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From: DGUX on 30 Jul 2010 15:10
On Jul 30, 9:53 am, DGUX <dgu...(a)gmail.com> wrote:
> On Jul 30, 3:06 am, Aragorn <arag...(a)chatfactory.invalid> wrote:
>
>
>
>
>
> > On Thursday 29 July 2010 19:30 in comp.unix.questions, somebody
> > identifying as Scott Lurndal wrote...
>
> > > DGUX <dgu...(a)gmail.com> writes:
>
> > >> We got an old DG/UX (Data General UNIX) machine (an AViiON box, Intel
> > >> based). I'm trying to virtualize/emulate it, so that it would work as
> > >> is on a vm. I've DD'ed over the raw disks as images and I can boot it
> > >> up (bootloader works) but it doesn't load up the kernel/system due to
> > >> it's Adaptec PCI SCSI Controller and the lack of support from the
> > >> virtulization products side (which support mainly Buslogic and LSI).
>
> > >> From what I gathered, I got 2 choices here :
>
> > >> 1. Write an Adaptec driver / firmware emulation and such for a VM
> > >> product.
> > >> 2. Write a BusLogic/LSI driver for DG/UX.
>
> > > Depending on _what_ virtualization product you are using:
>
> > > 3. Port the XEN or KVM paravirt or virtio storage and network drivers
> > > to DG/UX.
>
> > In the event of Xen, the OP can also run the DG/UX system as a fully
> > virtualized guest - as opposed to a paravirtual guest - in which case
> > the guest doesn't need to know about the underlying hardware being
> > SCSI, as long as said guest itself supports a generic PIIX3 IDE
> > controller.  (Xen 4.0 and later /may/ actually even support SCSI
> > emulation to hardware-virtualized guests, but I'm not sure on that.)
>
> > > I believe that VMware may also support a paravirt block driver, but
> > > dunno  opensource status.
>
> > Well, with regard to paravirtualization, a block driver has to come as a
> > pair of two different drivers, one being the back-end driver in the
> > host - or in the event of Xen, the privileged guest - and one being a
> > front-end driver to be used in the unprivileged, paravirtualized guest.  
>
> > VMWare may itself have such a back-end driver, but then it still remains
> > to be seen whether there is a front-end driver for DG/UX.  The OP might
> > then want to write one of their own, but VMWare also supports full
> > virtualization, so perhaps that would be an easier approach.
>
> > The caveat would of course be that the hardware must have virtualization
> > extensions and that they are enabled.  This certainly applies to Xen -
> > without it, Xen only offers paravirtualization - but I'm not sure on
> > VMWare.  It is possible that VMWare supports full virtualization via
> > emulation, but that would be rather slow.
>
> > > All cases would be a substantial amount of work since the DG/UX kernel
> > > is much different from Linux, BSD or VMware.   Unixware (which like
> > > DG/UX is based on SVR4, if I recall correctly) has a driver for the
> > > aic7xxx chips; this may be the easiest to port, but it isn't open
> > > source.
>
> > (Open)Solaris is also based upon SVR4, and I believe it has a driver for
> > said Adaptec chips as well.  OpenSolaris is licensed under the CDDL, so
> > if it has such a driver, then the OP might study it in order to write
> > one for DG/UX.
>
> > (Disclaimer: I'm not well-versed enough on the CDDL to know whether it
> > allows that the driver simply be ported to a proprietary operating
> > system or not.  What I do know is that the GPL explicitly forbids that
> > sort of thing.)
>
> > --
> > *Aragorn*
> > (registered GNU/Linux user #223157)- Hide quoted text -
>
> > - Show quoted text -
>
> Full virt' would be great, but there is a caveat - DG/UX does not
> support IDE. Although it displays some BIOS options and such, the docs
> say : "Data General has not tested or qualified the use  of IDE
> devices in AViiON AV 2100 systems". I got a full list of supported
> hardware, straight from the DG system.
>
> Also, I don't need to port aic7xxx driver to DG. DG system already
> supports Adaptec, it only support Adaptec. I need either for the DG
> system to support a VM product controller, ie, buslogic/lsi or virtio
> or for a VM product to support Adaptec.- Hide quoted text -
>
> - Show quoted text -


===================


Don't know how many will see that, as it is an addition to an "old"
msg I posted.
Could've found a solution to my issue, regarding IDE.
Got a config list off the DGUX box with all supported hardware, no IDE
mentioned.
Also, docs say "Data General has not tested or qualified the use of
IDE devices in AViiON AV 2100 systems" many times.
BUT (and perhaps a big "but"), docs also mention _many_ IDE options
including "IDE Interface - Disabled/Auto" , "OnBoard IDE Controller -
enabled" and also in the docs - The AV 2100 board set consists of •
a system board with six PCI expansion slots, three ISA expansion
slots, and several embedded controller devices (PCI video, SCSI,
Network, and IDE).

and "..A SCSI-III AIC-7880 controller for connecting up to seven 8-bit
narrow SCSI devices. You can also connect a mixture of fifteen 8-bit
narrow and 16-bit wide SCSI devices to the controller—maximum of
seven 8-bit narrow SCSI devices. PCI-enhanced Integrated Drive
Electronics (IDE) hard disk interface that supports two hard disk
drives"

Also " Since the lower bay contains a SCSI CD-ROM drive, only one
other SCSI device can be installed. You can install an IDE device in
the remaining bay. "

And much more. The question is, if I have an exact image of the
primary disk and I did try to load it via an IDE drive (in Qemu/
VirtualBox etc), didn't work out. Like last time, bootloader booted up
and then hang after trying to load the kernel.
Is there something I can try and do as a different config in my image
file?
The thing is I don't think IDE is supported at all due to this log I
have of supported hw.

I want to send you, anyone, those files, hw log and whatever I got.
If you know the DG system and might be able to help, please email me
at dgunix(a)gmail.com

Thanks a million.


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