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@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@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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