8 # Contributed by Eric DOUTRELEAU <Eric.Doutreleau@int-evry.fr>
9 # This is supposed to work with Zubkoff/Dandelion version of mtx
11 # Modified by Joe Rhett <jrhett@isite.net>
12 # to work with MTX 1.2.9 by Eric Lee Green http://mtx.sourceforge.net
14 # Modified by Jason Hollinden <jhollind@sammg.com> on 13-Feb-2001
15 # to work with MTX 1.2.10, >9 slots, has barcode support, and works with
16 # multiple configs at once.
17 # NOTE: Only tested the 2 additions with an ADIC Scalar 100.
19 ################################################################################
20 # Here are the things you need to do and know to configure this script:
22 # * Figure out what the robot device name is and what the tape drive
23 # device name is. They will be different!
25 # You cannot send robot commands to a tape drive and vice versa.
26 # Both should respond to "mtx -f /dev/... inquiry". Hopefully,
27 # that output will make it obvious which is which.
29 # For instance, here is what mtx has to say about my current robot:
31 # Product Type: Medium Changer
33 # Product ID: 'ACL2640 206 '
35 # Attached Changer: No
37 # and here is what it says about a tape drive:
39 # Product Type: Tape Drive
40 # Vendor ID: 'Quantum '
41 # Product ID: 'DLT4000 '
43 # Attached Changer: No
45 # Note the "Product Type" value makes it clear which is which.
47 # If it is not obvious, "mf -f /dev/... rewind" should be happy when
48 # talking to a (loaded) tape drive but the changer should give some
49 # kind of error. Similarly, "mtx -f /dev/... status" should show good
50 # results with the changer but fail with a tape drive device name.
52 # Once you have this figured out, set "changerdev" in amanda.conf
53 # to the changer device and "tapedev" to the tape device.
55 # * Find out what the first and last storage slots are. Running
56 # "mtx -f /dev/... status" should give you something like this
57 # (although the output will vary widely based on the version of mtx
58 # and the specifics of your robot):
60 # Storage Changer /dev/changer:1 Drives, 9 Slots ( 0 Import/Export )
61 # Data Transfer Element 0:Empty
62 # Storage Element 1:Full :VolumeTag=SR0001
63 # Storage Element 2:Full :VolumeTag=SR0002
64 # Storage Element 3:Full :VolumeTag=SR0003
65 # Storage Element 4:Full :VolumeTag=SR0004
66 # Storage Element 5:Full :VolumeTag=SR0005
67 # Storage Element 6:Full :VolumeTag=SR0006
68 # Storage Element 7:Full :VolumeTag=SR0007
69 # Storage Element 8:Full :VolumeTag=SR0008
70 # Storage Element 9:Full :VolumeTag=SR0009
72 # This says the first storage slot (element) is "1" and the last
73 # is "9". If you allocate the entire robot to Amanda, you do not need
74 # to set the "firstslot" or "lastslot" configuration file variables --
75 # the script will compute these values for you.
77 # You do not have to allocate all of the slots for Amanda use,
78 # but whatever slots you use must be contiguous (i.e. 4 through 9
79 # in the above would be OK but 1, 2, 5, 6, 9 would not). The one
80 # exception to this is that if one of the slots contains a cleaning
81 # cartridge, it may be in any slot (Amanda will just skip over it if
82 # it is between firstslot and lastslot).
84 # * Speaking of cleaning cartridges, if you have a storage slot dedicated
85 # to one, figure out what slot it is in. That slot number will go in
86 # the "cleanslot" variable.
88 # Also, decide if you want the changer script to automatically run
89 # the cleaning tape through the drive after every so many mounts,
90 # and how many mounts you want to do between cleanings. If you
91 # want the script to do this, set the "autoclean" variable to 1 and
92 # the "autocleancount" to the number of mounts between cleanings.
93 # If you do not want to do automatic cleanings (including not having
94 # a cleaning cartridge in the robot), set "autoclean" to 0.
96 # Note that only a count of mounts is used to determine when it is
97 # time to clean. The script does not try to detect if the drive is
98 # requesting cleaning, or how much the drive was used on a given
101 # * If you tell Amanda about a cleaning cartridge, whether for automatic
102 # operation or manual (amtape <config> clean), you must also tell
103 # the script how long it takes to run the cleaning cycle. It is
104 # impossible for the script to determine when the cleaning operation
105 # is done, so the "cleancycle" variable is the number of seconds
106 # the longest cleaning operation takes (you'll just have to figure
107 # this out by watching it a few times, or maybe finding it in a tape
108 # drive hardware manual). The script will sleep for this length of
109 # time whenever the cleaning tape is referenced. The default is 120
110 # seconds (two minutes).
112 # * Figure out the drive slot number. By default, it is set to 0.
113 # In the example above, the tape drive ("Data Transfer Element")
114 # is in slot 0. If your drive slot is not 0, you
115 # need to set the drive slot number with the "driveslot" variable.
117 # * Figure out whether your robot has a barcode reader and whether
118 # your version of mtx supports it. If you see "VolumeTag" entries
119 # in the "mtx -f /dev/xxx status" output you did above, you have
120 # a reader and mtx can work with it, so you may set the "havereader"
121 # variable to 1. The default is 0 (do not use a reader).
123 # * Pick any tape to load and then determine if the robot can put it
124 # away directly or whether an "offline" must be done first.
126 # With the tape still mounted and ready, try to put the tape away
127 # with "mtx". If you get some kind of error, which is the most
128 # common response, try "mt -f /dev/... offline", wait for the drive
129 # to unload and make sure the robot takes no action on its own to
130 # store the tape. Assuming it does not, try the "mtx" command again
133 # If you had to issue the "mt -f /dev/... offline" before you could
134 # use "mtx" to store the tape, set the "offline_before_unload"
135 # variable to 1. If "mtx" unloaded the drive and put the tape away
136 # all by itself, set it to 0.
138 # * Some drives and robots require a small delay between unloading the
139 # tape and instructing the robot to move it back to storage.
140 # For instance, if you try to grab the tape too soon on an ATL robot
141 # with DLT tape drives, it will rip the leader out of the drive and
142 # require sincerely painful hardware maintenance.
144 # If you need a little delay, set the "unloadpause" variable to
145 # the number of seconds to wait before trying to take a tape from
146 # a drive back to storage. The default is 0.
148 # * Some drives also require a short pause after loading, or the drive
149 # will return an I/O error during a test to see if it's online (which
150 # this script uses "mt rewind" to test). My drives don't recover from
151 # this, and must be reloaded before they will come online after failing
152 # such a test. For this reason there is an "initial_poll_delay"
153 # variable which will pause for a certain number of seconds before
154 # looping through the online test for the first time. The default is 0.
158 # Now you are ready to set up the variables in the changer configuration
161 # All variables are in "changerfile".conf where "changerfile" is set
162 # in amanda.conf. For example, if amanda.conf has:
164 # changerfile="/etc/amanda/Dailyset1/CHANGER"
166 # the variables must be in "/etc/amanda/Dailyset1/CHANGER.conf".
168 # If "changerfile" is a relative path, it is relative to the directory
169 # that contains amanda.conf. That also happens to be the directory Amanda
170 # makes current before running this script.
172 # Here is a commented out example file with all the variables and showing
173 # their default value (if any):
175 # firstslot=? #### First storage slot (element) -- required
176 # lastslot=? #### Last storage slot (element) -- required
177 # cleanslot=-1 #### Slot with cleaner tape -- default is "-1"
178 # #### Set negative to indicate no cleaner available
179 # driveslot=0 #### Drive slot number. Defaults to 0
180 # #### Use the 'Data Transfer Element' you want
182 # # Do you want to clean the drive after a certain number of accesses?
183 # # NOTE - This is unreliable, since 'accesses' aren't 'uses', and we
184 # # have no reliable way to count this. A single amcheck could
185 # # generate as many accesses as slots you have, plus 1.
186 # # ALSO NOTE - many modern tape loaders handle this automatically.
188 # autoclean=0 #### Set to '1' or greater to enable
190 # autocleancount=99 #### Number of access before a clean.
192 # havereader=0 #### If you have a barcode reader, set to 1.
194 # offline_before_unload=0 #### Does your robot require an
195 # #### 'mt offline' before mtx unload?
197 # poll_drive_ready=NN #### Time (seconds) between tests to see if
198 # #### the tape drive has gone ready (default: 3).
200 # max_drive_wait=NN #### Maximum time (seconds) to wait for the
201 # #### tape drive to become ready (default: 120).
203 # initial_poll_delay=NN #### initial delay after load before polling for
208 # Now it is time to test the setup. Do all of the following in the
209 # directory that contains the amanda.conf file, and do all of it as
214 # .../chg-zd-mtx -info
215 # echo $? #### (or "echo $status" if you use csh/tcsh)
217 # You should get a single line from the script like this (the actual
218 # numbers will vary):
222 # The first number (5) is the "current" slot. This may or may not be
223 # the slot actually loaded at the moment (if any). It is the slot
224 # Amanda will try to use next.
226 # The second number (9) is the number of slots.
228 # The third number will always be "1" and indicates the changer is
229 # capable of going backward.
231 # The fourth number is optional. If you set $havereader to 1, it
232 # will be "1", otherwise it will not be present.
234 # The exit code ($? or $status) should be zero.
238 # .../chg-zd-mtx -reset
241 # The script should output a line like this:
245 # The number at the first should match $firstslot. The device name
246 # after that should be your tape device.
248 # The exit code ($? or $status) should be zero.
252 # .../chg-zd-mtx -slot next
255 # The script should output a line like this:
259 # The number at the first should be one higher than $firstslot.
260 # The device name after that should be your tape device.
262 # The exit code ($? or $status) should be zero.
266 # .../chg-zd-mtx -slot current
269 # Assuming the tape is still loaded from the previous test, the
270 # robot should not move and the script should report the same thing
271 # the previous command did.
273 # * If you continue to run "-slot next" commands, the robot should load
274 # each tape in turn then wrap back around to the first when it
275 # reaches $lasttape. If $cleanslot is within the $firstslot to
276 # $lastslot range, the script will skip over that entry.
278 # * Finally, try some of the amtape commands and make sure they work:
280 # amtape <config> reset
281 # amtape <config> slot next
282 # amtape <config> slot current
284 # * If you set $havereader non-zero, now would be a good time to create
285 # the initial barcode database:
287 # amtape <config> update
290 ################################################################################
291 # To debug this script, first look in @AMANDA_DBGDIR@. The script
292 # uses one of two log files there, depending on what version of Amanda
293 # is calling it. It may be chg-zd-mtx.YYYYMMDD*.debug, or it may be
294 # changer.debug.driveN where 'N' is the drive number.
296 # If the log file does not help, try running the script, **as the Amanda
297 # user**, in the amanda.conf directory with whatever set of args the log
298 # said were used when you had a problem. If nothing else useful shows up
299 # in the output, try running the script with the DEBUG environment variable
300 # set non-null, e.g.:
302 # env DEBUG=yes .../chg-zd-mtx ...
303 ################################################################################
305 ################################################################################
306 # You may need to customize these things
307 ################################################################################
313 ################################################################################
314 # No user-level customization should be required beyond this point.
315 ################################################################################
317 test -n "$DEBUG" && set -x
318 TMPDIR="@AMANDA_TMPDIR@"
319 DBGDIR="@AMANDA_DBGDIR@"
322 myname=`expr "$argv0" : '.*/\(.*\)'`
324 config=`pwd 2>/dev/null`
325 config=`expr "$config" : '.*/\(.*\)'`
328 # Functions to write a new log file entry and append more log information.
331 ds=`date '+%H:%M:%S' 2>/dev/null`
332 if [ $? -eq 0 -a -n "$ds" ]; then
333 logprefix=`echo "$ds" | sed 's/./ /g'`
339 if [ -z "$logprefix" ]; then
340 echo "$@" >> $DBGFILE
342 echo "$logprefix" "$@" >> $DBGFILE
347 if [ -z "$logprefix" ]; then
348 echo "===" "`date`" "===" >> $DBGFILE
349 echo "$@" >> $DBGFILE
351 ds=`date '+%H:%M:%S' 2>/dev/null`
352 echo "$ds" "$@" >> $DBGFILE
357 # Common exit function.
361 # $3 = additional information (error message, tape devive, etc)
366 if [ $internal_call -gt 0 ]; then
376 Log $call_type "($code)" "->" "$exit_slot" "$@"
377 echo "$exit_slot" "$@"
378 if [ $call_type = Return ]; then
381 amgetconf$SUF dbclose.$argv0:$DBGFILE > /dev/null 2>&1
386 # Function to run another command and log it.
391 rm -f $stdout $stderr
392 "$@" > $stdout 2> $stderr
394 Log Exit code: $exitcode
398 cat $stdout >> $DBGFILE
403 cat $stderr >> $DBGFILE
411 # Return success if the arg is numeric.
415 test -z "$1" && return 1
416 x="`expr "$1" : '\([-0-9][0-9]*\)' 2>/dev/null`"
417 return `expr X"$1" != X"$x"`
421 # Run $MTX status unless the previous output is still valid.
426 test -n "$DEBUG" && set -x
427 if [ $mtx_status_valid -ne 0 ]; then
431 Run $MTX status > $mtx_status 2>&1
433 if [ $status -eq 0 ]; then
440 # Determine the slot currently loaded. Set $loadedslot to the slot
441 # currently loaded, or "-1", and $loadedbarcode to the corresponding
442 # barcode (or nothing).
446 test -n "$DEBUG" && set -x
450 /^Data Transfer Element:Empty/ {
454 /^Data Transfer Element '$driveslot':Empty/ {
458 /^Data Transfer Element:Full.*:VolumeTag/ {
459 s/.*(Storage Element \([0-9][0-9]*\) Loaded):VolumeTag *= *\([^ ]*\)/\1 \2/p
462 /^Data Transfer Element '$driveslot':Full.*:VolumeTag/ {
463 s/.*(Storage Element \([0-9][0-9]*\) Loaded):VolumeTag *= *\([^ ]*\)/\1 \2/p
466 /^Data Transfer Element:Full/ {
467 s/.*(Storage Element \([0-9][0-9]*\) Loaded)\(.*\)/\1/p
470 /^Data Transfer Element '$driveslot':Full/ {
471 s/.*(Storage Element \([0-9][0-9]*\) Loaded)\(.*\)/\1/p
474 ' < $mtx_status 2>&1`
475 shift # get rid of the "x"
479 if [ -z "$loadedslot" ]; then
480 Exit 2 "<none>" "could not determine current slot, are you sure your drive slot is $driveslot"
481 return $? # in case we are internal
483 if IsNumeric "$loadedslot" ; then
488 "currently loaded slot ($loadedslot) not numeric"
489 return $? # in case we are internal
491 Log "STATUS -> currently loaded slot = $loadedslot"
492 LogAppend " -> currently loaded barcode = \"$loadedbarcode\""
496 # Get a list of slots between $firstslot and $lastslot, if they are set.
497 # If they are not set, set them to the first and last slot seen on the
498 # assumption the entire robot is to be used (???).
503 test -n "$DEBUG" && set -x
504 if [ -n "$slot_list" ]; then
509 /^Data Transfer Element:Full/ {
510 s/.*(Storage Element \([0-9][0-9]*\) Loaded)\(.*\)/\1/p
512 /^Data Transfer Element '$driveslot':Full/ {
513 s/.*(Storage Element \([0-9][0-9]*\) Loaded)\(.*\)/\1/p
515 /^[ ]*Storage Element \([0-9][0-9]*\):Full/ {
516 s/.*Storage Element \([0-9][0-9]*\):.*/\1/p
518 ' < $mtx_status 2>&1 | grep -v "^${cleanslot}\$" | sort -n`
519 slot_list=`echo $slot_list` # remove the newlines
520 if [ $firstslot -lt 0 -o $lastslot -lt 0 ]; then
522 for slot in $slot_list; do
523 if [ $firstslot -lt 0 ]; then
524 Log "SLOTLIST -> firstslot set to $slot"
527 if [ $lastslot -lt 0 ]; then
531 if [ $lastslot -lt 0 -a $last -ge 0 ]; then
532 Log "SLOTLIST -> lastslot set to $last"
535 if [ $firstslot -lt 0 ]; then
538 "cannot determine first slot"
539 return $? # in case we are internal
540 elif [ $lastslot -lt 0 ]; then
543 "cannot determine last slot"
544 return $? # in case we are internal
548 for slot in $slot_list; do
549 if [ $slot -ge $firstslot -a $slot -le $lastslot ]; then
550 amanda_slot_list="$amanda_slot_list $slot"
553 if [ -z "$amanda_slot_list" ]; then
557 return $? # in case we are internal
559 slot_list="$amanda_slot_list"
564 exec_prefix=@exec_prefix@
566 libexecdir=@libexecdir@
568 # try to hit all the possibilities here
569 PATH=$sbindir:$libexecdir:/usr/bin:/bin:/usr/sbin:/sbin:/usr/ucb:/usr/local/bin
572 USE_VERSION_SUFFIXES="@USE_VERSION_SUFFIXES@"
573 if test "$USE_VERSION_SUFFIXES" = "yes"; then
579 DBGFILE=`amgetconf$SUF dbopen.$argv0 2>/dev/null | grep -v BUGGY`
582 DBGFILE=/dev/null # will try this again below
585 changerfile=`amgetconf$SUF changerfile 2>/dev/null | grep -v BUGGY`
586 if [ -z "$changerfile" ]; then
589 "changerfile must be specified in amanda.conf"
592 tape=`amgetconf$SUF tapedev 2>/dev/null | grep -v BUGGY`
593 if [ -z "$tape" ]; then
596 "tapedev may not be empty"
597 elif [ $tape = "/dev/null" -o `expr "$tape" : 'null:'` -eq 5 ]; then
600 "tapedev ($tape) may not be the null device"
602 TAPE=`amgetconf$SUF changerdev 2>/dev/null | grep -v BUGGY`
603 if [ -z "$TAPE" ]; then
606 "changerdev may not be empty"
607 elif [ $TAPE = "/dev/null" ]; then
610 "changerdev ($TAPE) may not be the null device"
612 export TAPE # for mtx command
614 #### Set up the various config files.
616 configfile=$changerfile.conf
617 cleanfile=$changerfile-clean
618 accessfile=$changerfile-access
619 slotfile=$changerfile-slot
620 labelfile=$changerfile-barcodes
621 [ ! -s $cleanfile ] && echo 0 > $cleanfile
622 [ ! -s $accessfile ] && echo 0 > $accessfile
623 [ ! -s $slotfile ] && echo -1 > $slotfile
624 [ ! -f $labelfile ] && > $labelfile
625 cleancount=`cat $cleanfile`
626 accesscount=`cat $accessfile`
628 #### Dig out of the config file what is needed
631 varlist="$varlist firstslot"
632 varlist="$varlist lastslot"
633 varlist="$varlist cleanslot"
634 varlist="$varlist cleancycle"
635 varlist="$varlist OFFLINE_BEFORE_UNLOAD" # old name
636 varlist="$varlist offline_before_unload"
637 varlist="$varlist unloadpause"
638 varlist="$varlist AUTOCLEAN" # old name
639 varlist="$varlist autoclean"
640 varlist="$varlist autocleancount"
641 varlist="$varlist havereader"
642 varlist="$varlist driveslot"
643 varlist="$varlist poll_drive_ready"
644 varlist="$varlist initial_poll_delay"
645 varlist="$varlist max_drive_wait"
649 val="`cat $configfile 2>/dev/null | sed -n '
650 # Ignore comment lines (anything starting with a #).
652 # Find the first var=val line in the file, print the value and quit.
653 /^[ ]*'$var'[ ]*=[ ]*\([^ ][^ ]*\).*/ {
654 s/^[ ]*'$var'[ ]*=[ ]*\([^ ][^ ]*\).*/\1/p
661 # Deal with driveslot first so we can get DBGFILE set if we are still
662 # using the old amgetconf.
664 if [ -z "$driveslot" ]; then
668 # Get DBGFILE set if it is not already.
670 if [ $DBGFILE = /dev/null ]; then
671 if [ -d "$DBGDIR" ]; then
672 DBGFILE=$DBGDIR/changer.debug.drive$driveslot
676 Log === Start "`date`" ===
678 if [ -z "$driveslot" ]; then
681 "cannot determine drive slot from $tape"
684 stdout=$TMPDIR/$myname.1.$$
685 stderr=$TMPDIR/$myname.2.$$
686 mtx_status=$TMPDIR/$myname.status.$$
687 trap "rm -f $stdout $stderr $mtx_status" 0 # exit cleanup
689 Log "Using config file $configfile"
691 # Log the argument list.
696 LogAppend "\$$i = \"$argv0\""
699 LogAppend "\$$i = \"$arg\""
702 # Set the default config values for those not in the file. Log the
703 # results and make sure each is valid (numeric).
705 firstslot=${firstslot:-'-1'} # default: mtx status
706 lastslot=${lastslot:-'-1'} # default: mtx status
707 cleanslot=${cleanslot:-'-1'} # default: -1
708 cleancycle=${cleancycle:-'120'} # default: two minutes
709 if [ -z "$offline_before_unload" -a -n "$OFFLINE_BEFORE_UNLOAD" ]; then
710 offline_before_unload=$OFFLINE_BEFORE_UNLOAD # (old name)
712 offline_before_unload=${offline_before_unload:-'0'} # default: 0
713 unloadpause=${unloadpause:-'0'} # default: 0
714 if [ -z "$autoclean" -a -n "$AUTOCLEAN" ]; then
715 autoclean=$AUTOCLEAN # (old name)
717 autoclean=${autoclean:-'0'} # default: 0
718 autocleancount=${autocleancount:-'99'} # default: 99
719 havereader=${havereader:-'0'} # default: 0
720 poll_drive_ready=${poll_drive_ready:-'3'} # default: three seconds
721 initial_poll_delay=${initial_poll_delay:-'0'} # default: zero zeconds
722 max_drive_wait=${max_drive_wait:-'120'} # default: two minutes
727 for var in $varlist; do
728 if [ $var = "OFFLINE_BEFORE_UNLOAD" ]; then
730 elif [ $var = "AUTOCLEAN" ]; then
734 if [ -z "$val" ]; then
737 "$var missing in $configfile"
739 if IsNumeric "$val" ; then
744 "$var ($val) not numeric in $configfile"
746 LogAppend $var = \"$val\"
749 # Run the rest of the config file sanity checks.
751 if [ $firstslot -gt $lastslot ]; then
754 "firstslot ($firstslot) greater than" \
755 "lastslot ($lastslot) in $configfile"
757 if [ $autoclean -ne 0 -a $cleanslot -lt 0 ]; then
760 "autoclean set but cleanslot not valid ($cleanslot)"
763 # Set up the current slot
765 currentslot=`cat $slotfile`
766 if IsNumeric "$currentslot" ; then
767 if [ $currentslot -lt $firstslot ]; then
768 Log "SETUP -> current slot $currentslot" \
769 "less than $firstslot ..." \
770 "resetting to $firstslot"
771 currentslot=$firstslot
772 elif [ $currentslot -gt $lastslot ]; then
773 Log "SETUP -> current slot $currentslot" \
774 "greater than $lastslot ..." \
775 "resetting to $lastslot"
776 currentslot=$lastslot
779 Log "SETUP -> contents of $slotfile ($currentslot) invalid," \
780 "setting current slot to first slot ($firstslot)"
781 currentslot=$firstslot
785 first_slot_in_list=-1
786 next_slot_after_current=-1
787 for slot in $slot_list; do
788 if [ $first_slot_in_list -lt 0 ]; then
789 first_slot_in_list=$slot # in case $firstslot is missing
791 if [ $slot -eq $currentslot ]; then
794 elif [ $slot -gt $currentslot ]; then
795 next_slot_after_current=$slot # $currentslot is missing
799 if [ $found_current -eq 0 ]; then
800 if [ $next_slot_after_current -lt 0 ]; then
801 new_currentslot=$first_slot_in_list
803 new_currentslot=$next_slot_after_current
805 Log "WARNING -> current slot $currentslot not available," \
806 "setting current slot to next slot ($new_currentslot)"
807 currentslot=$new_currentslot
813 # Eject the current tape and put it away.
817 test -n "$DEBUG" && set -x
818 Log "EJECT -> ejecting tape from $tape"
820 if [ $loadedslot -gt 0 ]; then
821 Log "EJECT -> moving tape from drive $driveslot" \
822 "to storage slot $loadedslot"
823 if [ $offline_before_unload -ne 0 ]; then
824 Run $MT $MTF $tape offline > /dev/null 2>&1
827 result=`Run $MTX unload $loadedslot $driveslot 2>&1`
829 Log " -> status $status, result \"$result\""
831 if [ $status -ne 0 ]; then
839 answer="Drive was not loaded"
842 Exit $code "$loadedslot" "$answer"
843 return $? # in case we are internal
847 # Reset the robot back to the first slot.
851 test -n "$DEBUG" && set -x
852 Log "RESET -> loading tape from slot $firstslot" \
853 "to drive $driveslot ($tape)"
854 # Call loadslot without doing it as an internal and let it finish
858 Exit 2 "<none>" "reset: should not get here"
859 return $? # in case we are internal
863 # Unload the current tape (if necessary) and load a new one (unless
864 # "advance"). If no tape is loaded, get the value of "current" from
869 test -n "$DEBUG" && set -x
870 if [ $# -lt 1 ]; then
871 Exit 2 "<none>" "Missing -slot argument"
872 return $? # in case we are internal
875 Log "LOADSLOT -> load drive $driveslot ($tape) from slot $whichslot"
877 numeric=`echo $whichslot | sed 's/[^0-9]//g'`
879 current|prev|next|advance)
880 find_slot=$currentslot
895 Exit 2 "<none>" "Illegal slot: \"$whichslot\""
896 return $? # in case we are internal
900 # Find the requested slot in the slot list. By loading the "set"
901 # command with multiple copies, we guarantee that if the slot is
902 # found, we can look both forward and backward without running
903 # off the end. Putting $cleanslot at the end allows us to find
904 # that slot since it is not in $slot_list.
906 set x $slot_list $slot_list $slot_list $cleanslot
907 shift # get rid of the "x"
910 while [ $# -gt 0 ]; do
911 if [ $1 -eq $find_slot ]; then
917 if [ $# -le 0 ]; then
920 "Cannot find slot $find_slot" \
921 "in slot list ($slot_list)"
922 return $? # in case we are internal
925 # Determine the slot to load.
938 # If the desired slot is already loaded, we are done. Only update
939 # current slot if this is not the cleaning slot.
941 if [ $loadslot = $loadedslot ]; then
942 if [ $loadslot -ne $cleanslot ]; then
944 echo $loadslot > $slotfile
946 Exit 0 "$loadedslot" "$tape"
947 return $? # in case we are internal
950 # If we are loading the cleaning tape, bump the cleaning count
951 # and reset the access count. Otherwise, bump the access count
952 # and see if it is time to do a cleaning.
953 if [ $loadslot = $cleanslot ]; then
954 rm -f $cleanfile $accessfile
955 expr $cleancount + 1 > $cleanfile
959 expr $accesscount + 1 > $accessfile
960 if [ $autoclean -ne 0 -a $accesscount -gt $autocleancount ]
962 internal_call=`expr $internal_call + 1`
963 loadslot clean > /dev/null 2>&1
965 internal_call=`expr $internal_call - 1`
966 if [ $status -ne 0 ]; then
967 Exit $status "$loadslot" "$exit_answer"
968 return $? # in case we are internal
971 # Slot $cleanslot might contain an ordinary tape
972 # rather than a cleaning tape. A cleaning tape
973 # *MIGHT* auto-eject; an ordinary tape does not.
974 # We therefore have to read the status again to
975 # check what actually happened.
981 # Unload whatever tape is in the drive.
982 internal_call=`expr $internal_call + 1`
983 eject > /dev/null 2>&1
985 internal_call=`expr $internal_call - 1`
986 if [ $status -gt 1 ]; then
987 Exit $status "$exit_slot" "$exit_answer"
988 return $? # in case we are internal
991 # If we were doing an "advance", we are done.
992 if [ $whichslot = advance ]; then
993 if [ $loadslot -ne $cleanslot ]; then
995 echo $loadslot > $slotfile
997 Exit 0 "$loadslot" "/dev/null"
998 return $? # in case we are internal
1001 # Load the tape, finally!
1002 Log "LOADSLOT -> loading tape from slot $loadslot" \
1003 "to drive $driveslot ($tape)"
1004 result=`Run $MTX load $loadslot $driveslot 2>&1`
1006 Log " -> status $status, result \"$result\""
1008 if [ $status -ne 0 ]; then
1009 Exit 2 "$loadslot" "$result"
1010 return $? # in case we are internal
1014 # Cleaning tapes never go "ready", so instead we just sit here
1015 # for "long enough" (as determined empirically by the user),
1016 # then return success.
1018 if [ $loadslot -eq $cleanslot ]; then
1019 Run sleep $cleancycle
1020 Exit 0 "$loadslot" "$tape"
1021 return $? # in case we are internal
1025 # Wait for the drive to go online.
1029 sleep $initial_poll_delay
1030 while [ $waittime -lt $max_drive_wait ]; do
1031 result=`Run $MT $MTF $tape rewind 2>&1`
1032 if [ $? -eq 0 ]; then
1036 sleep $poll_drive_ready
1037 waittime=`expr $waittime + $poll_drive_ready`
1039 if [ $ready -eq 0 ]; then
1040 Exit 2 "$loadslot" "Drive not ready after" \
1041 "$max_drive_wait seconds," \
1042 "rewind said \"$result\""
1043 return $? # in case we are internal
1046 if [ $loadslot -ne $cleanslot ]; then
1048 echo $loadslot > $slotfile
1050 Exit 0 "$loadslot" "$tape"
1051 return $? # in case we are internal
1055 # Return information about how the changer is configured and the current
1056 # state of the robot.
1060 test -n "$DEBUG" && set -x
1063 Log "INFO -> first slot: $firstslot"
1064 LogAppend " -> current slot: $currentslot"
1065 LogAppend " -> loaded slot: $loadedslot"
1066 LogAppend " -> last slot: $lastslot"
1067 LogAppend " -> slot list: $slot_list"
1068 LogAppend " -> can go backwards: 1"
1069 LogAppend " -> havereader: $havereader"
1072 # Check if a barcode reader is configured or not. If so, it
1073 # passes the 4th item in the echo back to amtape signifying it
1074 # can search based on barcodes.
1077 if [ $havereader -eq 1 ]; then
1081 if [ $currentslot -lt $firstslot -o $currentslot -gt $lastslot ]; then
1082 currentslot=$firstslot # what "current" will get
1085 shift # get rid of the "x"
1087 Exit 0 "$currentslot" "$numslots 1 $reader"
1088 return $? # in case we are internal
1092 # Read the labelfile and scan for a particular entry.
1096 labelfile_entry_found=0
1104 while read lbl bc junk; do
1105 line=`expr $line + 1`
1106 if [ -z "$lbl" -o -z "$bc" -o -n "$junk" ]; then
1107 Log "ERROR -> Line $line malformed: $lbl $bc $junk"
1108 LogAppend " -> Remove $labelfile" \
1110 "\"$sbindir/amtape $config update\""
1113 "Line $line malformed in $labelfile: $lbl $bc $junk"
1114 return $? # in case we are internal
1116 if [ $lbl = "$lbl_search" -o $bc = "$bc_search" ]; then
1117 if [ $labelfile_entry_found -ne 0 ]; then
1118 Log "ERROR -> Duplicate entries: $labelfile line $line"
1119 LogAppend " -> Remove $labelfile" \
1121 "\"$sbindir/amtape $config update\""
1124 "Duplicate entries: $labelfile line $line"
1125 return $? # in case we are internal
1127 labelfile_entry_found=1
1128 labelfile_label=$lbl
1129 labelfile_barcode=$bc
1135 # Adds the label and barcode for the currently loaded tape to the
1136 # barcode file. Return an error if the database is messed up.
1140 test -n "$DEBUG" && set -x
1141 if [ $# -lt 1 ]; then
1142 Exit 2 "<none>" "Missing -label argument"
1143 return $? # in case we are internal
1146 if [ $havereader -eq 0 ]; then
1147 Exit 2 "<none>" "Not configured with barcode reader"
1148 return $? # in case we are internal
1151 if [ $loadedslot -lt 0 ]; then
1152 Exit 1 "<none>" "No tape currently loaded"
1153 return $? # in case we are internal
1155 Log "LABEL -> Adding label \"$tapelabel\"" \
1156 "with barcode \"$loadedbarcode\"" \
1157 "for slot $loadedslot" \
1159 read_labelfile "$tapelabel" "$loadedbarcode" < $labelfile
1160 if [ $labelfile_entry_found -ne 0 ]; then
1162 if [ "$labelfile_barcode" != "$loadedbarcode" ]; then
1166 old_val=$labelfile_barcode
1167 new_val=$loadedbarcode
1168 elif [ "$labelfile_label" != "$tapelabel" ]; then
1170 lf_val=$loadedbarcode
1172 old_val=$labelfile_label
1175 if [ -n "$lf_val" ]; then
1176 LogAppend "ERROR -> !!! Label database corrupted !!!"
1177 LogAppend " -> \"$old_val\" conflicts with" \
1178 "new $val_type \"$new_val\"" \
1179 "for $lf_type \"$lf_val\""
1180 LogAppend " -> Remove $labelfile" \
1182 "\"$sbindir/amtape $config update\""
1185 "$tapelabel: \"$old_val\" conflicts with" \
1186 "new $val_type \"$new_val\"" \
1187 "for $lf_type \"$lf_val\""
1188 return $? # in case we are internal
1190 LogAppend " -> already synced"
1192 echo "$tapelabel $loadedbarcode" >> $labelfile
1193 LogAppend " -> appended $labelfile entry:" \
1194 "$tapelabel $loadedbarcode"
1196 Exit 0 "$loadedslot" "$tape"
1197 return $? # in case we are internal
1201 # Look for a label in the barcode file. If found, locate the slot it's
1202 # in by looking for the barcode in the mtx output, then load that tape.
1206 test -n "$DEBUG" && set -x
1207 if [ $# -lt 1 ]; then
1208 Exit 2 "<none>" "Missing -search argument"
1209 return $? # in case we are internal
1212 if [ $havereader -eq 0 ]; then
1213 Exit 2 "<none>" "Not configured with barcode reader"
1214 return $? # in case we are internal
1216 Log "SEARCH -> Hunting for label \"$tapelabel\""
1217 read_labelfile "$tapelabel" "" < $labelfile
1218 if [ $labelfile_entry_found -eq 0 ]; then
1219 LogAppend " -> !!! label \"$tapelabel\" not found" \
1221 LogAppend " -> Remove $labelfile" \
1223 "\"$sbindir/amtape $config update\""
1226 "$tapelabel: label \"$tapelabel\" not found in $labelfile"
1227 return $? # in case we are internal
1229 LogAppend " -> barcode is \"$labelfile_barcode\""
1232 /VolumeTag *= *'$labelfile_barcode' *$/ {
1233 s/.*Storage Element \([0-9][0-9]*\).*/\1/p
1237 LogAppend " -> foundslot is $foundslot"
1238 if [ -z "$foundslot" ]; then
1239 LogAppend "ERROR -> !!! Could not find slot" \
1240 "for barcode \"$labelfile_barcode\"!!!"
1241 LogAppend " -> Remove $labelfile" \
1243 "\"$sbindir/amtape $config update\""
1246 "barcode \"$labelfile_barcode\"" \
1247 "not found in mtx status output"
1248 return $? # in case we are internal
1250 # Call loadslot without doing it as an internal and let it finish
1254 Exit 2 "<none>" "searchtape: should not get here"
1255 return $? # in case we are internal
1259 # Program invocation begins here
1262 if [ $# -lt 1 ]; then
1263 Exit 2 "<none>" "Usage: $myname -command args"
1290 Exit 2 "<none>" "unknown option: $cmd"
1294 Exit 2 "<none>" "$myname: should not get here"