What is the length of the tapetype....using hardware compression you will need to adjust the length to what you expect your actually compression ratio to be..if you expect each tape to be about 70gb then your length would be 70000 mbytes.
But I would suggest you not go to the limit of your expected compression. Don Eric Trager wrote: >Hi, all. I managed to get my changer working with Amanda using chg-scsi. >Today I started the first test dump to see what would happen. > >Using hardware compression, my DLT-IV tapes hold about 70 GB. I set up a >dump of several large and small partitions totalling ~88 GB. One was not >mounted for the dump so the total was actually 73 GB. I set runtapes to 2 >in the amanda.conf file thinking this would tell amanda to use two tapes, >but I see this in the amdump log: > >[snip] > >INITIAL SCHEDULE (size 73008621): > gorge /export/home pri 11747 lev 0 size 16340165 > gorge /usr/xxxx pri 11747 lev 0 size 15425329 > gorge /usr/oracle2 pri 11747 lev 0 size 12874971 > gorge /usr/oracle pri 11747 lev 0 size 7166160 > gorge /usr/oracle5 pri 11747 lev 0 size 4502198 > gorge /usr/oracle3 pri 11747 lev 0 size 4348242 > gorge /usr/oracle4 pri 11747 lev 0 size 4143069 > gorge / pri 11747 lev 0 size 3541838 > gorge /public pri 11747 lev 0 size 982111 > gorge /var pri 11747 lev 0 size 818101 > gorge /export/gorge pri 11746 lev 0 size 2865347 > gorge /export/mada/yoga pri 11746 lev 0 size 40 > >DELAYING DUMPS IF NEEDED, total_size 73008621, tape length 69029888 mark >43 >planner: FAILED gorge /export/gorge 20020226 0 [dumps too big, but cannot >incremental dump new disk] >planner: FAILED gorge /var 20020226 0 [dumps too big, but cannot >incremental dump new disk] >planner: FAILED gorge /public 20020226 0 [dumps too big, but cannot >incremental dump new disk] > delay: Total size now 68342837. >[snip] > >-------- > >So it dropped some small partitions until it got to a total it likes. I >thought, however, that runtapes tells Amanda to use the changer to fill >additional tapes as needed. Am I assuming the wrong thing? Does runtapes >mean something else? > >I have included some snips from my configs. Please shed some light on this >if you can. > >TIA, > >Eric > > >-------- amanda.conf -------- > >runtapes 2 # number of tapes to use in a single run of amdump >tpchanger "/usr/xxxx/opt/amanda-2.4.3b2/etc/amanda/Othertest/chg-scsi" >tapedev "0" >changerfile >"/usr/xxxx/opt/amanda-2.4.3b2/etc/amanda/Othertest/chg-scsi-solaris.conf" >labelstr "^CMAG-[0-9][0-9]*$" >dumpcycle 1 #the number of days in the normal dump cycle >bumpdays 1 #minimum days at each level >bumpsize 20 Mb #minimum savings (threshold) to bump level 1 -> 2 >bumpmult 2 #threshold = bumpsize * bumpmult^(level-1) >runspercycle 1 # the number of amdump runs in dumpcycle days >tapecycle 4 # the number of tapes in rotation > >-------- chg-scsi-solaris.conf -------- > >number_configs 1 >eject 1 # Tapedrives need an eject command >sleep 45 # Seconds to wait until the tape gets ready >cleanmax 1000 # How many times could a cleaning tape get used >changerdev /dev/changer ># >config 0 >drivenum 0 >dev /dev/rmt/1cbn >startuse 0 # The slots associated with the drive 0 >enduse 14 # > >-------------------------------------- >
