Remove swap

[hpuxrox]

Can someone tell me how to remove swap on hpux 11.23. This used to be in the fstab, but have no idea how to do it now..

[Torsten. · Accepted solution]

Remove the entry from fstab file and reboot.

[hpuxrox]

There is no entry in the fstab

[Tim Nelson]

Primary swap ? I would assume because all others should be in the fstab.

If removing or reducing primary you may have to do it by booting into lvm maintenance mode.

I do not think modifying with lvrmboot -s xyz /dev/vg00 will suffice. Never tried though.

[Patrick Wallek]

If you have no entry in /etc/fstab, then you probably just have primary swap, usually /dev/vg00/lvol2, defines and that CAN NOT be removed. Primary swap is REQUIRED.

If you post the output of:

# swapinfo -tam

we can verify.

[James R. Ferguson]

Hi:

To remove secondary swap space you delete the entry (entries) in '/etc/fstab' and reboot. Secondary swap can only be de-activated with a reboot. Following the boot, you can 'lvremove' the logical volume(s) representing the defunct swap device(s).

Regards!

...JRF...

[Torsten.]

How about

swapinfo -tam

[James R. Ferguson]

Hi (again):

Perhaps the entry was never made in '/etc/fstab', but the swap device created and activiated on-the-fly. I presume that you are seeing additional (secondary) swap in the output of 'swapinfo -tam'. If so, reboot as I indicated above.

Regards!

...JRF...

[hpuxrox]

# swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 8192 0 8192 0% 0 - 1 /dev/vg00/lvol2
dev 8192 0 8192 0% 0 - 1 /dev/vg00/lvol11
reserve - 1732 -1732
memory 8181 2859 5322 35%
total 16373 4591 11782 28% - 0 -

[Torsten.]

You want to remove this:

/dev/vg00/lvol11

right?

If it is not in fstab, a reboot should be enough to remove it. Perhaps it was created and activated since the last reboot.

[James R. Ferguson]

Hi:

Your 'lvol11' is secondary swap. The 'lvol2' is the primary swap device which is required and cannot be removed.

Remember that you do *not* specifiy primary swap in '/etc/fstab'. It is activated during startup independently. Should you specify a primary swap device in '/etc/fstab' you will see an error reported during startup to the effect that primary swap is already active.

Regards!

...JRF...