asterisk users - Aug 2019 - Anyone ever experienced a crash where Asterisk debug output a line with all nulls

> Did I get it correctly: the last line in the log before asterisk starts
again after the reboot is the [nul]-line? If so, are you probably using ext4 or
maybe reiserfs? I know of this problem if the machine crashes, open files can
end up like described. AFAIK it's a file system bug!
Yes, the last line in in the log before asterisk starts again after the reboot
is the [nul]-line.

I believe you are right about the system using ext4 and the [nul]-line  problem
> Maybe because the machine is performing a file system check on some other
partitions in parallel and it's slowed down therefore?
Wouldn't /var/log/syslog show something like this if it's happening in
parallel?
syslog has items before asterisk is starting, but once the Asterisk log files
show it's starting to completed, /var/log/syslog has nothing.
Syslog has nothing for about 10 minutes after that.

The strange thing is the customer did a manual restart of Ubuntu 20 minutes
later and the same slow startup time happened.

On 14.08.19 at 18:12 Dan Cropp wrote:
> 
>> Maybe because the machine is performing a file system check on some
other partitions in parallel and it's slowed down therefore?
> 
> Wouldn't /var/log/syslog show something like this if it's happening
in parallel?
Well, it was just speculation. Is it even now reproducible after the 3. or even
later reboot? I would try to log in via ssh as fast as possible
(or directly via a shell) and try to find the responsible process. Try to
examine the IO.
> syslog has items before asterisk is starting, but once the Asterisk log
files show it's starting to completed, /var/log/syslog has nothing.
> Syslog has nothing for about 10 minutes after that.
> 
> The strange thing is the customer did a manual restart of Ubuntu 20 minutes
later and the same slow startup time happened.
If the machine is shut down manually, did it perform a correct shutdown (= all
file systems have been correctly unmounted and all processes have
been stopped before unmounting)?

Is the startup slow even if it's done w/o reboot before?


Regards
Michael

I have been told they went to an earlier snapshot of the VM and are running on
that one now so we no longer have access to the VM from the state it was in.

The startup on their old snapshot VM is taking about 2 seconds for asterisk to
load the configuration files.

Someone finally admitted to me the VM that crashed was missing over 200 package
updates.  At this point, that's what we are chalking it up to.

Have a great day!

Dan

-----Original Message-----
From: asterisk-users <asterisk-users-bounces at lists.digium.com> On
Behalf Of Michael Maier
Sent: Wednesday, August 14, 2019 1:46 PM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] Anyone ever experienced a crash where Asterisk
debug output a line with all nulls

On 14.08.19 at 18:12 Dan Cropp wrote:
> 
>> Maybe because the machine is performing a file system check on some
other partitions in parallel and it's slowed down therefore?
> 
> Wouldn't /var/log/syslog show something like this if it's happening
in parallel?
Well, it was just speculation. Is it even now reproducible after the 3. or even
later reboot? I would try to log in via ssh as fast as possible (or directly via
a shell) and try to find the responsible process. Try to examine the IO.
> syslog has items before asterisk is starting, but once the Asterisk log
files show it's starting to completed, /var/log/syslog has nothing.
> Syslog has nothing for about 10 minutes after that.
> 
> The strange thing is the customer did a manual restart of Ubuntu 20 minutes
later and the same slow startup time happened.
If the machine is shut down manually, did it perform a correct shutdown (= all
file systems have been correctly unmounted and all processes have been stopped
before unmounting)?

Is the startup slow even if it's done w/o reboot before?


Regards
Michael

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