umount 时报错：device is busy.

最新推荐文章于 2025-06-07 16:59:55 发布

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#umount 失败

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本文记录了在尝试卸载Cloudera SCM Agent过程中遇到的设备忙错误，并详细展示了如何通过查找占用进程、强制停止进程最终成功卸载的具体步骤。

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[root@cdh opt]# umount /opt/cm-5.13.2/run/cloudera-scm-agent/process/
umount: /opt/cm-5.13.2/run/cloudera-scm-agent/process: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))

umount /opt/.. -f 失败

[root@cdh opt]# umount /opt/cm-5.13.2/run/cloudera-scm-agent/process/ -f
umount2: Device or resource busy
umount: /opt/cm-5.13.2/run/cloudera-scm-agent/process: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
umount2: Device or resource busy

fuser -m

[root@cdh opt]# fuser -m /opt/cm-5.13.2/run/cloudera-scm-agent/process/
/opt/cm-5.13.2/run/cloudera-scm-agent/process/: 2547

[root@cdh opt]# ps -aux|grep 2547
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
root 2547 0.2 0.1 203076 13412 ? Ss 12:23 0:14 /opt/cm-5.13.2/lib64/cmf/agent/build/env/bin/python /opt/cm-5.13.2/lib64/cmf/agent/build/env/bin/supervisord

[root@cdh opt]# kill -9 2547

[root@cdh opt]# fuser -m /opt/cm-5.13.2/run/cloudera-scm-agent/process/
[root@cdh opt]#
[root@cdh opt]# umount /opt/cm-5.13.2/run/cloudera-scm-agent/process/
[root@cdh opt]#