Ubuntu の encryptfs をオフにする

ecryptfs_encrypt_page error attempting to write lower page

kaworu@ubuntu2:$ sudo ecryptfs-setup-private --undo

In the event that you want to remove your eCryptfs Private Directory setup,
you will need to very carefully perform the following actions manually:

1. Obtain your Private directory mountpoint
$ PRIVATE=`cat ~/.ecryptfs/Private.mnt 2>/dev/null || echo $HOME/Private`
2. Ensure that you have moved all relevant data out of your $PRIVATE directory
3. Unmount your encrypted private directory
$ ecryptfs-umount-private
4. Make your Private directory writable again
$ chmod 700 $PRIVATE
5. Remove $PRIVATE, ~/.Private, ~/.ecryptfs
Note: THIS IS VERY PERMANENT, BE VERY CAREFUL
$ rm -rf $PRIVATE ~/.Private ~/.ecryptfs
6. Uninstall the utilities (this is specific to your Linux distribution)
$ sudo apt-get remove ecryptfs-utils libecryptfs0