Cinder

[IBM GPFS] NFS driver throws an error while volume creation in copy-on-write mode

Bug #1947123 reported by Digvijay Ukirde on 2021-10-14

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Cinder	Fix Released	Medium	Digvijay Ukirde

Bug Description

IBM Spectrum Scale Cinder driver (gpfs) throws an error when gpfs_images_share_mode is set to copy_on_write in GPFSNFS configuration.

2021-09-21 07:45:12.609 4373 INFO cinder.volume.flows.manager.create_volume [req-4c87e2b5-e500-4e47-86fc-60961ec59c5f afea48f8d5474f66a6db9fd3d4db1faf 5311c56042934c6ea797c4060b11abad - default default] Volume 5570c5d3-e446-4099-81bc-7aeaf8ff1579: being created as image with specification: {'status': u'creating', 'image_location': (None, None), 'volume_size': 1, 'volume_name': u'volume-5570c5d3-e446-4099-81bc-7aeaf8ff1579', 'image_id': u'731c00d1-5295-4452-87d0-7a0b12089b88', 'image_service': <cinder.image.glance.GlanceImageService object at 0x7f1f29a5fa10>, 'image_meta': {u'status': u'active', u'file': u'/v2/images/731c00d1-5295-4452-87d0-7a0b12089b88/file', u'id': u'731c00d1-5295-4452-87d0-7a0b12089b88', u'name': u'cirros', u'tags': [], u'container_format': u'bare', u'created_at': datetime.datetime(2021, 9, 20, 10, 50, 55, tzinfo=<iso8601.Utc>), u'disk_format': u'qcow2', u'updated_at': datetime.datetime(2021, 9, 20, 10, 50, 56, tzinfo=<iso8601.Utc>), u'visibility': u'public', u'os_hash_algo': u'sha512', u'owner': u'5311c56042934c6ea797c4060b11abad', u'protected': False, u'os_hash_value': u'6513f21e44aa3da349f248188a44bc304a3653a04122d8fb4535423c8e1d14cd6a153f735bb0982e2161b5b5186106570c17a9e58b64dd39390617cd5a350f78', u'min_ram': 0, u'checksum': u'443b7623e27ecf03dc9e01ee93f67afe', u'min_disk': 0, u'os_hidden': False, u'virtual_size': None, 'properties': {}, u'size': 12716032}}
2021-09-21 07:45:12.765 4373 WARNING cinder.volume.manager [req-4c87e2b5-e500-4e47-86fc-60961ec59c5f afea48f8d5474f66a6db9fd3d4db1faf 5311c56042934c6ea797c4060b11abad - default default] Task 'cinder.volume.flows.manager.create_volume.CreateVolumeFromSpecTask;volume:create' (7275b8ff-7d2e-407e-879e-e95ae645b94e) transitioned into state 'FAILURE' from state 'RUNNING'
5 predecessors (most recent first):
  Atom 'cinder.volume.flows.manager.create_volume.NotifyVolumeActionTask;volume:create, create.start' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'volume': Volume(_name_id=None,admin_metadata={},attach_status='detached',availability_zone='nova',bootable=False,cluster=<?>,cluster_name=None,consistencygroup=<?>,consistencygroup_id=None,created_at=2021-09-21T11:45:11Z,deleted=False,deleted_at=None,display_description=None,display_name='qcow-vol-1',ec2_id=None,encryption_key_id=None,glance_metadata=<?>,group=<?>,group_id=None,host='openstack.novalocal@GPFSNFS#GPFSNFS',id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,launched_at=None,metadata={},migration_status=None,multiattach=False,previous_status=None,project_id='5311c56042934c6ea797c4060b11abad',provider_auth=None,provider_geometry=None,provider_id=None,provider_location=None,replication_driver_data=None,replication_extended_status=None,replication_status=None,scheduled_at=2021-09-21T11:45:12Z,service_uuid=None,shared_targets=True,size=1,snapshot_id=None,snapshots=<?>,source_volid=None,status='creating',terminated_at=None,updated_at=2021-09-21T11:45:12Z,user_id='afea48f8d5474f66a6db9fd3d4db1faf',volume_attachment=<?>,volume_type=<?>,volume_type_id=None), 'context': <cinder.context.RequestContext object at 0x7f1f29c52810>}, 'provides': None}
  |__Atom 'cinder.volume.flows.manager.create_volume.ExtractVolumeSpecTask;volume:create' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'volume': Volume(_name_id=None,admin_metadata={},attach_status='detached',availability_zone='nova',bootable=False,cluster=<?>,cluster_name=None,consistencygroup=<?>,consistencygroup_id=None,created_at=2021-09-21T11:45:11Z,deleted=False,deleted_at=None,display_description=None,display_name='qcow-vol-1',ec2_id=None,encryption_key_id=None,glance_metadata=<?>,group=<?>,group_id=None,host='openstack.novalocal@GPFSNFS#GPFSNFS',id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,launched_at=None,metadata={},migration_status=None,multiattach=False,previous_status=None,project_id='5311c56042934c6ea797c4060b11abad',provider_auth=None,provider_geometry=None,provider_id=None,provider_location=None,replication_driver_data=None,replication_extended_status=None,replication_status=None,scheduled_at=2021-09-21T11:45:12Z,service_uuid=None,shared_targets=True,size=1,snapshot_id=None,snapshots=<?>,source_volid=None,status='creating',terminated_at=None,updated_at=2021-09-21T11:45:12Z,user_id='afea48f8d5474f66a6db9fd3d4db1faf',volume_attachment=<?>,volume_type=<?>,volume_type_id=None), 'request_spec': RequestSpec(CG_backend=<?>,availability_zones=['nova'],backup_id=None,cgsnapshot_id=None,consistencygroup_id=None,group_backend=<?>,group_id=None,image_id=731c00d1-5295-4452-87d0-7a0b12089b88,operation='create_volume',resource_backend=<?>,snapshot_id=None,source_replicaid=<?>,source_volid=None,volume=Volume(5570c5d3-e446-4099-81bc-7aeaf8ff1579),volume_id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,volume_properties=VolumeProperties,volume_type=None), 'context': <cinder.context.RequestContext object at 0x7f1f29c52810>}, 'provides': {'status': u'creating', 'image_location': (None, None), 'image_id': u'731c00d1-5295-4452-87d0-7a0b12089b88', 'volume_id': u'5570c5d3-e446-4099-81bc-7aeaf8ff1579', 'volume_size': 1, 'image_service': <cinder.image.glance.GlanceImageService object at 0x7f1f29a5fa10>, 'image_meta': {u'status': u'active', u'file': u'/v2/images/731c00d1-5295-4452-87d0-7a0b12089b88/file', u'id': u'731c00d1-5295-4452-87d0-7a0b12089b88', u'name': u'cirros', u'tags': [], u'container_format': u'bare', u'created_at': datetime.datetime(2021, 9, 20, 10, 50, 55, tzinfo=<iso8601.Utc>), u'disk_format': u'qcow2', u'updated_at': datetime.datetime(2021, 9, 20, 10, 50, 56, tzinfo=<iso8601.Utc>), u'visibility': u'public', u'os_hash_algo': u'sha512', u'owner': u'5311c56042934c6ea797c4060b11abad', u'protected': False, u'os_hash_value': u'6513f21e44aa3da349f248188a44bc304a3653a04122d8fb4535423c8e1d14cd6a153f735bb0982e2161b5b5186106570c17a9e58b64dd39390617cd5a350f78', u'min_ram': 0, u'checksum': u'443b7623e27ecf03dc9e01ee93f67afe', u'min_disk': 0, u'os_hidden': False, u'virtual_size': None, 'properties': {}, u'size': 12716032}, 'volume_name': u'volume-5570c5d3-e446-4099-81bc-7aeaf8ff1579', 'type': 'image'}}
     |__Atom 'cinder.volume.flows.manager.create_volume.OnFailureRescheduleTask;volume:create' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'volume': Volume(_name_id=None,admin_metadata={},attach_status='detached',availability_zone='nova',bootable=False,cluster=<?>,cluster_name=None,consistencygroup=<?>,consistencygroup_id=None,created_at=2021-09-21T11:45:11Z,deleted=False,deleted_at=None,display_description=None,display_name='qcow-vol-1',ec2_id=None,encryption_key_id=None,glance_metadata=<?>,group=<?>,group_id=None,host='openstack.novalocal@GPFSNFS#GPFSNFS',id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,launched_at=None,metadata={},migration_status=None,multiattach=False,previous_status=None,project_id='5311c56042934c6ea797c4060b11abad',provider_auth=None,provider_geometry=None,provider_id=None,provider_location=None,replication_driver_data=None,replication_extended_status=None,replication_status=None,scheduled_at=2021-09-21T11:45:12Z,service_uuid=None,shared_targets=True,size=1,snapshot_id=None,snapshots=<?>,source_volid=None,status='creating',terminated_at=None,updated_at=2021-09-21T11:45:12Z,user_id='afea48f8d5474f66a6db9fd3d4db1faf',volume_attachment=<?>,volume_type=<?>,volume_type_id=None), 'filter_properties': {u'config_options': {}, u'request_spec': {u'backup_id': None, u'volume_id': u'5570c5d3-e446-4099-81bc-7aeaf8ff1579', u'volume_properties': {u'status': u'creating', u'volume_type_id': None, u'project_id': u'5311c56042934c6ea797c4060b11abad', u'user_id': u'afea48f8d5474f66a6db9fd3d4db1faf', u'availability_zone': u'nova', u'reservations': [u'bcd1d297-bd51-4917-88b2-d29217a7c050', u'7c5eee82-ec9f-44a9-9f1f-b260a78585bc'], u'multiattach': False, u'attach_status': u'detached', u'source_volid': None, u'cgsnapshot_id': None, u'metadata': {}, u'qos_specs': None, u'encryption_key_id': None, u'display_description': None, u'snapshot_id': None, u'display_name': u'qcow-vol-1', u'group_id': None, u'consistencygroup_id': None, u'size': 1}, u'source_volid': None, u'cgsnapshot_id': None, u'volume': {u'migration_status': None, u'provider_id': None, u'availability_zone': u'nova', u'terminated_at': None, u'updated_at': None, u'provider_geometry': None, u'replication_extended_status': None, u'replication_status': None, u'snapshot_id': None, u'ec2_id': None, u'deleted_at': None, u'id': u'5570c5d3-e446-4099-81bc-7aeaf8ff1579', u'size': 1, u'display_name': u'qcow-vol-1', u'display_description': None, u'cluster_name': None, u'name_id': u'5570c5d3-e446-4099-81bc-7aeaf8ff1579', u'volume_admin_metadata': [], u'project_id': u'5311c56042934c6ea797c4060b11abad', u'launched_at': None, u'scheduled_at': None, u'status': u'creating', u'volume_type_id': None, u'multiattach': False, u'deleted': False, u'service_uuid': None, u'provider_location': None, u'volume_glance_metadata': [], u'host': None, u'consistencygroup_id': None, u'source_volid': None, u'provider_auth': None, u'previous_status': None, u'group_id': None, u'name': u'volume-5570c5d3-e446-4099-81bc-7aeaf8ff1579', u'user_id': u'afea48f8d5474f66a6db9fd3d4db1faf', u'bootable': False, u'shared_targets': True, u'attach_status': u'detached', u'volume_metadata': [], u'_name_id': None, u'encryption_key_id': None, u'replication_driver_data': None, u'metadata': {}, u'created_at': u'2021-09-21T11:45:11.000000'}, u'image_id': u'731c00d1-5295-4452-87d0-7a0b12089b88', u'availability_zones': [u'nova'], u'consistencygroup_id': None, u'volume_type': None, u'snapshot_id': None, u'operation': u'create_volume', u'resource_properties': {u'status': u'creating', u'volume_type_id': None, u'project_id': u'5311c56042934c6ea797c4060b11abad', u'user_id': u'afea48f8d5474f66a6db9fd3d4db1faf', u'availability_zone': u'nova', u'reservations': [u'bcd1d297-bd51-4917-88b2-d29217a7c050', u'7c5eee82-ec9f-44a9-9f1f-b260a78585bc'], u'multiattach': False, u'attach_status': u'detached', u'source_volid': None, u'cgsnapshot_id': None, u'metadata': {}, u'qos_specs': None, u'encryption_key_id': None, u'display_description': None, u'snapshot_id': None, u'display_name': u'qcow-vol-1', u'group_id': None, u'consistencygroup_id': None, u'size': 1}, u'group_id': None}, u'user_id': u'afea48f8d5474f66a6db9fd3d4db1faf', u'availability_zone': u'nova', u'volume_type': None, u'qos_specs': None, u'retry': {u'num_attempts': 1, u'backends': [u'openstack.novalocal@GPFSNFS#GPFSNFS'], u'hosts': [u'openstack.novalocal@GPFSNFS#GPFSNFS']}, u'metadata': {}, u'resource_type': {}, u'size': 1}, 'context': <cinder.context.RequestContext object at 0x7f1f29c52810>, 'request_spec': RequestSpec(CG_backend=<?>,availability_zones=['nova'],backup_id=None,cgsnapshot_id=None,consistencygroup_id=None,group_backend=<?>,group_id=None,image_id=731c00d1-5295-4452-87d0-7a0b12089b88,operation='create_volume',resource_backend=<?>,snapshot_id=None,source_replicaid=<?>,source_volid=None,volume=Volume(5570c5d3-e446-4099-81bc-7aeaf8ff1579),volume_id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,volume_properties=VolumeProperties,volume_type=None)}, 'provides': None}
        |__Atom 'cinder.volume.flows.manager.create_volume.ExtractVolumeRefTask;volume:create' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'volume': Volume(_name_id=None,admin_metadata={},attach_status='detached',availability_zone='nova',bootable=False,cluster=<?>,cluster_name=None,consistencygroup=<?>,consistencygroup_id=None,created_at=2021-09-21T11:45:11Z,deleted=False,deleted_at=None,display_description=None,display_name='qcow-vol-1',ec2_id=None,encryption_key_id=None,glance_metadata=<?>,group=<?>,group_id=None,host='openstack.novalocal@GPFSNFS#GPFSNFS',id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,launched_at=None,metadata={},migration_status=None,multiattach=False,previous_status=None,project_id='5311c56042934c6ea797c4060b11abad',provider_auth=None,provider_geometry=None,provider_id=None,provider_location=None,replication_driver_data=None,replication_extended_status=None,replication_status=None,scheduled_at=2021-09-21T11:45:12Z,service_uuid=None,shared_targets=True,size=1,snapshot_id=None,snapshots=<?>,source_volid=None,status='creating',terminated_at=None,updated_at=2021-09-21T11:45:12Z,user_id='afea48f8d5474f66a6db9fd3d4db1faf',volume_attachment=<?>,volume_type=<?>,volume_type_id=None), 'context': <cinder.context.RequestContext object at 0x7f1f29c52810>}, 'provides': Volume(_name_id=None,admin_metadata={},attach_status='detached',availability_zone='nova',bootable=False,cluster=<?>,cluster_name=None,consistencygroup=<?>,consistencygroup_id=None,created_at=2021-09-21T11:45:11Z,deleted=False,deleted_at=None,display_description=None,display_name='qcow-vol-1',ec2_id=None,encryption_key_id=None,glance_metadata=<?>,group=<?>,group_id=None,host='openstack.novalocal@GPFSNFS#GPFSNFS',id=5570c5d3-e446-4099-81bc-7aeaf8ff1579,launched_at=None,metadata={},migration_status=None,multiattach=False,previous_status=None,project_id='5311c56042934c6ea797c4060b11abad',provider_auth=None,provider_geometry=None,provider_id=None,provider_location=None,replication_driver_data=None,replication_extended_status=None,replication_status=None,scheduled_at=2021-09-21T11:45:12Z,service_uuid=None,shared_targets=True,size=1,snapshot_id=None,snapshots=<?>,source_volid=None,status='creating',terminated_at=None,updated_at=2021-09-21T11:45:12Z,user_id='afea48f8d5474f66a6db9fd3d4db1faf',volume_attachment=<?>,volume_type=<?>,volume_type_id=None)}
           |__Flow 'volume_create_manager': TypeError: md5() argument 1 must be string or buffer, not None
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager Traceback (most recent call last):
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager result = task.execute(**arguments)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/flows/manager/create_volume.py", line 980, in execute
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager **volume_spec)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/utils.py", line 818, in _wrapper
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager return r.call(f, *args, **kwargs)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/retrying.py", line 223, in call
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager return attempt.get(self._wrap_exception)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/retrying.py", line 261, in get
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager six.reraise(self.value[0], self.value[1], self.value[2])
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/retrying.py", line 217, in call
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/flows/manager/create_volume.py", line 848, in _create_from_image
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager image_service)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/ibm/gpfs.py", line 902, in clone_image
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager return self._clone_image(volume, image_location, image_meta['id'])
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/ibm/gpfs.py", line 937, in _clone_image
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager vol_path = self.local_path(volume)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/ibm/gpfs.py", line 1629, in local_path
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager base_local_path = self._get_mount_point_for_share(remotefs_share)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/nfs.py", line 340, in _get_mount_point_for_share
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager return self._remotefsclient.get_mount_point(nfs_share)
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/os_brick/remotefs/remotefs.py", line 81, in get_mount_point
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager self._get_hash_str(device_name))
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager File "/usr/lib/python2.7/site-packages/os_brick/remotefs/remotefs.py", line 73, in _get_hash_str
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager return hashlib.md5(base_str).hexdigest()
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager TypeError: md5() argument 1 must be string or buffer, not None
2021-09-21 07:45:12.765 4373 ERROR cinder.volume.manager

Tags:

Digvijay Ukirde (digvijay-ukirde) on 2021-10-14

summary:	- GPFS NFS driver throws an error while copy-on-write is enabled + GPFS NFS driver throws an error while volume creation in copy-on-write + mode
Changed in cinder:
assignee:	nobody → Digvijay Ukirde (digvijay-ukirde)

OpenStack Infra (hudson-openstack) on 2021-10-14

Changed in cinder:
status:	New → In Progress

Sofia Enriquez (lsofia-enriquez) on 2021-10-26

Changed in cinder:
importance:	Undecided → Medium
tags:	added: gpfs ibm volume
summary:	- GPFS NFS driver throws an error while volume creation in copy-on-write - mode + [IBM GPFS] NFS driver throws an error while volume creation in copy-on- + write mode

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2021-11-08: Fix merged to cinder (master)

Reviewed: https://review.opendev.org/c/openstack/cinder/+/813984
Committed: https://opendev.org/openstack/cinder/commit/dcc191646985fa0be76ee763935ef37a8456d1e6
Submitter: "Zuul (22348)"
Branch: master

commit dcc191646985fa0be76ee763935ef37a8456d1e6
Author: digvijay2016 <email address hidden>
Date: Thu Oct 14 07:24:18 2021 -0400

Fixed copy-on-write mode in GPFS NFS driver

    IBM Spectrum Scale cinder driver (GPFS) support copy-on-write feature
    in all the configuration. Resolving the bug mentioned below will
    enable mmclone feature of the IBM Spectrum Scale filesystem to provide
    better performance while configured in GPFS NFS mode.

    Closes-Bug: #1947134
    Closes-Bug: #1947123
    Change-Id: I3e77c890c7abca85dab92500eae989b4dff9824d

Changed in cinder:
status:	In Progress → Fix Released

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2021-11-10: Fix proposed to cinder (stable/xena)

Fix proposed to branch: stable/xena
Review: https://review.opendev.org/c/openstack/cinder/+/817263

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2021-11-12: Fix merged to cinder (stable/xena)

Reviewed: https://review.opendev.org/c/openstack/cinder/+/817263
Committed: https://opendev.org/openstack/cinder/commit/6c64d92a7801d12bd44cc3b19fd10e4193b1bad8
Submitter: "Zuul (22348)"
Branch: stable/xena

commit 6c64d92a7801d12bd44cc3b19fd10e4193b1bad8
Author: digvijay2016 <email address hidden>
Date: Thu Oct 14 07:24:18 2021 -0400

Fixed copy-on-write mode in GPFS NFS driver

    Closes-Bug: #1947134
    Closes-Bug: #1947123
    Change-Id: I3e77c890c7abca85dab92500eae989b4dff9824d
    (cherry picked from commit dcc191646985fa0be76ee763935ef37a8456d1e6)

tags:

added: in-stable-xena

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2021-11-13: Fix proposed to cinder (stable/wallaby)

Fix proposed to branch: stable/wallaby
Review: https://review.opendev.org/c/openstack/cinder/+/817833

Revision history for this message

OpenStack Infra (hudson-openstack) wrote on 2022-02-02: Fix merged to cinder (stable/wallaby)

Reviewed: https://review.opendev.org/c/openstack/cinder/+/817833
Committed: https://opendev.org/openstack/cinder/commit/0e3f03529a4fa45674397cea09e29876a660976c
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 0e3f03529a4fa45674397cea09e29876a660976c
Author: digvijay2016 <email address hidden>
Date: Thu Oct 14 07:24:18 2021 -0400

Fixed copy-on-write mode in GPFS NFS driver

    Closes-Bug: #1947134
    Closes-Bug: #1947123
    Change-Id: I3e77c890c7abca85dab92500eae989b4dff9824d
    (cherry picked from commit dcc191646985fa0be76ee763935ef37a8456d1e6)
    (cherry picked from commit 6c64d92a7801d12bd44cc3b19fd10e4193b1bad8)