1. I no longer have access to Mac OS X 10.4 running on an Intel chip
2. I am actively transitioning to BackupPC

Below youll find the method I have been using to construct all the .pkg installers youll find on this site. If you have any questions about the process please post them in the comments.

You will need at least three installations of Mac OS X – one 10.4 on PPC, one 10.4 on Intel, and one 10.5 on any architecture. On each 10.4 installation, download the bacula source code, decompress it, and run the following command to compile it in a way that plays nice with the rest of Mac OS X

./configure --prefix=/usr/local --sysconfdir=/usr/local/etc \
--mandir=/usr/local/share/man --enable-client-only \
--with-openssl --with-tcp-wrappers --disable-dependency-tracking \
--with-working-dir=/var/bacula/working
make

With that done, copy the compiled binaries from each architecture to your Mac OS X 10.5 installation to build the pkg installer. The files in question are;

• src/filed/bacula-fd
• src/filed/bacula-fd.conf
• src/console/bconsole
• src/console/bconsole.conf

I use the architecture type to give them unique names… bacula-fd-ppc and bacula-fd-intel for example. After thats done, use lipo to combine the two binaries into one fat multi-arch binary

lipo -create bacula-fd-intel bacula-fd-ppc -output bacula-fd

Now do the same for bconsole

lipo -create bconsole-intel bconsole-ppc -output bconsole

Having done that you now need to set up a mock directory structure to place the binaries into. You can then use PackageMaker on Mac OS X to build the pkg installer from that mock directory. My directory looks like this;

Library
Library/LaunchDaemons
Library/LaunchDaemons/bacula-fd.plist
usr
usr/local
usr/local/bin
usr/local/bin/bconsole
usr/local/etc
usr/local/etc/bacula-fd.conf
usr/local/etc/bconsole.conf
usr/local/sbin
usr/local/sbin/bacula-fd
usr/local/share
usr/local/share/man
usr/local/share/man/man8
usr/local/share/man/man8/bacula-fd.8.gz
usr/local/share/man/man8/bconsole.8.gz
var
var/bacula
var/bacula/working

You can see where I’ve placed bacula-fd and bconsole as well as their conf files. There are some gzipped man pages in there too, which you can grab out of the compiled source tree and gzip manually. Finally there is a .plist file which is required to make auto startup/shutdown of bacula-fd happen on Mac OS X.

The last important bit to note is that I use some modified .conf files which have special placeholders for host names. I then use pre-inst and post-inst scripts in PackageMaker to look for previous versions of packages, insert the current hostname into the .conf files, etc. I have included my source tree and PackageMaker files and scripts below for the last version I released (2.4.4) for your reference.

After all the above is done and the directory structure is all set up you should be able to just fire up PackageMaker, change a few variables in it (set permissions, set version numbers, make sure proper pre and post-inst scripts are being used, etc.) and then build the pkg installer.

Enjoy :)

bacula_244_macosx_source.zip

After some testing I’m happy to say it appears to work smashingly. What follows is a somewhat more complete version of how to achieve the same results on Debian Lenny. Enjoy :)

The first thing that needs to be done is to get the debian sources for clvm and modify then to use openais. After that we will recompile new packages from that source, then set up openais on our cluster nodes.

Install all the dependencies we need to compile clvm

root@host:~# apt-get build-dep clvm
root@host:~# apt-get install libopenais-dev

Now download the source files and cd into our working directory

root@host:~# cd /usr/src/
root@host:/usr/src# apt-get source clvm
root@host:/usr/src# cd lvm2-2.02.39

Now we’ll modify a few files in the source:

• The first is debian/clvm.init. You’ll need to remove any references to cman or cluster.conf. You can download an already edited version here.
• The next is debian/control. Modify the dependies (lvm2 without the version number, openais in place of cman) and modify the comments accordingly. A pre-edited version is here.
• The last file is debian/rules. Replace cman by openais in the configure options, and add the PATH where to find the openais libs. Again, a pre-made version is here.

For clarities sake, here is the actual code block from debian/rules:

$(STAMPS_DIR)/setup-deb: SOURCE_DIR = $(BUILD_DIR)/source
$(STAMPS_DIR)/setup-deb: DIR = $(BUILD_DIR)/build-deb
$(STAMPS_DIR)/setup-deb: $(STAMPS_DIR)/source
        rm -rf $(DIR)
        cp -al $(SOURCE_DIR) $(DIR)
        cd $(DIR); \
        ./configure CFLAGS="$(CFLAGS)" \
		LDFLAGS="-L/usr/lib/openais" \
                $(CONFIGURE_FLAGS) \
                --with-optimisation="" \
                --with-clvmd=openais \
                --enable-readline
        touch $@

The last thing to do is update the internal version number of the clvm package and add some comments to the changelog:

root@host:/usr/src/lm2-2.02.39# dch -i

Now go ahead and compile the package:

root@host:/usr/src/lm2-2.02.39# dpkg-buildpackage -rfakeroot -uc -b

After the compliation completes you should have some shiny new .deb files in /usr/src. The one we are interested in is clvm_2.02.39-7.1_i386.deb (the actual version of yours may vary depending on what you put in the debian changelog in the previous step).

So now that weve got our custom version of clvm compiled, its time to move on the cluster nodes. On each node in the cluster, do the following…

Install openais and add a user for it:

root@node:~# apt-get install openais
root@node:~# mkdir -p /etc/ais
root@node:~# adduser --no-create-home --disabled-password --disabled-login --gecos openAIS ais

Now create the following config in /etc/ais/openais.conf. This is the most basic config you can have. All you need to do is set 192.168.1.0 to be your actual network address.

totem {
        version: 2
        secauth: off
        threads: 0
        interface {
                ringnumber: 0
                bindnetaddr: 192.168.1.0
                mcastaddr: 226.94.1.1
                mcastport: 5405
        }
}

openais does not include a proper debian init sript so you can download one here and save it as /etc/init.d/openais. After that is done, add it to the proper runlevels by issuing:

root@node:~# update-rc.d openais start 62 S . start 50 0 6 .

Now we can install our custom deb and turn on LVM clustering

root@node:~# dpkg -i clvm_2.02.39-7.1_i386.deb
root@node:~# sed -i 's/^    locking_type = 1$/    locking_type = 3/' /etc/lvm/lvm.conf

Thats it! Reboot your cluster nodes and they should all be cluster aware now :)

See the lkml.org mailing list post here

… and the townspeople rejoiced :)

For the impatient, the important bit is this:

DELETE channel,program FROM channel NATURAL LEFT JOIN program WHERE program.title IS NULL;

Thanks go to Mark Lord, Marvell Corporation, EMC Corporation and Red Hat, Inc. for the coding magic.

I was going to include a bunch of fancy id3 tag stuff but to be honest most of the id3 perl libraries out there arent that great to use. I may do something like that in the future though. Since I use quod libet which has a fantastic tagger built in, it isnt really an issue for me.


#!/usr/bin/perl

`flac -d "$_"`;
$_ =~ s/\.flac$/.wav/;
$target = $_;
$target =~ s/\.wav$/.mp3/;
`lame $lame_opt "$_" "$target"`;
`rm "$_"`;
}


C = (5/9)(F-32)

F = (9/5)C+32

while true; do { $SOMETHING }

Neat, huh? You can get the plugin here

Enjoy :-)


#!/bin/bash
#
# This file echoes a bunch of color codes to the
# terminal to demonstrate what's available. Each
# line is the color code of one forground color,
# out of 17 (default + 16 escapes), followed by a
# test use of that color on all nine background
# colors (default + 8 escapes).
#

for FGs in ' m' ' 1m' ' 30m' '1;30m' ' 31m' '1;31m' ' 32m' \
'1;32m' ' 33m' '1;33m' ' 34m' '1;34m' ' 35m' '1;35m' \
' 36m' '1;36m' ' 37m' '1;37m';
do FG=${FGs// /}
echo -en " $FGs \033[$FG $T "
for BG in 40m 41m 42m 43m 44m 45m 46m 47m;
do echo -en "$EINS \033[$FG\033[$BG $T \033[0m";
done
echo;
done
echo


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#!/usr/bin/perl

$num_slots = “20″;
$changer_device = “/dev/changer”;
$tape_device = “/dev/st0″;
$settle_time = “120″;

while ($_ < $num_slots) {

$_ += 1;

print “Loading tape from slot $_…\n”;
`mtx -f $changer_device load $_`;

print “Letting tape drive settle…\n”;
`sleep $settle_time`;

print “Rewinding tape…\n”;
`mt -f $tape_device rewind`;

print “Writing EOF to tape…\n”;
`mt -f $tape_device weof`;

print “Unloading tape…\n”;
`mtx -f $changer_device unload $_`;

print “Done!\n———-\n”;

}