cluster::> system node revert-to -version 9.7 -check-only
Error: command failed: The revert check phase failed. The following issues must be resolved before revert can be completed. Bring the data LIFs down on running vservers. Command to list the running vservers: vserver show -admin-state running Command to list the data LIFs that are up: network interface show -role data -status-admin up Command to bring all data LIFs down: network interface modify {-role data} -status-admin down
Disable snapshot policies.
    Command to list snapshot policies: "snapshot policy show".
    Command to disable snapshot policies: "snapshot policy modify -vserver
   * -enabled false"

   Break off the initialized online data-protection (DP) volumes and delete
   Uninitialized online data-protection (DP) volumes present on the local
   node.
    Command to list all online data-protection volumes on the local node:
   volume show -type DP -state online -node <local-node-name>
    Before breaking off the initialized online data-protection volumes,
   quiesce and abort transfers on associated SnapMirror relationships and
   wait for the Relationship Status to be Quiesced.
    Command to quiesce a SnapMirror relationship: snapmirror quiesce
    Command to abort transfers on a SnapMirror relationship: snapmirror
   abort
    Command to see if the Relationship Status of a SnapMirror relationship
   is Quiesced: snapmirror show
    Command to break off a data-protection volume: snapmirror break
    Command to break off a data-protection volume which is the destination
   of a SnapMirror relationship with a policy of type "vault": snapmirror
   break -delete-snapshots
    Uninitialized data-protection volumes are reported by the "snapmirror
   break" command when applied on a DP volume.
    Command to delete volume: volume delete

   Delete current version snapshots in advanced privilege level.
    Command to list snapshots: "snapshot show -fs-version 9.9.1"
    Command to delete snapshots: "snapshot prepare-for-revert -node
   <nodename>"

   Delete all user-created policies of the type active-strict-sync-mirror
   and active-sync-mirror.
   The command to see all active-strict-sync-mirror and active-sync-mirror
   type policies is:
    snapmirror policy show -type
   active-strict-sync-mirror,active-sync-mirror
   The command to delete a policy is :
    snapmirror policy delete -vserver <SVM-name> -policy <policy-name>