Add verbage about caveat for creating flexcache of a snapmirrored destination

[dstauba]

Page URL

https://docs.netapp.com/us-en/ontap/flexcache/supported-unsupported-features-concept.html

Page title

Supported and unsupported features for FlexCache volumes

Summary

I checked this page and found that as of 9.8, ONTAP supports creating a Flexcache volume of a snapmirrored destination, however, I discovered that it will fail if the snapmirror is actively being updated. Once the snapmirror was "Idle" the flexcache volume creation was successful.

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[netapp-lenida]

Thanks @dstauba. I'm looking into to this.

[netapp-lenida]

Thanks @dstauba. The topic has been updated.