topic Re: single interrupt for upgrades. in Operating System - HP-UX

single interrupt for upgrades.

Hakki Aydin Ucar — Sun, 21 Mar 2010 11:32:14 GMT

I need to upgrade JRE, so need apply patches need reboot after applied. And at the same time, I need to extent /opt file system due to new software to be applied is bigger. So I have to interrupt system applications two times due to disk extension needs work in single-mode. I am looking for a solution in single interrupt the server (because there are 8 servers to be upgraded); a solution like this , after applied patches go into single user-mode OR run level 1 (it is enogh for me to extendfs ) instead of reboot ?? Any advise ?

Re: single interrupt for upgrades.

James R. Ferguson — Sun, 21 Mar 2010 12:13:47 GMT

Hi:

You apparently don't have OnlineJFS. That's a real deficiency in my opinion.

That said, yes, you need to unmount '/opt' to extend it. The easiest way to achieve this is to *boot into* single user mode; extend the filesystem and then bring the system to run-level-3.

The SD tools ('swinstall', etc.) are dependent upon networking which you don't have in single user mode.

However, you could declare a downtime of appropriate length; boot into single-user mode; extend your filesystem; use 'init' to move to run-level-3; perform your 'swinstall' and then after its required reboot, resume normal operations.

Regards!

...JRF...

Re: single interrupt for upgrades.

Kapil Jha — Mon, 22 Mar 2010 01:01:35 GMT

which HPUX version, /opt can be increase online if you have OJFS it can be done without reboot.

Else you have to have 2 reboots, the time saving idea by JRF is pretty cool, instead of reboots just switch the run level which is much faster:)

BR,
Kapil+

Re: single interrupt for upgrades.

Prabhat_1 — Mon, 22 Mar 2010 02:33:11 GMT

Dear Aydin,

You may try the following.

You might be running your system on runlevel 3 or more.

Bring the system into single user mode
# init s or S
activate vg00 if not activated by
vgchange -a y vg00
Extend /opt
# lvextend ....
# extendfs ....
then bring your system into runlevel 2
# init 2
preview your patches
# swinstall -p -x (if you want to use some options) -s (source of the patches) and patch selection
Install the patches
# swinstall ....
if you want to reboot after patching you can use -x autoreboot=true option.

By this way you only need to interrupt your system only once.

Hope it helps, and if so, please rate the solution.

Thanks and Regards,
Prabhat

Re: single interrupt for upgrades.

Dennis Handly — Mon, 22 Mar 2010 05:12:56 GMT

>So I have to interrupt system applications two times due to disk extension needs work in single-mode.

You simply don't start your applications until you are done with all of your changes.
You don't mention what HP-UX version and whether you can use DRD.

Re: single interrupt for upgrades.

Hakki Aydin Ucar — Mon, 22 Mar 2010 05:35:41 GMT

>Dennis:You don't mention what HP-UX version and whether you can use DRD.

HP-UX 11i v1 and we do not have DRD, we do not have Online JFS.

Re: single interrupt for upgrades.

Hakki Aydin Ucar — Mon, 22 Mar 2010 07:38:32 GMT

>Prabhat: # swinstall -p -x (if you want to use some options) -s (source of the patches) and patch selection

is it possible postpone reboot system if a patch needed reboot after installation ?

like this:

swinstall -p -x auto_reboot=false ???

Re: single interrupt for upgrades.

Johnson Punniyalingam — Mon, 22 Mar 2010 07:44:12 GMT

>>>is it possible postpone reboot system if a patch needed reboot after installation ?<<<<

Yes,

Example :-

swinstall -x autoreboot=false -x patch_match_target=true \ -s /tmp/PHSS_39876.depot

Re: single interrupt for upgrades.

Dennis Handly — Mon, 22 Mar 2010 10:46:16 GMT

>Johnson: swinstall -x autoreboot=false

That's not what the documentation says. It says it will not install if it needs to reboot:
Prevents the installation of software requiring a reboot

Re: single interrupt for upgrades.

Hakki Aydin Ucar — Mon, 22 Mar 2010 11:34:00 GMT

>Dennis:Prevents the installation of software requiring a reboot

So , there is no way to install patch and deferred reboot ? once patch that required reboot is installed server must be rebooted , OK ?

Re: single interrupt for upgrades.

Dennis Handly — Mon, 22 Mar 2010 11:50:24 GMT

>there is no way to install patch and deferred reboot? once patch that required reboot is installed server must be rebooted, OK?

That's correct. But an interactive swinstall will wait until you reply. But you can't use another swinstall nor abort it (it will reboot).

Re: single interrupt for upgrades.

Hakki Aydin Ucar — Mon, 22 Mar 2010 12:20:58 GMT

>Dennis: That's correct. But an interactive swinstall will wait until you reply. But you can't use another swinstall nor abort it (it will reboot).

I also need to extend npty kernel parameter, you know it required reboot also. I tried deferred kernel update method to postpone reboot, I mean after patches installed, when I check the parameter npty I saw it did not change. But I tried it in my lab with the same HP-UX OS 11i v1 and worked. is there any way to do it ?

Re: single interrupt for upgrades.

Dennis Handly — Tue, 23 Mar 2010 09:36:14 GMT

>I also need to extend npty kernel parameter, you know it required reboot also.

You should be able to do both at once. You would have to do your kernel parm changes first.