Discussion:
SSH works well but scp/rsync hangs!!!!
(too old to reply)
Andrej
2010-06-25 04:18:45 UTC
Permalink
  The former (s1.log) is the strace log when transferring 1405B file
and the later (s2.log) is for 1406B
 PS. I can use ssh to login M2 successfully.
  *** In M2
 scp file M1:/dir
 it works well!
 Any ideas?
The file size is suspiciously close to the default MTU .. any "odd" routers
along the way that may not like big packets?



Cheers,
Andrej
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Mingfan Lu
2010-06-25 05:39:19 UTC
Permalink
ifＩchange the mtu of the interface in M2 from 1500 to 1496, all works ...
So strange
Post by Andrej
  The former (s1.log) is the strace log when transferring 1405B file
and the later (s2.log) is for 1406B
 PS. I can use ssh to login M2 successfully.
  *** In M2
 scp file M1:/dir
 it works well!
 Any ideas?
The file size is suspiciously close to the default MTU .. any "odd" routers
along the way that may not like big packets?
Cheers,
Andrej
--
Please don't top post, and don't use HTML e-Mail :}  Make your quotes concise.
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Michael Hallgren
2010-06-25 08:07:08 UTC
Permalink
ifchange the mtu of the interface in M2 from 1500 to 1496, all works ...
So strange
broken pmtud

mh
Post by Andrej
The former (s1.log) is the strace log when transferring 1405B file
and the later (s2.log) is for 1406B
PS. I can use ssh to login M2 successfully.
*** In M2
scp file M1:/dir
it works well!
Any ideas?
The file size is suspiciously close to the default MTU .. any "odd" routers
along the way that may not like big packets?
Cheers,
Andrej
--
Please don't top post, and don't use HTML e-Mail :} Make your quotes concise.
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--
michael hallgren, mh2198-ripe
Mingfan Lu
2010-06-25 08:54:45 UTC
Permalink
How to fix broken the path mtu discovery?
Post by Michael Hallgren
Post by Mingfan Lu
ifＩchange the mtu of the interface in M2 from 1500 to 1496, all works ...
So strange
broken pmtud
mh
Post by Mingfan Lu
Post by Andrej
  The former (s1.log) is the strace log when transferring 1405B file
and the later (s2.log) is for 1406B
 PS. I can use ssh to login M2 successfully.
  *** In M2
 scp file M1:/dir
 it works well!
 Any ideas?
The file size is suspiciously close to the default MTU .. any "odd" routers
along the way that may not like big packets?
Cheers,
Andrej
--
Please don't top post, and don't use HTML e-Mail :}  Make your quotes concise.
http://www.georgedillon.com/web/html_email_is_evil.shtml
--
michael hallgren, mh2198-ripe
Michael Hallgren
2010-06-25 09:09:14 UTC
Permalink
Post by Mingfan Lu
How to fix broken the path mtu discovery?
Our friend (?) Google found this:

http://www.netheaven.com/pmtu.html

mh
Post by Mingfan Lu
Post by Michael Hallgren
ifchange the mtu of the interface in M2 from 1500 to 1496, all works ...
So strange
broken pmtud
mh
Post by Andrej
The former (s1.log) is the strace log when transferring 1405B file
and the later (s2.log) is for 1406B
PS. I can use ssh to login M2 successfully.
*** In M2
scp file M1:/dir
it works well!
Any ideas?
The file size is suspiciously close to the default MTU .. any "odd" routers
along the way that may not like big packets?
Cheers,
Andrej
--
Please don't top post, and don't use HTML e-Mail :} Make your quotes concise.
http://www.georgedillon.com/web/html_email_is_evil.shtml
--
michael hallgren, mh2198-ripe
--
michael hallgren, mh2198-ripe
David Ford
2010-06-25 20:50:02 UTC
Permalink
https://blue-labs.org/howto/mtu-mss.php
Post by Mingfan Lu
How to fix broken the path mtu discovery?
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