This page coordinates the development of a Linux tape driver for the OnStream SC-30/SC-50/DI-30/FW-30/USB-30 devices. The target, osst, is a kernel driver that provides an st-compatible interface to the userspace. The driver is put under GPL and submitted to the kernel folks for inclusion into the mainstream kernel.
There is an IDE tape driver in the kernel with support for the OnStream DI-30, which uses the same basic format for the tapes defined by the ADR spec. It was written by Gadi Oxman. The OnStream functionality in ide-tape has not been maintained though, so its use is not recommended.
This project is a joint effort of indiviuals that want to get their OnStream ADR SCSI / IDE / IEEE1394 / USB tape drive to run with Linux and any Backup Software available on Linux. The primary author and maintainer is Willem Riede. We were supported by OnStream and SuSE. Unfortunately OnStream has gone bankrupt and the development has now moved to SourceForge.
The driver currently supports 2.6.x and 2.4.y kernels. A 2.2 version is also available, but has not been updated with some of the latest fixes. Osst comes standard with all recent kernels from kernel.org or your favorite distribution.
Download the latest version (which may not yet be merged at kernel.org) here.
DISCLAIMER: If you test it, you do it on your own risk. If the driver crashes your kernel (unlikely, but possible) and you loose important data, you are on your own. If you use the driver to backup your data and need to restore it later, but fail, you are on your own again. If something bad happens to you because of this driver, don't even try to make somebody responsible for this. There is no warranty of whatever kind. In short: The GNU GPL applies.
#ls /sys/class/osst/osst0 ADR_rev BOT_frame capacity dev device driver EOD_frame file_count media_version
A more comprehensive history of the osst drivers can be found here.
A mailing list is there to provide an easy way for the users and developers to communicate. The name is email@example.com, and it's a mailman list. To subscribe visit the list's web page at osst-users-request.
You need to use a kernel that has generic SCSI support enabled (scsi_mod is the name of the module) and with osst compiled and installed. Device nodes need to exist (if they don't, use MAKEDEV or mknod):
crw-rw---- 1 root disk 206, 0 Sep 15 09:40 /dev/osst0 crw-rw---- 1 root disk 206, 1 Sep 15 09:40 /dev/osst1 crw-rw-rw- 1 root disk 206, 128 Sep 15 09:40 /dev/nosst0 crw-rw---- 1 root disk 206, 129 Sep 15 09:40 /dev/nosst1
To have osst be loaded automatically when you refer to any of the devices, add this line to /etc/modules.conf:
alias char-major-206 osst
On top of the requirements for the SC model, you need to use ide-scsi with the device. You'll want to tell the kernel to do so when you boot, using hdx=ide-scsi (where you substitute the right device letter for the x) to the grub or lilo configuration.
On top of the requirements for the SC model, you need to activate the IEEE1394 subsystem, and load the sbp2 driver.
On top of the requirements for the SC model, you need to activate the USB subsystem, and load the usb-storage driver. Furthermore, it needs to be compiled with support for the FreeCom USB-Atapi converter CONFIG_USB_STORAGE_FREECOM.
For the joint development, a CVS repository is available on SourceForge. It handles the driver sources and also the web pages.
The repository contains the modules (=directories) WebPages, Driver, Docu, Firmware and Misc.
In Driver you find osst itself and a bunch of files used in its original creation, which are now obsolete. Three branches exist, for the 2.2 (OSST22), 2.4 (LINUX-2-4) and 2.6 kernel (HEAD).
The Docu directory contains the docu from OnStream, namely the ADR spec as a PDF. More documentation will go here.
The Firmware directory contains DOS and Wind*ws programs to update the firmware of your OnStream tape device.
CVS read access is available through browsing. If you have some contributions, the diffs (use diff -u) should be sent to the mailing list and someone will have a look and check it into the CVS. If you are contributing a lot, it will be easier to give you read-write access to the repository, so ask to join as a developer.