blog/tags/raid/index.html

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  13  <h1>
  14      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21     <h3>Entries tagged "raid".</h3>
  22
  23     <div class="entry">
  24       <div class="title">
  25         <a href="http://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html">Some notes on fault tolerant storage systems</a>
  26       </div>
  27       <div class="date">
  28          1st November 2017
  29       </div>
  30       <div class="body">
  31         <p>If you care about how fault tolerant your storage is, you might
  32 find these articles and papers interesting.  They have formed how I
  33 think of when designing a storage system.</p>
  34
  35 <ul>
  36
  37 <li>USENIX :login; <a
  38 href="https://www.usenix.org/publications/login/summer2017/ganesan">Redundancy
  39 Does Not Imply Fault Tolerance.  Analysis of Distributed Storage
  40 Reactions to Single Errors and Corruptions</a> by Aishwarya Ganesan,
  41 Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
  42 H. Arpaci-Dusseau</li>
  43
  44 <li>ZDNet
  45 <a href="http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/">Why
  46 RAID 5 stops working in 2009</a> by Robin Harris</li>
  47
  48 <li>ZDNet
  49 <a href="http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/">Why
  50 RAID 6 stops working in 2019</a> by Robin Harris</li>
  51
  52 <li>USENIX FAST'07
  53 <a href="http://research.google.com/archive/disk_failures.pdf">Failure
  54 Trends in a Large Disk Drive Population</a> by Eduardo Pinheiro,
  55 Wolf-Dietrich Weber and Luiz André Barroso</li>
  56
  57 <li>USENIX ;login: <a
  58 href="https://www.usenix.org/system/files/login/articles/hughes12-04.pdf">Data
  59 Integrity.  Finding Truth in a World of Guesses and Lies</a> by Doug
  60 Hughes</li>
  61
  62 <li>USENIX FAST'08
  63 <a href="https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/">An
  64 cAnalysis of Data Corruption in the Storage Stack</a> -
  65 L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
  66 Arpaci-Dusseau, and R. H. Arpaci-Dusseau</li>
  67
  68 <li>USENIX FAST'07 <a
  69 href="https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/">Disk
  70 failures in the real world: what does an MTTF of 1,000,000 hours mean
  71 to you?</a> by B. Schroeder and G. A. Gibson.</li>
  72
  73 <li>USENIX ;login: <a
  74 href="https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/">Are
  75 Disks the Dominant Contributor for Storage Failures?  A Comprehensive
  76 Study of Storage Subsystem Failure Characteristics</a> by Weihang
  77 Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky</li>
  78
  79 <li>SIGMETRICS 2007
  80 <a href="http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf">An
  81 analysis of latent sector errors in disk drives</a> -
  82 L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler</li>
  83
  84 </ul>
  85
  86 <p>Several of these research papers are based on data collected from
  87 hundred thousands or millions of disk, and their findings are eye
  88 opening.  The short story is simply do not implicitly trust RAID or
  89 redundant storage systems.  Details matter.  And unfortunately there
  90 are few options on Linux addressing all the identified issues.  Both
  91 ZFS and Btrfs are doing a fairly good job, but have legal and
  92 practical issues on their own.  I wonder how cluster file systems like
  93 Ceph do in this regard.</p>
  94
  95 <p>Just remember, in the end, it do not matter how redundant, or how
  96 fault tolerant your storage is, if you do not continuously monitor its
  97 status to detect and replace failed disks.</p>
  98
  99       </div>
 100       <div class="tags">
 101
 102
 103         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/raid">raid</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 104
 105
 106       </div>
 107     </div>
 108     <div class="padding"></div>
 109
 110     <div class="entry">
 111       <div class="title">
 112         <a href="http://people.skolelinux.org/pere/blog/How_to_figure_out_which_RAID_disk_to_replace_when_it_fail.html">How to figure out which RAID disk to replace when it fail</a>
 113       </div>
 114       <div class="date">
 115         14th February 2012
 116       </div>
 117       <div class="body">
 118         <p>Once in a while my home server have disk problems.  Thanks to Linux
 119 Software RAID, I have not lost data yet (but
 120 <a href="http://comments.gmane.org/gmane.linux.raid/34532">I was
 121 close</a> this summer :).  But once a disk is starting to behave
 122 funny, a practical problem present itself.  How to get from the Linux
 123 device name (like /dev/sdd) to something that can be used to identify
 124 the disk when the computer is turned off?  In my case I have SATA
 125 disks with a unique ID printed on the label.  All I need is a way to
 126 figure out how to query the disk to get the ID out.</p>
 127
 128 <p>After fumbling a bit, I
 129 <a href="http://www.cyberciti.biz/faq/linux-getting-scsi-ide-harddisk-information/">found
 130 that hdparm -I</a> will report the disk serial number, which is
 131 printed on the disk label.  The following (almost) one-liner can be
 132 used to look up the ID of all the failed disks:</p>
 133
 134 <blockquote><pre>
 135 for d in $(cat /proc/mdstat |grep '(F)'|tr ' ' "\n"|grep '(F)'|cut -d\[ -f1|sort -u);
 136 do
 137     printf "Failed disk $d: "
 138     hdparm -I /dev/$d |grep 'Serial Num'
 139 done
 140 </blockquote></pre>
 141
 142 <p>Putting it here to make sure I do not have to search for it the
 143 next time, and in case other find it useful.</p>
 144
 145 <p>At the moment I have two failing disk. :(</p>
 146
 147 <blockquote><pre>
 148 Failed disk sdd1:       Serial Number:      WD-WCASJ1860823
 149 Failed disk sdd2:       Serial Number:      WD-WCASJ1860823
 150 Failed disk sde2:       Serial Number:      WD-WCASJ1840589
 151 </blockquote></pre>
 152
 153 <p>The last time I had failing disks, I added the serial number on
 154 labels I printed and stuck on the short sides of each disk, to be able
 155 to figure out which disk to take out of the box without having to
 156 remove each disk to look at the physical vendor label.  The vendor
 157 label is at the top of the disk, which is hidden when the disks are
 158 mounted inside my box.</p>
 159
 160 <p>I really wish the check_linux_raid Nagios plugin for checking Linux
 161 Software RAID in the
 162 <a href="http://packages.qa.debian.org/n/nagios-plugins.html">nagios-plugins-standard</a>
 163 debian package would look up this value automatically, as it would
 164 make the plugin a lot more useful when my disks fail.  At the moment
 165 it only report a failure when there are no more spares left (it really
 166 should warn as soon as a disk is failing), and it do not tell me which
 167 disk(s) is failing when the RAID is running short on disks.</p>
 168
 169       </div>
 170       <div class="tags">
 171
 172
 173         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/raid">raid</a>.
 174
 175
 176       </div>
 177     </div>
 178     <div class="padding"></div>
 179
 180     <p style="text-align: right;"><a href="raid.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 181     <div id="sidebar">
 182
 183
 184
 185 <h2>Archive</h2>
 186 <ul>
 187
 188 <li>2017
 189 <ul>
 190
 191 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 192
 193 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 194
 195 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 196
 197 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 198
 199 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 200
 201 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 202
 203 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 204
 205 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 206
 207 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 208
 209 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (1)</a></li>
 210
 211 </ul></li>
 212
 213 <li>2016
 214 <ul>
 215
 216 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 217
 218 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 219
 220 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 221
 222 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 223
 224 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 225
 226 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 227
 228 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 229
 230 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 231
 232 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 233
 234 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 235
 236 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 237
 238 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 239
 240 </ul></li>
 241
 242 <li>2015
 243 <ul>
 244
 245 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 246
 247 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 248
 249 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 250
 251 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 252
 253 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 254
 255 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 256
 257 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 258
 259 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 260
 261 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 262
 263 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 264
 265 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 266
 267 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 268
 269 </ul></li>
 270
 271 <li>2014
 272 <ul>
 273
 274 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 275
 276 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 277
 278 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 279
 280 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 281
 282 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 283
 284 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 285
 286 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 287
 288 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 289
 290 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 291
 292 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 293
 294 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 295
 296 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 297
 298 </ul></li>
 299
 300 <li>2013
 301 <ul>
 302
 303 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 304
 305 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 306
 307 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 308
 309 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 310
 311 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 312
 313 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 314
 315 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 316
 317 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 318
 319 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 320
 321 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 322
 323 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 324
 325 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 326
 327 </ul></li>
 328
 329 <li>2012
 330 <ul>
 331
 332 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 333
 334 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 335
 336 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 337
 338 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 339
 340 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 341
 342 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 343
 344 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 345
 346 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 347
 348 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 349
 350 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 351
 352 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 353
 354 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 355
 356 </ul></li>
 357
 358 <li>2011
 359 <ul>
 360
 361 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 362
 363 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 364
 365 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 366
 367 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 368
 369 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 370
 371 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 372
 373 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 374
 375 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 376
 377 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 378
 379 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 380
 381 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 382
 383 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 384
 385 </ul></li>
 386
 387 <li>2010
 388 <ul>
 389
 390 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 391
 392 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 393
 394 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 395
 396 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 397
 398 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 399
 400 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 401
 402 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 403
 404 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 405
 406 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 407
 408 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 409
 410 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 411
 412 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 413
 414 </ul></li>
 415
 416 <li>2009
 417 <ul>
 418
 419 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 420
 421 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 422
 423 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 424
 425 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 426
 427 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 428
 429 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 430
 431 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 432
 433 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 434
 435 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 436
 437 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 438
 439 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 440
 441 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 442
 443 </ul></li>
 444
 445 <li>2008
 446 <ul>
 447
 448 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 449
 450 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 451
 452 </ul></li>
 453
 454 </ul>
 455
 456
 457
 458 <h2>Tags</h2>
 459 <ul>
 460
 461  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (14)</a></li>
 462
 463  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 464
 465  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 466
 467  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 468
 469  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
 470
 471  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (16)</a></li>
 472
 473  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 474
 475  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 476
 477  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (154)</a></li>
 478
 479  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
 480
 481  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
 482
 483  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
 484
 485  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
 486
 487  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (24)</a></li>
 488
 489  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
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 491  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (358)</a></li>
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 493  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
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 495  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
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 497  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (30)</a></li>
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 501  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (18)</a></li>
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 505  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
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 508
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 510
 511  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 512
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 514
 515  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 516
 517  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 518
 519  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 520
 521  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (39)</a></li>
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 523  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (9)</a></li>
 524
 525  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (293)</a></li>
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 527  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (189)</a></li>
 528
 529  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
 530
 531  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 532
 533  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (65)</a></li>
 534
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 536
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 541  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
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 543  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
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 546
 547  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 548
 549  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (5)</a></li>
 550
 551  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
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 553  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (53)</a></li>
 554
 555  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
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 557  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 558
 559  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
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 561  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
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 563  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
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 565  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (52)</a></li>
 566
 567  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
 568
 569  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 570
 571  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 572
 573  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (59)</a></li>
 574
 575  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 576
 577  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (40)</a></li>
 578
 579 </ul>
 580
 581
 582     </div>
 583     <p style="text-align: right">
 584  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 585 </p>
 586
 587   </body>
 588 </html>