bin/55196: makefs fails to create ffs from small tree

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         55196
>Category:       bin
>Synopsis:       makefs fails to create ffs from small tree
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 22 09:20:01 +0000 2020
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current and others
>Organization:

>Environment:
System: NetBSD
Architecture: x86_64
Machine: amd64
>Description:

Running makefs(8) to create an FFS file system from small directory
tree (for example, an empty one), it prints the message "Filesystem
size 32 < minimum size of 40" and exits with a failure status.  Also,
the resulting image is not mountable.

You can work around this using the -M option, but you shouldn't have to.

>How-To-Repeat:

mkdir dir
makefs img dir

>Fix: