Hi John,
Thanks for your response
Thanks



Ray

From: John Else
Date: 2013-12-17 00:22
To: 石磊
CC: xen-api
Subject: RE: RE: [Xen-API] How to disallow snapshot vdi when taking a snapshot 
to vm
Hi Ray,

> Why don't we allow to set allowed-operations to RW mode in vdi so that I can 
> define the operation myself in creating vdi? 
> [root@xcp1 ~]# xe vdi-param-list
> allowed-operations (SRO): clone; snapshot 

The allowed-operations fields are supposed to be read only - their main purpose 
is to allow GUI clients to know which options to display (e.g. the "start" 
button in XenCenter won't be shown for a running VM, since starting that VM 
wouldn't make sense).

There's no mechanism for creating user-defined operations.

John
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