Volume move forced cutover caused interruption of hosted Flexcache volumes

• ONTAP 9
• FlexCache

cluster::*> volume move show -instance

Vserver Name: vserverA
                             Volume Name: volumeA
                    Volume Instance UUID: b3a1c763-2446-11eb-8ae3-d039ea00000
                 
                   Destination Aggregate: aggr1
                        Destination Node: node05
                         Detailed Status: Volume move job cleaning up.
                                   Error: Volume move job stopped by user "admin".
            Estimated Time of Completion: -
               Internal Progress of Move: Volume move job cleaning up.
                     Actual State of Job: CleanupState
                                  Job ID: 120749
                                Job UUID: 08d17cb7-0c07-11ee-80ec-d039e00000
                           Managing Node: node09
                     Percentage Complete: -
                              Move Phase: cleaning_up
                Prior Issues Encountered: 6/18/2023 18:55:20 : Volume move job stopped by user "admin".
6/18/2023 18:55:20 : Move transfer failed: Device busy
6/18/2023 14:43:41 : Preparing source volume for cutover: Timeout: Operation "srcVolMoveObject_lockdown_iterator::create_imp()" took longer than 200 seconds to complete [from mgwd on node "node09" (VSID: -3) to kernel at 127.0.0.1]
6/18/2023 14:38:24 : Preparing source volume for cutover: Volume quiesce failed because there are outstanding file system requests on the volume (Volume can't be quiesced as it did not drain in time.)
6/18/2023 08:25:16 : Preparing source volume for cutover: The volume is involved in a SnapMirror operation and cannot be moved until the SnapMirror operation is complete. Wait for the SnapMirror operation to finish or abort the SnapMirror operation by issuing a 'snapmirror abort -hard true' command.
            Estimated Remaining Duration: -
                  Replication Throughput: 340KB/s
                        Duration of Move: 4 days 12:30
                        Source Aggregate: aggr1
                             Source Node: node09
                      Start Time of Move: Thu Jun 15 22:31:24 2023
                              Move State: warning

• Error generates Vreport:

cluster::*> debug vreport show
volume Differences:

Name             Reason   Attributes
--------         -------  ---------------------------------------------------
vserverA:volumeA      Present in VLDB and WAFL volume busy
                          Node Name: scc67n09b
                          Volume DSID:1072 MSID:2147627075
                          UUID: unknown
                          Aggregate Name: aggr1
                          Aggregate UUID: df225b29-ecd2-4168-989e-0d64e0b0fa80
                          Vserver UUID: 7fdb68ef-0f1d-11eb-b1dd-d039ea1f2ee7
                          AccessType: DP_READ_ONLY
                          StorageType: REGULAR
                          Constituent Role: none

junction Differences:
Name             Reason   Attributes
--------         -------  ---------------------------------------------------
vserverA:volumeA Child volume not present in WAFL
                          Parent Info:
                          VolName: vserverA_rootvol
                          MSID: 2147627028 DSID: 1025 vsID: 13
                          Child: (Not Present in WAFL)
                          VolName: sdg74_ipr_0030RePlAcEDoTzoneonly
                          MSID: 0 DSID: 1072 vsID: 13

• Attempting to clean up the Vreport results in 'object not found'
• EMS shows Nblade.JunctionRootLookup2:error:

Mon Jun 19 23:42:21 -0700 [scc67n09b: nblade2: Nblade.JunctionRootLookup2:error]: Junction root lookup of a volume in Vserver 13 with MSID 2147627075 has failed for reason "SPINNP(264)".

• All hosted Flexcache volumes become inaccessible from clients after aborting forced cutover