questions about supported file systems

[jmccormick2001]

Hi, I trying to import a vmware image into openshift virtualization, using a StorageClass for our CSI driver, this is NFS v3. I'm seeing this error when the plan tries to convert the downloaded vmware image to kvm format ('convert image to kubevirt'):

15.597615] EXT4-fs (sda3): couldn't mount RDWR because of unsupported optional features (10000)^M
command: mount returned 32^M
command: mount: stderr:^M
mount: /sysroot: wrong fs type, bad option, bad superblock on /dev/sda3, missing codepage or helper program, or other error.^M
ocaml_exn: 'mount' raised 'Failure' exception^M
guestfsd: error: mount exited with status 32: mount: /sysroot: wrong fs type, bad option, bad superblock on /dev/sda3, missing codepage or helper program, or other error.^M

Any ideas on the error?

[jmccormick2001]

ok, so the issue here was that the vm I was trying to import was an Alpine image that I guess uses a version of ext4 that is not supported on the image conversion. Changing to a Rocky VM and the image conversion worked.