</description>
</item>
+ <item>
+ <title>Now accepting bitcoins - anonymous and distributed p2p crypto-money</title>
+ <link>http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html</guid>
+ <pubDate>Fri, 10 Dec 2010 08:20:00 +0100</pubDate>
+ <description>
+<p>With this weeks lawless
+<a href="http://www.salon.com/news/opinion/glenn_greenwald/2010/12/06/wikileaks/index.html">governmental
+attacks</a> on Wikileak and
+<a href="http://www.salon.com/technology/dan_gillmor/2010/12/06/war_on_speech">free
+speech</a>, it has become obvious that PayPal, visa and mastercard can
+not be trusted to handle money transactions.
+A blog post from
+<a href="http://webmink.com/2010/12/06/now-accepting-bitcoin/">Simon
+Phipps on bitcoin</a> reminded me about a project that a friend of
+mine mentioned earlier. I decided to follow Simon's example, and get
+involved with <a href="http://www.bitcoin.org/">BitCoin</a>. I got
+some help from my friend to get it all running, and he even handed me
+some bitcoins to get started. I even donated a few bitcoins to Simon
+for helping me remember BitCoin.</p>
+
+<p>So, what is bitcoins, you probably wonder? It is a digital
+crypto-currency, decentralised and handled using peer-to-peer
+networks. It allows anonymous transactions and prohibits central
+control over the transactions, making it impossible for governments
+and companies alike to block donations and other transactions. The
+source is free software, and while the key dependency wxWidgets 2.9
+for the graphical user interface is missing in Debian, the command
+line client builds just fine. Hopefully Jonas
+<a href="http://bugs.debian.org/578157">will get the package into
+Debian</a> soon.</p>
+
+<p>Bitcoins can be converted to other currencies, like USD and EUR.
+There are <a href="http://www.bitcoin.org/trade">companies accepting
+bitcoins</a> when selling services and goods, and there are even
+currency "stock" markets where the exchange rate is decided. There
+are not many users so far, but the concept seems promising. If you
+want to get started and lack a friend with any bitcoins to spare,
+you can even get
+<a href="https://freebitcoins.appspot.com/">some for free</a> (0.05
+bitcoin at the time of writing). Use
+<a href="http://www.bitcoinwatch.com/">BitcoinWatch</a> to keep an eye
+on the current exchange rates.</p>
+
+<p>As an experiment, I have decided to set up bitcoind on one of my
+machines. If you want to support my activity, please send Bitcoin
+donations to the address
+<b>15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</b>. Thank you!</p>
+</description>
+ </item>
+
<item>
<title>Martin Bekkelund: En stille bønn om Datalagringsdirektivet</title>
<link>http://people.skolelinux.org/pere/blog/Martin_Bekkelund__En_stille_b__nn_om_Datalagringsdirektivet.html</link>
</description>
</item>
- <item>
- <title>Migrating Xen virtual machines using LVM to KVM using disk images</title>
- <link>http://people.skolelinux.org/pere/blog/Migrating_Xen_virtual_machines_using_LVM_to_KVM_using_disk_images.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Migrating_Xen_virtual_machines_using_LVM_to_KVM_using_disk_images.html</guid>
- <pubDate>Mon, 22 Nov 2010 11:20:00 +0100</pubDate>
- <description>
-<p>Most of the computers in use by the
-<a href="http://www.skolelinux.org/">Debian Edu/Skolelinux project</a>
-are virtual machines. And they have been Xen machines running on a
-fairly old IBM eserver xseries 345 machine, and we wanted to migrate
-them to KVM on a newer Dell PowerEdge 2950 host machine. This was a
-bit harder that it could have been, because we set up the Xen virtual
-machines to get the virtual partitions from LVM, which as far as I
-know is not supported by KVM. So to migrate, we had to convert
-several LVM logical volumes to partitions on a virtual disk file.</p>
-
-<p>I found
-<a href="http://searchnetworking.techtarget.com.au/articles/35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM">a
-nice recipe</a> to do this, and wrote the following script to do the
-migration. It uses qemu-img from the qemu package to make the disk
-image, parted to partition it, losetup and kpartx to present the disk
-image partions as devices, and dd to copy the data. I NFS mounted the
-new servers storage area on the old server to do the migration.</p>
-
-<pre>
-#!/bin/sh
-
-# Based on
-# http://searchnetworking.techtarget.com.au/articles/35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM
-
-set -e
-set -x
-
-if [ -z "$1" ] ; then
- echo "Usage: $0 &lt;hostname&gt;"
- exit 1
-else
- host="$1"
-fi
-
-if [ ! -e /dev/vg_data/$host-disk ] ; then
- echo "error: unable to find LVM volume for $host"
- exit 1
-fi
-
-# Partitions need to be a bit bigger than the LVM LVs. not sure why.
-disksize=$( lvs --units m | grep $host-disk | awk '{sum = sum + $4} END { print int(sum * 1.05) }')
-swapsize=$( lvs --units m | grep $host-swap | awk '{sum = sum + $4} END { print int(sum * 1.05) }')
-totalsize=$(( ( $disksize + $swapsize ) ))
-
-img=$host.img
-#dd if=/dev/zero of=$img bs=1M count=$(( $disksize + $swapsize ))
-qemu-img create $img ${totalsize}MMaking room on the Debian Edu/Sqeeze DVD
-
-parted $img mklabel msdos
-parted $img mkpart primary linux-swap 0 $disksize
-parted $img mkpart primary ext2 $disksize $totalsize
-parted $img set 1 boot on
-
-modprobe dm-mod
-losetup /dev/loop0 $img
-kpartx -a /dev/loop0
-
-dd if=/dev/vg_data/$host-disk of=/dev/mapper/loop0p1 bs=1M
-fsck.ext3 -f /dev/mapper/loop0p1 || true
-mkswap /dev/mapper/loop0p2
-
-kpartx -d /dev/loop0
-losetup -d /dev/loop0
-</pre>
-
-<p>The script is perhaps so simple that it is not copyrightable, but
-if it is, it is licenced using GPL v2 or later at your discretion.</p>
-
-<p>After doing this, I booted a Debian CD in rescue mode in KVM with
-the new disk image attached, installed grub-pc and linux-image-686 and
-set up grub to boot from the disk image. After this, the KVM machines
-seem to work just fine.</p>
-</description>
- </item>
-
</channel>
</rss>
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