[PATCH 26/26] hypervisor: send systemd status messages while saving

[Daniel P. Berrangé <berrange@xxxxxxxxxx>]

Since processing running VMs on OS shutdown can take a while, it is
beneficial to send systemd status messages about the progress.

Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
---
 src/hypervisor/domain_driver.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/hypervisor/domain_driver.c b/src/hypervisor/domain_driver.c
index 2f89b8c841..421cc16574 100644
--- a/src/hypervisor/domain_driver.c
+++ b/src/hypervisor/domain_driver.c
@@ -30,6 +30,7 @@
 #include "datatypes.h"
 #include "driver.h"
 #include "virlog.h"
+#include "virsystemd.h"
 
 #define VIR_FROM_THIS VIR_FROM_DOMAIN
 
@@ -791,6 +792,8 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
                 (!transient[i] && cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
                 continue;
 
+            virSystemdNotifyStatus("Suspending '%s' (%zu of %d)",
+                                   virDomainGetName(domains[i]), i + 1, numDomains);
             /*
              * Pause all VMs to make them stop dirtying pages,
              * so save is quicker. We remember if any VMs were
@@ -808,6 +811,9 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
         }
 
         for (i = 0; i < numDomains; i++) {
+            virSystemdNotifyStatus("Saving '%s' (%zu of %d)",
+                                   virDomainGetName(domains[i]), i + 1, numDomains);
+
             if (virDomainManagedSave(domains[i], flags[i]) < 0) {
                 VIR_WARN("Unable to perform managed save of '%s': %s",
                          virDomainGetName(domains[i]),
@@ -829,6 +835,9 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
                 (!transient[i] && cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
                 continue;
 
+            virSystemdNotifyStatus("Shutting down '%s' (%zu of %d)",
+                                   virDomainGetName(domains[i]), i + 1, numDomains);
+
             if (virDomainShutdown(domains[i]) < 0) {
                 VIR_WARN("Unable to perform graceful shutdown of '%s': %s",
                          virDomainGetName(domains[i]),
@@ -838,6 +847,8 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
         }
 
         timer = g_timer_new();
+        virSystemdNotifyStatus("Waiting %d secs for VM shutdown completion",
+                               cfg->waitShutdownSecs);
         while (1) {
             bool anyRunning = false;
             for (i = 0; i < numDomains; i++) {
@@ -874,10 +885,14 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
                 (!transient[i] && cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
                 continue;
 
+            virSystemdNotifyStatus("Destroying '%s' (%zu of %d)",
+                                   virDomainGetName(domains[i]), i + 1, numDomains);
             virDomainDestroy(domains[i]);
         }
     }
 
+    virSystemdNotifyStatus("Processed %d domains", numDomains);
+
  cleanup:
     if (domains) {
         for (i = 0; i < numDomains; i++) {
-- 
2.47.1