Delay mounts after encrypted home folder is ready

Question

I have set up a few bind mounts in fstab, mounting one folder in my home directory to another (AeroFS no sym-link circumvent). My home folder is encrypted.

When the system boots up, it attempts to mount the folders inside home folder prior to mounting the encrypted home folder itself, causing an error.

How can I edit fstab to have the encrypted home folder mount first?

I tried adding noauto, it didn't work.

EDIT: Also, I want to maintain the encryption for security reasons.

fstab content:

# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation
UUID=8e26dd0d-f57f-4b63-93b3-7f2743d6fe7a /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=C2BB-18A8  /boot/efi       vfat    defaults        0       1
# /home was on /dev/sda4 during installation
UUID=062418c7-ba50-40e4-b3ea-42663e92eba8 /home           ext4    defaults        0       2
# swap was on /dev/sda3 during installation
#UUID=ac66f7ee-7dbe-4e56-9f42-459038a11a12 none            swap    sw              0       0
/dev/mapper/cryptswap1 none swap sw 0 0

#
#Bind mounts for AeroFS to sync outside it's folder:
#
/home/user/Desktop  /home/user/AeroFS/Desktop   none    bind    0   0
/home/user/Documents    /home/user/AeroFS/Documents none    bind    0   0
/home/user/Music    /home/user/AeroFS/Music     none    bind    0   0
/home/user/Pictures /home/user/AeroFS/Pictures  none    bind    0   0
#

lsblk output:

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 465.8G  0 disk 
├─sda1   8:1    0   954M  0 part /boot/efi
├─sda2   8:2    0  55.9G  0 part /
├─sda3   8:3    0  14.9G  0 part 
└─sda4   8:4    0   394G  0 part /home

Answer 1

The accepted answer doesn't work since non-root users are not able to use the --bind option.

What I used instead was bindfs. It allows non-root users to create bound mounts.

First install bindfs: sudo apt install bindfs. Then, open /etc/fuse.conf and uncomment the line user_allow_other.

Then, in your startup script (which runs after you log in), use the following commands to mount:

bindfs /home/user/Desktop   /home/user/AeroFS/Desktop
bindfs /home/user/Documents /home/user/AeroFS/Documents
bindfs /home/user/Music     /home/user/AeroFS/Music
bindfs /home/user/Pictures  /home/user/AeroFS/Pictures

Answer 2

Easy:

1. Remove the following lines from fstab:

   #
   #Bind mounts for AeroFS to sync outside it's folder:
   #
   /home/user/Desktop  /home/user/AeroFS/Desktop   none    bind    0   0
   /home/user/Documents    /home/user/AeroFS/Documents none    bind    0   0
   /home/user/Music    /home/user/AeroFS/Music     none    bind    0   0
   /home/user/Pictures /home/user/AeroFS/Pictures  none    bind    0   0
   #
   

2. create the following shell script:

   #!/bin/bash
   #
   # This script binds AeroFS mounts to sync outside their folder,
   # as an answer to https://askubuntu.com/questions/604361/delay-mounts-after-encrypted-home-folder-is-ready
   # 
   # Copyright (c) 2014 Fabby
   
   # This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
   # This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. See the GNU General Public License for more details.
   # You DID NOT receive a copy of the GNU General Public License along with this program as the license is bigger then this program.
   
   mount --bind /home/user/Desktop   /home/user/AeroFS/Desktop
   mount --bind /home/user/Documents /home/user/AeroFS/Documents
   mount --bind /home/user/Music     /home/user/AeroFS/Music
   mount --bind /home/user/Pictures  /home/user/AeroFS/Pictures
   

3. Save it under /home/user/bin/MountAeroFS.sh (create the bin directory if it doesn't exist.)

4. Open Startup Applications, and add the following Command: MountAeroFS.sh. As Name: and Comment: you can add anything to remind you what this is about.

5. Reboot (as you've just changed your fstab)

Done!