quotas + iscsi + systemd problem

[Jeffrey M. Knerr]

 Hello. I have a server with a disk array using iscsi and multipath for
 /export/home. We serve /export/home to our lab machines with NFS. That
 all works fine, until I add quotas. Something about systemd + quotas +
 NFS + iscsi doesn't work right, and I'm not sure where to ask for help.
 If this is the place, see below. If not, let me know where. Thanks.

jeff


Debian GNU/Linux 9.1
4.9.0-3-amd64
systemd 232-25+deb9u1

With just systemd + iscsi + multipath + NFS, system boots fine and
NFS works. When I add user quotas, boot becomes unstable. Sometimes
it boots fine, sometimes everything works but nfsd doesn't start,
sometimes the network interfaces don't start, so I can't ssh in, and
even when I log in on the console, there's no /export/home because 
iscsi didn't log in to the disk array.

If I turn quotas off again (comment out the usrjquota=aquota.usr,
jqfmt=vfsv1 part in /etc/fstab for /export/home) everything boots fine:

# /etc/fstab
# with quotas (doesn't work)
#/dev/dm-1  /export/home ext4 _netdev,rw,noatime,nodev,acl,usrjquota=aquota.usr,jqfmt=vfsv1 0 2
#
# NO quotas (works)
/dev/dm-1  /export/home ext4 _netdev,rw,noatime,nodev,acl 0 2


Here are "journalctl -alb" and "systemd-analyze dump" for one boot
where things failed. Let me know what else would help (I have a test
system set up).

journal -alb output:
http://tinyurl.com/y9qymafc

systemd-analyze dump output:
http://tinyurl.com/ybp6jyfz