fuser hangs up on HP-UX 11.31

[Paolo_Ortenzi]

Dear Colleagues,

Our Sysadmin team is managing an Itanium BL390 with HP-UX 11.31.

On this server has been attached disks from a XP24K SAN and is running Oracle R12 EBS/rdbms applications.

Problem: everytime we run the command fuser, it takes ages before having a response, like in the case of this test I made:

root@udvdbs04:/# time fuser -u /opt
/opt:

real 19:54.7
user 0.1
sys 18:57.2

is there any solution to this problem?

Especially when using Oracle OUI to install/clone DB instances or making upgrades can take days to perform a single task, since the OUI uses fuser to check that the needed filesystem is not locked by a process.

[James R. Ferguson · Accepted solution]

Hi:

There is a recent patch to 'fuser'. You might apply
PHCO_41834 and see if this fixes your issue.

Regards!

...JRF...

[Paolo_Ortenzi]

Dear Fergusson, thanks I will install it and I'll test if this is the solution.

Thanks

Paolo Ortenzi

[Paolo_Ortenzi]

Looks like we DID NOT solve the problem after the installation of the patch.

I made just a test:

root:/# time fuser /home
/home:

real 18:37.4
user 0.1
sys 18:28.7

It is way TOO MUCH...

[Chris Wilshaw]

We've recently had the same issue although taht was in PA-RISC servers running HP-UX 11.11, and it turned out to be a problem caused by the utild daemon.

As a short term fix, you can just kill utild, and it will restart itself automatically.

The updated version of the software which solved it for us can be found at

https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=UTILPROVIDER

[Paolo_Ortenzi]

Dear Chris,

I tried to kill the utild daemon after launching (if I understand correctly...) the fuser.

The fuser command (same test I did previously to have a valid benchmark) on /home did not return the prompt but after a LONG time.

[Turgay Cavdar]

Hi,
Have you try to run the command with tusc? You may see which step it is waiting for?

#tusc -fp -ea -o /tmp/tusc.out fuser -u /opt

[Paolo_Ortenzi]

on HP UX 11v3 for Itanium, no tusc command installed.

[Viktor Balogh]

you can download it from here

http://hpux.connect.org.uk/hppd/hpux/Sysadmin/tusc-8.0/

[Paolo_Ortenzi]

I just made a test on my Itanium Integrity server, and I say on TOP that fuser takes more than 100% CPU and it runs steadily at that level.

This does NOT happens on all the rest of the PA-RISC servers that run HP UX 11v1