Trying to make a variety of different virtualisation (VirtualBox & KVM) and containers (Docker) systems run together on a single virtual network on my home server. With help from various sources including:

• http://arjunstechblog.blogspot.com/2011/06/how-to-migrate-from-virtualbox-to-kvm.html

  [Post to be continued as work progresses!]

A very annoying 'feature' of SQLite, it treats INT & INTEGER as different when considering in CREATE TABLE if the PRIMARY KEY column in a table should be marked as the rowid (used in autoincrement) or not. So although the column is created as an integer, it won't be incremented, the default hidden rowid column will be used instead. See "rowid":https://www.sqlite.org/langcreatetable.html#rowid for the gory details.

So, in summary, always write INTEGER.

CREATE TABLE company (id INTEGER PRIMARY KEY, name VARCHAR(255);

Trying to be clever (always a mistake) I bought a 8GB RAM stick (Corsair XMS3) which I thought I could add to my aging Gigbyte GA-H55N-USB3 Mini-ITX motherboard (supports upto 8GB it claims) and then, when the call to the great motherboard in the sky came, I could transfer it to a new Intel NUC, add another 8GB stick and double upto 16GB.

I initally forgot it (Gigabyte board) could only support 8GB and stuck it in with one of the existing 2GB sticks, which seemed to work well until memory usage went over 2GB and suddenly the system crashed (no errors), presumably the memory wasn't really available or some timing issue stopped it working. Removing the 2GB stick though (so down just to 8GB, which should in theory be fine) has just lead to it getting stuck in a boot cycle, not even able to get to the BIOS. I've tried to reduce some of the memory options to the minimum and stuck everything on Auto but still it isn't picked up. Possible (see this lengthly exchange: http://www.tomshardware.co.uk/forum/280564-30-h55n-usb3-doesnt-post-rebooting-gskill-ripjaws) it could be something to do with the CPU, perhaps something wrong with the memory controller on the i3.

Anyway, the best laid plans... So the 8GB stick will be in storage for the moment until I order the Intel NUC.

Getting docker running on Debian 7 (with some stuff from testing, with home rolled kernel, i.e. all over the place)

• Enable thin provisioning for devicemapper/LVM in kernel
• Enable bridge module for networking in kernel
• Enable CONFIGNETFILTERXTMATCHADDRTYPE in kernel if not already enabled (See "Issue 4088":https://github.com/docker/docker/issues/4088) (needs Netfilter Advanced option on)
• Turn on IPV4 Forwarding in /etc/sysctl.conf (then run sysctl -p)
• Add non-root user to the docker group (adduser [name] docker) - Be aware this effectively gives root access - see "Docker Attack Surface":https://docs.docker.com/articles/security/#docker-daemon-attack-surface
• (Then if logged in su [username] to update your groups)

Let the docking begin!

Finally irritated enough by the hundreds of diff files apt-get update downloads to find an answer:

apt-get update -o Acquire::Pdiffs=false

for a session, or set that in /etc/apt/apt.conf. Of course if you are running this command often the diffs files make sense.

Recording this process on the off-chance I need it again:

git init [reponame] cvs co [reponame] cd [reponame] find . -name "CVS" -exec rm -rf {} \; # (Remove CVS subdirs, bit ugly) git add .

Now in CVS repo, use cvs2git tools - follow advice from the excellent blog post by Oliver Gorwits - - make sure you update the project name in options files

cvs2git --options=cvs2git.options --fallback-encoding utf-8

Now back in the git repo

cat ~/CVS/cvs2svn-tmp/git-{blob,dump}.dat | git fast-import

There may or may not be some updated files to commit

git status

cd .. git clone --bare [reponame] [reponame].git

Now follow the answer from ColinM from http://stackoverflow.com/questions/1683531/how-to-import-existing-git-repository-into-another or use subtree if you have git > 1.7.11

Trying to make sense of the various projects aiming to digital unwrap and read fragile scrolls.

EDUCE University of Kentucky

CPART (Brigham Young University)

Oxford Centre for Study of Ancient Documents

Queen Mary / Cardiff

CNR Institute for Microelectronics and Microsystems

test3

Trying out the f.lux software that adjusts the colour of your monitor to follow the time of day, so brighter during the day and warmer at night.

Update: f.lux good but only works on primary monitor, switched to redshift instead which handles both.