kvm

  1. A

    > 3000 mSec Ping and packet drops with VirtIO under load

    I'm running PVE 5.0-30 with two KVM machines with Windows 2016 Servers installed. I did everything like computerized William explained in this video https://www.proxmox.com/de/training/video-tutorials/item/install-windows-2016-server-on-proxmox-ve. So I use ZFS and VirtIO for storage (SCSI) and...
  2. M

    Migration from vmware to PVE: VM settings

    Hi, I have to migrate many differents Virtual Machines from ESXi 4.1 and ESXi5.1 to Proxmox PVE 5. I read the wiki's articles for many Windows guests, but now I have a problem with a Centos 7 VM. In this case we got the guest booting right setting the disk as SCSI and the controller as LSI...
  3. A

    Having issue on proxmox with hetzner

    i am trying to create a virtual container on my existing debian installation. while hosted on hetzner i followed their directives, when i chose a bridged mode with the following configuration auto lo iface lo inet loopback iface lo inet6 loopback auto eth0 iface eth0 inet static address...
  4. G

    Problem: IPv6 für VMs im Subnetz von Hetzner

    Hallo alle zusammen, ich setze auf dem Host Proxmox 5 VE ein. Auf den VMs benutze ich Debian 9 Stretch. Problem: Virtuelle Maschine (VM), die im Subnetz 2a01:4f8:c0:17c2::/64 (ipv6) bzw. 88.198.197.24/29 (ipv4) läuft, klappt das Anpingen und die Namensauflösung mit ipv6-Servern nicht. Das...
  5. H

    VM crash with memory hotplug

    We're having problems with all newer pve-qemu-kvm versions, every version newer than 2.5.19 is causing a unpredictable crash of our VM's. I've setup some tests and reproduce details, can you please check your configuration, with this test you can crash your VM in a few minutes. My test VM...
  6. V

    Hide vm from guest

    Greetings everyone. I'd like to thank the developers of this great server virtualization management solution, really love it. Maybe somebody can help me with my questions. My version of proxmox: 5 beta 1 Virtual machine: Windows 10 x64 My gpu: gtx1060 (passed to vm) Config: cpu: host...
  7. L

    [SOLVED] KSM in mixed OpenVZ/KVM environment on Proxmox VE 3.4

    Hi! I have Proxmox VE 3.4-3 with kernel 2.6.32-37-pve. My server runs several OpenVZ containers together with KVM virtual machines. At the moment cat /sys/kernel/mm/ksm/pages_sharing returns 0 and that's fine because my RAM usage is under 80% and KSM_THRES_COEF=20 in /etc/ksmtuned.conf. My...
  8. Y

    Lvm Or Not inside a Qemu Kvm VPS ?

    Hello, i'm working on a P2V of a Cpanel server (centos 7). What is the best FS / Partitioning ? I'm reading that using LVM i can do a Hot Resize but i lose performance ... I think i will need to resize mi virtual hd in the future .. Is it ok ext4 ? Thanks !
  9. G

    KVM guests freeze (hung tasks) during backup/restore/migrate

    This issue has been with us since we upgraded our cluster to Proxmox 4.x, and converted our guests from OpenVZ to KVM. We have single and dual socket Westmere, Sandy Bridge and Ivy Bridge nodes, using ZFS RAID10 HDD or ZFS RAIDZ SSD arrays, and every one of them is affected. Description When...
  10. J

    Hugepages and Multiple VMs

    I'm trying to run multiple KVM VMs with hugepages enabled on Proxmox VE 4.4-12/e71b7a74. I've followed instructions on the web to set the vm.nr_hugepages using sysctl in order to reserve the amount of memory that I plan to use with my VMs. However, once I start the first VM, the number of free...
  11. B

    [SOLVED] Migration from esxi

    Hi, Next week i planing to migrate my esxi server to proxmox. I find a guid for this: https://pve.proxmox.com/wiki/Migration_of_servers_to_Proxmox_VE Now i install a test system to a not used server to try how can i migrate all the vms-s from esxi to proxmox. I stuk at hard disk part. I...
  12. A

    KVM / CentOS 6.8 random hang with 100% CPU

    I have a problematic VM that randomly hangs with CPU usage pegged to the max. the load average goes 30+ and though I can ping the machine as normal, the console never responds and all users are locked out. Until the crash, the system runs under 1.00 load average. I have to stop/start to get it...
  13. V

    ATTENTION: Firewall and KVM Routing

    Possible many users search about problems with KVM can not communicate to outside. A ping to inside is running, but a ping to outside not! We have search about this many hours! A blocking will going on, when: Firewall for the KVM machine is DISABLED <<<< NOT UNDERSTANDABLE WHY !!! but when...
  14. J

    implementing bash script in ProxMox VE?

    Hello, Basically, I am running an LXC Ubuntu container and a Windows 7 VM in my environment. I want to be able to clone these and have each clone designated with a unique host name. I have read that bash scripting might help me accomplish this but I am lost on how I would implement this with...
  15. G

    After unplanned reboot locked VMs don't start

    Occasionally we experience unplanned, spontaneous reboots on our Proxmox nodes installed on ZFS. The problem we are having is related to vzdump backups: if a reboot happens during an active vzdump backup that locks a VM, after reboot the locked guest will not start, and needs to be manually...
  16. P

    [SOLVED] KVM bridged on Hetzner, can't add second IP

    Hello, we have a proxmox 4.4 node hosted on Hetzner and configured with bridged networking. The machine works fine with this setup and hosts 4 KVMs with additional IPs (no subnet) with separate MACs. Each VM has a single IP and is working as expected (Centos cPanel VMs). We are trying to add...
  17. Y

    Can't boot restored KVM VM

    Hello, i can't boot a Centos KVM VM form a vzdump backup done on a pve 3.4-6 to last version: No error on vzdump log: --------------------------------------------------------------------------- less vzdump-qemu-103-2017_02_02-06_20_08.log Feb 02 06:20:08 INFO: Starting Backup of VM 103...
  18. B

    Reuse KVM image on rebuilt server.

    I had a Proxmox install on XFS which kept crashing. I had built a KVM machine to host OpenMediaVault on a separate hard drive. Having rebuilt the machine on EXT4 (I really hope that I would use XFS but I don't trust it on Proxmox after the failure), I wanted to be able reuse the KVM image on...
  19. R

    Netzwerk/Host -> VM Connection Problem

    Hallo zusammen, bin derzeit dabei mir Proxmox anzusehen und bin derzeit auf ein Problem gestossen. Nach erstellen und Installieren eines Gastsystems (Debian 8 i686 mit E1000 Netwerkkarte und vmbr0/eth0) kann ich ohne Probleme raus pingen also Google, GW und Interne IPs gehen. Anders herrum geht...
  20. G

    Bad udp cksum

    I got problem with a host network (pve-manager/3.4-6/102d4547 (running kernel: 2.6.32-48-pve)). I can ping everything from host but can't ssh to it and can't open any www even do apt-get update. I use pfsense inside kvm on the same host as a gateway (which works great) and another openvz guests...

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