Gene Heskett wrote:
>On Monday 09 September 2002 16:39, Galen Johnson wrote:
>
>
>>Hey folks,
>>
>>
>>
>This is wheat
>
>
>> I'm curious about the way amanda backs up. If I'm reading the
>>docs, list and other resources correctly, AMANDA requires at
>>least 1 disklist entry per partition being backed up. It
>>requires that you have a tape per partition (not clear on this
>>point as it would seem to obliviate the need for a non-rewinding
>>device).
>>
>>
>>
>and this is frosted
>
>
>>Another part of my embattled mind is saying "no, don't be stupid!
>>It requires 1 entry per partition (or directory) in the disklist
>>file but will append the backups as needed to the tape device
>>until it can't put a particilar dump on it. It will then go to
>>the next tape and start the failed dump from the beginning."
>>
>>Which side is right (the wheat or frosted ;-) )? I don't know why
>>I'm having so much trouble with this but I suspect it's
>>information overload.
>>
>>
>
>Frosted :-)
>
>
>
>>Also, I currently am using a 7 tape changer (which I think I have
>>mtx talking to nicely but with some small eccentricities). I
>>currently have it setup as follows:
>>
>>dumpcycle 1 week
>>runspercycle 6
>>tapecycle 7 tapes
>>
>>
>You'll prefer to have at least 2x dumpcycle*runspercycle tapes in
>the rotation if you think about the ramifications of overwriting
>your last full backup and having it fail for some reason. Plus a
>few spares on the shelf of course :-)
>
>
Ok...I'm pretty sure I'm gonna have to change the number of runtapes to
at least 2 since the current system being backed up is almost through a
tape (using whatever software they used previously nad I'm guessing
hardware compression). Jon La Badie pointed out that since I've 3
magazines that my possession that tapecycle would really be 21.
>
>
>>runtapes 1 #I'm thinking of upping this to 2 or 3
>>
>>
>You can, but probably won't need to if the tapes are properly sized,
>the proper sizing being that a tape must be capable of holding any
>one disklist entry with room enough for a few incrementals too.
>
>
see above...
>
>
>>tpchanger "chg-scsi" # not sure about this yet
>>tapedev "/dev/nst0"
>>
>>
>This if you're going to use chg-scsi, will turn into the config
>number you use out of a multi-config bearing chg-scsi.conf file.
>
>
Actually need to change this to either chg-mtx or chg-zd-mtx...
>
>
>>rawtapedev "/dev/null"
>>
>>
>comment this one
>
>
Roger, wilco.
>
>
>>changerdev "/dev/sg0"
>>
>>
>This is whatever your dmesg file idents it as.
>
it is...I've been playing with the changer with mtx to get the feel for
the eccentricities (and it has some).
>
>
>
>>tapetype EXB-EZ17
>>
>>where EXB-EZ17 is defined by:
>>
>>define tapetype EXB-EZ17 {
>> comment "just produced by tapetype program"
>> length 18600 mbytes
>> filemark 623 kbytes
>> speed 2137 kps
>>}
>>
>>
>>The current plan is to set up the backups to run 1 full per week
>>with incrementals (yes, I know amanda does her own thing). There
>>are currently three 7-tape containers available which I plan to
>>use to allow off-site store for 1 container in rotation.
>>
>>
>
>amanda should know each tape as a unique identifier, so the
>recomendations above then become at least 3x plus spares, not 2x.
>Label them all sequentially. Put a cleaning tape in the last slot
>of each magazine, and if you're carefull, only using one tape a
>night, you can stay with a set day of the week to change the
>magazines, just be sure after changing the magazine that you do an
>"amtape /config/ reset" so she knows shes back to slot 1.
>
>As you build the disklist, do it incrementally so that she won't try
>and do more than one tapes worth of level 0's on any one nightly
>run.
>
>
not exactly sure how...yet.
>
>
>>Any input would be greatly appreciated. This is running Amanda
>>2.4.3b3 on a Slackware 8.1 OS using tar (not dump). I configured
>>the build to use /home/amanda/bin/tar (which is currently just a
>>copy of tar but could easily become a wrapper). I followed
>>Gene's advice and made myself a build script (since I found
>>myself building and rebuilding as I came across new material).
>>It's as follows:
>>
>>#!/bin/sh
>># Since I'm always forgetting to build it as the amanda user
>>if [ `whoami` != 'amanda' ]; then
>> echo
>> echo "WARNING!!!!"
>> echo "AMANDA needs to be configured and built by the
>>amanda user," echo "but must be installed by root."
>> echo
>> exit 1
>>fi
>>
>>
>
>Love it, can I steal it?
>
Help yourself...I basically stole your script... :-D...Jon La Badie also
had mention of some things he needs to do on his system...I may just mod
my script and throw it up for grabs.
>
>
>
>>make clean
>>rm -f config.status config.cache
>>./configure --prefix=/home/amanda \
>> --libdir=/usr/local/lib/amanda \
>> --mandir=/usr/local/man \
>> --with-user=amanda \
>> --with-group=disk \
>> --with-config=daily \
>> --with-configdir=/home/amanda/config \
>> --with-gnutar=/home/amanda/bin/tar \
>> --with-gnutar-listdir=/home/amanda/var \
>> --with-changer-device=/dev/sg0 \
>> --with-tape-device=/dev/nst0 \
>> --with-amandahosts \
>> --with-gnu-ld \
>> --with-db=db \
>> --with-debugging=/tmp/amanda-dbg
>>
>># Create directories that aren't created by make
>>if [ ! -d /home/amanda/var ]; then
>> mkdir /home/amanda/var
>>fi
>>
>>if [ ! -d /home/amanda/config ]; then
>> mkdir /home/amanda/config
>>fi
>>
>>
>>=G=
>>
>>
>
>Looks good with the above caveats. Welcome to the amanda world.
>
>
>
thx...I'm still skirting the atmosphere and turning red on planetfall.
With everyone's help thus far...I should bring it down nice and
easy...of course I still have the turbulence of samba ahead.
=G=
