4:22 p.m.
The man page states that with --config the next boot is affected. This
can be understood as if _only_ the next boot was affected. This isn't
true if the machine is running.
This patch adds the full --live, --config, --current infrastructure and
tweaks stuff to correctly support the obsolete --persistent flag.
---
Notes:
Version 2:
- note in the docs that semantics of the flags were fixed
tools/virsh-domain.c | 40 +++++++++++++++++++++++++++++-----------
tools/virsh.pod | 24 +++++++++++++++++-------
2 files changed, 46 insertions(+), 18 deletions(-)
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index fa5ab3d..2a228f5 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -9246,13 +9246,21 @@ static const vshCmdOptDef opts_update_device[] = {
.help = N_("XML file")
},
{.name = "persistent",
- .type = VSH_OT_ALIAS,
- .help = "config"
+ .type = VSH_OT_BOOL,
+ .help = N_("make live change persistent")
},
{.name = "config",
.type = VSH_OT_BOOL,
.help = N_("affect next boot")
},
+ {.name = "live",
+ .type = VSH_OT_BOOL,
+ .help = N_("affect running domain")
+ },
+ {.name = "current",
+ .type = VSH_OT_BOOL,
+ .help = N_("affect current domain")
+ },
{.name = "force",
.type = VSH_OT_BOOL,
.help = N_("force device update")
@@ -9267,7 +9275,21 @@ cmdUpdateDevice(vshControl *ctl, const vshCmd *cmd)
const char *from = NULL;
char *buffer = NULL;
bool ret = false;
- unsigned int flags;
+ unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT;
+ bool current = vshCommandOptBool(cmd, "current");
+ bool config = vshCommandOptBool(cmd, "config");
+ bool live = vshCommandOptBool(cmd, "live");
+ bool persistent = vshCommandOptBool(cmd, "persistent");
+
+ VSH_EXCLUSIVE_OPTIONS_VAR(persistent, current);
+
+ VSH_EXCLUSIVE_OPTIONS_VAR(current, live);
+ VSH_EXCLUSIVE_OPTIONS_VAR(current, config);
+
+ if (config || persistent)
+ flags |= VIR_DOMAIN_AFFECT_CONFIG;
+ if (live)
+ flags |= VIR_DOMAIN_AFFECT_LIVE;
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
return false;
@@ -9275,19 +9297,15 @@ cmdUpdateDevice(vshControl *ctl, const vshCmd *cmd)
if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
goto cleanup;
+ if (persistent &&
+ virDomainIsActive(dom) == 1)
+ flags |= VIR_DOMAIN_AFFECT_LIVE;
+
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
vshReportError(ctl);
goto cleanup;
}
- if (vshCommandOptBool(cmd, "config")) {
- flags = VIR_DOMAIN_AFFECT_CONFIG;
- if (virDomainIsActive(dom) == 1)
- flags |= VIR_DOMAIN_AFFECT_LIVE;
- } else {
- flags = VIR_DOMAIN_AFFECT_LIVE;
- }
-
if (vshCommandOptBool(cmd, "force"))
flags |= VIR_DOMAIN_DEVICE_MODIFY_FORCE;
diff --git a/tools/virsh.pod b/tools/virsh.pod
index e7e82e3..04ea542 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1888,18 +1888,28 @@ If I<--config> is specified, alter persistent configuration,
effect observed
on next boot, for compatibility purposes, I<--persistent> is alias of
I<--config>.
-=item B<update-device> I<domain> I<file> [I<--config>]
[I<--force>]
+=item B<update-device> I<domain> I<file> [I<--force>]
+[[[I<--live>] [I<--config>] | [I<--current>]] |
[I<--persistent>]]
Update the characteristics of a device associated with I<domain>,
-based on the device definition in an XML I<file>. If the I<--config>
-option is used, the changes will take affect the next time libvirt
-starts the domain. For compatibility purposes, I<--persistent> is
-alias of I<--config>. The I<--force> option can be used to force
-device update, e.g., to eject a CD-ROM even if it is locked/mounted in
-the domain. See the documentation at
+based on the device definition in an XML I<file>. The I<--force> option
+can be used to force device update, e.g., to eject a CD-ROM even if it is
+locked/mounted in the domain. See the documentation at
L<http://libvirt.org/formatdomain.html#elementsDevices> to learn about
libvirt XML format for a device.
+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.
+Both I<--live> and I<--config> flags may be given, but I<--current> is
+exclusive. Not specifying any flag is the same as specifying I<--current>.
+
+For compatibility purposes, I<--persistent> behaves like I<--config> for
+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>.
+
=item B<change-media> I<domain> I<path> [I<--eject>]
[I<--insert>]
[I<--update>] [I<source>] [I<--force>] [[I<--live>]
[I<--config>] | [I<--current>]]
--
1.8.1.5