Update Huawei driver doc for Mitaka

Modify following configuration:
Add the new features that Huawei driver support.
Add the corresponding configuration for "create
share from snapshot".
Modify the abilities Huawei driver report.

Change-Id: I74d55c0ba75a7908d8ba346bfe0b4e853e1c66df
Closes-Bug: #1549657

doc/source/devref/huawei_nas_driver.rst

@@ -27,6 +27,7 @@ Requirements
 
 - The OceanStor V3 series V300R002 storage system.
 - The following licenses should be activated on V3 for File:
+
   * CIFS
   * NFS
   * HyperSnap License (for snapshot)
@@ -50,6 +51,9 @@ The following operations is supported on V3 storage:
 - Extend share
 - Shrink share
 - Support multi RestURLs(<RestURL>)
+- Support multi-tenancy
+- Ensure share
+- Create share from snapshot
 
 
 Pre-Configurations on Huawei
@@ -77,10 +81,17 @@ storage systems, the driver configuration file is as follows:
             <UserPassword>xxxxxxxxx</UserPassword>
         </Storage>
         <Filesystem>
-            <Thin_StoragePool>xxxxxxxxx</Thin_StoragePool>
-            <Thick_StoragePool>xxxxxxxx</Thick_StoragePool>
+            <StoragePool>xxxxxxxxx</StoragePool>
+            <AllocType>xxxxxxxx</AllocType>
             <WaitInterval>3</WaitInterval>
             <Timeout>60</Timeout>
+            <NFSClient>
+                <IP>x.x.x.x</IP>
+            </NFSClient>
+            <CIFSClient>
+                <UserName>xxxxxxxxx</UserName>
+                <UserPassword>xxxxxxxxx</UserPassword>
+            </CIFSClient>
         </Filesystem>
     </Config>
 
@@ -95,11 +106,14 @@ storage systems, the driver configuration file is as follows:
   failed to connect, driver will retry another automatically.
 - `UserName` is a user name of an administrator.
 - `UserPassword` is a password of an administrator.
-- `Thin_StoragePool` is a name of a Thin storage pool to be used.
-- `Thick_StoragePool` is a name of a Thick storage pool to be used.
+- `StoragePool` is a name of a storage pool to be used.
+- `AllocType` is the file system space allocation type, optional value is "Thick" or "Thin".
 - `WaitInterval` is the interval time of querying the file system status.
 - `Timeout` is the timeout period for waiting command execution of a device to
   complete.
+- `NFSClient\IP` is the backend IP in admin network to use for mounting NFS share.
+- `CIFSClient\UserName` is the backend user name in admin network to use for mounting CIFS share.
+- `CIFSClient\UserPassword` is the backend password in admin network to use for mounting CIFS share.
 
 Backend Configuration
 ---------------------
@@ -170,33 +184,21 @@ type uses one or more of the following extra-specs:
 
   * huawei_smartpartition:partitionname=test_partition_name
 
-`thin_provisioning` will be reported as True for backends that use thin
-provisioned pool. Backends that use thin provisioning also support manila's
-over-subscription feature. 'thin_provisioning' will be reported as False for
-backends that use thick provisioned pool.
+`thin_provisioning` will be reported as [True, False] for Huawei backends.
 
-`dedupe` will be reported as True for backends that use deduplication
-technology.
+`dedupe` will be reported as [True, False] for Huawei backends.
 
-`compression` will be reported as True for backends that use compression
-technology.
+`compression` will be reported as [True, False] for Huawei backends.
 
-`huawei_smartcache` will be reported as True for backends that use smartcache
-technology. Adds SSDs into a high-speed cache pool and divides the pool into
+`huawei_smartcache` will be reported as [True, False] for Huawei backends.
+Adds SSDs into a high-speed cache pool and divides the pool into
 multiple cache partitions to cache hotspot data in random and small read I/Os.
 
-`huawei_smartpartition` will be reported as True for backends that use
-smartpartition technology. Add share to the smartpartition named
-'test_partition_name'. Allocates cache resources based on service characteristics,
+`huawei_smartpartition` will be reported as [True, False] for Huawei backends.
+Add share to the smartpartition named 'test_partition_name'.
+Allocates cache resources based on service characteristics,
 ensuring the quality of critical services.
 
-.. note::
-    `snapshot_support` will be reported as True for backends that support all
-    snapshot functionalities, including create_snapshot, delete_snapshot, and
-    create_share_from_snapshot. Huawei Driver does not support
-    create_share_from_snapshot API now, so make sure that used `share type` has
-    extra spec `snapshot_support` set to `False`.
-
 Restrictions
 ------------