[Info-vax] Error mounting system device after cluster creation

[John E. Malmberg]

On 7/7/2019 8:02 AM, Daniel Sundqvist wrote:

> 
> According to my very limited knowledge there is this ALLOCLASS wich
> is used to differentiate between devices in the cluster. If there is
> some  other relevant is beyond me right now ;)

ALLOCLASS is only needed if more than one system has a direct path to 
the storage.

This would be if DUAnnn on FRODO used the same exact container file as 
DUAnnn on GANDLF.

This would only work on SimH if there is no buffering or caching of 
reads/writes to the storage by either SimH or the host operating system. 
  Then the alloclass would be set the same on both systems.

If you do not have multiple paths to the same storage, you do not need 
to deal with alloclass and it can just confuse things.

I recommend that you do some reading at:
https://sourceforge.net/p/vms-ports/wiki/Home/

I run SimH under LXD and libvirt.  It both simplifies the networking and 
it makes the systems show up as somewhat manageable systems via most 
standard open source private cloud management tools.

DECwindows files are used if you want to use X11 to access your 
SimH/VAX.  However you need a Alpha or IA64 VMS system as a font server 
to get things looking right.  A FreeAXP instance will work.  I have not 
tried ES-40 for that yet.

As you learn, help update this wiki for others.

Regards,
-John
wb8tyw at qsl.net_work