On Fri, 11 Jul 2008 16:50:31 +0000, Manuel Ortiz wrote:

> I have an old server I will be migrating but first I need to get a good
> backup of it. It's running ...
>
> Red Hat Linux release 7.1 (Seawolf)
> Kernel 2.4.2-2smp on a 2-processor i686
>
> I have installed a qlogic scsi card and an HP DLT autochanger. I can
> see the drive as /dev/st1 but I can't see the autochanger with mtx. Log
> files tell me it should be /dev/sg18 but when I look at ls -l /dev/sg*
> it stops at sg15, so when I try to access it with ...
>
> mtx -f /dev/sg18 status
>
> I get
>
> mtx: cannot open SCSI device '/dev/sg18' - No such file or directory
>
> I can provide more info if needed. Any help would be appreciated.
>
> Manuel

You are dealing with a bronze age kernel, chances are there is no driver
for the autochanger. If I were you I'd just do an rsync to another machine
instead of trying to hook a piece of modern equipment to that one.

You could also try installing the latest 2.4 kernel, 2.4.36, assuming that
you can build it on a system that old, I don't know if you can.