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 xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
   4   <head>
   5     <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
   6     <title>Petter Reinholdtsen: Broken hard link handling with sshfs</title>
   7     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/style.css" />
   8     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/vim.css" />
   9   </head>
  10   <body>
  11     <div class="title">
  12  <h1>
  13      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  14
  15  </h1>
  16
  17 </div>
  18
  19
  20     <div class="entry">
  21       <div class="title">Broken hard link handling with sshfs</div>
  22       <div class="date">30th August 2010</div>
  23       <div class="body"><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
  51     </div>
  52
  53
  54
  55
  56     <div id="sidebar">
  57
  58
  59
  60 <h2>Archive</h2>
  61 <ul>
  62
  63 <li>2011
  64 <ul>
  65
  66 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
  67
  68 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
  69
  70 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
  71
  72 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
  73
  74 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
  75
  76 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
  77
  78 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
  79
  80 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
  81
  82 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
  83
  84 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
  85
  86 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
  87
  88 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
  89
  90 </ul></li>
  91
  92 <li>2010
  93 <ul>
  94
  95 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
  96
  97 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
  98
  99 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 100
 101 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 102
 103 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 104
 105 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 106
 107 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 108
 109 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 110
 111 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 112
 113 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 114
 115 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 116
 117 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 118
 119 </ul></li>
 120
 121 <li>2009
 122 <ul>
 123
 124 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 125
 126 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 127
 128 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 129
 130 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 131
 132 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 133
 134 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 135
 136 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 137
 138 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 139
 140 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 141
 142 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 143
 144 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 145
 146 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 147
 148 </ul></li>
 149
 150 <li>2008
 151 <ul>
 152
 153 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 154
 155 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 156
 157 </ul></li>
 158
 159 </ul>
 160
 161
 162
 163 <h2>Tags</h2>
 164 <ul>
 165
 166  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
 167
 168  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 169
 170  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 171
 172  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (2)</a></li>
 173
 174  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (12)</a></li>
 175
 176  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 177
 178  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (54)</a></li>
 179
 180  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (64)</a></li>
 181
 182  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (7)</a></li>
 183
 184  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (98)</a></li>
 185
 186  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (13)</a></li>
 187
 188  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
 189
 190  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (11)</a></li>
 191
 192  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (15)</a></li>
 193
 194  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
 195
 196  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (4)</a></li>
 197
 198  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 199
 200  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (14)</a></li>
 201
 202  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (141)</a></li>
 203
 204  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (119)</a></li>
 205
 206  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 207
 208  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (24)</a></li>
 209
 210  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (46)</a></li>
 211
 212  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 213
 214  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (2)</a></li>
 215
 216  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (4)</a></li>
 217
 218  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 219
 220  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (23)</a></li>
 221
 222  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
 223
 224  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (24)</a></li>
 225
 226  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
 227
 228  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (2)</a></li>
 229
 230  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (9)</a></li>
 231
 232  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (6)</a></li>
 233
 234  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (22)</a></li>
 235
 236  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
 237
 238  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (17)</a></li>
 239
 240 </ul>
 241
 242
 243     </div>
 244     <p style="text-align: right">
 245  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.4</a>
 246 </p>
 247
 248   </body>
 249 </html>