[Engine-devel] LOCALFS path validation

[Itamar Heim]

On 05/21/2012 09:37 PM, Gilad Chaplik wrote:
> Hi Pahim,
>
> Thanks for the input!
> Comments inline.
>
> Thanks,
> Gilad.
>
> ----- Original Message -----
>> From: "Amador pahim"<apahim at redhat.com>
>> To: engine-devel at ovirt.org
>> Sent: Monday, May 21, 2012 5:52:34 PM
>> Subject: [Engine-devel] LOCALFS path validation
>>
>>
>> Hello,
>>
>> I'm starting to know the engine code. I chose a little unstandardized
>> behaviour to follow through the devel process. I have a patch and
>> I'd like to know if you fell relevant to correct this issue:
>>
>> - Description: Adding a LOCAL storage [1], webadmin does not validate
>> path against regex, sendind the invalid path (with final slash) to
>> vdsm [2] [3]. But, adding a NFS storage, the path is validated
>> before contacting vdsm [4] avoiding extra vdsm processing and
>> quickly/clearly informing user about what's wrong.
>>
>> - Expected result: Same behaviour to NFS and LOCALFS storage path
>> validation. Validate LOCALFS path in webadmin before send it to vdsm
>> [5].
>
> you may and should send a patch :)
>
>>
>> - Newbie doubt: Wouldn't be better to validate the both local and nfs
>> path on the backend, achieving all user interfaces/APIs?
>
> Because we have a rich client app (gwt), we can perform the validation also in the client side very easily,
> we do that to avoid unnecessary calls to the backend side, and to have a better&  responsive ui
> (client side validation is performed instantly - without the need to wait).
>
> Anyway, every validation performed in the client side needs to be performed also in backend side (for api, and other reasons (security?)).

the client side can validate the format of the path, not if it really 
exists.
do you mean local storage via the wizard, or just adding another storage 
domain?
the 'configure local storage' wizard requires the host to be in 
maintenance, which may or may not be a problem to implement this type of 
validation.