Technical data
Remote (R) Commands
16.5 Remote Magnetic Tape and Remote CD-ROM (RMT/RCD)
• Create a communication proxy that associates the remote RMT client user
with the OpenVMS account ROOT on the RMT server host. For example:
TCPIP> add proxy root /HOST=host /REMOTE=user
See Section 16.3 for more information about communication proxies.
4. Make sure the
rsh
command works from the user’s account on the remote
UNIX host.
5. For the OpenVMS account ROOT, suppress SYS$LOGIN and LOGIN.COM
output by entering the following commands:
$ RMT_VERIFY = ’F$VERIFY(0)
...
$ IF (F$MODE() .NES. "OTHER") THEN $RMT_VERIFY = F$VERIFY(RMT_VERIFY)
16.5.2 Client Utilities
On the remote host, a user can use
rdump
to dump files to OpenVMS tapes, or
rrestore
to restore files from OpenVMS tapes. The functionality of
rdump
and
rrestore
depends entirely on the type of UNIX system you use and not on the
RMT service. For example, not all UNIX systems let you restore files selectively
using
rrestore
.
When you enter these remote dump and restore commands, you must specify
either a valid OpenVMS magnetic-tape device name, or a file name.
See the sections on
dump, rdump, restore
, and
rrestore
in your client system’s
documentation for details. Be careful about the order in which you specify options
on the command line.
Here is an example of an
rdump
command:
> /etc/rdump 0f lilac:mua0:/nomount/density=1600 /usr
In the example, the remote user requests to remotely dump the
/usr
file system
onto device
mua0:
on system
lilac
and specifies the
/nomount
qualifier and a
tape density of 1600 bits per inch.
You can specify the qualifiers described in Table 16–2 with magnetic-tape device
names.
Table 16–2 RMT Magtape Qualifiers
Qualifier Description
/[NO]ASSIST Specifies whether to use operator assistance to mount the
volume. The default is /NOASSIST.
/BLOCKSIZE=n Specifies the block size for magnetic tape volumes. The default
is 65534 bytes.
/CD Indicates that the remote device is a CD-ROM device.
/COMMENT="string" Specifies additional information included with the operator
request when the mount operation requires operator assistance
(/ASSIST). The comment appears in the OPCOM message for
the operator.
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Remote (R) Commands 16–5