LTO-2 tape device is very slow?

Tom Haws trh at
Tue Dec 14 22:25:01 UTC 2004

I'm having problems adding an Exabyte Magnum LTO-2 tape device to my RHL 
9 machine.  I know that's a different OS, so thius question should go in 
the shrike lists, but it's close enough to Fedora that I thought I might 
get some answers here, and the shrike lists are just about dead now.  
Red Hat announced the end of RHL 9 2 months after I installed a 
production server on it...  arrrghh...

Anyway, after I add the device, it shows up fine in /proc/scsi/sci, and 
I can write to it, but it is extremely slow.  I got about 30MB written 
in 5 minutes!  Has anyone else had any experience with LTO-2 devices on 
Fedora or RHL 9 systems, and is there anything I can do to recreate 
device files or anything to speed it up?

Also, do you know if I do a "mknod -m 666 /dev/st0 c 9 0" with the tape 
drive hooked up, does it do anything different than if there wasn't one 
installed?  Like read the status bits on the drive to tell what it's 
capabilities are?


Tom Haws               Manager, Systems Administration
trh at      Timberline Forest Inventory Consultants
Tel: (250) 562-2628    1579 9th Ave, Prince George, B.C. Canada V2L 3R8
Fax: (250) 562-6942

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