Hi, am running into:
Bug 1026860 - lvm2: services specified with SYSTEMD_WANTS are not started for some LVM volumes
This happens when there are mounts in fstab, other than root, that reside on LV over raid 10.
bz is long, but there are fixes in fedora world for the issue.
Manual workaround is to issue a systemctl -a | grep lvm2 and find the failed service, then issue systemctl start lvm2-pvscan@.service and then continue with mount -a and finally exit. System startup should continue to desktop.