quota problem

Look it happens that at boot can´t turned on quota on the / partition but it did on /srv partition. And show this messages

quotaon: using //aquota.group on /dev/sda2 [/]: Invalid argument
quotaon: Maybe create new quota files with quotacheck(8)?
quotaon: using //aquota.user on /dev/sda2 [/]: Invalid argument
quotaon: Maybe create new quota files with quotacheck(8)?
/dev/sda3 [/srv]: group quotas turned on
/dev/sda3 [/srv]: user quotas turned on

The quotas seem to be ok on /srv but not on /

But after boot I run this commands

mount -o remount /
quotacheck -avugm
quotaon -avug

And I got turn quota On the / partition the messages are:

/dev/sda2 [/]: group quotas turned on
/dev/sda2 [/]: user quotas turned on
/dev/sda3 [/srv]: group quotas device is busy
/dev/sda3 [/srv]: user quotas device is busy

 

more method:

# quotaon -p -a

more method:

reboot