[mythtv] FW: Ticket #10541: SIGSEGV when EIT updating DB and channel change

Daniel Kristjansson danielk at cuymedia.net
Sun Apr 15 20:34:12 UTC 2012


On Sun, 2012-04-15 at 20:21 +0200, Angela wrote:

> This is MAGIC, wrote 2180 EIT messages within one second, 350 EIT messages
> also in one second and 4000 EIT messages within 2 seconds.
> 
> I always use InnoDB, having nobarrier should be save for MySQL I think, in
> case electricity fails. Losing parts of a recording does not matter. Any
> other thoughts ?

You can lose data consistency with nobarrier on power loss, especially
with ext4. As I understand it you will mostly lose data on expanding
files, so database files are fairly safe. However, MythTV should work
with barriers enabled, I just want to see if your lockups go away after
a week running this way. If that is the case I know to look at how we
handle the DB in EIT scanning vs looking for the problem elsewhere.

-- Daniel



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