HP StoreEver Ultrium Tape Drives - Manual (Page 14)

Common usage examples
Copy data from disk to tape
In this example, the library is mounted as /mnt/hp_msl. It contains an LTFS-formatted tape with
barcode KR1234L5.
The directory to be written to tape is located on the host machine, at /opt/photos and that
directory may contain a number of files, for example files from a digital camera.
To copy all of those files to tape, use the following command
cp /opt/photos /mnt/hp_msl/KR1234L5 -r
Copy data from tape to disk
To move the data from the previous example from tape to disk, at a location called /opt/
incoming_photos
, use the following command.
cp /mnt/hp_msl/KR1234L5/photos /opt/incoming_photos -r
Copy data from tape to tape
If the library or partition contains two tape drives, data may be copied from tape to tape.
Assume the library mounted at /mnt/hp_msl contains two tape drives, and two LTFS-formatted
cartridges, KR1234L5 and KR2468L5.
Use the following command to copy the 'photos' directory from KR1234L5 to the other tape.
cp /mnt/hp_msl/KR1234L4/photos /mnt/hp_msl/KR2468L5 -r
Unmounting and shutdown
The umount (or fusermount) command can be used to terminate the HP StoreOpen Automation
software, and unmount the library device. For example:
umount /mnt/hp_msl
or
umount /dev/sg5
NOTE: fusermount is only available on Linux.
IMPORTANT: The umount command will return immediately. However, cached data will continue
to be written to tape for a few minutes. If there are two tape drives, the cached writes may take
up to 5 minutes total. Do not power off or reset the tape library for at least 5 minutes after the
umount
command has been issued. Otherwise, the tapes may become inconsistent and potential
data loss may occur.
For similar reasons, wait at least 5 minutes after umount has returned before re-mounting the
library.
14 Using HP StoreOpen Automation