Using 'quota -u' not work in my servers
Make sure you use add "usrjquota=aquota.user,grpjquota=aquota.group,usrquota,grpquota" to each entry you want quotas in /etc/fstab:
proc /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
/dev/md0 /boot ext3 defaults 1 1
/dev/md1 / ext4 rw,discard,noatime,nodiratime,usrjquota=aquota.user,grpjquota=aquota.group,usrquota,grpquota,jqfmt=vfsv0 1 1
/dev/md2 /home ext4 rw,noatime,nodiratime,usrjquota=aquota.user,grpjquota=aquota.group,usrquota,grpquota,jqfmt=vfsv0 0 0
/dev/md3 /var/lib/mysql ext4 rw,discard,noatime,nodiratime,usrjquota=aquota.user,grpjquota=aquota.group,usrquota,grpquota,jqfmt=vfsv0 1 1
/root/swapfile1 swap swap defaults 0 0
Then reboot to remount all partition.
Then run /script/fixquota and all will work ok.