[LARTC] modified wondershaper script causes hardlock in server

[LARTC] modified wondershaper script causes hardlock in server

[Morten Nilsen]

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Hi, I've modified my copy of the wondershaper script to add a few
filters that allow traffic to and from a few specific ips go through
with a speed of up to 100Mbits...

I increased the root from 10 to 100mbit, and added this bit of code a
bit further down the script;

# Real time hosts
for i in 62.101.244.63/32 216.74.158.11/32 216.74.158.3/32
216.74.158.57/32; do
  tc filter add dev $DEV parent 1:0 protocol ip prio 1 u32 match ip src
$i flowid 1:0
  tc filter add dev $DEV parent 1:0 protocol ip prio 1 u32 match ip dst
$i flowid 1:0
done

but after using this modified script, the server would at random
intervals cease to function, not answering ping, not showing anything in
the console. No pertinent log entries were made at the time either.

Am I doing something stupid with this?
-- 
Morten

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Re: [LARTC] modified wondershaper script causes hardlock in server

[Damion de Soto]

Hi Morten,
> but after using this modified script, the server would at random
> intervals cease to function, not answering ping, not showing anything in
> the console. No pertinent log entries were made at the time either.
You mean the console would be locked up and not responding ?
Or did you mean you just couldn't find any network errors/logs on the console ?

If it's locked up completely without a kernel panic or any other kind of error 
logged, I would tend to suspect a hardware problem.

Regards,

-- 
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Re: [LARTC] modified wondershaper script causes hardlock in server

[Morten Nilsen]

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Damion de Soto wrote:
> Hi Morten,
>> but after using this modified script, the server would at random
>> intervals cease to function, not answering ping, not showing anything in
>> the console. No pertinent log entries were made at the time either.
> You mean the console would be locked up and not responding ?
> Or did you mean you just couldn't find any network errors/logs on the console ?
> 
> If it's locked up completely without a kernel panic or any other kind of error 
> logged, I would tend to suspect a hardware problem.

complete hardlock

I did suspect hardware too, but when I moved the harddrive to another
box, the problem followed over..

I did move the two rtl8139 adapters too, and after a couple hardlocks,
removed one of them and used the integrated controller instead. That
seemed to fix it, but the next day it started locking all over again.

If I don't use wondershaper, the system is 100% stable.

Cheers,
-- 
Morten

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