def refresh(self, initialising = False):
"""Refresh domain list from Xen. Expects to be protected by the
domains_lock.
@param initialising True if this is the first refresh after starting
Xend. This does not change this method's behaviour, except for
logging.
"""
doms = self.xen_domains()
for d in self.domains.values():
info = doms.get(d.getDomid())
if info:
d.update(info)
else:
self._delete_domain(d.getDomid())
for d in doms:
if d not in self.domains:
if doms[d]['dying']:
log.log(initialising and logging.ERROR or logging.DEBUG,
'Cannot recreate information for dying domain %d.'
' Xend will ignore this domain from now on.',
doms[d]['dom'])
elif d == PRIV_DOMAIN:
log.fatal(
"No record of privileged domain %d! Terminating.", d)
sys.exit(1)
else:
try:
self._add_domain(
XendDomainInfo.recreate(doms[d], False))
except:
log.exception(
"Failed to recreate information for domain "
"%d. Destroying it in the hope of "
"recovery.", d)
try:
xc.domain_destroy(d)
except:
log.exception('Destruction of %d failed.', d)
def domain_destroy(self, domid):
"""Terminate domain immediately."""
dominfo = self.domain_lookup_by_name_or_id_nr(domid)
if dominfo and dominfo.getDomid() == PRIV_DOMAIN:
raise XendError("Cannot destroy privileged domain %s" % domid)
if dominfo:
val = dominfo.destroy()
else:
try:
val = xc.domain_destroy(domid)
except Exception, ex:
raise XendError(str(ex))
