That's essentially the same things I had to do, the timeout and the changing of
the wording returned from mtx. The only other thing I had to change was the
case test at line that read:
[$firstslot-$lastslot])
load=$1
;;
Because of the wording of the [test]), the highest slot number you can have
would be 9. Since I have 30, I had to change it to the below:
$[${whichslot}])
if [ $whichslot -gt $lastslot ] || [ $whichslot -lt $firstslot ]; then
echo "0 Slot $whichslot is out of range ($firstslot - $lastslot)"
exit 1
else
loadslot=$whichslot
fi
;;
This was because if your $lastslot > 9, the test doesn't work right. For me,
$lastslot is 30, so the test was saying " [1-30]) which is "1-3 _or_ 0" in
shell pattern matching. It took me forever to notice this, and I pulled some
hair out wondering why I couldn't load a tape higher than slot 3.
Thanks...
On Thu, 01 Feb 2001, Doug Munsinger wrote:
> Jason -
>
> having just been through "changer hell" I'm copying some mail I just sent
> to Joe Rhett re: chg-zd-mtx and barcodes -
> MAYBE it will help resolve what you are going through now.
>
> I fought with chg-scsi and chg-zd-mtx for about a week before dropping back
> and getting chg-manual to fully work first.
>
> Here's what I just finished:
> Hope this helps.
>
> --doug
>
> ___________________________________________________________________________
>
>
> Joe -
>
> I downloaded the improved mtx script from the link you gave in this post -
> MUCH THANKS as the site also gave specific instructions for placing
> at <amanda-src>/client-src/chg-zd-mtx.sh.in
> and then run configure. This came very close to working as is.
>
> The timing worked well as I was already re-installing 2.4.2p1 upgrades
> anyway...
>
> I found two flaws in the code for my specific tape drive and changer.
> I have an Ecrix VXA autopak library with a single Ecrix VXA tape unit
> installed - with a barcode reader.
>
> I managed to get chg-manual running consistently and getting good backups
> first, which let me know that the tape drive and amanda were doing well,
> before attempting for a second time to get the changer to cooperate.
> I also installed mtx 1.2.10 and tested and verified this would work... So
> at least I could get an e-mail that the tape needed changing and then log
> in and accomplish that from home...
>
> What I changed to make the chg-zd-mtx script work was to add a TIMEOUT
> variable to use in a sleep command in loadslot as follows:
> # Now rewind and check
> echo " -> rewind $loadslot" >> $DBGFILE
> echo " -> sleeping TIMEOUT: $TIMEOUT
> seconds..." >> $DBGFILE
> sleep $TIMEOUT
> echo " -> rewind..." >> $DBGFILE
> $MT $MTF $tape rewind
> echo "$loadslot" > $slotfile
> echo "$loadslot $tape"
> exit 0
>
> Otherwise I would consistently get
> "/dev/nst0: Input/output error"
> on any rewind or tape change by the script
>
> This MOSTLY allowed the script to work, except -
> I have a barcode reader.
> The result of an mtx status command with a barcode reader is different than
> without - at least when the tapes have barcodes -
> here's what the mtx -f /dev/sg1 status result looks like (with barcode)
>
> Data Transfer Element 0:Full (Storage Element 11 Loaded):VolumeTag = 000009
> Storage Element 1:Full :VolumeTag=000000
> Storage Element 2:Full :VolumeTag=000001
> Storage Element 3:Full :VolumeTag=000002
> Storage Element 4:Full :VolumeTag=000003
> Storage Element 5:Full
> Storage Element 6:Full
> Storage Element 7:Full
> Storage Element 8:Full
> Storage Element 9:Full
> Storage Element 10:Full
> Storage Element 11:Empty
> Storage Element 12:Full
> Storage Element 13:Full
> Storage Element 14:Full
> Storage Element 15:Full
>
> which caused the sed command to give back:
> [amanda@ford amanda]$ mtx -f /dev/sg1 status | sed -n 's/Data Transfer
> Element 0:Empty/-1/p;s/Data Transfer Element 0:Full (Storage Element \(.\)
> Loaded)/\1/p'
> 1:VolumeTag = 000000
> which won't work...
>
> here's the change:
> readstatus() {
> EMP_FULL=`$MTX status | grep "Data Transfer Element" | awk '{
> print $4 }' | awk -F: '{print $2 }'`
> if [ $EMP_FULL = "Empty" ]; then
> usedslot="-1"
> fi
> if [ $EMP_FULL = "Full" ]; then
> usedslot=`$MTX status | grep "Data Transfer Element" | awk
> '{ print $7 }'`
> fi
> ........
>
> I'll include the full script below this.
>
> I thought this might come in handy and might also be something you would
> want to include in the upkeep of chg-zd-mtx.
>
> --doug
>
> Doug Munsinger
>
> egenera, Inc.
> [EMAIL PROTECTED]
> 563 Main Street, Bolton, MA 01740
> Tel: 508-786-9444 ext. 2612
> OR 508-481-5493
> fax: 978 779-9730
>
>
>
>
>
> At 03:54 PM 1/31/2001 -0800, Joe Rhett wrote:
> >Are you using the latest MTX version?
> >
> >Is the problem mtx itself? (Can you run "mtx load x", "mtx unload x" etc?
> >
> >Or is the problem with the changer script? Are you using the latest
> >version? You can get it at
> > http://www.noc.isite.net/?Projects
> >
> >On Wed, Jan 31, 2001 at 07:32:44PM -0000, [EMAIL PROTECTED]
> >wrote:
> > > I'm new to amanda and really can use some help installing a new
> > > changer. The new unit is a Overland Minilibrary (15-slot) with 1
> > > DLT-7000 drive. Our old unit is working fine but our filesystems have
> > > grown a lot. The new unit is a model 7115.
> > >
> > > The problem appears to be my mtx configuration. Any help is greatly
> > > appreciated!!!
> > >
> > > Sam Lauro
> >
> >--
> >Joe Rhett Chief Technology Officer
> >[EMAIL PROTECTED] ISite Services, Inc.
> >
> >PGP keys and contact information: http://www.noc.isite.net/Staff/
>
>
> Full revised chg-zd-mtx script:
>
> #!/bin/sh
> #
> # Exit Status:
> # 0 Alles Ok
> # 1 Illegal Request
> # 2 Fatal Error
> #
> # Contributed by Eric DOUTRELEAU <[EMAIL PROTECTED]>
> # This is supposed to work with Zubkoff/Dandelion version of mtx
> #
> # Modified by Joe Rhett <[EMAIL PROTECTED]>
> # to work with MTX 1.2.9 by Eric Lee Green http://mtx.sourceforge.net
> #
> # modified 010201 by doug munsinger ([EMAIL PROTECTED]) to
> # 1) add timeout for loadslot routine at rewind command to
> # remove "/dev/nst0: Input/output error" see TIMEOUT below to set
> # 2) re-write the readstatus "sed" command as awks instead to parse
> correctly even
> # when a barcode reader is present
>
> # You may need to customize these things
>
> #timeout variable - if you are getting something like "/dev/nst0:
> Input/output error"
> # your tape drive may need this - mine was an Ecrix VXA and this made
> the rewind
> # commands in the loadslot routine actually function
> TIMEOUT=30
>
> MT=/bin/mt
> MTF=-f
> MTX=/usr/local/bin/mtx
> firstslot=1
> lastslot=14 # Don't forget to leave out the cleaning tape.
> cleanslot=15 # Which slot contains your cleaning tape?
>
> # Does your tape driver require a 'mt offline' before mtx unload?
> OFFLINE_BEFORE_UNLOAD=0
>
> # Do you want to clean the drive after a certain number of accesses?
> # NOTE - This is unreliable, since 'accesses' aren't 'uses', and we
> # have no reliable way to count this. A single amcheck could
> # generate as many accesses as slots you have, plus 1.
> # ALSO NOTE - many modern tape loaders handle this automatically.
> #
> AUTOCLEAN=0 # Set to '1' or greater to enable
> autocleancount=99
> # No user-level customized required beyond this point.
>
> # Paths
> prefix=/usr/local
> exec_prefix=${prefix}
> sbindir=${exec_prefix}/sbin
> libexecdir=${exec_prefix}/libexec
>
> # try to hit all the possibilities here
> PATH=$sbindir:$libexecdir:/usr/bin:/bin:/usr/sbin:/sbin:/usr/ucb:/usr/local/bin
> export PATH
>
> if [ -d "/tmp/amanda" ]; then
> DBGFILE=/tmp/amanda/chg-egen-mtx.debug
> else
> DBGFILE=/tmp/chg-egen-mtx.debug
> fi
>
> USE_VERSION_SUFFIXES="no"
> if test "$USE_VERSION_SUFFIXES" = "yes"; then
> SUF="-2.4.2p1"
> else
> SUF=
> fi
>
> myname=$0
> tape=`amgetconf$SUF tapedev`
> TAPE=`amgetconf$SUF changerdev`; export TAPE # for mtx command
> if [ "$tape" = "/dev/null" -o "$TAPE" = "/dev/null" ]; then
> echo "Both tapedev and changerdev must be specified in config file";
> exit 2;
> fi
>
> changerfile=`amgetconf$SUF changerfile`
>
> cleanfile=$changerfile-clean
> accessfile=$changerfile-access
> slotfile=$changerfile-slot
> [ ! -f $cleanfile ] && echo 0 > $cleanfile
> [ ! -f $accessfile ] && echo 0 > $accessfile
> [ ! -f $slotfile ] && echo 0 > $slotfile
> cleancount=`cat $cleanfile`
> accesscount=`cat $accessfile`
>
> # Routines start here
> readstatus() {
> EMP_FULL=`$MTX status | grep "Data Transfer Element" | awk '{
> print $4 }' | awk -F: '{print $2 }'`
> if [ $EMP_FULL = "Empty" ]; then
> usedslot="-1"
> fi
> if [ $EMP_FULL = "Full" ]; then
> usedslot=`$MTX status | grep "Data Transfer Element" | awk
> '{ print $7 }'`
> fi
> # usedslot=`$MTX status |
> # sed -n 's/Data Transfer Element 0:Empty/-1/p;s/Data
> Transfer Element 0:Full (Storage Element \(.\) Loaded)/\1/p'`
> #
> # if [ "$usedslot" -eq "-1" ]; then
> # echo '-1' > $slotfile
> # fi
> echo "STATUS -> currently loaded slot = $usedslot" >> $DBGFILE
> }
>
>
> eject() {
> readstatus
> echo "EJECT -> ejecting tape from slot $usedslot" >> $DBGFILE
> if [ $usedslot -gt 0 ]; then
> if [ $OFFLINE_BEFORE_UNLOAD -gt 0 ]; then
> $MT $MTF $tape offline
> fi
> $MTX unload $usedslot 2>/dev/null
> echo "0 $tape"
> exit 0
> else
> echo "0 Drive was not loaded"
> exit 1
> fi
> }
>
> reset() {
> $myname -eject >/dev/null
> echo "RESET -> loading tape from slot 1" >> $DBGFILE
> result=`$MTX load 1 2>&1`
> if [ $? -eq 0 ]; then
> echo "1 $tape"
> exit 0
> else
> echo "1 $result"
> exit 1
> fi
> }
>
> loadslot() {
> readstatus
>
> whichslot=$1
> echo "LOADSLOT -> load tape from slot $whichslot" >> $DBGFILE
> case $whichslot in
> current)
> if [ $usedslot -lt 0 ]; then
> loadslot=$firstslot
> else
> echo "$usedslot $tape"
> exit 0
> fi
> ;;
> next|advance)
> if [ $usedslot -lt 0 ]; then
> loadslot=$firstslot
> else
> loadslot=`expr $usedslot + 1`
> if [ $loadslot -gt $lastslot ]; then
> loadslot=$firstslot
> fi
> fi
> ;;
> prev)
> loadslot=`expr $usedslot - 1`
> if [ $loadslot -lt $firstslot ]; then
> loadslot=$lastslot
> fi
> ;;
> first)
> loadslot=$firstslot
> ;;
> last)
> loadslot=$lastslot
> ;;
> [${firstslot}-${lastslot}])
> loadslot=$1
> ;;
> clean)
> loadslot=$cleanslot
> ;;
> *)
> echo "0 illegal request"
> exit 1
> ;;
> esac
>
> # Is this already the current slot?
> if [ $loadslot = $usedslot ]; then
> echo "$usedslot $tape"
> exit 0
> fi
>
> # Is this a cleaning request?
> if [ $loadslot = $cleanslot ]; then
> expr $cleancount + 1 > $cleanfile
> echo 0 > $accessfile
> else
> expr $accesscount + 1 > $accessfile
> if [ $AUTOCLEAN -gt 0 -a $accesscount -gt
> $autocleancount ]; then
> $myname -slot clean >/dev/null
>
> # Slot $cleanslot might contain an ordinary tape
> rather than a cleaning
> # tape. A cleaning tape *MIGHT* auto-eject; an
> ordinary tape does not.
> # We therefore have to read the status again to
> check what actually happened.
> readstatus
> fi
> fi
>
> # Unload any previous tape
> if [ $usedslot -ne "-1" ]; then
> echo " -> unload $usedslot" >> $DBGFILE
> if [ $OFFLINE_BEFORE_UNLOAD -gt 0 ]; then
> $MT $MTF $tape offline
> fi
> result=`$MTX unload $usedslot 2>&1`
> status=$?
> echo " -> status $status, result '$result'" >>
> $DBGFILE
> if [ $status -ne 0 ]; then
> echo "$loadslot $result"
> exit 2
> fi
> fi
>
> # Load the tape, finally!
> echo " -> loading tape from slot $loadslot" >> $DBGFILE
> result=`$MTX load $loadslot 2>&1`
> status=$?
> echo " -> status $status, result '$result'" >> $DBGFILE
>
> # If there is an error, abort unless the slot is simply empty
> if [ $status -ne 0 ]; then
> empty=`echo $result | grep "is Empty"`
> if [ -z "$empty" ]; then
> echo "$loadslot $result"
> exit 2
> else
> loadslot next
> fi
> else
> # Don't assume the drive is ready until we stop getting
> tape offline
> readyError="offline"
> while [ -n "$readyError" ]; do
> readyStatus=`$MT $MTF $tape status 2>&1`
> echo " -> readyStatus = $readyStatus" >>
> $DBGFILE
> readyError=`echo $readyStatus | grep "offline"`
> done
>
> # Now rewind and check
> echo " -> rewind $loadslot" >> $DBGFILE
> echo " -> sleeping TIMEOUT: $TIMEOUT
> seconds..." >> $DBGFILE
> sleep $TIMEOUT
> echo " -> rewind..." >> $DBGFILE
> $MT $MTF $tape rewind
> echo "$loadslot" > $slotfile
> echo "$loadslot $tape"
> exit 0
> fi
> }
>
> info() {
> readstatus
> echo "INFO -> current slot $usedslot, last slot $lastslot, can go
> backwards 1" >> $DBGFILE
> if [ $usedslot -lt 0 ]; then
> echo "0 $lastslot 1"
> else
> echo "$usedslot $lastslot 1"
> fi
> exit 0
> }
>
> # Program invocation begins here
> echo "\n`date` Invoked with args '$@'" >> $DBGFILE
> while [ $# -ge 1 ];do
> case $1 in
> -slot)
> shift
> loadslot $*
> ;;
> -info)
> shift
> info
> ;;
> -reset)
> shift
> reset
> ;;
> -eject)
> shift
> eject
> ;;
> *)
> echo "Unknown option $1"
> exit 2
> ;;
> esac
> done
>
>
>
>
>
>
> At 04:15 PM 2/1/2001 -0500, Jason Hollinden wrote:
> >After several days of searching, reading, and cussing, I am posting my woes
> >in the hopes someone has some insight to using barcodes.
> >
> >Just for background, I have a Dell Poweredge-2400 with RedHat 6.2, running
> >amanda-2.4.2p1. My tape library is an ADIC Scalar 100 hanging off a
> >dedicated
> >Adaptec 2944UW. All my tapes have been labeled using amlabel. I only have
> >8 tapes (and a cleaning tape resting in the last slot), as you will see in the
> >attached configs, as it takes way too long to index 30 tapes.
> >
> >That said, I'm having trouble with several different paths. I have about 60%
> >sucess with chg-scsi, and 90% success with chg-zd-mtx (using mtx-1.2.10-1).
> >
> >chg-scsi problems:
> >
> >Using this glue script, I can do all of the "tape movement only" functions,
> >such as amtape's eject, reset, and slot <command or #>. Where it fails is
> >any activity where it has to load tapes and 'quickly' read from them, such as
> >amtape's update, label, and show commands. The problem is that amtape is not
> >giving my library enough time to load up the tape, despite whatever the sleep
> >setting in my chg-scsi.conf file is set to. I've pretty much confirmed this
> >with the fact that I can run the same command again after the tape is
> >completely loaded, and the amlabel shows up fine. Here's an example:
> >
> >### Ran with no tape in the drive
> >
> >bash-2.03$ /usr/sbin/amtape Reubens current
> >amtape: scanning current slot in tape-changer rack:
> >slot 0: rewinding tape: Input/output error
> >
> >### This loads a tape from slot 0, but doesn't wait for it to finish winding
> >### Next is the exact same command, after it's done winding
> >
> >bash-2.03$ /usr/sbin/amtape Reubens current
> >amtape: scanning current slot in tape-changer rack:
> >slot 0: date X label Reubens01
> >
> >###
> >
> >Because of this, I can't get the bardcodes from the tapes to do much of
> >anything. Chg-scsi will populate my barcode file with just the tape loaded,
> >but when I need to index all the tapes with 'amtape Reubens update' it has no
> >data, since it doesn't sleep until the tape is ready. My sleep statement has
> >been everything from 120 - 1200 sec. but I don't believe that is what it is
> >supposed to do, anyways.
> >
> >chg-zd-mtx problems:
> >
> >Actually, I have very few problems with this, except that there is no barcode
> >work done with it. I had to modify it to work with > 9 slots, and can post
> >that if someone wants. The main problem is no barcode support. The
> >version of
> >mtx I have reports the barcodes, so modifying this glue script some more
> >to use
> >them shouldn't be too much trouble.
> >
> >This is where I finally start getting to my point...
> >
> >How does Amanda utilize barcodes? Are there any Amanda commands that directly
> >mess with barcodes, or is the only thing that has anything to do with them the
> >changer glue script, and it just so happens that only chg-scsi looks at them
> >right now? If it's the second, I'm about a few days away from writing a
> >chg-zd-mtx variant with an "internal" barcode matching system.
> >
> >I'm attaching about everything I've seen on this group as a usable file for
> >cases like this, and if there is anything I've missed, please tell me. If,
> >after looking through my stuff, it looks like a simple fix for chg-scsi on my
> >part for it to work correctly, that's great.
> >
> >A quick list of attachments:
> >
> >- amanda.conf
> >- ADIC.conf (chg-scsi script)
> >- status-all.txt (running chg-scsi -status all)
> >
> ># below 3 were done with no tape in the drive, and 8 in the slots
> >- chg-scsi.debug.update (generated after running 'amtape Reubens update')
> >- amtape.debug.update (generated after running 'amtape Reubens update')
> >- update.txt (what 'amtape Reubens update' spat to the screen)
> >
> ># outputs from 'amtape Reubens slot current' with tape in drive
> >- chg-scsi.debug.current
> >- amtape.debug.current
> >- current.txt (paste from the screen)
> >
> >--
> > Jason Hollinden
> >
> > SMG Systems Admin
>
>
>
>
>
> Doug Munsinger
>
> egenera, Inc.
> [EMAIL PROTECTED]
> 563 Main Street, Bolton, MA 01740
> Tel: 508-786-9444 ext. 2612
> OR 508-481-5493
> fax: 978 779-9730
--
Jason Hollinden
SMG Systems Admin
