Hi Michal,
Is this a change in the client only? and is it after 4.9.1 was releases? I am using 4.9.1 client and a server (4.9.0rc5?) and I can see that the client opens file with both source and destination?
I am just curious. I think the change is good but not sure when should I expect to see it.
regards,
--
Wei Yang |
[log in to unmask] | 650-926-3338
________________________________________
From:
[log in to unmask] <
[log in to unmask]> on behalf of Michal Kamil Simon <
[log in to unmask]>
Sent: Thursday, May 9, 2019 7:59 AM
To:
[log in to unmask]; xrootd-dev
Cc: Dmitry Litvintsev
Subject: RE: delegation and the tpc.key
Hi Albert,
That's correct, in case of third-party-copy with delegation we optimized away
opening of the source and setting up the rendex-vous as the destination is now
able to proceed on its own.
Cheers,
Michal
________________________________
From:
[log in to unmask] [
[log in to unmask]] on behalf of Albert Rossi [
[log in to unmask]]
Sent: 09 May 2019 16:11
To: xrootd-dev
Cc: Dmitry Litvintsev
Subject: delegation and the tpc.key
Hi everyone,
I have noticed something interesting about the behavior of the xrootd server/client on TPC with 4.9. I had not noticed this before because I had not looked at verbose debug output, since everything seemed to be working.
What I notice is the following:
1. Where before the client (xrdcp) used to do an open on the source again during the copy phase, I no longer see this occurring.
2. At the same time, the destination server (i.e., the server-side xrdcp client) does not pass the tpc.key to the source server on open. I noticed this because my own logging was reporting "not a tpc open" at that point.
Everything is working fine, but I just wanted to make sure what I am seeing is correct. Am I correct in concluding that if delegation has occurred, the xrootd server stops using the tpc token?
Thanks, Al
________________________________________________
Albert L. Rossi
Application Developer & Systems Analyst III
Scientific Computing Division, Data Movement Development
FCC 229A
Mail Station 369 (FCC 2W)
Fermi National Accelerator Laboratory
Batavia, IL 60510
(630) 840-3023
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