[Simh] VMS Cluster boot on an unique container

[Matt]

This configuration works fine, I've used it several times before. Under
Linux no changes should be needed to the Simh code but under Windows you
will need to change sim_fio.c as follows:

#include "sim_defs.h"

change to:

#include <share.h>
#include "sim_defs.h"

---

return fopen64 (file, mode);
#else
return fopen (file, mode);
#endif

change to:

return fopen64 (file, mode);
#else
return _fsopen (file, mode, _SH_DENYNO);
#endif

This will prevent exclusive locking on the image file. I don't know if
any changes are needed to the other supported platforms.

I also did a demo last year with storageworks disks on a shared SCSI bus
between a PC and a VAX 4000-200 (with a CMD MSCP/SCSI card). The system
disk was a host based shadow set made up from two of the SCSI disks,
maintained by Simh and the real VAX.

Matt

On 29/09/2011 09:00, patrick renouvel wrote:
> Good morning,
>
> I used often SimH for VAX emulation Standalone as well as LAVC.
>
> I'd like to boot two SimH instance on the same disk (sys0 and sys1 )
> to have a copy of our Charon Cluster.
>
> Did somebody try this once ?
>
> Any lock troubles ?
>
> Thanks a lot for your precious help.
>
> Kind regards.
>
> Patrick.
>
>
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