[ClusterLabs] Antw: Re: Regression in Filesystem RA

[Ulrich Windl]

> Hello,
> 
> sorry for the late reply, moving Date Centers tends to keep one busy.
> 
> I looked at the PR and while it works and certainly is an improvement, it
> wouldn't help me in my case much.
> Biggest issue being fuser and its exponential slowdown and the RA still
> uses this.
> 
> What I did was to recklessly force my crap code into a script:
> ---
> #/bin/bash
> lsof -n |grep $1 |grep DIR| awk '{print $2}'
> ---

Hi!

I'm not an lsof specialist, but maybe add more options to lsof, and you can
get rid of the graps and awk, maybe. I mean: lsof examines everything, and you
pick what you need. Maybe just let lsof output wha you need.

> 
> And call that instead of fuser as well as removing all kill logging by
> default (determining the number pids isn't free either). 
> 
> With that in place it can deal with 10k processes to kill in less than 10
> seconds.
> 
> Regards,
> 
> Christian
> 
> On Tue, 24 Oct 2017 09:07:50 +0200 Dejan Muhamedagic wrote:
> 
>> On Tue, Oct 24, 2017 at 08:59:17AM +0200, Dejan Muhamedagic wrote:
>> > [...]
>> > I just made a pull request:
>> > 
>> > https://github.com/ClusterLabs/resource-agents/pull/1042  
>> 
>> NB: It is completely untested!
>> 
>> > It would be great if you could test it!
>> > 
>> > Cheers,
>> > 
>> > Dejan
>> >   
>> > > Regards,
>> > > 
>> > > Christian
>> > >   
>> > > > > Maybe we can even come up with a way
>> > > > > to both "pretty print" and kill fast?    
>> > > > 
>> > > > My best guess right now is no ;-) But we could log nicely for the
>> > > > usual case of a small number of stray processes ... maybe
>> > > > something like this:
>> > > > 
>> > > > 	i=""
>> > > > 	get_pids | tr '\n' ' ' | fold -s |
>> > > > 	while read procs; do
>> > > > 		if [ -z "$i" ]; then
>> > > > 			killnlog $procs
>> > > > 			i="nolog"
>> > > > 		else
>> > > > 			justkill $procs
>> > > > 		fi
>> > > > 	done
>> > > > 
>> > > > Cheers,
>> > > > 
>> > > > Dejan
>> > > >   
>> > > > > -- 
>> > > > > : Lars Ellenberg
>> > > > > : LINBIT | Keeping the Digital World Running
>> > > > > : DRBD -- Heartbeat -- Corosync -- Pacemaker
>> > > > > : R&D, Integration, Ops, Consulting, Support
>> > > > > 
>> > > > > DRBD® and LINBIT® are registered trademarks of LINBIT
>> > > > > 
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>> > > 
>> > > -- 
>> > > Christian Balzer        Network/Systems Engineer                
>> > > chibi at gol.com   	Rakuten Communications  
>> > 
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> 
> 
> -- 
> Christian Balzer        Network/Systems Engineer                
> chibi at gol.com   	Rakuten Communications
> 
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