def _checkActive(path):
if util.pathexists(path):
return True
util.SMlog("_checkActive: %s does not exist!" % path)
symlinkExists = os.path.lexists(path)
util.SMlog("_checkActive: symlink exists: %s" % symlinkExists)
mapperDeviceExists = False
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
cmd = [CMD_DMSETUP, "status", mapperDevice]
try:
ret = util.pread2(cmd)
mapperDeviceExists = True
util.SMlog("_checkActive: %s: %s" % (mapperDevice, ret))
except util.CommandException:
util.SMlog("_checkActive: device %s does not exist" % mapperDevice)
mapperPath = "/dev/mapper/" + mapperDevice
mapperPathExists = util.pathexists(mapperPath)
util.SMlog("_checkActive: path %s exists: %s" % \
(mapperPath, mapperPathExists))
if mapperDeviceExists and mapperPathExists and not symlinkExists:
# we can fix this situation manually here
try:
util.SMlog("_checkActive: attempt to create the symlink manually.")
os.symlink(mapperPath, path)
except OSError, e:
util.SMlog("ERROR: failed to symlink!")
if e.errno != errno.EEXIST:
raise
if util.pathexists(path):
util.SMlog("_checkActive: created the symlink manually")
return True
def _find_path_with_retries(self, vdi_uuid, maxretry=5, period=2.0):
vhd_path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid, self.PARAM_VHD))
raw_path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid, self.PARAM_RAW))
cbt_path = os.path.join(self.sr.path, "%s.%s" %
(vdi_uuid, CBTLOG_TAG))
found = False
tries = 0
while tries < maxretry and not found:
tries += 1
if util.ioretry(lambda: util.pathexists(vhd_path)):
self.vdi_type = vhdutil.VDI_TYPE_VHD
self.path = vhd_path
found = True
elif util.ioretry(lambda: util.pathexists(raw_path)):
self.vdi_type = vhdutil.VDI_TYPE_RAW
self.path = raw_path
self.hidden = False
found = True
elif util.ioretry(lambda: util.pathexists(cbt_path)):
self.vdi_type = CBTLOG_TAG
self.path = cbt_path
self.hidden = False
found = True
if not found:
util.SMlog("VHD %s not found, retry %s of %s" % (vhd_path, tries, maxretry))
time.sleep(period)
return found
def _checkmount(self):
mount_path = self.path
if self.handles("cifs"):
mount_path = self.mountpoint
return util.ioretry(lambda: util.pathexists(mount_path) and \
(util.ismount(mount_path) or \
util.pathexists(self.remotepath) and self._isbind()))
def createJournalDir():
if util.pathexists(VHD_JOURNAL_LOCATION):
return
try:
os.makedirs(VHD_JOURNAL_LOCATION)
except OSError:
pass
if not util.pathexists(VHD_JOURNAL_LOCATION):
raise util.SMException("Failed to create dirs %s" % \
VHD_JOURNAL_LOCATION)
def __init__(self, ns):
self.ns = ns
self.nsDir = os.path.join(self.BASE_DIR, self.ns)
if not util.pathexists(self.nsDir):
try:
os.makedirs(self.nsDir)
except OSError:
pass
if not util.pathexists(self.nsDir):
raise IPCFlagException("failed to create %s" % self.nsDir)
def _reset(ns, obj = None):
nsDir = os.path.join(RefCounter.BASE_DIR, ns)
if not util.pathexists(nsDir):
return
if obj:
if not util.pathexists(os.path.join(nsDir, obj)):
return
objList = [obj]
else:
try:
objList = os.listdir(nsDir)
except OSError:
raise RefCounterException("failed to list '%s'" % ns)
for obj in objList:
RefCounter._removeObject(ns, obj)
def _get(ns, obj):
"""Get the ref count values for 'obj' in namespace 'ns'"""
objFile = os.path.join(RefCounter.BASE_DIR, ns, obj)
(count, binaryCount) = (0, 0)
if util.pathexists(objFile):
(count, binaryCount) = RefCounter._readCount(objFile)
return (count, binaryCount)
def create(self, sr_uuid, size):
if util.ioretry(lambda: self._checkmount()):
raise xs_errors.XenError('NFSAttached')
# Set the target path temporarily to the base dir
# so that we can create the target SR directory
self.remotepath = self.dconf['serverpath']
try:
self.attach(sr_uuid)
except:
try:
os.rmdir(self.path)
except:
pass
raise xs_errors.XenError('NFSMount')
newpath = os.path.join(self.path, sr_uuid)
if util.ioretry(lambda: util.pathexists(newpath)):
if len(util.ioretry(lambda: util.listdir(newpath))) != 0:
self.detach(sr_uuid)
raise xs_errors.XenError('SRExists')
else:
try:
util.ioretry(lambda: util.makedirs(newpath))
except util.CommandException, inst:
if inst.code != errno.EEXIST:
self.detach(sr_uuid)
raise xs_errors.XenError('NFSCreate', \
opterr='remote directory creation error is %d' \
% inst.code)
def _checkpath(self, path):
try:
if not util.ioretry(lambda: util.pathexists(path)):
return False
return True
except util.CommandException, inst:
raise xs_errors.XenError("EIO", opterr="IO error checking path %s" % path)
def load(self, vdi_uuid):
self.vdi_type = SR.DEFAULT_TAP
self.path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid,self.vdi_type))
if util.ioretry(lambda: util.pathexists(self.path)):
try:
st = util.ioretry(lambda: os.stat(self.path))
self.utilisation = long(st.st_size)
except util.CommandException, inst:
if inst.code == errno.EIO:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
else:
raise xs_errors.XenError('VDIType', \
opterr='Invalid VDI type %s' % self.vdi_type)
try:
diskinfo = util.ioretry(lambda: self._query_info(self.path))
if diskinfo.has_key('parent'):
self.parent = diskinfo['parent']
else:
self.parent = ''
self.size = long(diskinfo['size']) * 1024 * 1024
self.hidden = long(diskinfo['hidden'])
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
def _createNamespace(ns):
nsDir = os.path.join(RefCounter.BASE_DIR, ns)
if not util.pathexists(nsDir):
try:
os.makedirs(nsDir)
except OSError:
raise RefCounterException("failed to makedirs '%s'" % nsDir)
def create(self, sr_uuid, vdi_uuid, size):
if util.ioretry(lambda: util.pathexists(self.path)):
raise xs_errors.XenError('VDIExists')
overhead = 0
if self.vdi_type == vhdutil.VDI_TYPE_VHD:
overhead = vhdutil.calcOverheadFull(long(size))
# Test the amount of actual disk space
if ENFORCE_VIRT_ALLOC:
self.sr._loadvdis()
reserved = self.sr.virtual_allocation
sr_size = self.sr._getsize()
if (sr_size - reserved) < (long(size) + overhead):
raise xs_errors.XenError('SRNoSpace')
if self.vdi_type == vhdutil.VDI_TYPE_VHD:
try:
size = vhdutil.validate_and_round_vhd_size(long(size))
mb = 1024L * 1024L
size_mb = long(size) / mb
util.ioretry(lambda: self._create(str(size_mb), self.path))
self.size = util.ioretry(lambda: self._query_v(self.path))
except util.CommandException, inst:
raise xs_errors.XenError('VDICreate',
opterr='error %d' % inst.code)
def delete(self, sr_uuid):
self.attach(sr_uuid)
cleanup.gc_force(self.session, self.uuid)
# check to make sure no VDIs are present; then remove old
# files that are non VDI's
try:
if util.ioretry(lambda: util.pathexists(self.path)):
#Load the VDI list
self._loadvdis()
for uuid in self.vdis:
if not self.vdis[uuid].deleted:
raise xs_errors.XenError('SRNotEmpty', \
opterr='VDIs still exist in SR')
# remove everything else, there are no vdi's
for name in util.ioretry(lambda: util.listdir(self.path)):
fullpath = os.path.join(self.path,name)
try:
util.ioretry(lambda: os.unlink(fullpath))
except util.CommandException, inst:
if inst.code != errno.ENOENT and \
inst.code != errno.EISDIR:
raise xs_errors.XenError('FileSRDelete', \
opterr='failed to remove %s error %d' \
% (fullpath, inst.code))
self.detach(sr_uuid)
def delete(self, sr_uuid):
if not self._checkpath(self.path):
raise xs_errors.XenError("SRUnavailable", opterr="no such directory %s" % self.path)
cleanup.gc_force(self.session, self.uuid)
# check to make sure no VDIs are present; then remove old
# files that are non VDI's
try:
if util.ioretry(lambda: util.pathexists(self.path)):
# Load the VDI list
self._loadvdis()
for uuid in self.vdis:
if not self.vdis[uuid].deleted:
raise xs_errors.XenError("SRNotEmpty", opterr="VDIs still exist in SR")
# remove everything else, there are no vdi's
for name in util.ioretry(lambda: util.listdir(self.path)):
fullpath = os.path.join(self.path, name)
try:
util.ioretry(lambda: os.unlink(fullpath))
except util.CommandException, inst:
if inst.code != errno.ENOENT and inst.code != errno.EISDIR:
raise xs_errors.XenError(
"FileSRDelete", opterr="failed to remove %s error %d" % (fullpath, inst.code)
)
except util.CommandException, inst:
raise xs_errors.XenError("FileSRDelete", opterr="error %d" % inst.code)
def create(self, sr_uuid, vdi_uuid, size):
if util.ioretry(lambda: util.pathexists(self.path)):
raise xs_errors.XenError('VDIExists')
overhead = 0
if self.vdi_type == vhdutil.VDI_TYPE_VHD:
overhead = vhdutil.calcOverheadFull(long(size))
# Test the amount of actual disk space
if ENFORCE_VIRT_ALLOC:
self.sr._loadvdis()
reserved = self.sr.virtual_allocation
sr_size = self.sr._getsize()
if (sr_size - reserved) < (long(size) + overhead):
raise xs_errors.XenError('SRNoSpace')
if self.vdi_type == vhdutil.VDI_TYPE_VHD:
try:
mb = 1024L * 1024L
size_mb = util.roundup(VHD_SIZE_INC, long(size)) / mb
if size_mb < 1 or (size_mb + (overhead / mb)) >= MAX_DISK_MB:
raise xs_errors.XenError('VDISize', opterr='VDI size ' + \
'must be between 1 MB and %d MB' % \
((MAX_DISK_MB - MAX_DISK_METADATA) - 1))
util.ioretry(lambda: self._create(str(size_mb), self.path))
self.size = util.ioretry(lambda: self._query_v(self.path))
except util.CommandException, inst:
raise xs_errors.XenError('VDICreate',
opterr='error %d' % inst.code)
def create(self, sr_uuid, size):
if util.pathexists(self.blockdevice):
util.zeroOut(self.blockdevice, 0, 1024 * 1024)
cmd = ["mkfs", "-t", "ocfs2", "-b", "4K", "-C", "1M", "-N", "16", "-F", self.blockdevice]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError("OCFSFilesystem", opterr="mkfs failed error %d" % os.strerror(inst.code))
def _checkpath(self, path):
try:
if util.ioretry(lambda: util.pathexists(path)):
if util.ioretry(lambda: util.isdir(path)):
return True
return False
except util.CommandException, inst:
raise xs_errors.XenError('EIO', \
opterr='IO error checking path %s' % path)
def create(self, sr_uuid, size):
if util.pathexists(self.blockdevice):
util.zeroOut(self.blockdevice, 0, 1024*1024)
cmd = ['mkfs', '-t', 'ocfs2', '-b', '4K', '-C', '1M', '-N', '16', '-F', self.blockdevice ]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('OCFSFilesystem', \
opterr='mkfs failed error %d' % os.strerror(inst.code))
def attach_from_config(self, sr_uuid, vdi_uuid):
"""Used for HA State-file only. Will not just attach the VDI but
also start a tapdisk on the file"""
util.SMlog("OCFSFileVDI.attach_from_config")
try:
if not util.pathexists(self.sr.path):
self.sr.attach(sr_uuid)
except:
util.logException("OCFSFileVDI.attach_from_config")
raise xs_errors.XenError("SRUnavailable", opterr="Unable to attach from config")
def attach(self, sr_uuid, vdi_uuid):
self.sr._loadvdis()
if not self.sr.vdis.has_key(vdi_uuid):
raise xs_errors.XenError('VDIUnavailable')
if not util.pathexists(self.path):
self.sr.refresh()
if not util.wait_for_path(self.path, MAX_TIMEOUT):
util.SMlog("Unable to detect LUN attached to host [%s]" % self.sr.path)
raise xs_errors.XenError('VDIUnavailable')
return super(RAWVDI, self).attach(sr_uuid, vdi_uuid)
def _load(self, vdi_uuid):
self.vdi_type = SR.DEFAULT_TAP
self.path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid,self.vdi_type))
if self.sr.__dict__.get("vhds") and self.sr.vhds.get(vdi_uuid):
# VHD info already preloaded: use it instead of querying directly
vhdInfo = self.sr.vhds[vdi_uuid]
self.utilisation = vhdInfo.sizePhys
self.size = vhdInfo.sizeVirt
self.hidden = vhdInfo.hidden
if self.hidden:
self.managed = False
self.parent = vhdInfo.parentUuid
if self.parent:
self.sm_config_override = {'vhd-parent':self.parent}
else:
self.sm_config_override = {'vhd-parent':None}
return
try:
# Change to the SR directory in case parent
# locator field path has changed
os.chdir(self.sr.path)
except:
raise xs_errors.XenError('SRUnavailable')
if util.ioretry(lambda: util.pathexists(self.path)):
try:
st = util.ioretry(lambda: os.stat(self.path))
self.utilisation = long(st.st_size)
except util.CommandException, inst:
if inst.code == errno.EIO:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
else:
raise xs_errors.XenError('VDIType', \
opterr='Invalid VDI type %s' % self.vdi_type)
try:
diskinfo = util.ioretry(lambda: self._query_info(self.path))
if diskinfo.has_key('parent'):
self.parent = diskinfo['parent']
self.sm_config_override = {'vhd-parent':self.parent}
else:
self.sm_config_override = {'vhd-parent':None}
self.parent = ''
self.size = long(diskinfo['size']) * 1024 * 1024
self.hidden = long(diskinfo['hidden'])
if self.hidden:
self.managed = False
self.exists = True
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
def delete(self, sr_uuid, vdi_uuid):
if not util.ioretry(lambda: util.pathexists(self.path)):
return
if self.attached:
raise xs_errors.XenError('VDIInUse')
try:
util.ioretry(lambda: self._mark_hidden(self.path))
except util.CommandException, inst:
raise xs_errors.XenError('VDIDelete', opterr='error %d' % inst.code)
def _attach_LUN_bySCSIid(self, SCSIid):
if not self.attached:
raise xs_errors.XenError("SRUnavailable")
path = self.mpathmodule.path(SCSIid)
if not util.pathexists(path):
self.refresh()
if not util.wait_for_path(path, MAX_TIMEOUT):
util.SMlog("Unable to detect LUN attached to host [%s]" % path)
return False
return True
def _checkActive(path):
if util.pathexists(path):
return True
util.SMlog("_checkActive: %s does not exist!" % path)
util.SMlog("_checkActive: symlink exists: %s" % os.path.lexists(path))
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
cmd = [CMD_DMSETUP, "status", mapperDevice]
try:
ret = util.pread2(cmd)
util.SMlog("_checkActive: %s: %s" % (mapperDevice, ret))
except util.CommandException:
util.SMlog("_checkActive: device %s does not exist" % mapperDevice)
mapperPath = "/dev/mapper/" + mapperDevice
util.SMlog("_checkActive: path %s exists: %s" % \
(mapperPath, util.pathexists(mapperPath)))
return False
def delete(self, sr_uuid, vdi_uuid):
if not util.ioretry(lambda: util.pathexists(self.path)):
return
if self.attached:
raise xs_errors.XenError("VDIInUse")
if self.vdi_type == vhdutil.VDI_TYPE_VHD:
try:
util.ioretry(lambda: self._mark_hidden(self.path))
except util.CommandException, inst:
raise xs_errors.XenError("VDIDelete", opterr="error %d" % inst.code)
def attach(self, sr_uuid, vdi_uuid):
util.SMlog("RBDVDI.attach for %s" % self.uuid)
vdi_ref = self.sr.srcmd.params['vdi_ref']
sm_config = self.session.xenapi.VDI.get_sm_config(vdi_ref)
if not hasattr(self,'xenstore_data'):
self.xenstore_data = {}
self.xenstore_data.update(scsiutil.update_XS_SCSIdata(self.uuid, scsiutil.gen_synthetic_page_data(self.uuid)))
self.xenstore_data['storage-type']='rbd'
self.xenstore_data['vdi-type']=self.vdi_type
self.attached = True
self.session.xenapi.VDI.remove_from_sm_config(vdi_ref, 'attached')
self.session.xenapi.VDI.add_to_sm_config(vdi_ref, 'attached', 'true')
self.size = int(self.session.xenapi.VDI.get_virtual_size(vdi_ref))
##########
vdis = self.session.xenapi.SR.get_VDIs(self.sr.sr_ref)
has_a_snapshot = False
for tmp_vdi in vdis:
tmp_vdi_uuid = self.session.xenapi.VDI.get_uuid(tmp_vdi)
tmp_sm_config = self.session.xenapi.VDI.get_sm_config(tmp_vdi)
if tmp_sm_config.has_key("snapshot-of"):
if tmp_sm_config["snapshot-of"] == vdi_uuid:
has_a_snapshot = True
if tmp_sm_config.has_key("sxm_mirror"):
sxm_mirror_vdi = vdi_uuid
########## SXM VDIs
if sm_config.has_key("base_mirror"):
if has_a_snapshot:
# it's a mirror vdi of storage migrating VM
# it's attached first
self.session.xenapi.VDI.add_to_sm_config(vdi_ref, 'sxm_mirror', 'true')
# creating dm snapshot dev
self._setup_mirror(vdi_uuid, self.size)
else:
# it's a base vdi of storage migrating VM
# it's attached after mirror VDI and mirror snapshot VDI has been created
self._map_VHD(vdi_uuid)
########## not SXM VDIs
else:
# it's not SXM VDI, just attach it
self._map_VHD(vdi_uuid)
if not util.pathexists(self.path):
raise xs_errors.XenError('VDIUnavailable', opterr='Could not find: %s' % self.path)
return VDI.VDI.attach(self, self.sr.uuid, self.uuid)
def generate_config(self, sr_uuid, vdi_uuid):
util.SMlog("OCFSFileVDI.generate_config")
if not util.pathexists(self.path):
raise xs_errors.XenError('VDIUnavailable')
resp = {}
resp['device_config'] = self.sr.dconf
resp['sr_uuid'] = sr_uuid
resp['vdi_uuid'] = vdi_uuid
resp['command'] = 'vdi_attach_from_config'
# Return the 'config' encoded within a normal XMLRPC response so that
# we can use the regular response/error parsing code.
config = xmlrpclib.dumps(tuple([resp]), "vdi_attach_from_config")
return xmlrpclib.dumps((config,), "", True)
def attach_from_config(self, sr_uuid, vdi_uuid):
"""
Attach and activate a VDI using config generated by
vdi_generate_config above. This is used for cases such as
the HA state-file and the redo-log.
"""
util.SMlog("FileVDI.attach_from_config")
try:
if not util.pathexists(self.sr.path):
self.sr.attach(sr_uuid)
except:
util.logException("FileVDI.attach_from_config")
raise xs_errors.XenError("SRUnavailable", opterr="Unable to attach from config")
def get(self, type, id):
"""Get the value for the journal entry of type "type" for "id".
Return None if no such entry exists"""
path = self._getPath(type, id)
if not util.pathexists(path):
return None
try:
f = open(path, "r")
except IOError, e:
if e.errno == errno.ENOENT:
# the file can disappear any time, since there is no locking
return None
raise
def delete(self, sr_uuid, vdi_uuid, data_only = False):
if not util.ioretry(lambda: util.pathexists(self.path)):
return super(FileVDI, self).delete(sr_uuid, vdi_uuid, data_only)
if self.attached:
raise xs_errors.XenError('VDIInUse')
try:
util.force_unlink(self.path)
except Exception, e:
raise xs_errors.XenError(
'VDIDelete',
opterr='Failed to unlink file during deleting VDI: %s' % str(e))
# Set the target path temporarily to the base dir
# so that we can create the target SR directory
self.remotepath = self.dconf['serverpath'].encode('utf-8')
try:
self.mount_remotepath(sr_uuid)
except Exception, exn:
try:
os.rmdir(self.path)
except:
pass
raise exn
if not self.nosubdir:
newpath = os.path.join(self.path, sr_uuid)
if util.ioretry(lambda: util.pathexists(newpath)):
if len(util.ioretry(lambda: util.listdir(newpath))) != 0:
self.detach(sr_uuid)
raise xs_errors.XenError('SRExists')
else:
try:
util.ioretry(lambda: util.makedirs(newpath))
except util.CommandException, inst:
if inst.code != errno.EEXIST:
self.detach(sr_uuid)
raise xs_errors.XenError(
'NFSCreate',
opterr='remote directory creation error is %d' %
inst.code)
self.detach(sr_uuid)
def _checkmount(self):
return util.pathexists(self.path) \
and util.ismount(self.path)
def checkmount(self):
return util.ioretry(lambda: ((util.pathexists(self.mountpoint) and \
util.ismount(self.mountpoint)) and \
util.pathexists(self.linkpath)))
def _lvmBugCleanup(path):
# the device should not exist at this point. If it does, this was an LVM
# bug, and we manually clean up after LVM here
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
mapperPath = "/dev/mapper/" + mapperDevice
nodeExists = False
cmd = [CMD_DMSETUP, "status", mapperDevice]
try:
util.pread(cmd, expect_rc=1)
except util.CommandException, e:
if e.code == 0:
nodeExists = True
if not util.pathexists(mapperPath) and not nodeExists:
return
util.SMlog("_lvmBugCleanup: seeing dm file %s" % mapperPath)
# destroy the dm device
if nodeExists:
util.SMlog("_lvmBugCleanup: removing dm device %s" % mapperDevice)
cmd = [CMD_DMSETUP, "remove", mapperDevice]
for i in range(LVM_FAIL_RETRIES):
try:
util.pread2(cmd)
break
except util.CommandException, e:
if i < LVM_FAIL_RETRIES - 1:
util.SMlog("Failed on try %d, retrying" % i)
def create(self, sr_uuid, size):
self.__check_license()
if self.checkmount():
raise xs_errors.XenError('SMBAttached')
try:
self.mount()
except SMBException, exc:
try:
os.rmdir(self.mountpoint)
except:
pass
raise xs_errors.XenError('SMBMount', opterr=exc.errstr)
if util.ioretry(lambda: util.pathexists(self.linkpath)):
if len(util.ioretry(lambda: util.listdir(self.linkpath))) != 0:
self.detach(sr_uuid)
raise xs_errors.XenError('SRExists')
else:
try:
util.ioretry(lambda: util.makedirs(self.linkpath))
os.symlink(self.linkpath, self.path)
except util.CommandException, inst:
if inst.code != errno.EEXIST:
try:
self.unmount(self.mountpoint, True)
except SMBException:
util.logException('SMBSR.unmount()')
raise xs_errors.XenError(
'SMBCreate',
def load(self, vdi_uuid):
self.lock = self.sr.lock
self.sr.srcmd.params['o_direct'] = self.sr.o_direct
if self.sr.srcmd.cmd == "vdi_create":
self.vdi_type = vhdutil.VDI_TYPE_VHD
if self.sr.srcmd.params.has_key("vdi_sm_config") and \
self.sr.srcmd.params["vdi_sm_config"].has_key("type"):
vdi_type = self.sr.srcmd.params["vdi_sm_config"]["type"]
if not self.VDI_TYPE.get(vdi_type):
raise xs_errors.XenError('VDIType',
opterr='Invalid VDI type %s' % vdi_type)
self.vdi_type = self.VDI_TYPE[vdi_type]
self.path = os.path.join(self.sr.path, "%s%s" % \
(vdi_uuid, vhdutil.FILE_EXTN[self.vdi_type]))
else:
found = self._find_path_with_retries(vdi_uuid)
if not found:
if self.sr.srcmd.cmd == "vdi_delete":
# Could be delete for CBT log file
self.path = os.path.join(self.sr.path, "%s.%s" %
(vdi_uuid, self.PARAM_VHD))
return
if self.sr.srcmd.cmd == "vdi_attach_from_config":
return
raise xs_errors.XenError('VDIUnavailable',
opterr="VDI %s not found" % vdi_uuid)
if self.vdi_type == vhdutil.VDI_TYPE_VHD and \
self.sr.__dict__.get("vhds") and self.sr.vhds.get(vdi_uuid):
# VHD info already preloaded: use it instead of querying directly
vhdInfo = self.sr.vhds[vdi_uuid]
self.utilisation = vhdInfo.sizePhys
self.size = vhdInfo.sizeVirt
self.hidden = vhdInfo.hidden
if self.hidden:
self.managed = False
self.parent = vhdInfo.parentUuid
if self.parent:
self.sm_config_override = {'vhd-parent':self.parent}
else:
self.sm_config_override = {'vhd-parent':None}
return
try:
# Change to the SR directory in case parent
# locator field path has changed
os.chdir(self.sr.path)
except Exception as chdir_exception:
util.SMlog("Unable to change to SR directory, SR unavailable, %s",
str(chdir_exception))
raise xs_errors.XenError('SRUnavailable', opterr=str(chdir_exception))
if util.ioretry(lambda: util.pathexists(self.path)):
try:
st = util.ioretry(lambda: os.stat(self.path))
self.utilisation = long(st.st_size)
except util.CommandException, inst:
if inst.code == errno.EIO:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
else:
raise xs_errors.XenError('VDIType', \
opterr='Invalid VDI type %s' % self.vdi_type)
if self.vdi_type == vhdutil.VDI_TYPE_RAW:
self.exists = True
self.size = self.utilisation
self.sm_config_override = {'type':self.PARAM_RAW}
return
if self.vdi_type == CBTLOG_TAG:
self.exists = True
self.size = self.utilisation
return
try:
# The VDI might be activated in R/W mode so the VHD footer
# won't be valid, use the back-up one instead.
diskinfo = util.ioretry(lambda: self._query_info(self.path,
True))
if diskinfo.has_key('parent'):
self.parent = diskinfo['parent']
self.sm_config_override = {'vhd-parent':self.parent}
else:
self.sm_config_override = {'vhd-parent':None}
self.parent = ''
self.size = long(diskinfo['size']) * 1024 * 1024
self.hidden = long(diskinfo['hidden'])
if self.hidden:
self.managed = False
self.exists = True
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
def attach(self, sr_uuid, vdi_uuid):
util.SMlog("RBDVDI.attach for %s" % self.uuid)
vdi_ref = self.session.xenapi.VDI.get_by_uuid(vdi_uuid)
sm_config = self.session.xenapi.VDI.get_sm_config(vdi_ref)
if sm_config.has_key("snapshot-of"):
base_uuid = sm_config["snapshot-of"]
# it's a snapshot VDI
self.path = self.sr._get_snap_path(base_uuid, vdi_uuid)
else:
self.path = self.sr._get_path(vdi_uuid)
if not hasattr(self, 'xenstore_data'):
self.xenstore_data = {}
self.xenstore_data.update(
scsiutil.update_XS_SCSIdata(
self.uuid, scsiutil.gen_synthetic_page_data(self.uuid)))
self.xenstore_data['storage-type'] = 'rbd'
self.xenstore_data['vdi-type'] = self.vdi_type
self.attached = True
self.session.xenapi.VDI.remove_from_sm_config(vdi_ref, 'attached')
self.session.xenapi.VDI.add_to_sm_config(vdi_ref, 'attached', 'true')
self.size = int(self.session.xenapi.VDI.get_virtual_size(vdi_ref))
##########
vdis = self.session.xenapi.SR.get_VDIs(self.sr.sr_ref)
has_a_snapshot = False
for tmp_vdi in vdis:
tmp_vdi_uuid = self.session.xenapi.VDI.get_uuid(tmp_vdi)
tmp_sm_config = self.session.xenapi.VDI.get_sm_config(tmp_vdi)
if tmp_sm_config.has_key("snapshot-of"):
if tmp_sm_config["snapshot-of"] == vdi_uuid:
has_a_snapshot = True
if tmp_sm_config.has_key("sxm_mirror"):
sxm_mirror_vdi = vdi_uuid
########## SXM VDIs
if sm_config.has_key("base_mirror"):
if has_a_snapshot:
# it's a mirror vdi of storage migrating VM
# it's attached first
self.session.xenapi.VDI.add_to_sm_config(
vdi_ref, 'sxm_mirror', 'true')
# creating dm snapshot dev
self._setup_mirror(vdi_uuid, self.size)
else:
# it's a base vdi of storage migrating VM
# it's attached after mirror VDI and mirror snapshot VDI has been created
self._map_VHD(vdi_uuid)
########## not SXM VDIs
elif sm_config.has_key("snapshot-of"):
base_uuid = sm_config["snapshot-of"]
# it's a snapshot VDI, attach it as snapshot
self._map_SNAP(base_uuid, vdi_uuid)
else:
# it's not SXM VDI, just attach it
self._map_VHD(vdi_uuid)
if not util.pathexists(self.path):
raise xs_errors.XenError('VDIUnavailable',
opterr='Could not find: %s' % self.path)
return VDI.VDI.attach(self, self.sr.uuid, self.uuid)
def _cbt_log_exists(self, logpath):
return util.pathexists(logpath)
def _checkmount(self):
return util.ioretry(lambda: util.pathexists(self.path)) \
and util.ioretry(lambda: util.ismount(self.path))
def _checkmount(self):
return util.ioretry(lambda: util.pathexists(self.path) and \
(util.ismount(self.path) or \
util.pathexists(self.remotepath) and self._isbind()))
def load(self, vdi_uuid):
self.lock = self.sr.lock
if self.sr.srcmd.cmd == "vdi_create":
self.vdi_type = vhdutil.VDI_TYPE_VHD
if self.sr.srcmd.params.has_key("vdi_sm_config") and \
self.sr.srcmd.params["vdi_sm_config"].has_key("type"):
vdi_type = self.sr.srcmd.params["vdi_sm_config"]["type"]
if not self.VDI_TYPE.get(vdi_type):
raise xs_errors.XenError('VDIType',
opterr='Invalid VDI type %s' %
vdi_type)
self.vdi_type = self.VDI_TYPE[vdi_type]
self.path = os.path.join(self.sr.path, "%s%s" % \
(vdi_uuid, vhdutil.FILE_EXTN[self.vdi_type]))
else:
vhd_path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid, self.PARAM_VHD))
if util.ioretry(lambda: util.pathexists(vhd_path)):
self.vdi_type = vhdutil.VDI_TYPE_VHD
self.path = vhd_path
else:
raw_path = os.path.join(self.sr.path, "%s.%s" % \
(vdi_uuid, self.PARAM_RAW))
self.vdi_type = vhdutil.VDI_TYPE_RAW
self.path = raw_path
self.hidden = False
if not util.ioretry(lambda: util.pathexists(self.path)):
if self.sr.srcmd.cmd == "vdi_attach_from_config":
return
raise xs_errors.XenError('VDIUnavailable',
opterr="%s not found" % self.path)
if self.vdi_type == vhdutil.VDI_TYPE_VHD and \
self.sr.__dict__.get("vhds") and self.sr.vhds.get(vdi_uuid):
# VHD info already preloaded: use it instead of querying directly
vhdInfo = self.sr.vhds[vdi_uuid]
self.utilisation = vhdInfo.sizePhys
self.size = vhdInfo.sizeVirt
self.hidden = vhdInfo.hidden
if self.hidden:
self.managed = False
self.parent = vhdInfo.parentUuid
if self.parent:
self.sm_config_override = {'vhd-parent': self.parent}
else:
self.sm_config_override = {'vhd-parent': None}
return
try:
# Change to the SR directory in case parent
# locator field path has changed
os.chdir(self.sr.path)
except:
raise xs_errors.XenError('SRUnavailable')
if util.ioretry(lambda: util.pathexists(self.path)):
try:
st = util.ioretry(lambda: os.stat(self.path))
self.utilisation = long(st.st_size)
except util.CommandException, inst:
if inst.code == errno.EIO:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
else:
raise xs_errors.XenError('VDIType', \
opterr='Invalid VDI type %s' % self.vdi_type)
if self.vdi_type == vhdutil.VDI_TYPE_RAW:
self.exists = True
self.size = self.utilisation
self.sm_config_override = {'type': self.PARAM_RAW}
return
try:
diskinfo = util.ioretry(lambda: self._query_info(self.path))
if diskinfo.has_key('parent'):
self.parent = diskinfo['parent']
self.sm_config_override = {'vhd-parent': self.parent}
else:
self.sm_config_override = {'vhd-parent': None}
self.parent = ''
self.size = long(diskinfo['size']) * 1024 * 1024
self.hidden = long(diskinfo['hidden'])
if self.hidden:
self.managed = False
self.exists = True
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='Failed load VDI information %s' % self.path)
def test(self, name):
"""Test the flag"""
flagFile = os.path.join(self.nsDir, name)
return util.pathexists(flagFile)
def _getlockstatus(self):
if util.ioretry(lambda: util.pathexists(self.sr.path)):
if len(filter(self.match_locks, util.ioretry(lambda: \
util.listdir(self.sr.path)))) > 0:
return True
return False
