[ovirt-users] creation of lun disks

[Fabrice Bacchella]

> Le 13 mai 2016 à 20:04, Juan Hernández <jhernand at redhat.com> a écrit :
> 
> On 05/13/2016 04:21 PM, Fabrice Bacchella wrote:
>> I'm trying to generated a lun disk, using the python SDK.
>> 
>> My code can be found
>> at https://github.com/fbacchella/ovirtcmd/blob/master/ovlib/disks/__init__.py
>> 
>> If a try to see the content of a existing disk and test with :
>> print disk.get_type()
>> print disk.get_storage_type()
>> 
>> I'm getting :
>> None
>> lun
>> 
>> Now I try to create another LUN disk with
>> kwargs['storage_type'] = 'lun'
>> kwargs['type_'] = 'system'
>> 
>> I'm getting:
>> 
>>> POST /api/disks HTTP/1.1
>>> <disk>
>>>    <type>system</type>
>>>    <interface>virtio-scsi</interface>
>>>    <lun_storage>
>>>        <logical_unit id="3600c0ff00026285aed8f355701000000"/>
>>>    </lun_storage>
>>>    <storage_type>lun</storage_type>
>>> </disk>
>> ...
>> < <fault>
>> <     <reason>Incomplete parameters</reason>
>> <     <detail>Storage [type] required for invoke0</detail>
>> < </fault>
>> 
>> changing to 
>>    kwargs['type_'] = None 
>> change nothing, I'm still getting the same error message.
>> 
>>> POST /api/disks HTTP/1.1
>>> <disk>
>>>    <interface>virtio-scsi</interface>
>>>    <lun_storage>
>>>        <logical_unit id="3600c0ff00026285aed8f355701000000"/>
>>>    </lun_storage>
>>>    <storage_type>lun</storage_type>
>>> </disk>
>> ...
>> < <fault>
>> <     <reason>Incomplete parameters</reason>
>> <     <detail>Storage [type] required for invoke0</detail>
>> < </fault>
>> 
>> 
>> What did I do wrong ? There is nothing about that in the logs
>> 
> 
> When creating a LUN disk you need to specify the type (fcp or iscsi)
> inside the "lun_storage" element, so you need to send an XML document
> like this:
> 
>  <disk>
>    <interface>virtio</interface>
>    <lun_storage>
>      <type>fcp</type>
>      <logical_unit id="3600c0ff00026285aed8f355701000000"/>
>    </lun_storage>
>  </disk>
> 
> To do that with the Python SDK you need the following code:
> 
>  params.Disk(
>    interface='virtio',
>    lun_storage=params.Storage(
>      type_='fcp',
>      logical_unit=[
>        params.LogicalUnit(
>          id='0QEMU_QEMU_HARDDISK_drive-scsi0-0-0-2',
>        ),
>      ],
>    ),
>  )
> 

Ok thanks, but now I'm checking the rsdl (I should have done that earlier) and see :

<parameter required="true" type="xs:string">
    <name>disk.lun_storage.type</name>
</parameter>
<parameter required="true" type="collection">
    <name>disk.lun_storage.logical_unit</name>
    <parameters_set>
        <parameter required="true" type="xs:string">
            <name>logical_unit.id</name>
        </parameter>
        <parameter required="true" type="xs:string">
            <name>logical_unit.address</name>
        </parameter>
        <parameter required="true" type="xs:int">
            <name>logical_unit.port</name>
        </parameter>
        <parameter required="true" type="xs:string">
            <name>logical_unit.target</name>
        </parameter>
    </parameters_set>
</parameter>

Given the output for a existing SAN disk, I see :
    <lun_storage id="3600c0ff00026285a2091355701000000">
        <logical_unit id="3600c0ff00026285a2091355701000000">
            <serial>SHP_MSA_2040_SAS_00c0ff26285a00002091355701000000</serial>
            <vendor_id>HP</vendor_id>
            <product_id>MSA 2040 SAS</product_id>
            <lun_mapping>33</lun_mapping>
            <size>1099511627776</size>
            <paths>0</paths>
            <disk_id>dd98b206-08e4-48c0-9795-d10bc7581a95</disk_id>
        </logical_unit>
    </lun_storage>
There is no address, port or target, that are needed only for iscsi. I tried without and everything was fine. So I think they are not required.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160514/ba84c554/attachment-0001.html>