virsh: Document that using incomplete XML files may have unexpected results

Explicitly state that using incomplete XML definition snippets for hot-management
commands may have unexpected results due to autogenerating values for some of
the fields if they aren't specified explicitly.

diff --git a/tools/virsh.pod b/tools/virsh.pod
index 1510d0d1dc40a124db8ace5e021ae59c6158732a..11984bcb05eb631cd677501296782dcbd68799c2 100644 (file)
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1824,6 +1824,10 @@ within an existing device; consider using B<update-device> for this
 usage.  For passthrough host devices, see also B<nodedev-detach>,
 needed if the device does not use managed mode.
 
+B<Note>: using of partial device definition XML files may lead to unexpected
+results as some fields may be autogenerated and thus match devices other than
+expected.
+
 =item B<attach-disk> I<domain> I<source> I<target>
 [I<--driver driver>] [I<--subdriver subdriver>] [I<--cache cache>]
 [I<--type type>] [I<--mode mode>] [I<--config>] [I<--sourcetype soucetype>]
@@ -1893,6 +1897,10 @@ as command B<attach-device>.
 For passthrough host devices, see also B<nodedev-reattach>, needed if
 the device does not use managed mode.
 
+B<Note>: using of partial device definition XML files may lead to unexpected
+results as some fields may be autogenerated and thus match devices other than
+expected.
+
 If I<--live> is specified, affect a running domain.
 If I<--config> is specified, affect the next startup of a persistent domain.
 If I<--current> is specified, affect the current domain state.
@@ -1969,6 +1977,10 @@ an offline domain, and like I<--live> I<--config> for a running domain.
 Note that older versions of virsh used I<--config> as an alias for
 I<--persistent>.
 
+B<Note>: using of partial device definition XML files may lead to unexpected
+results as some fields may be autogenerated and thus match devices other than
+expected.
+
 =item B<change-media> I<domain> I<path> [I<--eject>] [I<--insert>]
 [I<--update>] [I<source>] [I<--force>] [[I<--live>] [I<--config>] | [I<--current>]]