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

/swap

milaren — Mon, 24 Mar 2003 05:24:17 GMT

/dev/vg00/lvol1 /stand 200 hfs
/dev/vg00/lvol2 swap 1024
/dev/vg00/lvol3 / 800 vxfs
/dev/vg00/lvol4 /home 800 vxfs
/dev/vg00/lvol5 /opt 10000 vxfs
can anyone tell me what type of swap,hfs or vxfs?

Re: /swap

Ravi_8 — Mon, 24 Mar 2003 05:35:22 GMT

Hi,

swap is neither hfs nor vxfs, it's different kind of file system which contiguous

Re: /swap

milaren — Mon, 24 Mar 2003 06:06:53 GMT

3Q!

Re: /swap

Norman_21 — Mon, 24 Mar 2003 06:43:30 GMT

Hello,

I'm just putting my $0.02 Cents in here:

If you have Secondary swap space, then it is a file system. But if you have only the primary swap, then it's a device file. Do this to find out:

#swapinfo -ta

It'll tell you if you have Primary or Primary and secondary swap configured in your system.

Thanks.

Re: /swap

Michael Tully — Mon, 24 Mar 2003 07:54:45 GMT

As stated, swap is neither hfs or vxfs, these are acronyms for filesystems. Swap is not a filesystem. It is an indepenendant logical volume. You can view your swap partitions using 'swapinfo -ta' or you can use 'glance' if you have it. You can also see the priority of your swap partitions by viewing the /etc/fstab file. You will find that your primary swap partition (/dev/vg00/lvol2) is not listed.

Re: /swap

Trond Haugen — Mon, 24 Mar 2003 08:19:10 GMT

Just to add to the explanations already given. Primary swap is always "device swap". Additional swap can be "device swap" or "filesystem swap".
Primary swap should not appear in fstab (if it does you get a error message about it at boottime). Secondary swap usually goes in fstab (so it will be enabled at boottime).

Regards,
Trond

Re: /swap

Dave Wherry — Tue, 25 Mar 2003 15:01:56 GMT

A short addition to Trond's comment about swap volumes not being in fstab. Yes it will generate errors.
I usually do put an entry in fstab for my swap volumes. Those entries are just comments though. Put a # at the beginning of the line. I've also done it with raw volumes just for documentation purposes. If swapinfo or LVM commands were not working for some reason, I can at least go to fstab for volume information. Of course I have to manually keep it up so it's only as accurate as I make it.

Re: /swap

CCIL — Tue, 25 Mar 2003 15:33:37 GMT

Hi !
The swap is different type of file system which is used when you run out of physical memory . hfs is High throughput file system , the /stand file system is always hfs file system. vxfs is veritas file system , you can check the contents of the file /etc/defauls/fs , which will be your default file system .
whenever you create a file system with newfs & without -F option it always refers to /etc/defaul/fs entry.