On Sunday, April 21, 2019 at 11:28 AM, Zane Healy wrote:
> I have a DL380 on the way to add to my ESXI cluster here at home. As a result
> I’m looking to finish virtualizing my DEC HW. What is the best way to convert
> a physical SCSI HD to a disk image for SIMH? I need to do this for both VAX
> and PDP-11.
If these are SCSI disks, AND you have a host system with a SCSI host adapter
that can connect to these disks (i.e. it is the correct SCSI width, and type),
then you can do this directly using simh from the host system.
Warning: If you try to do this under some complicated set of layered
virtual systems, then you are on your own (recall your VNC experience).
Depending on your host system the OS will have some name for the
above mentioned SCSI disk(s) which you've connected.
When you connect these disks to the host system, BE SURE not to
perform any action on these drives BEFORE you let simh see them.
Be sure you identify the raw device name that the OS sees the newly
connected SCSI disks as. Knowing that name the following should work
with a VAX or PDP11 simulator. Note that this will probably have to
be done as root in order to access the physical devices.
# vax
sim> ATTACH RQ0 -c <rawdevicename> disk1.vhd
sim> DETACH RQ0
This will produce a "disk1.vhd" container file with all of the bits that can be
read from the original SCSI disk.
Repeat as necessary for each original disk.
> One of the main systems that I want to Virtualize is a VAXstation 4000/60
> with a BA350 shelf. The only HD connected to the system is a RZ28-VA SBB
> (2GB) as DKA200:, so yesterday I added a RZ29-VA SBB (4GB) as DKA100:. I
> setup Standalone Backup on the RZ29 and booted into Standalone backup.
>
> I tried to run the following:
> backup/image/verify dka200: dka100:[000000]20190420-system.sav/sav
>
> I ended up with a very strange “No valid storage bitmap found” error, and it
> failed to copy anything.
>
> Facility: BACKUP, Backup Utility
> Explanation: Software bad block data is not present on the volume. The
> volume has been initialized with no bad blocks.
> User Action: Execute the Bad Block Locator utility before using the volume.
> NOBITMAP, no valid storage bitmap found on 'device-name’
>
> I tried ANALYZE/MEDIA, but may not have been doing things right. This is a
> Genuine RZ29-VA, but it was originally used as part of a disk array for a Sun
> Sparc system.
This exercise will merely put a backup saveset on another disk which I don't
see getting you very far towards making it accessible from simh.
Meanwhile, I suspect you are seeing a failure under standalone backup due
to the fact that after you added the DKA100 disk drive to the system you
didn't initialize the disk. You can't initialize a target disk under standalone
backup, so you'll have to do that with full VMS running before you attempt
the backup again.
- Mark
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