avtubon Posted October 30, 2025 Posted October 30, 2025 When trying to back up a VM that resides on LVM with snapshot-as-volume-chain enabled, an error occurs. The error message shown on Nakivo is "Source host could not create temporary overlay file required to backup the VM Reason: Proxmox overlay file creation failure. The VM is on LVM with option "Snapshots as Volume-Chain are a technology preview." checked Environment : Proxmox VE 9.0 , Nakivo 11.1 Quote
The Official Moderator Posted October 30, 2025 Posted October 30, 2025 16 hours ago, avtubon said: When trying to back up a VM that resides on LVM with snapshot-as-volume-chain enabled, an error occurs. The error message shown on Nakivo is "Source host could not create temporary overlay file required to backup the VM Reason: Proxmox overlay file creation failure. The VM is on LVM with option "Snapshots as Volume-Chain are a technology preview." checked Environment : Proxmox VE 9.0 , Nakivo 11.1 Currently, NAKIVO support the following: Proxmox VE v8.3-1 - v8.4-1 For more details, you can refer to this article: https://helpcenter.nakivo.com/User-Guide/Content/Deployment/System-Requirements/Supported-Platforms.htm In case you have already updated to Proxmox VE 9.0, the VM machine type must be changed to 9.2 or lower version for backup and recovery to work. For more information, please take a look at this link: https://helpcenter.nakivo.com/User-Guide/Content/Deployment/System-Requirements/Supported-Platforms.htm#Proxmox Quote
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