def deactivate(self):
""" Delete pool in hypervisor
Preconditions:
- pool is activated
- no running VMs in pool
Actions:
- call hypervisor for deletion
- remove path of pool in xenstore
"""
self.pool_lock.acquire()
try:
if not self.get_activated():
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'deactivated')
if len(self.get_started_VMs()) != 0:
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'in use')
pool_id = self.query_pool_id()
# remove cpus from pool
cpus = []
for pool_rec in xc.cpupool_getinfo():
if pool_rec['cpupool'] == pool_id:
cpus = pool_rec['cpulist']
for cpu_number in cpus:
xc.cpupool_removecpu(pool_id, cpu_number)
xc.cpupool_destroy(pool_id)
# update XenStore
xs_path = XS_POOLROOT + "%s/" % pool_id
xstransact.Remove(xs_path)
finally:
self.pool_lock.release()
def deactivate(self):
""" Delete pool in hypervisor
Preconditions:
- pool is activated
- no running VMs in pool
Actions:
- call hypervisor for deletion
- remove path of pool in xenstore
"""
self.pool_lock.acquire()
try:
if not self.get_activated():
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'deactivated')
if len(self.get_started_VMs()) != 0:
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'in use')
pool_id = self.query_pool_id()
# remove cpus from pool
cpus = []
for pool_rec in xc.cpupool_getinfo():
if pool_rec['cpupool'] == pool_id:
cpus = pool_rec['cpulist']
for cpu_number in cpus:
xc.cpupool_removecpu(pool_id, cpu_number)
xc.cpupool_destroy(pool_id)
# update XenStore
xs_path = XS_POOLROOT + "%s/" % pool_id
xstransact.Remove(xs_path)
finally:
self.pool_lock.release()
def remove_host_CPU_live(self, cpu_ref):
""" Remove cpu from pool.
After successfull call, the cpu is free.
Remove of the last cpu of the pool is rejected.
@param cpu_ref: reference of host_cpu instance to remove
@type cpu_ref: str
"""
if not self.get_activated():
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'deactivated')
node = XendNode.instance()
number = node.get_host_cpu_field(cpu_ref, 'number')
self.pool_lock.acquire()
try:
pool_id = self.query_pool_id()
pool_rec = {}
for pool in xc.cpupool_getinfo():
if pool['cpupool'] == pool_id:
pool_rec = pool
break
if number in pool_rec['cpulist']:
if len(pool_rec['cpulist']) < 2 and pool_rec['n_dom'] > 0:
raise PoolError(XEND_ERROR_LAST_CPU_NOT_REM,
'could not remove last cpu')
xc.cpupool_removecpu(pool_id, number)
else:
raise PoolError(XEND_ERROR_INVALID_CPU,
'CPU not assigned to pool')
finally:
self.pool_lock.release()
if number in self.proposed_cpus:
self.proposed_cpus.remove(number)
self._update_ncpu(pool_id)
if self._managed:
XendNode.instance().save_cpu_pools()
def remove_host_CPU_live(self, cpu_ref):
""" Remove cpu from pool.
After successfull call, the cpu is free.
Remove of the last cpu of the pool is rejected.
@param cpu_ref: reference of host_cpu instance to remove
@type cpu_ref: str
"""
if not self.get_activated():
raise PoolError(XEND_ERROR_BAD_POOL_STATE, 'deactivated')
node = XendNode.instance()
number = node.get_host_cpu_field(cpu_ref, 'number')
self.pool_lock.acquire()
try:
pool_id = self.query_pool_id()
pool_rec = {}
for pool in xc.cpupool_getinfo():
if pool['cpupool'] == pool_id:
pool_rec = pool
break
if number in pool_rec['cpulist']:
if len(pool_rec['cpulist']) < 2 and pool_rec['n_dom'] > 0:
raise PoolError(XEND_ERROR_LAST_CPU_NOT_REM,
'could not remove last cpu')
xc.cpupool_removecpu(pool_id, number)
else:
raise PoolError(XEND_ERROR_INVALID_CPU,
'CPU not assigned to pool')
finally:
self.pool_lock.release()
if number in self.proposed_cpus:
self.proposed_cpus.remove(number)
self._update_ncpu(pool_id)
if self._managed:
XendNode.instance().save_cpu_pools()
