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From alena1...@apache.org
Subject git commit: updated refs/heads/master to d66e9c7
Date Wed, 19 Jun 2013 17:13:06 GMT
Updated Branches:
  refs/heads/master 5140473f2 -> d66e9c7b5


CLOUDSTACK-2843: Provideded an ability to turn off the synchronization being done on the CS agent side,
 for number of commands participating in Vm deployment process, as parallel deployment is supported on the hypervisor side.
The behavior is controlled by global config varirables:

"execute.in.sequence.hypervisor.commands" (false by default) sets/resets the synchronization for commands:
=========================
StartCommand
StopCommand
CreateCommand
CopyVolumeCommand

"execute.in.sequence.network.element.commands" (false by default) sets/resets the synchronization for commands:
==========================
DhcpEntryCommand
SavePasswordCommand
UserDataCommand
VmDataCommand

As a part of the fix, increased the global lock timeout to 30 mins in several VR scripts:
===========================
edithosts.sh
savepassword.sh
userdata.sh

to support situations when multiple concurrent calls to the script are being made.


Project: http://git-wip-us.apache.org/repos/asf/cloudstack/repo
Commit: http://git-wip-us.apache.org/repos/asf/cloudstack/commit/d66e9c7b
Tree: http://git-wip-us.apache.org/repos/asf/cloudstack/tree/d66e9c7b
Diff: http://git-wip-us.apache.org/repos/asf/cloudstack/diff/d66e9c7b

Branch: refs/heads/master
Commit: d66e9c7b518895c28461118523698b6a7f0fd830
Parents: 5140473
Author: Alena Prokharchyk <alena.prokharchyk@citrix.com>
Authored: Tue Jun 18 14:56:07 2013 -0700
Committer: Alena Prokharchyk <alena.prokharchyk@citrix.com>
Committed: Wed Jun 19 10:12:13 2013 -0700

----------------------------------------------------------------------
 api/src/com/cloud/network/NetworkModel.java     |  2 ++
 core/src/com/cloud/agent/api/StartCommand.java  | 10 +++---
 core/src/com/cloud/agent/api/StopCommand.java   | 15 ++++++---
 .../agent/api/routing/DhcpEntryCommand.java     | 10 +++---
 .../agent/api/routing/SavePasswordCommand.java  |  6 ++--
 .../agent/api/routing/UserDataCommand.java      |  6 ++--
 .../cloud/agent/api/routing/VmDataCommand.java  | 10 +++---
 .../agent/api/storage/CopyVolumeCommand.java    |  6 ++--
 .../cloud/agent/api/storage/CreateCommand.java  | 32 +++++++++++---------
 .../motion/AncientDataMotionStrategy.java       | 18 +++++++----
 .../systemvm/debian/config/root/edithosts.sh    |  4 ++-
 .../systemvm/debian/config/root/savepassword.sh |  4 ++-
 patches/systemvm/debian/config/root/userdata.sh |  4 ++-
 .../BaremetalDhcpManagerImpl.java               |  5 ++-
 .../networkservice/BaremetalPxeManagerImpl.java |  4 ++-
 .../CloudStackPrimaryDataStoreDriverImpl.java   | 10 +++---
 server/src/com/cloud/configuration/Config.java  |  8 +++--
 .../src/com/cloud/network/NetworkManager.java   |  1 +
 .../com/cloud/network/NetworkManagerImpl.java   |  4 +--
 .../src/com/cloud/network/NetworkModelImpl.java | 11 +++++++
 .../element/CloudZonesNetworkElement.java       |  4 +--
 .../VirtualNetworkApplianceManagerImpl.java     |  7 +++--
 .../src/com/cloud/server/ManagementServer.java  |  2 ++
 .../com/cloud/server/ManagementServerImpl.java  | 14 +++++++--
 .../com/cloud/vm/VirtualMachineManagerImpl.java | 15 +++++----
 .../com/cloud/network/MockNetworkModelImpl.java |  6 ++++
 .../com/cloud/vpc/MockNetworkModelImpl.java     |  6 ++++
 setup/db/db/schema-410to420.sql                 |  4 +++
 28 files changed, 155 insertions(+), 73 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/api/src/com/cloud/network/NetworkModel.java
----------------------------------------------------------------------
diff --git a/api/src/com/cloud/network/NetworkModel.java b/api/src/com/cloud/network/NetworkModel.java
index 05307eb..ea39d83 100644
--- a/api/src/com/cloud/network/NetworkModel.java
+++ b/api/src/com/cloud/network/NetworkModel.java
@@ -274,4 +274,6 @@ public interface NetworkModel {
     Networks.IsolationType[] listNetworkIsolationMethods();
 
     Nic getNicInNetworkIncludingRemoved(long vmId, long networkId);
+
+    boolean getExecuteInSeqNtwkElmtCmd();
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/StartCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/StartCommand.java b/core/src/com/cloud/agent/api/StartCommand.java
index ec707d6..308730a 100644
--- a/core/src/com/cloud/agent/api/StartCommand.java
+++ b/core/src/com/cloud/agent/api/StartCommand.java
@@ -24,6 +24,7 @@ import com.cloud.host.Host;
 public class StartCommand extends Command {
     VirtualMachineTO vm;
     String hostIp;
+    boolean executeInSequence = false;
 
     public VirtualMachineTO getVirtualMachine() {
         return vm;
@@ -31,19 +32,16 @@ public class StartCommand extends Command {
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
     protected StartCommand() {
     }
 
-    public StartCommand(VirtualMachineTO vm) {
-        this.vm = vm;
-    }
-
-    public StartCommand(VirtualMachineTO vm, Host host) {
+    public StartCommand(VirtualMachineTO vm, Host host, boolean executeInSequence) {
         this.vm = vm;
         this.hostIp = host.getPrivateIpAddress();
+        this.executeInSequence = executeInSequence;
     }
 
     public String getHostIp() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/StopCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/StopCommand.java b/core/src/com/cloud/agent/api/StopCommand.java
index 1c67f38..a3ee3c9 100755
--- a/core/src/com/cloud/agent/api/StopCommand.java
+++ b/core/src/com/cloud/agent/api/StopCommand.java
@@ -23,28 +23,33 @@ public class StopCommand extends RebootCommand {
     private boolean isProxy=false;
     private String urlPort=null;
     private String publicConsoleProxyIpAddress=null;
+    boolean executeInSequence = false;
 
     protected StopCommand() {
     }
 
-    public StopCommand(VirtualMachine vm, boolean isProxy, String urlPort, String publicConsoleProxyIpAddress) {
+    public StopCommand(VirtualMachine vm, boolean isProxy, String urlPort, String publicConsoleProxyIpAddress, boolean executeInSequence) {
     	super(vm);
     	this.isProxy = isProxy;
     	this.urlPort = urlPort;
     	this.publicConsoleProxyIpAddress = publicConsoleProxyIpAddress;
+    	this.executeInSequence = executeInSequence;
     }
 
-    public StopCommand(VirtualMachine vm, String vnet) {
+    public StopCommand(VirtualMachine vm, String vnet, boolean executeInSequence) {
         super(vm);
         this.vnet = vnet;
+        this.executeInSequence = executeInSequence;
     }
     
-    public StopCommand(VirtualMachine vm) {
+    public StopCommand(VirtualMachine vm, boolean executeInSequence) {
         super(vm);
+        this.executeInSequence = executeInSequence;
     }
 
-    public StopCommand(String vmName) {
+    public StopCommand(String vmName, boolean executeInSequence) {
         super(vmName);
+        this.executeInSequence = executeInSequence;
     }
 
     public String getVnet() {
@@ -53,7 +58,7 @@ public class StopCommand extends RebootCommand {
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
 	public boolean isProxy() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/routing/DhcpEntryCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/routing/DhcpEntryCommand.java b/core/src/com/cloud/agent/api/routing/DhcpEntryCommand.java
index fd8d84c..d51ea5e 100644
--- a/core/src/com/cloud/agent/api/routing/DhcpEntryCommand.java
+++ b/core/src/com/cloud/agent/api/routing/DhcpEntryCommand.java
@@ -32,6 +32,7 @@ public class DhcpEntryCommand extends NetworkElementCommand {
     String ip6Gateway;
     String duid;
     private boolean isDefault;
+    boolean executeInSequence = false;
 
     protected DhcpEntryCommand() {
 
@@ -39,19 +40,20 @@ public class DhcpEntryCommand extends NetworkElementCommand {
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
-    public DhcpEntryCommand(String vmMac, String vmIpAddress, String vmName, String vmIp6Address) {
+    public DhcpEntryCommand(String vmMac, String vmIpAddress, String vmName, String vmIp6Address, boolean executeInSequence) {
         this.vmMac = vmMac;
         this.vmIpAddress = vmIpAddress;
         this.vmName = vmName;
         this.vmIp6Address = vmIp6Address;
         this.setDefault(true);
+        this.executeInSequence = executeInSequence;
     }
 
-    public DhcpEntryCommand(String vmMac, String vmIpAddress, String vmName, String vmIp6Address, String dns, String gateway, String ip6Gateway) {
-        this(vmMac, vmIpAddress, vmName, vmIp6Address);
+    public DhcpEntryCommand(String vmMac, String vmIpAddress, String vmName, String vmIp6Address, String dns, String gateway, String ip6Gateway, boolean executeInSequence) {
+        this(vmMac, vmIpAddress, vmName, vmIp6Address, executeInSequence);
         this.dns = dns;
         this.gateway = gateway;
     }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/routing/SavePasswordCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/routing/SavePasswordCommand.java b/core/src/com/cloud/agent/api/routing/SavePasswordCommand.java
index 6dac148..c77dbf6 100644
--- a/core/src/com/cloud/agent/api/routing/SavePasswordCommand.java
+++ b/core/src/com/cloud/agent/api/routing/SavePasswordCommand.java
@@ -22,19 +22,21 @@ public class SavePasswordCommand extends NetworkElementCommand {
     String password;
     String vmIpAddress;
     String vmName;
+    boolean executeInSequence = false;
 
     protected SavePasswordCommand() {
     }
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
-    public SavePasswordCommand(String password, String vmIpAddress, String vmName) {
+    public SavePasswordCommand(String password, String vmIpAddress, String vmName, boolean executeInSequence) {
         this.password = password;
         this.vmIpAddress = vmIpAddress;
         this.vmName = vmName;
+        this.executeInSequence = executeInSequence;
     }
 
 	public String getPassword() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/routing/UserDataCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/routing/UserDataCommand.java b/core/src/com/cloud/agent/api/routing/UserDataCommand.java
index f7b38c8..cf36002 100644
--- a/core/src/com/cloud/agent/api/routing/UserDataCommand.java
+++ b/core/src/com/cloud/agent/api/routing/UserDataCommand.java
@@ -23,6 +23,7 @@ public class UserDataCommand extends NetworkElementCommand {
     String vmIpAddress;
     String routerPrivateIpAddress;
     String vmName;
+    boolean executeInSequence = false;
 
     protected UserDataCommand() {
 
@@ -30,14 +31,15 @@ public class UserDataCommand extends NetworkElementCommand {
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
-    public UserDataCommand(String userData, String vmIpAddress, String routerPrivateIpAddress, String vmName) {
+    public UserDataCommand(String userData, String vmIpAddress, String routerPrivateIpAddress, String vmName, boolean executeInSequence) {
         this.userData = userData;
         this.vmIpAddress = vmIpAddress;
         this.routerPrivateIpAddress = routerPrivateIpAddress;
         this.vmName = vmName;
+        this.executeInSequence = executeInSequence;
     }
 
 	public String getRouterPrivateIpAddress() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/routing/VmDataCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/routing/VmDataCommand.java b/core/src/com/cloud/agent/api/routing/VmDataCommand.java
index df88255..861f700 100644
--- a/core/src/com/cloud/agent/api/routing/VmDataCommand.java
+++ b/core/src/com/cloud/agent/api/routing/VmDataCommand.java
@@ -28,27 +28,29 @@ public class VmDataCommand extends NetworkElementCommand {
 	String vmName;
 	@LogLevel(Log4jLevel.Trace)
 	List<String[]> vmData;
+	boolean executeInSequence = false;
 
     protected VmDataCommand() {
     }
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
-    public VmDataCommand(String vmIpAddress) {
-    	this(vmIpAddress, null);
+    public VmDataCommand(String vmIpAddress, boolean executeInSequence) {
+    	this(vmIpAddress, null, executeInSequence);
     }
 
     public String getVmName() {
         return vmName;
     }
 
-    public VmDataCommand(String vmIpAddress, String vmName) {
+    public VmDataCommand(String vmIpAddress, String vmName, boolean executeInSequence) {
         this.vmName = vmName;
         this.vmIpAddress = vmIpAddress;
         this.vmData = new ArrayList<String[]>();
+        this.executeInSequence = executeInSequence;
     }
 
 

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/storage/CopyVolumeCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/storage/CopyVolumeCommand.java b/core/src/com/cloud/agent/api/storage/CopyVolumeCommand.java
index 3d05e9b..1acf2cc 100644
--- a/core/src/com/cloud/agent/api/storage/CopyVolumeCommand.java
+++ b/core/src/com/cloud/agent/api/storage/CopyVolumeCommand.java
@@ -28,22 +28,24 @@ public class CopyVolumeCommand extends Command {
 	String secondaryStorageURL;
 	boolean toSecondaryStorage;
 	String vmName;
+	boolean executeInSequence = false;
 
 	public CopyVolumeCommand() {
 	}
 
-	public CopyVolumeCommand(long volumeId, String volumePath, StoragePool pool, String secondaryStorageURL, boolean toSecondaryStorage, int wait) {
+	public CopyVolumeCommand(long volumeId, String volumePath, StoragePool pool, String secondaryStorageURL, boolean toSecondaryStorage, int wait, boolean executeInSequence) {
 		this.volumeId = volumeId;
 		this.volumePath = volumePath;
 		this.pool = new StorageFilerTO(pool);
 		this.secondaryStorageURL = secondaryStorageURL;
 		this.toSecondaryStorage = toSecondaryStorage;
 		setWait(wait);
+		this.executeInSequence = executeInSequence;
 	}
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
 	public String getVolumePath() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/core/src/com/cloud/agent/api/storage/CreateCommand.java
----------------------------------------------------------------------
diff --git a/core/src/com/cloud/agent/api/storage/CreateCommand.java b/core/src/com/cloud/agent/api/storage/CreateCommand.java
index fd0375a..900abfd 100644
--- a/core/src/com/cloud/agent/api/storage/CreateCommand.java
+++ b/core/src/com/cloud/agent/api/storage/CreateCommand.java
@@ -26,6 +26,7 @@ public class CreateCommand extends Command {
     private StorageFilerTO pool;
     private DiskProfile diskCharacteristics;
     private String templateUrl;
+    boolean executeInSequence = false; 
 
     protected CreateCommand() {
         super();
@@ -33,44 +34,47 @@ public class CreateCommand extends Command {
 
     /**
      * Construction for template based volumes.
-     *
-     * @param vol
-     * @param vm
      * @param diskCharacteristics
      * @param templateUrl
      * @param pool
+     * @param executeInSequence TODO
+     * @param vol
+     * @param vm
      */
-    public CreateCommand(DiskProfile diskCharacteristics, String templateUrl, StorageFilerTO pool) {
-        this(diskCharacteristics, pool);
+    public CreateCommand(DiskProfile diskCharacteristics, String templateUrl, StorageFilerTO pool, boolean executeInSequence) {
+        this(diskCharacteristics, pool, executeInSequence);
         this.templateUrl = templateUrl;
+        this.executeInSequence = executeInSequence;
     }
 
     /**
      * Construction for regular volumes.
-     *
-     * @param vol
-     * @param vm
      * @param diskCharacteristics
      * @param pool
+     * @param executeInSequence TODO
+     * @param vol
+     * @param vm
      */
-    public CreateCommand(DiskProfile diskCharacteristics, StorageFilerTO pool) {
+    public CreateCommand(DiskProfile diskCharacteristics, StorageFilerTO pool, boolean executeInSequence) {
         this.volId = diskCharacteristics.getVolumeId();
         this.diskCharacteristics = diskCharacteristics;
         this.pool = pool;
         this.templateUrl = null;
+        this.executeInSequence = executeInSequence;
     }
 
-    public CreateCommand(DiskProfile diskCharacteristics, String templateUrl, StoragePool pool) {
-        this(diskCharacteristics, templateUrl, new StorageFilerTO(pool));
+    public CreateCommand(DiskProfile diskCharacteristics, String templateUrl, StoragePool pool, boolean executeInSequence) {
+        this(diskCharacteristics, templateUrl, new StorageFilerTO(pool), executeInSequence);
     }
 
-    public CreateCommand(DiskProfile diskCharacteristics, StoragePool pool) {
-        this(diskCharacteristics, new StorageFilerTO(pool));
+    public CreateCommand(DiskProfile diskCharacteristics, StoragePool pool, boolean executeInSequence) {
+        this(diskCharacteristics, new StorageFilerTO(pool), executeInSequence);
+        this.executeInSequence = executeInSequence;
     }
 
     @Override
     public boolean executeInSequence() {
-        return true;
+        return executeInSequence;
     }
 
     public String getTemplateUrl() {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/engine/storage/src/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java
----------------------------------------------------------------------
diff --git a/engine/storage/src/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java b/engine/storage/src/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java
index a6880c3..cb7940e 100644
--- a/engine/storage/src/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java
+++ b/engine/storage/src/org/apache/cloudstack/storage/motion/AncientDataMotionStrategy.java
@@ -50,11 +50,11 @@ import com.cloud.agent.api.CreateVolumeFromSnapshotCommand;
 import com.cloud.agent.api.UpgradeSnapshotCommand;
 import com.cloud.agent.api.storage.CopyVolumeAnswer;
 import com.cloud.agent.api.storage.CopyVolumeCommand;
-import com.cloud.agent.api.storage.MigrateVolumeAnswer;
-import com.cloud.agent.api.storage.MigrateVolumeCommand;
 import com.cloud.agent.api.storage.CreateAnswer;
 import com.cloud.agent.api.storage.CreateCommand;
 import com.cloud.agent.api.storage.CreatePrivateTemplateAnswer;
+import com.cloud.agent.api.storage.MigrateVolumeAnswer;
+import com.cloud.agent.api.storage.MigrateVolumeCommand;
 import com.cloud.agent.api.to.S3TO;
 import com.cloud.agent.api.to.StorageFilerTO;
 import com.cloud.agent.api.to.SwiftTO;
@@ -67,6 +67,7 @@ import com.cloud.exception.StorageUnavailableException;
 import com.cloud.host.Host;
 import com.cloud.host.HostVO;
 import com.cloud.host.dao.HostDao;
+import com.cloud.server.ManagementServer;
 import com.cloud.storage.DiskOfferingVO;
 import com.cloud.storage.SnapshotVO;
 import com.cloud.storage.Storage.ImageFormat;
@@ -138,6 +139,11 @@ public class AncientDataMotionStrategy implements DataMotionStrategy {
     private SwiftManager _swiftMgr;
     @Inject 
     private S3Manager _s3Mgr;
+    @Inject
+    private ManagementServer _mgmtServer;
+    
+    protected boolean _executeInSequence;
+
 
     @Override
     public boolean canHandle(DataObject srcData, DataObject destData) {
@@ -165,7 +171,7 @@ public class AncientDataMotionStrategy implements DataMotionStrategy {
         StoragePool destPool = (StoragePool) destData.getDataStore();
         CopyVolumeCommand cvCmd = new CopyVolumeCommand(srcData.getId(),
                 volumeUUID, destPool, secondaryStorageURL, false,
-                _copyvolumewait);
+                _copyvolumewait, _mgmtServer.getExecuteInSequence());
         CopyVolumeAnswer cvAnswer = null;
         String errMsg = null;
         try {
@@ -321,7 +327,7 @@ public class AncientDataMotionStrategy implements DataMotionStrategy {
                 null);
         CreateCommand cmd = new CreateCommand(diskProfile,
                 tmpltStoredOn.getLocalDownloadPath(),
-                new StorageFilerTO((StoragePool)template.getDataStore()));
+                new StorageFilerTO((StoragePool)template.getDataStore()), _mgmtServer.getExecuteInSequence());
         Answer answer = null;
         StoragePool pool = (StoragePool)volume.getDataStore();
         String errMsg = null;
@@ -375,7 +381,7 @@ public class AncientDataMotionStrategy implements DataMotionStrategy {
                 Integer.parseInt(Config.CopyVolumeWait.getDefaultValue()));
         CopyVolumeCommand cvCmd = new CopyVolumeCommand(volume.getId(),
                 volume.getPath(), srcPool, secondaryStorageURL, true,
-                _copyvolumewait);
+                _copyvolumewait, _mgmtServer.getExecuteInSequence());
         CopyVolumeAnswer cvAnswer;
         try {
             cvAnswer = (CopyVolumeAnswer) this.storageMgr.sendToPool(srcPool, cvCmd);
@@ -394,7 +400,7 @@ public class AncientDataMotionStrategy implements DataMotionStrategy {
         
         cvCmd = new CopyVolumeCommand(volume.getId(),
                 secondaryStorageVolumePath, destPool,
-                secondaryStorageURL, false, _copyvolumewait);
+                secondaryStorageURL, false, _copyvolumewait, _mgmtServer.getExecuteInSequence());
         try {
             cvAnswer = (CopyVolumeAnswer) this.storageMgr.sendToPool(destPool, cvCmd);
         } catch (StorageUnavailableException e1) {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/patches/systemvm/debian/config/root/edithosts.sh
----------------------------------------------------------------------
diff --git a/patches/systemvm/debian/config/root/edithosts.sh b/patches/systemvm/debian/config/root/edithosts.sh
index fb0c34f..eaa8292 100755
--- a/patches/systemvm/debian/config/root/edithosts.sh
+++ b/patches/systemvm/debian/config/root/edithosts.sh
@@ -69,7 +69,9 @@ HOSTS=/etc/hosts
 source /root/func.sh
 
 lock="biglock"
-locked=$(getLockFile $lock)
+#default timeout value is 30 mins as DhcpEntryCommand is not synchronized on agent side any more,
+#and multiple commands can be sent to the same VR at a time
+locked=$(getLockFile $lock 1800)
 if [ "$locked" != "1" ]
 then
     exit 1

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/patches/systemvm/debian/config/root/savepassword.sh
----------------------------------------------------------------------
diff --git a/patches/systemvm/debian/config/root/savepassword.sh b/patches/systemvm/debian/config/root/savepassword.sh
index a096b86..fc73603 100755
--- a/patches/systemvm/debian/config/root/savepassword.sh
+++ b/patches/systemvm/debian/config/root/savepassword.sh
@@ -25,7 +25,9 @@
 source /root/func.sh
 
 lock="passwdlock"
-locked=$(getLockFile $lock)
+#default timeout value is 30 mins as password reset command is not synchronized on agent side any more,
+#and multiple commands can be sent to the same VR at a time
+locked=$(getLockFile $lock 1800)
 if [ "$locked" != "1" ]
 then
     exit 1

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/patches/systemvm/debian/config/root/userdata.sh
----------------------------------------------------------------------
diff --git a/patches/systemvm/debian/config/root/userdata.sh b/patches/systemvm/debian/config/root/userdata.sh
index e5d170b..f9ea644 100644
--- a/patches/systemvm/debian/config/root/userdata.sh
+++ b/patches/systemvm/debian/config/root/userdata.sh
@@ -21,7 +21,9 @@
 source /root/func.sh
 
 lock="biglock"
-locked=$(getLockFile $lock)
+#default timeout value is 30 mins as userdata command is not synchronized on agent side any more,
+#and multiple commands can be sent to the same VR at a time
+locked=$(getLockFile $lock 1800)
 if [ "$locked" != "1" ]
 then
     exit 1

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalDhcpManagerImpl.java
----------------------------------------------------------------------
diff --git a/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalDhcpManagerImpl.java b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalDhcpManagerImpl.java
index f87bf71..c749211 100755
--- a/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalDhcpManagerImpl.java
+++ b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalDhcpManagerImpl.java
@@ -53,6 +53,7 @@ import com.cloud.host.Host.Type;
 import com.cloud.host.HostVO;
 import com.cloud.host.dao.HostDao;
 import com.cloud.network.Network;
+import com.cloud.network.NetworkModel;
 import com.cloud.network.PhysicalNetworkServiceProvider;
 import com.cloud.network.dao.PhysicalNetworkDao;
 import com.cloud.network.dao.PhysicalNetworkServiceProviderDao;
@@ -100,6 +101,8 @@ public class BaremetalDhcpManagerImpl extends ManagerBase implements BaremetalDh
     PhysicalNetworkServiceProviderDao _physicalNetworkServiceProviderDao;
     @Inject
     BaremetalDhcpDao _extDhcpDao;
+    @Inject
+    NetworkModel _ntwkModel;
 
     @Override
     public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
@@ -147,7 +150,7 @@ public class BaremetalDhcpManagerImpl extends ManagerBase implements BaremetalDh
             dns = nic.getDns2();
         }
         DhcpEntryCommand dhcpCommand = new DhcpEntryCommand(nic.getMacAddress(), nic.getIp4Address(), profile.getVirtualMachine().getHostName(), null, dns,
-                nic.getGateway(), null);
+                nic.getGateway(), null, _ntwkModel.getExecuteInSeqNtwkElmtCmd());
         String errMsg = String.format("Set dhcp entry on external DHCP %1$s failed(ip=%2$s, mac=%3$s, vmname=%4$s)", h.getPrivateIpAddress(),
                 nic.getIp4Address(), nic.getMacAddress(), profile.getVirtualMachine().getHostName());
         // prepareBareMetalDhcpEntry(nic, dhcpCommand);

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalPxeManagerImpl.java
----------------------------------------------------------------------
diff --git a/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalPxeManagerImpl.java b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalPxeManagerImpl.java
index 59a2811..04f5fbc 100755
--- a/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalPxeManagerImpl.java
+++ b/plugins/hypervisors/baremetal/src/com/cloud/baremetal/networkservice/BaremetalPxeManagerImpl.java
@@ -45,6 +45,7 @@ import com.cloud.deploy.DeployDestination;
 import com.cloud.host.Host;
 import com.cloud.host.HostVO;
 import com.cloud.host.dao.HostDao;
+import com.cloud.network.NetworkModel;
 import com.cloud.network.dao.PhysicalNetworkDao;
 import com.cloud.network.dao.PhysicalNetworkVO;
 import com.cloud.resource.ResourceManager;
@@ -81,6 +82,7 @@ public class BaremetalPxeManagerImpl extends ManagerBase implements BaremetalPxe
 	@Inject NicDao _nicDao;
 	@Inject ConfigurationDao _configDao;
 	@Inject PhysicalNetworkDao _phynwDao;
+	@Inject NetworkModel _ntwkModel;
 	
 	@Override
 	public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
@@ -184,7 +186,7 @@ public class BaremetalPxeManagerImpl extends ManagerBase implements BaremetalPxe
         String serviceOffering = _serviceOfferingDao.findByIdIncludingRemoved(vm.getServiceOfferingId()).getDisplayText();
         String zoneName = _dcDao.findById(vm.getDataCenterId()).getName();
         NicVO nvo = _nicDao.findById(nic.getId());
-        VmDataCommand cmd = new VmDataCommand(nvo.getIp4Address(), vm.getInstanceName());
+        VmDataCommand cmd = new VmDataCommand(nvo.getIp4Address(), vm.getInstanceName(), _ntwkModel.getExecuteInSeqNtwkElmtCmd());
         cmd.addVmData("userdata", "user-data", vm.getUserData());
         cmd.addVmData("metadata", "service-offering", StringUtils.unicodeEscape(serviceOffering));
         cmd.addVmData("metadata", "availability-zone", StringUtils.unicodeEscape(zoneName));

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/plugins/storage/volume/default/src/org/apache/cloudstack/storage/datastore/driver/CloudStackPrimaryDataStoreDriverImpl.java
----------------------------------------------------------------------
diff --git a/plugins/storage/volume/default/src/org/apache/cloudstack/storage/datastore/driver/CloudStackPrimaryDataStoreDriverImpl.java b/plugins/storage/volume/default/src/org/apache/cloudstack/storage/datastore/driver/CloudStackPrimaryDataStoreDriverImpl.java
index 0486902..fa099d3 100644
--- a/plugins/storage/volume/default/src/org/apache/cloudstack/storage/datastore/driver/CloudStackPrimaryDataStoreDriverImpl.java
+++ b/plugins/storage/volume/default/src/org/apache/cloudstack/storage/datastore/driver/CloudStackPrimaryDataStoreDriverImpl.java
@@ -49,11 +49,12 @@ import com.cloud.agent.api.to.StorageFilerTO;
 import com.cloud.exception.StorageUnavailableException;
 import com.cloud.host.HostVO;
 import com.cloud.host.dao.HostDao;
+import com.cloud.server.ManagementServer;
 import com.cloud.storage.DiskOfferingVO;
 import com.cloud.storage.ResizeVolumePayload;
+import com.cloud.storage.SnapshotVO;
 import com.cloud.storage.Storage;
 import com.cloud.storage.Storage.StoragePoolType;
-import com.cloud.storage.SnapshotVO;
 import com.cloud.storage.StorageManager;
 import com.cloud.storage.StoragePool;
 import com.cloud.storage.VMTemplateHostVO;
@@ -85,6 +86,7 @@ public class CloudStackPrimaryDataStoreDriverImpl implements PrimaryDataStoreDri
 	@Inject SnapshotDao snapshotDao;
 	@Inject PrimaryDataStoreDao primaryStoreDao;
 	@Inject SnapshotManager snapshotMgr;
+	@Inject ManagementServer _mgmtSrvr;
 	@Override
 	public String grantAccess(DataObject data, EndPoint ep) {
 		// TODO Auto-generated method stub
@@ -152,7 +154,7 @@ public class CloudStackPrimaryDataStoreDriverImpl implements PrimaryDataStoreDri
 						String fullTmpltUrl = tmpltHostUrl + "/"
 								+ tmpltHostOn.getInstallPath();
 						cmd = new CreateCommand(diskProfile, fullTmpltUrl,
-								new StorageFilerTO(pool));
+								new StorageFilerTO(pool), _mgmtSrvr.getExecuteInSequence());
 					} else {
 						tmpltStoredOn = templateMgr.prepareTemplateForCreate(
 								template, pool);
@@ -166,7 +168,7 @@ public class CloudStackPrimaryDataStoreDriverImpl implements PrimaryDataStoreDri
 						}
 						cmd = new CreateCommand(diskProfile,
 								tmpltStoredOn.getLocalDownloadPath(),
-								new StorageFilerTO(pool));
+								new StorageFilerTO(pool), _mgmtSrvr.getExecuteInSequence());
 					}
 				} else {
 					if (template != null
@@ -180,7 +182,7 @@ public class CloudStackPrimaryDataStoreDriverImpl implements PrimaryDataStoreDri
 						}
 					}
 					cmd = new CreateCommand(diskProfile, new StorageFilerTO(
-							pool));
+							pool), _mgmtSrvr.getExecuteInSequence());
 				}
 
 				Answer answer = storageMgr.sendToPool(pool, null, cmd);

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/configuration/Config.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/configuration/Config.java b/server/src/com/cloud/configuration/Config.java
index f6fa974..3c73783 100755
--- a/server/src/com/cloud/configuration/Config.java
+++ b/server/src/com/cloud/configuration/Config.java
@@ -426,9 +426,11 @@ public enum Config {
     BlacklistedRoutes("Advanced", VpcManager.class, String.class, "blacklisted.routes", null, "Routes that are blacklisted, can not be used for Static Routes creation for the VPC Private Gateway",
 	           "routes", ConfigurationParameterScope.zone.toString()),
 	
-    InternalLbVmServiceOfferingId("Advanced", ManagementServer.class, Long.class, "internallbvm.service.offering", null, "Uuid of the service offering used by internal lb vm; if NULL - default system internal lb offering will be used", null);
- 
-    
+    InternalLbVmServiceOfferingId("Advanced", ManagementServer.class, Long.class, "internallbvm.service.offering", null, "Uuid of the service offering used by internal lb vm; if NULL - default system internal lb offering will be used", null),
+    ExecuteInSequence("Advanced", ManagementServer.class, Boolean.class, "execute.in.sequence.hypervisor.commands", "false", "If set to true, StartCommand, StopCommand, CopyVolumeCommand, CreateCommand will be synchronized on the agent side." +
+    		" If set to false, these commands become asynchronous. Default value is false.", null),
+    ExecuteInSequenceNetworkElementCommands("Advanced", NetworkManager.class, Boolean.class, "execute.in.sequence.network.element.commands", "false", "If set to true, DhcpEntryCommand, SavePasswordCommand, UserDataCommand, VmDataCommand will be synchronized on the agent side." + 
+            " If set to false, these commands become asynchronous. Default value is false.", null);
 	
 	private final String _category;
 	private final Class<?> _componentClass;

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/network/NetworkManager.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/network/NetworkManager.java b/server/src/com/cloud/network/NetworkManager.java
index bc43daa..306169e 100755
--- a/server/src/com/cloud/network/NetworkManager.java
+++ b/server/src/com/cloud/network/NetworkManager.java
@@ -386,4 +386,5 @@ public interface NetworkManager  {
     DhcpServiceProvider getDhcpServiceProvider(Network network);
 
     PublicIp assignPublicIpAddressFromVlans(long dcId, Long podId, Account owner, VlanType type, List<Long> vlanDbIds, Long networkId, String requestedIp, boolean isSystem) throws InsufficientAddressCapacityException;
+
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/network/NetworkManagerImpl.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/network/NetworkManagerImpl.java b/server/src/com/cloud/network/NetworkManagerImpl.java
index 274e794..745fe23 100755
--- a/server/src/com/cloud/network/NetworkManagerImpl.java
+++ b/server/src/com/cloud/network/NetworkManagerImpl.java
@@ -1234,7 +1234,7 @@ public class NetworkManagerImpl extends ManagerBase implements NetworkManager, L
         _configs = _configDao.getConfiguration("AgentManager", params);
         _networkGcWait = NumbersUtil.parseInt(_configs.get(Config.NetworkGcWait.key()), 600);
         _networkGcInterval = NumbersUtil.parseInt(_configs.get(Config.NetworkGcInterval.key()), 600);
-
+        
         _configs = _configDao.getConfiguration("Network", params);
 
         _networkLockTimeout = NumbersUtil.parseInt(_configs.get(Config.NetworkLockTimeout.key()), 600);
@@ -4364,5 +4364,5 @@ public class NetworkManagerImpl extends ManagerBase implements NetworkManager, L
         nic.setVmType(vmType);
         return _nicDao.persist(nic);
     }
-        
+    
  }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/network/NetworkModelImpl.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/network/NetworkModelImpl.java b/server/src/com/cloud/network/NetworkModelImpl.java
index fa34d65..4a4da8e 100755
--- a/server/src/com/cloud/network/NetworkModelImpl.java
+++ b/server/src/com/cloud/network/NetworkModelImpl.java
@@ -208,11 +208,16 @@ public class NetworkModelImpl extends ManagerBase implements NetworkModel {
     private boolean _allowSubdomainNetworkAccess;
 
     private Map<String, String> _configs;
+    
+    protected boolean _executeInSequenceNtwkElmtCmd;
 
     HashMap<Long, Long> _lastNetworkIdsToFree = new HashMap<Long, Long>();
 
     static HashMap<Service, List<Provider>> s_serviceToImplementedProvidersMap = new HashMap<Service, List<Provider>>();
     static HashMap<String, String> s_providerToNetworkElementMap = new HashMap<String, String>();
+    
+    
+    
     /**
      * 
      */
@@ -1869,6 +1874,7 @@ public class NetworkModelImpl extends ManagerBase implements NetworkModel {
         _configs = _configDao.getConfiguration("Network", params);
         _networkDomain = _configs.get(Config.GuestDomainSuffix.key());
         _allowSubdomainNetworkAccess = Boolean.valueOf(_configs.get(Config.SubDomainNetworkAccess.key()));
+        _executeInSequenceNtwkElmtCmd = Boolean.valueOf(_configs.get(Config.ExecuteInSequenceNetworkElementCommands.key()));
 
         NetworkOfferingVO publicNetworkOffering = new NetworkOfferingVO(NetworkOfferingVO.SystemPublicNetwork, TrafficType.Public, true);
         publicNetworkOffering = _networkOfferingDao.persistDefaultNetworkOffering(publicNetworkOffering);
@@ -2112,4 +2118,9 @@ public class NetworkModelImpl extends ManagerBase implements NetworkModel {
     public Networks.IsolationType[] listNetworkIsolationMethods() {
         return Networks.IsolationType.values();
     }
+    
+    @Override
+    public boolean getExecuteInSeqNtwkElmtCmd() {
+        return _executeInSequenceNtwkElmtCmd;
+    }
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/network/element/CloudZonesNetworkElement.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/network/element/CloudZonesNetworkElement.java b/server/src/com/cloud/network/element/CloudZonesNetworkElement.java
index 320258b..bdd8e61 100644
--- a/server/src/com/cloud/network/element/CloudZonesNetworkElement.java
+++ b/server/src/com/cloud/network/element/CloudZonesNetworkElement.java
@@ -152,7 +152,7 @@ public class CloudZonesNetworkElement extends AdapterBase implements NetworkElem
 
     private VmDataCommand generateVmDataCommand(String vmPrivateIpAddress,
             String userData, String serviceOffering, String zoneName, String guestIpAddress, String vmName, String vmInstanceName, long vmId, String vmUuid, String publicKey) {
-        VmDataCommand cmd = new VmDataCommand(vmPrivateIpAddress, vmName);
+        VmDataCommand cmd = new VmDataCommand(vmPrivateIpAddress, vmName, _networkMgr.getExecuteInSeqNtwkElmtCmd());
 
         cmd.addVmData("userdata", "user-data", userData);
         cmd.addVmData("metadata", "service-offering", serviceOffering);
@@ -217,7 +217,7 @@ public class CloudZonesNetworkElement extends AdapterBase implements NetworkElem
             Commands cmds = new Commands(OnError.Continue);
             if (password != null && nic.isDefaultNic()) {
                 final String encodedPassword = PasswordGenerator.rot13(password);
-                SavePasswordCommand cmd = new SavePasswordCommand(encodedPassword, nic.getIp4Address(), uservm.getVirtualMachine().getHostName());
+                SavePasswordCommand cmd = new SavePasswordCommand(encodedPassword, nic.getIp4Address(), uservm.getVirtualMachine().getHostName(), _networkMgr.getExecuteInSeqNtwkElmtCmd());
                 cmds.addCommand("password", cmd);
             }
             String serviceOffering = _serviceOfferingDao.findByIdIncludingRemoved(uservm.getServiceOfferingId()).getDisplayText();

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
index 8edd5bd..752a4f3 100755
--- a/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
+++ b/server/src/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
@@ -166,6 +166,7 @@ import com.cloud.offering.ServiceOffering;
 import com.cloud.offerings.dao.NetworkOfferingDao;
 import com.cloud.resource.ResourceManager;
 import com.cloud.server.ConfigurationServer;
+import com.cloud.server.ManagementServer;
 import com.cloud.service.ServiceOfferingVO;
 import com.cloud.service.dao.ServiceOfferingDao;
 import com.cloud.storage.GuestOSVO;
@@ -797,7 +798,7 @@ public class VirtualNetworkApplianceManagerImpl extends ManagerBase implements V
     private VmDataCommand generateVmDataCommand(VirtualRouter router, String vmPrivateIpAddress, String userData, 
             String serviceOffering, String zoneName, String guestIpAddress, String vmName,
             String vmInstanceName, long vmId, String vmUuid, String publicKey, long guestNetworkId) {
-        VmDataCommand cmd = new VmDataCommand(vmPrivateIpAddress, vmName);
+        VmDataCommand cmd = new VmDataCommand(vmPrivateIpAddress, vmName, _networkModel.getExecuteInSeqNtwkElmtCmd());
 
         cmd.setAccessDetail(NetworkElementCommand.ROUTER_IP, getRouterControlIp(router.getId()));
         cmd.setAccessDetail(NetworkElementCommand.ROUTER_GUEST_IP, getRouterIpInNetwork(guestNetworkId, router.getId()));
@@ -3360,7 +3361,7 @@ public class VirtualNetworkApplianceManagerImpl extends ManagerBase implements V
             if (router.getIsRedundantRouter() && router.getRedundantState() != RedundantState.MASTER) {
             	encodedPassword = PasswordGenerator.rot13("saved_password");
             }
-            SavePasswordCommand cmd = new SavePasswordCommand(encodedPassword, nic.getIp4Address(), profile.getVirtualMachine().getHostName());
+            SavePasswordCommand cmd = new SavePasswordCommand(encodedPassword, nic.getIp4Address(), profile.getVirtualMachine().getHostName(), _networkModel.getExecuteInSeqNtwkElmtCmd());
             cmd.setAccessDetail(NetworkElementCommand.ROUTER_IP, getRouterControlIp(router.getId()));
             cmd.setAccessDetail(NetworkElementCommand.ROUTER_GUEST_IP, getRouterIpInNetwork(nic.getNetworkId(), router.getId()));
             cmd.setAccessDetail(NetworkElementCommand.ROUTER_NAME, router.getInstanceName());
@@ -3400,7 +3401,7 @@ public class VirtualNetworkApplianceManagerImpl extends ManagerBase implements V
     }
     
     private void createDhcpEntryCommand(VirtualRouter router, UserVm vm, NicVO nic, Commands cmds) {
-        DhcpEntryCommand dhcpCommand = new DhcpEntryCommand(nic.getMacAddress(), nic.getIp4Address(), vm.getHostName(), nic.getIp6Address());
+        DhcpEntryCommand dhcpCommand = new DhcpEntryCommand(nic.getMacAddress(), nic.getIp4Address(), vm.getHostName(), nic.getIp6Address(), _networkModel.getExecuteInSeqNtwkElmtCmd());
         DataCenterVO dcVo = _dcDao.findById(router.getDataCenterId());
         Nic defaultNic = findGatewayIp(vm.getId());
         String gatewayIp = defaultNic.getGateway();

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/server/ManagementServer.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/server/ManagementServer.java b/server/src/com/cloud/server/ManagementServer.java
index f60ce48..aec1be7 100755
--- a/server/src/com/cloud/server/ManagementServer.java
+++ b/server/src/com/cloud/server/ManagementServer.java
@@ -72,4 +72,6 @@ public interface ManagementServer extends ManagementService, PluggableService  {
     String getEncryptionIV();
     void resetEncryptionKeyIV();
 
+    boolean getExecuteInSequence();
+
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/server/ManagementServerImpl.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/server/ManagementServerImpl.java b/server/src/com/cloud/server/ManagementServerImpl.java
index dea761d..cfc8333 100755
--- a/server/src/com/cloud/server/ManagementServerImpl.java
+++ b/server/src/com/cloud/server/ManagementServerImpl.java
@@ -766,6 +766,8 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
     ConfigurationServer _configServer;
     @Inject
     UserVmManager _userVmMgr;
+    @Inject ClusterManager _clusterMgr;
+    
 
     private final ScheduledExecutorService _eventExecutor = Executors.newScheduledThreadPool(1, new NamedThreadFactory("EventChecker"));
     private final ScheduledExecutorService _alertExecutor = Executors.newScheduledThreadPool(1, new NamedThreadFactory("AlertChecker"));
@@ -788,10 +790,10 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
         this._planners = _planners;
     }
 
-    @Inject ClusterManager _clusterMgr;
     private String _hashKey = null;
     private String _encryptionKey = null;
     private String _encryptionIV = null;
+    protected boolean _executeInSequence;
 
     @Inject
     protected AffinityGroupVMMapDao _affinityGroupVMMapDao;
@@ -861,6 +863,8 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
             _availableIdsMap.put(id, true);
         }
 
+        _executeInSequence = Boolean.parseBoolean(_configDao.getValue(Config.ExecuteInSequence.key()));
+
 		return true;
 	}
 
@@ -3469,7 +3473,7 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
             String value = _configs.get(Config.CopyVolumeWait.toString());
             int copyvolumewait = NumbersUtil.parseInt(value, Integer.parseInt(Config.CopyVolumeWait.getDefaultValue()));
             // Copy the volume from the source storage pool to secondary storage
-            CopyVolumeCommand cvCmd = new CopyVolumeCommand(volume.getId(), volume.getPath(), srcPool, secondaryStorageURL, true, copyvolumewait);
+            CopyVolumeCommand cvCmd = new CopyVolumeCommand(volume.getId(), volume.getPath(), srcPool, secondaryStorageURL, true, copyvolumewait, _executeInSequence);
             CopyVolumeAnswer cvAnswer = null;
             try {
                 cvAnswer = (CopyVolumeAnswer) _storageMgr.sendToPool(srcPool, cvCmd);
@@ -4080,5 +4084,9 @@ public class ManagementServerImpl extends ManagerBase implements ManagementServe
 
         return plannersAvailable;
     }
-
+    
+    @Override
+    public boolean getExecuteInSequence() {
+        return _executeInSequence;
+    }
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/src/com/cloud/vm/VirtualMachineManagerImpl.java
----------------------------------------------------------------------
diff --git a/server/src/com/cloud/vm/VirtualMachineManagerImpl.java b/server/src/com/cloud/vm/VirtualMachineManagerImpl.java
index f946cd1..5814075 100755
--- a/server/src/com/cloud/vm/VirtualMachineManagerImpl.java
+++ b/server/src/com/cloud/vm/VirtualMachineManagerImpl.java
@@ -130,6 +130,7 @@ import com.cloud.offering.ServiceOffering;
 import com.cloud.org.Cluster;
 import com.cloud.resource.ResourceManager;
 import com.cloud.server.ConfigurationServer;
+import com.cloud.server.ManagementServer;
 import com.cloud.service.ServiceOfferingVO;
 import com.cloud.service.dao.ServiceOfferingDao;
 import com.cloud.storage.DiskOfferingVO;
@@ -259,6 +260,8 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
     protected AffinityGroupVMMapDao _affinityGroupVMMapDao;
     @Inject
     protected ConfigurationServer _configServer;
+    @Inject
+    protected ManagementServer _mgmtServer;
 
     protected List<DeploymentPlanner> _planners;
     public List<DeploymentPlanner> getPlanners() {
@@ -857,7 +860,7 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
                     VirtualMachineTO vmTO = hvGuru.implement(vmProfile);
 
                     cmds = new Commands(OnError.Stop);
-                    cmds.addCommand(new StartCommand(vmTO, dest.getHost()));
+                    cmds.addCommand(new StartCommand(vmTO, dest.getHost(), _mgmtServer.getExecuteInSequence()));
 
                     vmGuru.finalizeDeployment(cmds, vmProfile, dest, ctx);
 
@@ -897,7 +900,7 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
                                 s_logger.info("The guru did not like the answers so stopping " + vm);
                             }
 
-                            StopCommand cmd = new StopCommand(vm);
+                            StopCommand cmd = new StopCommand(vm, _mgmtServer.getExecuteInSequence());
                             StopAnswer answer = (StopAnswer) _agentMgr.easySend(destHostId, cmd);
                             if (answer == null || !answer.getResult()) {
                                 s_logger.warn("Unable to stop " + vm + " due to " + (answer != null ? answer.getDetails() : "no answers"));
@@ -984,7 +987,7 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
 
     protected <T extends VMInstanceVO> boolean sendStop(VirtualMachineGuru<T> guru, VirtualMachineProfile<T> profile, boolean force) {
         VMInstanceVO vm = profile.getVirtualMachine();
-        StopCommand stop = new StopCommand(vm);
+        StopCommand stop = new StopCommand(vm, _mgmtServer.getExecuteInSequence());
         try {
             Answer answer = _agentMgr.send(vm.getHostId(), stop);
             if (!answer.getResult()) {
@@ -1170,7 +1173,7 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
 
         vmGuru.prepareStop(profile);
 
-        StopCommand stop = new StopCommand(vm);
+        StopCommand stop = new StopCommand(vm, _mgmtServer.getExecuteInSequence());
         boolean stopped = false;
         StopAnswer answer = null;
         try {
@@ -1923,11 +1926,11 @@ public class VirtualMachineManagerImpl extends ManagerBase implements VirtualMac
     }
 
     public Command cleanup(VirtualMachine vm) {
-        return new StopCommand(vm);
+        return new StopCommand(vm, _mgmtServer.getExecuteInSequence());
     }
 
     public Command cleanup(String vmName) {
-        return new StopCommand(vmName);
+        return new StopCommand(vmName, _mgmtServer.getExecuteInSequence());
     }
 
     public Commands fullHostSync(final long hostId, StartupRoutingCommand startup) {

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/test/com/cloud/network/MockNetworkModelImpl.java
----------------------------------------------------------------------
diff --git a/server/test/com/cloud/network/MockNetworkModelImpl.java b/server/test/com/cloud/network/MockNetworkModelImpl.java
index 3a36748..bab9df8 100644
--- a/server/test/com/cloud/network/MockNetworkModelImpl.java
+++ b/server/test/com/cloud/network/MockNetworkModelImpl.java
@@ -879,4 +879,10 @@ public class MockNetworkModelImpl extends ManagerBase implements NetworkModel {
     public Nic getNicInNetworkIncludingRemoved(long vmId, long networkId) {
         return null;
     }
+
+    @Override
+    public boolean getExecuteInSeqNtwkElmtCmd() {
+        // TODO Auto-generated method stub
+        return false;
+    }
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/server/test/com/cloud/vpc/MockNetworkModelImpl.java
----------------------------------------------------------------------
diff --git a/server/test/com/cloud/vpc/MockNetworkModelImpl.java b/server/test/com/cloud/vpc/MockNetworkModelImpl.java
index 3e67f5e..a6ab126 100644
--- a/server/test/com/cloud/vpc/MockNetworkModelImpl.java
+++ b/server/test/com/cloud/vpc/MockNetworkModelImpl.java
@@ -892,4 +892,10 @@ public class MockNetworkModelImpl extends ManagerBase implements NetworkModel {
         return null;
     }
 
+    @Override
+    public boolean getExecuteInSeqNtwkElmtCmd() {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
 }

http://git-wip-us.apache.org/repos/asf/cloudstack/blob/d66e9c7b/setup/db/db/schema-410to420.sql
----------------------------------------------------------------------
diff --git a/setup/db/db/schema-410to420.sql b/setup/db/db/schema-410to420.sql
index bcdf2d9..3c5b1bc 100644
--- a/setup/db/db/schema-410to420.sql
+++ b/setup/db/db/schema-410to420.sql
@@ -1884,3 +1884,7 @@ UPDATE `cloud`.`networks` set name='Shared SG enabled network', display_text='Sh
 
 INSERT IGNORE INTO `cloud`.`configuration` VALUES ('Advanced', 'DEFAULT', 'management-server', 'use.system.public.ips', 'true', 'If true, when account has dedicated public ip range(s), once the ips dedicated to the account have been consumed ips will be acquired from the system pool');
 INSERT IGNORE INTO `cloud`.`configuration` VALUES ('Advanced', 'DEFAULT', 'management-server', 'use.system.guest.vlans', 'true', 'If true, when account has dedicated guest vlan range(s), once the vlans dedicated to the account have been consumed vlans will be allocated from the system pool');
+
+INSERT IGNORE INTO `cloud`.`configuration` VALUES ('Advanced', 'DEFAULT', 'management-server', 'execute.in.sequence.hypervisor.commands', 'false', 'If set to true, StartCommand, StopCommand, CopyVolumeCommand, CreateCommand will be synchronized on the agent side. If set to false, these commands become asynchronous. Default value is false.');
+INSERT IGNORE INTO `cloud`.`configuration` VALUES ('Advanced', 'DEFAULT', 'management-server', 'execute.in.sequence.network.element.commands', 'false', 'If set to true, DhcpEntryCommand, SavePasswordCommand, UserDataCommand, VmDataCommand will be synchronized on the agent side. If set to false, these commands become asynchronous. Default value is false.');
+


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