On 07.02.2022 16:44, Doug Benjamin wrote:
> Hi Adrian,
Hi!
> Actually I would like to do
>
> > xrdcp file:///dev/shm/some_10GiB_random_file.dat root://testserver:1024//dev/null
ooh! i did not used this but i think that for this, your first requirement would be for null path to be within exported
path.. so, either symlink or maybe a bind path within exported path could be your best and only bets
Adrian
> Regards,
> Doug
>
> -----Original Message-----
> From: Adrian Sevcenco <[log in to unmask]>
> Organization: CERN
> Date: Monday, February 7, 2022 at 8:38 AM
> To: Doug Benjamin <[log in to unmask]>, "[log in to unmask]" <[log in to unmask]>
> Subject: Re: directing xrootd server traffic to /dev/null
>
> On 07.02.2022 16:18, Doug Benjamin wrote:
> > Hello,
> Hi!
> You could use something like this (this is an example from my history):
> xrdcp -N -p -P -f -v 9cf8e515-5391-52eb-bf92-794de25160d0.meta4 - > /dev/null
>
> HTH,
> Adrian
>
> > We want determine the transfer speeds of a few xrootd client machines (as data sources). Is there a configuration setting to allow xrootd server to write the file to /dev/null?
> > I have done a trick of creating a symlink in the file system to /dev/null. This is a less than ideal solution. While the initial part of the transfer goes well eventually it slows down significantly.
> > I see the delay comes with this command - 220207 09:17:01 6324 benjamin.230610:[log in to unmask] ofs_close: use=1 fn=/data/xrootd/null
> >
> > Since I will want to stress test the clients. I want to saturate their output using xrdcp (xrdcopy) any suggestions?
> >
> > Regards,
> >
> > Doug Benjamin
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