[mythtvnz] Pixellation Every ~ 20 minutes

[Steve Hodge]

On Fri, Oct 5, 2012 at 9:52 PM, Stephen Worthington <
stephen_agent at jsw.gen.nz> wrote:

> Yes, that was the problem.  Ext filesystems have a horrible delete
> process that practically locks up the drive until it completes.  It is
> only usually a problem with larger files, but that includes almost all
> video/recording files.  It also happens when a large log file is
> deleted, which happens from cron jobs.  There is no workaround - you
> have to use a different filesystem.
>

There is a workaround and the slow deletes option is it. Instead of
deleting a recording in a single operation it progressively truncates the
recording to smaller and smaller sizes before finally deleting it. This
avoids the issue as fewer file blocks are unlinked in each operation.


> If there are multiple deletions
> coming from MythTV, there is an option somewhere for "slow deletes" or
> something like that, which I think prevents back-to-back deletes from
> making the problem even worse.


No, it's got nothing to do with multiple deletes.

Deletes don't seem to be the problem here though.

Cheers,
Steve
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ourshack.com/pipermail/mythtvnz/attachments/20121005/cbc21b40/attachment.html>