Cannot create new user on mounted raid1 partition

I have Ubuntu 16.04 LTS. System is on ssd drive. Server has additional two hdd in software raid1 created by mdadm. Matrix is mounted in /mnt/ftp directory. In this directory I need create users with they home directories. But when I try execute command

Code:

sudo useradd --home /mnt/ftp/home/ctp --create-home --shell /bin/bash ctp 

I get error useradd: cannot create directory /mnt/ftp/home/ctp. What is the problem?

My fstab:

Code:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation
UUID=f23883d0-dd24-4fc8-ace7-c7e6769acf66 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=1570-E5FC  /boot/efi       vfat    umask=0077      0       1
# swap was on /dev/sda3 during installation
UUID=d904a5d9-6292-48e4-b8fd-594bb7486f83 none            swap    sw              0       0

#Macierz RAID
UUID="4c5d5252-48c2-4e2e-b947-ac19674adc70"     /mnt/ftp        ext4    defaults        0 0

When I added user using command

Code:

sudo useradd -d /mnt/ftp/home/ctp ctp

, user were added but without directory. I tried add it manually but without success: mkdir: cannot create directory ‘/mnt/ftp/home/ctp’: No such file or directory
I haven't SELinux and removed Apparmor.

 

Code:

cd /mnt/ftp/home && printf "%s\n" "Success, could enter /mnt/ftp/home." || printf "%s\n" "Error, couldn't enter /mnt/ftp/home"

 

What that means? Matrix raid is mounted in /mnt/ftp and there isn't any home directory. So above probably execute as "Error, couldn't[...]".

 

run that command, post the output

 

Ok, so output is:

Code:

-bash: cd: /mnt/ftp/home: No such file or directory
Error, couldn't enter /mnt/ftp/home

 

Hmmm, my mistake.. I thought it fails because the path does not exist. However from the man page:

 

Does it mean that I should change somehow default place of /home directory to my mounted raid partition?

I use command

Code:

sudo useradd --home /mnt/ftp/home/ctp --create-home --shell /bin/bash ctp 

When I try create home directory of particular user in /home - there is no problem - though directory does not exists. When I try create it in /mnt/ftp - then get error.