Questions re: the chg-scsi documentation
I was going through those pages a bit this morning and had a few questions..; Firstly, at the Configuration Notes it says I should be able to get the changer value with modprobe sg. That command returns nothing; which doesn't seem right? But if I do a modprobe sg -l then I get: /lib/modules/2.6.8-24-default/kernel/drivers/scsi/sg.ko So have I got the right module loaded for sg devices? Secondly, what does -status do? what is the param you have to pass it? Thirdly, around the changerident section, it lists Faststor DLT which is what I run. It's listed as an other value. Does that mean chg-scsi supports my drive w/o the changerident argument? Whenever I try to add it, chg-scsi just gets cross at me. Thanks for any help. I'm getting so close to this tape drive working that I'm almost sick; chg-scsi will now pick a tape and load it! :} But it still segfaults on -scan, and it will eject the tape but doesn't know how to unload it (I have to follow up with mtx -f /dev/sg1 unload) Good weekend to everyone..! __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Does Attached Changer matter in mtx inquiry?
Here's what I get [EMAIL PROTECTED]:~ sudo /usr/sbin/mtx -f /dev/sg0 inquiry Product Type: Tape Drive Vendor ID: 'QUANTUM ' Product ID: 'DLT8000 ' Revision: '0232' Attached Changer: No [EMAIL PROTECTED]:~ sudo /usr/sbin/mtx -f /dev/sg1 inquiry Product Type: Medium Changer Vendor ID: 'ADIC' Product ID: 'FastStor DLT' Revision: '0119' Attached Changer: No [EMAIL PROTECTED]:~ Does it matter to chg-scsi that it says 'no changer' like that? Thanks for any help. Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs
Re: Does Attached Changer matter in mtx inquiry?
No. Attached Changer in this context I believe means SCSI attachment...something very different from physical attachment. In any case I've only seen one changer that reported as attached. And IIRC it definitely had ot do with it's SCSI bus behaviour. So it's not saying no changer...it's saying it behaves in such and such a way when SCSI commands are sent to it (it detaches from the SCSI bus)
Re: Tape drive device files
On Tue, 2005-08-09 at 11:14 -0400, Matt Hyclak wrote: On Tue, Aug 09, 2005 at 10:51:51AM -0400, LaValley, Brian E enlightened us: Can someone point me to a good educational site for /dev information? I have attached a tape drive to my machine, but I can't find the special files. I know it should be nst* but they don't exist. Do they have to be created manually? You will probably want to let us know what OS/Distro you're running to give us a better idea where to point you. Since you're looking for /dev/nst*, I'm going to assume you're Linux, like I am. If not, ignore the following at give the list more info, as Matt suggests. And not only Linux, but one with udev or equiv. They aren't created manually. If your kernel is compiled with mag tape support (most are, AFAIK) and if the module is loaded (mt, I think) and if your tape drive is one Linux supports (every SCSI I've tried and at least one USB, in my experience) and if the drive is connected properly, the kernel will find it at boot and udev will create /dev/st0, /dev/nst0, etc. I assume you're running udev because otherwise the device files would very likely be there, but any attempt to use them will result in an error. Is there a man mt? If not, that's an indication that the system doesn't support tape -- it didn't install the magtape control program. -- Glenn English [EMAIL PROTECTED]
Re: Does Attached Changer matter in mtx inquiry?
On Saturday 13 August 2005 16:29, Marcus wrote: Here's what I get [EMAIL PROTECTED]:~ sudo /usr/sbin/mtx -f /dev/sg0 inquiry Product Type: Tape Drive Vendor ID: 'QUANTUM ' Product ID: 'DLT8000 ' Revision: '0232' Attached Changer: No [EMAIL PROTECTED]:~ sudo /usr/sbin/mtx -f /dev/sg1 inquiry Product Type: Medium Changer Vendor ID: 'ADIC' Product ID: 'FastStor DLT' Revision: '0119' Attached Changer: No [EMAIL PROTECTED]:~ Does it matter to chg-scsi that it says 'no changer' like that? Thanks for any help. I don't believe so. I think, but could be wrong, that when mtx reports an attached changer, it may be at other than the base LUN=0. If the devices are seperated by their device address on the scsi bus, as opposed to being at the same address but a different LUN, with the latter being where mtx picks up on the Attached changer bits. But, don't take my word for it, go study the manpages for mtx for the final word. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) 99.35% setiathome rank, not too shabby for a WV hillbilly Yahoo.com and AOL/TW attorneys please note, additions to the above message by Gene Heskett are: Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
RE: Questions re: the chg-scsi documentation
I had the core dump problem with chg-scsi as well. I am on NetBSD/i386 V2.0.2. I did a couple of things, of the two I am not sure if both were required but: I am running a HP SureStore DAT24x6 changer. The first was: I set my changerident to: C1553A. (The closest value defined in chg-scsi to my changer/drive). I see FastStor DLT is defined. Have you tried that in your chg-scsi.conf ? I looked through changer-src\sense.c and I see the following special entries for changers. ADIC DAT AutoChanger L500 ATL HP 1553A HP 1537A Tandberg TDS 1420 DLT8000 DLT7000 AIT VLS DLT Library AIT VLS SDX Library Exabyte 85058 Exabyte 10e Library Exabyte 210 Library Exabyte 230D Library Spectra Treefrog Library It would appear that the sense.c structure is defining inquiry results and defining how to interpret them. Your changer may require some entries in there. Here is the chg-scsi.conf that I use that works for me on my HP changer. My changer device on NetBSD is /dev/ch0. dev /dev/nrst0 is my no-rewind tape drive device, scsitapedev /dev/rst0 I added so that my tapestatus /usr/pkg/etc/amanda/st0-status file gets update with error status values after a run. My changer did not seem to require the eject value to be set so I left it at 0. scsitapedev may also be key as I think it changes how it talks to the drive/changer. With debug 9:0 I get lots of detail in chg-scsi* files I find in /tmp/amanda. number_configs 1 eject 0 # Tapedrives need an eject command sleep 5 # Seconds to wait until the tape gets ready cleanmax50 # How many times could a cleaning tape get used changeridentC1553A changerdev /dev/ch0 debug 9:0 # # Next comes the data for drive 0 # config 0 drivenum0 dev /dev/nrst0 # the device that is used for the tapedrive 0 scsitapedev /dev/rst0 startuse0 # The slots associated with the drive 0 enduse 4 # statfile/usr/pkg/etc/amanda/st0-slot # The file where the actual slot is stored cleancart 5 # the slot where the cleaningcartridge for drive 0 is located cleanfile /usr/pkg/etc/amanda/st0-clean # The file where the cleanings are recorded usagecount /usr/pkg/etc/amanda/totaltime tapestatus /usr/pkg/etc/amanda/st0-status # This is the end There is a command documented as: chg-scsi -genconf. What does that do in your case ? I have never tried it on my machine. Can you make some of those available after performing some of the commands that work and ones that don't ? Under chgscsi.txt in the docs directory of 2.4.5 there are lots of notes on chg-scsi. Scott... Scott R. Burns NETCON Technologies Inc. Suite 135 - 4474 Blakie Road London, Ontario, Canada N6L 1G7 Voice: +1.519.652.0401 Fax: +1.519.652.9275 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Marcus Sent: Saturday, August 13, 2005 2:34 PM To: amanda-users@amanda.org Subject: Questions re: the chg-scsi documentation I was going through those pages a bit this morning and had a few questions..; Firstly, at the Configuration Notes it says I should be able to get the changer value with modprobe sg. That command returns nothing; which doesn't seem right? But if I do a modprobe sg -l then I get: /lib/modules/2.6.8-24-default/kernel/drivers/scsi/sg.ko So have I got the right module loaded for sg devices? Secondly, what does -status do? what is the param you have to pass it? Thirdly, around the changerident section, it lists Faststor DLT which is what I run. It's listed as an other value. Does that mean chg-scsi supports my drive w/o the changerident argument? Whenever I try to add it, chg-scsi just gets cross at me. Thanks for any help. I'm getting so close to this tape drive working that I'm almost sick; chg-scsi will now pick a tape and load it! :} But it still segfaults on -scan, and it will eject the tape but doesn't know how to unload it (I have to follow up with mtx -f /dev/sg1 unload) Good weekend to everyone..! __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
