mptutil(8) causes VMware VM to crash hard

[Ivan Voras]

On 02/11/10 23:29, Charles Owens wrote:
> Hello,
>
> We've been doing some work with mpt(4) and mptutil(8).  We noticed that
> in VMware (both Workstation and ESX) the SCSI controller is showing up
> as mpt0... so it seemed only natural to probe it with mptutil.  For

Which is probably useless as you can't exactly diagnose a virtual drive :)

> about 1 second, it looks ok (see below)... but what happened, in fact,
> is that the VM went down pretty much instantly (nothing on console... no
> panic, nothing).

For what it's worth this is the usual response of VMWare to any 
situation it can't handle - instant VM kill.

To its credit, it doesn't appear to affect the host / hypervisor itself.

> Behavior confirmed in both ESX and Workstation.  Any help with this
> would be appreciated.  I'd be glad to test patches or whatever.

What are you expecting to do with mptutil? Hardware diagnostics itself 
should be done on the VMWare host side.