Add, Delete Storage Pool commands should be able execute on a host in maintenance (apache#9301)

* Restart agent when host comes out of maintenance

* Don't send CreateStoragePoolCommand to hosts in maintenance mode

* CreateStoragePoolCommand can run when host in maintenance. Reverted the change to restart agent when host was already up and in maintenance

* Reverted changes done to ResourceManagerImplTest

Author: abh1sar

engine/components-api/src/main/java/com/cloud/resource/ResourceManager.java

@@ -126,6 +126,8 @@ public interface ResourceManager extends ResourceService, Configurable {
 
     public List<HostVO> listAllUpAndEnabledHostsInOneZoneByHypervisor(HypervisorType type, long dcId);
 
+    public List<HostVO> listAllUpHostsInOneZoneByHypervisor(HypervisorType type, long dcId);
+
     public List<HostVO> listAllUpAndEnabledHostsInOneZone(long dcId);
 
     public List<HostVO> listAllHostsInOneZoneByType(Host.Type type, long dcId);

engine/orchestration/src/main/java/com/cloud/agent/manager/AgentAttache.java

@@ -44,6 +44,8 @@
 import com.cloud.agent.api.CheckVirtualMachineCommand;
 import com.cloud.agent.api.CleanupNetworkRulesCmd;
 import com.cloud.agent.api.Command;
+import com.cloud.agent.api.CreateStoragePoolCommand;
+import com.cloud.agent.api.DeleteStoragePoolCommand;
 import com.cloud.agent.api.MaintainCommand;
 import com.cloud.agent.api.MigrateCommand;
 import com.cloud.agent.api.ModifySshKeysCommand;
@@ -119,8 +121,9 @@ public int compare(final Object o1, final Object o2) {
         StopCommand.class.toString(), CheckVirtualMachineCommand.class.toString(), PingTestCommand.class.toString(), CheckHealthCommand.class.toString(),
         ReadyCommand.class.toString(), ShutdownCommand.class.toString(), SetupCommand.class.toString(),
         CleanupNetworkRulesCmd.class.toString(), CheckNetworkCommand.class.toString(), PvlanSetupCommand.class.toString(), CheckOnHostCommand.class.toString(),
-        ModifyTargetsCommand.class.toString(), ModifySshKeysCommand.class.toString(), ModifyStoragePoolCommand.class.toString(), SetupMSListCommand.class.toString(), RollingMaintenanceCommand.class.toString(),
-            CleanupPersistentNetworkResourceCommand.class.toString()};
+        ModifyTargetsCommand.class.toString(), ModifySshKeysCommand.class.toString(),
+        CreateStoragePoolCommand.class.toString(), DeleteStoragePoolCommand.class.toString(), ModifyStoragePoolCommand.class.toString(),
+        SetupMSListCommand.class.toString(), RollingMaintenanceCommand.class.toString(), CleanupPersistentNetworkResourceCommand.class.toString()};
     protected final static String[] s_commandsNotAllowedInConnectingMode = new String[] { StartCommand.class.toString(), CreateCommand.class.toString() };
     static {
         Arrays.sort(s_commandsAllowedInMaintenanceMode);

plugins/storage/volume/default/src/main/java/org/apache/cloudstack/storage/datastore/lifecycle/CloudStackPrimaryDataStoreLifeCycleImpl.java

@@ -467,7 +467,7 @@ public boolean attachCluster(DataStore store, ClusterScope scope) {
 
     @Override
     public boolean attachZone(DataStore dataStore, ZoneScope scope, HypervisorType hypervisorType) {
-        List<HostVO> hosts = _resourceMgr.listAllUpAndEnabledHostsInOneZoneByHypervisor(hypervisorType, scope.getScopeId());
+        List<HostVO> hosts = _resourceMgr.listAllUpHostsInOneZoneByHypervisor(hypervisorType, scope.getScopeId());
         s_logger.debug("In createPool. Attaching the pool to each of the hosts.");
         List<HostVO> poolHosts = new ArrayList<HostVO>();
         for (HostVO host : hosts) {

server/src/main/java/com/cloud/resource/ResourceManagerImpl.java

@@ -3255,6 +3255,15 @@ public List<HostVO> listAllUpAndEnabledHostsInOneZoneByHypervisor(final Hypervis
         return sc.list();
     }
 
+    @Override
+    public List<HostVO> listAllUpHostsInOneZoneByHypervisor(final HypervisorType type, final long dcId) {
+        final QueryBuilder<HostVO> sc = QueryBuilder.create(HostVO.class);
+        sc.and(sc.entity().getHypervisorType(), Op.EQ, type);
+        sc.and(sc.entity().getDataCenterId(), Op.EQ, dcId);
+        sc.and(sc.entity().getStatus(), Op.EQ, Status.Up);
+        return sc.list();
+    }
+
     @Override
     public List<HostVO> listAllUpAndEnabledHostsInOneZone(final long dcId) {
         final QueryBuilder<HostVO> sc = QueryBuilder.create(HostVO.class);

server/src/test/java/com/cloud/resource/MockResourceManagerImpl.java

@@ -588,6 +588,12 @@ public List<HostVO> listAllUpAndEnabledHostsInOneZoneByHypervisor(final Hypervis
         return null;
     }
 
+    @Override
+    public List<HostVO> listAllUpHostsInOneZoneByHypervisor(final HypervisorType type, final long dcId) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
     @Override
     public List<HostVO> listAllUpAndEnabledHostsInOneZone(final long dcId) {
         // TODO Auto-generated method stub