[mythtv-users] Frontend hangs and loses conneciton to backend

James Purl forsgump at gmail.com
Fri Oct 22 21:50:18 UTC 2004

Yes! I have an LVM2 partition on my main mythbox of 495GB (yes, thats
~1/2 TB), and almost like clockwork when it hits 91% full, the IOBOUND
errors.  I am using reiserfs and according to their site, once
partitions start getting close to full, performance can suffer.  On an
LVM2 partition of that size, the "suffering" is magnified to the point
that my system grinds to a halt virtually.  I witnessed the same
problem simply cp'ing a file to the same partition when it was 91%
full, which confirmed that MythTV was simply a victim of the system.
According to namesys, all filesystems suffer to some extent, so that
could be what you're seeing.

P.S. The reason my 495GB partition even got that full is I turned
MythTV loose on the Olympics with "Record when this program is on
anywhere" and it recorded EVERYTHING--basically filling all 4 of my
backends.  Doesn't take too many 4 hour HD sessions at 9 GB/hr to fill
that drive!  I keep holding onto those shows thinking I might watch it
some time before '08 :).

On Thu, 21 Oct 2004 12:52:22 -0500, Buchanan, Paul (West)
<paul.buchanan at thomson.com> wrote:
> On Thursday, October 21, 2004 12:38 PM, mythtv-users-bounces at mythtv.org
> wrote:
> >
> >
> > On Thu, 21 Oct 2004 13:21:01 -0400, Thatcher Ulrich <tu at tulrich.com>
> > wrote:
> >> On Oct 20, 2004 at 07:17 -0400, Jon Kunze wrote:
> >>
> >>
> >>> This problem just started recently, and possibly started after I
> >>> upgraded to the ivtv 107zz drivers.
> >>>
> >>> It seems that after my myth box has been up and running for a few
> >>> hours, and I try to delete a recording after i'm finished watching,
> >>> the frontend hangs for about 30 secones after I select the delete
> >>> confirmation. About 30 seconds later, the message comes up that the
> >>> front end has lost contact with the back end. The only thing I've
> >>> found to remedy this problem, is to reboot the system. This has made
> >>> using myth quitte troublesome. Can anyone guide me inthe right
> >>> direction to find out what is causing this problem? Is there a log
> >>> file that will help? Any help would be greatly appreciated. I have
> >>> also noticed that the system sometimes locks up when I go to the
> >>> status page in mythweb.
> >>>
> >>> The system I'm using is a frontend/backend combo with 2 pvr-250s
> >>> installed running Fedora Core 2, from Jarod's guide.
> >>
> >> Also check your free disk space.  I saw something like this recently
> >> and it turned out my disk was full.  I had to delete some video
> >> files manually.
> >>
> >> --
> >> Thatcher Ulrich
> >> http://tulrich.com
> >>
> >>
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> > I'm currently sitting about about 87g/140g so I know it's not that. I
> > dont think it's ever gone over 100g. I may just break down and wipe it
> > clean and try a fresh install.
> Top posting re-arranged
> I am having the same issue.  My system was humming along quite nicely for a few weeks, then the backend started hanging after recordings finsished, and or after commerial flagging.  The frontend will loose its connection when trying to delete, look at upcomming recordings, etc.  I have suspected a disk space issue, but I have around 5 gig free at all times (i think).  I will try freeing up some more to see if thats it though.
> The only thing I am seeing in logs is
> IOBound Blocking in Thread::Write() (or close to that at least)
> Which I suppose could be caused by a full disk...  Are there others out there that are seeing this behavior?
> Paul
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