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Full Discussion: multi tape option in tar cmd
Operating Systems Linux Red Hat multi tape option in tar cmd Post 302566443 by galanom on Thursday 20th of October 2011 11:09:17 AM
Old 10-20-2011
Haven't thought of using dd to tell the truth.
But that's really tough to understand.

Can I propose
Code:
dd if=bigfile of=/dev/tape bs=600GB count=1 skip=0

and increase skip by one each iteration...

While restore:

Code:
dd if=/dev/tape of=restore bs=600GB count=1 seek=0

and increase seek by one

Of course instead of bs=600GB you can simply bs=1MB but then seek or skip will be by n*600000
This User Gave Thanks to galanom For This Post:
nithyanandan
 

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LEARN ABOUT SUNOS

tcopy

tcopy(1)							   User Commands							  tcopy(1)

NAME

       tcopy - copy a magnetic tape

SYNOPSIS

       tcopy source [destination]

DESCRIPTION

       The  tcopy  utility copies the magnetic tape mounted on the tape drive specified by the source argument. The only assumption made about the
       contents of a tape is that there are two tape marks at the end.

       When only a source drive is specified, tcopy scans the tape, and displays information about the sizes of records and tape files.  If a des-
       tination  is  specified,  tcopy makes a copies the source tape onto the destination tape, with blocking preserved. As it copies, tcopy pro-
       duces the same output as it does when only scanning a tape.

       The tcopy utility requires the use of Berkeley-compatible device names. For example,

       example% tcopy /dev/rmt/1b /dev/rmt/2b

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mt(1), ioctl(2), attributes(5)

NOTES

       tcopy will only run on systems supporting an associated set of  ioctl(2) requests.

SunOS 5.10							    10 Mar 2000 							  tcopy(1)
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