kvm

  1. KVM slow I/O with DL380 g8 + 1gb cache

    Hi all! I've got a HP DL380 G8 running with 2x300GB 15k SAS in RAID 1 and 4x300GB 15k SAS in RAID10. Controller has 1GB of cache, Write Cache is enabled, BBU is present. Controller status is ok. I've just set it up (yes, raid resync is long done) and moved my VMs from my other server. LXC...
  2. High swap usage,alot of free RAM

    Hey, I've been using Proxmox for a while now, and I'm very happy with it. The only major issue I could not solve so far with the manual is the swap usage. I'm using an NFS share for storage, and the KVM processes seem to use quite a bunch of swap, even trough there is plenty of RAM to use...
  3. [SOLVED] Is there a recommended way to restrict IP addresses to VMs?

    How do you restrict (KVM) VMs to only use their assigned IPv4 and IPv6 addresses? I'm looking for something like filtering IPs by MAC addresses (for ex. via ebtables). Is there support for something like that built into Proxmox? What is the recommend way? I can't be the only one who would need that.
  4. Install containers/KVM on formatted ext4 lvm from /dev/pve/data(thin) on an SSD or NAS drive(ironwolf or skyhawk)?

    I have done this twice with a WD green and purple(both died, green was not suited for 24/7 anyways and purple was 2nd hand and I got cheap). Now I've got an SSD, where it initializes /dev/pve/data to make use of a big chunk of the SSD's capacity, so I what I usually do is make use of it via...
  5. [SOLVED] Storage "Max Backups" option doesn't have any affect

    I run nightly KVM backups to an offsite NFS share that I have configured directly as a Proxmox storage, but I unfortunately only have space for a limited number of backups, so naturally I have the storage "Max Backups" option set to 3. Checked back a few (5) days later to find the storage almost...
  6. Shrink / Reduce a volume with an LVM-XFS partition

    I need to shrink a Proxmox-KVM raw volume with LVM and XFS. Now, XFS doesn't support shrinking as such. It's possible to hack around this with xfsdump and xfsrestore, but this would require 250G data to be copied offline, and that's more downtime than I like. Whats the alternative? I was...
  7. Incorrect RAM usage in webui for VM

    Hello, It seems the ram usage in the webui is incorrectly reported in our case. The VM is an ubuntu 20.04. The host is running ZFS. Ballooning is off. This is happening for all of our VMs. Here's a picture of the webui: and here is free inside the VM total used...
  8. Question regarding vCPU for KVM

    We are looking to enable hotplug for the CPU for KVM guests. I've seen that it's only possible with vCPU and not Sockets nor Cores. Assuming the host has 32 cores, would it be best practice to set Sockets: 2 Cores: 16 and set the vCPU to 6 or according to the guest CPU need. If I understand...
  9. OMV, Nextcloud mit RAID & Proxmox?

    Hallo, ich bin Neuling mit Proxmox und Virtualisierung mit Servern. Mit Linux kenne ich mich aber schon seit mehr als 6 Jahren aus. Zu Hause möchte ich einen neuen Heimserver einrichten. Vorwiegend sollen darauf Proxmox, Open Media Vault und Nextcloud laufen. Open Media Vault, so habe ich...
  10. Which VM CPU model to choose to have same CPU id string even after PVE upgrade?

    Hello, I used to run KVM VM with some licensed software in it (there is Debian and the software run in it). When the VM was setup the CPU was set to kvm64 and never changed. The software itself used to bind its license to hardware list of the PC (that is, VM), and the problem is, if I somehow...
  11. Auto IPV6 via dhcp ?

    Hello, Has anyone succeeded in offering auto IPV6 from a range via dhcp to vm's ? I`m looking more specifically for using the IPV6 range that OVH offers. Any information is appreciated.
  12. First PVE Cluster w/Ceph, Template Full Clone issue.

    What am I doing wrong? "qm clone 9000 100 --name dev-master1 --full 1 --storage vmrbd" only cloned the cloudinit Returns "create full clone of drive ide2 (vmrbd:vm-9000-cloudinit)" The Cloud init image is cloned, and exists in the rbd storage, but no image clone. Steps I used to create the...
  13. Additional CPU Flags for OPNSense

    I'm trying to figure out if it's possible to add the CPU flags sse4_1 and sse4_2 when your using the default kvm64 cpu type? OPNSense complains about the lack of SSE4_1 when I enable the AES flag. If I pick the host cpu type AES works correctly but for some reason OPNSense routing performance is...
  14. [SOLVED] Peculiar Behavior for ZFS-over-ISCSI on FreeNAS (VM creates but can't be started because LUN can't be reached?)

    All, I re-did a lot of the networking on my cluster and appear to have successfully changed everything over to ZFS-over-ISCSI using LACP and Linux bonded interfaces for some throughput improvement and redundancy. I am connecting to a FreeNAS cluster using GrandWazoo's ZFS-over-ISCSI patch...
  15. Proxmox or Xenserver Compare

    Hi Team, I have been using proxmox for about 3-4 years, very beautiful and very successful software. I want to make a comparison between proxmox and xenserver. Can you help with this ? It would be better to have this type of document in terms of Proxmox spread. Can we complete the shortcomings...
  16. VM disks gets corrupted on thin ZSF storage

    Hi, I have a server running latest PVE with a ZFS RAIDZ storage on SSDs. From time to time, some KVM VMs gets readonly filesystem and need to be rebooted and the filesystem repaired. Doesn't look like the problem is specific to a certain OS, because it happened on CentOS, Ubuntu, Debian... The...
  17. [SOLVED] Ubuntu Bionic image stucks on boot

    I have set up a KVM, configured its disk to use Ubuntu Bionic raw image http://cloud-images-archive.ubuntu.com/releases/bionic/release-20181206/ubuntu-18.04-server-cloudimg-amd64.img It always stucks on boot screen I found that If I adjust KVM option and directly run the adjusted KVM command...
  18. Mount hosts directory to KVM

    Not having "bind type" mount points from hots to VM has always been one of our main pullbacks from using KVM more extensively. I am trying to avoid NFS, sftp or SAMBA as an option and have just been reading about VirtFS - 9p virtio drivers (http://www.linux-kvm.org/page/9p_virtio) I've found...
  19. Cleanup image for template

    Hi, can you please provide instructions how to cleanup an image to be used as template? This wiki article documents some manual steps to be executed on the VM before converting to a template. Question: Is it sufficient to execute all steps documented here? This instruction is referenced in the...
  20. Can only use ISO file that is physically available in storage folder "ISO Image"

    Hi, in my network there's a NFS providing ISOs to multiple OS distributions. Instead of copying all ISO files to the storage I would prefer to use a softlink. Therefore I have mounted the NFS to /mnt/nfs/<server> and created a softlink in <storage>/template/iso. The content of...

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