i386/125592: [hang] FreeBSD 7 server in hang

[Remko Lodder]

Chris wrote:
> The following reply was made to PR i386/125592; it has been noted by GNATS.
> 
> From: Chris <chris at cretaforce.gr>
> To: bug-followup at FreeBSD.org, gpbuono at gmail.com
> Cc:  
> Subject: Re: i386/125592: [hang] FreeBSD 7 server in hang
> Date: Sun, 14 Sep 2008 01:00:42 +0300
> 
>  I have exactly the same problem with 3 different servers running
>  7.0-RELEASE-p4 (problem happen with p3 too).
>  
>  They start randomly hang during the last days.
>  
>  SSH, FTP, WEB, etc don't respond but ICMP responds.
>  
>  The servers come back only after a hard reboot.

Hello,

I appeared to have something similiar. With me it was recreateable the 
moment I had /usr/obj on a ZFS pool, when I started building a new tree, 
the machine became unreachable, generating high loads locally and didn't
respond to anything but ICMP. Every odd minutes (dunno what it was 
exactly) some services responded for a little and then starved again.

I was unable to properly recognize what was going on, the network card
wedged a couple of times etc. After building a new -STABLE (which took
a little time because of the hangs) things appeared to be resolved...

Are you usin ZFS as well? Can you logon locally to the machine and see 
high uptimes and high iowaits for example? Can you share a verbose boot 
and pciconf -vl to see what hardware you have (which might potentially 
have this): can you perhaps trigger the issue so that it's insightful
what created this?

Thanks!
remko

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