberton]

Thanks a lot Folks!

[rick jones]

99 times out of 10, one doesn't need to perform a real rescan of the I/O tree. As such, I find that adding 'k' to the command line to get what the kernel already knows sufficient:

ioscan -fk

it is particularly useful on larger systems - like the rp84XX's