def op_receive(self, name, _):
if self.transport:
self.send_reply(["ready", name])
XendDomain.instance().domain_restore_fd(
self.transport.sock.fileno())
else:
log.error(name + ": no transport")
raise XendError(name + ": no transport")
def getVBDs(self):
from xen.xend import XendDomain
vbd_refs = [d.get_vbds() for d in XendDomain.instance().list('all')]
vbd_refs = reduce(lambda x, y: x + y, vbd_refs)
vbds = []
for vbd_ref in vbd_refs:
vdi = XendDomain.instance().get_dev_property_by_uuid('vbd', vbd_ref, 'VDI')
if vdi == self.uuid:
vbds.append(vbd_ref)
return vbds
def destroyDeviceModel(self):
if self.device_model is None:
return
self.sentinel_lock.acquire()
try:
stubdomid = self.vm.getStubdomDomid()
if stubdomid is not None :
from xen.xend import XendDomain
XendDomain.instance().domain_destroy(stubdomid)
elif self.pid:
try:
os.kill(self.pid, signal.SIGHUP)
except OSError, exn:
log.exception(exn)
# Try to reap the child every 100ms for 10s. Then SIGKILL it.
for i in xrange(100):
try:
(p, rv) = os.waitpid(self.pid, os.WNOHANG)
if p == self.pid:
break
except OSError:
# This is expected if Xend has been restarted within
# the life of this domain. In this case, we can kill
# the process, but we can't wait for it because it's
# not our child. We continue this loop, and after it is
# terminated make really sure the process is going away
# (SIGKILL).
pass
time.sleep(0.1)
else:
log.warning("DeviceModel %d took more than 10s "
"to terminate: sending SIGKILL" % self.pid)
try:
os.kill(self.pid, signal.SIGKILL)
os.waitpid(self.pid, 0)
except OSError:
# This happens if the process doesn't exist.
pass
finally:
self.pid = None
self.sentinel_lock.release()
state = xstransact.Remove("/local/domain/0/device-model/%i"
% self.vm.getDomid())
try:
os.unlink('/var/run/tap/qemu-read-%d' % self.vm.getDomid())
os.unlink('/var/run/tap/qemu-write-%d' % self.vm.getDomid())
except:
pass
try:
del sentinel_fifos_inuse[self.sentinel_path_fifo]
os.unlink(self.sentinel_path_fifo)
except:
pass
def destroyDeviceModel(self):
if self.device_model is None:
return
self.sentinel_lock.acquire()
try:
stubdomid = self.vm.getStubdomDomid()
if stubdomid is not None:
from xen.xend import XendDomain
XendDomain.instance().domain_destroy(stubdomid)
elif self.pid:
try:
os.kill(self.pid, signal.SIGHUP)
except OSError, exn:
log.exception(exn)
# Try to reap the child every 100ms for 10s. Then SIGKILL it.
for i in xrange(100):
try:
(p, rv) = os.waitpid(self.pid, os.WNOHANG)
if p == self.pid:
break
except OSError:
# This is expected if Xend has been restarted within
# the life of this domain. In this case, we can kill
# the process, but we can't wait for it because it's
# not our child. We continue this loop, and after it is
# terminated make really sure the process is going away
# (SIGKILL).
pass
time.sleep(0.1)
else:
log.warning("DeviceModel %d took more than 10s "
"to terminate: sending SIGKILL" % self.pid)
try:
os.kill(self.pid, signal.SIGKILL)
os.waitpid(self.pid, 0)
except OSError:
# This happens if the process doesn't exist.
pass
finally:
self.pid = None
self.sentinel_lock.release()
state = xstransact.Remove("/local/domain/0/device-model/%i" %
self.vm.getDomid())
try:
os.unlink('/var/run/tap/qemu-read-%d' % self.vm.getDomid())
os.unlink('/var/run/tap/qemu-write-%d' % self.vm.getDomid())
except:
pass
try:
del sentinel_fifos_inuse[self.sentinel_path_fifo]
os.unlink(self.sentinel_path_fifo)
except:
pass
def op_receive(self, name, _):
if self.transport:
self.send_reply(["ready", name])
try:
XendDomain.instance().domain_restore_fd(
self.transport.sock.fileno(), relocating=True)
except:
self.send_error()
self.close()
else:
log.error(name + ": no transport")
raise XendError(name + ": no transport")
def op_receive(self, name, _):
if self.transport:
self.send_reply(["ready", name])
try:
XendDomain.instance().domain_restore_fd(
self.transport.sock.fileno(), relocating=True)
except:
self.send_error()
self.close()
else:
log.error(name + ": no transport")
raise XendError(name + ": no transport")
def domains_with_state(detail, state, full):
if detail:
domains = XendDomain.instance().list_sorted(state)
ret = []
for dom in domains:
try:
ret.append(fixup_sxpr(dom.sxpr(not full)))
except:
log.warn("Failed to query SXPR for domain %s" % str(dom))
pass
return ret
else:
return XendDomain.instance().list_names(state)
def domains_with_state(detail, state, full):
if detail:
domains = XendDomain.instance().list_sorted(state)
ret = []
for dom in domains:
try:
ret.append(fixup_sxpr(dom.sxpr(not full)))
except:
log.warn("Failed to query SXPR for domain %s" % str(dom))
pass
return ret
else:
return XendDomain.instance().list_names(state)
def wait_devs(dominfo):
from xen.xend import XendDomain
lock = True;
try:
XendDomain.instance().domains_lock.release()
except:
lock = False;
try:
dominfo.waitForDevices() # Wait for backends to set up
except Exception, exn:
log.exception(exn)
if lock:
XendDomain.instance().domains_lock.acquire()
raise
def check_status(self):
try:
global status_list
global status_last
global dest_ip
status_changed=False
status_list_copy=status_list
while True:
if status_list_copy[:5].count(1)==5:
status_now=True
elif status_list_copy[:5].count(0)==5 or status_list_copy.count(0)==10:
status_now=False
if status_now!=status_last:
status_changed=True
else:
status_changed=False
status_last=status_now
if status_changed==True:
if status_now==False:
xendom = XendDomain.instance()
doms = xendom.list('all')
for dom in doms:
vm_uuid = dom.get_uuid()
if cmp(vm_uuid, DOM0_UUID) == 0:
continue
self.hard_shutdown_and_delete(vm_uuid)
# print dest_ip,"status to Down"
# elif status_now==True:
# print dest_ip,"status to Up"
#print 'now status is: ', status_now
time.sleep(0.3)
except BaseException,e:
log.debug(e)
def op_sslreceive(self, name, _):
if self.transport:
self.send_reply(["ready", name])
p2cread, p2cwrite = os.pipe()
threading.Thread(target=connection.SSLSocketServerConnection.recv2fd,
args=(self.transport.sock, p2cwrite)).start()
try:
XendDomain.instance().domain_restore_fd(p2cread,
relocating=True)
except:
os.close(p2cread)
os.close(p2cwrite)
self.send_error()
self.close()
else:
log.error(name + ": no transport")
raise XendError(name + ": no transport")
def activate_xspolicy(self, xspol, flags):
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
return self.__activate_xspolicy(xspol, flags)
finally:
domains.domains_lock.release()
def activate_xspolicy(self, xspol, flags):
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
return self.__activate_xspolicy(xspol, flags)
finally:
domains.domains_lock.release()
def op_sslreceive(self, name, _):
if self.transport:
self.send_reply(["ready", name])
p2cread, p2cwrite = os.pipe()
threading.Thread(
target=connection.SSLSocketServerConnection.recv2fd,
args=(self.transport.sock, p2cwrite)).start()
try:
XendDomain.instance().domain_restore_fd(p2cread,
relocating=True)
except:
os.close(p2cread)
os.close(p2cwrite)
self.send_error()
self.close()
else:
log.error(name + ": no transport")
raise XendError(name + ": no transport")
def getDeviceDetails(self, config):
(devid, back, front) = BlkifController.getDeviceDetails(self, config)
phantomDevid = 0
wrapped = False
try:
imagetype = self.vm.info['image']['type']
except:
imagetype = ""
if imagetype == 'hvm':
tdevname = back['dev']
index = ['c', 'd', 'e', 'f', 'g', 'h', 'i', \
'j', 'l', 'm', 'n', 'o', 'p']
while True:
global phantomDev
global phantomId
import os, stat
phantomId = phantomId + 1
if phantomId == 16:
if index[phantomDev] == index[-1]:
if wrapped:
raise VmError(" No loopback block \
devices are available. ")
wrapped = True
phantomDev = 0
else:
phantomDev = phantomDev + 1
phantomId = 1
devname = 'xvd%s%d' % (index[phantomDev], phantomId)
try:
info = os.stat('/dev/%s' % devname)
except:
break
vbd = { 'mode': 'w', 'device': devname }
fn = 'tap:%s' % back['params']
# recurse ... by creating the vbd, then fallthrough
# and finish creating the original device
from xen.xend import XendDomain
dom0 = XendDomain.instance().privilegedDomain()
phantomDevid = dom0.create_phantom_vbd_with_vdi(vbd, fn)
# we need to wait for this device at a higher level
# the vbd that gets created will have a link to us
# and will let them do it there
# add a hook to point to the phantom device,
# root path is always the same (dom0 tap)
if phantomDevid != 0:
front['phantom_vbd'] = '/local/domain/0/backend/tap/0/%s' \
% str(phantomDevid)
return (devid, back, front)
def getDeviceDetails(self, config):
(devid, back, front) = BlkifController.getDeviceDetails(self, config)
phantomDevid = 0
wrapped = False
try:
imagetype = self.vm.info['image']['type']
except:
imagetype = ""
if imagetype == 'hvm':
tdevname = back['dev']
index = ['c', 'd', 'e', 'f', 'g', 'h', 'i', \
'j', 'l', 'm', 'n', 'o', 'p']
while True:
global phantomDev
global phantomId
import os, stat
phantomId = phantomId + 1
if phantomId == 16:
if index[phantomDev] == index[-1]:
if wrapped:
raise VmError(" No loopback block \
devices are available. ")
wrapped = True
phantomDev = 0
else:
phantomDev = phantomDev + 1
phantomId = 1
devname = 'xvd%s%d' % (index[phantomDev], phantomId)
try:
info = os.stat('/dev/%s' % devname)
except:
break
vbd = { 'mode': 'w', 'device': devname }
fn = 'tap:%s' % back['params']
# recurse ... by creating the vbd, then fallthrough
# and finish creating the original device
from xen.xend import XendDomain
dom0 = XendDomain.instance().privilegedDomain()
phantomDevid = dom0.create_phantom_vbd_with_vdi(vbd, fn)
# we need to wait for this device at a higher level
# the vbd that gets created will have a link to us
# and will let them do it there
# add a hook to point to the phantom device,
# root path is always the same (dom0 tap)
if phantomDevid != 0:
front['phantom_vbd'] = '/local/domain/0/backend/tap/0/%s' \
% str(phantomDevid)
return (devid, back, front)
def get_VM_ssidref(self, vm_ref):
dom = XendDomain.instance().get_vm_by_uuid(vm_ref)
if not dom:
raise InvalidHandleError("VM", vm_ref)
if dom._stateGet() not in [ XEN_API_VM_POWER_STATE_RUNNING, \
XEN_API_VM_POWER_STATE_PAUSED ]:
raise VMBadState("Domain is not running or paused.")
ssid = security.get_ssid(dom.getDomid())
if not ssid:
raise SecurityError(-xsconstants.XSERR_GENERAL_FAILURE)
return ssid[3]
def get_memory_free(self):
xendom = XendDomain.instance()
doms = xendom.list()
doms_mem_total = 0
for dom in doms:
if cmp(dom.get_uuid(), DOM0_UUID) == 0:
continue
dominfo = xendom.get_vm_by_uuid(dom.get_uuid())
doms_mem_total += dominfo.get_memory_dynamic_max()
return (self.host_instance.xc.physinfo()['total_memory'] * 1024 - doms_mem_total)/1024
def reset_acmpolicy(self):
"""
Attempt to reset the system's policy by udating it with
the DEFAULT policy.
"""
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
xml = ACMPolicy.get_reset_policy_xml()
flags = xsconstants.XS_INST_BOOT | xsconstants.XS_INST_LOAD
return self.__add_acmpolicy_to_system(xml, flags, True)
finally:
domains.domains_lock.release()
def reset_acmpolicy(self):
"""
Attempt to reset the system's policy by udating it with
the DEFAULT policy.
"""
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
xml = ACMPolicy.get_reset_policy_xml()
flags = xsconstants.XS_INST_BOOT | xsconstants.XS_INST_LOAD
return self.__add_acmpolicy_to_system(xml, flags, True)
finally:
domains.domains_lock.release()
def run(self):
if self.use_tcp:
# bind to something fixed for now as we may eliminate
# tcp support completely.
self.server = TCPXMLRPCServer(("localhost", 8005),
logRequests=False)
else:
self.server = UnixXMLRPCServer(XML_RPC_SOCKET, False)
# Functions in XendDomainInfo
for name in methods:
fn = eval("lambda domid, *args: dispatch(domid, '%s', args)" %
name)
self.server.register_function(fn, "xend.domain.%s" % name)
# Functions in XendDomain
inst = XendDomain.instance()
for name in dir(inst):
fn = getattr(inst, name)
if name.startswith("domain_") and callable(fn):
if name not in exclude:
self.server.register_function(fn,
"xend.domain.%s" % name[7:])
# Functions in XendNode and XendDmesg
for type, lst, n in [(XendNode, ['info', 'cpu_bvt_slice_set'], 'node'),
(XendDmesg, ['info', 'clear'], 'node.dmesg')]:
inst = type.instance()
for name in lst:
self.server.register_function(getattr(inst, name),
"xend.%s.%s" % (n, name))
# A few special cases
self.server.register_function(domain, 'xend.domain')
self.server.register_function(domains, 'xend.domains')
self.server.register_function(get_log, 'xend.node.log')
self.server.register_function(domain_create, 'xend.domain.create')
self.server.register_function(domain_restore, 'xend.domain.restore')
self.server.register_introspection_functions()
self.ready = True
self.server.serve_forever()
def hard_shutdown_and_delete(self, vm_ref):
xendom = XendDomain.instance()
dominfo = xendom.get_vm_by_uuid(vm_ref)
if not dominfo:
return
domid = dominfo.getDomid()
if domid and cmp (int(domid), -1) > 0:
xendom.domain_destroy(vm_ref)
i = 0
time_out = 30
while True:
i += 1
# ps_new = self.VM_get_power_state(session, vm_ref)['Value']
domid = dominfo.getDomid()
# log.debug(ps_new)
if not domid or cmp (int(domid), -1) == 0:
break
elif cmp(i, time_out) > 0:
break
else:
time.sleep(0.5)
continue
def run(self):
if self.use_tcp:
# bind to something fixed for now as we may eliminate
# tcp support completely.
self.server = TCPXMLRPCServer(("localhost", 8005), logRequests=False)
else:
self.server = UnixXMLRPCServer(XML_RPC_SOCKET, False)
# Functions in XendDomainInfo
for name in methods:
fn = eval("lambda domid, *args: dispatch(domid, '%s', args)"%name)
self.server.register_function(fn, "xend.domain.%s" % name)
# Functions in XendDomain
inst = XendDomain.instance()
for name in dir(inst):
fn = getattr(inst, name)
if name.startswith("domain_") and callable(fn):
if name not in exclude:
self.server.register_function(fn, "xend.domain.%s" % name[7:])
# Functions in XendNode and XendDmesg
for type, lst, n in [(XendNode, ['info', 'cpu_bvt_slice_set'], 'node'),
(XendDmesg, ['info', 'clear'], 'node.dmesg')]:
inst = type.instance()
for name in lst:
self.server.register_function(getattr(inst, name),
"xend.%s.%s" % (n, name))
# A few special cases
self.server.register_function(domain, 'xend.domain')
self.server.register_function(domains, 'xend.domains')
self.server.register_function(get_log, 'xend.node.log')
self.server.register_function(domain_create, 'xend.domain.create')
self.server.register_function(domain_restore, 'xend.domain.restore')
self.server.register_introspection_functions()
self.ready = True
self.server.serve_forever()
def getVMRecords(self):
# self.login()
# vmRecords = self.proxy.VM.get_record_lite(self.session, '').get('Value', [])
# return vmRecords
# #host = self.proxy.VM.get_all().val ---
vms = self._VM_get_all()
retv = []
if vms:
for vm_ref in vms:
xendom = XendDomain.instance()
xeninfo = xendom.get_vm_by_uuid(vm_ref)
# xennode = XendNode.instance()
if not xeninfo:
return retv
# domid = xeninfo.getDomid()
dom_uuid = xeninfo.get_uuid()
record_lite = {'uuid' : dom_uuid,
'power_state' : xeninfo.get_power_state(),
}
# log.debug(record_lite)
retv.append(record_lite)
return retv
def add_acmpolicy_to_system(self, xmltext, flags, overwrite):
""" Add an ACM policy's xml representation to the system. The
policy will automatically be compiled
flags:
XS_INST_BOOT : make policy the one to boot the system with
by default; if there's a policy already installed,
refuse to install this policy unless its one with
the same name
XS_INST_LOAD : load the policy immediately; if this does not work
refuse to install this policy
overwrite:
If any policy is installed and this is False, refuse to install
this policy
If flags is True, then any existing policy will be removed from
the system and the new one will be installed
"""
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
return self.__add_acmpolicy_to_system(xmltext, flags, overwrite)
finally:
domains.domains_lock.release()
def add_acmpolicy_to_system(self, xmltext, flags, overwrite):
""" Add an ACM policy's xml representation to the system. The
policy will automatically be compiled
flags:
XS_INST_BOOT : make policy the one to boot the system with
by default; if there's a policy already installed,
refuse to install this policy unless its one with
the same name
XS_INST_LOAD : load the policy immediately; if this does not work
refuse to install this policy
overwrite:
If any policy is installed and this is False, refuse to install
this policy
If flags is True, then any existing policy will be removed from
the system and the new one will be installed
"""
from xen.xend import XendDomain
domains = XendDomain.instance()
try:
domains.domains_lock.acquire()
return self.__add_acmpolicy_to_system(xmltext, flags, overwrite)
finally:
domains.domains_lock.release()
def domain_restore(src, paused=False):
info = XendDomain.instance().domain_restore(src, paused)
return fixup_sxpr(info.sxpr())
def domain_create(config):
info = XendDomain.instance().domain_create(config)
return fixup_sxpr(info.sxpr())
def restore(xd, fd, dominfo=None, paused=False, relocating=False):
signature = read_exact(fd, len(SIGNATURE),
"not a valid guest state file: signature read")
if signature != SIGNATURE:
raise XendError("not a valid guest state file: found '%s'" % signature)
l = read_exact(fd, sizeof_int,
"not a valid guest state file: config size read")
vmconfig_size = unpack("!i", l)[0]
vmconfig_buf = read_exact(fd, vmconfig_size,
"not a valid guest state file: config read")
p = sxp.Parser()
p.input(vmconfig_buf)
if not p.ready:
raise XendError("not a valid guest state file: config parse")
vmconfig = p.get_val()
if not relocating:
domconfig = XendConfig(sxp_obj=vmconfig)
othervm = xd.domain_lookup_nr(domconfig["name_label"])
if othervm is None or othervm.domid is None:
othervm = xd.domain_lookup_nr(domconfig["uuid"])
if othervm is not None and othervm.domid is not None:
raise VmError("Domain '%s' already exists with ID '%d'" %
(domconfig["name_label"], othervm.domid))
if dominfo:
dominfo.resume()
else:
dominfo = xd.restore_(vmconfig)
# repin domain vcpus if a target node number was specified
# this is done prior to memory allocation to aide in memory
# distribution for NUMA systems.
nodenr = -1
for i, l in enumerate(vmconfig):
if type(l) == type([]):
if l[0] == 'node':
nodenr = int(l[1])
if nodenr >= 0:
node_to_cpu = XendNode.instance().xc.physinfo()['node_to_cpu']
if nodenr < len(node_to_cpu):
for v in range(0, dominfo.info['VCPUs_max']):
xc.vcpu_setaffinity(dominfo.domid, v, node_to_cpu[nodenr])
store_port = dominfo.getStorePort()
console_port = dominfo.getConsolePort()
assert store_port
assert console_port
# if hvm, pass mem size to calculate the store_mfn
image_cfg = dominfo.info.get('image', {})
is_hvm = dominfo.info.is_hvm()
if is_hvm:
apic = int(dominfo.info['platform'].get('apic', 0))
pae = int(dominfo.info['platform'].get('pae', 0))
log.info("restore hvm domain %d, apic=%d, pae=%d", dominfo.domid, apic,
pae)
else:
apic = 0
pae = 0
try:
restore_image = image.create(dominfo, dominfo.info)
memory = restore_image.getRequiredAvailableMemory(
dominfo.info['memory_dynamic_max'] / 1024)
maxmem = restore_image.getRequiredAvailableMemory(
dominfo.info['memory_static_max'] / 1024)
shadow = restore_image.getRequiredShadowMemory(
dominfo.info['shadow_memory'] * 1024,
dominfo.info['memory_static_max'] / 1024)
log.debug("restore:shadow=0x%x, _static_max=0x%x, _static_min=0x%x, ",
dominfo.info['shadow_memory'],
dominfo.info['memory_static_max'],
dominfo.info['memory_static_min'])
# Round shadow up to a multiple of a MiB, as shadow_mem_control
# takes MiB and we must not round down and end up under-providing.
shadow = ((shadow + 1023) / 1024) * 1024
# set memory limit
xc.domain_setmaxmem(dominfo.getDomid(), maxmem)
balloon.free(memory + shadow)
shadow_cur = xc.shadow_mem_control(dominfo.getDomid(), shadow / 1024)
dominfo.info['shadow_memory'] = shadow_cur
cmd = map(str, [
xen.util.auxbin.pathTo(XC_RESTORE), fd,
dominfo.getDomid(), store_port, console_port,
int(is_hvm), pae, apic
])
log.debug("[xc_restore]: %s", string.join(cmd))
handler = RestoreInputHandler()
forkHelper(cmd, fd, handler.handler, True)
# We don't want to pass this fd to any other children -- we
# might need to recover the disk space that backs it.
try:
flags = fcntl.fcntl(fd, fcntl.F_GETFD)
flags |= fcntl.FD_CLOEXEC
fcntl.fcntl(fd, fcntl.F_SETFD, flags)
except:
pass
if handler.store_mfn is None:
raise XendError('Could not read store MFN')
if not is_hvm and handler.console_mfn is None:
raise XendError('Could not read console MFN')
# get qemu state and create a tmp file for dm restore
# Even PV guests may have QEMU stat, but its not currently
# used so only bother with HVM currently.
if is_hvm:
qemu_signature = read_exact(fd, len(QEMU_SIGNATURE),
"invalid device model signature read")
if qemu_signature != QEMU_SIGNATURE:
raise XendError("not a valid device model state: found '%s'" %
qemu_signature)
qemu_fd = os.open("/var/lib/xen/qemu-save.%d" % dominfo.getDomid(),
os.O_WRONLY | os.O_CREAT | os.O_TRUNC)
while True:
buf = os.read(fd, dm_batch)
if len(buf):
write_exact(qemu_fd, buf,
"could not write dm state to tmp file")
else:
break
os.close(qemu_fd)
restore_image.setCpuid()
os.read(fd, 1) # Wait for source to close connection
dominfo.completeRestore(handler.store_mfn, handler.console_mfn)
#
# We shouldn't hold the domains_lock over a waitForDevices
# As this function sometime gets called holding this lock,
# we must release it and re-acquire it appropriately
#
from xen.xend import XendDomain
lock = True
try:
XendDomain.instance().domains_lock.release()
except:
lock = False
try:
dominfo.waitForDevices() # Wait for backends to set up
except Exception, exn:
log.exception(exn)
if lock:
XendDomain.instance().domains_lock.acquire()
if not paused:
dominfo.unpause()
return dominfo
def lookup(domid):
info = XendDomain.instance().domain_lookup(domid)
return info
def domains_with_state(detail, state, full):
if detail:
domains = XendDomain.instance().list_sorted(state)
return map(lambda dom: fixup_sxpr(dom.sxpr(not full)), domains)
else:
return XendDomain.instance().list_names(state)
def __init__(self, dom):
SrvDir.__init__(self)
self.dom = dom
self.xd = XendDomain.instance()
restore_image.setCpuid()
os.read(fd, 1) # Wait for source to close connection
dominfo.completeRestore(handler.store_mfn, handler.console_mfn)
#
# We shouldn't hold the domains_lock over a waitForDevices
# As this function sometime gets called holding this lock,
# we must release it and re-acquire it appropriately
#
from xen.xend import XendDomain
lock = True
try:
XendDomain.instance().domains_lock.release()
except:
lock = False
try:
dominfo.waitForDevices() # Wait for backends to set up
except Exception, exn:
log.exception(exn)
if lock:
XendDomain.instance().domains_lock.acquire()
if not paused:
dominfo.unpause()
return dominfo
def __init__(self):
self.domain_instance = XendDomain.instance()
def _VM_get_all(self):
refs = [d.get_uuid() for d in XendDomain.instance().list('all')
if d.get_uuid() != DOM0_UUID]
return refs
os.read(fd, 1) # Wait for source to close connection
dominfo.completeRestore(handler.store_mfn, handler.console_mfn)
#
# We shouldn't hold the domains_lock over a waitForDevices
# As this function sometime gets called holding this lock,
# we must release it and re-acquire it appropriately
#
from xen.xend import XendDomain
lock = True;
try:
XendDomain.instance().domains_lock.release()
except:
lock = False;
try:
dominfo.waitForDevices() # Wait for backends to set up
except Exception, exn:
log.exception(exn)
if lock:
XendDomain.instance().domains_lock.acquire()
if not paused:
dominfo.unpause()
return dominfo
def __init__(self):
SrvDir.__init__(self)
self.xd = XendDomain.instance()
def lookup(domid):
info = XendDomain.instance().domain_lookup(domid)
return info
if meth_name[0] != '_':
meth = getattr(self.xenapi, meth_name)
if callable(meth) and hasattr(meth, 'api'):
self.server.register_function(meth, getattr(meth, 'api'))
self.server.register_instance(XendAPI.XendAPIAsyncProxy(self.xenapi))
# Legacy deprecated xm xmlrpc api
# --------------------------------------------------------------------
# Functions in XendDomainInfo
for name in methods:
fn = eval("lambda domid, *args: dispatch(domid, '%s', args)"%name)
self.server.register_function(fn, "xend.domain.%s" % name)
inst = XendDomain.instance()
for name in dir(inst):
fn = getattr(inst, name)
if name.startswith("domain_") and callable(fn):
if name not in exclude:
self.server.register_function(fn, "xend.domain.%s" % name[7:])
# Functions in XendPool
for name in POOL_FUNCS:
fn = getattr(XendCPUPool, name)
self.server.register_function(fn, "xend.cpu_pool.%s" % name[5:])
# Functions in XendNode and XendDmesg
for type, lst, n in [(XendNode,
['info', 'pciinfo', 'send_debug_keys',
except Exception, exn:
log.exception("Can't create directory '/var/lib/xen'")
raise XendError("Can't create directory '/var/lib/xen'")
write_exact(fd, SIGNATURE, "could not write guest state file: signature")
sxprep = dominfo.sxpr()
if node > -1:
insert_after(sxprep,'vcpus',['node', str(node)])
for device_sxp in sxp.children(sxprep, 'device'):
backend = sxp.child(device_sxp[1], 'backend')
if backend == None:
continue
bkdominfo = XendDomain.instance().domain_lookup_nr(backend[1])
if bkdominfo == None:
raise XendError("Could not find backend: %s" % backend[1])
if bkdominfo.getDomid() == XendDomain.DOM0_ID:
# Skip for compatibility of checkpoint data format
continue
backend[1] = bkdominfo.getName()
config = sxp.to_string(sxprep)
domain_name = dominfo.getName()
# Rename the domain temporarily, so that we don't get a name clash if this
# domain is migrating (live or non-live) to the local host. Doing such a
# thing is useful for debugging.
dominfo.setName('migrating-' + domain_name)
def createDeviceModel(self, restore = False):
if self.device_model is None:
return
if self.pid:
return
# Execute device model.
#todo: Error handling
args = self.getDeviceModelArgs(restore)
env = dict(os.environ)
if self.display:
env['DISPLAY'] = self.display
if self.xauthority:
env['XAUTHORITY'] = self.xauthority
unique_id = "%i-%i" % (self.vm.getDomid(), time.time())
sentinel_path = sentinel_path_prefix + unique_id
sentinel_path_fifo = sentinel_path + '.fifo'
os.mkfifo(sentinel_path_fifo, 0600)
sentinel_write = file(sentinel_path_fifo, 'r+')
self._openSentinel(sentinel_path_fifo)
self.vm.storeDom("image/device-model-fifo", sentinel_path_fifo)
xstransact.Mkdir("/local/domain/0/device-model/%i" % self.vm.getDomid())
xstransact.SetPermissions("/local/domain/0/device-model/%i" % self.vm.getDomid(),
{ 'dom': self.vm.getDomid(), 'read': True, 'write': True })
log.info("spawning device models: %s %s", self.device_model, args)
# keep track of pid and spawned options to kill it later
self.logfile = "/var/log/xen/qemu-dm-%s.log" % str(self.vm.info['name_label'])
# rotate log
logfile_mode = os.O_WRONLY|os.O_CREAT|os.O_APPEND
logrotate_count = XendOptions.instance().get_qemu_dm_logrotate_count()
if logrotate_count > 0:
logfile_mode |= os.O_TRUNC
if os.path.exists("%s.%d" % (self.logfile, logrotate_count)):
os.unlink("%s.%d" % (self.logfile, logrotate_count))
for n in range(logrotate_count - 1, 0, -1):
if os.path.exists("%s.%d" % (self.logfile, n)):
os.rename("%s.%d" % (self.logfile, n),
"%s.%d" % (self.logfile, (n + 1)))
if os.path.exists(self.logfile):
os.rename(self.logfile, self.logfile + ".1")
null = os.open("/dev/null", os.O_RDONLY)
logfd = os.open(self.logfile, logfile_mode, 0666)
sys.stderr.flush()
contract = osdep.prefork("%s:%d" %
(self.vm.getName(), self.vm.getDomid()))
pid = os.fork()
if pid == 0: #child
try:
osdep.postfork(contract)
os.dup2(null, 0)
os.dup2(logfd, 1)
os.dup2(logfd, 2)
oshelp.close_fds((sentinel_write.fileno(),))
try:
os.execve(self.device_model, args, env)
except Exception, e:
print >>sys.stderr, (
'failed to set up fds or execute dm %s: %s' %
(self.device_model, utils.exception_string(e)))
os._exit(126)
except:
os._exit(127)
else:
osdep.postfork(contract, abandon=True)
self.pid = pid
os.close(null)
os.close(logfd)
sentinel_write.close()
self.vm.storeDom("image/device-model-pid", self.pid)
log.info("device model pid: %d", self.pid)
# we would very much prefer not to have a thread here and instead
# have a callback but sadly we don't have Twisted in xend
self.sentinel_thread = thread.start_new_thread(self._sentinel_watch,())
if self.device_model.find('stubdom-dm') > -1 :
from xen.xend import XendDomain
domains = XendDomain.instance()
domains.domains_lock.release()
count = 0
while True:
orig_state = xstransact.Read("/local/domain/0/device-model/%i/state"
% self.vm.getDomid())
# This can occur right after start-up
if orig_state != None:
break
log.debug('createDeviceModel %i: orig_state is None, retrying' % self.vm.getDomid())
time.sleep(0.1)
count += 1
if count > 100:
break
domains.domains_lock.acquire()
def domains(detail=1):
if detail < 1:
return XendDomain.instance().list_names()
else:
domains = XendDomain.instance().list_sorted()
return map(lambda dom: fixup_sxpr(dom.sxpr()), domains)
def createDeviceModel(self, restore=False):
if self.device_model is None:
return
if self.pid:
return
# Execute device model.
#todo: Error handling
args = self.getDeviceModelArgs(restore)
env = dict(os.environ)
if self.display:
env['DISPLAY'] = self.display
if self.xauthority:
env['XAUTHORITY'] = self.xauthority
unique_id = "%i-%i" % (self.vm.getDomid(), time.time())
sentinel_path = sentinel_path_prefix + unique_id
sentinel_path_fifo = sentinel_path + '.fifo'
os.mkfifo(sentinel_path_fifo, 0600)
sentinel_write = file(sentinel_path_fifo, 'r+')
self._openSentinel(sentinel_path_fifo)
self.vm.storeDom("image/device-model-fifo", sentinel_path_fifo)
xstransact.Mkdir("/local/domain/0/device-model/%i" %
self.vm.getDomid())
xstransact.SetPermissions(
"/local/domain/0/device-model/%i" % self.vm.getDomid(), {
'dom': self.vm.getDomid(),
'read': True,
'write': True
})
log.info("spawning device models: %s %s", self.device_model, args)
# keep track of pid and spawned options to kill it later
self.logfile = "/var/log/xen/qemu-dm-%s.log" % str(
self.vm.info['name_label'])
# rotate log
logfile_mode = os.O_WRONLY | os.O_CREAT | os.O_APPEND
logrotate_count = XendOptions.instance().get_qemu_dm_logrotate_count()
if logrotate_count > 0:
logfile_mode |= os.O_TRUNC
if os.path.exists("%s.%d" % (self.logfile, logrotate_count)):
os.unlink("%s.%d" % (self.logfile, logrotate_count))
for n in range(logrotate_count - 1, 0, -1):
if os.path.exists("%s.%d" % (self.logfile, n)):
os.rename("%s.%d" % (self.logfile, n),
"%s.%d" % (self.logfile, (n + 1)))
if os.path.exists(self.logfile):
os.rename(self.logfile, self.logfile + ".1")
null = os.open("/dev/null", os.O_RDONLY)
logfd = os.open(self.logfile, logfile_mode, 0666)
sys.stderr.flush()
contract = osdep.prefork("%s:%d" %
(self.vm.getName(), self.vm.getDomid()))
pid = os.fork()
if pid == 0: #child
try:
osdep.postfork(contract)
os.dup2(null, 0)
os.dup2(logfd, 1)
os.dup2(logfd, 2)
oshelp.close_fds((sentinel_write.fileno(), ))
try:
os.execve(self.device_model, args, env)
except Exception, e:
print >> sys.stderr, (
'failed to set up fds or execute dm %s: %s' %
(self.device_model, utils.exception_string(e)))
os._exit(126)
except:
os._exit(127)
else:
osdep.postfork(contract, abandon=True)
self.pid = pid
os.close(null)
os.close(logfd)
sentinel_write.close()
self.vm.storeDom("image/device-model-pid", self.pid)
log.info("device model pid: %d", self.pid)
# we would very much prefer not to have a thread here and instead
# have a callback but sadly we don't have Twisted in xend
self.sentinel_thread = thread.start_new_thread(self._sentinel_watch,
())
if self.device_model.find('stubdom-dm') > -1:
from xen.xend import XendDomain
domains = XendDomain.instance()
domains.domains_lock.release()
count = 0
while True:
orig_state = xstransact.Read(
"/local/domain/0/device-model/%i/state" %
self.vm.getDomid())
# This can occur right after start-up
if orig_state != None:
break
log.debug(
'createDeviceModel %i: orig_state is None, retrying' %
self.vm.getDomid())
time.sleep(0.1)
count += 1
if count > 100:
break
domains.domains_lock.acquire()
def domain_restore(src):
info = XendDomain.instance().domain_restore(src)
return fixup_sxpr(info.sxpr())
def lookup(domid):
info = XendDomain.instance().domain_lookup_by_name_or_id(domid)
if not info:
raise XendInvalidDomain(str(domid))
return info
# for it.
if os.uname()[0] != 'SunOS' and os.uname()[0] != 'NetBSD':
tty.setraw(m1)
os.close(s1)
else:
tty.setraw(s1)
fcntl.fcntl(m1, fcntl.F_SETFL, os.O_NDELAY)
slavename = ptsname.ptsname(m1)
dom.storeDom("console/tty", slavename)
# Release the domain lock here, because we definitely don't want
# a stuck bootloader to deny service to other xend clients.
from xen.xend import XendDomain
domains = XendDomain.instance()
domains.domains_lock.release()
(child, m2) = pty.fork()
if (not child):
args = [ blexec ]
if kernel:
args.append("--kernel=%s" % kernel)
if ramdisk:
args.append("--ramdisk=%s" % ramdisk)
if kernel_args:
args.append("--args=%s" % kernel_args)
if quiet:
args.append("-q")
args.append("--output=%s" % fifo)
if blargs:
def domains(detail=1):
if detail < 1:
return XendDomain.instance().list_names()
else:
domains = XendDomain.instance().list_sorted()
return map(lambda dom: fixup_sxpr(dom.sxpr()), domains)
except Exception, exn:
log.exception("Can't create directory '/var/lib/xen'")
raise XendError("Can't create directory '/var/lib/xen'")
write_exact(fd, SIGNATURE, "could not write guest state file: signature")
sxprep = dominfo.sxpr()
if node > -1:
insert_after(sxprep, 'vcpus', ['node', str(node)])
for device_sxp in sxp.children(sxprep, 'device'):
backend = sxp.child(device_sxp[1], 'backend')
if backend == None:
continue
bkdominfo = XendDomain.instance().domain_lookup_nr(backend[1])
if bkdominfo == None:
raise XendError("Could not find backend: %s" % backend[1])
if bkdominfo.getDomid() == XendDomain.DOM0_ID:
# Skip for compatibility of checkpoint data format
continue
backend[1] = bkdominfo.getName()
config = sxp.to_string(sxprep)
domain_name = dominfo.getName()
# Rename the domain temporarily, so that we don't get a name clash if this
# domain is migrating (live or non-live) to the local host. Doing such a
# thing is useful for debugging.
dominfo.setName('migrating-' + domain_name)
def domain_restore(src):
info = XendDomain.instance().domain_restore(src)
return fixup_sxpr(info.sxpr())
def domain_create(config):
info = XendDomain.instance().domain_create(config)
return fixup_sxpr(info.sxpr())
def domain_restore(src, paused=False):
info = XendDomain.instance().domain_restore(src, paused)
return fixup_sxpr(info.sxpr())
def __init__(self, dom):
SrvDir.__init__(self)
self.dom = dom
self.xd = XendDomain.instance()
def lookup(domid):
info = XendDomain.instance().domain_lookup_by_name_or_id(domid)
if not info:
raise XendInvalidDomain(str(domid))
return info
