I have set up user quotas on an ext4 filesystem. It does not appear that the quota system is being updated, except when I manually run quotacheck. More detail: I run "warnquota -s" from a script in /etc/cron.daily. I noticed that no one had received an "over quota" message in a long time. Using "repquota -as", it indeed looked as though everyone was under their quotas. But "du" showed many people were over quota. So I did a "quotaoff -a ; quotacheck -vam ; quotaon -a". That night, several warnquota-generated messages went out. My users diligently cleaned up their homes. Fast forward 24 hours, and the users received the same warnquota emails. repquota showed them as being over, but "du" told a different story. System is CentOS 6.3, kernel 2.6.32-279.2.1.el6.x86_64. # dmesg | grep -i quota VFS: Disk quotas dquot_6.5.2 The partition is type ext4 mounted at /share: # cat /proc/mounts | grep share /dev/mapper/VolGroup_Share-LogVol_Share /share ext4 rw,noatime,nodiratime,barrier=0,nobh,data=writeback,jqfmt=vfsv0,usrjquota=aquota.user 0 0 The ext4 volume sits on top of an lvm logical partion. That logical volume ultimately sits on top of an encrypted disk using cryptsetup luksFormat: # lvscan ACTIVE '/dev/VolGroup_Share/LogVol_Share' [4.48 TiB] inherit # pvscan PV /dev/mapper/luks-7f865362-ee9f-40de-bc07-73701b4662f3 VG VolGroup_Share lvm2 [4.48 TiB / 0 free] Is there something in my ext4 mount options that is incompatible with quota? Or maybe the encrypted layer is causing problems? Am I missing something else? Thanks!