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Re: Bad uptime on lightly loaded server



Check the NFS server
Automount might be trying to restore the nfs share connection and if the
connection is broken you might see automount flipping out.
NFS is a real pain in the butt, you might want to think about moving away
from it.


On 1/28/07 4:07 PM, "Jonathan Dobbie" <email@hidden> wrote:

> We've been having persistent uptime problems with one of our
> servers.  Last uptime was 123 days.
> 
> I think automount crashing caused it:
> Jan 28 10:27:05 academic crashdump[9768]: automount crashedJan 28
> 10:27:05 academic crashdump[9768]: crash report written to: /Library/
> Logs/CrashReporter/automount.crash.log
> Jan 28 10:27:38 academic kernel[0]: nfs server automount -nsl [186]:
> not respondingJan 28 10:27:38 academic KernelEventAgent[35]: tid
> 00000000 received VQ_NOTRESP event (1)
> Jan 28 10:27:38 academic KernelEventAgent[35]: tid 00000000 type
> 'nfs', mounted on '/Network', from 'automount -nsl [186]', not
> responding
> Jan 28 10:27:38 academic KernelEventAgent[35]: tid 00000000 found 1
> filesystem(s) with problem(s)
> 
> 
> Here's the info on the server:
> It's a dual 2.3GHz G5 Xserve with 2GB of ram.  It boots off of a 80Gb
> SW raid one, and storage is a 1.5GB raid5 on an xserve raid.  It
> generally has mounted 2 fw drives for boot backups as well as an NFS*
> mount for storage backup.
> 
> When it crashes, the first thing that we normally hear is that
> students are no longer able to log in because AFP is dead.  Today,
> the first thing that was reported was that user web shares were
> broken.  Apache reported that it did not have search access along its
> path.  (which, it did)
> 
> It was running 10.4.6.  I took this opportunity to update to 10.4.8
> 
> There are 1157 users with home directories on the box.  Normal use
> has about 50.  Peak usage tends to be around 150.  sendmail is run on
> this machine, but only to send error messages, user mail is handled
> on a different box.
> 
> Stock apache is also run, but 12R/s is about the heaviest load that
> it ever sees.
> 
> Automount crashed with the header of:
> **********
> 
> Host Name:      academic
> Date/Time:      2007-01-28 10:27:04.824 -0600
> OS Version:     10.4.6 (Build 8I127)
> Report Version: 4
> 
> Command: automount
> Path:    /usr/sbin/automount
> Parent:  launchd [1]
> 
> Version: ??? (???)
> 
> PID:    186
> Thread: 5
> 
> Exception:  EXC_BAD_ACCESS (0x0001)
> Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000000
> ***********
> Which, to my untrained eye looks like a function that should have
> returned an address returned an error code that wasn't ever checked.
> 
> console had some errors that I should probably look into, but are
> likely a side effect:
> 2007-01-28 14:25:13.745 SyndicationAgent[4924] WARNING:
> BestCalendarDateFromString - can't interpret: 'Sun 28 Jan 2007
> 11:42:46 -800
> 
> AFP shows no errors since September
> 
> Anyone have any ideas as to how we can make this box more stable?  I
> do not like that core daemons will just crash without warning.  For
> one thing, they make me come to work on Sunday.
> 
> 
> *Please, no flames.  It is on a private VLAN.  I may be stupid, but
> I'm not that stupid.  Take your holy wars elsewhere.
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 >Bad uptime on lightly loaded server (From: Jonathan Dobbie <email@hidden>)



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