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 probe_luns(target, port, iqn):
portal = get_portal(target, port, iqn)
iscsilib.login(portal, iqn, "", "")
try:
luns = iscsilib.get_luns(iqn, portal)
return [get_probe_possibility(os.path.join("/dev/iscsi/",iqn,portal,"LUN%s" % lun),lun) for lun in luns]
finally:
iscsilib.logout(portal, iqn)
def create(self, sr_uuid, size):
try:
# attach the device
util.SMlog("Trying to attach iscsi disk")
self.iscsi.attach(sr_uuid)
if not self.iscsi.attached:
raise xs_errors.XenError('SRNotAttached')
util.SMlog("Attached iscsi disk at %s \n" % self.iscsi.path)
try:
# generate new UUIDs for VG and LVs
old_vg_name = self._getVgName(self.dconf['device'])
lvm_config_dict = self._getLvmInfo(old_vg_name)
lvUuidMap = {} # Maps old lv uuids to new uuids
for lv_name in lvm_config_dict[old_vg_name]['logical_volumes']:
if lv_name == MDVOLUME_NAME:
continue
oldUuid = lv_name[4:] # remove the VHD-
lvUuidMap[oldUuid] = util.gen_uuid()
new_vg_name = VG_PREFIX + sr_uuid
self._resignLvm(sr_uuid, old_vg_name, lvUuidMap,
lvm_config_dict)
# causes creation of nodes and activates the lvm volumes
LVHDSR.LVHDSR.load(self, sr_uuid)
new_vdi_info = self._resignSrMetadata(new_vg_name, self.uuid,
lvUuidMap)
self._resignVdis(new_vg_name, lvUuidMap)
self._deleteAllSnapshots(new_vdi_info)
# Detach LVM
self.lvmCache.deactivateNoRefcount(MDVOLUME_NAME)
for newUuid in lvUuidMap.values():
new_lv_name = self.LV_VHD_PREFIX + newUuid
self.lvmCache.deactivateNoRefcount(new_lv_name)
except:
util.logException("RESIGN_CREATE")
raise
finally:
iscsilib.logout(self.iscsi.target, self.iscsi.targetIQN, all=True)
raise xs_errors.XenError(
"The SR has been successfully resigned. Use the lvmoiscsi type to attach it"
)
def probe_luns(target, port, iqn):
portal = get_portal(target, port, iqn)
iscsilib.login(portal, iqn, "", "")
try:
luns = iscsilib.get_luns(iqn, portal)
return [
get_probe_possibility(
os.path.join("/dev/iscsi/", iqn, portal, "LUN%s" % lun), lun)
for lun in luns
]
finally:
iscsilib.logout(portal, iqn)
def create(self, sr_uuid, size):
try:
# attach the device
util.SMlog("Trying to attach iscsi disk")
self.iscsi.attach(sr_uuid)
if not self.iscsi.attached:
raise xs_errors.XenError('SRNotAttached')
util.SMlog("Attached iscsi disk at %s \n" % self.iscsi.path)
try:
# generate new UUIDs for VG and LVs
old_vg_name = self._getVgName(self.dconf['device'])
lvm_config_dict = self._getLvmInfo(old_vg_name)
lvUuidMap = {} # Maps old lv uuids to new uuids
for lv_name in lvm_config_dict[old_vg_name]['logical_volumes']:
if lv_name == MDVOLUME_NAME:
continue
oldUuid = lv_name[4:] # remove the VHD-
lvUuidMap[oldUuid] = util.gen_uuid()
new_vg_name = VG_PREFIX + sr_uuid
self._resignLvm(sr_uuid, old_vg_name, lvUuidMap, lvm_config_dict)
# causes creation of nodes and activates the lvm volumes
LVHDSR.LVHDSR.load(self, sr_uuid)
new_vdi_info = self._resignSrMetadata(new_vg_name, self.uuid, lvUuidMap)
self._resignVdis(new_vg_name, lvUuidMap)
self._deleteAllSnapshots(new_vdi_info)
# Detach LVM
self.lvmCache.deactivateNoRefcount(MDVOLUME_NAME)
for newUuid in lvUuidMap.values():
new_lv_name = self.LV_VHD_PREFIX + newUuid
self.lvmCache.deactivateNoRefcount(new_lv_name)
except:
util.logException("RESIGN_CREATE")
raise
finally:
iscsilib.logout(self.iscsi.target, self.iscsi.targetIQN, all=True)
raise xs_errors.XenError("The SR has been successfully resigned. Use the lvmoiscsi type to attach it")
def attach(target, port, iqn, scsiid):
portal = get_portal(target, port, iqn)
iscsilib.login(portal, iqn, "", "")
try:
luns = iscsilib.get_luns(iqn, portal)
infos = [get_probe_possibility(os.path.join("/dev/iscsi/",iqn,portal,"LUN%s" % lun),lun) for lun in luns]
for info in infos:
if info['info']['SCSIid'] == scsiid:
return os.path.join("/dev/iscsi",iqn,portal,"LUN%s" % info['info']['LUNid'])
raise "Unknown SCSIid"
except:
iscsilib.logout(portal, iqn)
raise
def attach(target, port, iqn, scsiid):
portal = get_portal(target, port, iqn)
iscsilib.login(portal, iqn, "", "")
try:
luns = iscsilib.get_luns(iqn, portal)
infos = [
get_probe_possibility(
os.path.join("/dev/iscsi/", iqn, portal, "LUN%s" % lun), lun)
for lun in luns
]
for info in infos:
if info['info']['SCSIid'] == scsiid:
return os.path.join("/dev/iscsi", iqn, portal,
"LUN%s" % info['info']['LUNid'])
raise "Unknown SCSIid"
except:
iscsilib.logout(portal, iqn)
raise
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 detach(target, port, iqn):
portal = get_portal(target, port, iqn)
iscsilib.logout(portal, iqn)
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 detach(self, sr_uuid, vdi_uuid):
# Does iscsi logout
log("Calling VDI DETACH")
portal = "%s:%s" % (self.target, self.port)
iscsilib.logout(portal, self.iqn)
self.attached = False
def detach(target, port, iqn):
portal = get_portal(target, port, iqn)
iscsilib.logout(portal,iqn)
