Article 107491 of comp.os.vms:
I had a neat little program on VAX which interrogated the DAD devices to
discover which services were available, and mount them clusterwide (using
locks).

The problematical bit is:

$qio(	chan := dadchan,
	func := io$_virtual+io$m_access,
	iosb := iosb,
	p1 := buff80,
	p2 := SIZE(buff80),
	p3 := %x10000*seq + code);

Code is 2 to get servers, 3 to get services on those servers, seq steps from 0

So call this with 2 to get first infoserver, then 3 to get first service,
%x10003 for second, %x20003 for third and so on, then %x10002 for the second
infoserver etc.

This worked well on VAX - all you had to do was put a CD in a drive, and within
a minute or so it was mounted clusterwide, with no intervention.

On Alpha it gives %SYSTEM-F-ILLIOFUNC (as a return status, not an iosb status).
Anyone know how to fix it for Alpha please ?

[VAX VMS 6.1, Alpha VMS 6.2]

Thanks, Chris Sharman