FreeBSD 4.10-RELEASE-p16 on ESX Server 2.5.1

Colin Farley Colin.Farley at
Sat Sep 24 14:51:20 PDT 2005

Thanks for your help, adding the two lines that you mentioned below fixed
the problem.

Thanks again,

-----owner-freebsd-stable at wrote: -----

To: Colin Farley <Colin.Farley at>
From: Tom Pepper <tom at>
Sent by: owner-freebsd-stable at
Date: 09/23/2005 05:27PM
cc: freebsd-stable at
Subject: Re: FreeBSD 4.10-RELEASE-p16 on ESX Server 2.5.1

vmware's virtual implementation of acpi collides with freebsd.  best
practice is to disable acpi altogether in the actual config file on
the host o/s for the VM by manually placing:

acpi.present = "false"
monitor_control.disable_apic = "TRUE"

in the whatever.vmx config file, and restarting the virtual machine.
read up on the vmware forums for some more information from yours
truly on trying to beat freebsd into running on ESX.  there's
additional problems you'll run into w/r/t crappy smbfs performance,
agent support, and some esoteric problems like nanosleep() calls
eating CPU instead of actually idling.


On Sep 23, 2005, at 2:08 PM, Colin Farley wrote:

> I'm having a problem with my FreeBSD virtual machines on the
> production HP
> DL360 G4p servers we are using.  In test I used a weaker ESX box
> and never
> had the issue.  The problem is when rebooting the virtual machine
> it will
> sometimes hang at "Waiting 15 seconds for SCSI devices to settle".
> This
> never happened on the test box and I have never encountered it before.
> Furthermore, if I use Vmotion (to move the virtual machine to a
> different
> ESX host) and bring the virtual machine up on another ESX server
> everything
> is fine and the virtual machine boots normally.  Because of this I
> figured
> that it was an ESX problem and decided to put a support ticket in with
> them.  They replied with this:
> "The particular "Waiting 15 seconds for SCSI devices to settle"
> message you
> are getting with FreeBSD is a known issue with the FreeBSD system that
> occurs
> on physical systems as well.
> The work around for it is to edit your kernel config file with
> SCSI_DELAY=1000' and to
> rebuild and install the new kernel"
> To me this doesn't sound right, can anyone confirm?
> Thanks,
> Colin
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