topic Re: primary swap in Operating System - HP-UX

primary swap

mukkala — Thu, 27 Oct 2005 01:11:51 GMT

how to check primary swap logical volume / out of two logical volumes.

# swapinfo -a
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4194304 77148 4117156 2% 0 - 1 /dev/vg00/lvol2
dev 26640384 76168 26564216 0% 0 - 1 /dev/vg00/lvol9
reserve - 3499724 -3499724
memory 4792088 2208040 2584048 46%
#

Re: primary swap

GGA — Thu, 27 Oct 2005 01:15:53 GMT

hello

loot at this
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=939794

regards gga

Re: primary swap

Adisuria Wangsadinata_1 — Thu, 27 Oct 2005 01:21:23 GMT

Hi,

Normally, the first swap (by default) is /dev/vg00/lvol2 and the additional swap logical volume on your system is /dev/vg00/lvol9.

But from the output (swapinfo -a), you can see that both swap logical volume set as 1, so this mean both swap will work together since the priority given are the same.

Check the manpage of swapinfo for more details :

# man swapinfo

Hope this information can help you.

Cheers,
AW

Re: primary swap

Orhan Biyiklioglu — Thu, 27 Oct 2005 01:22:28 GMT

What do you mean by primary? By default /dev/vg00/lvol2 is the primary swap space however all swap devices and file systems enabled for swap have a priority between 0 to 10, indicating the order that swap space from a device or file system is used.

Check SWAP SPACE MANAGEMENT
http://docs.hp.com/en/5965-4641/ch01s09.html

hth

Re: primary swap

Adisuria Wangsadinata_1 — Thu, 27 Oct 2005 01:26:22 GMT

Hi,

I saw on this url below :

http://forums1.itrc.hp.com/service/forums/pageList.do?userId=BR892123&listType=unassigned&forumId=1

You assigned 0 of 20 responses.

Please assign points to the person who spend their time to help you, this will encourage them and make them happy.

Thanks & Cheers,
AW

Re: primary swap

VIKAS AGRAWAL — Thu, 27 Oct 2005 01:34:07 GMT

hi ,

Primary swap is always /dev/vg00/lvol2 , which is created at the time of system installation .

Vikas

Re: primary swap

Borislav Perkov — Thu, 27 Oct 2005 02:21:21 GMT

Hi Mukkala,

Primary swap is usually /dev/vg00/lvol2.
You can change it by command:

lvlnboot -s swap_lv

Where swap_lv should be the primary swap volume the next time the system is booted on the volume group. swap_lv must be a contiguous logical volume, and a root logical volume must have been previously defined with this command. The previously defined swap area must be removed with lvrmboot.

Regards,
Borislav

Re: primary swap

Ted Buis — Fri, 28 Oct 2005 09:29:37 GMT

You can change the priority of swap devices if desired. You may want to use 'sam' or try the 'swapon' command.

Re: primary swap

Geoff Wild — Fri, 28 Oct 2005 09:35:55 GMT

"primary" swap can be displayed with a lvlnboot -v vg00

Rgds...Geoff