Re: Pb Megacam image transfert from CADC

From: JJ Kavelaars <jjk_at_hia.nrc.ca>
Date: Sun, 25 May 2008 07:53:40 -0700

Hi Yannick,

To correct the problems we had with our router a few days ago, the
network group in Ottawa has been making some changes. I suggest that
we will not have a highly robust connection until late on Sunday. If
you can wail until then, that would likely be the least frustrating
for you, otherwise you may need to continue to re-try downloads until
they succeed.

JJ

On 25-May-08, at 6:19 AM, Yannick Mellier wrote:

>
> 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 - 04:53:52 HST