qcow2

  1. Restore backup 50Tb

    Hello gentlemen, we have such a problem. Proxmox VE 5-4-5 It turned out that when the size of the hard disk was changed by one of the VMs, they made a mistake or a glitch happened and it turned out they made 50TB for the 50GB place. Proxmox successfully made a backup of this virtual machine, but...
  2. Recommendations for Proxmox local Filesystems (2 standalone nodes maybe moving to cluster later)?

    Hi All, Proxmox seems to offer a multitude of options for filesystems on the local disk(s). I started off by installing the default options on my 1 Node standalone server and noticed it configured the local 500GB SSD as follows: local - Directory - 94GB: /dev/mapper/pve-root (according to "df...
  3. Blue screen after .ova import

    Hi all, So, I exported a Windows 10 VM to an .ova file from VirtualBox and extracted it on Proxmox VE. Then I made a VM with the same specs as the previous VM. I converted from .vmdk to .qcow2 and replaced the disk in the VM with the one from the .ova. But everytime I try to start a Windows 10...
  4. Basic IO benchmarks between zfs/lvm-thin/qcow2

    Just ran these the other week, thought I'd share. I'll try to do some more proper ones on Linux, but before that happens here's some CrystalDiskMark ones on Windows 2019 (virtio-scsi). The underlying storage is a single Samsung 850 PRO SSD. I was pleasantly surprised by the QCOW2 performance...
  5. [SOLVED] Migrated KVM Virtual Disk fails to boot with UEFI

    Hello! I have migrated / copied over a virtual disk (qcow2) created with Virsh. This disk has 2 partitions and uses UEFI. When I start a VM in Proxmox using this virtual disk, the SeaBIOS is loaded and fails to boot UEFI. How can I fix this? THX
  6. Storage live migration and thin provisioning

    Hi, the storage live migration creates a thick provisioned target even if a format like qcow2 is selected. I only found the announcement for PVE 3.0 where someone mentioned to use qemu-img convert afterwards to create a sparse image file. But how would this be done on a running VM?
  7. iSCSI format qcow2

    Hi. I want to make a VM with format qcow2 in a iSCSI target. I found in tutorials that is possible make a file system to the iscsi device,and the select qcow2 (to make snapshot possible) when creating the VM. But, i dont find how do this... how make a qcow2 format to a VM in a iSCSI target with...
  8. Proxmox Windows VM which is the best hard disk setting?

    Hello, I would like to install windows server 2016 on proxmox. my server have two ssds. i use qcow2 but wich is the best ide, sata or virtio and discard enable or disable? i have no lvm storage. can you give me a quick answer? thanks!
  9. qcow2: Image is corrupt; cannot be opened read/write

    Hi my vm is broken, qm start 100 gives: qcow2: Image is corrupt; cannot be opened read/write kvm: -drive file=/var/lib/vz/images/100/vm-100-disk-1.qcow2,if=none,id=drive-scsi0,format=qcow2,cache=none,aio=native,detect-zeroes=on: qcow2: Image is corrupt; cannot be opened read/write start...
  10. [SOLVED] Migrate VM from local HDD to SAN storage ?

    Hi all, I'm wondering if it is possible to move/transfert a VM disk from local HDD to a SAN LVM over ISCSI storage without reinstalling VM from scratch.. I'm aware that in the first place i will need to convert my disk image from qcow2 to raw before attempting to import it in SAN storage. Is...
  11. Defekte QCow2-Platten

    Sehr geehrte Damen und Herren, wir haben einen Proxmox-Cluster aus 13 Maschinen aufgebaut, davon sind 9 Maschinen kleine Shuttle-PC vom Typ DH110, Geräte die für den Dauerbetrieb zertifiziert sind und die im Einzeltest unter Proxmox 4.x ein Jahr störungsfrei gelaufen sind. 2 Maschinen sind...
  12. De-allocation problem on host disk space using VMs with qcow2/vmdk disk formats

    If a VM is build using qcow2 or vmdk HDD format with size say 1TB and fill it up completely, it uses 1TB of Proxmox server disk space, but when you delete files from VM, it does not de-allocate HDD space and still 1TB of disk is used on Proxmox disks. I faced this problem on 4.0 and 4.2 PVE...
  13. Hyperv migration to Proxmox

    Good day! Today i try to migrate hyperv VM with Windows 10. I have copied VM in vhdx format on Proxmox server, then i used: qemu-img convert -O qcow2 Windows10.vhdx /var/lib/vz/images/Windows10.qcow2 I have *.qcow2 image at output. Then i've tryied to connect disk to new installed VM, but i...
  14. Trim virtual drives

    Hey everyone ! We were moving disks from a storage to another and noticed that when they arrive on the new storage, the thin provisioning expanded to full space. Before, when we had a few VMs, we could use the old method to empty the disks (using dd to fill the disk with zeros and deleting...
  15. Import KVM qcow2 snapshots into Proxmox

    Hi all, Preamble: Proxmox VE 4.4 Storage type Directory VM disk images type qcow2 imported from KVM+virt-manager Role Administrator + root in the OS To make long story short, my aim is to import/convert qcow2 images with some snapshots embedded into Proxmox VM Snapshots view. I've searched...
  16. Create VM from existing qcow2 image ?

    I have qcow2 image below and want to create VM using this image ..How do I do this from GUI ? If not then from CLI. I tried to google it but hasn't found straight answer yet , same on Proxmox support pages root@pve:/var/lib/vz/template/iso# ls -l /var/lib/vz/images/ total 1940868 -rw-r--r-- 1...
  17. Cannot select qcow harddisk format on PVE4.4

    I just installed a fresh PVE 4.4 with local-lvm and ceph rbd storage. Now when creating a new VM I'm unable to select 'qcow2' format or any other except 'raw' for unknown reason. It does not matter if I try to use ceph-rbd or local-lvm the 'Format' GUI field is always grayed out. I know that...
  18. qcow2 corruption after snapshot or heavy disk I/O

    Hi, we were just facing this really odd trouble here, and wondered if anyone was experiencing the same or has any answers: - Virtual Environment 4.4-12/e71b7a74 on supermicro server hardware with LSI RAID Adapter. RAID1 with two 3 TB disks, no errors in Raid, no Errors in (ECC) RAM -...
  19. Deploy qcow2 template

    Hello, I have installed proxmox today for the first time and I am encountered a problem. I need to deploy a .qocw2 image to my proxmox (it's a firewall template). Unfortunately, when I create a VM, I choose OtherOS as OS then I can't choose qcow2 file to boot on. only iso(CD/DVD TAB). Am I...
  20. Where to place qcow2 converted disk in Prox 4.3

    This is a fresh install of Prox 4.3. Converted .vmdk to qcow2 root@proxie:~# qemu-img convert -f vmdk image-wmps-fireeyenx1500v-disk1.vmdk -O qcow2 image-wmps-fireeyenx1500v-disk1.qcow2 However, any instructions I can find say to copy create a VM (say 104) and and copy the qcow2 image to...

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