igb watchdog timeouts

[Robin Sommer]

Hello all,

quite a while ago I asked about the problem below. Unfortunately, I
haven't found a solution yet and I'm actually still seeing these
timeouts after just upgrading to 8.2-RC1. Any further ideas on what
could be triggering them, or how I could track down the cause?

Thanks,

Robin

On Thu, Jul 29, 2010 at 14:56 -0700, I wrote:

> Since upgrading from 8.0 to 8.1-RELEASE, I'm seeing lots of messages
> like those below on all my SuperMicro SBI-7425C-T3 blades. There's
> almost no traffic on those interfaces. 
> 
> Any idea?
> 
> Thanks,
> 
> Robin
> 
> Jul 29 13:01:18 blade0 kernel: igb1: Watchdog timeout -- resetting
> Jul 29 13:01:18 blade0 kernel: igb1: Queue(0) tdh = 256, hw tdt = 266
> Jul 29 13:01:18 blade0 kernel: igb1: TX(0) desc avail = 1013,Next TX to Clean = 255
> Jul 29 13:01:18 blade0 kernel: igb1: link state changed to DOWN
> Jul 29 13:01:18 blade0 kernel: igb1: link state changed to UP
> Jul 29 13:01:29 blade0 kernel: igb1: Watchdog timeout -- resetting
> Jul 29 13:01:29 blade0 kernel: igb1: Queue(0) tdh = 0, hw tdt = 10
> Jul 29 13:01:29 blade0 kernel: igb1: TX(0) desc avail = 1014,Next TX to Clean = 0
> Jul 29 13:01:29 blade0 kernel: igb1: link state changed to DOWN
> Jul 29 13:01:29 blade0 kernel: igb1: link state changed to UP
> Jul 29 13:01:46 blade0 kernel: igb1: Watchdog timeout -- resetting
> Jul 29 13:01:46 blade0 kernel: igb1: Queue(0) tdh = 32, hw tdt = 33
> Jul 29 13:01:46 blade0 kernel: igb1: TX(0) desc avail = 1022,Next TX to Clean = 31
> Jul 29 13:01:46 blade0 kernel: igb1: link state changed to DOWN
> Jul 29 13:01:46 blade0 kernel: igb1: link state changed to UP
> Jul 29 13:01:57 blade0 kernel: igb1: Watchdog timeout -- resetting
> Jul 29 13:01:57 blade0 kernel: igb1: Queue(0) tdh = 0, hw tdt = 10
> Jul 29 13:01:57 blade0 kernel: igb1: TX(0) desc avail = 1014,Next TX to Clean = 0
> Jul 29 13:01:57 blade0 kernel: igb1: link state changed to DOWN
> Jul 29 13:01:58 blade0 kernel: igb1: link state changed to UP
> Jul 29 13:02:13 blade0 kernel: igb1: Watchdog timeout -- resetting
> 
> > grep igb /var/run/dmesg.boot
> igb0: <Intel(R) PRO/1000 Network Connection version - 1.9.5> port 0x2000-0x201f mem 0xfc940000-0xfc95ffff,0xfc920000-0xfc93ffff,0xfc900000-0xfc903fff irq 16 at device 0.0 on pci4
> igb0: [FILTER]
> igb0: Ethernet address: 00:30:48:9e:22:00
> igb1: <Intel(R) PRO/1000 Network Connection version - 1.9.5> port 0x2020-0x203f mem 0xfc980000-0xfc99ffff,0xfc960000-0xfc97ffff,0xfc904000-0xfc907fff irq 17 at device 0.1 on pci4
> igb1: [FILTER]
> igb1: Ethernet address: 00:30:48:9e:22:01
> 
> > pciconf -lv 
> [...]
> igb0 at pci0:4:0:0: class=0x020000 card=0x10a915d9
> chip=0x10a98086 rev=0x02 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82575EB Gigabit Backplane Connection'
>     class      = network
>     subclass   = ethernet
> igb1 at pci0:4:0:1:        class=0x020000 card=0x10a915d9
> chip=0x10a98086 rev=0x02 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82575EB Gigabit Backplane Connection'
>     class      = network
>     subclass   = ethernet
> [...]

-- 
Robin Sommer * Phone +1 (510) 722-6541 * robin at icir.org
ICSI/LBNL    * Fax   +1 (510) 666-2956 *   www.icir.org