Also because the problem is maybe related to SYN, maybe trying turning off flow-director/ATR by doing something like:
ethtool -K ethx ntuple on -----Original Message----- From: Steffen Weber [mailto:steffen.we...@gmail.com] Sent: Tuesday, December 08, 2015 12:12 PM To: Skidmore, Donald C <donald.c.skidm...@intel.com>; e1000-devel@lists.sourceforge.net Subject: Re: [E1000-devel] ixgbe and using iptables/SYNPROXY causes random system resets Hi Don, thank you for the reply. We've been using the X520 NICs since February 2015 and so far they have been working fine. A few weeks ago we enabled SYNPROXY and the reboots started to happen. So, only judging from our own experience, this looks more like a SYNPROXY problem than an X520/ixgbe problem. But the author of the thread I'm replying to has described exactly the same issue that we are seeing with the combination of X520 NICs and SYNPROXY (sudden reboots) and he was only able to reproduce the issue with X520 NICs but not with other NICs. That's the (only) reason why I'm assuming that the X520 hardware/firmware or the ixgbe driver may have something to with the problem. Our system BIOS is up-to-date (version 2.4.2), as is the Lifecycle Controller firmware (version 2.21.21.21). We are not using any out-of-tree drivers, just pure Linux 4.1.13. http://www.dell.com/support/home/us/en/04/product-support/product/poweredge-r420/drivers Is the "latest SourceForge driver" part of Linux 4.2 or 4.3? I have more routine in switching kernels than in installing out-of-tree drivers. I agree that just rebooting is a rather strange symptom of a bug. I'll let you know whether upgrading the firmware and/or disabling GRO/LRO helps (in the coming days / weeks). Thanks, Steffen On 08.12.2015 19:53, Skidmore, Donald C wrote: > Hey Steffen, > > Sorry to hear about your system reset problem. Since you're not seeing > anything in the system logs is you thinking that the NIC's are involved due > to the frequency of the failures seems to correspond to amount of system > traffic? I'm asking as in my 7 years of maintaining the ixgbe driver this > failure state is new to me. You could try loading the latest Source Forge > driver verify this still fails with a slightly more recent driver, but really > there shouldn't be much in the way for differences and nothing I would expect > to correct this sort of failure. It almost sounds like a power issue, the > way the system resets without even logging the problem, is your system BOIS > up to date? > > I know this isn't much in the way of help, but you have me at a bit of a loss > on how the NIC could lead to this sort of immediate system reset. > > Thanks, > -Don Skidmore <donald.c.skidm...@intel.com> > >> -----Original Message----- >> From: Steffen Weber [mailto:steffen.we...@gmail.com] >> Sent: Tuesday, December 08, 2015 5:03 AM >> To: e1000-devel@lists.sourceforge.net >> Subject: Re: [E1000-devel] ixgbe and using iptables/SYNPROXY causes >> random system resets >> >> Hi, >> >> we have exactly the same problem with the combination of SYNPROXY and >> X520 NICs. We use Dell PowerEdge R420 servers. >> >> CPU: Intel(R) Xeon(R) CPU E5-2430 >> NIC: Intel Corporation Ethernet 10G 2P X520 Adapter (rev 01) >> Kernel: Linux 4.1.13 with in-tree ixgbe 4.0.1-k >> >> One of those servers with relatively constant TCP traffic on ports 80 + >> 443 has rebooted three times, each time after about 3 days of uptime. >> Another server with less constant traffic has rebooted after 7 days. Two >> other servers with way less network traffic did not reboot within 7 days. >> >> There is nothing in the logs when the reboots happen. >> >> We've just updated the NIC firmware from version 16.0.21 to version >> 16.5.20 but according to the changelog supplied by Dell this probably won't >> fix the problem. (I'll let you know in a few days.) >> >> http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverI >> d=6FD9P >> >> Is there anything we can do? >> >> Thanks, >> Steffen ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. 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Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
