1 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Strict//EN"
2 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
5 <title>Petter Reinholdtsen
</title>
6 <link rel=
"stylesheet" type=
"text/css" media=
"screen" href=
"http://people.skolelinux.org/pere/blog/style.css">
7 <link rel=
"alternate" title=
"RSS Feed" href=
"http://people.skolelinux.org/pere/blog/index.rss" type=
"application/rss+xml">
14 <a href=
"http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen
</a>
23 <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>
24 <div class=
"date">2010-
12-
22 14:
55</div>
26 <p>The last few days I have spent at work here at the
<a
27 href=
"http://www.uio.no/">University of oslo
</a> testing if the new
28 batch of computers will work with Linux. Every year for the last few
29 years the university have organized shared bid of a few thousand
30 computers, and this year HP won the bid. Two different desktops and
31 five different laptops are on the list this year. We in the UNIX
32 group want to know which one of these computers work well with RHEL
33 and Ubuntu, the two Linux distributions we currently handle at the
36 <p>My test method is simple, and I share it here to get feedback and
37 perhaps inspire others to test hardware as well. To test, I PXE
38 install the OS version of choice, and log in as my normal user and run
39 a few applications and plug in selected pieces of hardware. When
40 something fail, I make a note about this in the test matrix and move
41 on. If I have some spare time I try to report the bug to the OS
42 vendor, but as I only have the machines for a short time, I rarely
43 have the time to do this for all the problems I find.
</p>
45 <p>Anyway, to get to the point of this post. Here is the simple tests
46 I perform on a new model.
</p>
50 <li>Is PXE installation working? I'm testing with RHEL6, Ubuntu Lucid
51 and Ubuntu Maverik at the moment. If I feel like it, I also test with
52 RHEL5 and Debian Edu/Squeeze.
</li>
54 <li>Is X.org working? If the graphical login screen show up after
55 installation, X.org is working.
</li>
57 <li>Is hardware accelerated OpenGL working? Running glxgears (in
58 package mesa-utils on Ubuntu) and writing down the frames per second
59 reported by the program.
</li>
61 <li>Is sound working? With Gnome and KDE, a sound is played when
62 logging in, and if I can hear this the test is successful. If there
63 are several audio exits on the machine, I try them all and check if
64 the Gnome/KDE audio mixer can control where to send the sound. I
65 normally test this by playing
66 <a href=
"http://www.nuug.no/aktiviteter/20101012-chef/ ">a HTML5
67 video
</a> in Firefox/Iceweasel.
</li>
69 <li>Is the USB subsystem working? I test this by plugging in a USB
70 memory stick and see if Gnome/KDE notices this.
</li>
72 <li>Is the CD/DVD player working? I test this by inserting any CD/DVD
73 I have lying around, and see if Gnome/KDE notices this.
</li>
75 <li>Is any built in camera working? Test using cheese, and see if a
76 picture from the v4l device show up.
</li>
78 <li>Is bluetooth working? Use the Gnome/KDE browsing tool to see if
79 any bluetooth devices are discovered. In my office, I normally see a
82 <li>For laptops, is the SD or Compaq Flash reader working. I have
83 memory modules lying around, and stick them in and see if Gnome/KDE
86 <li>For laptops, is suspecd/hibernate working? I'm testing if the
87 special button work, and if the laptop continue to work after
90 <li>For laptops, is the extra buttons working, like audio level,
91 adjusting background light, switching on/off external video output,
92 switching on/off wifi, bluetooth, etc? The set of buttons differ from
93 laptop to laptop, so I just write down which are working and which are
96 <li>Some laptops have smart card readers, finger print readers,
97 acceleration sensors etc. I rarely test these, as I do not know how
98 to quickly test if they are working or not, so I only document their
103 <p>By now I suspect you are really curious what the test results are
104 for the HP machines I am testing. I'm not done yet, so I will report
105 the test results later. For now I can report that HP
8100 Elite work
106 fine, and hibernation fail with HP EliteBook
8440p on Ubuntu Lucid,
107 and audio fail on RHEL6. Ubuntu Maverik worked with
8440p. As you
108 can see, I have most machines left to test. One interesting
109 observation is that Ubuntu Lucid has almost twice the framerate than
110 RHEL6 with glxgears. No idea why.
</p>
116 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>.
120 <div class=
"padding"></div>
123 <div class=
"title"><a href=
"http://people.skolelinux.org/pere/blog/Some_thoughts_on_BitCoins.html">Some thoughts on BitCoins
</a></div>
124 <div class=
"date">2010-
12-
11 15:
10</div>
126 <p>As I continue to explore
127 <a href=
"http://www.bitcoin.org/">BitCoin
</a>, I've starting to wonder
128 what properties the system have, and how it will be affected by laws
129 and regulations here in Norway. Here are some random notes.
</p>
131 <p>One interesting thing to note is that since the transactions are
132 verified using a peer to peer network, all details about a transaction
133 is known to everyone. This means that if a BitCoin address has been
134 published like I did with mine in my initial post about BitCoin, it is
135 possible for everyone to see how many BitCoins have been transfered to
136 that address. There is even a web service to look at the details for
137 all transactions. There I can see that my address
138 <a href=
"http://blockexplorer.com/address/15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b
</a>
139 have received
16.06 Bitcoin, the
140 <a href=
"http://blockexplorer.com/address/1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3">1LfdGnGuWkpSJgbQySxxCWhv
8MHqvwst
3</a>
141 address of Simon Phipps have received
181.97 BitCoin and the address
142 <a href=
"http://blockexplorer.com/address/1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt">1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt
</A>
143 of EFF have received
2447.38 BitCoins so far. Thank you to each and
144 every one of you that donated bitcoins to support my activity. The
145 fact that anyone can see how much money was transfered to a given
146 address make it more obvious why the BitCoin community recommend to
147 generate and hand out a new address for each transaction. I'm told
148 there is no way to track which addresses belong to a given person or
149 organisation without the person or organisation revealing it
150 themselves, as Simon, EFF and I have done.
</p>
152 <p>In Norway, and in most other countries, there are laws and
153 regulations limiting how much money one can transfer across the border
154 without declaring it. There are money laundering, tax and accounting
155 laws and regulations I would expect to apply to the use of BitCoin.
156 If the Skolelinux foundation
157 (
<a href=
"http://linuxiskolen.no/slxdebianlabs/donations.html">SLX
158 Debian Labs
</a>) were to accept donations in BitCoin in addition to
159 normal bank transfers like EFF is doing, how should this be accounted?
160 Given that it is impossible to know if money can across the border or
161 not, should everything or nothing be declared? What exchange rate
162 should be used when calculating taxes? Would receivers have to pay
163 income tax if the foundation were to pay Skolelinux contributors in
164 BitCoin? I have no idea, but it would be interesting to know.
</p>
166 <p>For a currency to be useful and successful, it must be trusted and
167 accepted by a lot of users. It must be possible to get easy access to
168 the currency (as a wage or using currency exchanges), and it must be
169 easy to spend it. At the moment BitCoin seem fairly easy to get
170 access to, but there are very few places to spend it. I am not really
171 a regular user of any of the vendor types currently accepting BitCoin,
172 so I wonder when my kind of shop would start accepting BitCoins. I
173 would like to buy electronics, travels and subway tickets, not herbs
174 and books. :) The currency is young, and this will improve over time
175 if it become popular, but I suspect regular banks will start to lobby
176 to get BitCoin declared illegal if it become popular. I'm sure they
177 will claim it is helping fund terrorism and money laundering (which
178 probably would be true, as is any currency in existence), but I
179 believe the problems should be solved elsewhere and not by blaming
182 <p>The process of creating new BitCoins is called mining, and it is
183 CPU intensive process that depend on a bit of luck as well (as one is
184 competing against all the other miners currently spending CPU cycles
185 to see which one get the next lump of cash). The "winner" get
50
186 BitCoin when this happen. Yesterday I came across the obvious way to
187 join forces to increase ones changes of getting at least some coins,
188 by coordinating the work on mining BitCoins across several machines
189 and people, and sharing the result if one is lucky and get the
50
191 <a href=
"http://www.bluishcoder.co.nz/bitcoin-pool/">BitCoin Pool
</a>
192 if this sounds interesting. I have not had time to try to set up a
193 machine to participate there yet, but have seen that running on ones
194 own for a few days have not yield any BitCoins througth mining
197 <p>Update
2010-
12-
15: Found an
<a
198 href=
"http://inertia.posterous.com/reply-to-the-underground-economist-why-bitcoi">interesting
199 criticism
</a> of bitcoin. Not quite sure how valid it is, but thought
200 it was interesting to read. The arguments presented seem to be
201 equally valid for gold, which was used as a currency for many years.
</p>
207 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>.
211 <div class=
"padding"></div>
214 <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>
215 <div class=
"date">2010-
12-
11 10:
45</div>
217 <p>Via
<a href=
"http://webmink.com/2010/12/10/links-for-2010-12-10/">en
218 blogpost fra Simon Phipps i går
</a>, fant jeg en referanse til
219 <a href=
"http://www.washingtontimes.com/news/2010/dec/9/exposed-tsas-x-rated-scanner-fraud/">en
220 artikkel i Washington Times
</a> som igjen refererer til en artikkel i
221 det fagfellevurderte tidsskriftet Journal of Transportation Security
223 "
<a href=
"http://springerlink.com/content/g6620thk08679160/fulltext.html">An
224 evaluation of airport x-ray backscatter units based on image
225 characteristics
</a>" som enkelt konstaterer at
226 <a href="http://www.dailysquib.co.uk/?a=
2389&c=
124">pornoscannerne</a>
227 som kler av reisende på flyplasser ikke er i stand til å avsløre det
228 produsenten og amerikanske myndigheter sier de skal avsløre. Kort
229 sagt, de bedrer ikke sikkerheten. Reisende må altså la ansatte på
230 flyplasser <a href="http://www.thousandsstandingaround.org/
">se dem
231 nakne eller la seg beføle i skrittet</a> uten grunn. Jeg vil
232 fortsette å nekte å bruke disse pornoskannerne, unngå flyplasser der
233 de er tatt i bruk, og reise med andre transportmidler enn fly hvis jeg
240 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>.
244 <div class="padding
"></div>
247 <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>
248 <div class="date
">2010-12-09 21:25</div>
250 <p><a href="http://www.bekkelund.net/
">Martin Bekkelund</a> ved
251 <a href="http://www.friprog.no/
">friprog-senteret</a> har skrevet
253 <a href="http://www.bekkelund.net/
2010/
12/
09/en-stille-bonn/
">korte
254 oppsummering</a> rundt datalagringsdirektivet, som jeg videreformidler
257 <p><blockquote><strong>Det pågår i disse dager en intens diskusjon om
258 innføring av Datalagringsdirektivet (<acronym
259 title="Datalagringsdirektivet
">DLD</acronym>) i norsk rett. Kanskje
260 har du gjort deg opp en mening, kanskje er du usikker. I begge
261 tilfeller ber jeg deg lese videre.</strong></p>
263 <p>Samtlige fagmiljøer, både i Norge og EU, har konkludert med at
264 <acronym title="Datalagringsdirektivet
">DLD</acronym> ikke bør
265 innføres på nåværende tidspunkt. Den tekniske kvaliteten på direktivet
266 er dårlig, det griper uforholdsmessig inn i personvernet, det har
267 store mangler og viktige spørsmål som hvem som skal ha tilgang og
268 hvordan data skal lagres er fortsatt uavklart.</p>
271 <li><a href="http://ikt-norge.no/norge-kan-slippe-datalagringsdirektivet/
">EU-ekspertene sier</a> at konsekvensene av å benytte vetoretten er minimale</li>
272 <li><a href="http://www.regjeringen.no/pages/
2281080/Deninternasjonalejuristkommisjon.pdf
">Juristene påpeker</a> at direktivet er i strid med EMK</li>
273 <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>
274 <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>
275 <li><a href="http://www.regjeringen.no/pages/
2281080/NJ_247460_1_P.pdf
">Pressen sier</a> nei av hensyn til kildevernet</li>
276 <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>
277 <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>
280 <p>Jeg liker å tro at jeg er en hyggelig fyr. Jeg har et rent
281 rulleblad, og med unntak av to fartsbøter har jeg aldri vært en byrde
282 for samfunnet. Det akter jeg å fortsette med. Det er mange som meg,
283 lovlydige, pliktoppfyllende borgere som aldri vil utgjøre en trussel
284 mot noe som helst. Vi synes derfor det er trist og sårende at all vår
285 atferd skal overvåkes døgnkontinuerlig.</p>
287 <p><strong>Understøttet av faglige vurderinger kan du trygt si nei til
288 <acronym title="Datalagringsdirektivet
">DLD</acronym>.</strong></p>
290 <p><a href="http://www.bekkelund.net/kontakt/
">Ta kontakt med meg</a>
291 hvis du har spørsmål om <acronym
292 title="Datalagringsdirektivet
">DLD</acronym>, uansett hva det måtte
295 <p class="info
">Denne teksten er å anse som <a
296 href="http://creativecommons.org/licenses/publicdomain/
"><em>Public
297 Domain</em></a>. Spre den videre til alle som kan ha nytte av
301 <p>Siste <a href="http://www.nettavisen.no/it/article3043918.ece
">melding
302 fra Nettavisen</a> er at regjeringen planlegger å fremme sitt forslag
303 til implementering av datalagringsdirektivet i morgen, i ly av
304 fredprisutdelingen for å få minst mulig pressedekning om saken. Vi
305 får snart se om det stemmer.</p>
311 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>.
315 <div class="padding
"></div>
318 <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>
319 <div class="date
">2010-12-09 19:30</div>
321 <p>A few days ago, I was introduces to some students in the robot
322 student assosiation <a href="http://www.robotica.no/
">Robotica
323 Osloensis</a> at the University of Oslo where I work, who planned to
324 get their own 3D printer. They wanted to learn from me based on my
325 work in the area. After having a short lunch meeting with them, I
326 offered them to borrow my reprap kit, as I never had time to complete
327 the build and this seem unlike to change any time soon. I look
328 forward to see how this goes. This monday their volunteer driver
329 picked up my kit and drove it to their lab, and tomorrow I am told the
330 last exam is over so they can start work on getting the 3D printer
333 <p>The robotic group have already build several robots on their own,
334 and seem capable of getting the reprap operational. I really look
335 forward to being able to print all the cool 3D designs published on
336 <a href="http://www.thingiverse.com/
">Thingiverse</a>. I even got
337 some 3D scans I got made during Dagen@IFI when one of the groups at
338 the computer science department at the university demonstrated their
339 very cool 3D scanner.</p>
345 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>.
349 <div class="padding
"></div>
352 <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>
353 <div class="date
">2010-11-29 18:40</div>
355 <p>On friday, the first Debian Edu / Skolelinux
356 <a href="http://www.friprogramvareiskolen.no/Gathering/
2010-
12-
03-
05-Oslo
">development
357 gathering</a> in a long time take place here in Oslo, Norway. I
358 really look forward to seeing all the good people working on the
359 Squeeze release. The gathering is open for everyone interested in
360 learning more about Debian Edu / Skolelinux.</p>
362 <p>On Saturday, the Norwegian member organization taking care of
363 organizing these development gatherings, Fri Programvare i Skolen,
365 <a href="http://friprogramvareiskolen.no/Genfors/
2010">General Assembly
366 for 2010</a>. Membership is open for all, and currently there are 388
367 people registered as members. Last year 32 members cast their vote in
368 the memberdb based election system. I hope more people find time to
375 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>.
379 <div class="padding
"></div>
382 <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>
383 <div class="date
">2010-11-27 11:30</div>
385 <p>In the latest issue of Linux Journal, the readers choices were
386 presented, and the winner among the multimedia player were VLC.
387 Personally, I like VLC, and it is my player of choice when I first try
388 to play a video file or stream. Only if VLC fail will I drag out
389 gmplayer to see if it can do better. The reason is mostly the failure
390 model and trust. When VLC fail, it normally pop up a error message
391 reporting the problem. When mplayer fail, it normally segfault or
392 just hangs. The latter failure mode drain my trust in the program.<p>
394 <p>But even if VLC is my player of choice, we have choosen to use
395 mplayer in <a href="http://www.skolelinux.org/
">Debian
396 Edu/Skolelinux</a>. The reason is simple. We need a good browser
397 plugin to play web videos seamlessly, and the VLC browser plugin is
398 not very good. For example, it lack in-line control buttons, so there
399 is no way for the user to pause the video. Also, when I
400 <a href="http://wiki.debian.org/DebianEdu/BrowserMultimedia
">last
401 tested the browser plugins</a> available in Debian, the VLC plugin
402 failed on several video pages where mplayer based plugins worked. If
403 the browser plugin for VLC was as good as the gecko-mediaplayer
404 package (which uses mplayer), we would switch.</P>
406 <p>While VLC is a good player, its user interface is slightly
407 annoying. The most annoying feature is its inconsistent use of
408 keyboard shortcuts. When the player is in full screen mode, its
409 shortcuts are different from when it is playing the video in a window.
410 For example, space only work as pause when in full screen mode. I
411 wish it had consisten shortcuts and that space also would work when in
412 window mode. Another nice shortcut in gmplayer is [enter] to restart
413 the current video. It is very nice when playing short videos from the
414 web and want to restart it when new people arrive to have a look at
415 what is going on.</p>
421 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>.
425 <div class="padding
"></div>
428 <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>
429 <div class="date
">2010-11-23 14:15</div>
431 <p>Jeg registrerer med vond smak i munnen at Den Norske Dataforening
433 href="http://www.dataforeningen.no/hedret-med-rosingprisen
.4849070-
133913.html
">hedrer
434 overvåkning av barn med Rosingsprisen for kreativitet i år</a>. Jeg
435 er glad jeg nå er meldt ut av DND.</p>
437 <p>Å elektronisk overvåke sine barn er ikke å gjøre dem en tjeneste,
438 men et overgrep mot individer i utvikling som bør læres opp til å ta
441 <p>For å sitere Datatilsynets nye leder, Bjørn Erik Thon, i
442 <a href="http://www.idg.no/computerworld/article174262.ece
">et intervju
443 med Computerworld Norge</A>:</p>
446 - For alle som har barn, meg selv inkludert, er førstetanken at det
447 hadde vært fint å vite hvor barnet sitt er til enhver tid. Men ungene
448 har ikke godt av det. De er små individer som skal søke rundt og finne
449 sine små gjemmesteder og utvide horisonten, uten at foreldrene ser dem
450 i kortene. Det kan være fristende, men jeg ville ikke gått inn i
454 <p>Det er skremmende å se at DND mener en tjeneste som legger opp til
455 slike overgrep bør hedres. Å flytte oppveksten for barn inn i en
457 <a href="http://en.wikipedia.org/wiki/Panopticon
">Panopticon</a> er et
458 grovt overgrep og vil gjøre skade på barnenes utvikling, og foreldre
459 burde tenke seg godt om før de gir etter for sine instinkter her.</p>
461 <p>Blipper-tjenesten får meg til å tenke på bøkene til
462 <a href="http://en.wikipedia.org/wiki/John_Twelve_Hawks
">John Twelve
463 Hawks</a>, som forbilledlig beskriver hvordan et totalitært
464 overvåkningssamfunn bygges sakte men sikkert rundt oss, satt sammen av
465 gode intensjoner og manglende bevissthet om hvilke prinsipper et
466 liberalt demokrati er fundamentert på. Jeg har hatt stor glede av å
467 lese alle de tre bøkene.</p>
473 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>.
477 <div class="padding
"></div>
480 <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>
481 <div class="date
">2010-11-22 14:15</div>
483 <p>Michael Biebl suggested to me on IRC, that I changed my automated
484 upgrade testing of the
485 <a href="http://people.skolelinux.org/~pere/debian-upgrade-testing/
">Lenny
486 Gnome and KDE Desktop</a> to do <tt>apt-get autoremove</tt> when using apt-get.
487 This seem like a very good idea, so I adjusted by test scripts and
488 can now present the updated result from today:</p>
490 <p>This is for Gnome:</p>
492 <p>Installed using apt-get, missing with aptitude</p>
506 freedesktop-sound-theme
508 gconf-defaults-service
523 gnome-desktop-environment
527 gnome-session-canberra
532 gstreamer0.10-fluendo-mp3
541 libaprutil1-dbd-sqlite3
544 libboost-date-time1.42.0
545 libboost-python1.42.0
546 libboost-thread1.42.0
548 libchamplain-gtk-0.4-0
550 libclutter-gtk-0.10-0
557 libfreerdp-plugins-standard
572 libgnomepanel2.24-cil
577 libgtksourceview2.0-common
578 libmono-addins-gui0.2-cil
579 libmono-addins0.2-cil
581 libmono-corlib2.0-cil
582 libmono-i18n-west2.0-cil
584 libmono-security2.0-cil
585 libmono-sharpzip2.84-cil
586 libmono-system2.0-cil
589 libndesk-dbus-glib1.0-cil
600 libtelepathy-farsight0
609 nautilus-sendto-empathy
630 python-gtksourceview2
654 python-zope.interface
659 rhythmbox-plugin-cdrecorder
666 system-config-printer-udev
668 telepathy-mission-control-5
681 <p>Installed using apt-get, removed with aptitude</p>
689 fast-user-switch-applet
708 libgtksourceview2.0-0
716 system-config-printer
723 <p>Installed using aptitude, missing with apt-get</p>
726 gstreamer0.10-gnomevfs
729 <p>Installed using aptitude, removed with apt-get</p>
735 <p>This is for KDE:</p>
737 <p>Installed using apt-get, missing with aptitude</p>
743 <p>Installed using apt-get, removed with aptitude</p>
750 <p>Installed using aptitude, missing with apt-get</p>
768 kdeartwork-theme-icon
772 kdebase-workspace-bin
773 kdebase-workspace-data
802 plasma-dataengines-workspace
804 plasma-desktopthemes-artwork
805 plasma-runners-addons
806 plasma-scriptengine-googlegadgets
807 plasma-scriptengine-python
808 plasma-scriptengine-qedje
809 plasma-scriptengine-ruby
810 plasma-scriptengine-webkit
812 plasma-wallpapers-addons
813 plasma-widget-folderview
814 plasma-widget-networkmanagement
818 xscreensaver-data-extra
820 xscreensaver-gl-extra
821 xscreensaver-screensaver-bsod
824 <p>Installed using aptitude, removed with apt-get</p>
828 google-gadgets-common
851 libkonqsidebarplugin4a
860 libplasma-geolocation-interface4
862 libplasmagenericshell4
905 plasma-dataengines-addons
906 plasma-scriptengine-superkaramba
907 plasma-widget-lancelot
908 plasma-widgets-addons
909 plasma-widgets-workspace
913 update-notifier-common
916 <p>Running apt-get autoremove made the results using apt-get and
917 aptitude a bit more similar, but there are still quite a lott of
918 differences. I have no idea what packages should be installed after
919 the upgrade, but hope those that do can have a look.</p>
925 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>.
929 <div class="padding
"></div>
932 <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>
933 <div class="date
">2010-11-22 11:20</div>
935 <p>Most of the computers in use by the
936 <a href="http://www.skolelinux.org/
">Debian Edu/Skolelinux project</a>
937 are virtual machines. And they have been Xen machines running on a
938 fairly old IBM eserver xseries 345 machine, and we wanted to migrate
939 them to KVM on a newer Dell PowerEdge 2950 host machine. This was a
940 bit harder that it could have been, because we set up the Xen virtual
941 machines to get the virtual partitions from LVM, which as far as I
942 know is not supported by KVM. So to migrate, we had to convert
943 several LVM logical volumes to partitions on a virtual disk file.</p>
946 <a href="http://searchnetworking.techtarget.com.au/articles/
35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM
">a
947 nice recipe</a> to do this, and wrote the following script to do the
948 migration. It uses qemu-img from the qemu package to make the disk
949 image, parted to partition it, losetup and kpartx to present the disk
950 image partions as devices, and dd to copy the data. I NFS mounted the
951 new servers storage area on the old server to do the migration.</p>
957 # http://searchnetworking.techtarget.com.au/articles/35011-Six-steps-for-migrating-Xen-virtual-machines-to-KVM
962 if [ -z "$
1" ] ; then
963 echo "Usage: $
0 <hostname
>"
969 if [ ! -e /dev/vg_data/$host-disk ] ; then
970 echo "error: unable to find LVM volume for $host"
974 # Partitions need to be a bit bigger than the LVM LVs. not sure why.
975 disksize=$( lvs --units m | grep $host-disk | awk '{sum = sum + $
4} END { print int(sum *
1.05) }')
976 swapsize=$( lvs --units m | grep $host-swap | awk '{sum = sum + $
4} END { print int(sum *
1.05) }')
977 totalsize=$(( ( $disksize + $swapsize ) ))
980 #dd if=/dev/zero of=$img bs=
1M count=$(( $disksize + $swapsize ))
981 qemu-img create $img ${totalsize}MMaking room on the Debian Edu/Sqeeze DVD
983 parted $img mklabel msdos
984 parted $img mkpart primary linux-swap
0 $disksize
985 parted $img mkpart primary ext2 $disksize $totalsize
986 parted $img set
1 boot on
989 losetup /dev/loop0 $img
992 dd if=/dev/vg_data/$host-disk of=/dev/mapper/loop0p1 bs=
1M
993 fsck.ext3 -f /dev/mapper/loop0p1 || true
994 mkswap /dev/mapper/loop0p2
997 losetup -d /dev/loop0
1000 <p>The script is perhaps so simple that it is not copyrightable, but
1001 if it is, it is licenced using GPL v2 or later at your discretion.
</p>
1003 <p>After doing this, I booted a Debian CD in rescue mode in KVM with
1004 the new disk image attached, installed grub-pc and linux-image-
686 and
1005 set up grub to boot from the disk image. After this, the KVM machines
1006 seem to work just fine.
</p>
1012 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>.
1016 <div class=
"padding"></div>
1018 <p style=
"text-align: right;"><a href=
"index.rss"><img src=
"http://people.skolelinux.org/pere/blog/xml.gif" alt=
"RSS feed" width=
"36" height=
"14"></a></p>
1032 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/01/">January (
2)
</a></li>
1034 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/02/">February (
1)
</a></li>
1036 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/03/">March (
3)
</a></li>
1038 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/04/">April (
3)
</a></li>
1040 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/05/">May (
9)
</a></li>
1042 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/06/">June (
14)
</a></li>
1044 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/07/">July (
12)
</a></li>
1046 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/08/">August (
13)
</a></li>
1048 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/09/">September (
7)
</a></li>
1050 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/10/">October (
9)
</a></li>
1052 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/11/">November (
13)
</a></li>
1054 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2010/12/">December (
5)
</a></li>
1061 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/01/">January (
8)
</a></li>
1063 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/02/">February (
8)
</a></li>
1065 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/03/">March (
12)
</a></li>
1067 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/04/">April (
10)
</a></li>
1069 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/05/">May (
9)
</a></li>
1071 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/06/">June (
3)
</a></li>
1073 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/07/">July (
4)
</a></li>
1075 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/08/">August (
3)
</a></li>
1077 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/09/">September (
1)
</a></li>
1079 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/10/">October (
2)
</a></li>
1081 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/11/">November (
3)
</a></li>
1083 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2009/12/">December (
3)
</a></li>
1090 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2008/11/">November (
5)
</a></li>
1092 <li><a href=
"http://people.skolelinux.org/pere/blog/archive/2008/12/">December (
7)
</a></li>
1103 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (
13)
</a></li>
1105 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/amiga">amiga (
1)
</a></li>
1107 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/aros">aros (
1)
</a></li>
1109 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (
1)
</a></li>
1111 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (
10)
</a></li>
1113 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/debian">debian (
45)
</a></li>
1115 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (
53)
</a></li>
1117 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/english">english (
76)
</a></li>
1119 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (
1)
</a></li>
1121 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (
11)
</a></li>
1123 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/kart">kart (
5)
</a></li>
1125 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/ldap">ldap (
8)
</a></li>
1127 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/lenker">lenker (
4)
</a></li>
1129 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (
1)
</a></li>
1131 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (
11)
</a></li>
1133 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/norsk">norsk (
93)
</a></li>
1135 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/nuug">nuug (
114)
</a></li>
1137 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (
18)
</a></li>
1139 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/personvern">personvern (
29)
</a></li>
1141 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/reprap">reprap (
11)
</a></li>
1143 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/robot">robot (
4)
</a></li>
1145 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/rss">rss (
1)
</a></li>
1147 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (
21)
</a></li>
1149 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (
3)
</a></li>
1151 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/standard">standard (
16)
</a></li>
1153 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (
1)
</a></li>
1155 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/video">video (
16)
</a></li>
1157 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (
1)
</a></li>
1159 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/web">web (
14)
</a></li>
1165 <p style=
"text-align: right">
1166 Created by
<a href=
"http://steve.org.uk/Software/chronicle">Chronicle v3.2
</a>