OT: Re: Resizing swap space on VMWare ESX Linux

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sunhux G wrote:
We've over-allocated the swap space on a newly installed
VMWARE ESX - 6Gb.

I was told that 800MB is the max & possibly 600MB for
swap space is sufficient though the VMWare blade comes
with 32Gb memory.

How can I reduce the swap space size without reinstalling
the ESX?

Hi U,

It's really not a big deal that you've over-allocated the swap for your ESX install -- it will only take away local disk from your COS which you should not be overly dependent upon anyway. Any virtual machine related files should be on shared storage -- in fact, I would recommend that any local VMFS filesystems be removed ASAP and not allocated to prevent local bus scans when scanning for new filesystems and/or devices from Virtual Center.

It's true that 800MB is the maximum amount of RAM that you can allocate to your service console, but it is *not* true that you can only allocate 800MB of swap to your service console, although it doesn't make sense to allocate more than 1.6GB of swap to the COS.

I would fix this in my build script and move on, leaving this until a better excuse to rebuild this ESX host comes up. I would *highly* recommend allocating 800MB of RAM to all of your ESX hosts to accommodate any activity or maintenance that you perform in your virtual environment.

(COS = console operating system = service console.)

HTH,
--
Josh Miller, RHCE/VCP
Seattle, WA
Linux Solutions Provider
http://itsecureadmin.com/

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