[ovirt-users] Can't move/copy VM disks between Data Centers

[Andrei V]

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 at starlett.lv
> <mailto:andreil1 at 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 at redhat.com
>>     <mailto:frolland at 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/
>>     <https://ovirt.org/develop/release-management/features/storage/sharedStorageDomainsAttachedToLocalDC/>
>>
>>     On Fri, Feb 23, 2018 at 1:35 PM, Andrei V <andreil1 at starlett.lv
>>     <mailto:andreil1 at 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
>>         <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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>>
>
>
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