[mythtv-users] Kernel errors

[Jerry Rubinow]

On Tue, Apr 17, 2012 at 9:51 PM, Keith Pyle <kpyle at austin.rr.com> wrote:

> On 04/16/12 22:54, Jerry Rubinow:
>
>  My mythbackend computer locked up today, the whole computer, not just
>> mythbackend.  Following is the syslog at the time this happened.  It's
>> been
>> rock steady for months, and I haven't made any changes lately.  I rebooted
>> and now it seems to be functioning normally.
>>
>> Any suggestions for what I should do?  Is this a sign of disk errors?
>>
> I initially missed your message among the plethora of opinions on the
> proper use of this list.
>
> I consulted my kernel expert and he suggested you try to examine the
> syslog about 2-3 minutes before the first entry you posted.  It appears
> you're using JFS and it seems that a JFS write by mythbackend was blocked,
> possibly because some other process had a lock on the filesystem.  The
> first message shows that mythbackend had already been blocked for 2
> minutes, so you might find a clue as to the problem 2-3 minutes before this
> message.


Here are the immediately preceding lines to the first mythbackend call
trace:

Apr 16 22:09:53 kenny dhclient: DHCPREQUEST of 192.168.1.3 on eth0 to
192.168.1.1 port 67
Apr 16 22:09:53 kenny dhclient: DHCPACK of 192.168.1.3 from 192.168.1.1
Apr 16 22:09:53 kenny dhclient: bound to 192.168.1.3 -- renewal in 33144
seconds.
Apr 16 22:17:02 kenny CRON[18058]: (root) CMD (   cd / && run-parts
--report /etc/cron.hourly)
Apr 16 22:19:25 kenny nagios: Auto-save of retention data completed
successfully.
Apr 16 22:30:23 kenny kernel: [270720.200044] INFO: task mythbackend:17865
blocked for more than 120 seconds.

A good thought, but no dice.  Note that there is nothing in cron.hourly.

-Jerry
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