Tar a folder to tape

[Raghuram Ollakal_1]

I need to get a folder from my server tar to a tape, how can I do this. what is the currect command. Other than the norman back up I naver tar any thing directoly to a tape. When I do a " ioscan -funC disk" I dont see any thig regarding the tape there. so I dot no how to mount the tape.

[Ken Hubnik_2]

tar cvf /dev/rmt/0m pathname

[Larry Reinhart · Accepted solution]

Good morning,

Normally you do not have to mount the tape drive. Do an ioscan -fnC tape to find out the tape device (usually /dev/rmt/0m)
You can then use the following tar command to
tar the folder to tape.
tar -cvf /dev/rmt/0m foldername
the -c option says to create the tar file
the -v says to be verbose
the -f /dev/rmt/0m says where to create it, here it is to tape.

Hope this helps.
Have a GREAT HP day!
Larry :-)

[Jeff Schussele]

Hi,

To determine tape device, do the following:

ioscan -fnC tape

Then do the command as above...although the default output for the tar command IS the tape drive - so you could just do

tar cvf /path/to/dir

HTH,
Jeff

[Sean OB_1]

You don't see your tape in the ioscan because you are asking to show disks only.

Try: "ioscan -fnC tape"


In any case you'll most likely need to run the following command.

tar -cvf /dev/rmt/0m /folder/to/tar

0m is the tape device file that you use to write to the tape.

the "cvf" options state create a new tar, show verbose output, and send the data to the file I'm listing next. In this case the file is "/dev/rmt/0m". The you put the directory, or folder, you want to tar.

HTH,

Sean

[Raghuram Ollakal_1]

Thanks for the help. One moer question do I need to rewind the tape or something before I run the tar command. If os whatis that going to be.

Thanks

[Darrell Allen]

Yes, you should rewind the tape:

mt -t /dev/rmt/0m rewind

Darrell

[Mihails Nikitins]

Please note that rewind issue depends on what device file you use (rewind or no-rewind).

In HP-UX, if device name does not contain 'n'(such as /dev/rmt/0m), tape rewinds after each command working with the device file. If device device contains 'n' (like /dev/rmt/0mn), the tape does not rewind and remains on the position writing has been finished. No-rewind device is a good option if you want to add files with more commands.

If you insert the tape in your drive, it positions on the beginning and no rewind is needed. I rewind the tape if I'm unsure about the previoius operations with the tape and want overwrite everything.

BR,
Mihails

[Elif Gius]

Hi

You can even tar a folder to a "tar depot" on your filesystem.
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tar -cvf tar_depot dir_to_save

tar -cvf /dev/rmt/0m file1 file2 file3 -> to save different files


tar -cv -C /etc -C /var/adm ->this will archive files from /etc and /var/adm to tape
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