I know there have been other threads about this subject, but I do not manage / understand any how .. Assume the particular VM is situated in dataset 'test_vm' If you create a snapshot of a VM or any other zvol, that snapshot does refer to a delta not the whole zvol. And I want to make a copy...

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  • Step-1 # log is as root via a ssh-console

  • Step-2 # Note down / take a screenshot of the.zvol used by.the.vm (computer symbol)

      hoover above the name

  • Step-3 # List the. zvols available in the dataset

root@lion[/1# cd /dev/Cheetah/Virtual-Machines/xvz

root@lion[…/Cheetah/Virtual-Machines/xyz]# Is

xyz-rfg1ef xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz

  • Step-4 # Create, a snapshot of the dataset used by, the.vm (select the, name found above)

root@lion[./Cheetah/Virtual-Machines/xyz]# zfs snapshot Cheetah/Virtual-Machines/xyz/xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz@backup20230424a

  • Step-5: # Create.a copy based on the snapshot in the choosen destination dataset

root@lion[…/Cheetah/Virtual-Machines/xyz]# zfs send-v Cheetah/Virtual-Machines/xvz/xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz@backup20230424a I zfs receive -ev Olifant/BackUp-VMs/xvz

  • Step-6 # Have a look at the result

root@lion[…/Cheetah/Virtual-Machines/xyz]# zfs list I grep xyz

Cheetah/Virtual-Machines/xvz 130G 1.35T96K /mnt/Cheetah/Virtual-Machines/xyz Cheetah/Virtual-Machines/xyz/xyz-rfg1ef 106G 1.45T4.37G Cheetah/Virtual-Machines/xvz/xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz 23.5G 1.35T 25.5G 25.5G 9.04T96K /mnt/Olifant/BackUp-VMs/xyz Olifant/BackUp-VMs/xyz Olifant/BackUp-VMs/xyz/xyz_backup20230424a 25.5G9.04T25.5G

  • Step-7 # Give the zvol a decent name

zfs rename Olifant/BackUp-VMs/xvz/xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz Olifant/BackUp-VMs/xvz/xyz_backup20230424a

  • Step-8 # Check the result.

cd /dev/Olifant/BackUp-VMs/xyz root@lion[/dev/Olifant/BackUp-VMs/xvz]# Is xyz_backup20230424a

  • Step-9 # Delete the, snapshot

zfs.destroy Cheetah/Virtual-Machines/xyz/xyz-rfg1ef_xyz_01_xyz_xyz20230328b_xyz@backup20230424a