Hi,

On 02/27/2018 04:29 PM, Fred Rolland wrote:

Hi,

Just to make clear what you want to achieve:

- DC1 - local storage - host1 - VMs
- DC2 - local storage - host2

You want to move the VMs from DC1 to DC2.

Yes, thanks, this is exactly what I want to accomplish.
BTW, are export domains from different data centers visible to each other?

If not, wouldn't be simpler to export VM#1 in DC #1 to Export domain #1, copy over ssh to DC #2 Export domain, and finally import it into DC #2.

PS. I can't test right now myself, sitting home on sick leave..

What you can do:

- Add a shared storage domain to the DC#1

- Move VM disk from local SD to shared storage domain

- Put shared storage domain to maintenance

- Detach shared storage from DC1
- Attach shared storage to DC2

- Activate shared storage

- You should be able to register the VM from the shared storage into the DC2

- If you want/need move disks from shared storage to local storage in DC2

Please test this flow with a dummy VM before doing on important VMs.

Regards,

Freddy

On Mon, Feb 26, 2018 at 1:46 PM, Andrei Verovski <andreil1@starlett.lv> wrote:

Hi,

Thanks for clarification. I’m using 4.2.

Anyway, I have to define another data center with shared storage domain (since data center with local storage domain can have only 1 host), and the do what you have described.

Is it possible to copy VM disks from 1 data center #1 local storage domain to another data center #2 NFS storage domain, or need to use export storage domain ?

On 26 Feb 2018, at 13:30, Fred Rolland <frolland@redhat.com> wrote:

Hi,

Which version are you using?

in 4.1 , the support of adding shared storage to local DC was added [1].

You can copy/move disks to the shared storage domain, then detach the SD and attach to another DC.

In any case, you wont be able to live migrate VMs from the local DC, it is not supported.

Regards,

Fred

[1] https://ovirt.org/develop/release-management/features/storage/sharedStorageDomainsAttachedToLocalDC/

On Fri, Feb 23, 2018 at 1:35 PM, Andrei V <andreil1@starlett.lv> wrote:

Hi,

I have oVirt setup, separate PC host engine + 2 nodes (#10 + #11) with local storage domains (internal RAIDs).

1st node #10 is currently active and can’t be turned off.

Since oVirt doesn’t support more then 1 host in data center with local storage domain as described here:

http://lists.ovirt.org/pipermail/users/2018-January/086118.html
defined another data center with 1 node #11.

Problem: 

1) can’t copy or move VM disks from node #10 (even of inactive VMs) to node #11, this node is NOT being shown as possible destination.

2) can’t migrate active VMs to node #11.

3) Added NFS shares to data center #1 -> node #10, but can’t change data center #1 -> storage type to Shared, because this operation requires detachment of local storage domains, which is not possible, several VMs are active and can’t be stopped.

VM disks placed on local storage domains because of performance limitations of our 1Gbit network. 

2 VMs running our accounting/inventory control system, and are critical to NFS storage performance limits.

How to solve this problem ?

Thanks in advance.

Andrei

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