Make sure you have the kernel module for it. I don't know details, but I think the big picture is this: the st modules that controls tapes uses the generic scsi module (scsi_mod) which in turn uses a module that can handle a specific SCSI controller.
For example, the aic7xxx module handles many SCSI Adaptec controllers. If this is the case try first:
lsmod | grep aic
You should see the aic7xxx module and scsi_mod, the generic scsi module that uses it.
If you have this module, then unload it (rmmod aic7xxx) and then load it again (insmod aic7xxx), watching kernel messages (usually /var/log/messages). You may find clues about what is going on.
Also check the wires (do you have a terminator on the SCSI chain?).
Cheers, -Iulian
Douglas Phillipson wrote:
I recently posted a question concerning attaching a DLT tape drive to a Dell 2650 running RH AS 2.1. The eventual solution was to install the OS with the tape drive attached because I couldn't get it to be recognized by adding it after the install.
In a related situation I've backed up the server with dump and have a DLT with all the partitions backed up. I then proceeded to rm -r /usr and attempt to restore the /usr partition. (server is not on line yet) I found that when booting the RH AS 2.1 CD and selecting the "recovery" mode, it nicely mounts the partitions for me under /mnt/sysimage but I have no access to the tape drive as the device is missing (/dev/st0). I've tried "insmod st" and "mknod /dev/st0 c 9 0" and I get no errors but the tape device doesn't seem to be there. How do those of you running servers do bare metal backup and restore?
I also tried booting a SuSE CD and I can see the tape drive with it but I can't mount the darn partitions with "mount -t ext3 /dev/sda7 /mnt" The device is there but it says "not a proper block device". I've also tried "timos", a nice version of Linux for recovery purposes and it recognizes the RAID and SCSI controllers and the DLT tape but consistantly hangs during the boot process so I never get a command prompt.
I can't seem to get there from here... Any help is greatly appreciated.
Perplexed
Doug P
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