Is some list available of known problems with cmdlets in 8.0.x?
You can use Get-NaHelpUnsupported to get a rough idea of which Toolkit cmdlets are not available due to missing APIs on a given controller. Here's an example from 8.0.3RC1.
PS C:\> Connect-NaController 10.61.166.46
Name Address Ontapi Version
---- ------- ------ -------
10.61.166.46 10.61.166.46 1.13 NetApp Release 8.0.3RC1 7-Mode: Tue Feb 14 22:32:18 PST 2012
PS C:\> Get-NaHelpUnsupported
Name Api Category
---- --- --------
Get-NaCifsShareAcl {cifs-share-acl-list-iter-start, cif... cifs
Get-NaSnaplockComplianceClock {snaplock-get-system-compliance-cloc... snaplock
Remove-NaCifsShareAcl {cifs-share-ace-delete} cifs
Set-NaCifsShareAcl {cifs-share-ace-set} cifs
Set-NaSnaplockComplianceClock {snaplock-set-system-compliance-clock} snaplock
Note that this command outputs nothing when sent to a controller running 8.1RC2, so 8.1 appears to be the convergence point at which all Toolkit cmdlets are available.
I also tried variations like 'no_caching' and "no_caching"
This appears to be a long-standing bug in the cifs-share-change API. A possible workaround for this one is to use Invoke-NaSsh:
PS C:\> Invoke-NaSsh cifs shares -change test2 -no_caching
WARNING: 1 share(s) have been successfully modified