Many thanks, and your fstab does confirm quotas (which is what your first post shows on grep as well), so I’m thinking you don’t need to use grub (for xfs, I think grub is needed)
Also, your fstab shows ext3, but I’m thinking it should be fine
I’m thinking now that centos 7 on ext3 and 4, does need the systemd unit as your first post
IW support will confirm exactly the issue, they rock and hopefully IW or your good self will update your post when resolved.
I think I’ll make this post a sticky as there is good content for grub and centos 7, but it will be tommorow when I’m by a PC, unless tapatalk can do this
Many thanks and have a lovely night