Can't open /var/run/atd.pid to signal atd. No atd running?重启atd服务
service atd restart重新开启at定时任务
at 15:14 today -f /tmp/at_task.sh得到如下快照信息
job 2 at Wed Mar 13 15:14:00 2019
yum -y install systemtap
SystemTap 是对 Linux 内核监控和跟踪的工具得到文件的inode
利用systemtap中的inodewatch.stp工具来查找写文件的进程号
stap /usr/share/systemtap/examples/io/inodewatch.stp 253 1 4210339安装debuginfo kernal
......
Missing separate debuginfos, use: debuginfo-install kernel-3.10.0-862.14.4.el7.x86_64
Pass 2: analysis failed. [man error::pass2]
Number of similar error messages suppressed: 2.
stap /usr/share/systemtap/examples/io/inodewatch.stp 253 1 4210339iostat(4671) vfs_write 0xfd00001/4210339
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