Re: Mounting identically labelled disks (OVMS73)

From: John Laird (nospam_at_laird-towers.org.uk)
Date: 01/16/04 

Date: Fri, 16 Jan 2004 13:30:08 +0000

On Thu, 15 Jan 2004 21:30:35 +0000 (UTC), News Reader
<read.news@hostname.invalid> wrote:

>Now there really is no issue about confusing identically labelled disks!
>No, really. On VMS I can distinguish them easily - they're different
>devices, and on Unix I can distinguish them easily - they've different
>mount points.
>
>So, how to stop VMS's nannying; letting me nfs share identically
>labelled disks?

If you are prepared to forego the file and record locking provided for free
by VMS, then sure there is no issue with identically labelled disks. But
most of us like having our data protected (which only comes across as
nannying to the terminally insane), and afaik you cannot disable locking.
So, shared devices must have unique volume labels within their "domain".
Domain is process, group or system, so you can have three instances of the
"same" disk.

I think there are sound technical reasons why the device name is not used,
but can't offhand think of what they are. Better minds than mine can
explain. 

-- 
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