Comment # 3 on bug 1205261 from Felix Miata

(In reply to Antonio Feijoo from comment #2)
> I recommend
> you to create a new conf snippet with a higher number, because this will be
> overwritten after a dracut update.

I haven't touched it. Wouldn't changing it from "by-uuid" to "by-label" just
change the usr/lib/dracut/hooks/emergency failure from a wrong ID to a wrong
label? Is this recommendation just an aside for future use? I've now created
13-persistent-local.conf containing persistent_policy="by-label", but I have at
least 40 more TW installations on other multiboot PCs subject to disk upgrades
and restoring from backup.

For / filesystem there is Grub linu line option root= to override initrd, but
what is there for whatever this usr/lib/dracut/hooks/emergency is there for?
Once a Grub menu selection has been made, there's no need for anything to read
the ESP again before init completes (absent any encrypted filesystems), is
there? What man page covers usr/lib/dracut/hooks/emergency? man
/etc/dracut.conf.d/10-persistent_policy.conf is unhelpful.