[pve-devel] [PATCH v2 ha-manager] Resource/API: abort early if resource in error state

[Thomas Lamprecht]

If a service is in error state the single state change command that
can make sense is setting the disabled request state.
Thus abort on all other commands early to enhance user experience.
---

changes since v1:
* factored out the error check in a function

 src/PVE/API2/HA/Resources.pm | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/PVE/API2/HA/Resources.pm b/src/PVE/API2/HA/Resources.pm
index 621c9e6..d57824b 100644
--- a/src/PVE/API2/HA/Resources.pm
+++ b/src/PVE/API2/HA/Resources.pm
@@ -34,6 +34,18 @@ my $api_copy_config = sub {
     return $scfg;
 };
 
+sub check_service_state {
+    my ($sid, $req_state) = @_;
+
+    my $service_status = PVE::HA::Config::get_service_status($sid);
+    if ($service_status->{managed} && $service_status->{state} eq 'error') {
+	# service in error state, must get disabled before new state request
+	# can be executed
+	return if defined($req_state) && $req_state eq 'disabled';
+	die "service '$sid' in error state, must be disabled and fixed first\n";
+    }
+}
+
 __PACKAGE__->register_method ({
     name => 'index',
     path => '',
@@ -187,6 +199,8 @@ __PACKAGE__->register_method ({
 		if !$group_cfg->{ids}->{$group};
 	}
 
+	check_service_state($sid, $param->{state});
+
 	PVE::HA::Config::lock_ha_domain(
 	    sub {
 
@@ -288,6 +302,8 @@ __PACKAGE__->register_method ({
 
 	PVE::HA::Config::service_is_ha_managed($sid);
 
+	check_service_state($sid);
+
 	PVE::HA::Config::queue_crm_commands("migrate $sid $param->{node}");
 	    
 	return undef;
@@ -319,6 +335,8 @@ __PACKAGE__->register_method ({
 
 	PVE::HA::Config::service_is_ha_managed($sid);
 
+	check_service_state($sid);
+
 	PVE::HA::Config::queue_crm_commands("relocate $sid $param->{node}");
 	    
 	return undef;
-- 
2.1.4