Discussions specific to the VMware vSphere hypervisor
Post Reply
lc.escv
Novice
Posts: 4
Liked: never
Joined: Aug 04, 2017 10:29 am
Full Name: Laurent
Contact:

UUID not unique in same vCenter

Post by lc.escv » Aug 04, 2017 11:23 am

Veeam Backup and Replication creates replica with same UUID as the original VM. An UUID that is not unique in the same vCenter can generate issues with others systems, for example with Simplivity (the system identifies the VM with UUID, if 2 VM are with the same UUID, the system trigged « random » one or the other). It would be very appreciate, if the Veeam replica process could handle the UUID question. Perhaps the choice should be given to the administrator :

1) Creation of replica ; original UUID yes/no
2) Running of replica ; original UUID yes/no
3) Restore from replica ; original UUID yes/no

regards

foggy
Veeam Software
Posts: 16695
Liked: 1343 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: UUID not unique in same vCenter

Post by foggy » Aug 07, 2017 1:25 pm

Hi Laurent, basically BIOS UUID is preserved since it is used by guest BIOS to identify the VM. Besides, many software applications are using it to verify licensing/configuration data, etc., so changing it during replication would result in issues upon failover. But thanks for the feedback anyway.

lc.escv
Novice
Posts: 4
Liked: never
Joined: Aug 04, 2017 10:29 am
Full Name: Laurent
Contact:

Re: UUID not unique in same vCenter

Post by lc.escv » Aug 08, 2017 12:24 pm

Hi Alexander, thank you for your reply. I understand what you mean and my question is more a request of a new feature in Veeam. It can be normal that the UUID from replica is the same as the original VM when it is running (on behalf of veeam server); but most of the time the replica is down. Simplivity has trouble with non unique UUID in same vCenter, sometime tasks are triggered on replica instead of the original VM. I saw that in hyper-V environment, the administrator can chose to restore a replica with same UUID or not; it was the reason that I decide to post this question/request. In our environment Simplivity, the non unique UUID is a problem.

Thank you in advance for your time, regards, Laurent

NightBird
Service Provider
Posts: 158
Liked: 21 times
Joined: Apr 28, 2009 8:33 am
Location: Strasbourg, FRANCE
Contact:

Re: UUID not unique in same vCenter

Post by NightBird » Aug 08, 2017 1:06 pm

I think it's on the Simplivity side to change things, like use moref id instead of VM Bios UUID.
It's quite stupid to use UUID if in the same vcenter system you can have 2 VM with the same Bios UUID... moreover moref id is unique because generated by vcenter at the moment of the object (VM) registration.

foggy
Veeam Software
Posts: 16695
Liked: 1343 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: UUID not unique in same vCenter

Post by foggy » Aug 08, 2017 6:08 pm 1 person likes this post

Yep, that's why Veeam B&R itself uses moref to track VMs.

Laurent, your request is accepted, just wanted to justify the current behavior for you.

lc.escv
Novice
Posts: 4
Liked: never
Joined: Aug 04, 2017 10:29 am
Full Name: Laurent
Contact:

Re: UUID not unique in same vCenter

Post by lc.escv » Aug 10, 2017 8:52 am

Hi Alexander,
I thank you for your understanding and for your open-mindedness. If you need some informations, please let me know.
Regards, Laurent

daphnis
Enthusiast
Posts: 47
Liked: 3 times
Joined: Jun 13, 2012 7:01 pm
Contact:

[MERGED] Prevent overwriting of instanceUuid in replication

Post by daphnis » Sep 30, 2017 3:27 am

When a VM is replicated to a destination site, Veeam preserves the instanceUuid (AKA vc.uuid in the VMX file) as it should. If one manually changes the instanceUuid at the destination and the Veeam replication job re-runs and moves data, that ID is overwritten with the one in the source (because this is what is in the source VMX). Is there a registry key somewhere that will prevent Veeam from behaving this way? I need those instanceUuid numbers to be different and yet still be able to replicate the contents of the source VM's disk. Can this be done?

foggy
Veeam Software
Posts: 16695
Liked: 1343 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: UUID not unique in same vCenter

Post by foggy » Oct 01, 2017 10:23 pm

Please review this thread for considerations behind this behavior. Thanks.

daphnis
Enthusiast
Posts: 47
Liked: 3 times
Joined: Jun 13, 2012 7:01 pm
Contact:

Re: UUID not unique in same vCenter

Post by daphnis » Oct 02, 2017 12:46 am

While this isn't *exactly* the same thing as I'm reporting, it's close enough that I can see a feature request still applies and I'll have to find another way to accomplish this.

lc.escv
Novice
Posts: 4
Liked: never
Joined: Aug 04, 2017 10:29 am
Full Name: Laurent
Contact:

Re: UUID not unique in same vCenter

Post by lc.escv » Jan 08, 2018 2:11 pm

Hi Alexander,

Happy new year to you! I have just updated to the new version 9.5 Update 3. It seems to run fine :-)

Do you think that you will have time to find a way to solve the question of UUID not unique in same vCenter or is this question aborted? I thank you in advance for your answer.

Laurent

foggy
Veeam Software
Posts: 16695
Liked: 1343 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: UUID not unique in same vCenter

Post by foggy » Jan 08, 2018 2:20 pm

Hi Laurent, Happy New Year to you too! I cannot comment on when and whether this request is going to be addressed - we prioritize all requests based on their demand and actual value to the product and have a long list of features to choose from.

mdxyz
Novice
Posts: 5
Liked: never
Joined: Jan 05, 2018 3:19 am
Contact:

Re: [MERGED] Prevent overwriting of instanceUuid in replicat

Post by mdxyz » Jan 12, 2018 4:08 am

daphnis wrote:When a VM is replicated to a destination site, Veeam preserves the instanceUuid (AKA vc.uuid in the VMX file) as it should. If one manually changes the instanceUuid at the destination and the Veeam replication job re-runs and moves data, that ID is overwritten with the one in the source (because this is what is in the source VMX). Is there a registry key somewhere that will prevent Veeam from behaving this way? I need those instanceUuid numbers to be different and yet still be able to replicate the contents of the source VM's disk. Can this be done?
You could run a post job PowerCLI script to change the uuid.

Edit: just noticed I'm replying to a post from September.... oh well.

morty
Influencer
Posts: 24
Liked: never
Joined: Apr 05, 2018 8:34 pm
Full Name: Ryan Mortier
Contact:

[MERGED] Does VM Copy take care of generalizing the Windows

Post by morty » Jul 12, 2018 9:05 pm

I've read that when cloning a Windows guest I need to take into consideration things like UUID and MAC address. Does VM Copy do this for me so I can just copy a VM to the same cluster and network under a different name and run it simultaneously with the original VM?

Vitaliy S.
Veeam Software
Posts: 21414
Liked: 1274 times
Joined: Mar 30, 2009 9:13 am
Full Name: Vitaliy Safarov
Contact:

Re: UUID not unique in same vCenter

Post by Vitaliy S. » Jul 13, 2018 10:49 am

To the best of my knowledge it doesn't, so you will need to perform manual steps here.

Post Reply

Who is online

Users browsing this forum: Brad.linch, Google [Bot], newbyam, Regnor and 32 guests