# vzctl set <veid> --quotaugidlimit 50 --save
# vzctl restart <veid>
# vzctl enter <veid>
entered into VE <veid>
VE# cat /etc/mtab 
/dev/simfs / reiserfs rw,usrquota,grpquota 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
tmpfs /dev tmpfs rw 0 0
devpts /dev/pts devpts rw 0 0