def get_SCSIidlist(devconfig, sm_config):
SCSIidlist = []
if sm_config.has_key("SCSIid"):
SCSIidlist = sm_config["SCSIid"].split(",")
elif devconfig.has_key("SCSIid"):
SCSIidlist.append(devconfig["SCSIid"])
else:
for key in sm_config:
if util._isSCSIid(key):
SCSIidlist.append(re.sub("^scsi-", "", key))
return SCSIidlist
try:
session = util.get_localAPI_session()
except:
print "Unable to open local XAPI session"
sys.exit(-1)
localhost = session.xenapi.host.get_by_uuid(get_localhost_uuid())
# Check whether DMP Multipathing is enabled (either for root dev or SRs)
try:
if get_root_dev_major() != get_dm_major():
hconf = session.xenapi.host.get_other_config(localhost)
assert hconf["multipathing"] == "true"
assert hconf["multipathhandle"] == "dmp"
except:
mpc_exit(session, 0)
# Check root disk if multipathed
def migrate_VHD_RAW(dest_vdi_uuid, src_vdi_uuid):
session = util.get_localAPI_session()
# For migration to work, both the vdis should be in detach state.
dest_vdi_ref = session.xenapi.VDI.get_by_uuid(dest_vdi_uuid)
src_vdi_ref = session.xenapi.VDI.get_by_uuid(src_vdi_uuid)
if B_util.is_vdi_attached(session, dest_vdi_ref) or B_util.is_vdi_attached(
session, src_vdi_ref):
print "Migration NOT complete, one of the vdis is attached to a vm!!!"
return False
# Migration supported only if the src sr is of type lvmohba or lvmoiscsi
src_sr_ref = session.xenapi.VDI.get_SR(src_vdi_ref)
src_sr_rec = session.xenapi.SR.get_record(src_sr_ref)
if not ((src_sr_rec['type'] == 'lvmoiscsi') or
(src_sr_rec['type'] == 'lvmohba')):
print("Migration NOT complete, src vdi SR of type %s not supported !!!" \
% src_sr_rec['type'])
return False
# Migration supported only if the dest sr is of type hba
dest_sr_ref = session.xenapi.VDI.get_SR(dest_vdi_ref)
dest_sr_rec = session.xenapi.SR.get_record(dest_sr_ref)
if not (dest_sr_rec['type'] == 'rawhba'):
print(
"Migration cannot be completed, dest vdi SR must be of type hba !!!"
)
return False
# Make sure that the dest vdi can contain the data in src vdi
src_vdi_rec = session.xenapi.VDI.get_record(src_vdi_ref)
dest_vdi_rec = session.xenapi.VDI.get_record(dest_vdi_ref)
if not (int(dest_vdi_rec['virtual_size']) > \
int(src_vdi_rec['physical_utilisation'])):
print(
"Migration NOT complete, dest vdi virtual-size: %s less than src physical_utilisation %s"
% (dest_vdi_rec['virtual_size'],
src_vdi_rec['physical_utilisation']))
return False
# Create and plug vbds connecting src vdi and dest and dom0
# This way will take care of multipath if any
dom0_ref = get_dom0_vm(session)
src_vbd_ref = create_vbd(session, dom0_ref, src_vdi_ref)
try:
print("Plugging src VBD")
session.xenapi.VBD.plug(src_vbd_ref)
except:
session.xenapi.VBD.destroy(src_vbd_ref)
print("Migration NOT complete, srv vbd plug failed !!!")
return False
dest_vbd_ref = create_vbd(session, dom0_ref, dest_vdi_ref)
try:
print("Plugging dest VBD")
session.xenapi.VBD.plug(dest_vbd_ref)
except:
session.xenapi.VBD.unplug(src_vbd_ref)
session.xenapi.VBD.destroy(src_vbd_ref)
session.xenapi.VBD.destroy(dest_vbd_ref)
print("Migration NOT complete, dest vbd plug failed !!!")
return False
# Get the tap dev corresponding to the src device
# Generate the LV name
src_sr_uuid = src_sr_rec['uuid']
dest_sr_uuid = dest_sr_rec['uuid']
vg_name = lvhdutil.VG_PREFIX + src_sr_uuid
lv_name = lvhdutil.LV_PREFIX[vhdutil.VDI_TYPE_VHD] + src_vdi_uuid
vhd_path = os.path.join(lvhdutil.VG_LOCATION, vg_name, lv_name)
# Probe tap-ctl to get the minor number
cmd = "tap-ctl list -f %s" % vhd_path
args = shlex.split(cmd)
(rc, stdout, stderr) = util.doexec(args)
output = stdout.split(' ')
minor = output[1].split('=')[1]
src_dev = "/dev/xen/blktap-2/tapdev" + minor
# Generate dest device
dest_sympath = "/dev/sm/phy/%s/%s" % (dest_sr_uuid, dest_vdi_uuid)
dest_dev = os.path.realpath(dest_sympath)
# Perform a dd from input to output device
cmd = "dd if=%s of=%s bs=1048576" % (src_dev, dest_dev)
print("Performing '%s'" % cmd)
args = shlex.split(cmd)
(rc, stdout, stderr) = util.doexec(args)
if rc != 0:
print("Migration NOT complete, could not perform a dd on target")
else:
session.xenapi.VBD.unplug(src_vbd_ref)
session.xenapi.VBD.destroy(src_vbd_ref)
session.xenapi.VBD.unplug(dest_vbd_ref)
session.xenapi.VBD.destroy(dest_vbd_ref)
print("Migration Complete !!!")
return True
def get_SCSIidlist(devconfig, sm_config):
SCSIidlist = []
if sm_config.has_key('SCSIid'):
SCSIidlist = sm_config['SCSIid'].split(',')
elif devconfig.has_key('SCSIid'):
SCSIidlist.append(devconfig['SCSIid'])
elif devconfig.has_key('provider'):
SCSIidlist.append(devconfig['ScsiId'])
else:
for key in sm_config:
if util._isSCSIid(key):
SCSIidlist.append(re.sub("^scsi-","",key))
return SCSIidlist
try:
session = util.get_localAPI_session()
except:
print "Unable to open local XAPI session"
sys.exit(-1)
localhost = session.xenapi.host.get_by_uuid(get_localhost_uuid())
# Check whether multipathing is enabled (either for root dev or SRs)
try:
if get_root_dev_major() != get_dm_major():
hconf = session.xenapi.host.get_other_config(localhost)
assert(hconf['multipathing'] == 'true')
mpath_enabled = True
except:
mpath_enabled = False
# Check root disk if multipathed
def migrate_VHD_RAW(dest_vdi_uuid, src_vdi_uuid):
session = util.get_localAPI_session()
# For migration to work, both the vdis should be in detach state.
dest_vdi_ref = session.xenapi.VDI.get_by_uuid(dest_vdi_uuid)
src_vdi_ref = session.xenapi.VDI.get_by_uuid(src_vdi_uuid)
if B_util.is_vdi_attached(session, dest_vdi_ref) or B_util.is_vdi_attached(session, src_vdi_ref):
print "Migration NOT complete, one of the vdis is attached to a vm!!!"
return False
# Migration supported only if the src sr is of type lvmohba or lvmoiscsi
src_sr_ref = session.xenapi.VDI.get_SR(src_vdi_ref)
src_sr_rec = session.xenapi.SR.get_record(src_sr_ref)
if not ((src_sr_rec['type'] == 'lvmoiscsi') or (src_sr_rec['type'] == 'lvmohba')):
print("Migration NOT complete, src vdi SR of type %s not supported !!!" \
% src_sr_rec['type'])
return False
# Migration supported only if the dest sr is of type hba
dest_sr_ref = session.xenapi.VDI.get_SR(dest_vdi_ref)
dest_sr_rec = session.xenapi.SR.get_record(dest_sr_ref)
if not (dest_sr_rec['type'] == 'rawhba'):
print("Migration cannot be completed, dest vdi SR must be of type hba !!!")
return False
# Make sure that the dest vdi can contain the data in src vdi
src_vdi_rec = session.xenapi.VDI.get_record(src_vdi_ref)
dest_vdi_rec = session.xenapi.VDI.get_record(dest_vdi_ref)
if not (int(dest_vdi_rec['virtual_size']) > \
int(src_vdi_rec['physical_utilisation'])):
print("Migration NOT complete, dest vdi virtual-size: %s less than src physical_utilisation %s" % (dest_vdi_rec['virtual_size'], src_vdi_rec['physical_utilisation']))
return False
# Create and plug vbds connecting src vdi and dest and dom0
# This way will take care of multipath if any
dom0_ref = get_dom0_vm(session)
src_vbd_ref = create_vbd(session, dom0_ref, src_vdi_ref)
try:
print("Plugging src VBD")
session.xenapi.VBD.plug(src_vbd_ref)
except:
session.xenapi.VBD.destroy(src_vbd_ref)
print("Migration NOT complete, srv vbd plug failed !!!")
return False
dest_vbd_ref = create_vbd(session, dom0_ref, dest_vdi_ref)
try:
print("Plugging dest VBD")
session.xenapi.VBD.plug(dest_vbd_ref)
except:
session.xenapi.VBD.unplug(src_vbd_ref)
session.xenapi.VBD.destroy(src_vbd_ref)
session.xenapi.VBD.destroy(dest_vbd_ref)
print("Migration NOT complete, dest vbd plug failed !!!")
return False
# Get the tap dev corresponding to the src device
# Generate the LV name
src_sr_uuid = src_sr_rec['uuid']
dest_sr_uuid = dest_sr_rec['uuid']
vg_name = lvhdutil.VG_PREFIX + src_sr_uuid
lv_name = lvhdutil.LV_PREFIX[vhdutil.VDI_TYPE_VHD] + src_vdi_uuid
vhd_path = os.path.join(lvhdutil.VG_LOCATION, vg_name, lv_name)
# Probe tap-ctl to get the minor number
cmd = "tap-ctl list -f %s" % vhd_path
args = shlex.split(cmd)
(rc,stdout,stderr) = util.doexec(args)
output = stdout.split(' ')
minor = output[1].split('=')[1]
src_dev = "/dev/xen/blktap-2/tapdev" + minor
# Generate dest device
dest_sympath = "/dev/sm/phy/%s/%s" % (dest_sr_uuid,dest_vdi_uuid)
dest_dev = os.path.realpath(dest_sympath)
# Perform a dd from input to output device
cmd = "dd if=%s of=%s bs=1048576" % (src_dev, dest_dev)
print("Performing '%s'" % cmd)
args = shlex.split(cmd)
(rc,stdout,stderr) = util.doexec(args)
if rc != 0:
print("Migration NOT complete, could not perform a dd on target")
else:
session.xenapi.VBD.unplug(src_vbd_ref)
session.xenapi.VBD.destroy(src_vbd_ref)
session.xenapi.VBD.unplug(dest_vbd_ref)
session.xenapi.VBD.destroy(dest_vbd_ref)
print("Migration Complete !!!")
return True
