Ciao,

as from a previous discussion, we have setup an aliased DNS xrootd redirector,

which is 

-bash-3.2$ host xrootd-cms.infn.it

xrootd-cms.infn.it has address 90.147.66.75

xrootd-cms.infn.it has address 193.205.76.83

I was playing with some crash tests, and I do not get the result.

So: I switched off the redirector 193.205.76.83, while keeping it into the alias, and I issued a 

xrdcp -d 10 root://xrootd-cms.infn.it//store/data/Run2013A/MinimumBias/RECO/PromptReco-v1/000/212/188/00000/6C246B92-C67B-E211-BE02-003048D2BC62.root .

I was assuming that the client would have recognized the alias, and eventually tried a second host if the first was not available.

In the log ( https://www.dropbox.com/s/zmp9uyreqm4qwhg/xrootd.log )

I see eventually the client recognizes the situation:

140415 12:25:11 001 Xrd: ConvertDNSAlias: found host xrootd-redic.pi.infn.it with addr 193.205.76.83

140415 12:25:11 001 Xrd: ConvertDNSAlias: found host xrootd.ba.infn.it with addr 90.147.66.75

140415 12:25:11 001 Xrd: ShowUrls: The converted URLs count is 2

140415 12:25:11 001 Xrd: ShowUrls: URL n.1: root://xrootd-redic.pi.infn.it:1094//store/data/Run2013A/MinimumBias/RECO/PromptReco-v1/000/212/188/00000/6C246B92-C67B-E211-BE02-003048D2BC62.root.

140415 12:25:11 001 Xrd: ShowUrls: URL n.2: root://xrootd.ba.infn.it:1094//store/data/Run2013A/MinimumBias/RECO/PromptReco-v1/000/212/188/00000/6C246B92-C67B-E211-BE02-003048D2BC62.root.

but then 

140415 12:25:46 001 Xrd: Open: Trying to connect to xrootd-redic.pi.infn.it:1094. Connect try 8

140415 12:25:46 001 Xrd: XrdClientConn: Trying to connect to 193.205.76.83:1094

140415 12:25:46 001 Xrd: Connect: Creating a logical connection...

140415 12:25:46 001 Xrd: Connect: Physical connection not found. Creating a new one...

140415 12:25:46 001 Xrd: Connect: Connecting to [xrootd-redic.pi.infn.it:1094]

140415 12:25:46 001 Xrd: ClientSock::TryConnect_low: Trying to connect to xrootd-redic.pi.infn.it(193.205.76.83):1094 Windowsize=0 Timeout=120

140415 12:25:46 001 Xrd: ClientSock::TryConnect_low: Connection toxrootd-redic.pi.infn.it:1094 failed. (-1)

140415 12:25:46 001 Xrd: Connect: can't open connection to [xrootd-redic.pi.infn.it:1094]

140415 12:25:46 001 Xrd: PhyConnection: Disconnecting socket...

140415 12:25:46 001 Xrd: Connect: Connect(xrootd-redic.pi.infn.it, 1094) returned -1

140415 12:25:46 001 Xrd: XrdNetFile: Error creating logical connection to xrootd-redic.pi.infn.it:1094

140415 12:25:46 001 Xrd: Open: Disconnecting.

140415 12:25:46 001 Xrd: Cache: Cache Status --------------------------

140415 12:25:46 001 Xrd: Cache: -------------------------------------- fTotalByteCount = 0

Last server error 10000 ('')

Error accessing path/file for root://xrootd-cms.infn.it//store/data/Run2013A/MinimumBias/RECO/PromptReco-v1/000/212/188/00000/6C246B92-C67B-E211-BE02-003048D2BC62.root

so no attempt is done on the other. What is wrong here? all in all it tries 8 times to connect to the SAME server, and 0 times to the other ...

thanks a lot

tom

--
Tommaso Boccali
INFN Pisa

---

Use REPLY-ALL to reply to list

To unsubscribe from the XROOTD-L list, click the following link:
https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1