def detach(self, sr_uuid):
keys = []
pbdref = None
try:
pbdref = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
except:
pass
if self.dconf.has_key("SCSIid"):
self.mpathmodule.reset(self.dconf["SCSIid"], True) # explicitly unmap
keys.append("mpath-" + self.dconf["SCSIid"])
# Remove iscsi_sessions and multipathed keys
if pbdref <> None:
if self.cmd == "sr_detach":
keys += ["multipathed", "iscsi_sessions", "MPPEnabled"]
for key in keys:
try:
self.session.xenapi.PBD.remove_from_other_config(pbdref, key)
except:
pass
if util._decr_iscsiSR_refcount(self.targetIQN, sr_uuid) != 0:
return
if self.direct and util._containsVDIinuse(self):
return
if iscsilib._checkTGT(self.targetIQN):
try:
iscsilib.logout(self.target, self.targetIQN, all=True)
except util.CommandException, inst:
raise xs_errors.XenError("ISCSIQueryDaemon", opterr="error is %d" % inst.code)
if iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError("ISCSIQueryDaemon", opterr="Failed to logout from target")
def load(self, vdi_uuid):
# checks if the LUN exists
log("Calling VDI LOAD")
self.xapi_vdi = self._get_vdi_from_xapi(vdi_uuid)
log(self.xapi_vdi)
self.location = self.xapi_vdi.get('location', '')
self.size = int(self.xapi_vdi.get('size', 0))
self.iqn = self.location
self.target = self.sr.target
self.port = self.sr.port
self.exists = False
self.vdi_type = vhdutil.VDI_TYPE_VHD
# TODO support authentication
self.chapuser = ""
self.chappass = ""
self.attached = False
try:
self.attached = iscsilib._checkTGT(self.iqn)
except:
pass
def detach(self, sr_uuid, delete=False):
keys = []
pbdref = None
try:
pbdref = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
except:
pass
if 'SCSIid' in self.dconf:
self.mpathmodule.reset(self.dconf['SCSIid'], explicit_unmap=True)
keys.append("mpath-" + self.dconf['SCSIid'])
# Remove iscsi_sessions and multipathed keys
if pbdref != None:
if self.cmd == 'sr_detach':
keys += ["multipathed", "iscsi_sessions", "MPPEnabled"]
for key in keys:
try:
self.session.xenapi.PBD.remove_from_other_config(
pbdref, key)
except:
pass
if util._decr_iscsiSR_refcount(self.targetIQN, sr_uuid) != 0:
return
if self.direct and util._containsVDIinuse(self):
return
if iscsilib._checkTGT(self.targetIQN):
try:
iscsilib.logout(self.target, self.targetIQN, all=True)
if delete:
iscsilib.delete(self.targetIQN)
except util.CommandException as inst:
raise xs_errors.XenError('ISCSIQueryDaemon', \
opterr='error is %d' % inst.code)
if iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIQueryDaemon', \
opterr='Failed to logout from target')
self.attached = False
def load(self, sr_uuid):
if not sr_uuid:
# This is a probe call, generate a temp sr_uuid
sr_uuid = util.gen_uuid()
driver = SR.driver('iscsi')
if self.original_srcmd.dconf.has_key('target'):
self.original_srcmd.dconf['targetlist'] = self.original_srcmd.dconf['target']
iscsi = driver(self.original_srcmd, sr_uuid)
self.iscsiSRs = []
self.iscsiSRs.append(iscsi)
if self.dconf['target'].find(',') == 0 or self.dconf['targetIQN'] == "*":
# Instantiate multiple sessions
self.iscsiSRs = []
if self.dconf['targetIQN'] == "*":
IQN = "any"
else:
IQN = self.dconf['targetIQN']
dict = {}
IQNstring = ""
IQNs = []
try:
if self.dconf.has_key('multiSession'):
IQNs = self.dconf['multiSession'].split("|")
for IQN in IQNs:
if IQN:
dict[IQN] = ""
else:
try:
IQNs.remove(IQN)
except:
# Exceptions are not expected but just in case
pass
# Order in multiSession must be preserved. It is important for dual-controllers.
# IQNstring cannot be built with a dictionary iteration because of this
IQNstring = self.dconf['multiSession']
else:
for tgt in self.dconf['target'].split(','):
try:
tgt_ip = util._convertDNS(tgt)
except:
raise xs_errors.XenError('DNSError')
iscsilib.ensure_daemon_running_ok(iscsi.localIQN)
map = iscsilib.discovery(tgt_ip,iscsi.port,iscsi.chapuser,iscsi.chappassword,targetIQN=IQN)
util.SMlog("Discovery for IP %s returned %s" % (tgt,map))
for i in range(0,len(map)):
(portal,tpgt,iqn) = map[i]
(ipaddr, port) = iscsilib.parse_IP_port(portal)
try:
util._testHost(ipaddr, long(port), 'ISCSITarget')
except:
util.SMlog("Target Not reachable: (%s:%s)" % (ipaddr, port))
continue
key = "%s,%s,%s" % (ipaddr,port,iqn)
dict[key] = ""
# Again, do not mess up with IQNs order. Dual controllers will benefit from that
if IQNstring == "":
# Compose the IQNstring first
for key in dict.iterkeys(): IQNstring += "%s|" % key
# Reinitialize and store iterator
key_iterator = dict.iterkeys()
else:
key_iterator = IQNs
# Now load the individual iSCSI base classes
for key in key_iterator:
(ipaddr,port,iqn) = key.split(',')
srcmd_copy = copy.deepcopy(self.original_srcmd)
srcmd_copy.dconf['target'] = ipaddr
srcmd_copy.dconf['targetIQN'] = iqn
srcmd_copy.dconf['multiSession'] = IQNstring
util.SMlog("Setting targetlist: %s" % srcmd_copy.dconf['targetlist'])
self.iscsiSRs.append(driver(srcmd_copy, sr_uuid))
pbd = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
if pbd <> None and not self.dconf.has_key('multiSession'):
dconf = self.session.xenapi.PBD.get_device_config(pbd)
dconf['multiSession'] = IQNstring
self.session.xenapi.PBD.set_device_config(pbd, dconf)
except:
util.logException("LVHDoISCSISR.load")
self.iscsi = self.iscsiSRs[0]
# Be extremely careful not to throw exceptions here since this function
# is the main one used by all operations including probing and creating
pbd = None
try:
pbd = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
except:
pass
# Apart from the upgrade case, user must specify a SCSIid
if not self.dconf.has_key('SCSIid'):
# Dual controller issue
self.LUNs = {} # Dict for LUNs from all the iscsi objects
for ii in range(0, len(self.iscsiSRs)):
self.iscsi = self.iscsiSRs[ii]
self._LUNprint(sr_uuid)
for key in self.iscsi.LUNs:
self.LUNs[key] = self.iscsi.LUNs[key]
self.print_LUNs_XML()
self.iscsi = self.iscsiSRs[0] # back to original value
raise xs_errors.XenError('ConfigSCSIid')
self.SCSIid = self.dconf['SCSIid']
# This block checks if the first iscsi target contains the right SCSIid.
# If not it scans the other iscsi targets because chances are that more
# than one controller is present
dev_match = False
forced_login = False
# No need to check if only one iscsi target is present
if len(self.iscsiSRs) == 1:
pass
else:
target_success = False
attempt_discovery = False
for iii in range(0, len(self.iscsiSRs)):
# Check we didn't leave any iscsi session open
# If exceptions happened before, the cleanup function has worked on the right target.
if forced_login == True:
try:
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
iscsilib.logout(self.iscsi.target, self.iscsi.targetIQN)
forced_login = False
except:
raise xs_errors.XenError('ISCSILogout')
self.iscsi = self.iscsiSRs[iii]
util.SMlog("path %s" %self.iscsi.path)
util.SMlog("iscsci data: targetIQN %s, portal %s" % (self.iscsi.targetIQN, self.iscsi.target))
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
if not iscsilib._checkTGT(self.iscsi.targetIQN):
attempt_discovery = True
try:
# Ensure iscsi db has been populated
map = iscsilib.discovery(
self.iscsi.target,
self.iscsi.port,
self.iscsi.chapuser,
self.iscsi.chappassword,
targetIQN=self.iscsi.targetIQN)
if len(map) == 0:
util.SMlog("Discovery for iscsi data targetIQN %s,"
" portal %s returned empty list"
" Trying another path if available" %
(self.iscsi.targetIQN,
self.iscsi.target))
continue
except:
util.SMlog("Discovery failed for iscsi data targetIQN"
" %s, portal %s. Trying another path if"
" available" %
(self.iscsi.targetIQN, self.iscsi.target))
continue
try:
iscsilib.login(self.iscsi.target,
self.iscsi.targetIQN,
self.iscsi.chapuser,
self.iscsi.chappassword,
self.iscsi.incoming_chapuser,
self.iscsi.incoming_chappassword,
self.mpath == "true")
except:
util.SMlog("Login failed for iscsi data targetIQN %s,"
" portal %s. Trying another path"
" if available" %
(self.iscsi.targetIQN, self.iscsi.target))
continue
target_success = True;
forced_login = True
# A session should be active.
if not util.wait_for_path(self.iscsi.path, ISCSISR.MAX_TIMEOUT):
util.SMlog("%s has no associated LUNs" % self.iscsi.targetIQN)
continue
scsiid_path = "/dev/disk/by-id/scsi-" + self.SCSIid
if not util.wait_for_path(scsiid_path, ISCSISR.MAX_TIMEOUT):
util.SMlog("%s not found" %scsiid_path)
continue
for file in filter(self.iscsi.match_lun, util.listdir(self.iscsi.path)):
lun_path = os.path.join(self.iscsi.path,file)
lun_dev = scsiutil.getdev(lun_path)
try:
lun_scsiid = scsiutil.getSCSIid(lun_dev)
except:
util.SMlog("getSCSIid failed on %s in iscsi %s: LUN"
" offline or iscsi path down" %
(lun_dev, self.iscsi.path))
continue
util.SMlog("dev from lun %s %s" %(lun_dev, lun_scsiid))
if lun_scsiid == self.SCSIid:
util.SMlog("lun match in %s" %self.iscsi.path)
dev_match = True
# No more need to raise ISCSITarget exception.
# Resetting attempt_discovery
attempt_discovery = False
break
if dev_match:
if iii == 0:
break
util.SMlog("IQN reordering needed")
new_iscsiSRs = []
IQNs = {}
IQNstring = ""
# iscsiSRs can be seen as a circular buffer: the head now is the matching one
for kkk in range(iii, len(self.iscsiSRs)) + range(0, iii):
new_iscsiSRs.append(self.iscsiSRs[kkk])
ipaddr = self.iscsiSRs[kkk].target
port = self.iscsiSRs[kkk].port
iqn = self.iscsiSRs[kkk].targetIQN
key = "%s,%s,%s" % (ipaddr,port,iqn)
# The final string must preserve the order without repetition
if not IQNs.has_key(key):
IQNs[key] = ""
IQNstring += "%s|" % key
util.SMlog("IQNstring is now %s" %IQNstring)
self.iscsiSRs = new_iscsiSRs
util.SMlog("iqn %s is leading now" %self.iscsiSRs[0].targetIQN)
# Updating pbd entry, if any
try:
pbd = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
if pbd <> None and self.dconf.has_key('multiSession'):
util.SMlog("Updating multiSession in PBD")
dconf = self.session.xenapi.PBD.get_device_config(pbd)
dconf['multiSession'] = IQNstring
self.session.xenapi.PBD.set_device_config(pbd, dconf)
except:
pass
break
if not target_success and attempt_discovery:
raise xs_errors.XenError('ISCSITarget')
# Check for any unneeded open iscsi sessions
if forced_login == True:
try:
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
iscsilib.logout(self.iscsi.target, self.iscsi.targetIQN)
forced_login = False
except:
raise xs_errors.XenError('ISCSILogout')
self._pathrefresh(LVHDoISCSISR, load = False)
LVHDSR.LVHDSR.load(self, sr_uuid)
def attached(self):
if not self._attached:
self._attached = False
self._attached = iscsilib._checkTGT(self.targetIQN)
return self._attached
def attach(self, sr_uuid):
self._mpathHandle()
multiTargets = False
npaths = 0
try:
pbdref = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
if pbdref:
other_config = self.session.xenapi.PBD.get_other_config(pbdref)
multiTargets = util.sessions_less_than_targets(
other_config, self.dconf)
except:
pass
if not self.attached or multiTargets:
# Verify iSCSI target and port
if 'multihomelist' in self.dconf and 'multiSession' not in self.dconf:
targetlist = self.dconf['multihomelist'].split(',')
else:
targetlist = ['%s:%d' % (self.target, self.port)]
conn = False
for val in targetlist:
(target, port) = iscsilib.parse_IP_port(val)
try:
util._testHost(target, long(port), 'ISCSITarget')
self.target = target
self.port = long(port)
conn = True
break
except:
pass
if not conn:
raise xs_errors.XenError('ISCSITarget')
# Test and set the initiatorname file
iscsilib.ensure_daemon_running_ok(self.localIQN)
# Check to see if auto attach was set
if not iscsilib._checkTGT(self.targetIQN) or multiTargets:
try:
map = []
if 'any' != self.targetIQN:
try:
map = iscsilib.get_node_records(self.targetIQN)
except:
# Pass the exception that is thrown, when there
# are no nodes
pass
if len(map) == 0:
map = iscsilib.discovery(
self.target, self.port, self.chapuser,
self.chappassword, self.targetIQN,
iscsilib.get_iscsi_interfaces())
if len(map) == 0:
self._scan_IQNs()
raise xs_errors.XenError(
'ISCSIDiscovery', opterr='check target settings')
for i in range(0, len(map)):
(portal, tpgt, iqn) = map[i]
try:
(ipaddr, port) = iscsilib.parse_IP_port(portal)
if not self.multihomed and ipaddr != self.target:
continue
util._testHost(ipaddr, long(port), 'ISCSITarget')
util.SMlog("Logging in to [%s:%s]" %
(ipaddr, port))
iscsilib.login(portal, iqn, self.chapuser,
self.chappassword,
self.incoming_chapuser,
self.incoming_chappassword,
self.mpath == "true")
npaths = npaths + 1
except Exception as e:
# Exceptions thrown in login are acknowledged,
# the rest of exceptions are ignored since some of the
# paths in multipath may not be reachable
if str(e).startswith('ISCSI login'):
raise
else:
pass
if not iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIDevice', \
opterr='during login')
# Allow the devices to settle
time.sleep(5)
except util.CommandException as inst:
raise xs_errors.XenError('ISCSILogin', \
opterr='code is %d' % inst.code)
self.attached = True
self._initPaths()
util._incr_iscsiSR_refcount(self.targetIQN, sr_uuid)
IQNs = []
if "multiSession" in self.dconf:
IQNs = ""
for iqn in self.dconf['multiSession'].split("|"):
if len(iqn): IQNs += iqn.split(',')[2]
else:
IQNs.append(self.targetIQN)
sessions = 0
paths = iscsilib.get_IQN_paths()
for path in paths:
try:
if util.get_single_entry(os.path.join(path,
'targetname')) in IQNs:
sessions += 1
util.SMlog("IQN match. Incrementing sessions to %d" %
sessions)
except:
util.SMlog("Failed to read targetname path," \
+ "iscsi_sessions value may be incorrect")
if pbdref:
# Just to be safe in case of garbage left during crashes
# we remove the key and add it
self.session.xenapi.PBD.remove_from_other_config(
pbdref, "iscsi_sessions")
self.session.xenapi.PBD.add_to_other_config(
pbdref, "iscsi_sessions", str(sessions))
if 'SCSIid' in self.dconf:
if self.mpath == 'true':
self.mpathmodule.refresh(self.dconf['SCSIid'], 0)
devs = os.listdir("/dev/disk/by-scsid/%s" % self.dconf['SCSIid'])
for dev in devs:
realdev = os.path.realpath("/dev/disk/by-scsid/%s/%s" %
(self.dconf['SCSIid'], dev))
util.set_scheduler(realdev.split("/")[-1], "noop")
def load(self, sr_uuid):
self.sr_vditype = 'phy'
self.discoverentry = 0
self.default_vdi_visibility = False
# Required parameters
if not self.dconf.has_key('target') or not self.dconf['target']:
raise xs_errors.XenError('ConfigTargetMissing')
# we are no longer putting hconf in the xml.
# Instead we pass a session and host ref and let the SM backend query XAPI itself
try:
if not self.dconf.has_key('localIQN'):
self.localIQN = self.session.xenapi.host.get_other_config(self.host_ref)['iscsi_iqn']
else:
self.localIQN = self.dconf['localIQN']
except:
raise xs_errors.XenError('ConfigISCSIIQNMissing')
# Check for empty string
if not self.localIQN:
raise xs_errors.XenError('ConfigISCSIIQNMissing')
try:
self.target = util._convertDNS(self.dconf['target'].split(',')[0])
except:
raise xs_errors.XenError('DNSError')
self.targetlist = self.target
if self.dconf.has_key('targetlist'):
self.targetlist = self.dconf['targetlist']
# Optional parameters
self.chapuser = ""
self.chappassword = ""
if self.dconf.has_key('chapuser') \
and (self.dconf.has_key('chappassword') or self.dconf.has_key('chappassword_secret')):
self.chapuser = self.dconf['chapuser']
if self.dconf.has_key('chappassword_secret'):
self.chappassword = util.get_secret(self.session, self.dconf['chappassword_secret'])
else:
self.chappassword = self.dconf['chappassword']
self.incoming_chapuser = ""
self.incoming_chappassword = ""
if self.dconf.has_key('incoming_chapuser') \
and (self.dconf.has_key('incoming_chappassword') or self.dconf.has_key('incoming_chappassword_secret')):
self.incoming_chapuser = self.dconf['incoming_chapuser']
if self.dconf.has_key('incoming_chappassword_secret'):
self.incoming_chappassword = util.get_secret(self.session, self.dconf['incoming_chappassword_secret'])
else:
self.incoming_chappassword = self.dconf['incoming_chappassword']
self.port = DEFAULT_PORT
if self.dconf.has_key('port') and self.dconf['port']:
try:
self.port = long(self.dconf['port'])
except:
raise xs_errors.XenError('ISCSIPort')
if self.port > MAXPORT or self.port < 1:
raise xs_errors.XenError('ISCSIPort')
# For backwards compatibility
if self.dconf.has_key('usediscoverynumber'):
self.discoverentry = self.dconf['usediscoverynumber']
self.multihomed = False
if self.dconf.has_key('multihomed'):
if self.dconf['multihomed'] == "true":
self.multihomed = True
elif self.mpath == 'true':
self.multihomed = True
if not self.dconf.has_key('targetIQN') or not self.dconf['targetIQN']:
self._scan_IQNs()
raise xs_errors.XenError('ConfigTargetIQNMissing')
self.targetIQN = self.dconf['targetIQN']
self.attached = False
try:
self.attached = iscsilib._checkTGT(self.targetIQN)
except:
pass
self._initPaths()
def attach(self, sr_uuid):
self._mpathHandle()
npaths=0
if not self.attached:
# Verify iSCSI target and port
if self.dconf.has_key('multihomelist') and not self.dconf.has_key('multiSession'):
targetlist = self.dconf['multihomelist'].split(',')
else:
targetlist = ['%s:%d' % (self.target,self.port)]
conn = False
for val in targetlist:
(target,port) = val.split(':')
try:
util._testHost(target, long(port), 'ISCSITarget')
self.target = target
self.port = long(port)
conn = True
break
except:
pass
if not conn:
raise xs_errors.XenError('ISCSITarget')
# Test and set the initiatorname file
iscsilib.ensure_daemon_running_ok(self.localIQN)
# Check to see if auto attach was set
if not iscsilib._checkTGT(self.targetIQN):
try:
map = iscsilib.discovery(self.target, self.port, self.chapuser, \
self.chappassword, targetIQN=self.targetIQN)
iqn = ''
if len(map) == 0:
self._scan_IQNs()
raise xs_errors.XenError('ISCSIDiscovery',
opterr='check target settings')
for i in range(0,len(map)):
(portal,tpgt,iqn) = map[i]
try:
(ipaddr,port) = portal.split(',')[0].split(':')
if not self.multihomed and ipaddr != self.target:
continue
util._testHost(ipaddr, long(port), 'ISCSITarget')
util.SMlog("Logging in to [%s:%s]" % (ipaddr,port))
iscsilib.login(portal, iqn, self.chapuser, self.chappassword, self.incoming_chapuser, self.incoming_chappassword)
npaths = npaths + 1
except:
pass
if not iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIDevice', \
opterr='during login')
# Allow the devices to settle
time.sleep(5)
except util.CommandException, inst:
raise xs_errors.XenError('ISCSILogin', \
opterr='code is %d' % inst.code)
self.attached = True
def load(self, sr_uuid):
if not sr_uuid:
# This is a probe call, generate a temp sr_uuid
sr_uuid = util.gen_uuid()
driver = SR.driver('iscsi')
if self.original_srcmd.dconf.has_key('target'):
self.original_srcmd.dconf[
'targetlist'] = self.original_srcmd.dconf['target']
iscsi = driver(self.original_srcmd, sr_uuid)
self.iscsiSRs = []
self.iscsiSRs.append(iscsi)
if self.dconf['target'].find(
',') == 0 or self.dconf['targetIQN'] == "*":
# Instantiate multiple sessions
self.iscsiSRs = []
if self.dconf['targetIQN'] == "*":
IQN = "any"
else:
IQN = self.dconf['targetIQN']
dict = {}
IQNstring = ""
IQNs = []
try:
if self.dconf.has_key('multiSession'):
IQNs = self.dconf['multiSession'].split("|")
for IQN in IQNs:
if IQN:
dict[IQN] = ""
else:
try:
IQNs.remove(IQN)
except:
# Exceptions are not expected but just in case
pass
# Order in multiSession must be preserved. It is important for dual-controllers.
# IQNstring cannot be built with a dictionary iteration because of this
IQNstring = self.dconf['multiSession']
else:
for tgt in self.dconf['target'].split(','):
try:
tgt_ip = util._convertDNS(tgt)
except:
raise xs_errors.XenError('DNSError')
iscsilib.ensure_daemon_running_ok(iscsi.localIQN)
map = iscsilib.discovery(tgt_ip,
iscsi.port,
iscsi.chapuser,
iscsi.chappassword,
targetIQN=IQN)
util.SMlog("Discovery for IP %s returned %s" %
(tgt, map))
for i in range(0, len(map)):
(portal, tpgt, iqn) = map[i]
(ipaddr, port) = iscsilib.parse_IP_port(portal)
try:
util._testHost(ipaddr, long(port),
'ISCSITarget')
except:
util.SMlog("Target Not reachable: (%s:%s)" %
(ipaddr, port))
continue
key = "%s,%s,%s" % (ipaddr, port, iqn)
dict[key] = ""
# Again, do not mess up with IQNs order. Dual controllers will benefit from that
if IQNstring == "":
# Compose the IQNstring first
for key in dict.iterkeys():
IQNstring += "%s|" % key
# Reinitialize and store iterator
key_iterator = dict.iterkeys()
else:
key_iterator = IQNs
# Now load the individual iSCSI base classes
for key in key_iterator:
(ipaddr, port, iqn) = key.split(',')
srcmd_copy = copy.deepcopy(self.original_srcmd)
srcmd_copy.dconf['target'] = ipaddr
srcmd_copy.dconf['targetIQN'] = iqn
srcmd_copy.dconf['multiSession'] = IQNstring
util.SMlog("Setting targetlist: %s" %
srcmd_copy.dconf['targetlist'])
self.iscsiSRs.append(driver(srcmd_copy, sr_uuid))
pbd = util.find_my_pbd(self.session, self.host_ref,
self.sr_ref)
if pbd <> None and not self.dconf.has_key('multiSession'):
dconf = self.session.xenapi.PBD.get_device_config(pbd)
dconf['multiSession'] = IQNstring
self.session.xenapi.PBD.set_device_config(pbd, dconf)
except:
util.logException("OCFSoISCSISR.load")
self.iscsi = self.iscsiSRs[0]
# Be extremely careful not to throw exceptions here since this function
# is the main one used by all operations including probing and creating
pbd = None
try:
pbd = util.find_my_pbd(self.session, self.host_ref, self.sr_ref)
except:
pass
# Apart from the upgrade case, user must specify a SCSIid
if not self.dconf.has_key('SCSIid'):
# Dual controller issue
self.LUNs = {} # Dict for LUNs from all the iscsi objects
for ii in range(0, len(self.iscsiSRs)):
self.iscsi = self.iscsiSRs[ii]
self._LUNprint(sr_uuid)
for key in self.iscsi.LUNs:
self.LUNs[key] = self.iscsi.LUNs[key]
self.print_LUNs_XML()
self.iscsi = self.iscsiSRs[0] # back to original value
raise xs_errors.XenError('ConfigSCSIid')
self.SCSIid = self.dconf['SCSIid']
# This block checks if the first iscsi target contains the right SCSIid.
# If not it scans the other iscsi targets because chances are that more
# than one controller is present
dev_match = False
forced_login = False
# No need to check if only one iscsi target is present
if len(self.iscsiSRs) == 1:
pass
else:
target_success = False
attempt_discovery = False
for iii in range(0, len(self.iscsiSRs)):
# Check we didn't leave any iscsi session open
# If exceptions happened before, the cleanup function has worked on the right target.
if forced_login == True:
try:
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
iscsilib.logout(self.iscsi.target,
self.iscsi.targetIQN)
forced_login = False
except:
raise xs_errors.XenError('ISCSILogout')
self.iscsi = self.iscsiSRs[iii]
util.SMlog("path %s" % self.iscsi.path)
util.SMlog("iscsci data: targetIQN %s, portal %s" %
(self.iscsi.targetIQN, self.iscsi.target))
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
if not iscsilib._checkTGT(self.iscsi.targetIQN):
attempt_discovery = True
try:
# Ensure iscsi db has been populated
map = iscsilib.discovery(
self.iscsi.target,
self.iscsi.port,
self.iscsi.chapuser,
self.iscsi.chappassword,
targetIQN=self.iscsi.targetIQN)
if len(map) == 0:
util.SMlog(
"Discovery for iscsi data targetIQN %s,"
" portal %s returned empty list"
" Trying another path if available" %
(self.iscsi.targetIQN, self.iscsi.target))
continue
except:
util.SMlog("Discovery failed for iscsi data targetIQN"
" %s, portal %s. Trying another path if"
" available" %
(self.iscsi.targetIQN, self.iscsi.target))
continue
try:
iscsilib.login(self.iscsi.target, self.iscsi.targetIQN,
self.iscsi.chapuser,
self.iscsi.chappassword,
self.iscsi.incoming_chapuser,
self.iscsi.incoming_chappassword,
self.mpath == "true")
except:
util.SMlog("Login failed for iscsi data targetIQN %s,"
" portal %s. Trying another path"
" if available" %
(self.iscsi.targetIQN, self.iscsi.target))
continue
target_success = True
forced_login = True
# A session should be active.
if not util.wait_for_path(self.iscsi.path,
ISCSISR.MAX_TIMEOUT):
util.SMlog("%s has no associated LUNs" %
self.iscsi.targetIQN)
continue
scsiid_path = "/dev/disk/by-id/scsi-" + self.SCSIid
if not util.wait_for_path(scsiid_path, ISCSISR.MAX_TIMEOUT):
util.SMlog("%s not found" % scsiid_path)
continue
for file in filter(self.iscsi.match_lun,
util.listdir(self.iscsi.path)):
lun_path = os.path.join(self.iscsi.path, file)
lun_dev = scsiutil.getdev(lun_path)
try:
lun_scsiid = scsiutil.getSCSIid(lun_dev)
except:
util.SMlog("getSCSIid failed on %s in iscsi %s: LUN"
" offline or iscsi path down" %
(lun_dev, self.iscsi.path))
continue
util.SMlog("dev from lun %s %s" % (lun_dev, lun_scsiid))
if lun_scsiid == self.SCSIid:
util.SMlog("lun match in %s" % self.iscsi.path)
dev_match = True
# No more need to raise ISCSITarget exception.
# Resetting attempt_discovery
attempt_discovery = False
break
if dev_match:
if iii == 0:
break
util.SMlog("IQN reordering needed")
new_iscsiSRs = []
IQNs = {}
IQNstring = ""
# iscsiSRs can be seen as a circular buffer: the head now is the matching one
for kkk in range(iii, len(self.iscsiSRs)) + range(0, iii):
new_iscsiSRs.append(self.iscsiSRs[kkk])
ipaddr = self.iscsiSRs[kkk].target
port = self.iscsiSRs[kkk].port
iqn = self.iscsiSRs[kkk].targetIQN
key = "%s,%s,%s" % (ipaddr, port, iqn)
# The final string must preserve the order without repetition
if not IQNs.has_key(key):
IQNs[key] = ""
IQNstring += "%s|" % key
util.SMlog("IQNstring is now %s" % IQNstring)
self.iscsiSRs = new_iscsiSRs
util.SMlog("iqn %s is leading now" %
self.iscsiSRs[0].targetIQN)
# Updating pbd entry, if any
try:
pbd = util.find_my_pbd(self.session, self.host_ref,
self.sr_ref)
if pbd <> None and self.dconf.has_key('multiSession'):
util.SMlog("Updating multiSession in PBD")
dconf = self.session.xenapi.PBD.get_device_config(
pbd)
dconf['multiSession'] = IQNstring
self.session.xenapi.PBD.set_device_config(
pbd, dconf)
except:
pass
break
if not target_success and attempt_discovery:
raise xs_errors.XenError('ISCSITarget')
# Check for any unneeded open iscsi sessions
if forced_login == True:
try:
iscsilib.ensure_daemon_running_ok(self.iscsi.localIQN)
iscsilib.logout(self.iscsi.target, self.iscsi.targetIQN)
forced_login = False
except:
raise xs_errors.XenError('ISCSILogout')
self._pathrefresh(OCFSoISCSISR, load=False)
OCFSSR.OCFSSR.load(self, sr_uuid)
def attach(self, sr_uuid):
self._mpathHandle()
npaths=0
if not self.attached:
# Verify iSCSI target and port
if self.dconf.has_key('multihomelist') and not self.dconf.has_key('multiSession'):
targetlist = self.dconf['multihomelist'].split(',')
else:
targetlist = ['%s:%d' % (self.target,self.port)]
conn = False
for val in targetlist:
(target, port) = iscsilib.parse_IP_port(val)
try:
util._testHost(target, long(port), 'ISCSITarget')
self.target = target
self.port = long(port)
conn = True
break
except:
pass
if not conn:
raise xs_errors.XenError('ISCSITarget')
# Test and set the initiatorname file
iscsilib.ensure_daemon_running_ok(self.localIQN)
# Check to see if auto attach was set
if not iscsilib._checkTGT(self.targetIQN):
try:
map = []
if 'any' != self.targetIQN:
try:
map = iscsilib.get_node_records(self.targetIQN)
except:
# Pass the exception that is thrown, when there
# are no nodes
pass
if len(map) == 0:
map = iscsilib.discovery(self.target, self.port,
self.chapuser, self.chappassword,
self.targetIQN,
self._get_iscsi_interfaces())
if len(map) == 0:
self._scan_IQNs()
raise xs_errors.XenError('ISCSIDiscovery',
opterr='check target settings')
for i in range(0,len(map)):
(portal,tpgt,iqn) = map[i]
try:
(ipaddr, port) = iscsilib.parse_IP_port(portal)
if not self.multihomed and ipaddr != self.target:
continue
util._testHost(ipaddr, long(port), 'ISCSITarget')
util.SMlog("Logging in to [%s:%s]" % (ipaddr,port))
iscsilib.login(portal, iqn, self.chapuser, self.chappassword, self.incoming_chapuser, self.incoming_chappassword)
npaths = npaths + 1
except Exception, e:
# Exceptions thrown in login are acknowledged,
# the rest of exceptions are ignored since some of the
# paths in multipath may not be reachable
if str(e) == 'ISCSI login failed, verify CHAP credentials':
raise
else:
pass
if not iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIDevice', \
opterr='during login')
# Allow the devices to settle
time.sleep(5)
except util.CommandException, inst:
raise xs_errors.XenError('ISCSILogin', \
opterr='code is %d' % inst.code)
def attach(self, sr_uuid):
self._mpathHandle()
npaths = 0
if not self.attached:
# Verify iSCSI target and port
if self.dconf.has_key('multihomelist'
) and not self.dconf.has_key('multiSession'):
targetlist = self.dconf['multihomelist'].split(',')
else:
targetlist = ['%s:%d' % (self.target, self.port)]
conn = False
for val in targetlist:
(target, port) = iscsilib.parse_IP_port(val)
try:
util._testHost(target, long(port), 'ISCSITarget')
self.target = target
self.port = long(port)
conn = True
break
except:
pass
if not conn:
raise xs_errors.XenError('ISCSITarget')
# Test and set the initiatorname file
iscsilib.ensure_daemon_running_ok(self.localIQN)
# Check to see if auto attach was set
if not iscsilib._checkTGT(self.targetIQN):
try:
map = []
if 'any' != self.targetIQN:
try:
map = iscsilib.get_node_records(self.targetIQN)
except:
# Pass the exception that is thrown, when there
# are no nodes
pass
if len(map) == 0:
map = iscsilib.discovery(self.target, self.port,
self.chapuser,
self.chappassword,
self.targetIQN,
self._get_iscsi_interfaces())
if len(map) == 0:
self._scan_IQNs()
raise xs_errors.XenError(
'ISCSIDiscovery', opterr='check target settings')
for i in range(0, len(map)):
(portal, tpgt, iqn) = map[i]
try:
(ipaddr, port) = iscsilib.parse_IP_port(portal)
if not self.multihomed and ipaddr != self.target:
continue
util._testHost(ipaddr, long(port), 'ISCSITarget')
util.SMlog("Logging in to [%s:%s]" %
(ipaddr, port))
iscsilib.login(portal, iqn, self.chapuser,
self.chappassword,
self.incoming_chapuser,
self.incoming_chappassword,
self.mpath == "true")
npaths = npaths + 1
except Exception, e:
# Exceptions thrown in login are acknowledged,
# the rest of exceptions are ignored since some of the
# paths in multipath may not be reachable
if str(
e
) == 'ISCSI login failed, verify CHAP credentials':
raise
else:
pass
if not iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIDevice', \
opterr='during login')
# Allow the devices to settle
time.sleep(5)
except util.CommandException, inst:
raise xs_errors.XenError('ISCSILogin', \
opterr='code is %d' % inst.code)
def load(self, sr_uuid):
if self.force_tapdisk:
self.sr_vditype = 'aio'
else:
self.sr_vditype = 'phy'
self.discoverentry = 0
self.default_vdi_visibility = False
# Required parameters
if not self.dconf.has_key('target') or not self.dconf['target']:
raise xs_errors.XenError('ConfigTargetMissing')
# we are no longer putting hconf in the xml.
# Instead we pass a session and host ref and let the SM backend query XAPI itself
try:
if not self.dconf.has_key('localIQN'):
self.localIQN = self.session.xenapi.host.get_other_config(
self.host_ref)['iscsi_iqn']
else:
self.localIQN = self.dconf['localIQN']
except:
raise xs_errors.XenError('ConfigISCSIIQNMissing')
# Check for empty string
if not self.localIQN:
raise xs_errors.XenError('ConfigISCSIIQNMissing')
try:
self.target = util._convertDNS(self.dconf['target'].split(',')[0])
except:
raise xs_errors.XenError('DNSError')
self.targetlist = self.target
if self.dconf.has_key('targetlist'):
self.targetlist = self.dconf['targetlist']
# Optional parameters
self.chapuser = ""
self.chappassword = ""
if self.dconf.has_key('chapuser') \
and (self.dconf.has_key('chappassword') or self.dconf.has_key('chappassword_secret')):
self.chapuser = self.dconf['chapuser']
if self.dconf.has_key('chappassword_secret'):
self.chappassword = util.get_secret(
self.session, self.dconf['chappassword_secret'])
else:
self.chappassword = self.dconf['chappassword']
self.incoming_chapuser = ""
self.incoming_chappassword = ""
if self.dconf.has_key('incoming_chapuser') \
and (self.dconf.has_key('incoming_chappassword') or self.dconf.has_key('incoming_chappassword_secret')):
self.incoming_chapuser = self.dconf['incoming_chapuser']
if self.dconf.has_key('incoming_chappassword_secret'):
self.incoming_chappassword = util.get_secret(
self.session, self.dconf['incoming_chappassword_secret'])
else:
self.incoming_chappassword = self.dconf[
'incoming_chappassword']
self.port = DEFAULT_PORT
if self.dconf.has_key('port') and self.dconf['port']:
try:
self.port = long(self.dconf['port'])
except:
raise xs_errors.XenError('ISCSIPort')
if self.port > MAXPORT or self.port < 1:
raise xs_errors.XenError('ISCSIPort')
# For backwards compatibility
if self.dconf.has_key('usediscoverynumber'):
self.discoverentry = self.dconf['usediscoverynumber']
self.multihomed = False
if self.dconf.has_key('multihomed'):
if self.dconf['multihomed'] == "true":
self.multihomed = True
elif self.mpath == 'true':
self.multihomed = True
if not self.dconf.has_key('targetIQN') or not self.dconf['targetIQN']:
self._scan_IQNs()
raise xs_errors.XenError('ConfigTargetIQNMissing')
self.targetIQN = self.dconf['targetIQN']
self.attached = False
try:
self.attached = iscsilib._checkTGT(self.targetIQN)
except:
pass
self._initPaths()
def load(self, sr_uuid):
if self.force_tapdisk:
self.sr_vditype = "aio"
else:
self.sr_vditype = "phy"
self.discoverentry = 0
self.default_vdi_visibility = False
# Required parameters
if not self.dconf.has_key("target") or not self.dconf["target"]:
raise xs_errors.XenError("ConfigTargetMissing")
# we are no longer putting hconf in the xml.
# Instead we pass a session and host ref and let the SM backend query XAPI itself
try:
if not self.dconf.has_key("localIQN"):
self.localIQN = self.session.xenapi.host.get_other_config(self.host_ref)["iscsi_iqn"]
else:
self.localIQN = self.dconf["localIQN"]
except:
raise xs_errors.XenError("ConfigISCSIIQNMissing")
# Check for empty string
if not self.localIQN:
raise xs_errors.XenError("ConfigISCSIIQNMissing")
try:
self.target = util._convertDNS(self.dconf["target"].split(",")[0])
except:
raise xs_errors.XenError("DNSError")
self.targetlist = self.target
if self.dconf.has_key("targetlist"):
self.targetlist = self.dconf["targetlist"]
# Optional parameters
self.chapuser = ""
self.chappassword = ""
if self.dconf.has_key("chapuser") and (
self.dconf.has_key("chappassword") or self.dconf.has_key("chappassword_secret")
):
self.chapuser = self.dconf["chapuser"]
if self.dconf.has_key("chappassword_secret"):
self.chappassword = util.get_secret(self.session, self.dconf["chappassword_secret"])
else:
self.chappassword = self.dconf["chappassword"]
self.incoming_chapuser = ""
self.incoming_chappassword = ""
if self.dconf.has_key("incoming_chapuser") and (
self.dconf.has_key("incoming_chappassword") or self.dconf.has_key("incoming_chappassword_secret")
):
self.incoming_chapuser = self.dconf["incoming_chapuser"]
if self.dconf.has_key("incoming_chappassword_secret"):
self.incoming_chappassword = util.get_secret(self.session, self.dconf["incoming_chappassword_secret"])
else:
self.incoming_chappassword = self.dconf["incoming_chappassword"]
self.port = DEFAULT_PORT
if self.dconf.has_key("port") and self.dconf["port"]:
try:
self.port = long(self.dconf["port"])
except:
raise xs_errors.XenError("ISCSIPort")
if self.port > MAXPORT or self.port < 1:
raise xs_errors.XenError("ISCSIPort")
# For backwards compatibility
if self.dconf.has_key("usediscoverynumber"):
self.discoverentry = self.dconf["usediscoverynumber"]
self.multihomed = False
if self.dconf.has_key("multihomed"):
if self.dconf["multihomed"] == "true":
self.multihomed = True
elif self.mpath == "true":
self.multihomed = True
if not self.dconf.has_key("targetIQN") or not self.dconf["targetIQN"]:
self._scan_IQNs()
raise xs_errors.XenError("ConfigTargetIQNMissing")
self.targetIQN = self.dconf["targetIQN"]
self.attached = False
try:
self.attached = iscsilib._checkTGT(self.targetIQN)
except:
pass
self._initPaths()
def attached(self):
if not self._attached:
self._attached = False
self._attached = iscsilib._checkTGT(self.targetIQN)
return self._attached
def attach(self, sr_uuid):
self._mpathHandle()
npaths = 0
if not self.attached:
# Verify iSCSI target and port
if self.dconf.has_key('multihomelist'
) and not self.dconf.has_key('multiSession'):
targetlist = self.dconf['multihomelist'].split(',')
else:
targetlist = ['%s:%d' % (self.target, self.port)]
conn = False
for val in targetlist:
(target, port) = val.split(':')
try:
util._testHost(target, long(port), 'ISCSITarget')
self.target = target
self.port = long(port)
conn = True
break
except:
pass
if not conn:
raise xs_errors.XenError('ISCSITarget')
# Test and set the initiatorname file
iscsilib.ensure_daemon_running_ok(self.localIQN)
# Check to see if auto attach was set
if not iscsilib._checkTGT(self.targetIQN):
try:
map = iscsilib.discovery(self.target, self.port, self.chapuser, \
self.chappassword, targetIQN=self.targetIQN)
iqn = ''
if len(map) == 0:
self._scan_IQNs()
raise xs_errors.XenError(
'ISCSIDiscovery', opterr='check target settings')
for i in range(0, len(map)):
(portal, tpgt, iqn) = map[i]
try:
(ipaddr, port) = portal.split(',')[0].split(':')
if not self.multihomed and ipaddr != self.target:
continue
util._testHost(ipaddr, long(port), 'ISCSITarget')
util.SMlog("Logging in to [%s:%s]" %
(ipaddr, port))
iscsilib.login(portal, iqn, self.chapuser,
self.chappassword,
self.incoming_chapuser,
self.incoming_chappassword)
npaths = npaths + 1
except:
pass
if not iscsilib._checkTGT(self.targetIQN):
raise xs_errors.XenError('ISCSIDevice', \
opterr='during login')
# Allow the devices to settle
time.sleep(5)
except util.CommandException, inst:
raise xs_errors.XenError('ISCSILogin', \
opterr='code is %d' % inst.code)
self.attached = True
