Re: scp stalled

Hi Robert:

francesco@tya64:~$ uname -r
3.2.0-4-amd64
francesco@tya64:~$

I do not understand "tunnel". I use classical scp, passwordless (my pub keys at the mainframe):

francesco@tya64:~$ scp -p fpietra0@login.plx.cineca.it:/gpfs/scratch/userexternal/fpietra0/P2f_accelMD_H2O_PLX/*30.dcd /home/francesco/PLX

and "stalling" occurs randomly. I did not try with another box, where jelly is installed. Also, I did not try either from the Linux prompt (actually I us startx, followed by gnome-session. I am having those problems from the gnome terminal). I never had such problems from a French server at the Univ Picardie, but that automatically probalby uses ftp (and it has to be used from the graphical interface).

Thanks

francesco

On Thu, May 22, 2014 at 8:00 AM, Robert Rottscholl <security@rinx.de> wrote:

Hi Francesco,

what kernel version do you use? There is an unfixed (in mainline) kernel bug in the tun device which might cause your problems (see https://bugzilla.kernel.org/show_bug.cgi?id=74051 ). This will only be a problem if you use a tunnel to connect to your server.

Greets

Robert

Am 21.05.2014 21:16, schrieb Francesco Pietra:

Hello:
Since a few days, scp downloading 500MB file from a supercomputer at the
Italian center CINECA results quite often in

francesco@tya64:~/PLX$ scp -p
fpietra0@login.plx.cineca.it:/gpfs/scratch/userexternal/fpietra0/P3f_accelMD_H2O_PLX/*29.dcd
/home/francesco/PLX
npt_accel-29.dcd 3% 13MB 0.0KB/s -
stalled -

No problem with small files.

Check at CINECA resulted in no malfunction. The provider (TELECOM ITALY)
says their adsl if percetly functioning. Actually, the speed, ca
600kb/s, is as expected (don't smile, Italy is at that speed; if you pay
more, you can just hope to download at 1000kb/s, while out is always
impracticably slow).

My question is: can scp, as available from my installation on a wheezy
amd64 box, be responsible?

thanks for advice

francesco pietra

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