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<div class="moz-cite-prefix">On 02/17/2018 10:39 AM, Nicolas
Krzywinski wrote:<br>
</div>
<blockquote type="cite"
cite="mid:09ada2b1-a25a-3bc0-b67a-aaabe6601405@site7even.de">
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<p>Hi all,</p>
<p>my MythTV system runs for a long time now on semi-heavy duty
and provides excellent service. Thanks to all people that ever
participated in making this possible!</p>
<p>While I run this system for a long time in a version-freezed
state on purpose, I am planning to upgrade now. The reason for
the version freeze was the demand of time and skills, any
upgrade requested from me - as I am not good in this and always
struggled with these challenges, I decided to stop doing any
upgrades.</p>
<p>Now I wonder of the best upgrade strategy:</p>
<ol>
<li>16.04 --> 0.28 --> 0.29<br>
</li>
<li>0.28 --> 16.04 --> 0.29</li>
<li>0.28 --> 0.29 --> 16.04</li>
<li>16.04 --> 0.29</li>
<li>0.29 --> 16.04</li>
</ol>
<p>where:</p>
<ul>
<li>16.04 means upgrading to Ubuntu 16.04</li>
<li>0.28 means upgrading to MythTV 0.28</li>
<li>0.29 means upgrading to MythTV 0.29</li>
</ul>
<p>each from the respective system state.</p>
<p>Bringing the current system to the most recent state of 14.04.x
always is the prerequisite step zero, of course.</p>
<p>Pausing or stopping at one intermediate step are options as
well, if there are some reasons.</p>
<p>As for all my upgrades on all of my systems, I will do a full
system backup on an external ssd prior to the upgrade process
(and will test if the system is able to directly boot from this
backup), cause loosing MythTV services would be a medium
catastrophe! ;-)</p>
<p>Thanks in advance for any recommendations, experiences or
warnings, regarding the upgrade procedure from these versions
and/or when having my hardware devices (see below).<br>
</p>
<pre class="moz-signature" cols="72">--
Nicolas
MythTV fixes/0.27 [v0.27.4-30-g3b43903]
Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-45-generic x86_64)
Digital Devices GmbH Octopus DVB Adapter via ddbridge kernel module
15c2:0036 SoundGraph Inc. LC16M VFD Display/IR Receiver (imon) via LIRC/devinput
Intel Corporation Core Processor Integrated Graphics Controller (rev 12)
</pre>
<br>
</blockquote>
I would recommend waiting until April for the next Ubuntu Long Term
release 18.04, that will mean you have 5 years before you need to
upgrade again.<br>
<br>
What I normally do is create an extra partition of 30 GB to install
the next Operating system version, so that the current version is
still available until you have everything working. I prefer not to
upgrade the operating system in place.<br>
<br>
You can install the new operating system version and MythTV version
29 in a new partition. You do not need to upgrade MythTV from 0.27
to 0.28 and then to 29. You can go direct from 0.27 to 29.<br>
<br>
If you set up a new partition and install the Operating system
there, grub will create a boot menu with both systems and the new
one starting up by default. I recommend reinstall grub into the
original partition so that one boots by default and the new one is
available for selection. Once you are ready to switch to the new
one, reinstall grub into the new partition, so that it boots by
default and the old one is available for selection.<br>
<br>
You can take a database backup from the old partition and restore it
into the new partition. Run mythtv-setup to upgrade the database to
version 29. You can do testing in the new partition and then reboot
to switch to the old partition for recording. Once you are happy
with the new system you can backup and restore the database again in
case there were more recordings made on the old system.<br>
<br>
It is important to make sure the mythtv user name keeps the same
numeric id in the new partition, or else change your recordings
permissions/ownership so that the new system can access them.<br>
<br>
Peter<br>
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