Migration from vmware 7.03 to proxmox-a pve-manager/9.0.10 - qemu-img: output file is smaller than input file

on82

New Member
Jan 16, 2026
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Hi all

When importing machines using the GUI, all 100GB machines migrate without a problem, but if I have a machine with one 120GB drive and one 200GB drive, I get this message. Is this because my local drive is 343GB? My entire storage where I store the machines is 180TB. Or is this caused by something else?

What can I do to migrate such large machines?

Does anyone know what the problem might be?

create full clone of drive (ESX1:ha-datacenter/NAS/MyVM/MyVM.vmdk)
transferred 0.0 B of 1.0 KiB (0.00%)
qemu-img: output file is smaller than input file
Removing image: 100% complete...done.
TASK ERROR: unable to create VM 158 - cannot import from 'ESX1:ha-datacenter/NAS/MyVM/MyVM.vmdk' - copy failed: command '/usr/bin/qemu-img convert -p -n -f vmdk -O raw /run/pve/import/esxi/ESX1/mnt/ha-datacenter/NAS/MyVM/MyVM.vmdk 'zeroinit:rbd:vms.nvme/vm-158-disk-0:conf=/etc/pve/ceph.conf:id=admin:keyring=/etc/pve/priv/ceph/vms.nvme.keyring'' failed: exit code 1