1. O

    Unable to remove qcow2 from old template

    Please see attached image i am trying to remove it. I had a template but the 3 VM's i created i selected Full Clone to make them independent of the template But i cannot move it please can you tell me why or how i fix it? https://i.imgur.com/BtHRxDc.png qemu-img: Could not open...
  2. A

    Why VHDX showing massively larger once converted to QCOW2?

    I did a P to V for a windows machine that created a 175GB vhdx file and then when converting the vhdx file to qcow2 it now shows as 1TB, this makes no sense? The following command is what I used to convert the file: qemu-img convert -O qcow2 DELLM4400.vhdx DELLM4400.qcow2 -p
  3. H

    No boot baremetal windows to qcow2 converstion

    So Im trying to do the whole convert an existing baremetal windows installation to a KVM. I have been following this tutorial: https://pve.proxmox.com/wiki/Migration_of_servers_to_Proxmox_VE I just had to use different file locations because my PVE storage was too small for 240gb...
  4. E

    Urgent - VM deleted but config still here

    Hey every ! so here is my issue, I was doing some networking and had to shutdown my servers, but when I pluged back everything on (like always I have autorestart 1 day per week) But then.. my windows server wasn't booting up.. this is what I get : I think the VM image got deleted but I don't...
  5. F

    [SOLVED] Restoring .qcow2 file after Proxmox reinstallation

    I recently reinstalled Proxmox on my system, and prior to the reinstallation, I had an OMV (OpenMediaVault) virtual machine (VM) running on a 4TB HDD (with 1.5TB of total storage in use). However, after reinstalling Proxmox, I encountered an issue when attempting to mount the disk again using...
  6. V

    qcow2 sizing issue

    Hello all, I have a few questions regarding qcow2 images sizes because right now I am really confuzed... Let me describe a bit about a situation I deal with. I have 1.4 TB array with contains just one single VM with 3 separated qcow2 images: # ls -lah -rw-r----- 1 root root 17G jun 14 10:44...
  7. P

    qm importovf error

    I'm trying to import a Tenable .ova into Proxmox so I follow these steps. 1) Downloaded the .ova from - https://www.tenable.com/downloads/tenable-appliance?loginAttemted=true&loginAttempted=true#tenablecore-nessus 2) Used scp to transfer it to my Proxmox 3) Then I used tar xvf example to get my...
  8. H

    Unable to boot "Arch-Linux-x86_64-cloudimg.qcow2" with OVMF (UEFI) BIOS - Even with Secure Boot Disabled

    Proxmox Version: 7.4-3 I am trying to install Arch Linux via the official cloud image, which lists Proxmox as a tested provider: https://wiki.archlinux.org/title/Arch_Linux_on_a_VPS The page above details the Proxmox installation process in the table, with a link to the cloud image being...
  9. N

    [SOLVED] Can't convert a RAW disk to QCOW2 on local zfs storage

    Hello! For some reason, when I'm trying to convert a RAW disk, which is stored on zfs-local, to QCOW2, the format dropdown list is inactive. But if I try to move (Move Disc button) the disk to remote storage (SMB share), the dropdown is active. It seems like I've missed something during the...
  10. T

    Restoring QCow2 backup

    Hi Everybody, a few days ago my pair of USB drives running my hypervisor (lesson learnt SATA SSDs on their way) crashed and have been corrupted. I have been able to access the NVME drive that the VMs ran on. This drive is intact I think, I have been able to access the qcow2 files from it and...
  11. Y

    Can't use qcow2 as Format ?!

    i will have a Snapshot from a VM, in Proxmox Web GUI I read: The current guest configuration does not support taking new snapshots - OK, i found some infos for here at the forum. i will convert my proxmox VM HD to qcow2, but, it is greyed out
  12. B

    import qcow2 - error message non existent or non regular file

    Hi, I want to migrate form HyperV to Proxmox but keep my VMs. After some reading I found out that you can export the VMs from HyperV, convert them to qcow2 with Starwind V2V and continue to use the virtual hard disk in proxmox. After doing so I copied the filename.qcow2 file in the root...
  13. A

    How Can I Move An Amazon AMI Image To Proxmox?

    I have some VMs on AWS that are running some very old applications that I'd like to move to Proxmox. I don't have a good way to reinstall/recreate the apps running on those VMs. We're talking code that's like 15 years old and the developers are long gone and I have no one that supports these...
  14. E

    vm uses qcow2 from unexisting storage

    Thats a storages i got pvesm status Name Type Status Total Used Available % NFS nfs active 1740348416 1443283968 208589824 82.93% NFS2 nfs active 1740348416 1617566720 34307072...
  15. A

    RAW disks -> qcow2 | LVM disks

    Hi there, I have just finished setting up my second homelab host and come to the horrible realisation that my 2 x 2TB and 4TB disks are all LVM and have running VM's on. I tried to take a snapshot, only to realise that I cannot make a snapshot due to it being LVM on the disks. I would like to...
  16. H

    [SOLVED] QEMU fail to boot Virtual Machine failed : Could not read from CD ROM

    Using libvirt, I am creating VM on Proxmox with Scaleway. I have an ansible file that create a VM name CentOS_Base, the most important commands are: # Downloading a CentOS-7-x86_64-GenericCloud-1809.qcow2 curl https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1809.qcow2 #...
  17. T

    qcow2 snapshot creation takes too long

    We have a Proxmox 6.1-5 Server running with a VM which has 3 harddisks configured. The virtual disks are all qcow2 files hosted on the local filesystem. The VM performance is ok even under heavy load. My problem is, that it takes ages to create a snapshot of this VM even if theVM is powered...
  18. K

    [SOLVED] QCOW2 using BTRFS file system, is good to use, without loss of performance?

    Hi, i would like to use QCOW2 image to my VMs, i am using BTRFS file system in PVE 7, but i found this https://forum.proxmox.com/threads/no-qcow2-on-zfs.37518/ post and there is a good question. Can I use it without loss of performance?
  19. A

    Migration von vmWare auf PVE

    Moin, aktuell habe ich das Vergnügen vmWare Maschinen auf PVE zu migrieren. Alles in Allem funktioniert das auch, die Hardware wird "umgebaut" und die Treiber greifen auch. Mir stellt sich nur eine Frage: Meine lieben externen Kollegen (ein Systemhaus in NL) hat überhaupt keine Lust, mir die...
  20. B

    How to adjust the qcow2 cluster size of existing images to drastically improve I/O performance?

    Hi I've just read this interesting blog article on jrs-s.net (he have a lot of great articles on ZFS by the way) on the topic of qcow2 vs zvol I/O performance. The interesting part was that fine-tuning the qcow2 cluster_size to match the record size ot the underlying zfs dataset could...


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