[mythtv-users] Sudden massive problems
mythtv at rodsbooks.com
Sun Feb 4 01:50:00 UTC 2007
I put together my MythTV box a bit over a week ago, based on Ubuntu 6.10 and
its provided MythTV 0.20 packages. I've been slowly getting things working,
but I'm starting to have problems accessing my recordings. Certain
recordings, when played, result in the frontend and/or backend crashing. One
or two even cause such crashes when I put the cursor over them in the
recordings list (presumably because of the generated static preview). I
suspect MySQL problems, or perhaps file/filesystem corruption (I'm using XFS
for the recordings filesystem), or maybe corrupt binaries somewhere. I've
deleted most of the "problem" recordings, and several others that I'd been
keeping around for testing purposes. I've also tried backing up a couple of
recordings that still play OK to DVD, using the native archive format, but
all I get is this error message:
: It was not possible to create the DVD. An error occured [sic] when
: running the scripts.
There are no clues in the MythArchive log files because there are no
MythArchive log files.
I've tried running a command mentioned in the MythTV documentation to fix
suspected MySQL problems:
mysqlcheck -r -umythtv -p<password> mythconverg
This produced a string of "OK" responses but no improvements.
After starting mythfrontend and inducing a failure, the last message to be
displayed is often:
VideoOutputXv: SvMCTex: Init failed
A Web search suggests this is harmless. There's nothing at all suspicious in
the /var/log/mythtv/mythbackend.log file; the last message after a crash is
usually something to the effect that the frontend box (which is the same as
the backend box) has been added as a client.
I'd previously installed a package to access MySQL via a Web browser
(phpmyadmin). Accessing it this way usually results in a complete system
hang. The disk activity light flickers constantly and the system is
unresponsive. The only way out seems to be to hit the computer's reset
So, with all that out of the way, my question is: What can I do to recover my
system? I'm willing to lose most of my custom settings, if that's necessary,
but I do want to keep a couple of existing recordings (hence my failed
attempt to back them up to DVD as native archives). Unfortunately, I hadn't
yet gotten around to researching MySQL backups, although it was on my list
for the near future. Is there some way to copy the recordings from the .nuv
files over to the MythVideo area without losing quality? (I don't mind losing
description data, if that's what it takes.) I'm afraid I know next to nothing
about MySQL, or for that matter precisely what MythTV stores in MySQL.
Thanks for any help.
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