detaches the NILFS2 file system(s) mentioned from the file hierarchy.
This is the umount helper for NILFS2 to shutdown the garbage collector
nilfs_cleanerd(8) before detaching the file system. Usually it
should be invoked through umount(8).
See umount(8) for the full set of options. Commonly used options
with NILFS2 are as follows:
Unmount without writing in /etc/mtab. This option must be used
carefully because mount.nilfs2 and umount.nilfs2 use the
table to store the process ID of nilfs_cleanerd(8).
In case unmounting fails, try to remount read-only.
THE LOOP DEVICE
will free the loop device (if any) associated with the mount, in case
it finds the option `loop=...' in /etc/mtab. The -d option,
which also allows umount(8) to free the loop device without the
`loop=...' option, is not supported.
is written by Ryusuke Konishi <email@example.com> for NILFS2, based on
the umount program included in the util-linux package.