From MAILER-DAEMON Thu May 13 21:30:29 1999 Date: Thu, 13 May 1999 21:30:29 -0400 (CST) From: Mail System Internal Data Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA X-IMAP: 0926645429 0000000000 Status: RO This text is part of the internal format of your mail folder, and is not a real message. It is created automatically by the mail system software. If deleted, important folder data will be lost, and it will be re-created with the data reset to initial values. From sram@profc.udec.cl Thu May 13 15:59:07 1999 -0400 Status: R X-Status: X-Keywords: Received: from mail11.digital.com (mail11.digital.com [192.208.46.10]) by toqui.profc.udec.cl (8.9.2/8.9.2) with ESMTP id PAA06071 for ; Thu, 13 May 1999 15:58:45 -0400 (CST) From: alan@nabeth.cxo.dec.com Received: from nabeth.cxo.dec.com (nabeth.cxo.dec.com [16.82.16.67]) by mail11.digital.com (8.9.2/8.9.2/WV2.0g) with SMTP id QAA28736 for ; Thu, 13 May 1999 16:02:00 -0400 (EDT) Received: by nabeth.cxo.dec.com (5.65/fma-100391); id AA17252; Thu, 13 May 1999 14:01:30 -0600 Message-Id: <9905132001.AA17252@nabeth.cxo.dec.com> To: Salvador Ramirez Subject: Re: List of installed hardware from OS? In-Reply-To: Your message of "Thu, 13 May 99 15:33:40 EDT." Date: Thu, 13 May 99 14:01:24 -0600 X-Mts: smtp There's nothing included in the base system that provides all the information you might like to have. You can see what devices were configured when the system booted by looking at /var/adm/messages or formatting the error log to get the boot messages (record type 300). This may not be all the devices on the system, since the kernel has to be configured to recognize adapters and controllers. Not all the devices may have special files, so you can't rely on those as a single source for the information. There is a programming interface to get the kernel's view of the configuration; getsysinfo. You can use this to get the bus structures, then controllers and finally devices. It doesn't provide much detail, but you can get a pretty good view of what the system sees using it. Particular to the SCSI driver, you can use the scu(8) command to see what is on each bus. If a particular bus can be changed without shutting down the system (HSZ array controllers, Storage- Works shelves), you can even scan a given to see what new devices are present. The SCSI and RAID manual pages will explain how devices are named. The short version is: Disks /dev/[r]rz[a-h]#[a-h] The leading [r] of the name distinguishes raw device from block devices. The "rz" indicates a SCSI disk. The first [a-h] is most often used for array controller that can present multiple logical units for each target-id. The correspondence is: a = LUN 0 b = LUN 1 c = LUN 2 and so on You'll often see the LUN letter left off for LUN 0 devices. The # is the unit number and found from (bus * 8) + target-id. Bus numbering starts at zero. The final [a-h] is the partition letter and nothing to do with SCSI addressing. Examples: /dev/rrz5c, Bus 0, target 5, LUN 0, partition C /dev/rrza5c, Bus 0, target 5, LUN 0, partition C (these happen to be the same) /dev/rrzh16c, Bus 2, target 0, LUN 7, partition C Tapes. /dev/rmt#{a,h,l,m} Digital UNIX (DEC OSF/1, Tru64 UNIX) supports two tape drivers which use the same naming convention for device names; SCSI and TMSCP. Tapes names are assigned sequentially in order of creation. The convention to create names with MAKEDEV is much the same as for disks: tz#, where # = bus * 8 + target-id As far as I've been able to tell MAKEDEV can't create tape special files for non-LUN 0 devices. However, scsimgr on V4 (which is run at startup) will. The set of letters after the unit number indicates the density. The "tz" manual page has all the letter/density translations. Media changers. The CLC Media Changer driver uses the convention: /dev/mc#[a-h] The # is the unit number just as for disks. The trailing [a-h] indicates the logical unit. For LUN 0 devices you can leave off the letter. Optical devices. The CLC Optical driver uses the same convention as for disks but uses "op" instead of "rz". There are no drivers for other devices available from Compaq.