git: d63104d253e2 - main - Add information on how to load gmirror on boot to auto activate mirrors

The branch main has been updated by bcr (doc committer):

URL: https://cgit.FreeBSD.org/src/commit/?id=d63104d253e284964a2e7994553594b5b04422a3

commit d63104d253e284964a2e7994553594b5b04422a3
Author:     Benedict Reuschling <bcr@FreeBSD.org>
AuthorDate: 2022-10-05 16:44:31 +0000
Commit:     Benedict Reuschling <bcr@FreeBSD.org>
CommitDate: 2022-10-05 16:44:31 +0000

    Add information on how to load gmirror on boot to auto activate mirrors
    
    PR:                     234997
    Reported by:            Michiel van Baak <michiel@vanbaak.eu>
    Event:                  Aberdeen Hackathon 2022
    Differential Revision:  https://reviews.freebsd.org/D20577
---
 lib/geom/mirror/gmirror.8 | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/lib/geom/mirror/gmirror.8 b/lib/geom/mirror/gmirror.8
index 44ea08bcf65b..c7d2b0e0e7ac 100644
--- a/lib/geom/mirror/gmirror.8
+++ b/lib/geom/mirror/gmirror.8
@@ -24,13 +24,29 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 21, 2022
+.Dd October 5, 2022
 .Dt GMIRROR 8
 .Os
 .Sh NAME
 .Nm gmirror
 .Nd "control utility for mirrored devices"
 .Sh SYNOPSIS
+To compile GEOM_MIRROR into your kernel, add the following lines to your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "options GEOM_MIRROR"
+.Ed
+.Pp
+Alternatively, to load the GEOM_MIRROR module at boot time, add the following
+line to your
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+geom_mirror_load="YES"
+.Ed
+.Pp
+.No Usage of the Nm
+utility:
+.Pp
 .Nm
 .Cm label
 .Op Fl Fhnv