[mythtv-users] mythbackend deletes recording extremely fast

[Michael T. Dean]

On 04/28/2014 01:15 PM, Martin Compton wrote:
> On 04/28/2014 06:02 AM, Michael T. Dean wrote:
>> On 04/27/2014 06:25 PM, Karl Dietz wrote:
>>> On 27.04.2014 20:09, Nicolas Krzywinski wrote:
>>>
>>>> some recordings my MythTV box deletes really fast after the recording
>>>> time (slightly over 3 hours). Additionally this is a permanent delete
>>>> without the possibility to recover from the auto expire screen in
>>>> mythfrontend.
>>>> There are other recordings scheduled for deletion with equal priority
>>>> that are much older!
>>>>
>>>> Does mythbackend treat this recording as LiveTV type? It was no 
>>>> live tv,
>>>> but a "power search" recording rule of weekly type.
>>>> This does not happen arbitrarily for all types of recordings, it does
>>>> happen only to specific recordings ... but I have no clue why?
>>>
>>> I think this thread may contain some hints
>>> http://www.mythtv.org/pipermail/mythtv-users/2012-December/343988.html
>>>
>>> Basically the first guess is that you may have multiple file systems 
>>> with unbalanced expire-able recordings.
>>
>> And make sure you do not use the Balanced Free Space (default) or 
>> Balanced Percent Free Space Storage Group Disk Schedulers if you're 
>> running with full file systems and relying on auto-expire for deletion.
>>
>> http://www.gossamer-threads.com/lists/mythtv/users/532093#532093
> If I understand correctly, when relying on "Auto Expire" to clear disk 
> space one should use "Balanced Disk I/O"?

Balanced I/O and Combination are both fine.  Balanced Free Space and 
Balanced Percent Free Space are the bad ones.

> I have experienced similar issues using "Combination".  Should I 
> investigate the non-IU "Weighting" options closely?

That won't help in this situation.  It would only make it choose one 
file system after the other.  You still need to either balance your 
auto-expirable recordings or manually delete recordings to make 
available space.  (You can delete shows from the Deleted recording group 
to completely remove them from disk, so that you can better see where 
space is available/needed.  You can also manually (outside of MythTV) 
move recording files from file system to file system (on the same host) 
without needing to change anything in MythTV.)

Mike