[mythtv-users] Recurring, Intermittent Error with Myth where tuners/listings go away ?

Paul paul at paulhurley.co.uk
Tue Dec 7 22:15:57 UTC 2010


On 30/11/10 22:13, Paul wrote:
> Hello.  I'm running mythbuntu 10.10, myth 0..23-fixes and I am getting 
> some random, intermittent issues recently.  Having lost my frontend a 
> while back to a water spill I'm currently mainly using my backend via 
> mythweb and downloading files to my laptop to watch.  My backend also 
> runs email, a wiki and monitoring via cacti.  Every so often it seems 
> that parts of the backend process fall over.
>
> The main symptoms are that the cacti trace for tuners in use goes to 
> zero (i.e the tuners disapear).  at the same time the 'Upcoming 
> recordings'page of mythweb shows no upcoming recordings and I get this 
> error if I try to open the status page of MythWeb;
> <snip>


It's still happening, and I would love some help, or advice on where to 
look.  Here's the latest mythbackend.log file, where it looks like the 
tuners disappeared sometime between 20:40 and 21:00;  Fe rom this I see 
the IOBOUND error which might suggest that the system can't move data 
from the two USB tuners onto the disk (recordings are stored on an 
external USB disk.

2010-12-07 20:36:31.456 TFW, Error: Write() -- IOBOUND begin 
remaining(729) free(0) size(4194304) cnt(1)
2010-12-07 20:36:35.318 TFW, Error: Write() -- IOBOUND end
2010-12-07 20:39:26.531 TFW, Error: Write() -- IOBOUND begin 
remaining(5241) free(0) size(4194304) cnt(1)
2010-12-07 20:40:05.193 ProgramInfo(): Updated pathname '':'' -> 
'3702_20101207182900.mpg'
2010-12-07 20:40:05.241 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:41:02.899 Reschedule requested for id -1.
2010-12-07 20:41:57.329 TFW, Error: Write() -- IOBOUND end
2010-12-07 20:41:57.368 DevRdB(/dev/dvb/adapter0/frontend0) Error: 
Driver buffers overflowed
2010-12-07 20:42:24.959 Scheduled 1326 items in 81.9 = 33.96 match + 
47.95 place
2010-12-07 20:42:25.005 scheduler: Scheduled items: Scheduled 1326 items 
in 81.9 = 33.96 match + 47.95 place
2010-12-07 20:42:27.660 AutoExpire: CalcParams(): Max required Free 
Space: 3.0 GB w/freq: 7 min
2010-12-07 20:42:31.785 TFW, Error: Write() -- IOBOUND begin 
remaining(2421) free(0) size(4194304) cnt(1)
2010-12-07 20:45:05.030 ProgramInfo(): Updated pathname '':'' -> 
'3702_20101207182900.mpg'
2010-12-07 20:45:05.048 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:48:09.402 TFW, Error: Write() -- IOBOUND end
2010-12-07 20:48:09.466 DevRdB(/dev/dvb/adapter0/frontend0) Error: 
Driver buffers overflowed
2010-12-07 20:49:00.473 Reschedule requested for id 0.
2010-12-07 20:49:27.912 AutoExpire: CalcParams(): Max required Free 
Space: 3.0 GB w/freq: 7 min
2010-12-07 20:49:28.364 ProgramInfo(3018_20101126195000.mpg), Error: 
GetPlaybackURL: '3018_20101126195000.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.433 ProgramInfo(26119_20101203094800.mpg), Error: 
GetPlaybackURL: '26119_20101203094800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.494 ProgramInfo(26119_20101205014800.mpg), Error: 
GetPlaybackURL: '26119_20101205014800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.508 ProgramInfo(3005_20101205014800.mpg), Error: 
GetPlaybackURL: '3005_20101205014800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.528 ProgramInfo(26148_20101205014801.mpg), Error: 
GetPlaybackURL: '26148_20101205014801.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.568 ProgramInfo(3018_20101126195000.mpg), Error: 
GetPlaybackURL: '3018_20101126195000.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.737 ProgramInfo(26119_20101203094800.mpg), Error: 
GetPlaybackURL: '26119_20101203094800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.873 ProgramInfo(26119_20101205014800.mpg), Error: 
GetPlaybackURL: '26119_20101205014800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.884 ProgramInfo(3005_20101205014800.mpg), Error: 
GetPlaybackURL: '3005_20101205014800.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.898 ProgramInfo(26148_20101205014801.mpg), Error: 
GetPlaybackURL: '26148_20101205014801.mpg' should be local, but it can 
not be found.
2010-12-07 20:49:28.904 Expiring 1819 MBytes for 11274 @ Mon Nov 22 
12:30:00 2010 => Loose Women
2010-12-07 20:49:28.923 autoexpire: Expiring Program: Expiring 1819 
MBytes for 11274 @ Mon Nov 22 12:30:00 2010 => Loose Women
2010-12-07 20:49:28.937 Expiring 1368 MBytes for 3025 @ Tue Dec 7 
10:00:00 2010 => Top Gear
2010-12-07 20:49:28.940 ProgramInfo(): Updated pathname '':'' -> 
'11274_20101122122000.mpg'
2010-12-07 20:49:28.949 autoexpire: Expiring Program: Expiring 1368 
MBytes for 3025 @ Tue Dec 7 10:00:00 2010 => Top Gear
2010-12-07 20:49:28.992 ProgramInfo(): Updated pathname '':'' -> 
'3025_20101207095000.mpg'
2010-12-07 20:49:29.051 ProgramInfo(): Updated pathname '':'' -> 
'11274_20101122122000.mpg'
2010-12-07 20:49:29.079 ProgramInfo(): Updated pathname '':'' -> 
'3025_20101207095000.mpg'
2010-12-07 20:49:31.996 ProgramInfo(): Updated pathname '':'' -> 
'11274_20101122122000.mpg'
2010-12-07 20:49:37.531 ProgramInfo(): Updated pathname '':'' -> 
'3025_20101207095000.mpg'
2010-12-07 20:50:05.909 ProgramInfo(): Updated pathname '':'' -> 
'3702_20101207182900.mpg'
2010-12-07 20:50:05.926 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:50:13.614 Scheduled 1326 items in 73.0 = 0.03 match + 
72.95 place
2010-12-07 20:50:13.637 scheduler: Scheduled items: Scheduled 1326 items 
in 73.0 = 0.03 match + 72.95 place
2010-12-07 20:50:13.690 Reschedule requested for id 0.
2010-12-07 20:51:02.112 Scheduled 1326 items in 48.3 = 0.01 match + 
48.26 place
2010-12-07 20:51:02.135 scheduler: Scheduled items: Scheduled 1326 items 
in 48.3 = 0.01 match + 48.26 place
2010-12-07 20:51:11.040 TFW, Error: Write() -- IOBOUND begin 
remaining(7873) free(0) size(4194304) cnt(1)
2010-12-07 20:51:16.359 TFW, Error: Write() -- IOBOUND end
2010-12-07 20:51:44.185 TFW, Error: Write() -- IOBOUND begin 
remaining(541) free(0) size(4194304) cnt(1)
2010-12-07 20:54:23.532 TFW, Error: Write() -- IOBOUND end
2010-12-07 20:54:23.553 DevRdB(/dev/dvb/adapter0/frontend0) Error: 
Driver buffers overflowed
2010-12-07 20:54:53.341 TFW, Error: Write() -- IOBOUND begin 
remaining(4677) free(0) size(4194304) cnt(1)
2010-12-07 20:55:43.028 [mpeg2video @ 0x10b4960]ac-tex damaged at 22 19
2010-12-07 20:55:43.038 [mpeg2video @ 0x10b4960]Warning MVs not available
2010-12-07 20:55:45.152 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:55:46.322 ~MythContext waiting for threads to exit.
2010-12-07 20:55:46.343 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:55:47.633 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:55:49.710 mythbackend version: branches/release-0-23-fixes 
[24158] www.mythtv.org
2010-12-07 20:55:49.722 Using runtime prefix = /usr
2010-12-07 20:55:49.730 Using configuration directory = /home/mythtv/.mythtv
2010-12-07 20:55:49.776 Empty LocalHostName.
2010-12-07 20:55:49.788 Using localhost value of pegasus
2010-12-07 20:55:49.842 New DB connection, total: 1
2010-12-07 20:55:49.917 Connected to database 'mythconverg' at host: pegasus
2010-12-07 20:55:49.930 Closing DB connection named 'DBManager0'
2010-12-07 20:55:49.940 Connected to database 'mythconverg' at host: pegasus
2010-12-07 20:55:49.964 Current MythTV Schema Version (DBSchemaVer): 1254
2010-12-07 20:55:49.974 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:57:05.909 Reschedule requested for id -1.
2010-12-07 20:57:30.736 AFD: Opened codec 0x8fcbb20, id(MPEG2VIDEO) 
type(Video)
2010-12-07 20:57:30.750 AFD: codec MP2 has 2 channels
2010-12-07 20:57:30.760 AFD: Opened codec 0x8fd0000, id(MP2) type(Audio)
2010-12-07 20:57:30.767 AFD: codec MP3 has 0 channels
2010-12-07 20:57:30.775 AFD: Opened codec 0x8fd0750, id(MP3) type(Audio)
2010-12-07 20:57:30.870 AFD: Opened codec 0x8fe4480, id(DVB_SUBTITLE) 
type(Subtitle)
2010-12-07 20:57:32.335 AFD: Setting channels to 2
2010-12-07 20:57:32.643 Preview: Grabbed preview 
'/mnt/mythvideo/3001_20101207192300.mpg' 720x576 at 664s
2010-12-07 20:57:33.701 ~MythContext waiting for threads to exit.
2010-12-07 20:57:33.862 commflag: Commercial Flagging Finished: 
EastEnders "4118" recorded from channel 3001 at Tue Dec 7 19:23:00 2010 
(0 commercial break(s))
2010-12-07 20:57:33.929 ProgramInfo(): Updated pathname '':'' -> 
'3001_20101207192300.mpg'
2010-12-07 20:58:22.130 Scheduled 1326 items in 76.1 = 34.05 match + 
42.04 place
2010-12-07 20:58:22.148 scheduler: Scheduled items: Scheduled 1326 items 
in 76.1 = 34.05 match + 42.04 place
2010-12-07 21:00:35.411 TFW, Error: Write() -- IOBOUND end
2010-12-07 21:00:35.437 DevRdB(/dev/dvb/adapter0/frontend0) Error: 
Driver buffers overflowed
2010-12-07 21:01:06.840 TFW, Error: Write() -- IOBOUND begin 
remaining(917) free(0) size(4194304) cnt(1)
2010-12-07 21:03:46.600 TFW, Error: Write() -- IOBOUND end
2010-12-07 21:03:46.616 DevRdB(/dev/dvb/adapter0/frontend0) Error: 
Driver buffers overflowed
2010-12-07 21:04:17.066 TFW, Error: Write() -- IOBOUND begin 
remaining(2609) free(0) size(4194304) cnt(1)
2010-12-07 21:04:51.063 UPnpMedia: BuildMediaMap VIDEO scan starting in 
:/mnt/pegasus/video:


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