> From: Ian Turner > Sent: 09 May 2006 16:54 > > On Tuesday 09 May 2006 11:06, Jon LaBadie wrote: > > > My autoloader is on /dev/st0 and tape are defined on /dev/nst0 > > > > I don't think so. > > st0 and nst0 are the "same" device handled differenly on close. > > The changer is probably on /dev/sg0 or /dev/sg1.
Yup - I would expect the device to use to talk to the changer to be of the form /dev/sgN. There's a pair of useful utilities that come as part of the mtx RPM - loaderinfo and tapeinfo. If you use these with your sg devices it will soon become clear which one is your changer. Even if you use loaderinfo on a device which points at a tape drive) or even a disk drive) it's pretty obvious what it is. Here's output from one of my machines ... # loaderinfo -f /dev/sg9 Product Type: Disk Drive Vendor ID: 'COMPAQ ' Product ID: 'BD300884C2 ' Revision: 'HPB7' Attached Changer: No Bar Code Reader: No EAAP: No Transport Geometry Descriptor Page: No Device Configuration Page: No # loaderinfo -f /dev/sg10 Product Type: Medium Changer Vendor ID: 'HP ' Product ID: 'MSL6000 Series ' Revision: '0423' Attached Changer: No Bar Code Reader: Yes EAAP: Yes Number of Medium Transport Elements: 1 Number of Storage Elements: 58 Number of Import/Export Element Elements: 2 Number of Data Transfer Elements: 2 Transport Geometry Descriptor Page: Yes Invertable: No Device Configuration Page: Yes Can Transfer: Yes # loaderinfo -f /dev/sg11 Product Type: Tape Drive Vendor ID: 'HP ' Product ID: 'Ultrium 2-SCSI ' Revision: 'F43W' Attached Changer: No Bar Code Reader: No EAAP: No Transport Geometry Descriptor Page: No Device Configuration Page: No Paul
