systemctl --no-pager show -p "Wants" local-fs.target
is the command I wanted. but it did not help me find the ultimate cause of the dependency failure.
I THINK the problem is in cryptsetup, but I will keep testing.
My "upgrade" to 2.6.40-4.fc15.x86_64 failed, and now I get :
modprobe: FATAL: Error inserting padlock_sha (/lib/modules/2.6.40-4.fc15.x86_64/kernel/drivers/crypto/padlock-sha.ko): No such device
padlock_sha: VIA PadLock Hash Engine not detected.
Those may be a red herring though.
Time for new thread.