[CentOS-virt] VMWare 4.1 and CentOS
Nataraj
incoming-centos at rjl.com
Mon Oct 25 20:33:06 EDT 2010
Drew Kollasch wrote:
>
> Is there any known issues when trying to run CentOS (x86 or x64) on a
> fresh install of vmware 4.1?
>
> Details as to why I am asking are here in the CentOS
> forums: https://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&order=DESC&topic_id=28521&forum=39
> <https://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&order=DESC&topic_id=28521&forum=39>
>
> Thanks!
> -Drew
>
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What OS and kernel version have you configured your ESX virtual machine
for? Are you at all trying to run a non standard kernel? The OS/kernel
version settings on vmware are not just for for informational purposes,
but instead vmware makes very specific assumptions about what clocking
options (and possible other things) are configured in your kernel based
on these settings. It assumes, for example that Redhat 5 does NOT use a
tickless kernel and that all recent releases of Ubuntu do use a tickless
kernel. If you choose a setting that is too far off from the kernel
your running, you will have major clocking issues and your machine may
not run.
I discovered this when I had a VMware virtual machine from a hosting
provider and was having problems. Finally, I was able to write a small
program which did a select with a timeout, that would not run in the VM,
but ran in other places. I called the hosting provider and asked them
to read me the vmware config parameters for my VM and sure enough I was
running CentOS 5 and they had configured my VM as Ubuntu. They changed
that to Red Hat and all my problems went away.
Nataraj
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