blog/Broken_hard_link_handling_with_sshfs.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   2         "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   3 <html>
   4  <head>
   5   <title>Petter Reinholdtsen: Broken hard link handling with sshfs</title>
   6   <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/style.css">
   7  </head>
   8  <body>
   9
  10  <div class="title">
  11   <h1>
  12        <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  13
  14   </h1>
  15
  16  </div>
  17
  18
  19  <div class="entry">
  20   <div class="title">Broken hard link handling with sshfs</div>
  21   <div class="date">2010-08-30 19:30</div>
  22   <div class="body">
  23 <p>Just got an email from Tobias Gruetzmacher as a followup on my
  24 <a href="http://people.skolelinux.org/pere/blog/Broken_umask_handling_with_sshfs.html">previous
  25 post about sshfs</a>.  He reported another problem with sshfs.  It
  26 fail to handle hard links properly.  A simple way to spot this is to
  27 look at the . and .. entries in the directory tree.  These should have
  28 a link count >1, but on sshfs the count is 1.  I just tested to see
  29 what happen when trying to hardlink, and this fail as well:</p>
  30
  31 <pre>
  32 % ln foo bar
  33 ln: creating hard link `bar' => `foo': Function not implemented
  34 %
  35 </pre>
  36
  37 <p>I have not yet found time to implement a test for this in my file
  38 system test code, but believe having working hard links is useful to
  39 avoid surprised unix programs.  Not as useful as working file locking
  40 and symlinks, which are required to get a working desktop, but useful
  41 nevertheless. :)</p>
  42
  43 <p>The latest version of the file system test code is available via
  44 git from
  45 <a href="http://github.com/gebi/fs-test">http://github.com/gebi/fs-test</a></p>
  46 </div>
  47
  48   <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/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.</div>
  49
  50   </div>
  51
  52
  53
  54
  55
  56
  57 <div id="sidebar">
  58
  59 <h2>Archive</h2>
  60 <ul>
  61
  62 <li>2011
  63 <ul>
  64
  65 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
  66
  67 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
  68
  69 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
  70
  71 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (2)</a></li>
  72
  73 </ul></li>
  74
  75 <li>2010
  76 <ul>
  77
  78 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
  79
  80 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
  81
  82 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
  83
  84 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
  85
  86 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
  87
  88 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
  89
  90 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
  91
  92 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
  93
  94 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
  95
  96 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
  97
  98 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
  99
 100 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 101
 102 </ul></li>
 103
 104 <li>2009
 105 <ul>
 106
 107 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 108
 109 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 110
 111 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 112
 113 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 114
 115 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 116
 117 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 118
 119 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 120
 121 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 122
 123 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 124
 125 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 126
 127 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 128
 129 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 130
 131 </ul></li>
 132
 133 <li>2008
 134 <ul>
 135
 136 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 137
 138 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 139
 140 </ul></li>
 141
 142 </ul>
 143
 144
 145
 146 <h2>Tags</h2>
 147 <ul>
 148
 149  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
 150
 151  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 152
 153  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 154
 155  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (2)</a></li>
 156
 157  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (10)</a></li>
 158
 159  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (49)</a></li>
 160
 161  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (62)</a></li>
 162
 163  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (7)</a></li>
 164
 165  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (87)</a></li>
 166
 167  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (7)</a></li>
 168
 169  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (11)</a></li>
 170
 171  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (8)</a></li>
 172
 173  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (13)</a></li>
 174
 175  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
 176
 177  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (4)</a></li>
 178
 179  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 180
 181  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (11)</a></li>
 182
 183  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (119)</a></li>
 184
 185  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (116)</a></li>
 186
 187  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (20)</a></li>
 188
 189  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (38)</a></li>
 190
 191  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 192
 193  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (2)</a></li>
 194
 195  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (4)</a></li>
 196
 197  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 198
 199  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (23)</a></li>
 200
 201  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
 202
 203  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (24)</a></li>
 204
 205  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
 206
 207  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (8)</a></li>
 208
 209  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (19)</a></li>
 210
 211  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
 212
 213  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (14)</a></li>
 214
 215 </ul>
 216
 217 </div>
 218  </body>
 219 </html>