Copying to tape drive throws error Post: 302248769

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Operating Systems AIX Copying to tape drive throws error Post 302248769 by bakunin on Sunday 19th of October 2008 04:56:16 PM

10-19-2008

Registered User

Quote:

Originally Posted by vathsan

I ran the below command to copy files within a partition:

svr01:root:/sunfileserver> tar -cvf *

The option "-f" gets a filename as an argument - the file/device where tar is to store the archive. If you enter an asterisk there your declare every file/directory in your current directory (this is what "*" expands to) as a target, not a source. Chances are your never wrote to your tape drive at all. Do the following to write everything in directory /some/start/directory and below to your tape:

tar -cvf /dev/rmt0 /some/start/directory

Alternatively, make this directory your current directory and run tar using a shell glob:

cd /some/start/directory
tar -cvf /dev/rmt0 *

The difference is that in the first case the paths are stored absolutely, n the second case they are stored relatively. If you would list the contents of the archive you would get

/some/start/directory/fileA
/some/start/directory/fileB
/some/start/directory/dirA
/some/start/directory/dirA/fileC
... etc.

In the second case you would get

./fileA
./fileB
./dirA
./dirA/fileC
... etc.

If you intend to restore the archive always into the same directory use the first version with the absolute paths. If you intend to restore the archives into different hierarchies (maybe on another machine where /some/start/directory is named /another/dir) use the second variation.

I hope this helps.

bakunin

bakunin

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LEARN ABOUT OPENSOLARIS

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 5.11							    10 Mar 2000 							  tcopy(1)