how to backup and append more files in remote tape drive

From: Star Kitty (starkitty7060@yahoo.com)
Date: Mon May 19 2003 - 01:08:22 EDT


Dear Sun Managers,

This is a general enquiry.

I would like to know how can I append my data into a
remote tape drive.

To backup the first files, I had tried...

# tar cvfb - 20 file1 | rsh host dd of=/dev/rmt/0
obs=20b

as per man tar and no problem.

However, if I want to append file2 into the tape with
the following command....

# tar rvfb - 20 file2 | rsh host dd of=/dev/rmt/0
obs=20b

I'm not allow to do that and is getting the following
error.

tar: can only create standard output archives.
0+0 records in
0+0 records out

I would want to know what could be wrong on the second
command? Also, is there is any other way to append
more data into the remote tape and what is the best
method to backup and append files where the tape drive
is at the remote host.

I had searched thru all the archive but couldn't find
any similiar case reported. Pls assist and thanks in
advance.

Regards,
Raymond

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