On Tue, May 08, 2001 at 09:30:32PM -0400, Ed Centanni wrote:
> Ide ATAPI tape drives work with Linux using scsi-emulation -- forget
> about using the ide-tape module. Most kernels out of the box do not
> have scsi-emulation set up since it conflicts with other tape drive
> support. You have to configure and compile a kernel with a particular
> group of seemingly un-related things turned on and others turned off.
> It does work and work well *IF* you get it right.
>
> Thanks to a posting by Timothy Moore (timothymoore@bigfoot.com) that was
> discovered and brought to my attention by Bob Snibbe and whose web link
> got permanently lost in my vast underground caverns, I present to you my
> abbreviated version of Tim's ATAPI tape drive howto:
>
> 1. Kernel configuration: Under BLOCK DEVICES select SCSI emulation
> support( if you manually edit .config or check it after configuration it
> will be called CONFIG_BLK_DEV_IDESCSI). Under SCSI support (yes I know
> it's NOT a SCSI device! The kernel will see it as one though) select
> SCSI tape support (CONFIG_SCSI, CONFIG_CHR_DEV_ST) and *deselect*
> IDE/ATAPI tape support(CONFIG_BLK_DEV_IDETAPE).
>
> 2. rebuild kernel, install, lilo etc....
>
> 3. If successful you'll see at boot up something like:
> kernel: hdb: YADA YADA ATAPI Tape drive
> ...
> kernel: SCSI host adapter emulation for IDE ATAPI devices
> ...
> kernel: Detected scsi tape st0 at scsi1, channel 0, id0 lun 0.
>
> You'll use /dev/st0? and /dev/nst0? . Most people link /dev/tape to the
> device (ln -s /dev/st0 /dev/tape)
>
> To test, put a tape in and type "mtape -f /dev/tape status" or use the
> tar command save and read back a small file.
>
> Paul: This might be a good thing to put on our FAQ page.
> Ed.
Now that you mention it, I do recall something about IDE tapes and SCSI
emulation. You're right; I'll box this up and make an FAQ out of it.
Paul
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