We are experiencing a very similar situation. We have a server running
Debian 6.0 (Squeeze) as a Xen host with several guests. From time to
time the network interface on the host locks up in a cycle of timeouts
and trying to reset itself. This has happened five times in the past
five weeks, three of those in the past week.
We have a second Xen host server with nearly the same configuration that
has not experienced this network issue. It does have a newer firmware
version for the tg3 (5721-v3.61) than the server experiencing the
problem (5721-v3.55a). It is possible that the Xen guests on the second
server do not have the network traffic loads that trigger the problem on
the first server.
David, can you compare the firmware versions of your servers? Is it
possible this issue has been fixed in the firmware?
Below are some facts about our server that is experiencing the problem.
Here is a snippet from the syslog:
May 22 11:07:07 carndum kernel: [174743.812042] tg3: eth0: transmit timed out,
resetting
May 22 11:07:07 carndum kernel: [174743.812084] tg3: DEBUG:
MAC_TX_STATUS[00000008] MAC_RX_STATUS[00000000]
May 22 11:07:07 carndum kernel: [174743.812122] tg3: DEBUG:
RDMAC_STATUS[00000000] WDMAC_STATUS[00000000]
May 22 11:07:07 carndum kernel: [174743.913855] tg3: tg3_stop_block timed out,
ofs=4800 enable_bit=2
May 22 11:07:07 carndum kernel: [174743.936658] tg3: eth0: Link is down.
May 22 11:07:07 carndum kernel: [174743.984229] br0: port 1(eth0) entering
disabled state
May 22 11:07:10 carndum kernel: [174747.106573] tg3: eth0: Link is up at 1000
Mbps, full duplex.
May 22 11:07:10 carndum kernel: [174747.106612] tg3: eth0: Flow control is off
for TX and off for RX.
May 22 11:07:10 carndum kernel: [174747.106849] br0: port 1(eth0) entering
forwarding state
lspci snippet:
0e:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit
Ethernet PCI Express (rev 11)
0f:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit
Ethernet PCI Express (rev 11)
lshw snippet:
*-network
description: Ethernet interface
product: NetXtreme BCM5721 Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0e:00.0
logical name: eth0
version: 11
serial: 00:19:bb:eb:e4:1c
size: 1GB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt
10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3
driverversion=3.102 duplex=full firmware=5721-v3.55a, ASFIPMI v6.17 latency=0
multicast=yes port=twisted pair speed=1GB/s
resources: irq:16 memory:dc200000-dc20ffff
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https://bugs.launchpad.net/bugs/615053
Title:
tg3 network disconnects during high usage
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