[root@Centos7 mnt1]# pwd
/mnt/mnt1

#Edit /etc/fstab
[root@Centos7 mnt1]# cat /etc/fstab
... ...
/dev/vdb7  /mnt/mnt1  ext4  defaults,usrquota,grpquota  0 2
... ...

#mount
[root@Centos7 mnt1]# mount /mnt/mnt1

#Create quota database
[root@Centos7 mnt1]# quotacheck --create-files --user --group /dev/vdb7


#edquota --user root
Disk quotas for user root (uid 0):
  Filesystem  blocks  soft  hard   inodes   soft   hard
  /dev/vdb7   17      15    16     6        3      4  

#edquota --group root
Disk quotas for group root (gid 0):
  Filesystem   blocks   soft  hard  inodes    soft    hard
  /dev/vdb7    13       14    15     2        3        5  

[root@Centos7 mnt1]# quotaon /mnt/mnt1

#Added a few files.... using touch to purposely exceed hard 
#and soft limits for inodes, and number of files.

[root@Centos7 mnt1]#  df --inodes .
Filesystem     Inodes IUsed IFree IUse% Mounted on
/dev/vdb7       25688    17 25671    1% /mnt/mnt1

#Add more files... not shown

[root@Centos7 mnt1]# ls -a
.  ..  aquota.group  aquota.user  file1  file2  file3  file4  lost+found
[root@Centos7 mnt1]# quotacheck --user --verbose .
quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.
quotacheck: Scanning /dev/vdb7 [/mnt/mnt1] done
quotacheck: Checked 2 directories and 6 files

[root@Centos7 mnt1]# touch file5

[root@Centos7 mnt1]# ls -a
.  ..  aquota.group  aquota.user  file1  file2  file3  file4  file5  lost+found

[root@Centos7 mnt1]# quotacheck --user --verbose .
quotacheck: Your kernel probably supports journaled quota 
but you are not using it. Consider switching to journaled 
quota to avoid running quotacheck after an unclean shutdown.
quotacheck: Scanning /dev/vdb7 [/mnt/mnt1] done
quotacheck: Checked 2 directories and 7 files

[root@Centos7 mnt1]# df -i .
Filesystem     Inodes IUsed IFree IUse% Mounted on
/dev/vdb7       25688    18 25670    1% /mnt/mnt1