LTO3 tape drive not detected

Jeremy Chadwick freebsd at
Fri Jun 24 02:23:13 UTC 2011

On Fri, Jun 24, 2011 at 10:45:10AM +0930, Daniel O'Connor wrote:
> On 24/06/2011, at 6:17, Joe in MPLS wrote:
> > This was originally posted on the freebsd-questions list. It was suggested that I post it here:
> > 
> > I have FreeBSD 8.2-RELEASE running on an HP DL360 G5. I recently added an (HP branded) LSI Logic single channel SCSI 320 card and attached an HP Ultrium 920 LTO3 tape drive.
> > 
> > The system sees the SCSI controller as mpt0, and it seems to know there's something at SCSI ID 4, but I get an "AutoSense Failed" for hba/id/lun 0:4:0 at boot and subsequent camcontrol rescans.
> > 
> > I checked the supported hardware doc for the release but it doesn't get very specific about tape drives. This is my first experience with LTO3 tape. I was hoping that I'd automagically get a /dev/sa0 device like I always did with my old DLT drives but it wasn't to be this time.
> > 
> > Is there a way to make this drive work?
> I'd check the cabling etc..
> I have an LTO2 drive that "Just works (tm)".
> Can you boot a Linux ISO and see if that finds it?

I would recommend you two compare comparing DIP switch or jumper
settings, as well as firmware versions.  Many tape drives have
"compatibility" switches, and firmware versions play a huge role.

SCSI card settings (within the SCSI BIOS) would also play a large role

| Jeremy Chadwick                                jdc at |
| Parodius Networking              |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |

More information about the freebsd-stable mailing list