[ovirt-users] Consolidating LUNs in iSCSI storage domain

[Nir Soffer]

On Sun, Feb 7, 2016 at 1:41 PM, Colin Coe <colin.coe at gmail.com> wrote:
> Hmm, OK.  Are there plans to eventually support what I'm looking for?

Probably no, you can open a bug and describe the use case, so we can
consider it for future development.

>
> On Sun, Feb 7, 2016 at 5:36 PM, Elad Ben Aharon <ebenahar at redhat.com> wrote:
>>
>> Hi,
>>
>> While the storage domain is active and the VMs are running, data is
>> written to the disks located on this storage domain. Hence, your suggestion
>> might cause data corruption. Anyway, it's not supported.
>>
>> From the doc:
>> "Update existing connection (PUT) It will only be possible to update
>> connection details when all storage domains referencing it are in
>> maintenance mode..."
>>
>>
>>
>> On Fri, Feb 5, 2016 at 1:34 AM, Colin Coe <colin.coe at gmail.com> wrote:
>>>
>>> Hi and thanks for the response
>>>
>>> Is there any way that this could be done without putting the entire
>>> datacenter (and I assume shutting done all the VMs) into maintenance mode?
>>>
>>> I was thinking along the lines of:
>>> - Put all hosts except for the the SPM into maintenance mode
>>> - Determine which LUNs match to the "/dev/dm-*" devices that the three I
>>> want to remove (rhev-data01, rhev-data02, rhev-data03)
>>> - Determine which LUN matches the "/dev/dm-*" devices that I want to keep
>>> (rhev-data04)
>>> - pvmove rhev-data01 rhev-data04
>>> - pvmove rhev-data02 rhev-data04
>>> - pvmove rhev-data03 rhev-data04
>>>
>>> The pvmove commands above for illustration only, I know thats not how the
>>> LUNs would be called.
>>>
>>> Does that look like it would work?
>>>
>>> Thanks
>>>
>>>
>>> On Thu, Feb 4, 2016 at 5:20 PM, Elad Ben Aharon <ebenahar at redhat.com>
>>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> oVirt allows such operations using this feature [1].
>>>> Basically, while the storage domain is deactivated (maintenance status),
>>>> you'll have to replicate all the data to the fourth LUN (from the storage
>>>> server side), replace the storage connections of this storage domain from
>>>> RHEVM REST API (explained in [1]) and to activate the domain.
>>>>
>>>>
>>>> [1] http://www.ovirt.org/Features/Manage_Storage_Connections
>>>>
>>>>
>>>>
>>>> On Thu, Feb 4, 2016 at 1:17 AM, Colin Coe <colin.coe at gmail.com> wrote:
>>>>>
>>>>> Hi all
>>>>>
>>>>> In one of our RHEV setups (v3.5.4) the iSCSI storage domain consists of
>>>>> four LUNs.  (full details in the attached text file).
>>>>>
>>>>> I want to consolidate all the data on LUNs
>>>>> iqn.2003-10.com.lefthandnetworks:iscsi:341:rhev-data01
>>>>> qn.2003-10.com.lefthandnetworks:iscsi:453:rhev-data02
>>>>> iqn.2003-10.com.lefthandnetworks:iscsi:518:rhev-data03
>>>>> to LUN
>>>>> iqn.2003-10.com.lefthandnetworks:iscsi:687:rhev-data04
>>>>>
>>>>> Is this possible?
>>>>>
>>>>> Thanks
>>>>>
>>>>> CC
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at ovirt.org
>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>
>>>>
>>>
>>
>
>
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