====== Para que son las Cuotas ======
====== Ext4 ======
<code bash>
apt install quota

quotacheck
quotaon
repquota


echo '/dev/md0 /mnt/raid/  ext4 usrquota,grpquota 0 0' >> /etc/fstab
mount -o remount,rw /mnt/raid/
mount |grep raid
chmod 777 /mnt/raid/
quotacheck  -vu lisa
quotaon -a
edquota -u lisa
su - lisa
dd if=/dev/zero of=/mnt/raid/lisadile

  dd: writing to 'lisadile': Disk quota exceeded

repquota  /mnt/raid/
</code>
====== Xfs ======

Montar el disco 
<code bash>
echo '/dev/md0 /mnt/raid/  xfs uquota 0 0' >> /etc/fstab
mount -o remount /mnt/raid/
umount /mnt/raid
mount /mnt/raid
xfs_quota -x -c 'limit bsoft=10m bhard=20m linda' /mnt/raid
xfs_quota -x -c report /mnt/raid
chmod 777 /mnt/raid/

su - lisa
dd if=/dev/zero of=/mnt/raid/lisadile

  dd: writing to 'lisadile': Disk quota exceeded
</code>
====== Referencias ======
  * https://www.digitalocean.com/community/tutorials/how-to-set-filesystem-quotas-on-ubuntu-18-04
  * https://www.digitalocean.com/community/tutorials/how-to-set-filesystem-quotas-on-debian-9
  * https://www.tecmint.com/set-filesystem-disk-quotas-on-ubuntu/