How To Unmount A Busy Mount Point (Device Busy)
Last updated on JUNE 30, 2016
Applies to:Linux OS - Version Oracle Linux 4.4 and later
Most storage administration activities require that a file system be unmounted; all open files on the file system must be closed first or umount(8) will fail. Resources such as lsof(8) may reveal the offending process, but if not alternatives to a system reboot may be preferred.
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