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XROOTD-L  October 2005

XROOTD-L October 2005

Subject:

Re: xrdcp with MonALISA monitoring

From:

"Andy Hanushevsky" <[log in to unmask]>

Date:

6 Oct 2005 11:52:16 -0700Thu, 6 Oct 2005 11:52:16 -0700

Content-Type:

text/plain

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Parts/Attachments

text/plain (117 lines)

Hi All,

I think the best (though most labor intensive approach) is to define a 
plug-in architecture that would accomodate any kind of monitoring. Then it's 
just a matter of a config file or even, perhaps, command line option.

Andy

----- Original Message ----- 
From: "Derek Feichtinger" <[log in to unmask]>
To: "Peter Elmer" <[log in to unmask]>
Cc: "Fabrizio Furano" <[log in to unmask]>; "xrootd-list" 
<[log in to unmask]>; "Catalin Cirstoiu" <[log in to unmask]>
Sent: Thursday, October 06, 2005 5:38 AM
Subject: Re: xrdcp with MonALISA monitoring


> Hi, Fabrizio and Peter
>
> You are right. Let's do it like this: We leave this completely out for 
> now.
> I will generate a patch to xrdcp which will be used in the Alice builds.
>
> After talking to Catalin I can see now that the code is not in a state 
> that it
> should be added to the common CVS anyhow (I had suspected a bit, an that's
> why I did not ask for inclusion of the #ifdefs in the present xrdcp). 
> Catalin
> will get in contact with you again whether it is possible to get all the
> information he collects via the client extension also via the server based
> monitoring (added Catalin in CC).
> If it turns out that there is interest in this functionality, we can still
> make it a configure option.
>
> Cheers,
> Derek
>
>
> On Thursday 06 October 2005 13.45, Peter Elmer wrote:
>>   Hi Fabrizio and Derek,
>>
>>   I'm also not fond of the idea of a separate executable as in any case
>> then we are at the mercy of people using the correct one from any given
>> installation of xrootd. It would be somewhat cleaner if people always
>> just used 'xrd', whereever they are, and _if_ the command was linked
>> with MonaLisa monitoring support it uses it. I guess there is then the
>> question of how it knows whether and where to send the information (if 
>> the
>> support is linked). How would that have worked with the 'xrdmoncp' 
>> command?
>>
>>   BTW, I'm still not sure what the _client_ side support for MonALISA
>> gives us that that the server side support would not (e.g. by reusing
>> the existing monitoring and simply allowing it to be redirected to
>> MonaLISA). Could you spell this out for me, Derek?
>>
>>                                    Pete
>>
>> On Thu, Oct 06, 2005 at 01:35:38PM +0200, Fabrizio Furano wrote:
>> > Hi Derek,
>> >
>> >  generally I don't like "special" executable targets. However, I have 
>> > no
>> > objections if the idea is to move to a unique way when those libraries
>> > are available.
>> >
>> >  When I am out from the boring stuff I am on (very soon I hope) I will
>> > start with the developing of some new features. Obviously I'll not
>> > replicate modifications onto different code branches...
>> >
>> > Fabrizio
>> >
>> > On Wed, 2005-10-05 at 16:29 +0200, Derek Feichtinger wrote:
>> > > Ciao, Fabrizio
>> > >
>> > > We are using here a xrdcp with some added code for MonALISA 
>> > > monitoring
>> > > of the clients. It's just the normal client with quite some stuff in
>> > > between #ifdefs and it links against a MonALISA client library
>> > > (libapmoncpp). The library is unluckily snot yet available on the 
>> > > main
>> > > site (no official download page for that version yet. Catalin said he
>> > > will include all the necessary changes in the official MonALISA 
>> > > soon).
>> > >
>> > > For these reasons I would like to include it for now as a separate
>> > > second client called xrdmoncp in the XrdClients directory, that will
>> > > only be built when autotools detect the presence of the libapmoncpp
>> > > library. This way it's easy for users to detect whether a copy 
>> > > command
>> > > with MonALISA monitoring is available.
>> > >
>> > > Is this ok for you?
>> > >
>> > > Any others interested in this monitoring possibility?
>> > >
>> > > Cheers,
>> > > Derek
>>
>> -------------------------------------------------------------------------
>> Peter Elmer     E-mail: [log in to unmask]      Phone: +41 (22) 767-4644
>> Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
>> -------------------------------------------------------------------------
>
> -- 
> Dr. Derek Feichtinger                   Tel:   +41 22 767 10 07
> ARDA project                            email: [log in to unmask]
> CERN 
> http://people.web.psi.ch/feichtinger
> CH-1211 Genčve 23
>
>
> 



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