[libvirt] [PATCHv2] libvirt: add daemon itself as shutdown reason

[John Ferlan]

From: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>

This patch introduces a new shutdown reason "daemon" in order
to indicate that the daemon needed to force shutdown the domain
as the best course of action to take at the moment.

This action would occur during reconnection when processing
encounters an error once the monitor reconnection is successful.

Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>
Reviewed-by: John Ferlan <jferlan at redhat.com>
---

 Since I hadn't seen a yay or nay on my last response related to
 changes - figured I'd post things as they are now just to make it
 easier to determine whether the changes made were acceptible
 This is essentially your original patch merged with my other
 changes and the removal of the qemu_process.c change.

 include/libvirt/libvirt-domain.h | 2 ++
 src/conf/domain_conf.c           | 3 ++-
 src/qemu/qemu_process.c          | 6 +++++-
 tools/virsh-domain-monitor.c     | 3 ++-
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index fdd2d6b8ea..71debd92b8 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -145,6 +145,8 @@ typedef enum {
     VIR_DOMAIN_SHUTOFF_FAILED = 6,      /* domain failed to start */
     VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT = 7, /* restored from a snapshot which was
                                            * taken while domain was shutoff */
+    VIR_DOMAIN_SHUTOFF_DAEMON = 8,      /* daemon decides to kill domain
+                                           during reconnection processing */
 # ifdef VIR_ENUM_SENTINELS
     VIR_DOMAIN_SHUTOFF_LAST
 # endif
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index e8e0adc819..b45f25fabb 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -779,7 +779,8 @@ VIR_ENUM_IMPL(virDomainShutoffReason, VIR_DOMAIN_SHUTOFF_LAST,
               "migrated",
               "saved",
               "failed",
-              "from snapshot")
+              "from snapshot",
+              "daemon")
 
 VIR_ENUM_IMPL(virDomainCrashedReason, VIR_DOMAIN_CRASHED_LAST,
               "unknown",
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 1850923914..59a94bb74a 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -7978,10 +7978,14 @@ qemuProcessReconnect(void *opaque)
          *
          * If we cannot get to the monitor when the QEMU command
          * line used -no-shutdown, then we can safely say that the
-         * domain crashed; otherwise, we don't really know. */
+         * domain crashed; otherwise, if the monitor was started,
+         * then we can blame ourselves, else we failed before the
+         * monitor started so we don't really know. */
         if (!priv->mon && tryMonReconn &&
             qemuDomainIsUsingNoShutdown(priv))
             state = VIR_DOMAIN_SHUTOFF_CRASHED;
+        else if (priv->mon)
+            state = VIR_DOMAIN_SHUTOFF_DAEMON;
         else
             state = VIR_DOMAIN_SHUTOFF_UNKNOWN;
 
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
index 3a2636377d..f0ad558f87 100644
--- a/tools/virsh-domain-monitor.c
+++ b/tools/virsh-domain-monitor.c
@@ -212,7 +212,8 @@ VIR_ENUM_IMPL(virshDomainShutoffReason,
               N_("migrated"),
               N_("saved"),
               N_("failed"),
-              N_("from snapshot"))
+              N_("from snapshot"),
+              N_("daemon"))
 
 VIR_ENUM_DECL(virshDomainCrashedReason)
 VIR_ENUM_IMPL(virshDomainCrashedReason,
-- 
2.17.2