openstack/cinder
Code Issues Proposed changes

Use IP in Kaminario locks and add/delete loggers

Browse Source 
If some K2 arrays are configured with same 'volume_backend_name'
in cinder.conf, then 'self.k2_lock_name' will be same for attaching and
detaching volumes for these arrays and it will block simultaneous attach
and detach volumes for these K2 arrays.

Use of K2 management IP in place of 'volume_backend_name' will keep
'self.k2_lock_name' different for attaching and detaching volumes and allow
simultaneous attach and detach volumes for these K2 arrays.

Also, Adding/Deleting loggers according to below thumb rules:
1. startup/shutdown functions should use the logging decorator
2. each function that creates objects should use the logging decorator
3. helper functions that do not create objects should NOT use the logging decorator
4. API functions should use the logging decorator

Change-Id: I1b70bee41f6c42585d0df40a4ae59c33f038b58c
Closes-Bug: #1623328
Co-Authored-By: Ido Benda<Ido.Benda@kaminario.com>
This commit is contained in:
Nikesh Mahalka 2016-09-14 05:37:12 -04:00
parent 2bc1cf9031
commit a04ef2278a
3 changed files with 9 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
cinder/volume/drivers/kaminario/kaminario_common.py
View File

@ -87,7 +87,6 @@ if krest:
retries=MAX_K2_RETRY)
def _request(self, method, *args, **kwargs):
try:
LOG.debug("running through the _request wrapper...")
self.krestlock.acquire()
return super(KrestWrap, self)._request(method,
*args, **kwargs)
@ -142,9 +141,10 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
self.configuration.append_config_values(kaminario2_opts)
self.replica = None
self._protocol = None
k2_lock_sfx = self.configuration.safe_get('volume_backend_name') or ''
k2_lock_sfx = self.configuration.safe_get('san_ip')
self.k2_lock_name = "%s-%s" % (K2_LOCK_PREFIX, k2_lock_sfx)
@kaminario_logger
def check_for_setup_error(self):
if krest is None:
msg = _("Unable to import 'krest' python module.")
@ -177,7 +177,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
LOG.error(msg)
raise exception.KaminarioCinderDriverException(reason=msg)
@kaminario_logger
def _check_ops(self):
"""Ensure that the options we care about are set."""
required_ops = ['san_ip', 'san_login', 'san_password']
@ -349,6 +348,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
raise exception.KaminarioCinderDriverException(
reason=six.text_type(ex.message))
@kaminario_logger
def _delete_by_ref(self, device, url, name, msg):
rs = device.search(url, name=name)
for result in rs.hits:
@ -522,6 +522,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
back_end_ip = self.replica.backend_id
return back_end_ip, volume_updates
@kaminario_logger
def _create_volume_replica_user_snap(self, k2, sess):
snap = k2.new("snapshots")
snap.is_application_consistent = "False"
@ -743,7 +744,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
for s in rsnaps:
s.delete()
@kaminario_logger
def _check_for_status(self, obj, status):
while obj.state != status:
obj.refresh()
@ -819,7 +819,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
raise exception.KaminarioCinderDriverException(
reason=six.text_type(ex.message))
@kaminario_logger
def update_volume_stats(self):
conf = self.configuration
LOG.debug("Searching system capacity in K2.")
@ -845,7 +844,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
'replication_enabled': True,
'kaminario:replication': True}
@kaminario_logger
def get_initiator_host_name(self, connector):
"""Return the initiator host name.
@ -855,32 +853,26 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
"""
return re.sub('[^0-9a-zA-Z-_]', '_', connector.get('host', ''))[:32]
@kaminario_logger
def get_volume_group_name(self, vid):
"""Return the volume group name."""
return "cvg-{0}".format(vid)
@kaminario_logger
def get_volume_name(self, vid):
"""Return the volume name."""
return "cv-{0}".format(vid)
@kaminario_logger
def get_session_name(self, vid):
"""Return the volume name."""
return "ssn-{0}".format(vid)
@kaminario_logger
def get_snap_name(self, sid):
"""Return the snapshot name."""
return "cs-{0}".format(sid)
@kaminario_logger
def get_view_name(self, vid):
"""Return the view name."""
return "cview-{0}".format(vid)
@kaminario_logger
def get_rep_name(self, name):
"""Return the corresponding replication names."""
return "r{0}".format(name)
@ -893,7 +885,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
host = host_rs.hits[0]
host.delete()
@kaminario_logger
def get_policy(self):
"""Return the retention policy."""
try:
@ -905,7 +896,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
raise exception.KaminarioCinderDriverException(
reason=six.text_type(ex.message))
@kaminario_logger
def _get_volume_object(self, volume):
vol_name = self.get_volume_name(volume.id)
if volume.replication_status == K2_REP_FAILED_OVER:
@ -918,7 +908,6 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
raise exception.KaminarioCinderDriverException(reason=msg)
return vol_rs.hits[0]
@kaminario_logger
def _get_lun_number(self, vol, host):
volsnap = None
LOG.debug("Searching volsnaps in K2.")
@ -964,6 +953,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
else:
LOG.warning(_LW("Host: %s not found on K2."), host_name)
@kaminario_logger
def k2_initialize_connection(self, volume, connector):
# Get volume object.
if type(volume).__name__ != 'RestObject':
@ -1029,6 +1019,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
return True
return False
@kaminario_logger
def manage_existing(self, volume, existing_ref):
vol_name = existing_ref['source-name']
new_name = self.get_volume_name(volume.id)
@ -1068,6 +1059,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
existing_ref=existing_ref,
reason=six.text_type(ex.message))
@kaminario_logger
def manage_existing_get_size(self, volume, existing_ref):
vol_name = existing_ref['source-name']
v_rs = self.client.search("volumes", name=vol_name)
@ -1080,6 +1072,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
existing_ref=existing_ref,
reason=_('Unable to get size of manage volume.'))
@kaminario_logger
def after_volume_copy(self, ctxt, volume, new_volume, remote=None):
self.delete_volume(volume)
vg_name_old = self.get_volume_group_name(volume.id)
@ -1093,6 +1086,7 @@ class KaminarioCinderDriver(cinder.volume.driver.ISCSIDriver):
vol_new.name = vol_name_old
vol_new.save()
@kaminario_logger
def retype(self, ctxt, volume, new_type, diff, host):
old_type = volume.get('volume_type')
vg_name = self.get_volume_group_name(volume.id)

2
cinder/volume/drivers/kaminario/kaminario_fc.py
View File

@ -112,7 +112,6 @@ class KaminarioFCDriver(common.KaminarioCinderDriver):
self.client = temp_client
return properties
@kaminario_logger
def get_target_info(self, volume):
LOG.debug("Searching target wwpns in K2.")
fc_ports_rs = self.client.search("system/fc_ports")
@ -168,7 +167,6 @@ class KaminarioFCDriver(common.KaminarioCinderDriver):
reason=six.text_type(ex.message))
return host, host_rs, host_name
@kaminario_logger
def _build_initiator_target_map(self, connector, all_target_wwns):
"""Build the target_wwns and the initiator target map."""
target_wwns = []

1
cinder/volume/drivers/kaminario/kaminario_iscsi.py
View File

@ -91,7 +91,6 @@ class KaminarioISCSIDriver(common.KaminarioCinderDriver):
if temp_client:
self.client = temp_client
@kaminario_logger
def get_target_info(self, volume):
LOG.debug("Searching first iscsi port ip without wan in K2.")
iscsi_ip_rs = self.client.search("system/net_ips", wan_port="")