umount.nilfs2 - unmount NILFS2 file systems

umount.nilfs2  is  written by Ryusuke Konishi <konishi.ryusuke@gmail.com> for NILFS2, based on the umount
       program included in the util-linux package.

umount.nilfs2 is part of the nilfs-utils package and is available from https://nilfs.sourceforge.io.

umount.nilfs2  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).

       umount.nilfs2 - unmount NILFS2 file systems

       See umount(8) for the full set of options.  Commonly used options with NILFS2 are as follows:

       -V     Print version and exit.

       -i     Don't call umount.nilfs2.  Valid for umount(8).

       -n     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).

       -r     In case unmounting fails, try to remount read-only.

       -v     Verbose mode.

nilfs(8), umount(8), mount.nilfs2(8), nilfs_cleanerd(8).

nilfs-utils version 2.2                             Apr 2014                                    UMOUNT.NILFS2(8)

umount [-tnilfs2] [-dfilnrv] device | dir [...]

       umount.nilfs2 [-nrv] dir [...]

       umount.nilfs2 [-V]

umount.nilfs2  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.