def _attach_LUN_bylunid(self, lunid):
if not self.attached:
raise xs_errors.XenError('SRUnavailable')
connected = []
for val in self.adapter:
if not self.pathdict.has_key(val):
continue
rec = self.pathdict[val]
path = os.path.join(rec['path'],"LUN%s" % lunid)
util.SMlog("path: %s" % path)
realpath = os.path.realpath(path)
util.SMlog("realpath: %s" % realpath)
host = self.adapter[val]
if not self.devs.has_key(realpath):
l = [realpath, host, 0, 0, lunid]
scsiutil.scsi_dev_ctrl(l,"add")
if not util.wait_for_path(path, MAX_LUNID_TIMEOUT):
util.SMlog("Unable to detect LUN attached to host on path [%s]" % path)
continue
else:
# Verify that we are not seeing a stale LUN map
try:
real_SCSIid = scsiutil.getSCSIid(realpath)
cur_scsibuspath = glob.glob('/dev/disk/by-scsibus/*-%s:0:0:%s' % (host,lunid))
cur_SCSIid = os.path.basename(cur_scsibuspath[0]).split("-")[0]
assert(cur_SCSIid == real_SCSIid)
except:
scsiutil.rescan([host])
if not os.path.exists('/dev/disk/by-scsibus/%s-%s:0:0:%s' % \
(real_SCSIid,host,lunid)):
util.SMlog("Unable to detect LUN attached to host after bus re-probe")
continue
connected.append(path)
return connected
def _detach_LUN_bylunid(self, lunid, SCSIid):
if not self.attached:
raise xs_errors.XenError("SRUnavailable")
if self.mpath == "true" and len(SCSIid):
self.mpathmodule.reset(SCSIid, True)
util.remove_mpathcount_field(self.session, self.host_ref, self.sr_ref, SCSIid)
for val in self.adapter:
if not self.pathdict.has_key(val):
continue
rec = self.pathdict[val]
path = os.path.join(rec["path"], "LUN%s" % lunid)
realpath = os.path.realpath(path)
if self.devs.has_key(realpath):
util.SMlog("Found key: %s" % realpath)
scsiutil.scsi_dev_ctrl(self.devs[realpath], "remove")
# Wait for device to disappear
if not util.wait_for_nopath(realpath, MAX_LUNID_TIMEOUT):
util.SMlog("Device has not disappeared after %d seconds" % MAX_LUNID_TIMEOUT)
else:
util.SMlog("Device [%s,%s] disappeared" % (realpath, path))
def _detach_LUN_bylunid(self, lunid, SCSIid):
if not self.attached:
raise xs_errors.XenError('SRUnavailable')
if self.mpath == 'true' and len(SCSIid):
self.mpathmodule.reset(SCSIid, True)
util.remove_mpathcount_field(self.session, self.host_ref, self.sr_ref, SCSIid)
for val in self.adapter:
if not self.pathdict.has_key(val):
continue
rec = self.pathdict[val]
path = os.path.join(rec['path'],"LUN%s" % lunid)
realpath = os.path.realpath(path)
if self.devs.has_key(realpath):
util.SMlog("Found key: %s" % realpath)
scsiutil.scsi_dev_ctrl(self.devs[realpath], 'remove')
# Wait for device to disappear
if not util.wait_for_nopath(realpath, MAX_LUNID_TIMEOUT):
util.SMlog("Device has not disappeared after %d seconds" % \
MAX_LUNID_TIMEOUT)
else:
util.SMlog("Device [%s,%s] disappeared" % (realpath,path))
def _attach_LUN_bylunid(self, lunid):
if not self.attached:
raise xs_errors.XenError('SRUnavailable')
connected = []
for val in self.adapter:
if val not in self.pathdict:
continue
rec = self.pathdict[val]
path = os.path.join(rec['path'], "LUN%s" % lunid)
realpath = os.path.realpath(path)
host = self.adapter[val]
l = [realpath, host, 0, 0, lunid]
addDevice = True
if realpath in self.devs:
# if the device is stale remove it before adding again
real_SCSIid = None
try:
real_SCSIid = scsiutil.getSCSIid(realpath)
except:
pass
if real_SCSIid != None:
# make sure this is the same scsiid, if not remove the device
cur_scsibuspath = glob.glob(
'/dev/disk/by-scsibus/*-%s:0:0:%s' % (host, lunid))
cur_SCSIid = os.path.basename(
cur_scsibuspath[0]).split("-")[0]
if cur_SCSIid != real_SCSIid:
# looks stale, remove it
scsiutil.scsi_dev_ctrl(l, "remove")
else:
util.SMlog("Not attaching LUNID %s for adapter %s"\
" since the device exists and the scsi id %s seems"\
" to be valid. " % (lunid, val, real_SCSIid))
addDevice = False
else:
# looks stale, remove it
scsiutil.scsi_dev_ctrl(l, "remove")
if addDevice:
# add the device
scsiutil.scsi_dev_ctrl(l, "add")
if not util.wait_for_path(path, MAX_LUNID_TIMEOUT):
util.SMlog(
"Unable to detect LUN attached to host on path [%s]" %
path)
continue
connected.append(path)
return connected
def _attach_LUN_bylunid(self, lunid):
if not self.attached:
raise xs_errors.XenError("SRUnavailable")
connected = []
for val in self.adapter:
if not self.pathdict.has_key(val):
continue
rec = self.pathdict[val]
path = os.path.join(rec["path"], "LUN%s" % lunid)
realpath = os.path.realpath(path)
host = self.adapter[val]
l = [realpath, host, 0, 0, lunid]
addDevice = True
if self.devs.has_key(realpath):
# if the device is stale remove it before adding again
real_SCSIid = None
try:
real_SCSIid = scsiutil.getSCSIid(realpath)
except:
pass
if real_SCSIid != None:
# make sure this is the same scsiid, if not remove the device
cur_scsibuspath = glob.glob("/dev/disk/by-scsibus/*-%s:0:0:%s" % (host, lunid))
cur_SCSIid = os.path.basename(cur_scsibuspath[0]).split("-")[0]
if cur_SCSIid != real_SCSIid:
# looks stale, remove it
scsiutil.scsi_dev_ctrl(l, "remove")
else:
util.SMlog(
"Not attaching LUNID %s for adapter %s"
" since the device exists and the scsi id %s seems"
" to be valid. " % (lunid, val, real_SCSIid)
)
addDevice = False
else:
# looks stale, remove it
scsiutil.scsi_dev_ctrl(l, "remove")
if addDevice:
# add the device
scsiutil.scsi_dev_ctrl(l, "add")
if not util.wait_for_path(path, MAX_LUNID_TIMEOUT):
util.SMlog("Unable to detect LUN attached to host on path [%s]" % path)
continue
connected.append(path)
return connected
