[mythtv-users] Moved to Intel NUC - no sound & IR receiver needed

[Ian Evans]

On Sun, Mar 22, 2020, 11:47 AM Stephen Worthington, <
stephen_agent at jsw.gen.nz> wrote:

> On Sun, 22 Mar 2020 13:00:09 +0000, you wrote:
>
> {snip}
>
> You want to only move recordings when the backend is not in use for
> playback, and to not move any recordings which are currently still
> recording or being used for commercial skip processing.  A crude way
> to do that is to just schedule the move job for say the early hours of
> the morning, and check that you have enough time between then and the
> next recording time.  You can get the next recording time using the
> Services API.  But if someone has paused the playback of a recording
> that is on the SSD, you could still get into trouble that way as I
> believe paused playback keeps the recording file open.  So a better
> way to handle this is to also check the contents of the inuseprograms
> database table.  If it is not empty, do not move any file listed in
> it.  There is still a potential problem even then, as there seems to
> be a bug (in v30 anyway) where the DBCleanup job that is run
> automatically at some random time each day cleans up the inuseprograms
> table and manages to delete all the entries, even ones that are
> current.  It is only supposed to clean up old stale entries, and its
> code that I glanced at should only do that, but it actually always
> seems to delete all entries on my system.  Then as the jobs update
> their inuseprograms table entries, the entries re-appear over several
> minutes.  If your file moving script takes into account the
> inuseprograms, then it potentially could be run safely at any time. It
> would want to only copy the files and re-check inuseprograms before
> deleting the source file in case something has started using the file
> while the copying was happening.  And the destination file should have
> a different name from the source file until the source file has been
> deleted so that MythTV does not see two copies of the same file while
> the move is in progress.
>
> I have some Python code ("mythsgu") that moves MythTV recordings,
> which has all this sort of thing in it.  It aborts any move that is
> under way whenever it thinks mythbackend is becoming busy, rather than
> just avoiding files listed in inuseprograms.  Let me know if you would
> like a copy.
> {snip}


I'd love to see that script.

>
>
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