When Linux manages Umount devices, it is common to encounter "device is busy", assuming that umount a file system encounters such a situation. And you're not in the folder you need to uninstall. Then it is very likely that the utility user or process is using that folder.
# Umount/mntumount:/mnt:device is busyumount:/mnt:device is busy
Then you must use the Fuser command to view the process ID and the owner of the processes. Example:
# fuser-mu/mnt/mnt:25781c (Root) # kill-9 25781# umount/mnt
A situation like the one below represents the Rhythmbox user using that folder. You can then use FUSER-CK/DEV/SDC1 to kill the process.
# fuser-m/dev/sdc1/dev/sdc1:538# PS auxw|grep 538donncha 538 0.4 2.7 219212 56792? SLl FEB11 11:25 Rhythmbox
</pre><span style= "font-family:fangsong_gb2312; font-size:18px "><strong> assume that all these efforts have not worked, after the process has been killed. Then this time may need to add-f-l parameters, forced unloading </strong></span><p><span style= "font-family:fangsong_gb2312; font-size:18px "><strong># umount-f-l/mnt</strong></span></p><p></p>< Pre>
Note:
Use the following command to check the bad block of the SATA hard drive.
# badblocks-v/dev/sda# badblocks-v/dev/sdb# badblocks-v/dev/mapper/vgosi-lvol1checking blocks 0 to 10477568Checking For bad blocks (read-only test): Do Pass completed, 0 bad blocks found.
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Linux on device is busy processing