def deflate(lvmCache, lvName, size):
"""Shrink the LV and the VHD on it to 'size'. Does not change the
virtual size of the VDI"""
currSizeLV = lvmCache.getSize(lvName)
newSize = calcSizeLV(size)
if newSize >= currSizeLV:
return
path = os.path.join(VG_LOCATION, lvmCache.vgName, lvName)
# no undo necessary if this fails at any point between now and the end
vhdutil.setSizePhys(path, newSize)
lvmCache.setSize(lvName, newSize)
def deflate(lvmCache, lvName, size):
"""Shrink the LV and the VHD on it to 'size'. Does not change the
virtual size of the VDI"""
currSizeLV = lvmCache.getSize(lvName)
newSize = calcSizeLV(size)
if newSize >= currSizeLV:
return
path = os.path.join(VG_LOCATION, lvmCache.vgName, lvName)
# no undo necessary if this fails at any point between now and the end
vhdutil.setSizePhys(path, newSize)
lvmCache.setSize(lvName, newSize)
def inflate(journaler, srUuid, vdiUuid, size):
"""Expand a VDI LV (and its VHD) to 'size'. If the LV is already bigger
than that, it's a no-op. Does not change the virtual size of the VDI"""
lvName = LV_PREFIX[vhdutil.VDI_TYPE_VHD] + vdiUuid
vgName = VG_PREFIX + srUuid
path = os.path.join(VG_LOCATION, vgName, lvName)
lvmCache = journaler.lvmCache
currSizeLV = lvmCache.getSize(lvName)
newSize = calcSizeLV(size)
if newSize <= currSizeLV:
return
journaler.create(JRN_INFLATE, vdiUuid, str(currSizeLV))
util.fistpoint.activate("LVHDRT_inflate_after_create_journal", srUuid)
lvmCache.setSize(lvName, newSize)
util.fistpoint.activate("LVHDRT_inflate_after_setSize", srUuid)
util.zeroOut(path, newSize - vhdutil.VHD_FOOTER_SIZE, vhdutil.VHD_FOOTER_SIZE)
util.fistpoint.activate("LVHDRT_inflate_after_zeroOut", srUuid)
vhdutil.setSizePhys(path, newSize, False)
util.fistpoint.activate("LVHDRT_inflate_after_setSizePhys", srUuid)
journaler.remove(JRN_INFLATE, vdiUuid)
def inflate(journaler, srUuid, vdiUuid, size):
"""Expand a VDI LV (and its VHD) to 'size'. If the LV is already bigger
than that, it's a no-op. Does not change the virtual size of the VDI"""
lvName = LV_PREFIX[vhdutil.VDI_TYPE_VHD] + vdiUuid
vgName = VG_PREFIX + srUuid
path = os.path.join(VG_LOCATION, vgName, lvName)
lvmCache = journaler.lvmCache
currSizeLV = lvmCache.getSize(lvName)
newSize = calcSizeLV(size)
if newSize <= currSizeLV:
return
journaler.create(JRN_INFLATE, vdiUuid, str(currSizeLV))
util.fistpoint.activate("LVHDRT_inflate_after_create_journal", srUuid)
lvmCache.setSize(lvName, newSize)
util.fistpoint.activate("LVHDRT_inflate_after_setSize", srUuid)
util.zeroOut(path, newSize - vhdutil.VHD_FOOTER_SIZE,
vhdutil.VHD_FOOTER_SIZE)
util.fistpoint.activate("LVHDRT_inflate_after_zeroOut", srUuid)
vhdutil.setSizePhys(path, newSize, False)
util.fistpoint.activate("LVHDRT_inflate_after_setSizePhys", srUuid)
journaler.remove(JRN_INFLATE, vdiUuid)
def resize(self, sr_uuid, vdi_uuid, size, online=False):
"""
Resize the given VDI to size <size>. Size can be any valid disk size greater than [or smaller than] the current
value.
:param sr_uuid:
:param vdi_uuid:
:param size:
:param online:
:return:
"""
if VERBOSE:
util.SMlog(
"rbdsr_vhd.RBDVHDVDI.resize: sr_uuid=%s, vdi_uuid=%s, size=%s"
% (sr_uuid, vdi_uuid, size))
vdi_ref = self.session.xenapi.VDI.get_by_uuid(vdi_uuid)
sm_config = self.session.xenapi.VDI.get_sm_config(vdi_ref)
vdi_hostRefs = self._get_vdi_hostRefs(vdi_uuid)
local_host_uuid = inventory.get_localhost_uuid()
if 'attached' in sm_config and online is False:
online = True
raise xs_errors.XenError(
'VDIResize',
opterr='Online resize is not supported in VHD mode')
size = vhdutil.validate_and_round_vhd_size(long(size))
if self.sr.provision == "thin":
rbdSizeNew = lvhdutil.calcSizeVHDLV(size)
elif self.sr.provision == "thick":
rbdSizeNew = lvhdutil.calcSizeVHDLV(size)
if online:
retval = super(RBDVHDVDI,
self).resize_online(sr_uuid, vdi_uuid, rbdSizeNew)
else:
retval = super(RBDVHDVDI, self).resize(sr_uuid, vdi_uuid,
rbdSizeNew)
if not online:
# self._map_rbd(vdi_uuid, rbdSizeNew, norefcount=True)
self.attach(sr_uuid, vdi_uuid, host_uuid=local_host_uuid)
else:
if local_host_uuid not in vdi_hostRefs:
self.attach(sr_uuid, vdi_uuid, host_uuid=local_host_uuid)
vhdutil.setSizePhys(self.path, size, False)
vhdutil.setSizeVirtFast(self.path, size)
if online:
if not blktap2.VDI.tap_refresh(self.session, self.sr.uuid,
vdi_uuid, True):
raise util.SMException("failed to refresh VDI %s" % vdi_uuid)
if not online:
# self._unmap_rbd(vdi_uuid, rbdSizeNew, norefcount=True)
self.detach(sr_uuid, vdi_uuid, host_uuid=local_host_uuid)
else:
if local_host_uuid not in vdi_hostRefs:
self.detach(sr_uuid, vdi_uuid, host_uuid=local_host_uuid)
self.size = size
self.session.xenapi.VDI.set_virtual_size(vdi_ref, str(size))
self.session.xenapi.VDI.set_physical_utilisation(vdi_ref, str(size))
return retval
