[mythtv-users] Error parsing config.xml?

[Michael T. Dean]

On 05/10/2012 03:50 PM, Stefan D wrote:
> On Thu, May 10, 2012 at 9:31 PM, Stefan D wrote:
>
>> I have a little problem that occurred when i updated today. When i try to
>> start mythbackend i get:
>>
>> 2012-05-10 21:16:03.314086 E [31899/31899] CoreContext
>> configuration.cpp:67 (Load) - Error parsing:
>> /home/mythtv/.mythtv/config.xml at line: 1  column: 1
>>
>> I do have a valid config.xml at that location, i have checked the settings
>> and verified that changes does get written to the file. Everyone have
>> permission to read the file.
>>
>> This only happens when i use my upstart script and use "--user mythtv", if
>> i start it from the console with only "mythbackend" everything works fine.
>>
>> I have probably missed something obvious, but what? I probably always had
>> this problem but it shows now when support for mysql.txt has been removed.
> My fault, there wasn't a valid config.xml at that location. Brain freeze.
>

Yes, there's an issue with 0.25-fixes that can result in your config.xml 
getting deleted.  It's a race condition that's been there for a long 
time (forever?), but that only became apparent due to some major "behind 
the scenes" changes between 0.24 and 0.25.

The fix was too invasive to go into 0.25, so until 0.26 is released, 
you'll just have to watch for issues when starting applications (and 
might want to keep a backup copy of the config.xml for each host to make 
restoring it easier).  Or, just modify your start script temporarily 
(you'll definitely want to remove this for unstable/development or 0.26) 
to copy the backup config.xml into place before starting 
mythbackend/mythfrontend.  If config.xml is lost while mythbackend is 
running and your mythpreviewgen/mythcommflag/mythtranscode jobs fail, 
you can always restart those jobs after restoring the backup config.xml.

Mike