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摘要： OverviewThe u32 filter allows you to match on any bit field within a packet, so it is in some ways the most powerful filter provided by the Linux traffic control engine. It is also the most complex, and by far the hardest to use. To explain it I will start with a bit of a tutorial.MatchingThe base o 阅读全文

摘要： 安装：yum install sysstat查看与LVM对应关系：lvdisplay|awk '/LV Name/{n=$3} /Block device/{d=$3; sub(".*:","dm-",d); print d,n;}'实例：$iostat -x 1Linux 2.6.33-fukai (fukai-laptop) _i686_ (2 CPU)avg-cpu: %user %nice %system %iowait %steal %idle 5.47 0.50 8.96 48.26 0.00 36.... 阅读全文