[ovirt-devel] Upgrade storage domains' version to V4 for 4.1 DCs

[Maor Lipchuk]

On Mon, Sep 19, 2016 at 9:40 AM, Yaniv Kaul <ykaul at redhat.com> wrote:

>
>
> On Sun, Sep 18, 2016 at 3:34 PM, Maor Lipchuk <mlipchuk at redhat.com> wrote:
>
>> Hi all,
>>
>> Few moments ago I've merged the Data Center 4.1 upgrade patches (see [1])
>> The patches introduce a change in the storage domains' meta data to
>> version 4 which are attached to a 4.1 Data Center
>>
>> Currently, there are no differences between version 3 and version 4, but
>> the plan will be to add extra functionalities to V4 storage domains such as
>> supporting qcow 1.1
>>
>
> It'd be great if we can document in ovirt.org somewhere what features are
> going to be available in 4.1 DC.
> I'm aware of qcow2v3, libgfapi, copy via HSM and discard. io=native
> everywhere is a EL7.3 feature, could be coupled with the DC level - not
> sure.
> I hope we can also increase the lease metadata space, but that's possibly
> not a 4.1 goal.
> Y.
>
>

I've added a first initial draft at
https://github.com/oVirt/ovirt-site/pull/477



>
>> For those of you which already have a 4.1 DC, you might encounter some
>> problems since your storage domains are still configured as V3 and should
>> be upgraded.
>>
>> For your master environment to be compatible with those changes the
>> following changes should be performed:
>>
>> * In the engine side:
>> 1. Change the storage domains version from V3 to V4:
>>   update storage_domain_static set storage_domain_format_type = 4 where
>> id = (SELECT id from storage_domains where storage_pool_name = '{Data
>> Center name}');
>>
>> 2. Change the storage pool format type to 4:
>>   update storage_pool set storage_pool_format_type = 4 where name =
>> '{Data Center name}';
>>
>> * In the VDSM side:
>> 1. call the upgradeStoragePool verb:
>>   vdsClient -s 0 upgradeStoragePool {storage_pool_id} 4
>>
>> Please let me know if you encounter any issues
>>
>> Regards,
>> Maor
>>
>>
>> [1]
>> https://gerrit.ovirt.org/#/c/63637/
>> https://gerrit.ovirt.org/#/c/63717/
>> https://gerrit.ovirt.org/#/c/63547/
>>
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>>
>
>
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