[syslinux] memdisk and iso

[Gene Cumm]

On Sat, Jun 8, 2013 at 3:10 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
> On Thu, Jun 6, 2013 at 7:02 PM, upen <upendra.gandhi at gmail.com> wrote:
>> On Thu, Jun 6, 2013 at 5:38 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
>>> On Jun 6, 2013 5:42 PM, "H. Peter Anvin" <hpa at zytor.com> wrote:
>>> > On 06/06/2013 02:40 PM, upen wrote:
>>> > >
>>> > > Some odd things I observed just now.
>>> > > 1. Since yesterday, I have been reseting the client box from
>>> > > Virtualbox VM
>>> > > menu (Reset option). This always showed me com32 vesamenu.c32 message.
>>> > > 2. Some time ago, I decided I power off the client VM( Close->poweroff
>>> > > from
>>> > > Menu). This time I saw the menu. It didn't show the background jpg
>>> > > though.
>>> > > Anyways I chose the menu option for loading ISO. It returned me the
>>> > > same
>>> > > menu options, while showing file not found messages at the bottom of
>>> > > the
>>> > > screen.
>>> > > 3. I tried reset as in (1), again com32 -vesamenu.c32 message as
>>> > > stated
>>> > > earlier.
>>> > > 4. Power off , power on . No menu this time. Shows the
>>> > > com32-vesamenu.c32
>>> > > message as stated earlier.
>>> > >
>>> > > No such issues with pxelinux.0 though.
>>> > >
>>> > > I am now rebooting TFTP/DHCP server and see if that helps  to any
>>> > > level.
>>> > >
>>> >
>>> > Sounds like it's losing lots of packets.
>>> >
>>> >         -hpa
>>> >
>>>
>>> What PXE OROM is being used?  VirtualBox version?
>>
>> Virtualbox version 4.2.12 r84980. AMD64.
>> 00:00:01.780076   LanBootRom     <string>  =
>> "/opt/VirtualBox/ExtensionPacks/Oracle_VM_VirtualBox_Extension_Pack/PXE-Intel.rom"
>> (cb=81
>>
>> Thanks.
>>>
>>> While working on 4.10-pre, I recall cases others saw with
>>> dropped/intercepted packets and observed a race in a VM when it was using
>>> the wrong lwIP call.  I was working on some verbose debug code that should
>>> help but need to port it up and finish it.
>
> Now that I have this straight, I recall some issue in VirtualBox 4.2
> that required a downgrade to 4.1.

https://www.virtualbox.org/ticket/8981
https://www.virtualbox.org/ticket/7385 see ~comment 21

Upen, what host OS name and version/release?  Looks to be a Linux
system.  Did you compile VirtualBox yourself?

--
-Gene