Download lin_tape and lin_taped

Download the latest lin_tape source rpm and lin_taped binary rpm for your Linux distribution. In this article we are working with RHEL/CentOS and we have the following files downloaded

sh# ls -1 lin_tape*
lin_tape-1.74.0-1.src.rpm
lin_taped-1.74.0-rhel6.x86_64.rpm

Build lin_tape source

As superuser rebuild the lin_tape source rpm

rpmbuild --rebuild lin_tape-1.74.0-1.src.rpm

The above rpmbuild command would compile the source on the system and create a binary RPM. The location of this binary RPM can be got from the rpmbuild output. Look for a line similar to the below line

Wrote: /root/rpmbuild/RPMS/x86_64/lin_tape-1.74.0-1.x86_64.rpm

Install lin_tape and lin_taped

As superuser, install the lin_tape binary rpm and the lin_taped binary rpm

rpm -i /root/rpmbuild/RPMS/x86_64/lin_tape-1.74.0-1.x86_64.rpm
rpm -i lin_taped-1.74.0-rhel6.x86_64.rpm

Update: Depending on whether you have x86 compatibility libraries installed on x86_64 systems, you may get the following error during installation

Starting lin_tape: lin_tape loaded
Starting lin_tape: /etc/init.d/lin_tape: /usr/bin/lin_taped: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

In such a case install the glibc.i386 package as shown below

yum install glibc.i686

Configure lin_tape service

During the installation the lin_tape service is also installed and configured to start for runlevel 2,3 and 5 as seen in the chkconfig below

/sbin/chkconfig --list lin_tape lin_tape 0:off 1:off 2:on 3:on 4:off 5:on 6:off

The lin_tape service can also be manually started or stopped by the following commands

service lin_tape start
service lin_tape stop

Accessing the tape and changer devices

After the lin_tape service is started, the tape devices will be accessed using /dev/IBMtape[x] rather than /dev/st[x] as seen below. Most utilities from IBM require that the lin_tape service is started.

# ls -l /dev/IBM*
crw-rw-rw-. 1 root root 248, 2048 Nov 20 01:07 /dev/IBMchanger0
crw-r--r--. 1 root root 248, 3071 Nov 20 00:45 /dev/IBMtape
crw-rw-rw-. 1 root root 248,    0 Nov 20 01:06 /dev/IBMtape0
crw-rw-rw-. 1 root root 248, 1024 Nov 20 01:06 /dev/IBMtape0n
crw-rw-rw-. 1 root root 248,    1 Nov 20 01:07 /dev/IBMtape1
crw-rw-rw-. 1 root root 248, 1025 Nov 20 01:07 /dev/IBMtape1n

The difference between the IBMtape0 and the IBMtape0n is that the latter is the no rewind device path. It is similar to /dev/st0 and /dev/nst0 where nst0 is the no rewind device path. IBMchanger[x] are the changer device paths.