@DB
@Override
public void allocateVmCapacity(VirtualMachine vm, boolean fromLastHost) {
long hostId = vm.getHostId();
HostVO host = _hostDao.findById(hostId);
long clusterId = host.getClusterId();
float cpuOvercommitRatio =
Float.parseFloat(_clusterDetailsDao.findDetail(clusterId, "cpuOvercommitRatio").getValue());
float memoryOvercommitRatio =
Float.parseFloat(
_clusterDetailsDao.findDetail(clusterId, "memoryOvercommitRatio").getValue());
ServiceOfferingVO svo = _offeringsDao.findById(vm.getServiceOfferingId());
CapacityVO capacityCpu = _capacityDao.findByHostIdType(hostId, CapacityVO.CAPACITY_TYPE_CPU);
CapacityVO capacityMem = _capacityDao.findByHostIdType(hostId, CapacityVO.CAPACITY_TYPE_MEMORY);
if (capacityCpu == null || capacityMem == null || svo == null) {
return;
}
int cpu = (int) (svo.getCpu() * svo.getSpeed());
long ram = (long) (svo.getRamSize() * 1024L * 1024L);
Transaction txn = Transaction.currentTxn();
try {
txn.start();
capacityCpu = _capacityDao.lockRow(capacityCpu.getId(), true);
capacityMem = _capacityDao.lockRow(capacityMem.getId(), true);
long usedCpu = capacityCpu.getUsedCapacity();
long usedMem = capacityMem.getUsedCapacity();
long reservedCpu = capacityCpu.getReservedCapacity();
long reservedMem = capacityMem.getReservedCapacity();
long actualTotalCpu = capacityCpu.getTotalCapacity();
long actualTotalMem = capacityMem.getTotalCapacity();
long totalCpu = (long) (actualTotalCpu * cpuOvercommitRatio);
long totalMem = (long) (actualTotalMem * memoryOvercommitRatio);
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"Hosts's actual total CPU: "
+ actualTotalCpu
+ " and CPU after applying overprovisioning: "
+ totalCpu);
}
long freeCpu = totalCpu - (reservedCpu + usedCpu);
long freeMem = totalMem - (reservedMem + usedMem);
if (s_logger.isDebugEnabled()) {
s_logger.debug("We are allocating VM, increasing the used capacity of this host:" + hostId);
s_logger.debug(
"Current Used CPU: " + usedCpu + " , Free CPU:" + freeCpu + " ,Requested CPU: " + cpu);
s_logger.debug(
"Current Used RAM: " + usedMem + " , Free RAM:" + freeMem + " ,Requested RAM: " + ram);
}
capacityCpu.setUsedCapacity(usedCpu + cpu);
capacityMem.setUsedCapacity(usedMem + ram);
if (fromLastHost) {
/* alloc from reserved */
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"We are allocating VM to the last host again, so adjusting the reserved capacity if it is not less than required");
s_logger.debug("Reserved CPU: " + reservedCpu + " , Requested CPU: " + cpu);
s_logger.debug("Reserved RAM: " + reservedMem + " , Requested RAM: " + ram);
}
if (reservedCpu >= cpu && reservedMem >= ram) {
capacityCpu.setReservedCapacity(reservedCpu - cpu);
capacityMem.setReservedCapacity(reservedMem - ram);
}
} else {
/* alloc from free resource */
if (!((reservedCpu + usedCpu + cpu <= totalCpu)
&& (reservedMem + usedMem + ram <= totalMem))) {
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"Host doesnt seem to have enough free capacity, but increasing the used capacity anyways, since the VM is already starting on this host ");
}
}
}
s_logger.debug(
"CPU STATS after allocation: for host: "
+ hostId
+ ", old used: "
+ usedCpu
+ ", old reserved: "
+ reservedCpu
+ ", actual total: "
+ actualTotalCpu
+ ", total with overprovisioning: "
+ totalCpu
+ "; new used:"
+ capacityCpu.getUsedCapacity()
+ ", reserved:"
+ capacityCpu.getReservedCapacity()
+ "; requested cpu:"
+ cpu
+ ",alloc_from_last:"
+ fromLastHost);
s_logger.debug(
"RAM STATS after allocation: for host: "
+ hostId
+ ", old used: "
+ usedMem
+ ", old reserved: "
+ reservedMem
+ ", total: "
+ totalMem
+ "; new used: "
+ capacityMem.getUsedCapacity()
+ ", reserved: "
+ capacityMem.getReservedCapacity()
+ "; requested mem: "
+ ram
+ ",alloc_from_last:"
+ fromLastHost);
_capacityDao.update(capacityCpu.getId(), capacityCpu);
_capacityDao.update(capacityMem.getId(), capacityMem);
txn.commit();
} catch (Exception e) {
txn.rollback();
return;
}
}
@DB
@Override
public boolean releaseVmCapacity(
VirtualMachine vm, boolean moveFromReserved, boolean moveToReservered, Long hostId) {
ServiceOfferingVO svo = _offeringsDao.findById(vm.getServiceOfferingId());
CapacityVO capacityCpu = _capacityDao.findByHostIdType(hostId, CapacityVO.CAPACITY_TYPE_CPU);
CapacityVO capacityMemory =
_capacityDao.findByHostIdType(hostId, CapacityVO.CAPACITY_TYPE_MEMORY);
Long clusterId = null;
if (hostId != null) {
HostVO host = _hostDao.findById(hostId);
clusterId = host.getClusterId();
}
if (capacityCpu == null || capacityMemory == null || svo == null) {
return false;
}
Transaction txn = Transaction.currentTxn();
try {
txn.start();
capacityCpu = _capacityDao.lockRow(capacityCpu.getId(), true);
capacityMemory = _capacityDao.lockRow(capacityMemory.getId(), true);
long usedCpu = capacityCpu.getUsedCapacity();
long usedMem = capacityMemory.getUsedCapacity();
long reservedCpu = capacityCpu.getReservedCapacity();
long reservedMem = capacityMemory.getReservedCapacity();
long actualTotalCpu = capacityCpu.getTotalCapacity();
float cpuOvercommitRatio =
Float.parseFloat(
_clusterDetailsDao.findDetail(clusterId, "cpuOvercommitRatio").getValue());
float memoryOvercommitRatio =
Float.parseFloat(
_clusterDetailsDao.findDetail(clusterId, "memoryOvercommitRatio").getValue());
int vmCPU = (int) (svo.getCpu() * svo.getSpeed());
long vmMem = (long) (svo.getRamSize() * 1024L * 1024L);
long actualTotalMem = capacityMemory.getTotalCapacity();
long totalMem = (long) (actualTotalMem * memoryOvercommitRatio);
long totalCpu = (long) (actualTotalCpu * cpuOvercommitRatio);
if (s_logger.isDebugEnabled()) {
s_logger.debug(
"Hosts's actual total CPU: "
+ actualTotalCpu
+ " and CPU after applying overprovisioning: "
+ totalCpu);
s_logger.debug(
"Hosts's actual total RAM: "
+ actualTotalMem
+ " and RAM after applying overprovisioning: "
+ totalMem);
}
if (!moveFromReserved) {
/* move resource from used */
if (usedCpu >= vmCPU) {
capacityCpu.setUsedCapacity(usedCpu - vmCPU);
}
if (usedMem >= vmMem) {
capacityMemory.setUsedCapacity(usedMem - vmMem);
}
if (moveToReservered) {
if (reservedCpu + vmCPU <= totalCpu) {
capacityCpu.setReservedCapacity(reservedCpu + vmCPU);
}
if (reservedMem + vmMem <= totalMem) {
capacityMemory.setReservedCapacity(reservedMem + vmMem);
}
}
} else {
if (reservedCpu >= vmCPU) {
capacityCpu.setReservedCapacity(reservedCpu - vmCPU);
}
if (reservedMem >= vmMem) {
capacityMemory.setReservedCapacity(reservedMem - vmMem);
}
}
s_logger.debug(
"release cpu from host: "
+ hostId
+ ", old used: "
+ usedCpu
+ ",reserved: "
+ reservedCpu
+ ", actual total: "
+ actualTotalCpu
+ ", total with overprovisioning: "
+ totalCpu
+ "; new used: "
+ capacityCpu.getUsedCapacity()
+ ",reserved:"
+ capacityCpu.getReservedCapacity()
+ "; movedfromreserved: "
+ moveFromReserved
+ ",moveToReservered"
+ moveToReservered);
s_logger.debug(
"release mem from host: "
+ hostId
+ ", old used: "
+ usedMem
+ ",reserved: "
+ reservedMem
+ ", total: "
+ totalMem
+ "; new used: "
+ capacityMemory.getUsedCapacity()
+ ",reserved:"
+ capacityMemory.getReservedCapacity()
+ "; movedfromreserved: "
+ moveFromReserved
+ ",moveToReservered"
+ moveToReservered);
_capacityDao.update(capacityCpu.getId(), capacityCpu);
_capacityDao.update(capacityMemory.getId(), capacityMemory);
txn.commit();
return true;
} catch (Exception e) {
s_logger.debug("Failed to transit vm's state, due to " + e.getMessage());
txn.rollback();
return false;
}
}