Hi Igor, When creating a virtual disk, in 4.5 (oVirt & OLVM), the "New Virtual Disk" dialog brings the "Enable Incremental Backup" automatically checked. The "Shareable" and "Enable Incremental Backup" options can not be set simultaneously. To create a shareable virtual disk, click the "Shareable" option and unclick the "Enable Incremental Backup" option. Marcos -----Original Message----- From: Igor Filipovic via Users <users(a)ovirt.org&gt; Sent: Sunday, March 31, 2024 3:08 PM To: users(a)ovirt.org Subject: [External] : [ovirt-users] Can't create shared disk after upgrade to 4.5.4 Hi, In my lab I'm using OLVM ( I know ... it's not original oVirt but it is based on it ). I was using 4.4.10, and after upgrade to 4.5.4 I'm no longer able to create shared disks, on any storage domain (nfs or fc). When I was on previous release I was able to create and use shared disks (required for cluster systems), but after upgrade when I try to create shared disk (preallocated) I'm getting an error saying : Error while executing action: Cannot add Virtual Disk. Disk's volume format is not supported for shareable disk. In engine log I can see only this : 2024-03-31 20:04:28,997+02 WARN [org.ovirt.engine.core.bll.storage.disk.AddDiskCommand] (default task-37) [b8bc1831-260a-4253-b6fe-e0c81a6f81b6] Validation of action 'AddDisk' failed for user admin@internal-authz. Reasons: VAR__ACTION__ADD,VAR__TYPE__DISK,SHAREABLE_DISK_IS_NOT_SUPPORTED_BY_VOLUME_FORMAT Does anyone have idea what could be the reason or how to solve this? Thanks in advance and best regards Igor _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://urldefense.com/v3/__https://www.ovirt.org/privacy-policy.html__;!... oVirt Code of Conduct: https://urldefense.com/v3/__https://www.ovirt.org/community/about/communi... List Archives: https://urldefense.com/v3/__https://lists.ovirt.org/archives/list/users@o...