[ovirt-users] Consolidating LUNs in iSCSI storage domain

[Colin Coe]

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
>>
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>>
>>
>
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