当事情崩溃时,这是/ var / messages的内容：
Dec 21 19:47:45 localhost kernel: ------------[ cut here ]------------ Dec 21 19:47:45 localhost kernel: WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0x26d/0x280() (Not tainted) Dec 21 19:47:45 localhost kernel: Hardware name: KGP(M)E-D16 Dec 21 19:47:45 localhost kernel: NETDEV WATCHDOG: eth0 (e1000e): transmit queue 0 timed out Dec 21 19:47:45 localhost kernel: Modules linked in: ipt_REDIRECT iptable_nat nf_nat xt_multiport xt_owner ext3 jbd nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables autofs4 sunrpc cpufreq_ondemand powerNow_k8 freq_table mperf ipv6 e1000e microcode serio_raw k10temp edac_core edac_mce_amd i2c_piix4 i2c_core sg shpchp ext4 mbcache jbd2 sd_mod crc_t10dif ata_generic pata_acpi pata_atiixp ahci dm_mirror dm_region_hash dm_log dm_mod [last unloaded: nf_conntrack] Dec 21 19:47:45 localhost kernel: Pid: 0,comm: swapper Not tainted 2.6.32-220.el6.x86_64 #1 Dec 21 19:47:45 localhost kernel: Call Trace: Dec 21 19:47:45 localhost kernel: <IRQ> [<ffffffff81069b77>] ? warn_slowpath_common+0x87/0xc0 Dec 21 19:47:45 localhost kernel: [<ffffffff81069c66>] ? warn_slowpath_fmt+0x46/0x50 Dec 21 19:47:45 localhost kernel: [<ffffffff8144a54d>] ? dev_watchdog+0x26d/0x280 Dec 21 19:47:45 localhost kernel: [<ffffffff8144a2e0>] ? dev_watchdog+0x0/0x280 Dec 21 19:47:45 localhost kernel: [<ffffffff8107c957>] ? run_timer_softirq+0x197/0x340 Dec 21 19:47:45 localhost kernel: [<ffffffff810a0b70>] ? tick_sched_timer+0x0/0xc0 Dec 21 19:47:45 localhost kernel: [<ffffffff8102ad2d>] ? lapic_next_event+0x1d/0x30 Dec 21 19:47:45 localhost kernel: [<ffffffff81072161>] ? __do_softirq+0xc1/0x1d0 Dec 21 19:47:45 localhost kernel: [<ffffffff81095770>] ? hrtimer_interrupt+0x140/0x250 Dec 21 19:47:45 localhost kernel: [<ffffffff8100c24c>] ? call_softirq+0x1c/0x30 Dec 21 19:47:45 localhost kernel: [<ffffffff8100de85>] ? do_softirq+0x65/0xa0 Dec 21 19:47:45 localhost kernel: [<ffffffff81071f45>] ? irq_exit+0x85/0x90 Dec 21 19:47:45 localhost kernel: [<ffffffff814f4de0>] ? smp_apic_timer_interrupt+0x70/0x9b Dec 21 19:47:45 localhost kernel: [<ffffffff8100bc13>] ? apic_timer_interrupt+0x13/0x20 Dec 21 19:47:45 localhost kernel: <EOI> [<ffffffff810375ab>] ? native_safe_halt+0xb/0x10 Dec 21 19:47:45 localhost kernel: [<ffffffff810145dd>] ? default_idle+0x4d/0xb0 Dec 21 19:47:45 localhost kernel: [<ffffffff81009e06>] ? cpu_idle+0xb6/0x110 Dec 21 19:47:45 localhost kernel: [<ffffffff814d411a>] ? rest_init+0x7a/0x80 Dec 21 19:47:45 localhost kernel: [<ffffffff81c1ff76>] ? start_kernel+0x424/0x430 Dec 21 19:47:45 localhost kernel: [<ffffffff81c1f33a>] ? x86_64_start_reservations+0x125/0x129 Dec 21 19:47:45 localhost kernel: [<ffffffff81c1f438>] ? x86_64_start_kernel+0xfa/0x109 Dec 21 19:47:45 localhost kernel: ---[ end trace 1c035fe603219926 ]--- Dec 21 19:47:45 localhost kernel: e1000e 0000:03:00.0: eth0: Reset adapter Dec 21 19:47:46 localhost abrt-dump-oops: Reported 1 kernel oopses to Abrt Dec 21 19:47:46 localhost abrtd: Directory 'oops-2012-12-21-19:47:46-12170-0' creation detected Dec 21 19:47:47 localhost abrtd: Can't open file '/var/spool/abrt/oops-2012-12-21-19:47:46-12170-0/uid': No such file or directory Dec 21 19:47:54 localhost kernel: Bridge firewalling registered Dec 21 19:49:05 localhost abrtd: Sending an email... Dec 21 19:49:05 localhost abrtd: Email was sent to: root@localhost Dec 21 19:49:05 localhost abrtd: New problem directory /var/spool/abrt/oops-2012-12-21-19:47:46-12170-0,processing Dec 21 19:49:05 localhost abrtd: Can't open file '/var/spool/abrt/oops-2012-12-21-19:47:46-12170-0/uid': No such file or directory
看起来像名为KGP(M)E-D16的硬件停止等等.在谷歌看来它显示它是主板.
我还应该检查什么？我已经向fdcservers.net报告过了.
他们声称这是内核错误.而不是硬件问题.什么内核bug？为什么会导致服务器崩溃？我该怎么办？
检查网卡的驱动程序我得到了这个
root@host [/var/log]# ethtool -i eth0 driver: e1000e version: 1.9.5-k firmware-version: 1.8-0 bus-info: 0000:03:00.0 root@host [/var/log]# ethtool -i eth1 driver: e1000e version: 1.9.5-k firmware-version: 1.8-0 bus-info: 0000:02:00.0 root@host [/var/log]# ethtool -i eth2 Cannot get driver information: No such device
话虽如此,
解决方法
问题在于它表明了自己. net / sched / sch_generic.c的第261行,它是通用的数据包调度程序例程.
恐慌本身就在这里
Dec 21 19:47:45 localhost kernel: [<ffffffff8144a54d>] ? dev_watchdog+0x26d/0x280
因此,网络设备超时.正如源代码所说,某些队列被阻止,计时器到期.它应该在特定的时间内保持设备,但计数器结束了.这是代码的相关部分.
if (!mod_timer(&dev->watchdog_timer,258 round_jiffies(jiffies + 259 dev->watchdog_timeo))) 260 dev_hold(dev);
你看到有一个看门狗定时器,计数器是以jiffies测量的.当这个计时器结束时,它会发出警告.
这与您的网卡或驱动程序有关.我会立即拒绝内核bug理论,除非他们能证明这一点.并且没有办法告诉它,除非有人报告确切的呼叫追踪或英特尔知道这个跟踪并且它发生在相同的硬件,相同的驱动程序,相同的固件上.简而言之,没有检查内核转储或vmcore,没有经验的人会告诉这是内核错误.处理计时器的内核部分经过精心设计,e1000并不是一个不起眼的驱动程序.
我不想解散你的服务器人,但这是我的看法.检查您的ethtool -S ethX输出以查看是否存在任何丢弃,超限,超时等是值得的.
