I already use the mtlib command to look at things.  I guess I just need to
learn more about it and try put some of them in a script to check for
problems periodically.  Thanks to everyone for their help.

> -----Original Message-----
> From: Richard Sims [SMTP:rbs AT BU DOT EDU]
> Sent: Friday, January 22, 1999 3:55 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: 3494 volume "inaccessible"
>
> >Can you tell me what monitor will watch the library?  The only way I know
> to
> >find the "int req" conditions is to look at the console at the 3494 or
> the
> >panel by the I/O convenience slot.
>
> Sure...  Here at BU we have an AIX cluster which is monitored by a package
> that I wrote which, among other things, looks at the 3494 using the system
> calls documented in the SCSI ... Device Drivers manual (GC35-0154), which
> is
> available from the storsys FTP site.  But you don't have to do programming
> to
> monitor, if you don't want to, in that the mtlib command is basically an
> interface to those system calls.  In particular, you would issue the
> 'mtlib -l /dev/lmcp0 -qL' (query library) command and hope to find the
> "state"
> line say "Automated Operational State".  But another is "Intervention
> Required".  (The full list is in the /usr/include/sys/mtlibio.h header
> file,
> which is installed along with the atldd package that gives you the mtlib
> command, lmcpd, etc.)  You could for now rig a simple monitoring script
> based
> upon the mtlib command, and as a later adventure try some programming.
>
> Doing monitoring gives you a heightened sense of control of what's going
> on in
> a complex, and makes an administrator feel much less a victim of the
> events
> that occur in the wondrous world of data processing.
>
>     Richard Sims, BU