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    • H

      Xen hypervisor features.
      • hack3rcon

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      olivierlambert

      Please take time to read carefully the previous link I send.

      If you can't spot it, re-read it slowly, you might see this link: https://xenbits.xen.org/docs/unstable/support-matrix.html

    • D

      IOMMU with NVIDIA quadro
      • declan.marks

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      olivierlambert

      It should work, yes.

    • P

      XcpNG - Xen kernel crash (FATAL TRAP: vector = 2 (nmi))
      • petr.bena

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      olivierlambert

      Hi @mauricio_hps

      This is a XCP-ng forum, please try with XCP-ng 😉 https://xcp-ng.org

    • talbaror

      Ubuntu 18.04 get to read only mode system
      • talbaror

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      stormi

      @talbaror by the way you can find discussion about all this, and what users have tried, etc., at:

      https://xcp-ng.org/forum/topic/2496/xcp-ng-nfs-timeout-values-and-storage-node-active-standby-failover https://github.com/xcp-ng/xcp/issues/334 stormi created this issue in xcp-ng/xcp open Use NFS hard mount instead of soft mount to avoid RO VMs (or offer option)? #334
    • M

      Max allowable deviation in top "st" parameter
      • Martín Lorente

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      M

      5% sounds too much for me, but I'll check it in some populated pools (with host's cpu below 80%) to have a better idea.

    • O

      Losing Time on multiple VM machines
      • Otis2772

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      jtbw911

      @Otis2772 Where is your time synchronization coming from? Time differences can be caused by a slew of things including power settings (VM or not), CPU availability, networking connectivity, etc. Are they all the same OS or different OSes?

    • H

      noob question about clustering
      • harajukakei

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      olivierlambert

      64 hosts tops. But in general, people tends to use around 16 to 20 hosts max in a pool.

      Don't forget about support 😉

    • H

      migrated centos 7 from kvm or esx drops a lot of network packets (centos 8 / ubuntu is fine)
      • hoberion

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      olivierlambert

      Check dmesg in the VM

    • M

      installing Openwrt on xcp-ng
      • moussa854

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      M

      I am back to the office and I am troubleshooting different settings and connection setups. I appreciate all your input. The issue is configuring the right NIC0/NIC1/WAN/ and LAN. Once I am done I post my setting. Thanks again for everyone.

    • C

      Solved win 2019 vm-checkpoint failed on xcp-ng 7.6
      • cheese

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      olivierlambert

      Wow, didn't know it was possible to violate those rules!

    • P

      Migrating docker host to new XCP host not working.
      • pnunn

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      P

      Yep.. that did it... started it on the older host, and can now migrate it backwards and forwards with on issues...

      Thanks Olive... as always.

      Peter.

    • I

      domU hang on Xen v4.7
      • ibcos-mark

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      I

      @r1 @olivierlambert Hello!

      There is nothing in any logs at all, on either the Dom_0 or Dom_U at the time of the crash, the journal on the Dom_U stops updating at the instant of the freeze and only resumes after it has been destroyed and re-started.

      We are in the process of moving sites to HVM, that is an ongoing part of our plan, 1 down...

      We've not tried running a screen session, but that is a very good idea, and we'll do that - thanks! I don't believe we've tried running in debug mode either, so will pursue that too.

      Thanks for the advice, I appreciate it - I know it isn't anything even remotely related to your work, but as an XCP-ng user personally, I wasn't sure where else to try.
      Thanks, Mark

    • L

      Question about hardware interrupts going exclusively to VCPU0
      • Laura Herrmann

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      olivierlambert

      Also you might use http://irqbalance.github.io/irqbalance/ to help "spreading" the load on various CPUs.

    • L

      Nested virtualization
      • lmartinez073

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      olivierlambert

      In XO: Advanced tab of the VM. Enable nested virt, then boot the VM. That's it!

    • D

      Can't start or shutdown VM's after storage was powered off
      • dgleba

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      Forza

      In FreeNAS. exports file you should have fsid=123, with a unique number for each exported path. If not it can cause a problem if the nfs server is rebooted while the pool is up.

      https://linux.die.net/man/5/exports
      https://www.suse.com/support/kb/doc/?id=000017897

      The stale mounts are in xcp-ng.
      But this is just a theory.

      During the power outage. Did all xcp-ng hosts and the FreeNAS as boxes go down? How did you boot up? You wrote you set up fresh servers?

    • J

      CPU Topology (Windows Specifically) only ever shows 2 sockets
      • jordancalhoun

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      J

      Okay, this makes sense, thank you for the clarification. The reason I was asking I've been having crazy issues with xcp-ng on my server with VMs crashing all the time on boot etc and have been trying to troubleshoot and just wanted to look into this as I've done every other thing I can possibly think of. thanks again!

    • txsastre

      This topic is deleted!
      • txsastre

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      No one has replied

    • H

      Solved Nested Virtualization - Running ESXi 7.0.0 on XCP-NG 8.1
      • Haribo112

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      ruskofd

      Yes, for this generation of CPU, you can't run ESXi superior to 6.5.

    • J

      USB Passthrough Seen as Root Hub in VM
      • johanb7

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      K

      @johanb7 I had the same problem in the past with FTDI-based USB device. I could see it in Xen host, but not in VM. I've spent many evenings trying to make it visible in VM, but with no luck though.

      I don't know why, but seems that some USB devices won't attach to VM.

    • G

      Windows Time Sync
      • gofm

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      N

      @gofm not sure on windows but on linux the walltime is written in UTC to the CMOS when you shutdown or when you explicitly call hwclock command. the time written in the virtualized CMOS should contain an offset to the host clock so when the VM start it read the host time plus the offset. I suppose that if you disable the time sync in windows, set the time and reboot you will come up with a correct clock.
      I have no link to point you at, this is just a sum of things I remember but may be dated and/or wrong still if you can reboot your Windows VM could be worth testing.