On Dec 21, 2005, at 7:53 AM, Tom Callahan wrote:
Very strange.... How many drives are in your robot? The changer itself
is not really a device that would be seen by a scsi lun probe, you
should see three luns if you have 2 drives for instance.
Just the one drive, 8 slots for tapes - it's an ADIC FastStor2
(http://www.adic.com/ibeCCtpItmDspRte.jsp?section=10030&item=121900#2)
We have an HP MSL5026 here, along with a 5052, and with the 5026, I
see
the robot as /dev/sg1 and the drives individually as /dev/sg2, and
sg3.
The 5052 is the same way, but two more drives as /dev/sg4 and sg5
It's been suggested on the mtx-general list that some robots (eg:
mine :-) can appear as the same device-id but a different LUN. To get
the different sg devices, I expect Matt & Nigel (see the thread) are
correct, and I have to have "options scsi_mod max_luns=32" (or some
other number >1) in /etc/modprobe.conf. The only devices I can see
are all LUN=0...
I'm just waiting until I have a non-live server before I start
messing with the SCSI subsystem parameters, since everything is SCSI
on the machine, and I don't want to inadvertently do something which
changes the SCSI mappings...
What brand/model of robot are you using, and if possible, can you give
me the output of lssg (part of fibreutils package) or /proc/scsi/
scsi??
I don't have lssg, but /proc/scsi/scsi is:
[root@www4 ~]$ cat /proc/scsi/scsi
Attached devices:
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: IBM-ESXS Model: MAP3735NC FN Rev: C101
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: IBM-ESXS Model: VPR073C3-ETS10FN Rev: S370
Type: Direct-Access ANSI SCSI revision: 04
Host: scsi1 Channel: 00 Id: 08 Lun: 00
Vendor: IBM Model: 39M6750a S320 0 Rev: 1
Type: Processor ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: SERVERAID Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 15 Lun: 00
Vendor: IBM Model: SERVERAID Rev: 1.00
Type: Processor ANSI SCSI revision: 02
Host: scsi2 Channel: 01 Id: 05 Lun: 00
Vendor: HP Model: Ultrium 3-SCSI Rev: G37B
Type: Sequential-Access ANSI SCSI revision: 03
Host: scsi2 Channel: 02 Id: 15 Lun: 00
Vendor: IBM Model: EXP400 S320 Rev: D110
Type: Processor ANSI SCSI revision: 03
I'm pretty sure this should work out of the box. I've never had
problems
otherwise.....
[sigh] Whenever a colleague has a bug in software, I walk over and it
magically fixes itself. When I come into contact with hardware,
anything that can go wrong, does. Maybe the universe is giving me a
not-so-subtle hint - stick to software :-)
Thanks for the help :-)
ATB,
Simon
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