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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Recently I started having trouble with SQLite on NFS. SQLite databases appear to be always locked, even the very moment when they are created (e.g. through v.out.ogr). Not sure what the reason might
be as several things were changed at once: OS / package update, changed mounting routine...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">There are voices saying that SQLite should not be used on NFS at all:
</span><span style="color:#1F497D"><a href="http://stackoverflow.com/questions/9907429/locking-sqlite-file-on-nfs-filesystem-possible"><span lang="EN-US">http://stackoverflow.com/questions/9907429/locking-sqlite-file-on-nfs-filesystem-possible</span></a></span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">And it seems that many (if not all) operative systems (Ubuntu, RedHat, Windows...) are having trouble with file-locking on NFS, see:</span><span lang="EN-US">
</span><span style="color:#1F497D"><a href="https://www.sqlite.org/faq.html#q5"><span lang="EN-US">https://www.sqlite.org/faq.html#q5</span></a></span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Mounting the share with “nolock”-option makes it possible to create SQLite DBs on NFS, but I am afraid that this could have unpredictable side effects!?. It would be a pity if we could not use SQLite
on NFS reliably...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">I tried if I can work around this, by moving temporary files to the local file system (as described here:
<a href="https://trac.osgeo.org/grass/ticket/2185"><span style="color:#1F497D;text-decoration:none">https://trac.osgeo.org/grass/ticket/2185</span></a>). But that does not seem to have any effect. How can I check if TMPDIR and GRASS_TMPDIR_MAPSET are taken
into account?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Thanks for helping in advance...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Stefan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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