qcow2

  1. T

    qcow2 + snapshots over NFS

    I'm using shared storage backed by NFS with VMs using qcow2 and I'm hitting wall trying to track the size of a given snapshot. Using qemu-img I can see the snapshot but the VM_SIZE all show as 0B. I can definitely see the size of the disk growing from my tests ( writing mutliple 1GB files from...
  2. R

    General Questions about bugzilla / feature requests

    Hello there people, I have a general Question about a feature request specifically this one: Bug 4693 - [Feature Request] - PVE - TPM State Disk as qcow2 This is a feature I and many others are very much looking forward to, and I have seen on the lore site that Fiona Ebner has already done some...
  3. bbgeek17

    [TUTORIAL] Understanding QCOW2 Risks with QEMU cache=none in Proxmox

    Hey everyone, A few recent developments prompted us to examine QCOW2’s behavior and reliability characteristics more closely: 1. Community feedback There are various community discussions questioning the reliability of QCOW2. We have customers (predating our native integration) interested in...
  4. R

    QCOW2 disks on LVM do not report size for powered-off VMs.

    Hello All, For powered-off VMs, we cannot view or query the size of QCOW2 disks on LVM storage — unless the VMs are powered on or activated via SSH. Is this a bug?
  5. J

    qcow2 Dateigröße viel größer als eigentlich eingestellt

    Hallo, ich habe das seltsame Phänomen, dass eine qcow2 Datei auf dem Hostsystem viel Größer ist, als sie eigentlich sein dürfte...; nämlich fast doppelt so groß Host: #> ls -lah -rw-r----- 1 root root 4,1T 24. Aug 22:36 vm-102-disk-0.qcow2 vm: #> df -h Dateisystem Größe Benutzt Verf...
  6. M

    Problem Booting Migrated SCO OpenServer 6 VM: “vfs_mountroot: cannot mount root”

    Hi everyone, we’re currently facing an issue after migrating a legacy SCO OpenServer 6 virtual machine from VMware to Proxmox. Here's what we’ve done so far: Successfully converted the original .vmdk file to .qcow2 using qemu-img. Created a new VM in Proxmox and attached the converted .qcow2...
  7. M

    Struggling to get qcow2 option

    Hello everyone I have looked online but cant seem to find any where to get the option for qcow2. i can't change the format on my vm's when selecting the format option on the disks page on creating a vm. I have read online (maybe totally wrong) that i need to change my disk to File based...
  8. M

    Information requst re: ESXi 7.x import to PVE 8.3.3

    I am one of the (possible) flood of former ESXi users, who will not doubt be asking questions here during their migration attempts. I have my PVE setup, zfs, working zpools and most of my virtual machines imported from ESXi, I have one VM that is particularly large, and it is on its way to my...
  9. P

    proxmox-vm:4.1,how can i import qcow2 file that copy from B machine into A machine.

    proxmox-vm's version is 4.1.The proxmox service in B machine that is bad.I copy vm's qcow2 file from B machine.How can i import qcow2 file into A machine. The pm importdisk command can execute on proxmox-vm 8.3 or 7.0. what's command of proxmox-vm 4.1?
  10. I

    Proxmox defaults, set it and forget it

    Dear all, I'd like to set some defaults within PVE, but neither the manual nor the forum provided info on this: I want to have all VMs hard drives, created or reassigned, to be configured with "cache=directsync" When creating a VM, adding a HDD or detaching a disk and running "reassign...
  11. A

    Corrupted qcow2 images

    We use Proxmox Backup Server and Client v3.3.1 to backup our KVM guests. These use qcow2 for the disks with ext4 as file system. To ensure that the backed up images are valid, the backed up disks are mounted via proxmox-backup-client map after uploading to the Proxmox Backup Server and checked...
  12. L

    GlusterFS on single server

    Hello everyone! I'm setting up GlusterFS in my Proxmox labs, aiming to have shared storage from a single node (the disks are all in one server running GlusterFS server), while the other nodes connect to this server to use its storage. The basic GlusterFS configuration was successful: the other...
  13. J

    SOCORRO. Soy nuevo en promox y necesito super urgente agregar unos fichero de discos qcow2 a una maquina virtual

    Hola y gracias de antemano, tengo un proxmox con informacion y esta tiene una maquina virutal de windows que se ha ido a tomar viento fresco, que no me funciona, esta maquina tiene 3 discos de formato qcow2, uno con el sistema y otros 2 con datos, como el promox me esta haciendo cosas raras y es...
  14. S

    [SOLVED] The current guest configuration does not support taking new snapshots.

    Hi! I am new to PVE, and I am facing a problem that I don't know how to solve, I hope to get some help, thanks! I have created a VM with the system ubuntu-server and I would like to create an initial snapshot before proceeding to the next step. But when I try to create it I encounter this error...
  15. A

    Instantiate VM from qcow2 image

    Hi All I have a qcow2 image of Redhat VM. My understanding from the storage guide is that only directory backend that supports qcow2 image. My question is if I have imported a qcow2 image on the directory backend, can I instantiate a VM on some other storage type, like LVM ? I want to use...
  16. A

    last missing enterprise feature (on shared block storage / SAN)

    Hi, I know that there is already "LVM over iSCSI/FC" for shared block storage (SAN) which carves out LV from a shared VG/LUN for individual VM disks - but with no snapshot and thin provisioning support my question is why is there no (extended) storage plugin which provides 1.) "QCOW2 over/on...
  17. H

    qcow2 convert error

    I didn't know in which forum I could've asked, so my apologize for my asking here. Converting a qcow2 image to qcow2 image won't been done properly. Error while comparing with base disk: "Content mismatch". Using -c flag (compressing) will fix this issue. Why is that? actually using the above...
  18. N

    [SOLVED] Shared SAN inkl. Snapshots Unterstützung

    Hallo zusammen, gibt es aktuell Pläne einer Verwirklichung von SAN (iSCSI / SCSI) Support mit Snapshot Funktion bzw. den offiziellen Support eines shared Filesystems um qcow2 verwenden zu können? Falls nicht, gibt es eine Empfehlung welches shared Filesystem hier evtl. gut und sicher in einer...
  19. Y

    Enable Storage to store qcow2

    I created a ZFS RAIDZ storage. What must I do to make this storage support qcow2?
  20. J

    Deleting snapshots from qcow2

    I'm currently writing a script I can invoke from the command line to delete old snapshots in a qcow2 file. I often have more than 10 old snapshots. If I have an arbitrary qcow2 for a VM with arbitrary snapshots going back some months, is there a difference between deleting snapshots from...