@olivierlambert If you want me to check anything else, just tell me and I will test for you.

Many Thanks

BR
Marco

@olivierlambert below you see two bacups on the stat, The first is with NDB and the second without.

@olivierlambert Thanks a lot for the quick reply. I checked with the command "xentop" on my server.

When I run the Backup, with or without the NDB the CPU increase from 50% to 120-160%.

Now I'm testing one backup per time, and what I see is that in both scenarios the transfer rate is: 110.18 MiB/s so almost the 1 GB. SO I think the bottleneck is the network. I mean on the Hypervisor I have 2 GB because I have the LACP, but the Virtual NIC of the XO is 1G.

Did I unterstand correctly?

Thanks

BR
Marco

Hi all,
sorry I'm not expert and I would lik to ask you clarifications regarding the network protocol NBD.
I'm using the last version of Orchestra (update today) from source, and I'm testing it with Xen Server 8.2.

I did a full backup of one VM and it took 27 Min.
• Duration: 27 minutes
• Size: 99.87 GiB
• Speed: 63.32 MiB/s

Than I did it again with NBD (4 connection) and the result is the same.
• Duration: 27 minutes
• Size: 99.87 GiB
• Speed: 63.25 MiB/s

I can confirm the NBD because now I see also the text (Transfer data using NBD).

CBT I can't test for the moment because the XenServer has only the standard license.

Can someone explain me a bit more in detail how it works?

Many thanks in advance

BR
Marco

mmm ok. Let's take an example. Full disaster recovery. I have my backups on the NAS but I lost everything and I have to install everything from scratch.
What are the steps I need to do? What I imagine is:

• reinstall the XCP-ng
• reinstall the Orchestra on it
• reconfigure the NAS on it

After that I can restore the metadata and backups, and also the shared storage will be reconfigured automatcally?

Are more or less those the steps?

BR
Marco

@nikade yes I will do.
Easy question. With Xen actually I use also the Windows APP Xen center to manage the pool.
With XCP-ng if I undestood correctly will be used Orchestra as management tool, right?

In that case would be better to have Orchestra as physical server outside the Hypervisor environment? or?

BR
Marco

@nikade Sorry for the late answer. At the moment running the free version, but I would like to switch to supported one, because we are a company and we want the systems and the support really reliable.

There is something interesting that attract me in the project. Maybe I will ask a demo to @olivierlambert to go deep in some aspects.

BR
Marco

@olivierlambert Yes I know, I'm evaluating several solution, also the Xen 8.2 and yours.

I still don't have clear idea, I have to read more about your xcp-ng

Thanks for the support

BR
Marco

@olivierlambert I did double check,

Unfortunately I'm in the case where all the options are disabled and I also double checked my Backup Job, but this one already double checked
yesterday and I can't ignore it because the Job fail.

If you need more information or log to understand better, just let me know, I will be happy to share the info to improve the tool,

BR
Marco

@olivierlambert Thanks a lot for your answer.
May I ask you exactly where should I look for that option because for me is no clear.

On XO under Pool->Network all the interfaces have the NBD disabled.
On the Citrix APP I didn't find any opition and I had a look also on the Synology NAS that actually I'm using to test the backup and also there I didn't find the option.

Sorry in advance if this is a stupid question

Thanks a lot again!

BR
Marco

Hi everybody,
I'm testing XO Community (commit c9699 from today) with a pool of Xen 7.1 LTS.
I have the error MESSAGE_METHOD_UNKNOWN(VDI.get_cbt_enabled) when I try to start a Delta Backup, even if I have the option "Use NBD + CBT to transfer disk if available" disabled.

If I understood correctly my Xen version doesn't support this call, but what I didn't understand is that XO should not use this call when the function is disabled,

Thanks in advance
Marco