eth*: Timesync Tx Control register not set as expe

eth0: Timesync Tx Control register not set as expected

eth1: Timesync Tx Control register not set as expected

如果你使用 CentOS 6.4 or 6.*, 并且网卡经常性自动断开, 检查下日志:-

# tail -100f /var/log/messages

If you see any of the following ‘e1000e’ errors or any other errors with e1000e:-
e1000e: eth0 NIC Link is Down
e1000e 0000:03:00.0: eth0: Reset adapter
e1000e 0000:03:00.0: eth0: Reset adapter unexpectedly
e1000e 0000:03:00.0: eth0: Timesync Tx Control register not set as expected
e1000e 0000:03:00.0: eth0: Cannot change link characteristics when SoL/IDER is active.

包含这种错误的话那么可以使用下面的方式解决

这个问题出现在 CentOS 6.x 版本的kernel中的Intel e1000e 驱动问题

官方的bugs
http://bugs.centos.org/view.php?id=6810
http://bugs.centos.org/view.php?id=6814

解决方案:

1. SSH登录服务器,如果无法登陆,请使用IPKVM

2. 添加 pcie_aspm=off 内核字段到 grub 的配置中config, 例子:-
# cd /boot/grub
# vim grub.conf
….

kernel /vmlinuz-2.6.32-431.5.1.el6.x86_64 ro root=/dev/mapper/vg_server21-LogVol00 nomodeset rd_MD_UUID=c8cb6527:97bad21d:75373cd1:0dd9261b KEYBOARDTYPE=pc KEYTABLE=us LANG=en_US.UTF-8 rd_LVM_LV=vg_server21/LogVol00 rd_LVM_LV=vg_server21/LogVol01 rd_NO_LUKS rd_MD_UUID=ec1c1858:b6c1ad58:6562ea8b:0e8113e2 crashkernel=auto SYSFONT=latarcyrheb-sun16 rd_NO_DM rhgb quiet pcie_aspm=off