CONTAP-272050: ANDU Validation fails with error:There are one or more FlexCache volumes with writeback option enabled

Issue

-ANDU Validation fails with error:
Cluster1::> cluster image show-update-progress
Estimated Duration: 00:10:00
Elapsed Duration : 00:00:57
Overall Status : Pre-update checks are failed on cluster Cluster1.
Pre-update checks are completed on cluster Cluster2.
Cluster Name: Cluster1 Status: completed
Pre-update Check Status Error-Action
-------------------- --------------- -------------------------------------
Origin With Error Error: There are one or more
FlexCache Writeback FlexCache volumes with writeback
Check option enabled pointing to the
origin in this cluster.
Action: Use the "flexcache origin
show-caches" to list all the
flexcaches with writeback option
enabled pointing to the origin in
this cluster. Disable the writeback
option on all these caches using
"flexcache config modify
-is-writeback-enabled false -vserver
<cache_vserver> * " command in the
cache cluster, wait for a few
minutes and try again.