hello Ashok,
what is the reason for choosing dcache instead of
xrootd ? (are you involved also in LCG ?)
the latter can also be interfaced with a mass storage system.
cheers,
JY
[log in to unmask] wrote:
> Hi Wilko,
>
> Are you using dcache xrdxp command ? Do you use dcache for storing the
> data ?
>
> At Uvic, we are installing dcache with tape (TSM) to store BaBaR data.
> We can copy the data to tape and access it through xrootd door.
> I am wondering how to keep bookkepping about it ?
>
> Any advise ? Do you know anybody storing BaBar data on dcache and
> accessing throuch xroot door and keeping bookkeeping of it ?
>
> Thanks,
>
> Ashok
>
>
>
>> Hello Fabrizio
>>
>> I will start testing xrootd and xrdcp again (I was gone for a couple of
>> weeks).
>> I will do some larger test with xrdcp as I would like to try using
>> it for the Babar data distribution.
>>
>> Cheers,
>> Wilko
>>
>>
>>
>>
>>
>> On Mon, 18 Jun 2007, Fabrizio Furano wrote:
>>
>>
>>> Hi all,
>>>
>>> it looks like I finished this small dev/bugfix round on XrdClient. Very
>>> few
>>> added features:
>>> - function to clean the cache forcefully
>>> - windowsize agreement between client and server in multistream mode
>>> (i.e.
>>> you only need to set your preferred WAN tcp windowsize on the server
>>> side)
>>> - TestXrdClient_read now has the --check option which does a basic
>>> correctness check on the data it receives.
>>>
>>> For the bugfix part, the most important ones are:
>>> - correct interpretation of error messages coming out as unsolicited
>>> responses to staging requests (needs validation from Andreas)
>>> - correct behavior of the cache with 'nasty' chunk requests
>>> - correct optimization of concurrent connection creations
>>> - mem corruption in creating connections in the connection manager
>>> - mem corruption in purging unused connections in the error recovery
>>> mechanism in the multistream case
>>>
>>> Right now I am finishing the tests, but everything looks fine up to now.
>>> I'd
>>> like to hear from you if you have problems with the latest version.
>>>
>>> BTW xrdcp with the latest code is scoring 6.1MB/s between PD and SLAC,
>>> against the previous 4.5-5MB/s. It would be nice to hear from you if you
>>> confirm this improvement or if it's just in my setup for some strange
>>> reason.
>>>
>>> Fabrizio
>>>
>>>
>
>
>
