Indexing errors with beagle 0.1.0 / question concerning io-priority

[Jan Taegert <jan cosmopilot net>]

Hello,

on indexing my data, beagle from time to time brings the following
reproducible error messages:

1.) When some file (here:
/home/mochila/media/abspiellisten/Unbetitelt.m3u) is trashed:
> 05-09-16 13.11.14.06 31524 Beagle DEBUG: Synthesizing event on unpaired MoveFrom
> 05-09-16 13.11.14.06 31524 Beagle DEBUG: *** Remove '/home/mochila/media/abspiellisten' 'Unbetitelt.m3u' (file)
> 05-09-16 13.11.15.48 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.11.15.49 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.11.15.49 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.11.15.50 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.11.15.50 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.11.15.50 31524 Beagle ERROR: Exception limit exceeded trying to activate a helper.  Giving up on indexing!
> 05-09-16 13.11.15.50 31524 Beagle ERROR: Something terrible happened --- Flush failed

- Slightly different, when the same file is deleted:
> 05-09-16 13.12.04.16 31524 Beagle DEBUG: *** Remove '/home/mochila/media/abspiellisten' 'Unbetitelt.m3u' (file)
> 05-09-16 13.12.04.26 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.12.04.27 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.12.04.28 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.12.04.28 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.12.04.28 31524 Beagle DEBUG: Caught ResponseMessageException: Argument is out of range.
> 05-09-16 13.12.04.28 31524 Beagle ERROR: Exception limit exceeded trying to activate a helper.  Giving up on indexing!
> 05-09-16 13.12.04.28 31524 Beagle ERROR: Something terrible happened --- Flush failed


2.) Everytime (!), when filesystem crawling is done:
> 05-09-16 12.41.23.46 29220 Beagle DEBUG: Done crawling!!!!
> 05-09-16 12.41.23.49 29220 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 12.41.23.50 29220 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 12.41.23.50 29220 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 12.41.23.51 29220 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 12.41.23.52 29220 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 12.41.23.52 29220 Beagle ERROR: Exception limit exceeded trying to activate a helper.  Giving up on indexing!
> 05-09-16 12.41.23.52 29220 Beagle ERROR: Something terrible happened --- Flush failed

3.) Certain files (The other titels of this album are indexed without
errors):
> 05-09-16 13.27.19.62 31524 Beagle DEBUG: *** Add '/home/.medien/mugge/Sigur Rós/Ágætis byrjun' 'Sigur Rós - Ágætis byrjun - 06 - Hjartað hamast (bamm bamm bamm).ogg' (file)
> 05-09-16 13.27.19.63 31524 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 13.27.19.66 31524 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 13.27.19.66 31524 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 13.27.19.68 31524 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 13.27.19.69 31524 Beagle DEBUG: Caught ResponseMessageException: Exception has been thrown by the target of an invocation.
> 05-09-16 13.27.19.69 31524 Beagle ERROR: Exception limit exceeded trying to activate a helper.  Giving up on indexing!
> 05-09-16 13.27.19.69 31524 Beagle ERROR: Something terrible happened --- Flush failed

Beagle doesn't index the rest of the content of the directory
'/home/.medien/mugge/Sigur Rós/Ágætis byrjun' anymore. And that is bad. ;(



Maybe one more bug:

best, beagle-query or beagled itself seem to have problems with multiple
tagged mp3. - If there is only a idv1 OR a idv2 tag, the content of this
tag is displayed correctly in best, but if a file has both, best shows
only the filename and - as description: Title 2 of "Unknown Album"

	
I hope, this helps a little.



Finally, I have a question:

as Tomasz Torcz wrote:
>  Beagle already ionice itself (grep for ioprio).
> Unfortunately vanilla kernel doesn't allow  non-root processess to set self
> priority to idle, due some priority-inheritance problems.

That explains what I get from IndexHelper (I am using cfq-scheduler):
> 05-09-16 12.59.49.37 31565 IndexH WARN: Unable to set IO-priority for process to idle


Is there a workaround for this problem?

Thanks in advance,
Bests,

Jan.