checkfs checks a filesystem type against the FSCKTYPES variable before
checking it, and additionally handles the value FSCKTYPES=none to
avoid checking any filesystem.  checkroot should do the same.  This
makes it easy to disable fsck, either completely or for certain types
of filesystems.

- Josh Triplett

Thanks.

I am not convinced of the need for excluding groups of rootfs types. I presume
this is why FSCKTYPES support isn't in checkroot.sh.

Severity is wishlist.

Mark