@dthenot said in LargeBlockSR for 4KiB blocksize disks: Hello again, It is now available in 8.2.1 with the testing packages, you can install them by enabling the testing repository and updating. Available in sm 2.30.8-10.2. yum update --enablerepo=xcp-ng-testing sm xapi-core xapi-xe xapi-doc You then need to restart the toolstack. Afterwards, you can create SR with the command in the above post. Update: now the driver is available on any up to date XCP-ng 8.2.1 or 8.3. No need to try to update from testing repositories (you might get something unexpected).