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#####                                                       BDisk                                                               #####
#####                                                                                                                            #####
#####    Written by Brent Saner                                                                                                  #####
#####    <bts@square-r00t.net>                                                                                                   #####
#####    Built upon my (Brent's) 'BDisk' ISO-building framework (http://bdisk.square-r00t.net)                                   #####
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## Why Arch? ##
Because it's a largely easy-to-use, well-documented (https://wiki.archlinux.org/) distro. It's no-frills and incredibly
flexible/customizable, and can be made rather slim. It's also very friendly to run as a chroot inside any other distro.

All commands below should be issued in the root working directory of this git repository. (For me, this is
/opt/dev/work/BDisk but this may be entirely different for you, depending on where you cloned the repository to.)

!!!!!! WARNING !!!!!!!
I do NOT recommend running this on a machine that is using wireless, as it will download a LOT of data.
If you ignore this warning, be prepared to explain to anyone you share your wifi with why Facebook takes 20 seconds to load,
because they WILL ask.

It should be fine over ethernet, since hardware switches are much faster and efficient than a single duplex wireless radio.

Future versions, once this project has a dumping ground, will fetch highly compressed snapshotted chroot filesystems instead
of dynamically building the entire install chroots (both x86_64 and i686) instead (with the option of building fresh locally,
disabled by default).
Till then, sorry for the inconvenience.
!!!!!!!!!!!!!!!!!!!!!!

## Prerequisites ##
-At least ~20Gb disk space free (remember, you need room for not only four chroots (one developing and one staging for i686/x86_64),
but also disk space for working, the finished ISO(s), etc.)

-The following packages installed on the build host:
(NOTE: future versions will have dependencies checked automatically and installed if necessary,
depending on distro your host build machine is. the OS detection and package installation component of that isn't
done yet though. 2014.10.31)
(NOTE2: Make sure all the packages you specify are valid package names. A mistyped package name will cause the chroot creation to
break and everything else will break as a result.)

curl
dosfstools
libisoburn ("libisofs" on CentOS)
lynx
rsync
sed
squashfs-tools
xorriso (in RPMForge repo for CentOS 7)
xz

and *probably* a few others. the scripts run with set -e for the most part, so if something's missed, you'll know.
oh, you will know.


## (Re)Building ##
$ sudo bin/build.sh

Yeah. It's that easy. The finished product is in iso/.

Build output should look something like this:


[root@dawid BDisk]# time nice -n "-19" bin/build.sh 
You have not configured a build.conf OR you are not running from the project's root directory (the git repository's working directory).
 If you are indeed in the correct directory, you may copy the sample at extra/build.conf.sample,
 edit it for appropriate values, and copy to <PROJECT ROOT>/build.conf
For now, though, I am copying over the default.
Checking directory structure and creating lockfile at /opt/dev/work/BDisk/lockfile.lck...
/opt/dev/work/BDisk/root.i686 does not exist - creating.
/opt/dev/work/BDisk/root.x86_64 does not exist - creating.
/opt/dev/work/BDisk/build32 does not exist - creating.
/opt/dev/work/BDisk/build64 does not exist - creating.
/opt/dev/work/BDisk/iso does not exist - creating.
/opt/dev/work/BDisk/temp/bdisk does not exist - creating.
/opt/dev/work/BDisk/temp/FPOS does not exist - creating.
/opt/dev/work/BDisk/src does not exist - creating.
/opt/dev/work/BDisk/tftpboot does not exist - creating.
/opt/dev/work/BDisk/http/FPOS does not exist - creating.
/opt/dev/work/BDisk/logs does not exist - creating.
No existing chroot environment found. Creating...
Now importing settings/variables.
Checking/fetching snapshots...
Extracting snapshots. This will take a while...
Configuring snapshots...
Initializing chroots...
Prepping /opt/dev/work/BDisk/root.i686. This will take a while...
...Key initializing...Done.
...Importing keys...Done.
...Installing base packages...Done.
...Upgrading any outdated packages...Done. Finishing/cleaning up...
Prepping /opt/dev/work/BDisk/root.x86_64. This will take a while...
...Key initializing...Done.
...Importing keys...Done.
...Installing base packages...Done.
...Upgrading any outdated packages...Done. Finishing/cleaning up...
Installing common packages...
...Packages installing to /opt/dev/work/BDisk/root.i686...Compiling kernel sources...Regular packages......Creating bdisk user...Done.
Done.
...Packages installing to /opt/dev/work/BDisk/root.x86_64...Compiling kernel sources...Regular packages......Creating bdisk user...Done.
Done.
Installing packages for 32-bit...
Done.
Installing packages for 64-bit...
Done.
Syncing overlay...
Done.
Chroot setup complete.
Checking for appropriate kernel version and mksquashfs version...
Data is not sync'd to buildroot; syncing...
Syncing important files to /opt/dev/work/BDisk/build64 for building the squashed filesystem (this may take some time)...
Compressing the package DB...
cp: ‘/opt/dev/work/BDisk/build64/usr/share/zoneinfo/EST5EDT’ and ‘/opt/dev/work/BDisk/build64/etc/localtime’ are the same file
cp: ‘/opt/dev/work/BDisk/root.x86_64/usr/share/zoneinfo/EST5EDT’ and ‘/opt/dev/work/BDisk/root.x86_64/etc/localtime’ are the same file
Cleaning up unnecessary cruft in /opt/dev/work/BDisk/build64...
[64-bit] Now generating the squashed image (if we need to) and hashes. This may take some time.
[64-bit] Squashing filesystem. This can take a while depending on the size of your chroot(s).
[64-bit] Copying files for PXE, and ISO building, please be patient.
Data is not sync'd to buildroot; syncing...
Syncing important files to /opt/dev/work/BDisk/build32 for building the squashed filesystem (this may take some time)...
Compressing the package DB...
cp: ‘/opt/dev/work/BDisk/build32/usr/share/zoneinfo/EST5EDT’ and ‘/opt/dev/work/BDisk/build32/etc/localtime’ are the same file
cp: ‘/opt/dev/work/BDisk/root.i686/usr/share/zoneinfo/EST5EDT’ and ‘/opt/dev/work/BDisk/root.i686/etc/localtime’ are the same file
Cleaning up unnecessary cruft in /opt/dev/work/BDisk/build32...
[32-bit] Now generating the squashed image (if we need to) and hashes. This may take some time.
[32-bit] Squashing filesystem. This can take a while depending on the size of your chroot(s).
[32-bit] Copying files for PXE, and ISO building, please be patient.
Building the actual .iso image. This may take a while.
Setting up EFI stuff...
Checking/fetching UEFI shells...
Generating the EFI embedded FAT filesystem...
EFI configuration complete...
ISO generated; size is 1.3G.
You can find it at /opt/dev/work/BDisk/iso/bdisk-v1.04-a8666bd-any.iso
Cleaning up some stuff leftover from the build...
Finished successfully!

real    250m48.104s
user    163m6.046s
sys     8m26.573s





If you want more verbosity, check out the logs/ directory.