K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2020-04-20T13:47:07.537562Z
K 7
svn:log
V 177
Open device with O_RDONLY when command is non-invasive.

This allows to use some of the subcommands against mounted nvd devices.

MFC after:	1 week
Sponsored by:	iXystems, Inc.

END