Hi

I've just installed a 3584 for a customer and i noticed in the
installation guide that this library has a specific feature which allow
the arm to be controlled by all the tape devices (lun1 of the scsi path
device tape who controlled, but i supposed you knew that). This feature
don't exist in fact on Win32 but only on AIX system and i think this is
this feature which locks the device /dev/smc0...
To help you, this feature allow the control path to be moved from the
initial tape device (which can have maybe a problem) to the next tape
device.
I supposed IBM had installed this specific feature which must be a
driver or a specific daemon.

Sorry that i have not your entire answre :(

Preston de Guise wrote:

Hi all,

Never configured NetWorker on AIX before. I've got an AIX 5.2 server
(one partition in a P690) with NetWorker 7.0. It's to act as a storage
node to a Windows 2000 NetWorker server.

The tape library is an IBM 3583 (I think - whatever the rebadged ADIC
Scalar 100 is...) and I can see it and the tape drives with the "inquire
-l" command but the tape library itself can't be communicated with via
either sjisn or sjirdtag. The drives can be configured for standalone
access and work but the library can't be "opened" - I just get a "device
busy" response from any command - same for jbconfig.

In desperation yesterday I renumbered the SCSI id's for the library and
tapes (if nothing else it made it more logical) - and after this and an
lreset, lo & behold I could access it via sjisn/sjirdtag/jbconfig.

However inquire saw the library as a tape drive and saw three tape
drives instead of a library and two tape drives - no problem I thought
and had the AIX administrator re-run the device discovery/configuration
under AIX.

After that I lost access to the library again - same problem of device
busy.

I'd equate it to the library being faulty except it *worked* after the
SCSI remapping.

I'd equate it to the library door being open etc but it's not and the
library is properly on-line.

If I were on Windows 2000 (& NSR 6.x) I'd expect RSM were in the way.

It really seems to me that some AIX system process is holding open a
file handle to the tape library device (which I assume is /dev/smc0) and
thus blocking my access attempts. Can't see any reference to it though
and fuser was less than revealing.

Has anyone out there configured a library on AIX and hit this problem
before? Does anyone have any hints? FWIW this is running SAP but my
memory of SAP is that SAP won't access anything on the tape/library path
unless it's asked to...

Cheers,

-Preston.

--
Then the machines suddenly realised that by making a movie about the Matrix
they could divert the attention of the batteries for centuries.

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