<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Idea_for_a_change_to_LDAP_schemas_allowing_DNS_and_DHCP_info_to_be_combined_into_one_object.html">Idea for a change to LDAP schemas allowing DNS and DHCP info to be combined into one object</a></div>
- <div class="date">2010-06-24 00:35</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/How_to_test_if_a_laptop_is_working_with_Linux.html">How to test if a laptop is working with Linux</a></div>
+ <div class="date">2010-12-22 14:55</div>
<div class="body">
-<p>A while back, I
-<a href="http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html">complained
-about the fact</a> that it is not possible with the provided schemas
-for storing DNS and DHCP information in LDAP to combine the two sets
-of information into one LDAP object representing a computer.</p>
-
-<p>In the mean time, I discovered that a simple fix would be to make
-the dhcpHost object class auxiliary, to allow it to be combined with
-the dNSDomain object class, and thus forming one object for one
-computer when storing both DHCP and DNS information in LDAP.</p>
-
-<p>If I understand this correctly, it is not safe to do this change
-without also changing the assigned number for the object class, and I
-do not know enough about LDAP schema design to do that properly for
-Debian Edu.</p>
-
-<p>Anyway, for future reference, this is how I believe we could change
-the
-<a href="http://tools.ietf.org/html/draft-ietf-dhc-ldap-schema-00">DHCP
-schema</a> to solve at least part of the problem with the LDAP schemas
-available today from IETF.</p>
+<p>The last few days I have spent at work here at the <a
+href="http://www.uio.no/">University of oslo</a> testing if the new
+batch of computers will work with Linux. Every year for the last few
+years the university have organized shared bid of a few thousand
+computers, and this year HP won the bid. Two different desktops and
+five different laptops are on the list this year. We in the UNIX
+group want to know which one of these computers work well with RHEL
+and Ubuntu, the two Linux distributions we currently handle at the
+university.</p>
+
+<p>My test method is simple, and I share it here to get feedback and
+perhaps inspire others to test hardware as well. To test, I PXE
+install the OS version of choice, and log in as my normal user and run
+a few applications and plug in selected pieces of hardware. When
+something fail, I make a note about this in the test matrix and move
+on. If I have some spare time I try to report the bug to the OS
+vendor, but as I only have the machines for a short time, I rarely
+have the time to do this for all the problems I find.</p>
+
+<p>Anyway, to get to the point of this post. Here is the simple tests
+I perform on a new model.</p>
-<pre>
---- dhcp.schema (revision 65192)
-+++ dhcp.schema (working copy)
-@@ -376,7 +376,7 @@
- objectclass ( 2.16.840.1.113719.1.203.6.6
- NAME 'dhcpHost'
- DESC 'This represents information about a particular client'
-- SUP top
-+ SUP top AUXILIARY
- MUST cn
- MAY (dhcpLeaseDN $ dhcpHWAddress $ dhcpOptionsDN $ dhcpStatements $ dhcpComments $ dhcpOption)
- X-NDS_CONTAINMENT ('dhcpService' 'dhcpSubnet' 'dhcpGroup') )
-</pre>
+<ul>
+
+<li>Is PXE installation working? I'm testing with RHEL6, Ubuntu Lucid
+and Ubuntu Maverik at the moment. If I feel like it, I also test with
+RHEL5 and Debian Edu/Squeeze.</li>
+
+<li>Is X.org working? If the graphical login screen show up after
+installation, X.org is working.</li>
+
+<li>Is hardware accelerated OpenGL working? Running glxgears (in
+package mesa-utils on Ubuntu) and writing down the frames per second
+reported by the program.</li>
+
+<li>Is sound working? With Gnome and KDE, a sound is played when
+logging in, and if I can hear this the test is successful. If there
+are several audio exits on the machine, I try them all and check if
+the Gnome/KDE audio mixer can control where to send the sound. I
+normally test this by playing
+<a href="http://www.nuug.no/aktiviteter/20101012-chef/ ">a HTML5
+video</a> in Firefox/Iceweasel.</li>
+
+<li>Is the USB subsystem working? I test this by plugging in a USB
+memory stick and see if Gnome/KDE notices this.</li>
-<p>I very much welcome clues on how to do this properly for Debian
-Edu/Squeeze. We provide the DHCP schema in our debian-edu-config
-package, and should thus be free to rewrite it as we see fit.</p>
+<li>Is the CD/DVD player working? I test this by inserting any CD/DVD
+I have lying around, and see if Gnome/KDE notices this.</li>
+
+<li>Is any built in camera working? Test using cheese, and see if a
+picture from the v4l device show up.</li>
+
+<li>Is bluetooth working? Use the Gnome/KDE browsing tool to see if
+any bluetooth devices are discovered. In my office, I normally see a
+few.</li>
+
+<li>For laptops, is the SD or Compaq Flash reader working. I have
+memory modules lying around, and stick them in and see if Gnome/KDE
+notice this.</li>
+
+<li>For laptops, is suspecd/hibernate working? I'm testing if the
+special button work, and if the laptop continue to work after
+resume.</li>
+
+<li>For laptops, is the extra buttons working, like audio level,
+adjusting background light, switching on/off external video output,
+switching on/off wifi, bluetooth, etc? The set of buttons differ from
+laptop to laptop, so I just write down which are working and which are
+not.</li>
+
+<li>Some laptops have smart card readers, finger print readers,
+acceleration sensors etc. I rarely test these, as I do not know how
+to quickly test if they are working or not, so I only document their
+existence.</li>
+
+</ul>
-<p>If you want to help out with implementing this for Debian Edu,
-please contact us on debian-edu@lists.debian.org.</p>
+<p>By now I suspect you are really curious what the test results are
+for the HP machines I am testing. I'm not done yet, so I will report
+the test results later. For now I can report that HP 8100 Elite work
+fine, and hibernation fail with HP EliteBook 8440p on Ubuntu Lucid,
+and audio fail on RHEL6. Ubuntu Maverik worked with 8440p. As you
+can see, I have most machines left to test. One interesting
+observation is that Ubuntu Lucid has almost twice the framerate than
+RHEL6 with glxgears. No idea why.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Calling_tasksel_like_the_installer__while_still_getting_useful_output.html">Calling tasksel like the installer, while still getting useful output</a></div>
- <div class="date">2010-06-16 14:55</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Some_thoughts_on_BitCoins.html">Some thoughts on BitCoins</a></div>
+ <div class="date">2010-12-11 15:10</div>
<div class="body">
-<p>A few times I have had the need to simulate the way tasksel
-installs packages during the normal debian-installer run. Until now,
-I have ended up letting tasksel do the work, with the annoying problem
-of not getting any feedback at all when something fails (like a
-conffile question from dpkg or a download that fails), using code like
-this:
-
-<blockquote><pre>
-export DEBIAN_FRONTEND=noninteractive
-tasksel --new-install
-</pre></blockquote>
-
-This would invoke tasksel, let its automatic task selection pick the
-tasks to install, and continue to install the requested tasks without
-any output what so ever.
-
-Recently I revisited this problem while working on the automatic
-package upgrade testing, because tasksel would some times hang without
-any useful feedback, and I want to see what is going on when it
-happen. Then it occured to me, I can parse the output from tasksel
-when asked to run in test mode, and use that aptitude command line
-printed by tasksel then to simulate the tasksel run. I ended up using
-code like this:
-
-<blockquote><pre>
-export DEBIAN_FRONTEND=noninteractive
-cmd="$(in_target tasksel -t --new-install | sed 's/debconf-apt-progress -- //')"
-$cmd
-</pre></blockquote>
-
-<p>The content of $cmd is typically something like "<tt>aptitude -q
---without-recommends -o APT::Install-Recommends=no -y install
-~t^desktop$ ~t^gnome-desktop$ ~t^laptop$ ~pstandard ~prequired
-~pimportant</tt>", which will install the gnome desktop task, the
-laptop task and all packages with priority standard , required and
-important, just like tasksel would have done it during
-installation.</p>
-
-<p>A better approach is probably to extend tasksel to be able to
-install packages without using debconf-apt-progress, for use cases
-like this.</p>
+<p>As I continue to explore
+<a href="http://www.bitcoin.org/">BitCoin</a>, I've starting to wonder
+what properties the system have, and how it will be affected by laws
+and regulations here in Norway. Here are some random notes.</p>
+
+<p>One interesting thing to note is that since the transactions are
+verified using a peer to peer network, all details about a transaction
+is known to everyone. This means that if a BitCoin address has been
+published like I did with mine in my initial post about BitCoin, it is
+possible for everyone to see how many BitCoins have been transfered to
+that address. There is even a web service to look at the details for
+all transactions. There I can see that my address
+<a href="http://blockexplorer.com/address/15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a>
+have received 16.06 Bitcoin, the
+<a href="http://blockexplorer.com/address/1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3">1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3</a>
+address of Simon Phipps have received 181.97 BitCoin and the address
+<a href="http://blockexplorer.com/address/1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt">1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt</A>
+of EFF have received 2447.38 BitCoins so far. Thank you to each and
+every one of you that donated bitcoins to support my activity. The
+fact that anyone can see how much money was transfered to a given
+address make it more obvious why the BitCoin community recommend to
+generate and hand out a new address for each transaction. I'm told
+there is no way to track which addresses belong to a given person or
+organisation without the person or organisation revealing it
+themselves, as Simon, EFF and I have done.</p>
+
+<p>In Norway, and in most other countries, there are laws and
+regulations limiting how much money one can transfer across the border
+without declaring it. There are money laundering, tax and accounting
+laws and regulations I would expect to apply to the use of BitCoin.
+If the Skolelinux foundation
+(<a href="http://linuxiskolen.no/slxdebianlabs/donations.html">SLX
+Debian Labs</a>) were to accept donations in BitCoin in addition to
+normal bank transfers like EFF is doing, how should this be accounted?
+Given that it is impossible to know if money can across the border or
+not, should everything or nothing be declared? What exchange rate
+should be used when calculating taxes? Would receivers have to pay
+income tax if the foundation were to pay Skolelinux contributors in
+BitCoin? I have no idea, but it would be interesting to know.</p>
+
+<p>For a currency to be useful and successful, it must be trusted and
+accepted by a lot of users. It must be possible to get easy access to
+the currency (as a wage or using currency exchanges), and it must be
+easy to spend it. At the moment BitCoin seem fairly easy to get
+access to, but there are very few places to spend it. I am not really
+a regular user of any of the vendor types currently accepting BitCoin,
+so I wonder when my kind of shop would start accepting BitCoins. I
+would like to buy electronics, travels and subway tickets, not herbs
+and books. :) The currency is young, and this will improve over time
+if it become popular, but I suspect regular banks will start to lobby
+to get BitCoin declared illegal if it become popular. I'm sure they
+will claim it is helping fund terrorism and money laundering (which
+probably would be true, as is any currency in existence), but I
+believe the problems should be solved elsewhere and not by blaming
+currencies.</p>
+
+<p>The process of creating new BitCoins is called mining, and it is
+CPU intensive process that depend on a bit of luck as well (as one is
+competing against all the other miners currently spending CPU cycles
+to see which one get the next lump of cash). The "winner" get 50
+BitCoin when this happen. Yesterday I came across the obvious way to
+join forces to increase ones changes of getting at least some coins,
+by coordinating the work on mining BitCoins across several machines
+and people, and sharing the result if one is lucky and get the 50
+BitCoins. Check out
+<a href="http://www.bluishcoder.co.nz/bitcoin-pool/">BitCoin Pool</a>
+if this sounds interesting. I have not had time to try to set up a
+machine to participate there yet, but have seen that running on ones
+own for a few days have not yield any BitCoins througth mining
+yet.</p>
+
+<p>Update 2010-12-15: Found an <a
+href="http://inertia.posterous.com/reply-to-the-underground-economist-why-bitcoi">interesting
+criticism</a> of bitcoin. Not quite sure how valid it is, but thought
+it was interesting to read. The arguments presented seem to be
+equally valid for gold, which was used as a currency for many years.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Vinmonopolet_bryter_loven___penlyst___og_flere_planlegger____gj__re_det_samme.html">Vinmonopolet bryter loven åpenlyst - og flere planlegger å gjøre det samme</a></div>
- <div class="date">2010-06-16 11:00</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Pornoskannerne_p___flyplassene_bedrer_visst_ikke_sikkerheten.html">Pornoskannerne på flyplassene bedrer visst ikke sikkerheten</a></div>
+ <div class="date">2010-12-11 10:45</div>
<div class="body">
-<p><a href="http://www.dagbladet.no/2010/06/16/nyheter/innenriks/streik/arbeidsliv/12157858/">Dagbladet
-melder</a> at Vinmonopolet med bakgrunn i vekterstreiken som pågår i
-Norge for tiden, har bestemt seg for med vitende og vilje å bryte
-sentralbanklovens paragraf 14 ved å nekte folk å betale med
-kontanter, og at flere butikker planlegger å følge deres eksempel.
-Jeg synes det er hårreisende hvis de slipper unna med et slikt
-soleklart lovbrudd, og lurer på hva slags muligheter jeg vil ha hvis
-jeg blir nektet å handle med kontanter. Jeg handler i hovedsak med
-kontanter selv, da jeg anser det som en borgerrett å kunne handle
-anonymt uten at det blir registrert. For meg er det et angrep på mitt
-personvern å nekte å ta imot kontant betaling.</p>
-
-<p><a href="http://www.lovdata.no/all/tl-19850524-028-003.html#14">Paragrafen
-i sentralbankloven</a> lyder:</p>
-
-<blockquote>
-<p>§ 14. Tvungent betalingsmiddel</p>
-
-<p>Bankens sedler og mynter er tvungent betalingsmiddel i Norge. Ingen
-er pliktig til i én betaling å ta imot mer enn femogtyve mynter av
-hver enhet.</p>
-
-<p>Sterkt skadde sedler og mynter er ikke tvungent
-betalingsmiddel. Banken gir nærmere forskrifter om erstatning for
-bortkomne, brente eller skadde sedler og mynter.</p>
-
-<p>Selv om en avtale inneholder klausul om betaling av en
-pengeforpliktelse i gullverdi, kan skyldneren frigjøre seg med tvungne
-betalingsmidler uten hensyn til denne klausul.</p>
-</blockquote>
-
-<p>Det er med bakgrunn i denne lovet ikke tillatt å nekte å ta imot
-kontakt betaling. Det er en lov jeg har sans for, og som jeg mener må
-håndheves strengt.</p>
+<p>Via <a href="http://webmink.com/2010/12/10/links-for-2010-12-10/">en
+blogpost fra Simon Phipps i går</a>, fant jeg en referanse til
+<a href="http://www.washingtontimes.com/news/2010/dec/9/exposed-tsas-x-rated-scanner-fraud/">en
+artikkel i Washington Times</a> som igjen refererer til en artikkel i
+det fagfellevurderte tidsskriftet Journal of Transportation Security
+med tittelen
+"<a href="http://springerlink.com/content/g6620thk08679160/fulltext.html">An
+evaluation of airport x-ray backscatter units based on image
+characteristics</a>" som enkelt konstaterer at
+<a href="http://www.dailysquib.co.uk/?a=2389&c=124">pornoscannerne</a>
+som kler av reisende på flyplasser ikke er i stand til å avsløre det
+produsenten og amerikanske myndigheter sier de skal avsløre. Kort
+sagt, de bedrer ikke sikkerheten. Reisende må altså la ansatte på
+flyplasser <a href="http://www.thousandsstandingaround.org/">se dem
+nakne eller la seg beføle i skrittet</a> uten grunn. Jeg vil
+fortsette å nekte å bruke disse pornoskannerne, unngå flyplasser der
+de er tatt i bruk, og reise med andre transportmidler enn fly hvis jeg
+kan.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Officeshots_taking_shape.html">Officeshots taking shape</a></div>
- <div class="date">2010-06-13 11:40</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Martin_Bekkelund__En_stille_b__nn_om_Datalagringsdirektivet.html">Martin Bekkelund: En stille bønn om Datalagringsdirektivet</a></div>
+ <div class="date">2010-12-09 21:25</div>
<div class="body">
-<p>For those of us caring about document exchange and
-interoperability, <a href="http://www.officeshots.org/">OfficeShots</a>
-is a great service. It is to ODF documents what
-<a href="http://browsershots.org/">BrowserShots</a> is for web
-pages.</p>
-
-<p>A while back, I was contacted by Knut Yrvin at the part of Nokia
-that used to be Trolltech, who wanted to help the OfficeShots project
-and wondered if the University of Oslo where I work would be
-interested in supporting the project. I helped him to navigate his
-request to the right people at work, and his request was answered with
-a spot in the machine room with power and network connected, and Knut
-arranged funding for a machine to fill the spot. The machine is
-administrated by the OfficeShots people, so I do not have daily
-contact with its progress, and thus from time to time check back to
-see how the project is doing.</p>
-
-<p>Today I had a look, and was happy to see that the Dell box in our
-machine room now is the host for several virtual machines running as
-OfficeShots factories, and the project is able to render ODF documents
-in 17 different document processing implementation on Linux and
-Windows. This is great.</p>
+<p><a href="http://www.bekkelund.net/">Martin Bekkelund</a> ved
+<a href="http://www.friprog.no/">friprog-senteret</a> har skrevet
+følgende
+<a href="http://www.bekkelund.net/2010/12/09/en-stille-bonn/">korte
+oppsummering</a> rundt datalagringsdirektivet, som jeg videreformidler
+her.</p>
+
+<p><blockquote><strong>Det pågår i disse dager en intens diskusjon om
+innføring av Datalagringsdirektivet (<acronym
+title="Datalagringsdirektivet">DLD</acronym>) i norsk rett. Kanskje
+har du gjort deg opp en mening, kanskje er du usikker. I begge
+tilfeller ber jeg deg lese videre.</strong></p>
+
+<p>Samtlige fagmiljøer, både i Norge og EU, har konkludert med at
+<acronym title="Datalagringsdirektivet">DLD</acronym> ikke bør
+innføres på nåværende tidspunkt. Den tekniske kvaliteten på direktivet
+er dårlig, det griper uforholdsmessig inn i personvernet, det har
+store mangler og viktige spørsmål som hvem som skal ha tilgang og
+hvordan data skal lagres er fortsatt uavklart.</p>
+
+<ul>
+<li><a href="http://ikt-norge.no/norge-kan-slippe-datalagringsdirektivet/">EU-ekspertene sier</a> at konsekvensene av å benytte vetoretten er minimale</li>
+<li><a href="http://www.regjeringen.no/pages/2281080/Deninternasjonalejuristkommisjon.pdf">Juristene påpeker</a> at direktivet er i strid med EMK</li>
+<li><a href="http://www.dagbladet.no/2010/12/06/kultur/debatt/kronikk/dld/personvern/14594699/">Datatilsynet sier</a> direktivet får store konsekvenser for personvernet og at direktivet er irreversibelt</li>
+<li><a href="http://www.bekkelund.net/?s=dld">Teknologene sier</a> at sikker lagring ikke er mulig, at det er svært enkelt å omgå og mulig å manipulere data og produsere falske beviser</li>
+<li><a href="http://www.regjeringen.no/pages/2281080/NJ_247460_1_P.pdf">Pressen sier</a> nei av hensyn til kildevernet</li>
+<li>Det er store <a href="http://tetzschner.blogspot.com/2010/03/den-tyske-forfatningsdomstol.html">interne</a> <a href="http://stoppdld.no/2010/03/02/datalagring-stoppet-av-tysk-forfatningsdomstol/">stridigheter</a> i EU. Blant annet har den tyske forfatningsdomstolen funnet at måten <acronym title="Datalagringsdirektivet">DLD</acronym> er innført på er i strid med tysk grunnlov</li>
+<li>Alle de store <a href="http://www.bekkelund.net/2010/12/08/lokasjonsdata-og-datalagringsdirektivet/">operatørene og tilbyderne sier nei</a>, av tekniske og personvernmessige årsaker</li>
+</ul>
+
+<p>Jeg liker å tro at jeg er en hyggelig fyr. Jeg har et rent
+rulleblad, og med unntak av to fartsbøter har jeg aldri vært en byrde
+for samfunnet. Det akter jeg å fortsette med. Det er mange som meg,
+lovlydige, pliktoppfyllende borgere som aldri vil utgjøre en trussel
+mot noe som helst. Vi synes derfor det er trist og sårende at all vår
+atferd skal overvåkes døgnkontinuerlig.</p>
+
+<p><strong>Understøttet av faglige vurderinger kan du trygt si nei til
+<acronym title="Datalagringsdirektivet">DLD</acronym>.</strong></p>
+
+<p><a href="http://www.bekkelund.net/kontakt/">Ta kontakt med meg</a>
+hvis du har spørsmål om <acronym
+title="Datalagringsdirektivet">DLD</acronym>, uansett hva det måtte
+gjelde.</p>
+
+<p class="info">Denne teksten er å anse som <a
+href="http://creativecommons.org/licenses/publicdomain/"><em>Public
+Domain</em></a>. Spre den videre til alle som kan ha nytte av
+den!</p>
+</blockquote></p>
+
+<p>Siste <a href="http://www.nettavisen.no/it/article3043918.ece">melding
+fra Nettavisen</a> er at regjeringen planlegger å fremme sitt forslag
+til implementering av datalagringsdirektivet i morgen, i ly av
+fredprisutdelingen for å få minst mulig pressedekning om saken. Vi
+får snart se om det stemmer.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades__removals_by_apt_and_aptitude.html">Lenny->Squeeze upgrades, removals by apt and aptitude</a></div>
- <div class="date">2010-06-13 09:05</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Student_group_continue_the_work_on_my_Reprap_3D_printer.html">Student group continue the work on my Reprap 3D printer</a></div>
+ <div class="date">2010-12-09 19:30</div>
<div class="body">
-<p>My
-<a href="http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html">testing
-of Debian upgrades</a> from Lenny to Squeeze continues, and I've
-finally made the upgrade logs available from
-<a href="http://people.skolelinux.org/pere/debian-upgrade-testing/">http://people.skolelinux.org/pere/debian-upgrade-testing/</a>.
-I am now testing dist-upgrade of Gnome and KDE in a chroot using both
-apt and aptitude, and found their differences interesting. This time
-I will only focus on their removal plans.</p>
-
-<p>After installing a Gnome desktop and the laptop task, apt-get wants
-to remove 72 packages when dist-upgrading from Lenny to Squeeze. The
-surprising part is that it want to remove xorg and all
-xserver-xorg-video* drivers. Clearly not a good choice, but I am not
-sure why. When asking aptitude to do the same, it want to remove 129
-packages, but most of them are library packages I suspect are no
-longer needed. Both of them want to remove bluetooth packages, which
-I do not know. Perhaps these bluetooth packages are obsolete?</p>
-
-<p>For KDE, apt-get want to remove 82 packages, among them kdebase
-which seem like a bad idea and xorg the same way as with Gnome. Asking
-aptitude for the same, it wants to remove 192 packages, none which are
-too surprising.</p>
-
-<p>I guess the removal of xorg during upgrades should be investigated
-and avoided, and perhaps others as well. Here are the complete list
-of planned removals. The complete logs is available from the URL
-above. Note if you want to repeat these tests, that the upgrade test
-for kde+apt-get hung in the tasksel setup because of dpkg asking
-conffile questions. No idea why. I worked around it by using
-'<tt>echo >> /proc/<em>pidofdpkg</em>/fd/0</tt>' to tell dpkg to
-continue.</p>
-
-<p><b>apt-get gnome 72</b>
-<br>bluez-gnome cupsddk-drivers deskbar-applet gnome
- gnome-desktop-environment gnome-network-admin gtkhtml3.14
- iceweasel-gnome-support libavcodec51 libdatrie0 libgdl-1-0
- libgnomekbd2 libgnomekbdui2 libmetacity0 libslab0 libxcb-xlib0
- nautilus-cd-burner python-gnome2-desktop python-gnome2-extras
- serpentine swfdec-mozilla update-manager xorg xserver-xorg
- xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-evdev
- xserver-xorg-input-kbd xserver-xorg-input-mouse
- xserver-xorg-input-synaptics xserver-xorg-input-wacom
- xserver-xorg-video-all xserver-xorg-video-apm xserver-xorg-video-ark
- xserver-xorg-video-ati xserver-xorg-video-chips
- xserver-xorg-video-cirrus xserver-xorg-video-cyrix
- xserver-xorg-video-dummy xserver-xorg-video-fbdev
- xserver-xorg-video-glint xserver-xorg-video-i128
- xserver-xorg-video-i740 xserver-xorg-video-imstt
- xserver-xorg-video-intel xserver-xorg-video-mach64
- xserver-xorg-video-mga xserver-xorg-video-neomagic
- xserver-xorg-video-nsc xserver-xorg-video-nv
- xserver-xorg-video-openchrome xserver-xorg-video-r128
- xserver-xorg-video-radeon xserver-xorg-video-radeonhd
- xserver-xorg-video-rendition xserver-xorg-video-s3
- xserver-xorg-video-s3virge xserver-xorg-video-savage
- xserver-xorg-video-siliconmotion xserver-xorg-video-sis
- xserver-xorg-video-sisusb xserver-xorg-video-tdfx
- xserver-xorg-video-tga xserver-xorg-video-trident
- xserver-xorg-video-tseng xserver-xorg-video-v4l
- xserver-xorg-video-vesa xserver-xorg-video-vga
- xserver-xorg-video-vmware xserver-xorg-video-voodoo xulrunner-1.9
- xulrunner-1.9-gnome-support</p>
-
-<p><b>aptitude gnome 129</b>
-
-<br>bluez-gnome bluez-utils cpp-4.3 cupsddk-drivers dhcdbd
- djvulibre-desktop finger gnome-app-install gnome-mount
- gnome-network-admin gnome-spell gnome-vfs-obexftp
- gnome-volume-manager gstreamer0.10-gnomevfs gtkhtml3.14 libao2
- libavahi-compat-libdnssd1 libavahi-core5 libavcodec51 libbluetooth2
- libcamel1.2-11 libcdio7 libcucul0 libcupsys2 libcurl3 libdatrie0
- libdirectfb-1.0-0 libdvdread3 libedataserver1.2-9 libeel2-2.20
- libeel2-data libepc-1.0-1 libepc-ui-1.0-1 libfaad0 libgail-common
- libgd2-noxpm libgda3-3 libgda3-common libgdl-1-0 libgdl-1-common
- libggz2 libggzcore9 libggzmod4 libgksu1.2-0 libgksuui1.0-1 libgmyth0
- libgnomecups1.0-1 libgnomekbd2 libgnomekbdui2 libgnomeprint2.2-0
- libgnomeprint2.2-data libgnomeprintui2.2-0 libgnomeprintui2.2-common
- libgnomevfs2-bin libgpod3 libgraphviz4 libgtkhtml2-0
- libgtksourceview-common libgtksourceview1.0-0 libgucharmap6
- libhesiod0 libicu38 libiw29 libkpathsea4 libltdl3 libmagick++10
- libmagick10 libmalaga7 libmetacity0 libmtp7 libmysqlclient15off
- libnautilus-burn4 libneon27 libnm-glib0 libnm-util0 libopal-2.2
- libosp5 libparted1.8-10 libpoppler-glib3 libpoppler3 libpt-1.10.10
- libpt-1.10.10-plugins-alsa libpt-1.10.10-plugins-v4l libraw1394-8
- libsensors3 libslab0 libsmbios2 libsoup2.2-8 libssh2-1
- libsuitesparse-3.1.0 libswfdec-0.6-90 libtalloc1 libtotem-plparser10
- libtrackerclient0 libxalan2-java libxalan2-java-gcj libxcb-xlib0
- libxerces2-java libxerces2-java-gcj libxklavier12 libxtrap6
- libxxf86misc1 libzephyr3 mysql-common nautilus-cd-burner
- openoffice.org-writer2latex openssl-blacklist p7zip
- python-4suite-xml python-eggtrayicon python-gnome2-desktop
- python-gnome2-extras python-gtkhtml2 python-gtkmozembed
- python-numeric python-sexy serpentine svgalibg1 swfdec-gnome
- swfdec-mozilla totem-gstreamer update-manager wodim
- xserver-xorg-video-cyrix xserver-xorg-video-imstt
- xserver-xorg-video-nsc xserver-xorg-video-v4l xserver-xorg-video-vga
- zip</p>
-
-<p><b>apt-get kde 82</b>
-
-<br>cupsddk-drivers karm kaudiocreator kcoloredit kcontrol kde kde-core
- kdeaddons kdeartwork kdebase kdebase-bin kdebase-bin-kde3
- kdebase-kio-plugins kdesktop kdeutils khelpcenter kicker
- kicker-applets knewsticker kolourpaint konq-plugins konqueror korn
- kpersonalizer kscreensaver ksplash libavcodec51 libdatrie0 libkiten1
- libxcb-xlib0 quanta superkaramba texlive-base-bin xorg xserver-xorg
- xserver-xorg-core xserver-xorg-input-all xserver-xorg-input-evdev
- xserver-xorg-input-kbd xserver-xorg-input-mouse
- xserver-xorg-input-synaptics xserver-xorg-input-wacom
- xserver-xorg-video-all xserver-xorg-video-apm xserver-xorg-video-ark
- xserver-xorg-video-ati xserver-xorg-video-chips
- xserver-xorg-video-cirrus xserver-xorg-video-cyrix
- xserver-xorg-video-dummy xserver-xorg-video-fbdev
- xserver-xorg-video-glint xserver-xorg-video-i128
- xserver-xorg-video-i740 xserver-xorg-video-imstt
- xserver-xorg-video-intel xserver-xorg-video-mach64
- xserver-xorg-video-mga xserver-xorg-video-neomagic
- xserver-xorg-video-nsc xserver-xorg-video-nv
- xserver-xorg-video-openchrome xserver-xorg-video-r128
- xserver-xorg-video-radeon xserver-xorg-video-radeonhd
- xserver-xorg-video-rendition xserver-xorg-video-s3
- xserver-xorg-video-s3virge xserver-xorg-video-savage
- xserver-xorg-video-siliconmotion xserver-xorg-video-sis
- xserver-xorg-video-sisusb xserver-xorg-video-tdfx
- xserver-xorg-video-tga xserver-xorg-video-trident
- xserver-xorg-video-tseng xserver-xorg-video-v4l
- xserver-xorg-video-vesa xserver-xorg-video-vga
- xserver-xorg-video-vmware xserver-xorg-video-voodoo xulrunner-1.9</p>
-
-<p><b>aptitude kde 192</b>
-<br>bluez-utils cpp-4.3 cupsddk-drivers cvs dcoprss dhcdbd
- djvulibre-desktop dosfstools eyesapplet fifteenapplet finger gettext
- ghostscript-x imlib-base imlib11 indi kandy karm kasteroids
- kaudiocreator kbackgammon kbstate kcoloredit kcontrol kcron kdat
- kdeadmin-kfile-plugins kdeartwork-misc kdeartwork-theme-window
- kdebase-bin-kde3 kdebase-kio-plugins kdeedu-data
- kdegraphics-kfile-plugins kdelirc kdemultimedia-kappfinder-data
- kdemultimedia-kfile-plugins kdenetwork-kfile-plugins
- kdepim-kfile-plugins kdepim-kio-plugins kdeprint kdesktop kdessh
- kdict kdnssd kdvi kedit keduca kenolaba kfax kfaxview kfouleggs
- kghostview khelpcenter khexedit kiconedit kitchensync klatin
- klickety kmailcvt kmenuedit kmid kmilo kmoon kmrml kodo kolourpaint
- kooka korn kpager kpdf kpercentage kpf kpilot kpoker kpovmodeler
- krec kregexpeditor ksayit ksim ksirc ksirtet ksmiletris ksmserver
- ksnake ksokoban ksplash ksvg ksysv ktip ktnef kuickshow kverbos
- kview kviewshell kvoctrain kwifimanager kwin kwin4 kworldclock
- kxsldbg libakode2 libao2 libarts1-akode libarts1-audiofile
- libarts1-mpeglib libarts1-xine libavahi-compat-libdnssd1
- libavahi-core5 libavc1394-0 libavcodec51 libbluetooth2
- libboost-python1.34.1 libcucul0 libcurl3 libcvsservice0 libdatrie0
- libdirectfb-1.0-0 libdjvulibre21 libdvdread3 libfaad0 libfreebob0
- libgail-common libgd2-noxpm libgraphviz4 libgsmme1c2a libgtkhtml2-0
- libicu38 libiec61883-0 libindex0 libiw29 libk3b3 libkcal2b libkcddb1
- libkdeedu3 libkdepim1a libkgantt0 libkiten1 libkleopatra1 libkmime2
- libkpathsea4 libkpimexchange1 libkpimidentities1 libkscan1
- libksieve0 libktnef1 liblockdev1 libltdl3 libmagick10 libmimelib1c2a
- libmozjs1d libmpcdec3 libneon27 libnm-util0 libopensync0 libpisock9
- libpoppler-glib3 libpoppler-qt2 libpoppler3 libraw1394-8 libsmbios2
- libssh2-1 libsuitesparse-3.1.0 libtalloc1 libtiff-tools
- libxalan2-java libxalan2-java-gcj libxcb-xlib0 libxerces2-java
- libxerces2-java-gcj libxtrap6 mpeglib networkstatus
- openoffice.org-writer2latex pmount poster psutils quanta quanta-data
- superkaramba svgalibg1 tex-common texlive-base texlive-base-bin
- texlive-common texlive-doc-base texlive-fonts-recommended
- xserver-xorg-video-cyrix xserver-xorg-video-imstt
- xserver-xorg-video-nsc xserver-xorg-video-v4l xserver-xorg-video-vga
- xulrunner-1.9</p>
-
+<p>A few days ago, I was introduces to some students in the robot
+student assosiation <a href="http://www.robotica.no/">Robotica
+Osloensis</a> at the University of Oslo where I work, who planned to
+get their own 3D printer. They wanted to learn from me based on my
+work in the area. After having a short lunch meeting with them, I
+offered them to borrow my reprap kit, as I never had time to complete
+the build and this seem unlike to change any time soon. I look
+forward to see how this goes. This monday their volunteer driver
+picked up my kit and drove it to their lab, and tomorrow I am told the
+last exam is over so they can start work on getting the 3D printer
+operational.</p>
+
+<p>The robotic group have already build several robots on their own,
+and seem capable of getting the reprap operational. I really look
+forward to being able to print all the cool 3D designs published on
+<a href="http://www.thingiverse.com/">Thingiverse</a>. I even got
+some 3D scans I got made during Dagen@IFI when one of the groups at
+the computer science department at the university demonstrated their
+very cool 3D scanner.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/__pne_tr__dl__snett_er_et_samfunnsgode.html">Åpne trådløsnett er et samfunnsgode</a></div>
- <div class="date">2010-06-12 12:45</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_development_gathering_and_General_Assembly_for_FRiSK.html">Debian Edu development gathering and General Assembly for FRiSK</a></div>
+ <div class="date">2010-11-29 18:40</div>
<div class="body">
-<p>Veldig glad for å oppdage via
-<a href="http://yro.slashdot.org/story/10/06/11/1841256/Finland-To-Legalize-Use-of-Unsecured-Wi-Fi">Slashdot</a>
-at folk i Finland har forstått at åpne trådløsnett er et samfunnsgode.
-Jeg ser på åpne trådløsnett som et fellesgode på linje med retten til
-ferdsel i utmark og retten til å bevege seg i strandsonen. Jeg har
-glede av åpne trådløsnett når jeg finner dem, og deler gladelig nett
-med andre så lenge de ikke forstyrrer min bruk av eget nett.
-Nettkapasiteten er sjelden en begrensning ved normal browsing og enkel
-SSH-innlogging (som er min vanligste nettbruk), og nett kan brukes til
-så mye positivt og nyttig (som nyhetslesing, sjekke været, kontakte
-slekt og venner, holde seg oppdatert om politiske saker, kontakte
-organisasjoner og politikere, etc), at det for meg er helt urimelig å
-blokkere dette for alle som ikke gjør en flue fortred. De som mener
-at potensialet for misbruk er grunn nok til å hindre all den positive
-og lovlydige bruken av et åpent trådløsnett har jeg dermed ingen
-forståelse for. En kan ikke eksistensen av forbrytere styre hvordan
-samfunnet skal organiseres. Da får en et kontrollsamfunn de færreste
-ønsker å leve i, og det at vi har et samfunn i Norge der tilliten til
-hverandre er høy gjør at samfunnet fungerer ganske godt. Det bør vi
-anstrenge oss for å beholde.</p>
+<p>On friday, the first Debian Edu / Skolelinux
+<a href="http://www.friprogramvareiskolen.no/Gathering/2010-12-03-05-Oslo">development
+gathering</a> in a long time take place here in Oslo, Norway. I
+really look forward to seeing all the good people working on the
+Squeeze release. The gathering is open for everyone interested in
+learning more about Debian Edu / Skolelinux.</p>
+
+<p>On Saturday, the Norwegian member organization taking care of
+organizing these development gatherings, Fri Programvare i Skolen,
+will hold its
+<a href="http://friprogramvareiskolen.no/Genfors/2010">General Assembly
+for 2010</a>. Membership is open for all, and currently there are 388
+people registered as members. Last year 32 members cast their vote in
+the memberdb based election system. I hope more people find time to
+vote this year.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html">Automatic upgrade testing from Lenny to Squeeze</a></div>
- <div class="date">2010-06-11 22:50</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Why_isn_t_Debian_Edu_using_VLC_.html">Why isn't Debian Edu using VLC?</a></div>
+ <div class="date">2010-11-27 11:30</div>
<div class="body">
-<p>The last few days I have done some upgrade testing in Debian, to
-see if the upgrade from Lenny to Squeeze will go smoothly. A few bugs
-have been discovered and reported in the process
-(<a href="http://bugs.debian.org/585410">#585410</a> in nagios3-cgi,
-<a href="http://bugs.debian.org/584879">#584879</a> already fixed in
-enscript and <a href="http://bugs.debian.org/584861">#584861</a> in
-kdebase-workspace-data), and to get a more regular testing going on, I
-am working on a script to automate the test.</p>
-
-<p>The idea is to create a Lenny chroot and use tasksel to install a
-Gnome or KDE desktop installation inside the chroot before upgrading
-it. To ensure no services are started in the chroot, a policy-rc.d
-script is inserted. To make sure tasksel believe it is to install a
-desktop on a laptop, the tasksel tests are replaced in the chroot
-(only acceptable because this is a throw-away chroot).</p>
-
-<p>A naive upgrade from Lenny to Squeeze using aptitude dist-upgrade
-currently always fail because udev refuses to upgrade with the kernel
-in Lenny, so to avoid that problem the file /etc/udev/kernel-upgrade
-is created. The bug report
-<a href="http://bugs.debian.org/566000">#566000</a> make me suspect
-this problem do not trigger in a chroot, but I touch the file anyway
-to make sure the upgrade go well. Testing on virtual and real
-hardware have failed me because of udev so far, and creating this file
-do the trick in such settings anyway. This is a
-<a href="http://www.linuxquestions.org/questions/debian-26/failed-dist-upgrade-due-to-udev-config_sysfs_deprecated-nonsense-804130/">known
-issue</a> and the current udev behaviour is intended by the udev
-maintainer because he lack the resources to rewrite udev to keep
-working with old kernels or something like that. I really wish the
-udev upstream would keep udev backwards compatible, to avoid such
-upgrade problem, but given that they fail to do so, I guess
-documenting the way out of this mess is the best option we got for
-Debian Squeeze.</p>
-
-<p>Anyway, back to the task at hand, testing upgrades. This test
-script, which I call <tt>upgrade-test</tt> for now, is doing the
-trick:</p>
-
-<blockquote><pre>
-#!/bin/sh
-set -ex
-
-if [ "$1" ] ; then
- desktop=$1
-else
- desktop=gnome
-fi
-
-from=lenny
-to=squeeze
-
-exec < /dev/null
-unset LANG
-mirror=http://ftp.skolelinux.org/debian
-tmpdir=chroot-$from-upgrade-$to-$desktop
-fuser -mv .
-debootstrap $from $tmpdir $mirror
-chroot $tmpdir aptitude update
-cat > $tmpdir/usr/sbin/policy-rc.d <<EOF
-#!/bin/sh
-exit 101
-EOF
-chmod a+rx $tmpdir/usr/sbin/policy-rc.d
-exit_cleanup() {
- umount $tmpdir/proc
-}
-mount -t proc proc $tmpdir/proc
-# Make sure proc is unmounted also on failure
-trap exit_cleanup EXIT INT
-
-chroot $tmpdir aptitude -y install debconf-utils
-
-# Make sure tasksel autoselection trigger. It need the test scripts
-# to return the correct answers.
-echo tasksel tasksel/desktop multiselect $desktop | \
- chroot $tmpdir debconf-set-selections
-
-# Include the desktop and laptop task
-for test in desktop laptop ; do
- echo > $tmpdir/usr/lib/tasksel/tests/$test <<EOF
-#!/bin/sh
-exit 2
-EOF
- chmod a+rx $tmpdir/usr/lib/tasksel/tests/$test
-done
-
-DEBIAN_FRONTEND=noninteractive
-DEBIAN_PRIORITY=critical
-export DEBIAN_FRONTEND DEBIAN_PRIORITY
-chroot $tmpdir tasksel --new-install
-
-echo deb $mirror $to main > $tmpdir/etc/apt/sources.list
-chroot $tmpdir aptitude update
-touch $tmpdir/etc/udev/kernel-upgrade
-chroot $tmpdir aptitude -y dist-upgrade
-fuser -mv
-</pre></blockquote>
-
-<p>I suspect it would be useful to test upgrades with both apt-get and
-with aptitude, but I have not had time to look at how they behave
-differently so far. I hope to get a cron job running to do the test
-regularly and post the result on the web. The Gnome upgrade currently
-work, while the KDE upgrade fail because of the bug in
-kdebase-workspace-data</p>
-
-<p>I am not quite sure what kind of extract from the huge upgrade logs
-(KDE 167 KiB, Gnome 516 KiB) it make sense to include in this blog
-post, so I will refrain from trying. I can report that for Gnome,
-aptitude report 760 packages upgraded, 448 newly installed, 129 to
-remove and 1 not upgraded and 1024MB need to be downloaded while for
-KDE the same numbers are 702 packages upgraded, 507 newly installed,
-193 to remove and 0 not upgraded and 1117MB need to be downloaded</p>
-
-<p>I am very happy to notice that the Gnome desktop + laptop upgrade
-is able to migrate to dependency based boot sequencing and parallel
-booting without a hitch. Was unsure if there were still bugs with
-packages failing to clean up their obsolete init.d script during
-upgrades, and no such problem seem to affect the Gnome desktop+laptop
-packages.</p>
+<p>In the latest issue of Linux Journal, the readers choices were
+presented, and the winner among the multimedia player were VLC.
+Personally, I like VLC, and it is my player of choice when I first try
+to play a video file or stream. Only if VLC fail will I drag out
+gmplayer to see if it can do better. The reason is mostly the failure
+model and trust. When VLC fail, it normally pop up a error message
+reporting the problem. When mplayer fail, it normally segfault or
+just hangs. The latter failure mode drain my trust in the program.<p>
+
+<p>But even if VLC is my player of choice, we have choosen to use
+mplayer in <a href="http://www.skolelinux.org/">Debian
+Edu/Skolelinux</a>. The reason is simple. We need a good browser
+plugin to play web videos seamlessly, and the VLC browser plugin is
+not very good. For example, it lack in-line control buttons, so there
+is no way for the user to pause the video. Also, when I
+<a href="http://wiki.debian.org/DebianEdu/BrowserMultimedia">last
+tested the browser plugins</a> available in Debian, the VLC plugin
+failed on several video pages where mplayer based plugins worked. If
+the browser plugin for VLC was as good as the gecko-mediaplayer
+package (which uses mplayer), we would switch.</P>
+
+<p>While VLC is a good player, its user interface is slightly
+annoying. The most annoying feature is its inconsistent use of
+keyboard shortcuts. When the player is in full screen mode, its
+shortcuts are different from when it is playing the video in a window.
+For example, space only work as pause when in full screen mode. I
+wish it had consisten shortcuts and that space also would work when in
+window mode. Another nice shortcut in gmplayer is [enter] to restart
+the current video. It is very nice when playing short videos from the
+web and want to restart it when new people arrive to have a look at
+what is going on.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Skolelinux_er_laget_for_sentraldrifting__naturligvis.html">Skolelinux er laget for sentraldrifting, naturligvis</a></div>
- <div class="date">2010-06-09 12:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/DND_hedrer_overv__kning_av_barn_med_Rosingsprisen.html">DND hedrer overvåkning av barn med Rosingsprisen</a></div>
+ <div class="date">2010-11-23 14:15</div>
<div class="body">
-<p>Det er merkelig hvordan myter om Skolelinux overlever. En slik
-myte er at Skolelinux ikke kan sentraldriftes og ha sentralt plasserte
-tjenermaskiner. I siste Computerworld Norge er
-<a href="http://www.idg.no/computerworld/article169432.ece">IT-sjef
-Viggo Billdal i Steinkjer intervjuet</a>, og forteller uten
-blygsel:</p>
-
-<blockquote><p>Vi hadde Skolelinux, men det har vi sluttet med. Vi testet
-om det lønte seg med Microsoft eller en åpen plattform. Vi fant ut at
-Microsoft egentlig var totalt sett bedre egnet. Det var store
-driftskostnader med Skolelinux, blant annet på grunn av
-desentraliserte servere. Det var komplisert, så vi gikk vekk fra det
-og bruker nå bare Windows.</p></blockquote>
-
-<p>En <a
-href="https://init.linpro.no/pipermail/skolelinux.no/bruker/2010-June/009101.html">rask
-sjekk</a> mot den norske brukerlista i Skolelinuxprosjektet forteller
-at Steinkjers forsøk foregikk fram til 2004/2005, og at Røysing skole
-i Steinkjer skal ha vært svært fornøyd med Skolelinux men at kommunen
-overkjørte skolen og krevde at de gikk over til Windows. Et søk på
-nettet sendte meg til
-<a href="http://www.dn.no/multimedia/archive/00090/Dagens_it_nr__18_90826a.pdf">Dagens
-IT nr. 18 2005</a> hvor en kan lese på side 18:</p>
-
-<blockquote><p>Inge Tømmerås ved Røysing skole i Steinkjer kjører ennå
-Microsoft, men forteller at kompetanseutfordringen med Skolelinux ikke
-var så stor. Jeg syntes Skolelinux var utrolig lett å drifte uten
-forkunnskaper. Men man må jo selvsagt ha tilgang på ekstern kompetanse
-til installasjoner og maskinvarefeil, sier Tømmerås.</p></blockquote>
-
-<p>Som systemarkitekten bak Skolelinux, kan jeg bare riste på hodet
-over påstanden om at Skolelinux krever desentraliserte tjenere.
-Skolelinux-arkitekturen er laget for sentralisert drift og plassering
-av tjenerne lokalt eller sentralt alt etter behov og nettkapasitet.
-Den er modellert på nettverks- og tjenerløsningen som brukes på
-Universitetet i Tromsø og Oslo, der jeg jobber med utvikling av
-driftstjenester. Dette er det heldigvis noen som har fått med seg, og
-jeg er glad for å kunne sitere fra en kommentar på den overnevnte
-artikkelen. Min venn og gamle kollega Sturle Sunde forteller der:
-
-<blockquote>
-<p>I Flora kommune køyrer vi Skulelinux på skular med alt frå 15 til
-meir enn 500 elevar. Dei store skulane har eigen tenar, for det er
-mest praktisk. Eg, som er driftsansvarleg for heile nettet, ser
-sjeldan dei tenarane fysisk, men at dei står der gjer skulane mindre
-avhengige av eksterne linjer som er trege eller dyre. Dei minste
-skulane har ikkje eigen tenar. Å bruke sentral tenar er heller ikkje
-noko problem. Småskulane klarar seg fint med 1 mbit-linje til ein
-sentral tenar eller tenaren på ein større skule.</p>
-
-<p>Det beste med Skulelinux er halvtjukke klientar. Dei treng ikkje
-harddisk og brukar minimalt med ressursar på tenaren fordi dei køyrer
-programma lokalt. Eit klasserom med 30 sju-åtte år gamle maskiner har
-mykje meir CPU og RAM totalt enn nokon moderne tenar til under
-millionen. Det trengst to kommandoar på den sentrale tenaren for å
-oppdatere alle klientane, både tynne og halvtjukke. Vi har ingen
-problem med diskar som ryk heller, som var eit problem før fordi
-elevane sat og sparka i maskinene. Og dei krev lite bandbreidde i
-nettet, so det er fullt mogleg å køyre slike på småskular med trege
-linjer mot tenaren på ein større skule.</p>
-
-<p>Flora kommune har nesten 800 Linux-maskiner i sitt skulenett, og
-ein person som tek seg av drift av heile nettet, inkludert tenarar,
-klientar, operativsystem, programvare, heimekontorløysing og
-administrasjon av brukarar.</p>
-
-<p>No skal det seiast at vi ikkje køyrer rein Skulelinux ut av
-boksen. Vi har gjort ein del tilpassingar mot noko Novell-greier som
-var der frå før, og som har komplisert installasjonen vår. Etter at
-oppsettet var gjort har løysinga vore stabil og kravd minimalt med
-arbeid.</p>
-</blockquote>
-
-<p>Jeg vet at Narvik, Harstad og Oslo er kommuner der Skolelinux
-sentraldriftes med sentrale tjenere. Det forteller meg at Steinkjers
-IT-sjef neppe bør skylde på Skolelinux-løsningen for sine 5 år gamle
-minner.</p>
+<p>Jeg registrerer med vond smak i munnen at Den Norske Dataforening
+<a
+href="http://www.dataforeningen.no/hedret-med-rosingprisen.4849070-133913.html">hedrer
+overvåkning av barn med Rosingsprisen for kreativitet i år</a>. Jeg
+er glad jeg nå er meldt ut av DND.</p>
+
+<p>Å elektronisk overvåke sine barn er ikke å gjøre dem en tjeneste,
+men et overgrep mot individer i utvikling som bør læres opp til å ta
+egne valg.</p>
+
+<p>For å sitere Datatilsynets nye leder, Bjørn Erik Thon, i
+<a href="http://www.idg.no/computerworld/article174262.ece">et intervju
+med Computerworld Norge</A>:</p>
+
+<p><blockquote>
+- For alle som har barn, meg selv inkludert, er førstetanken at det
+hadde vært fint å vite hvor barnet sitt er til enhver tid. Men ungene
+har ikke godt av det. De er små individer som skal søke rundt og finne
+sine små gjemmesteder og utvide horisonten, uten at foreldrene ser dem
+i kortene. Det kan være fristende, men jeg ville ikke gått inn i
+dette.
+</blockquote></p>
+
+<p>Det er skremmende å se at DND mener en tjeneste som legger opp til
+slike overgrep bør hedres. Å flytte oppveksten for barn inn i en
+virtuell
+<a href="http://en.wikipedia.org/wiki/Panopticon">Panopticon</a> er et
+grovt overgrep og vil gjøre skade på barnenes utvikling, og foreldre
+burde tenke seg godt om før de gir etter for sine instinkter her.</p>
+
+<p>Blipper-tjenesten får meg til å tenke på bøkene til
+<a href="http://en.wikipedia.org/wiki/John_Twelve_Hawks">John Twelve
+Hawks</a>, som forbilledlig beskriver hvordan et totalitært
+overvåkningssamfunn bygges sakte men sikkert rundt oss, satt sammen av
+gode intensjoner og manglende bevissthet om hvilke prinsipper et
+liberalt demokrati er fundamentert på. Jeg har hatt stor glede av å
+lese alle de tre bøkene.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Upstart_or_sysvinit___as_init_d_scripts_see_it.html">Upstart or sysvinit - as init.d scripts see it</a></div>
- <div class="date">2010-06-06 23:55</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Lenny__Squeeze_upgrades_of_the_Gnome_and_KDE_desktop__now_with_apt_get_autoremove.html">Lenny->Squeeze upgrades of the Gnome and KDE desktop, now with apt-get autoremove</a></div>
+ <div class="date">2010-11-22 14:15</div>
<div class="body">
-<p>If Debian is to migrate to upstart on Linux, I expect some init.d
-scripts to migrate (some of) their operations to upstart job while
-keeping the init.d for hurd and kfreebsd. The packages with such
-needs will need a way to get their init.d scripts to behave
-differently when used with sysvinit and with upstart. Because of
-this, I had a look at the environment variables set when a init.d
-script is running under upstart, and when it is not.</p>
-
-<p>With upstart, I notice these environment variables are set when a
-script is started from rcS.d/ (ignoring some irrelevant ones like
-COLUMNS):</p>
-
-<blockquote><pre>
-DEFAULT_RUNLEVEL=2
-previous=N
-PREVLEVEL=
-RUNLEVEL=
-runlevel=S
-UPSTART_EVENTS=startup
-UPSTART_INSTANCE=
-UPSTART_JOB=rc-sysinit
-</pre></blockquote>
-
-<p>With sysvinit, these environment variables are set for the same
-script.</p>
-
-<blockquote><pre>
-INIT_VERSION=sysvinit-2.88
-previous=N
-PREVLEVEL=N
-RUNLEVEL=S
-runlevel=S
-</pre></blockquote>
-
-<p>The RUNLEVEL and PREVLEVEL environment variables passed on from
-sysvinit are not set by upstart. Not sure if it is intentional or not
-to not be compatible with sysvinit in this regard.</p>
-
-<p>For scripts needing to behave differently when upstart is used,
-looking for the UPSTART_JOB environment variable seem to be a good
-choice.</p>
+<p>Michael Biebl suggested to me on IRC, that I changed my automated
+upgrade testing of the
+<a href="http://people.skolelinux.org/~pere/debian-upgrade-testing/">Lenny
+Gnome and KDE Desktop</a> to do <tt>apt-get autoremove</tt> when using apt-get.
+This seem like a very good idea, so I adjusted by test scripts and
+can now present the updated result from today:</p>
+
+<p>This is for Gnome:</p>
+
+<p>Installed using apt-get, missing with aptitude</p>
+
+<blockquote><p>
+ apache2.2-bin
+ aptdaemon
+ baobab
+ binfmt-support
+ browser-plugin-gnash
+ cheese-common
+ cli-common
+ cups-pk-helper
+ dmz-cursor-theme
+ empathy
+ empathy-common
+ freedesktop-sound-theme
+ freeglut3
+ gconf-defaults-service
+ gdm-themes
+ gedit-plugins
+ geoclue
+ geoclue-hostip
+ geoclue-localnet
+ geoclue-manual
+ geoclue-yahoo
+ gnash
+ gnash-common
+ gnome
+ gnome-backgrounds
+ gnome-cards-data
+ gnome-codec-install
+ gnome-core
+ gnome-desktop-environment
+ gnome-disk-utility
+ gnome-screenshot
+ gnome-search-tool
+ gnome-session-canberra
+ gnome-system-log
+ gnome-themes-extras
+ gnome-themes-more
+ gnome-user-share
+ gstreamer0.10-fluendo-mp3
+ gstreamer0.10-tools
+ gtk2-engines
+ gtk2-engines-pixbuf
+ gtk2-engines-smooth
+ hamster-applet
+ libapache2-mod-dnssd
+ libapr1
+ libaprutil1
+ libaprutil1-dbd-sqlite3
+ libaprutil1-ldap
+ libart2.0-cil
+ libboost-date-time1.42.0
+ libboost-python1.42.0
+ libboost-thread1.42.0
+ libchamplain-0.4-0
+ libchamplain-gtk-0.4-0
+ libcheese-gtk18
+ libclutter-gtk-0.10-0
+ libcryptui0
+ libdiscid0
+ libelf1
+ libepc-1.0-2
+ libepc-common
+ libepc-ui-1.0-2
+ libfreerdp-plugins-standard
+ libfreerdp0
+ libgconf2.0-cil
+ libgdata-common
+ libgdata7
+ libgdu-gtk0
+ libgee2
+ libgeoclue0
+ libgexiv2-0
+ libgif4
+ libglade2.0-cil
+ libglib2.0-cil
+ libgmime2.4-cil
+ libgnome-vfs2.0-cil
+ libgnome2.24-cil
+ libgnomepanel2.24-cil
+ libgpod-common
+ libgpod4
+ libgtk2.0-cil
+ libgtkglext1
+ libgtksourceview2.0-common
+ libmono-addins-gui0.2-cil
+ libmono-addins0.2-cil
+ libmono-cairo2.0-cil
+ libmono-corlib2.0-cil
+ libmono-i18n-west2.0-cil
+ libmono-posix2.0-cil
+ libmono-security2.0-cil
+ libmono-sharpzip2.84-cil
+ libmono-system2.0-cil
+ libmtp8
+ libmusicbrainz3-6
+ libndesk-dbus-glib1.0-cil
+ libndesk-dbus1.0-cil
+ libopal3.6.8
+ libpolkit-gtk-1-0
+ libpt2.6.7
+ libpython2.6
+ librpm1
+ librpmio1
+ libsdl1.2debian
+ libsrtp0
+ libssh-4
+ libtelepathy-farsight0
+ libtelepathy-glib0
+ libtidy-0.99-0
+ media-player-info
+ mesa-utils
+ mono-2.0-gac
+ mono-gac
+ mono-runtime
+ nautilus-sendto
+ nautilus-sendto-empathy
+ p7zip-full
+ pkg-config
+ python-aptdaemon
+ python-aptdaemon-gtk
+ python-axiom
+ python-beautifulsoup
+ python-bugbuddy
+ python-clientform
+ python-coherence
+ python-configobj
+ python-crypto
+ python-cupshelpers
+ python-elementtree
+ python-epsilon
+ python-evolution
+ python-feedparser
+ python-gdata
+ python-gdbm
+ python-gst0.10
+ python-gtkglext1
+ python-gtksourceview2
+ python-httplib2
+ python-louie
+ python-mako
+ python-markupsafe
+ python-mechanize
+ python-nevow
+ python-notify
+ python-opengl
+ python-openssl
+ python-pam
+ python-pkg-resources
+ python-pyasn1
+ python-pysqlite2
+ python-rdflib
+ python-serial
+ python-tagpy
+ python-twisted-bin
+ python-twisted-conch
+ python-twisted-core
+ python-twisted-web
+ python-utidylib
+ python-webkit
+ python-xdg
+ python-zope.interface
+ remmina
+ remmina-plugin-data
+ remmina-plugin-rdp
+ remmina-plugin-vnc
+ rhythmbox-plugin-cdrecorder
+ rhythmbox-plugins
+ rpm-common
+ rpm2cpio
+ seahorse-plugins
+ shotwell
+ software-center
+ system-config-printer-udev
+ telepathy-gabble
+ telepathy-mission-control-5
+ telepathy-salut
+ tomboy
+ totem
+ totem-coherence
+ totem-mozilla
+ totem-plugins
+ transmission-common
+ xdg-user-dirs
+ xdg-user-dirs-gtk
+ xserver-xephyr
+</p></blockquote>
+
+<p>Installed using apt-get, removed with aptitude</p>
+
+<blockquote><p>
+ cheese
+ ekiga
+ eog
+ epiphany-extensions
+ evolution-exchange
+ fast-user-switch-applet
+ file-roller
+ gcalctool
+ gconf-editor
+ gdm
+ gedit
+ gedit-common
+ gnome-games
+ gnome-games-data
+ gnome-nettool
+ gnome-system-tools
+ gnome-themes
+ gnuchess
+ gucharmap
+ guile-1.8-libs
+ libavahi-ui0
+ libdmx1
+ libgalago3
+ libgtk-vnc-1.0-0
+ libgtksourceview2.0-0
+ liblircclient0
+ libsdl1.2debian-alsa
+ libspeexdsp1
+ libsvga1
+ rhythmbox
+ seahorse
+ sound-juicer
+ system-config-printer
+ totem-common
+ transmission-gtk
+ vinagre
+ vino
+</p></blockquote>
+
+<p>Installed using aptitude, missing with apt-get</p>
+
+<blockquote><p>
+ gstreamer0.10-gnomevfs
+</p></blockquote>
+
+<p>Installed using aptitude, removed with apt-get</p>
+
+<blockquote><p>
+[nothing]
+</p></blockquote>
+
+<p>This is for KDE:</p>
+
+<p>Installed using apt-get, missing with aptitude</p>
+
+<blockquote><p>
+ ksmserver
+</p></blockquote>
+
+<p>Installed using apt-get, removed with aptitude</p>
+
+<blockquote><p>
+ kwin
+ network-manager-kde
+</p></blockquote>
+
+<p>Installed using aptitude, missing with apt-get</p>
+
+<blockquote><p>
+ arts
+ dolphin
+ freespacenotifier
+ google-gadgets-gst
+ google-gadgets-xul
+ kappfinder
+ kcalc
+ kcharselect
+ kde-core
+ kde-plasma-desktop
+ kde-standard
+ kde-window-manager
+ kdeartwork
+ kdeartwork-emoticons
+ kdeartwork-style
+ kdeartwork-theme-icon
+ kdebase
+ kdebase-apps
+ kdebase-workspace
+ kdebase-workspace-bin
+ kdebase-workspace-data
+ kdeeject
+ kdelibs
+ kdeplasma-addons
+ kdeutils
+ kdewallpapers
+ kdf
+ kfloppy
+ kgpg
+ khelpcenter4
+ kinfocenter
+ konq-plugins-l10n
+ konqueror-nsplugins
+ kscreensaver
+ kscreensaver-xsavers
+ ktimer
+ kwrite
+ libgle3
+ libkde4-ruby1.8
+ libkonq5
+ libkonq5-templates
+ libnetpbm10
+ libplasma-ruby
+ libplasma-ruby1.8
+ libqt4-ruby1.8
+ marble-data
+ marble-plugins
+ netpbm
+ nuvola-icon-theme
+ plasma-dataengines-workspace
+ plasma-desktop
+ plasma-desktopthemes-artwork
+ plasma-runners-addons
+ plasma-scriptengine-googlegadgets
+ plasma-scriptengine-python
+ plasma-scriptengine-qedje
+ plasma-scriptengine-ruby
+ plasma-scriptengine-webkit
+ plasma-scriptengines
+ plasma-wallpapers-addons
+ plasma-widget-folderview
+ plasma-widget-networkmanagement
+ ruby
+ sweeper
+ update-notifier-kde
+ xscreensaver-data-extra
+ xscreensaver-gl
+ xscreensaver-gl-extra
+ xscreensaver-screensaver-bsod
+</p></blockquote>
+
+<p>Installed using aptitude, removed with apt-get</p>
+
+<blockquote><p>
+ ark
+ google-gadgets-common
+ google-gadgets-qt
+ htdig
+ kate
+ kdebase-bin
+ kdebase-data
+ kdepasswd
+ kfind
+ klipper
+ konq-plugins
+ konqueror
+ ksysguard
+ ksysguardd
+ libarchive1
+ libcln6
+ libeet1
+ libeina-svn-06
+ libggadget-1.0-0b
+ libggadget-qt-1.0-0b
+ libgps19
+ libkdecorations4
+ libkephal4
+ libkonq4
+ libkonqsidebarplugin4a
+ libkscreensaver5
+ libksgrd4
+ libksignalplotter4
+ libkunitconversion4
+ libkwineffects1a
+ libmarblewidget4
+ libntrack-qt4-1
+ libntrack0
+ libplasma-geolocation-interface4
+ libplasmaclock4a
+ libplasmagenericshell4
+ libprocesscore4a
+ libprocessui4a
+ libqalculate5
+ libqedje0a
+ libqtruby4shared2
+ libqzion0a
+ libruby1.8
+ libscim8c2a
+ libsmokekdecore4-3
+ libsmokekdeui4-3
+ libsmokekfile3
+ libsmokekhtml3
+ libsmokekio3
+ libsmokeknewstuff2-3
+ libsmokeknewstuff3-3
+ libsmokekparts3
+ libsmokektexteditor3
+ libsmokekutils3
+ libsmokenepomuk3
+ libsmokephonon3
+ libsmokeplasma3
+ libsmokeqtcore4-3
+ libsmokeqtdbus4-3
+ libsmokeqtgui4-3
+ libsmokeqtnetwork4-3
+ libsmokeqtopengl4-3
+ libsmokeqtscript4-3
+ libsmokeqtsql4-3
+ libsmokeqtsvg4-3
+ libsmokeqttest4-3
+ libsmokeqtuitools4-3
+ libsmokeqtwebkit4-3
+ libsmokeqtxml4-3
+ libsmokesolid3
+ libsmokesoprano3
+ libtaskmanager4a
+ libtidy-0.99-0
+ libweather-ion4a
+ libxklavier16
+ libxxf86misc1
+ okteta
+ oxygencursors
+ plasma-dataengines-addons
+ plasma-scriptengine-superkaramba
+ plasma-widget-lancelot
+ plasma-widgets-addons
+ plasma-widgets-workspace
+ polkit-kde-1
+ ruby1.8
+ systemsettings
+ update-notifier-common
+</p></blockquote>
+
+<p>Running apt-get autoremove made the results using apt-get and
+aptitude a bit more similar, but there are still quite a lott of
+differences. I have no idea what packages should be installed after
+the upgrade, but hope those that do can have a look.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
bootsystem">bootsystem</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_manual_for_standards_wars___.html">A manual for standards wars...</a></div>
- <div class="date">2010-06-06 14:15</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Migrating_Xen_virtual_machines_using_LVM_to_KVM_using_disk_images.html">Migrating Xen virtual machines using LVM to KVM using disk images</a></div>
+ <div class="date">2010-11-22 11:20</div>
<div class="body">
-<p>Via the
-<a href="http://feedproxy.google.com/~r/robweir/antic-atom/~3/QzU4RgoAGMg/weekly-links-10.html">blog
-of Rob Weir</a> I came across the very interesting essay named
-<a href="http://faculty.haas.berkeley.edu/shapiro/wars.pdf">The Art of
-Standards Wars</a> (PDF 25 pages). I recommend it for everyone
-following the standards wars of today.</p>
+<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 <hostname>"
+ 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>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
</div>
<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
-<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (13)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (5)</a></li>
</ul></li>
<h2>Tags</h2>
<ul>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (1)</a></li>
+
<li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (10)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (28)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (45)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (27)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (53)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (40)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (76)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (7)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (5)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (11)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (93)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (69)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (114)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (78)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (18)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (13)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (29)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (13)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (9)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (21)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (13)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (6)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (14)</a></li>
</ul>
</div>
<p style="text-align: right">
-Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v3.7</a>
+Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v3.2</a>
</p>
</body>
</html>
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