ZFS proxmox directory pool and export vm raw

Find directory ZFS on proxmox (example copy vm, etc) 

1. check directory

    - cd /dev/zvol/namezfspool

2. export raw

    - dd if=/dev/zvol/<pool>/<volume> of=/var/lib/vz/images/file.raw bs=1m
    - qemu-img convert -f raw -O qcow2 file.raw file.qcow2