[ovirt-users] Consolidating LUNs in iSCSI storage domain

[Colin Coe]

Hmm, OK.  Are there plans to eventually support what I'm looking for?

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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