def _resignVdis(self, vg_name, lvUuidMap):
"""
Changes the parent locators in each VDI so it points to the resigned LVs
:param vg_name: The Volumegroup where the VDIs reside
:param lvUuidMap: map from old uuids to new uuids
"""
for uuid in lvUuidMap.values():
lv_name = self.LV_VHD_PREFIX + uuid
self.lvmCache.activateNoRefcount(lv_name)
self.lvmCache.setReadonly(lv_name, False)
path = os.path.join(lvhdutil.VG_LOCATION, vg_name, lv_name)
util.SMlog("RESIGN VDI %s" % path)
old_parent = vhdutil._getVHDParentNoCheck(path)
if old_parent:
old_parent_uuid = old_parent[4:] # remove the VHD-
new_parent_uuid = lvUuidMap[old_parent_uuid]
parent_lv_name = self.LV_VHD_PREFIX + new_parent_uuid
self.lvmCache.activateNoRefcount(parent_lv_name)
parent_path = os.path.join(lvhdutil.VG_LOCATION, vg_name, parent_lv_name)
util.SMlog("RESIGN VDI HAS PARENT %s" % parent_path)
vhdutil.setParent(path, parent_path, False)
def _resignVdis(self, vg_name, lvUuidMap):
"""
Changes the parent locators in each VDI so it points to the resigned LVs
:param vg_name: The Volumegroup where the VDIs reside
:param lvUuidMap: map from old uuids to new uuids
"""
for uuid in lvUuidMap.values():
lv_name = self.LV_VHD_PREFIX + uuid
self.lvmCache.activateNoRefcount(lv_name)
self.lvmCache.setReadonly(lv_name, False)
path = os.path.join(lvhdutil.VG_LOCATION, vg_name, lv_name)
util.SMlog("RESIGN VDI %s" % path)
old_parent = vhdutil._getVHDParentNoCheck(path)
if old_parent:
old_parent_uuid = old_parent[4:] # remove the VHD-
new_parent_uuid = lvUuidMap[old_parent_uuid]
parent_lv_name = self.LV_VHD_PREFIX + new_parent_uuid
self.lvmCache.activateNoRefcount(parent_lv_name)
parent_path = os.path.join(lvhdutil.VG_LOCATION, vg_name,
parent_lv_name)
util.SMlog("RESIGN VDI HAS PARENT %s" % parent_path)
vhdutil.setParent(path, parent_path, False)
def compose(self, sr_uuid, vdi1, vdi2):
if self.vdi_type != vhdutil.VDI_TYPE_VHD:
raise xs_errors.XenError("Unimplemented")
parent_fn = vdi1 + vhdutil.FILE_EXTN[vhdutil.VDI_TYPE_VHD]
parent_path = os.path.join(self.sr.path, parent_fn)
assert util.pathexists(parent_path)
vhdutil.setParent(self.path, parent_path, False)
vhdutil.setHidden(parent_path)
util.pread2([vhdutil.VHD_UTIL, "modify", "-p", parent_path, "-n", self.path])
# Tell tapdisk the chain has changed
if not blktap2.VDI.tap_refresh(self.session, sr_uuid, vdi2):
raise util.SMException("failed to refresh VDI %s" % self.uuid)
util.SMlog("VDI.compose: relinked %s->%s" % (vdi2, vdi1))
def compose(self, sr_uuid, vdi1, vdi2):
if self.vdi_type != vhdutil.VDI_TYPE_VHD:
raise xs_errors.XenError('Unimplemented')
parent_fn = vdi1 + vhdutil.FILE_EXTN[vhdutil.VDI_TYPE_VHD]
parent_path = os.path.join(self.sr.path, parent_fn)
assert (util.pathexists(parent_path))
vhdutil.setParent(self.path, parent_path, False)
vhdutil.setHidden(parent_path)
util.pread2(
[vhdutil.VHD_UTIL, "modify", "-p", parent_path, "-n", self.path])
# Tell tapdisk the chain has changed
if not blktap2.VDI.tap_refresh(self.session, sr_uuid, vdi2):
raise util.SMException("failed to refresh VDI %s" % self.uuid)
util.SMlog("VDI.compose: relinked %s->%s" % (vdi2, vdi1))
def compose(self, sr_uuid, vdi1_uuid, vdi2_uuid):
"""
:param sr_uuid:
:param vdi1_uuid:
:param vdi2_uuid:
:return:
"""
if VERBOSE:
util.SMlog(
"rbdsr_vhd.RBDVHDVDI.compose: sr_uuid=%s, vdi1_uuid=%s, vdi2_uuid=%s"
% (sr_uuid, vdi1_uuid, vdi2_uuid))
base_uuid = vdi1_uuid
mirror_uuid = vdi2_uuid
base_path = self.sr._get_path(base_uuid)
mirror_path = self.sr._get_path(mirror_uuid)
base_vdi_ref = self.session.xenapi.VDI.get_by_uuid(base_uuid)
mirror_vdi_ref = self.session.xenapi.VDI.get_by_uuid(mirror_uuid)
mirror_sm_config = self.session.xenapi.VDI.get_sm_config(
mirror_vdi_ref)
mirror_hostRefs = self._get_vdi_hostRefs(mirror_uuid)
local_host_uuid = inventory.get_localhost_uuid()
BaseVDI = self.sr.vdi(base_uuid)
for host_uuid in mirror_hostRefs.iterkeys():
RBDVHDVDI.attach(BaseVDI, sr_uuid, base_uuid, host_uuid=host_uuid)
if local_host_uuid not in mirror_hostRefs:
RBDVHDVDI.attach(BaseVDI,
sr_uuid,
base_uuid,
host_uuid=local_host_uuid)
self.attach(sr_uuid, mirror_uuid, host_uuid=local_host_uuid)
vhdutil.setParent(mirror_path, base_path, False)
vhdutil.setHidden(base_path)
self.sr.session.xenapi.VDI.set_managed(base_vdi_ref, False)
RBDVHDVDI.update(
BaseVDI, sr_uuid, base_uuid
) # TODO: Check if xapi invoke update after set_* op, if it's true then we can remove this line
if 'vhd-parent' in mirror_sm_config:
self.session.xenapi.VDI.remove_from_sm_config(
mirror_vdi_ref, 'vhd-parent')
self.session.xenapi.VDI.add_to_sm_config(mirror_vdi_ref, 'vhd-parent',
base_uuid)
self.sm_config['vhd-parent'] = base_uuid
self.update(sr_uuid, mirror_uuid)
if local_host_uuid not in mirror_hostRefs:
self.detach(sr_uuid, mirror_uuid, host_uuid=local_host_uuid)
RBDVHDVDI.detach(BaseVDI,
sr_uuid,
base_uuid,
host_uuid=local_host_uuid)
if not blktap2.VDI.tap_refresh(self.session, self.sr.uuid, mirror_uuid,
True):
raise util.SMException("failed to refresh VDI %s" % mirror_uuid)
if VERBOSE:
util.SMlog("Compose done")
