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mount advfs domain/fileset on diferent system simultaneusly

María del Mar Farfan
Occasional Visitor

mount advfs domain/fileset on diferent system simultaneusly

Is it possible to mount an advfs domain/fileset on two systems, being one in read-only mode and the other in writing mode.
5 REPLIES
Venkatesh BL
Honored Contributor

Re: mount advfs domain/fileset on diferent system simultaneusly

I am not sure if this can be done. But, how about mounting this as AdvFS file system on one machine and mounting through NFS in (ro)on the other machine?
María del Mar Farfan
Occasional Visitor

Re: mount advfs domain/fileset on diferent system simultaneusly

For security reasons, there is no network conectivity between the two machines so I cannot use NFS. Any other suggestion to share information without using TCP/IP?
Vladimir Fabecic
Honored Contributor

Re: mount advfs domain/fileset on diferent system simultaneusly

No, it is not possible without cluster software.
Even when you mount file set read-only, you write to domain log. And the result is corrupted domain (file system).
I see no other way than TCPIP (NFS).
In vino veritas, in VMS cluster
María del Mar Farfan
Occasional Visitor

Re: mount advfs domain/fileset on diferent system simultaneusly

There is no solution to my problem
Hein van den Heuvel
Honored Contributor

Re: mount advfs domain/fileset on diferent system simultaneusly

>> For security reasons, there is no network conectivity between the two machines so I cannot use NFS. Any other suggestion to share information without using TCP/IP?

That's very hard to imagine.
Two systems, physically close enough to share a scsi bus, but not allowed to share a network? What about a dedicated local network, just for nfs. Use a cross-over cable or a $20 home switch?

> mount advfs domain/fileset on diferent system simultaneusly

AdvFS might be too advanced for this purpose.
It will certainly reserve the volume (at scsi level). But maybe for limited, well known usage, data transfer purposes a mounted (rw on one, ro on the other) UFS partition will do the job? You woudl have to wait for , or issue explicit, 'update' commands before looking at data.

Or go even lower. Use an unmounted raw partition. Use dd to copy a tar or zip file there when bulk data needs to be transferred.

Both cases would need a properly shared bus: fibre channel, or FWD with KZPSAs for example. There Tru64 will support multiple initiaors on the bus, and can handle bus resets.

It will not be supported, but it might just work.

fwiw,
Hein.