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/

Montar el disco

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

• 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/