Hi Gang,
I could be related to the version of xrdcp you are using. There was an
incompatability introduced in 3.0.3 that would cause outgoing copies to
fail. You can verify this by looking at the xrootd server log and if this
is the case, an error emssage will appear in the log. Anyway, try using a
version of xrdcp from an older release.
Andy
On Fri, 17 Jun 2011, qing wrote:
> Dear Andrew:
>
> Thanks a lot for you help, I have installed xroot on both pcncu1001.cern.ch
> and qing1981.cern.ch., after starting the xrootd service on both machines, I
> can use xrdcp to transfer a file inside the machine:
>
> [pcncu1001] /home/xrootd/xrootd-20100510-1509/etc >
> /opt/xrootd/bin/x86_64_linux_26/xrootd -c xrootd.cf
> [pcncu1001] /home/xrootd/xrootd-20100510-1509/etc > xrdcp /tmp/mytestfile.dat
> root://pcncu1001.cern.ch//xrootd/7.dat
> [xrootd] Total 1.00 MB |====================| 100.00 % [inf MB/s]
>
>
> [localhost] /home/xrootd/xrootd-20100510-1509/etc >
> /opt/xrootd/bin/x86_64_linux_26/xrootd -c xrootd.cf
> [localhost] /home/xrootd/xrootd-20100510-1509 > ./bin/arch/xrdcp
> /tmp/mytestfile.dat root://qing1981.cern.ch//xrootd/7.dat
> [xrootd] Total 1.00 MB |====================| 100.00 % [1048.6 MB/s]
>
> But when I tried to transfer one file between the 2 machines, it failed:
>
> [pcncu1001] /home/xrootd/xrootd-20100510-1509/etc > xrdcp /tmp/mytestfile.dat
> root://qing1981.cern.ch//xrootd/7.dat
> Last server error 10000 ('')
> Error accessing path/file for root://qing1981.cern.ch//xrootd/7.dat
>
> [localhost] /home/xrootd/xrootd-20100510-1509 > ./bin/arch/xrdcp
> /tmp/mytestfile.dat root://pcncu1001.cern.ch//xrootd/8.dat
> Last server error 10000 ('')
> Error accessing path/file for root://pcncu1001.cern.ch//xrootd/8.dat
>
>
> Any idea what's wrong? Here is the content of my xrootd.cf:
>
> [pcncu1001] /home/xrootd/xrootd-20100510-1509/etc > cat xrootd.cf
> if pcncu1001.cern.ch
> xrd.port 1094
> else
> xord.port any
> fi
> xrootd.fslib /opt/xrootd/lib/x86_64_linux_26/libXrdOfs.so
> all.export /xrootd r/w
> if pcncu1001.cern.ch
> all.role manager
> else
> all.role server
> fi
> all.manager pcncu1001.cern.ch:1213
> cms.allow host pcncu1001.cern.ch
> cms.allow host qing1981.cern.ch
>
> Cheers,Gang
>
>
>
>
>> Hi Gang,
>>
>> First, globally change "olb." to "cms." and then see the individual changes
>> you need to make below.
>>
>> How old is that configuration? It seems to be over 4 years old.
>> Things have changed somewhat during that time.
>>
>> Andy
>>
>> P.S. The config file can be further simplified but this will do.
>>
>> On Fri, 17 Jun 2011, qing wrote:
>>
>>> Dear Xrood expert:
>>>
>>> -------------------------------------------------------------------------
>>> xrootd.fslib /opt/root/lib/libXrdOfs.so
>>> xrootd.export /xrootd/
>>> xrd.port 1094
>>> if pcuw101.cern.ch
>>> ofs.redirect remote
>> *****>>>> all.role manager
>>> ofs.forward all
>>> else
>>> ofs.redirect target
>> *****>>>> all.role server
>>> fi
>>> olb.port 3121
>>> if exec olbd
>> *****>>>> if exec cmsd
>>> xrd.sched mint 10 maxt 100 avlt 20
>> *****>>>> We STRONGLY suggest you remove the sched directive as it will
>> cause problems for you!!!!! It is meanty largely for development purposes.
>>> fi
>>> oss.path /xrootd/ r/w
>>> olb.path rw /xrootd/
>> *****>>>> The above two directives can be specified as follows:
>> all.export /xrootd/ r/w
>>> if pcuw101.cern.ch
>>> olb.role manager
>>> else
>>> olb.role server
>>> fi
>>> olb.subscribe pcuw101.cern.ch 3121
>> *****>>>> You no longer need the subscribe directive.
>>> odc.manager pcuw101.cern.ch 3121
>> *****>>>> Change odc to all in the above.
>>
>>> olb.delay startup 30
>>> olb.space 20g 1g
>>> if exec xrootd
>>> xrd.protocol xproofd:1093 /opt/root/lib/libXrdProofd.so
>>> fi
>>> xpd.rootsys /opt/root
>>> xpd.workdir /xrootd/
>>> xpd.intwait 20
>>> xpd.resource static /etc/proof.conf
>>> xpd.role worker
>>> xpd.role master if pcuw101.cern.ch
>>> xpd.allow pcuw101.cern.ch
>>> xpd.poolurl root://pcuw101.cern.ch
>>> xpd.namespace /home/xrootd/proofpool
>>>
>>> -----------------------------------------------------------------------------------------------------------------------
>>>
>>>
>>>
>>> But I was told 'olbd' has been replaced by 'cmsd' since several years,
>>> so how should I modify this configuration file?
>>>
>>>
>>>
>>> Cheers,Gang
>>>
>>>
>>>
>>>> Dear Xrootd-expert:
>>>>
>>>> Do we have an example or manual of installing and configuring xrootd on
>>>> a cluster of 2 machines?
>>>>
>>>> Cheers,Gang
>>>>
>>>>
>>>
>> .
>>
>
