Re: Pb Megacam image transfert from CADC

From: Yannick Mellier <mellier_at_iap.fr>
Date: Sun, 25 May 2008 15:19:18 +0200

       Dear John

     To keep you informed: I tried new transfers and got 3 more
interruptions. Only 5 images transferred successfully over 12.

     Cheers

yannick

Ouellette, John wrote:
> My apologies Yannick -- I just reread your message and realized that the
> times you mentioned were exactly during the period of our network
> problems. The download that never completed was likely just not
> terminated correctly by curl. Since your subsequent download using wget
> worked, curl should now work, too. I will however still talk to our
> network admin about the problem.
>
> John
>
> ----- Original Message -----
> From: mellier_at_iap.fr <mellier_at_iap.fr>
> To: Ouellette, John
> Cc: Yannick Mellier <mellier_at_iap.fr>; Data Oversite Group Group
> <dog_at_cfht.hawaii.edu>
> Sent: Sat May 24 13:22:57 2008
> Subject: Re: Pb Megacam image transfert from CADC
>
>
> Dear John
>
> Thank you very much for your email and for looking at
> the problem.
>
> I started a transfer yesterday at about 8:00 pm, Paris local
> time. About 10 files were transferred without problem. All are
> transferred using "curl". At about 9:00 pm yesterday, I curl-ed
> 967615p but it vever finished: about 2/3 were only transferred
> this morning at 7:00 am, though it kept continuing to transfer
> (no interruption over the night). In order to understand what
> could happen I then went to CADC interface and got this image
> interactively, using wget. It worked well
> , but transferred the .gz image (I usually transfer the .fz image). I
> interrupted the wget after about 10 mn this morning since I saw
> thre was no problmen with wget and the .gz image. THis is
> why you saw a "failure" after 5-10 minutes, I guess? In any case, I
> stopped the curl also and gave up. I will try again tomorrow and will
> keep you informed on the transfer.
>
> Cheers and thanks again,
>
> yannick
>
> >
> > Hi Yannick -- There do not seem to be any problems on the CADC end: a
> > few tests show that data is still capable of being transferred from our
> > web servers at >60Mbytes/sec, and I can't see any failures on our
> > storage nodes. According to our logs, there was one file (967615p) that
> > didn't transfer properly to you, but the failure occurred after five or
> > ten minutes, not five hours: there don't seem to be any problem with
> > transferring that file at this time.
> >
> > Could you send me a list of files that you're having problems with?
> > Perhaps I'm not seeing those failures being logged.
> >
> > John Ouellette
> >
> > Yannick Mellier wrote:
> >>
> >> Dear JJ
> >>
> >> Is there any problem at CADC? It takes 5 hours to transfer one
> >> image.fz from CADC to Terapix.
> >>
> >> Cheers
> >>
> >> yannick
> >>
> >
>
>
Received on Sun May 25 2008 - 03:19:26 HST