I've got a CentOS 7 box serving NFSv3/4 exports - the served filesystem (users' home directories) is an ext4 partition (so, no XFS, which I get is more complicated for quotas) configured with usrquota which correctly returns per-user quota's when logged on it:
[XXXXXXX@YYYYYY ~]$ quota
Disk quotas for user XXXXXXX (uid 12345):
Filesystem blocks quota limit grace files quota limit grace
/dev/sdb1 134198592 145000000 150000000 1804006 0 0
The rpc-rquotad daemon is installed on this server to make quota work when the user is logged on the CentOS 5 box (old, I know) via an NFSv3 export:
[XXXXXXX@ZZZZZZ ~]$ quota
Disk quotas for user XXXXXXX (uid 12345):
Filesystem blocks quota limit grace files quota limit grace
ZZZZZZ:/apotto/home1
134198632 145000000 150000000 1804008 0 0
On Fedora 30 clients that import the same home directory from the same server via NFSv4, everything works perfectly EXCEPT the same quota command, which returns nothing; SELinux enabled or disabled on the clients does not make any difference, as well as 'firewalld' running or not.
The ONLY vaguely relevant search that turns up on Google seems to be this from the Red Hat Knowledgebase which I cannot read without subscription.
Any advice?
P.S.: I just noticed that, on another cluster with an identical setup but CentOS 7 clients, whenever quota is issued, at least this appears in the journal of the server machine:
set 09 12:41:59 WWWWWWWWWWW rpc.rquotad[267549]: Cannot stat() given mountpoint /home1: No such file or directory
set 09 12:41:59 WWWWWWWWWWW rpc.rquotad[267549]: Skipping...
