Hello all,

background: One of my VM stopped working - on startup, I get the message "No bootable device" in the virtual machine.

I would like to inspect the corresponding image with libguestfs-tools.

However, I don't know how to pass the encryption key to the tool. For example:

virt-ls -a /opt/vm_witherror/machine1.qcow2 /
libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: create: flags = 0, handle = 0x5645c40d6b00, program = virt-ls
libguestfs: trace: add_drive "/opt/vm_witherror/machine1.qcow2" "readonly:true"
libguestfs: creating COW overlay to protect original drive content
libguestfs: trace: get_tmpdir
libguestfs: trace: get_tmpdir = "/tmp"
libguestfs: trace: disk_create "/tmp/libguestfsxECmri/overlay1.qcow2" "qcow2" -1 "backingfile:/opt/vm_witherror/machine1.qcow2"
libguestfs: command: run: qemu-img
libguestfs: command: run: \ create
libguestfs: command: run: \ -f qcow2
libguestfs: command: run: \ -o backing_file=/opt/vm_witherror/machine1.qcow2
libguestfs: command: run: \ /tmp/libguestfsxECmri/overlay1.qcow2
qemu-img: /tmp/libguestfsxECmri/overlay1.qcow2: Parameter 'encrypt.key-secret' is required for cipher
Could not open backing image.
libguestfs: error: qemu-img: /tmp/libguestfsxECmri/overlay1.qcow2: qemu-img exited with error status 1, see debug messages above
libguestfs: trace: disk_create = -1 (error)
libguestfs: trace: add_drive = -1 (error)
libguestfs: trace: close
libguestfs: closing guestfs handle 0x5645c40d6b00 (state 0)
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /tmp/libguestfsxECmri

Could you please provide an example on how to get such an encrypted disk mounted?

Thanks in advance

Kind regards

Dominik