FYI, I have just published security updates today PLUS the fixed ixgbe driver as an official update to XCP-ng 8.1 and 8.2.

We made it. This is the end of this huge thread.

A big thank you to everyone involved in debugging the issue.

And this is not a 🐟 :D.

apologies if this was covered. is it possible to link a xcp-ng host to the netdata.cloud?

When you boot in UEFI mode, press "e" to edit the boot command line, you have a line to change the memory for dom0.

I did the manual installation via the XVA. It worked for me.

@Pyroteq Currently I am running my plex server via TrueNAS scale with HW transcoding. So I don't need it with XCP-NG anymore... 🙂 But for the people who do need it, this can be useful to them.

@akurzawa said in Extrlemy slow backup speec = about few MB/s:

@nikade said in Extrlemy slow backup speec = about few MB/s:

Maybe you saw the same thing I did - I also had major issues with backups. Then in the summer of 2019 I upgraded our XOA (Yes, we have the paid version) and everything was going 3-4x times faster. Must have been some major improvement in the XOA code.

So maybe some official info that if you have XO from source Your backup speeds will be as low as 3-4 MB/s? Or what?

Sorry if I was unclear - XOA is built from the same sources so there is no difference in that aspect.
All tho, there was a big performance issue regarding backups which was resolved.

I am using XO from sources in my "private" infrastructure and I can assure you there are no "limits" on purpose.

How about doing your own matrix?

I'm not sure Unitrends is supporting XCP-ng. Please refer to your backup vendor.

Current backup solutions claming to support XCP-ng: https://xcp-ng.org/docs/backup.html

@olivierlambert thank you for your comment.

@chrisarzu

You're very welcome. My solution to the similar problem I'd had was to set up a couple of internal systems as NTP servers so that I always had something with the right time and static IP addresses and pointed everything needing NTP at them.

@dvdhngs

install onto (mdadm/ZFS) RAID 10: no

to use (mdadm/ZFS) RAID 10 as SR: yes, of course!

Hi ! We are experiencing these kind of problems because we activated Continous Replication and frequency was way too low.

Now I want to eliminate all those files in the chain, can I do it manually from XCP-NG Center or XOA ?

Thanks !!!

c2aa1fb3-2ed2-41cf-b242-e2a23e6832e4-image.png

@jokurinopoloski I reviewed your PR!

Thanks for the contribution 🙂

@danp said in XCP-ng 7.5.0 final is here:

@dblogic said in XCP-ng 7.5.0 final is here:

Just tried updating our pool and after updating the master had failed migration of VM (Ubuntu) and then was unable to get VM to start (Missing VDI error). Only solution was to roll master back to 7.4 and everything working again.

I ran into a similar situation when I upgraded to 7.5 this week. Did you check to see if there was a non-existent ISO mounted in the CD rom for the VM in question?

Thank you. That was my problem. I gave cd empty. Everything works.

Actually, looks like I had already written something about it in the Updates Howto: https://github.com/xcp-ng/xcp/wiki/Updates-Howto#a-special-word-about-xcp-ng-75-76-and-live-migrations

anyone can request a change in https://github.com/xcp-ng/xenadmin/issues 🙂

@stormi dd stands for disk dump and does exactly that: Copy a stream of data.
Fio however can be configured for precise workloads and read/write mixes, parallel workloads etc.

So the first thing will only give you streamline benchmarks, what almost nobody cares about.
The second can simulate realworld (VM/database...) workloads, where (controller) Caches and non magnetic storage (Flash, Optane, MRAM...) makes the real difference.
Also use big amount of data, since caches can impact small ones extremely. Don't get me wrong: We need them and they can make huge differences, but as long as your benchmarks fully fit into them, it gives your nonsense/fake results. Also (consumer) SSDs start throttling after some 10 to a very few 100 GB of data written. Their caches fill up and they 'overheat'.

You can spend days on benchmarks and how to do what. 😉

Actually, on any recent enough Linux system (ie not many years old) , the PV drivers are directly included in the kernel. Unless, maybe, a very specific distro decides that they don't want Xen support in their kernel.

So the tools you install on the VMs are merely an agent to make the VM more cooperative with the hypervisor, but they don't affect performance.

The situation is different on Windows systems where you need to install PV drivers to achieve better performance.