Your message dated Sat, 8 Jun 2013 12:15:57 +0200
with message-id <20130608101556.GC4796@pisco.westfalen.local>
and subject line Closing
has caused the Debian Bug report #590935,
regarding NFS client cannot access a share when the TCP connection status is
TIME_WAIT
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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immediately.)
--
590935: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=590935
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: nfs-common
Version: 1:1.1.2-6lenny2
After 5 minutes of inactivity of an nfs share, the status of the TCP connection
between the client port (779 in the transcript below) and the NFS server port
(2049) switches from "ESTABLISHED" to "TIME_WAIT" which is totally normal.
Then, according to the default timeout value for the TIME_WAIT state, the
connection remains in this state for one minute (60 seconds, which is twice the
value of the MSL). If during this minute, another attempt to access the same
NFS share is performed, an Input/output error is generated. After a minute the
connection occurs normally with the same client port number (779 in the
transcript below). Below is a transcript:
########BEGINNING OF TRANSCRIPT ###############
# netstat -na | grep 10.0.0.1 ; date
Fri Jul 30 10:22:18 CEST 2010
# mount -t nfs
10.0.0.1:/export/test on /share/test type nfs
(rw,intr,rsize=8192,wsize=8192,addr=10.0.0.1)
# netstat -na | grep 10.0.0.1
# date; time ls /share/test/ ; date
Fri Jul 30 10:22:55 CEST 2010
testfile
real 0m0.003s
user 0m0.000s
sys 0m0.000s
Fri Jul 30 10:22:55 CEST 2010
# netstat -na | grep 10.0.0.1 ; date
tcp 0 0 10.0.0.2:779 10.0.0.1:2049 ESTABLISHED
Fri Jul 30 10:23:58 CEST 2010
# netstat -na | grep 10.0.0.1 ; date
tcp 0 0 10.0.0.2:779 10.0.0.1:2049 TIME_WAIT
Fri Jul 30 10:28:08 CEST 2010
# date; time ls /share/test/ ; date
Fri Jul 30 10:28:16 CEST 2010
ls: cannot access /share/test/: Input/output error
real 0m0.186s
user 0m0.000s
sys 0m0.056s
Fri Jul 30 10:28:16 CEST 2010
# netstat -na | grep 10.0.0.1 ; date
tcp 0 0 10.0.0.2:779 10.0.0.1:2049 TIME_WAIT
Fri Jul 30 10:28:23 CEST 2010
# netstat -na | grep 10.0.0.1 ; date
Fri Jul 30 10:29:15 CEST 2010
# date; time ls /share/test/ ; date
Fri Jul 30 10:29:19 CEST 2010
testfile
real 0m0.003s
user 0m0.000s
sys 0m0.000s
Fri Jul 30 10:29:19 CEST 2010
# netstat -na | grep 10.0.0.1 ; date
tcp 0 0 10.0.0.2:779 10.0.0.1:2049 ESTABLISHED
Fri Jul 30 10:29:22 CEST 2010
#
############END OF TRANSCRIPT ###############
I am using Debian Lenny 2.6.26-2-amd64 #1 SMP Sun Jun 20 20:16:30 UTC 2010
x86_64 GNU/Linux.
It should be noted that on other system/version (Last updates of Redhat 5.5,
Ubuntu 10.04, Debian Squeeze/Sid), the behavior is slightly different: When the
connection is reinstated during the "TIME_WAIT minute", another port number
(the client port number minus one) is used and the NFS share can be accessed
without error.
Sincerely,
Jean-Francois C. Weber
Linux System Engineer
Phone: +33 1 70 44 04 17
jeanfrancois.we...@sfr.com
6 rue Nieuport
78140 Velizy-Villacoublay, France
www.sfrbusinessteam.fr
--- End Message ---
--- Begin Message ---
Hi,
your bug has been filed against the "linux-2.6" source package and was filed for
a kernel older than the recently released Debian 7.0 / Wheezy with a severity
less than important.
We don't have the ressources to reproduce the complete backlog of all older
kernel
bugs, so we're closing this bug for now. If you can reproduce the bug with
Debian Wheezy
or a more recent kernel from testing or unstable, please reopen the bug by
sending
a mail to cont...@bugs.debian.org with the following three commands included in
the
mail:
reopen BUGNUMBER
reassign BUGNUMBER src:linux
thanks
Cheers,
Moritz
--- End Message ---