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exports.5: Add a paragraph clarifying the use of "V4:"

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The exports.5 man page is a bit of a monster.
One place of common confusion is the use of
the "V4:" line(s) for defining the location of the
root of the NFSv4 export subtree.

This patch adds a paragraph in an attempt to
clarify this.

This is a content change.

Reviewed by:	kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D52141
This commit is contained in:
Rick Macklem 2025-08-25 18:38:54 -07:00
parent 4ba91e076e
commit 200730f29d
1 changed files with 14 additions and 1 deletions
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15
usr.sbin/mountd/exports.5
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@ -25,7 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd December 16, 2024
.Dd August 24, 2025
.Dt EXPORTS 5
.Os
.Sh NAME
@ -148,6 +148,19 @@ characters.
Mount points for a file system may appear on multiple lines each with
different sets of hosts and export options.
.Pp
Note that, for NFSv4 exporting, there must be both one or more ``V4:'' line(s)
and one or more line(s) exporting the file systems that are to be
exported to NFSv4 clients.
If there are multiple ``V4:'' lines, these lines must all specify the
same root directory path, but with different options for different
clients.
These line(s) do not export any file system, but simply define the
location of the ``root'' of the NFSv4 export subtree.
The line(s) exporting the file systems should always
specify the pathname of the root of a server file system
and must include at least one line exporting the file system
which is specified as the ``root'' by the ``V4:'' line(s).
.Pp
The second component of a line specifies how the file system is to be
exported to the host set.
The option flags specify whether the file system