+++ This bug was initially created as a clone of Bug #1991460 +++

Description of problem:
The creation of a virtual machine fails while setting it up with an error message like 

~~~
"component":"virt-handler","kind":"","level":"error","msg":"Synchronizing the VirtualMachineInstance failed.","name":"rhel8-unwilling-hamster","namespace":"openshift-cnv","pos":"vm.go:1538","reason":"server error. command SyncVMI failed: \"LibvirtError(Code=1, Domain=10, Message='internal error: qemu unexpectedly closed the monitor: 2021-07-15T21:00:48.315305Z qemu-kvm: -device virtio-blk-pci-non-transitional,bus=pci.5,addr=0x0,drive=libvirt-1-format,id=ua-cloudinitdisk,write-cache=on: Cannot get 'write' permission without 'resize': Image size is not a multiple of request alignment')
~~~

If cloud-init is disabled for the virtual machines it works. The customer is using block-storage with a blocksize of 4k.

This bug is related to: https://bugzilla.redhat.com/show_bug.cgi?id=1976730.

As discussed in the case I open this bug-report.

If cloud-init is disabled the provisioning of the vm works.


How reproducible:
In every cluster using block-storage with 4k block size.

Steps to Reproduce:
1. Install OCP cluster
2. Set up storage provider with 4k block-size
3. deploy virtual machine with cloud-init enabled

Actual results:
* Provisioning of the virtual machine fails

Expected results:
* Provisioning succeeds

Additional info:

--- Additional comment from Kobig on 2021-08-16 09:10:30 UTC ---

Hi, 

Do we know to which version the fix for this bug is aimed for? and if its not for 4.7 can we please backport it? 

Thank you