Device swap

[Ashish_29]

One LVOL was created of 10GB as secondary device swap.

later extended the same volume to 15GB from SAM. While executing 'swapon' it says paging is already enabled.

But swapinfo shows the available swap space is 10GB.

How to enable the rest 5GB space for swap?

[RAC_1]

If swap space is used from that lvol, you can not doo that on the fly. You will have to reboot. (Also need to tune maxswapchunks parameter)

Anil

[TwoProc]

I don't think you're going to get it until a reboot. For that reason - in the past when I've needed more swap, I've generally made a "tertiary" secondary swap. But, I think I've always assumed that it wasn't do-able to extend swap in the same lvol live, and therefore have never tried it.

[A. Clay Stephenson]

This can only be done via a reboot. I hate to think that you actually need this much swapspace because if you do, your performance is absolutely terrible.

[A. Clay Stephenson]

It's also a good idea to check your current maxswapchunks kernel tunable because otherwise it might require two reboots.

[HGN]

Hi

Enabling swap on the fly is not possible and a reboot is required to enable this, like thers who have suggested you can look into the maxswapchunks kernel parm also.

Rgds

HGN