topic Re: Info Regarding reducing swap without rebooting the system in Operating System - HP-UX

Info Regarding reducing swap without rebooting the system

akshata bv — Wed, 06 Jun 2007 05:58:53 GMT

Hi,

I am working on a critical HP-UX 11i server. We need to recreate the swap as it has not been created according to the standard. This swap space is a device swap. Is there a way to delete this swap without rebooting the server and recreating it once again according to standard?Is hashing of the entry in /etc/fstab and rebooting the server the only solution to remove device swap?

Thanks in advance for taking time to reply to my enquiry.

Regards
Akshata

Re: Info Regarding reducing swap without rebooting the system

Pete Randall — Wed, 06 Jun 2007 06:05:01 GMT

There is no such thing as a "swapoff" command so your only choice is reboot.

Pete

Re: Info Regarding reducing swap without rebooting the system

Bill Hassell — Wed, 06 Jun 2007 06:11:14 GMT

Swap space is the same as RAM since this is a virtual memory OS. Therefore, swap space can never be reduced on a running system, whether it is used/reserved or not. There is nothing to change in fstab except to remove additional (secondary) swap space. the primary swap space can never be removed or reduced in size except by reinstalling (ie, using Ignite/UX). If you are removing secondary swap space, you remove the entry from fstab and then reboot. You can add swap space at any time with swapon.

Re: Info Regarding reducing swap without rebooting the system

akshata bv — Wed, 06 Jun 2007 06:28:38 GMT

Hi,

Thanks to all for replying.

I was talking about reducing secondary swap. So there is no option to remove swap without reebooting.

Will get a down time and remove the secondary swap and recreate them.

Regards
Akshata