AndrewSmart

I followed a different guide on this forum for creating the live USB in the first place. I didn't use unetbootin. This guide assumes:

1. You have two partitions on the live USB:
   1. The first containing the squashfs, vmlinuz, and initrd; this partition has the 'boot' flag.
   2. The second containing the rw persistence partition, labeled 'persistence'.
2. Your live-persistence.conf file contains just "union /".

Following this guide I had squashed the 2.3GB of used space to 550MB. The increased space usage is due to the updating process; if you want the space back we must re-squash everything into the squashfs. If you have a humongous USB, what you would gain from this guide is a some-what faster boot. I wish there were a way for this to be automated; but AFAIK that is not possible at this time.

1. First, you may have noticed if you run apt-get update, you may encounter errors if update-initramfs is triggered:

AndrewSmart

$ clinfo
Number of platforms:				 2
  Platform Profile:				 FULL_PROFILE
  Platform Version:				 OpenCL 1.1 CUDA 6.5.51
  Platform Name:				 NVIDIA CUDA
  Platform Vendor:				 NVIDIA Corporation
  Platform Extensions:				 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts 
  Platform Profile:				 FULL_PROFILE
  Platform Version:				 OpenCL 2.0 AMD-APP (1800.11)
  Platform Name:				 AMD Accelerated Parallel Processing

AndrewSmart

#!/usr/bin/env bash
set -e
source test/setup
use Test::More
clone-foo-and-bar
subrepo-clone-bar-into-foo

(
  cd $OWNER/bar
  add-new-files Bar2

AndrewSmart

#!/usr/bin/env bash
#Assumes system is not booted into persistence mode (omit persistence kernel parameters on boot in grub).

if grep -qs " persistence[ |$]" /proc/cmdline
then
	echo "Script not intended to be run in persistence mode."
	exit 1
fi
echo "Backing up files from rw branch which were moved into ro branch (the squashfs)."
cd /media/sdb2

AndrewSmart

#!/usr/bin/env bash

NEW_SQUASHFS_FILE='/media/sda1/tmp/filesystem.squashfs.xz'
APT_UPDATED=false

if ! grep -qs " persistence[ |$]" /proc/cmdline
then
	echo "Script intended to make squashfs from within live system, with persistence kernel parameter."
	exit
fi

AndrewSmart

#!/usr/bin/env bash
set -e

if [ "$1" == 'ReRun' ]; then
  set -x
else
  $0 ReRun 2>&1 | tee log
  exit 0
fi

AndrewSmart

asmart@E15048 ~/dev
$ git clone git@github.com:AndrewSmart/git-subrepo.git andrewsmart.git --branch=master
Cloning into 'andrewsmart.git'...
remote: Counting objects: 691, done.
remote: Compressing objects: 100% (370/370), done.
remote: Total 691 (delta 333), reused 604 (delta 283)
Receiving objects: 100% (691/691), 150.74 KiB | 0 bytes/s, done.
Resolving deltas: 100% (333/333), done.
Checking connectivity... done.

AndrewSmart

#!/usr/bin/env bash
mkdir lib p1 p2 && git init --bare lib && git init p1 && git init p2
git clone lib lib.git && cd lib.git && touch readme && git add readme && git commit -m "Initial lib" && git push && cd ..
cd p1 && touch p1 && git add p1 && git commit -m "Initial" && git subrepo clone ../lib lib -b master && cd ..
cd p2 && touch p2 && git add p2 && git commit -m "Initial" && git subrepo clone ../lib lib -b master && cd ../p1
echo "p1 initial add to subrepo" >> lib/readme && git add lib/readme && git commit -m "p1 initial add to subrepo" && git subrepo push --all
cd ../p2 && git subrepo pull --all
echo "p2 initial add to subrepo" >> lib/readme && git add lib/readme && git commit -m "p2 initial add to subrepo" && git subrepo push --all
cd ../p1 && git subrepo pull --all -v

AndrewSmart

$ make test
prove test/
test/args.t ...... ok
test/commands.t .. ok
test/compile.t ... ok
All tests successful.
Files=3, Tests=55, 170 wallclock secs ( 0.12 usr  0.05 sys + 50.01 cusr 119.52 csys = 169.70 CPU)
Result: PASS