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<p class="MsoNormal">Hi PhilTheHill</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">thanks a lot for those guidelines</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">I'm currently running 6.0.0 Beta2 on windows 10
(default configuration with sqllite), and I noticed you mentionned
a step 3 : Configure the new ‘Similarity Db’ <br>
</p>
<p class="MsoNormal">can you precise what need to be done? I
currently tried to use similarity , but didin't found any button
in the inteface to launch the search, could it come from missing
this steps ?<br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">I see effectively the recognition, digikam and
thumbnails databases , but not the similarity one</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">I'm joining to you to warmely thanks the
digikam team to provide us this excellent product.</p>
<p class="MsoNormal">and Merry Christmas to yo</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal">regards</p>
<p class="MsoNormal">frederic</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<p class="MsoNormal"><br>
</p>
<div class="moz-cite-prefix">Le 21/12/2018 à 08:50,
<a class="moz-txt-link-abbreviated" href="mailto:digikam@styles.me.uk">digikam@styles.me.uk</a> a écrit :<br>
</div>
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<p class="MsoNormal">Having noticed that the release of digiKam
6.0.0 is imminent according to the <a
href="https://www.digikam.org/documentation/releaseplan/"
moz-do-not-send="true">Release Plan</a> I thought I’d pen a
few words on the upgrade from a user viewpoint.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been quietly testing the 5.9.0 to
6.0.0 betas for some time now and as recent emails have
pointed out, there is a database upgrade involved.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For a major release, this should be
expected and if you’re intending to use digiKam seriously, you
should already be backing up your database regularly but
especially before any upgrade, major or minor!!! I’m using
digiKam on Windows 10 with MariaDB on Centos 7 for the
database so this means running something like<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">mysqldump --add-drop-table -h 127.0.0.1 -u
${USER} -p${DB_PASSWORD} digikam_core | bzip2 -c
>~/backups/digikam_core.sql.bz2<o:p></o:p></p>
<p class="MsoNormal">mysqldump --add-drop-table -h 127.0.0.1 -u
${USER} -p${DB_PASSWORD} digikam_thumbs | bzip2 -c
>~/backups/digikam_thumbs.sql.bz2<o:p></o:p></p>
<p class="MsoNormal">mysqldump --add-drop-table -h 127.0.0.1 -u
${USER} -p${DB_PASSWORD} digikam_faces | bzip2 -c
>~/backups/digikam_faces.sql.bz2<o:p></o:p></p>
<p class="MsoNormal">mysqldump --add-drop-table -h 127.0.0.1 -u
${USER} -p${DB_PASSWORD} digikam_similarity | bzip2 -c
>~/backups/digikam_similarity.sql.bz2<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You should note that there is a fourth
digicam_similarity database which is introduced with 6.0.0. I
would recommend creating an empty database on your 5.9.0
server which 5.9.0 will ignore but 6.0.0 will use (and it will
already be included in your backup scripts).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you’re planning to test digiKam
seriously, create a digikam6 database owned by a different
user with a different password (which helps to minimise
‘accessing the wrong database’ problems) and restore the 5.9.0
databases for use by digiKam 6.0.0.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">bunzip2 -c
<~digikam/backups/digikam_core.sql.bz2 | mysql -h 127.0.0.1
-u ${USER} -p${DB_PASSWORD} digikam6_core<o:p></o:p></p>
<p class="MsoNormal">bunzip2 -c
<~digikam/backups/digikam_thumbs.sql.bz2 | mysql -h
127.0.0.1 -u ${USER} -p${DB_PASSWORD} digikam6_thumbs<o:p></o:p></p>
<p class="MsoNormal">bunzip2 -c
<~digikam/backups/digikam_faces.sql.bz2 | mysql -h
127.0.0.1 -u ${USER} -p${DB_PASSWORD} digikam6_faces<o:p></o:p></p>
<p class="MsoNormal">bunzip2 -c
<~digikam/backups/digikam_similarity.sql.bz2 | mysql -h
127.0.0.1 -u ${USER} -p${DB_PASSWORD} digikam6_similarity<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For testing digiKam itself, use a second
system, either a physical system or a virtual machine and NOT
your live digiKam install!!! All software has bugs or
‘unexpected features’ and beta software often has even more;
expect problems and plan accordingly. On your test system,
install digKam 5.9.0 (or whatever version you’re currently
using), copy over digikamrc from your working installation and
edit it to refer to the 6.0.0 database. You’ve now ‘cloned’
your 5.9.0 install and database so test it works and fix any
problems before proceeding. You can then upgrade your test
5.9.0 install to 6.0.0. as this tests the software upgrade
process for your setup.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After upgrading your test install to 6.0.0
you can finally try it. What can you expect? Your anti-virus
software may object to unsigned programs so be prepared to
deal with this. From my observations, the first time digKam
6.0.0 runs against a 5.9.0 database, it takes a loooooooong
time to startup which, given that there’s a database upgrade,
should be expected. Go and have a cup of tea/coffee and give
it time to finish! In addition, even when digicam 6.0.0
appears ‘ready to use’ there are background activities still
in running so check both digicam itself (task manager on
Windows) and the database server (top on Linux) are idle
before trying to use digicam seriously. Depending on your
hardware and database size, this may take a couple of hours.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve used this process to test all the
recent betas without impacting my working 5.9.0 setup and,
encouragingly, have not encountered any major problems.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you’re not wanting to test the beta
releases, life is a little simpler so ….<o:p></o:p></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph"
style="margin-left:18.0pt;mso-list:l0 level1 lfo1">Backup
your current database, pictures and digikamrc to two
different places e.g. NAS and offline disk – anything
important should be stored in three different places<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:18.0pt;mso-list:l0 level1 lfo1">Install
the digiKam 6.0.0 software package and run it<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:18.0pt;mso-list:l0 level1 lfo1">Go for a
tea/coffee and check it’s finished. Then go for lunch and
check it’s really finished.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:18.0pt;mso-list:l0 level1 lfo1">Configure
the new ‘Similarity Db’<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:18.0pt;mso-list:l0 level1 lfo1">Test it!
Thrash it!!! Run though all database maintenance activities,
check critical workflow functions as expected, try new
functionality and consider if performance is OK.<o:p></o:p></li>
</ol>
<p class="MsoNormal">Until you actually start using it for new
work, you can still revert to 5.9.0 (software and database)
and all you’ve lost is some time.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And finally, thanks to all the hard work by
the digiKam team in producing an excellent product, Respect
earned!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">PhilTheHill<o:p></o:p></p>
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