Intel 82599网卡异常挂死原因

最新推荐文章于 2022-03-22 18:14:28 发布

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最新推荐文章于 2022-03-22 18:14:28 发布

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原文链接：http://www.cnblogs.com/smith9527/p/10348953.html

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生产环境中，服务器网络出现故障，表现为SSH连接失败。内核日志显示Intel 82599网卡存在RXDCTL.ENABLE未清除、接口状态变化和Tx Unit Hang等问题。通过检查PCI信息和网卡寄存器，发现寄存器值全为0xffffffff，可能原因包括PCIe接口接触不良导致的通信异常。

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前提背景：

生产环境上，服务器网络突然断链，ssh连接失败。

问题初步定位：

查找内核日志，得到网卡异常信息

Jan 24 11:52:43 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 14 not cleared within the polling period

Jan 24 11:52:43 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 15 not cleared within the polling period

Jan 24 11:52:43 localhost kernel: bonding: bond5: link status definitely down for interface eth0, disabling it

Jan 24 11:52:43 localhost kernel: ixgbe 0000:84:00.0: eth0: detected SFP+: 5

Jan 24 11:52:43 localhost kernel: ixgbe 0000:84:00.0: eth0: NIC Link is Up 10 Gbps, Flow Control: RX/TX

Jan 24 11:52:43 localhost kernel: bond5: link status definitely up for interface eth0, 10000 Mbps full duplex.

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: Detected Tx Unit Hang

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: tx_buffer_info[next_to_clean]

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: tx hang 448 detected on queue 6, resetting adapter

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: Reset adapter

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 0 not cleared within the polling period

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 1 not cleared within the polling period

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 2 not cleared within the polling period

Jan 24 11:52:47 localhost kernel: ixgbe 0000:84:00.0: eth0: RXDCTL.ENABLE on Rx queue 3 not cleared within the polling period

网卡PCI信息：

# lspci -vvv -s 84:00.0
84:00.0 Ethernet controller: Intel Corporation 82599EB 10-Gigabit SFI/SFP+