Date: Fri, 15 Sep 2006 18:17:10 +0400 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Slawek Zak <slawek.zak@gmail.com> Cc: freebsd-net@FreeBSD.org Subject: Re: Rapid link state changes on bge(4) interface Message-ID: <20060915141710.GR27667@FreeBSD.org> In-Reply-To: <787bbe1c0609130609l33fb29dawc465b7bcfb2f430e@mail.gmail.com> References: <787bbe1c0609130609l33fb29dawc465b7bcfb2f430e@mail.gmail.com>
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On Wed, Sep 13, 2006 at 03:09:56PM +0200, Slawek Zak wrote: S> I'm testing network failover on IBM BladeCenter running FreeBSD 6.1 S> STABLE for Sep 6th. S> S> I suspect a problem with link state change detection in bge code. When S> I disable internal port on chassis built-in ethernet switch, kernel S> floods syslog with messages about link state changes and coalescing S> them. Log snippet follows: S> S> Sep 13 14:58:28 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:28 w3-6 kernel: bge1: link state changed to UP S> Sep 13 14:58:29 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:29 w3-6 kernel: bge1: link state changed to UP S> Sep 13 14:58:29 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:29 w3-6 kernel: bge1: 4 link states coalesced S> Sep 13 14:58:29 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:29 w3-6 kernel: bge1: 11 link states coalesced S> Sep 13 14:58:29 w3-6 kernel: bge1: link state changed to UP S> Sep 13 14:58:30 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:30 w3-6 kernel: bge1: 3 link states coalesced S> Sep 13 14:58:30 w3-6 kernel: bge1: link state changed to UP S> Sep 13 14:58:30 w3-6 kernel: bge1: 7 link states coalesced S> Sep 13 14:58:30 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:30 w3-6 kernel: bge1: 4 link states coalesced S> Sep 13 14:58:30 w3-6 kernel: bge1: link state changed to DOWN S> Sep 13 14:58:30 w3-6 kernel: bge1: 2 link states coalesced S> S> As you can see, messages are generated in rapid succession and S> therefore any probing of link state change by ng_one2many for S> interface failover is meaningless. Ethernet switch doesn't register S> and log any interface state changes after disabling this port. LS20 S> blades use chipset 8850. My firmware is 3.38, full changelog, if it is S> of any help, is here: S> S> http://www-307.ibm.com/pc/support/site.wss/license.do?filename=pc_servers/brcm_fw_nic_12021_anyos_anycpu.chg S> S> Any ideas what might be wrong? Please try to add hw.bge.fake_autoneg=1 to /boot/loader.conf. May be this will help. -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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