Created attachment 1198341 [details]
engine log

Description of problem:
When creating a NFS storage domain with invalid specific options - version, retransmission and timeout, the call from the API will ignore the invalid parameters and use the default once instead.
For example:
The API call:
POST ovirt-engine/api/storagedomains 

<storage_domain>
    <name>NFS_SD_TEST</name>
    <storage>
        <address>NFS_SERVER_IP</address>
        <nfs_retrans>131077</nfs_retrans>   <--- INVALID VALUE
        <nfs_timeo>761</nfs_timeo>
        <nfs_version>v3</nfs_version>
        <path>PATH_TO_NFS_SHARE</path>
        <type>nfs</type>
    </storage>
    <storage_format>v3</storage_format>
    <type>data</type>
    <host>
        <name>HOST_NAME</name>
    </host>
</storage_domain>

and the call in engine.log:
2016-09-06 19:00:13,967 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (default task-3) [393bc4a5] START, ConnectStorageServerVDSCommand(HostName = host_mixed_1, StorageServerConnectionManagementVDSParameters:{runAsync='true', hostId='5031c1d5-bdc7-441a-8f02-62c7212479ea', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='NFS', connectionList='[StorageServerConnections:{id='829b6ece-c8c1-44ba-9219-26b854f1b308', connection='NFS_SERVER_IP:PATH_TO_NFS_SHARE', iqn='null', vfsType='null', mountOptions='null', nfsVersion='V3', nfsRetrans='5', nfsTimeo='761', iface='null', netIfaceName='null'}]'}), log id: 5ba5a140

The value of 'nfsRetrans' is 5


Version-Release number of selected component (if applicable):


How reproducible:
100%

Steps to Reproduce:
1. Send a POST request to ovirt-engine/api/storagedomains with body:
<storage_domain>
    <name>NFS_SD_TEST</name>
    <storage>
        <address>NFS_SERVER_IP</address>
        <nfs_retrans>131077</nfs_retrans>   <--- INVALID VALUE
        <nfs_timeo>761</nfs_timeo>
        <nfs_version>v3</nfs_version>
        <path>PATH_TO_NFS_SHARE</path>
        <type>nfs</type>
    </storage>
    <storage_format>v3</storage_format>
    <type>data</type>
    <host>
        <name>HOST_NAME</name>
    </host>
</storage_domain>

2.
3.

Actual results:
The storage domain will be created with default retransmission of 5 and no warning shown up

Expected results:


Additional info: