@Override
public void scheduleRestartForVmsOnHost(final HostVO host) {
if (host.getType() != Host.Type.Routing) {
return;
}
s_logger.warn("Scheduling restart for VMs on host " + host.getId());
final List<VMInstanceVO> vms = _instanceDao.listByHostId(host.getId());
final DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
// send an email alert that the host is down
StringBuilder sb = null;
if ((vms != null) && !vms.isEmpty()) {
sb = new StringBuilder();
sb.append(" Starting HA on the following VMs: ");
// collect list of vm names for the alert email
VMInstanceVO vm = vms.get(0);
if (vm.isHaEnabled()) {
sb.append(" " + vm.getName());
}
for (int i = 1; i < vms.size(); i++) {
vm = vms.get(i);
if (vm.isHaEnabled()) {
sb.append(" " + vm.getName());
}
}
}
// send an email alert that the host is down, include VMs
HostPodVO podVO = _podDao.findById(host.getPodId());
String hostDesc =
"name: "
+ host.getName()
+ " (id:"
+ host.getId()
+ "), availability zone: "
+ dcVO.getName()
+ ", pod: "
+ podVO.getName();
_alertMgr.sendAlert(
AlertManager.ALERT_TYPE_HOST,
host.getDataCenterId(),
host.getPodId(),
"Host is down, " + hostDesc,
"Host [" + hostDesc + "] is down." + ((sb != null) ? sb.toString() : ""));
for (final VMInstanceVO vm : vms) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Notifying HA Mgr of to investigate vm " + vm.getId() + "-" + vm.getName());
}
scheduleRestart(vm, true);
}
}
public Long migrate(final HaWorkVO work) {
final long vmId = work.getInstanceId();
final VirtualMachineGuru<VMInstanceVO> mgr = findManager(work.getType());
VMInstanceVO vm = mgr.get(vmId);
if (vm == null || vm.getRemoved() != null) {
s_logger.debug("Unable to find the vm " + vmId);
return null;
}
s_logger.info("Migrating vm: " + vm.toString());
if (vm.getHostId() == null || vm.getHostId() != work.getHostId()) {
s_logger.info("VM is not longer running on the current hostId");
return null;
}
short alertType = AlertManager.ALERT_TYPE_USERVM_MIGRATE;
if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_DOMAIN_ROUTER_MIGRATE;
} else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_CONSOLE_PROXY_MIGRATE;
}
HostVO fromHost = _hostDao.findById(vm.getHostId());
String fromHostName = ((fromHost == null) ? "unknown" : fromHost.getName());
HostVO toHost = null;
if (work.getStep() == Step.Scheduled) {
if (vm.getState() != State.Running) {
s_logger.info(
"VM's state is not ready for migration. "
+ vm.toString()
+ " State is "
+ vm.getState().toString());
return (System.currentTimeMillis() >> 10) + _migrateRetryInterval;
}
DataCenterVO dcVO = _dcDao.findById(fromHost.getDataCenterId());
HostPodVO podVO = _podDao.findById(fromHost.getPodId());
try {
toHost = mgr.prepareForMigration(vm);
if (toHost == null) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to find a host for migrating vm " + vmId);
}
_alertMgr.sendAlert(
alertType,
vm.getDataCenterId(),
vm.getPodId(),
"Unable to migrate vm "
+ vm.getName()
+ " from host "
+ fromHostName
+ " in zone "
+ dcVO.getName()
+ " and pod "
+ podVO.getName(),
"Unable to find a suitable host");
}
} catch (final InsufficientCapacityException e) {
s_logger.warn("Unable to mgirate due to insufficient capacity " + vm.toString());
_alertMgr.sendAlert(
alertType,
vm.getDataCenterId(),
vm.getPodId(),
"Unable to migrate vm "
+ vm.getName()
+ " from host "
+ fromHostName
+ " in zone "
+ dcVO.getName()
+ " and pod "
+ podVO.getName(),
"Insufficient capacity");
} catch (final StorageUnavailableException e) {
s_logger.warn("Storage is unavailable: " + vm.toString());
_alertMgr.sendAlert(
alertType,
vm.getDataCenterId(),
vm.getPodId(),
"Unable to migrate vm "
+ vm.getName()
+ " from host "
+ fromHostName
+ " in zone "
+ dcVO.getName()
+ " and pod "
+ podVO.getName(),
"Storage is gone.");
}
if (toHost == null) {
_agentMgr.maintenanceFailed(vm.getHostId());
return null;
}
if (s_logger.isDebugEnabled()) {
s_logger.debug("Migrating from " + work.getHostId() + " to " + toHost.getId());
}
work.setStep(Step.Migrating);
work.setHostId(toHost.getId());
_haDao.update(work.getId(), work);
}
if (work.getStep() == Step.Migrating) {
vm = mgr.get(vmId); // let's see if anything has changed.
boolean migrated = false;
if (vm == null
|| vm.getRemoved() != null
|| vm.getHostId() == null
|| !_itMgr.stateTransitTo(vm, Event.MigrationRequested, vm.getHostId())) {
s_logger.info("Migration cancelled because state has changed: " + vm.toString());
} else {
try {
boolean isWindows =
_guestOSCategoryDao
.findById(_guestOSDao.findById(vm.getGuestOSId()).getCategoryId())
.getName()
.equalsIgnoreCase("Windows");
MigrateCommand cmd =
new MigrateCommand(vm.getInstanceName(), toHost.getPrivateIpAddress(), isWindows);
Answer answer = _agentMgr.send(fromHost.getId(), cmd);
if (answer != null && answer.getResult()) {
migrated = true;
_storageMgr.unshare(vm, fromHost);
work.setStep(Step.Investigating);
_haDao.update(work.getId(), work);
}
} catch (final AgentUnavailableException e) {
s_logger.debug("host became unavailable");
} catch (final OperationTimedoutException e) {
s_logger.debug("operation timed out");
if (e.isActive()) {
scheduleRestart(vm, true);
}
}
}
if (!migrated) {
s_logger.info("Migration was unsuccessful. Cleaning up: " + vm.toString());
DataCenterVO dcVO = _dcDao.findById(vm.getDataCenterId());
HostPodVO podVO = _podDao.findById(vm.getPodId());
_alertMgr.sendAlert(
alertType,
fromHost.getDataCenterId(),
fromHost.getPodId(),
"Unable to migrate vm "
+ vm.getName()
+ " from host "
+ fromHost.getName()
+ " in zone "
+ dcVO.getName()
+ " and pod "
+ podVO.getName(),
"Migrate Command failed. Please check logs.");
_itMgr.stateTransitTo(vm, Event.MigrationFailedOnSource, toHost.getId());
_agentMgr.maintenanceFailed(vm.getHostId());
Command cleanup = mgr.cleanup(vm, null);
_agentMgr.easySend(toHost.getId(), cleanup);
_storageMgr.unshare(vm, toHost);
return null;
}
}
if (toHost == null) {
toHost = _hostDao.findById(work.getHostId());
}
DataCenterVO dcVO = _dcDao.findById(toHost.getDataCenterId());
HostPodVO podVO = _podDao.findById(toHost.getPodId());
try {
if (!mgr.completeMigration(vm, toHost)) {
_alertMgr.sendAlert(
alertType,
toHost.getDataCenterId(),
toHost.getPodId(),
"Unable to migrate "
+ vmId
+ " to host "
+ toHost.getName()
+ " in zone "
+ dcVO.getName()
+ " and pod "
+ podVO.getName(),
"Migration not completed");
s_logger.warn("Unable to complete migration: " + vm.toString());
} else {
s_logger.info("Migration is complete: " + vm.toString());
}
return null;
} catch (final AgentUnavailableException e) {
s_logger.warn("Agent is unavailable for " + vm.toString());
} catch (final OperationTimedoutException e) {
s_logger.warn("Operation timed outfor " + vm.toString());
}
_itMgr.stateTransitTo(vm, Event.MigrationFailedOnDest, toHost.getId());
return (System.currentTimeMillis() >> 10) + _migrateRetryInterval;
}
/**
* compareState does as its name suggests and compares the states between management server and
* agent. It returns whether something should be cleaned up
*/
protected Command compareState(VMInstanceVO vm, final AgentVmInfo info, final boolean fullSync) {
State agentState = info.state;
final String agentName = info.name;
final State serverState = vm.getState();
final String serverName = vm.getName();
Command command = null;
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"VM "
+ serverName
+ ": server state = "
+ serverState.toString()
+ " and agent state = "
+ agentState.toString());
}
if (agentState == State.Error) {
agentState = State.Stopped;
short alertType = AlertManager.ALERT_TYPE_USERVM;
if (VirtualMachine.Type.DomainRouter.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_DOMAIN_ROUTER;
} else if (VirtualMachine.Type.ConsoleProxy.equals(vm.getType())) {
alertType = AlertManager.ALERT_TYPE_CONSOLE_PROXY;
}
HostPodVO podVO = _podDao.findById(vm.getPodId());
DataCenterVO dcVO = _dcDao.findById(vm.getDataCenterId());
HostVO hostVO = _hostDao.findById(vm.getHostId());
String hostDesc =
"name: "
+ hostVO.getName()
+ " (id:"
+ hostVO.getId()
+ "), availability zone: "
+ dcVO.getName()
+ ", pod: "
+ podVO.getName();
_alertMgr.sendAlert(
alertType,
vm.getDataCenterId(),
vm.getPodId(),
"VM (name: "
+ vm.getName()
+ ", id: "
+ vm.getId()
+ ") stopped on host "
+ hostDesc
+ " due to storage failure",
"Virtual Machine "
+ vm.getName()
+ " (id: "
+ vm.getId()
+ ") running on host ["
+ vm.getHostId()
+ "] stopped due to storage failure.");
}
if (serverState == State.Migrating) {
s_logger.debug("Skipping vm in migrating state: " + vm.toString());
return null;
}
if (agentState == serverState) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Both states are " + agentState.toString() + " for " + serverName);
}
assert (agentState == State.Stopped || agentState == State.Running)
: "If the states we send up is changed, this must be changed.";
_itMgr.stateTransitTo(
vm,
agentState == State.Stopped
? VirtualMachine.Event.AgentReportStopped
: VirtualMachine.Event.AgentReportRunning,
vm.getHostId());
if (agentState == State.Stopped) {
s_logger.debug("State matches but the agent said stopped so let's send a cleanup anyways.");
return info.mgr.cleanup(vm, agentName);
}
return null;
}
if (agentState == State.Stopped) {
// This state means the VM on the agent was detected previously
// and now is gone. This is slightly different than if the VM
// was never completed but we still send down a Stop Command
// to ensure there's cleanup.
if (serverState == State.Running) {
// Our records showed that it should be running so let's restart it.
vm = info.mgr.get(vm.getId());
scheduleRestart(vm, false);
command = info.mgr.cleanup(vm, agentName);
} else if (serverState == State.Stopping) {
if (fullSync) {
s_logger.debug("VM is in stopping state on full sync. Updating the status to stopped");
vm = info.mgr.get(vm.getId());
info.mgr.completeStopCommand(vm);
command = info.mgr.cleanup(vm, agentName);
} else {
s_logger.debug("Ignoring VM in stopping mode: " + vm.getName());
}
} else if (serverState == State.Starting) {
s_logger.debug("Ignoring VM in starting mode: " + vm.getName());
} else {
s_logger.debug("Sending cleanup to a stopped vm: " + agentName);
_itMgr.stateTransitTo(vm, VirtualMachine.Event.AgentReportStopped, null);
command = info.mgr.cleanup(vm, agentName);
}
} else if (agentState == State.Running) {
if (serverState == State.Starting) {
if (fullSync) {
s_logger.debug("VM state is starting on full sync so updating it to running");
vm = info.mgr.get(vm.getId());
info.mgr.completeStartCommand(vm);
}
} else if (serverState == State.Stopping) {
if (fullSync) {
s_logger.debug("VM state is in stopping on fullsync so resend stop.");
vm = info.mgr.get(vm.getId());
info.mgr.completeStopCommand(vm);
command = info.mgr.cleanup(vm, agentName);
} else {
s_logger.debug("VM is in stopping state so no action.");
}
} else if (serverState == State.Destroyed
|| serverState == State.Stopped
|| serverState == State.Expunging) {
s_logger.debug("VM state is in stopped so stopping it on the agent");
vm = info.mgr.get(vm.getId());
command = info.mgr.cleanup(vm, agentName);
} else {
_itMgr.stateTransitTo(vm, VirtualMachine.Event.AgentReportRunning, vm.getHostId());
}
} /*else if (agentState == State.Unknown) {
if (serverState == State.Running) {
if (fullSync) {
vm = info.handler.get(vm.getId());
}
scheduleRestart(vm, false);
} else if (serverState == State.Starting) {
if (fullSync) {
vm = info.handler.get(vm.getId());
}
scheduleRestart(vm, false);
} else if (serverState == State.Stopping) {
if (fullSync) {
s_logger.debug("VM state is stopping in full sync. Resending stop");
command = info.handler.cleanup(vm, agentName);
}
}
}*/
return command;
}
