describe what qcow2 is, in sufficient simple terms

diff --git a/usr.sbin/vmd/vm.conf.5 b/usr.sbin/vmd/vm.conf.5
index 13c0758..c99c260 100644 (file)
--- a/usr.sbin/vmd/vm.conf.5
+++ b/usr.sbin/vmd/vm.conf.5
@@ -1,4 +1,4 @@
-.\" $OpenBSD: vm.conf.5,v 1.61 2022/10/14 06:43:26 jmc Exp $
+.\" $OpenBSD: vm.conf.5,v 1.62 2023/02/19 17:10:38 deraadt Exp $
 .\"
 .\" Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org>
 .\" Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: October 14 2022 $
+.Dd $Mdocdate: February 19 2023 $
 .Dt VM.CONF 5
 .Os
 .Sh NAME
@@ -217,7 +217,7 @@ Do not start this VM.
 Disk image file (may be specified multiple times to add multiple disk images).
 The format may be specified as either
 .Cm qcow2
-or
+(a sparse file format which reduces storage) or
 .Cm raw .
 If left unspecified, the format defaults to
 .Cm raw