From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Fw: [Bug 18822] New: TCP Communications gets blocked, then resetted Date: Mon, 20 Sep 2010 09:04:51 -0700 Message-ID: <20100920090451.4ef28f91@nehalam> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:41740 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752275Ab0ITQFE (ORCPT ); Mon, 20 Sep 2010 12:05:04 -0400 Received: from nehalam (pool-74-107-135-205.ptldor.fios.verizon.net [74.107.135.205]) (authenticated bits=0) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id o8KG4vYC022382 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 20 Sep 2010 09:05:02 -0700 Sender: netdev-owner@vger.kernel.org List-ID: Begin forwarded message: Date: Mon, 20 Sep 2010 10:39:47 GMT From: bugzilla-daemon@bugzilla.kernel.org To: shemminger@linux-foundation.org Subject: [Bug 18822] New: TCP Communications gets blocked, then resetted https://bugzilla.kernel.org/show_bug.cgi?id=18822 Summary: TCP Communications gets blocked, then resetted Product: Networking Version: 2.5 Kernel Version: 2.6.32-24-generic #43-Ubuntu Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: IPV4 AssignedTo: shemminger@linux-foundation.org ReportedBy: dc6iq@gmx.de Regression: No Created an attachment (id=30682) --> (https://bugzilla.kernel.org/attachment.cgi?id=30682) both machine dumps having a freshly installed bacula server i could never get a backup from my working machine done to the bacula server. The Connection transmits approximately 3 GiB, then locks up and resets the connection. Transmission gets stuck at a certain point, then the bacula server does not reply to retransmitted packets on IPV4 stack. Retry Count on disks machine (my working machine) raises up to 13, then the Connection is gone. bacula server tries to send a Push packet (after KeepAlive timer runs out), and get the final RST packet from disks, because the connection is gone. In the Attachment you will find the tcpdumps from both machines, actually the sending machine dropped some packets in the dump. It might be a possible help: disks is running an 64 bit kernel whereas bacula is running 32 bit. I haven't looked into the option bits very well but it looks like there is a problem hidden: last ack being ok: 09:32:56.142876 IP bacula.elkenet.bacula-sd > disks.elkenet.50766: Flags [.], ack 2005754588, win 9582, options [nop,nop,TS val 21825875 ecr 4530083], length 0 next ack packet: 09:32:56.144763 IP bacula.elkenet.bacula-sd > disks.elkenet.50766: Flags [.], ack 2005773412, win 9308, options [nop,nop,TS val 21825876 ecr 4530083,nop,nop,sack 1 {2005774860:2005776308}], length 0 root@disks:~# uname -a Linux disks 2.6.32-24-generic #43-Ubuntu SMP Thu Sep 16 14:58:24 UTC 2010 x86_64 GNU/Linux root@bacula:~# uname -a Linux bacula 2.6.32-24-generic-pae #43-Ubuntu SMP Thu Sep 16 15:30:27 UTC 2010 i686 GNU/Linux Doing a 20GB backup on a debian server works fine server:~# uname -a Linux server 2.6.32-5-486 #1 Sat Sep 18 01:43:00 UTC 2010 i686 GNU/Linux Doing a 26 GB backup from a 32 bit Ubuntu works fine as well. Maybe its a 64 bit issue... root@elke:~# uname -a Linux elke 2.6.32-24-generic #43-Ubuntu SMP Thu Sep 16 14:17:33 UTC 2010 i686 GNU/Linux If any further input is required, just let me know... -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. --