CENTOS7 execution Umount Hint: device is busy or target is busy workaround

Problem Description:

Because the mount is wrong, I want to cancel the mount, but Umount reports the following error:

umount /dev/sdc1umount:/data1:target is busy.         Info About processes, the         device is found by lsof (8fuser(1))

According to the description should other processes occupy the mounted directory

Solution:

Closes the occupied process, but shows no command when using the Fuser command

fuser -m/dev/sdc1fuser: Command not found

Then you need to install:

Yum Install -y Psmisc

Then use the Fuser command to view the process:

fuser -m/dev/sdc1/dev/sdc1:           10246c

PS grep 10246 Root      10246  0.0  0.0 116460  3212 pts/0    ss+  Oct19   0:xx -bash

To close a process using the KILL command:

Kill -910246

Close the process and then umount the success:

Umount /DEV/SDC1

Finally, you can use Df-h to view the mount situation, you will find that the mount has been canceled successfully!

Centos7 execution Umount hint: device is busy or target is busy workaround