[Simh] how to move vms backup tapes to the emulator

Rich Alderson simh at alderson.users.panix.com
Tue Nov 2 14:37:11 EST 2004


> Date: Mon, 1 Nov 2004 20:47:12 -0500
> From: "Lu, Mark" <LuMark at navcanada.ca>

> Supposedly you can use mt and dd to get the tape saveset directly onto disk,
> but I couldn't get "mt -f /dev/st0 fsf 1" on my linux to stop auto-rewinding
> right after, so I modified vmsbackup.c instead to write() the same thing.

Unices distinguish between auto-rewinding and non-rewinding variants of the
tape drives on the system.  For future reference, use

	mt -f /dev/nst0 fsf 1

to skip a file and *not* rewind afterwards.

								Rich Alderson



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