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Hi Team, We would like to clarify the correct steps for activating Proxmox Mail Gateway (PMG) subscriptions in an offline / air-gapped environment using Proxmox Offline Mirror (POM). We understand that the general workflow is: On a machine with internet access (“mirror / key-management”...

We are currently having an issue where we provisioned 1x Storage LUN via FC to 4x Servers.We mounted the server on 1 of the server as LVM and we realize we are not able to perform snapshot.Understanding from https://pve.proxmox.com/wiki/Storage that LVM are able to perform snapshot with...

Hi, When you back up a VM in Proxmox, it only saves the data that’s actually used, not the empty space. The backup is also compressed, so the file size is usually smaller than the VM’s disk size. For example, if each VM is 200 GB but only 100 GB is used, the backup might be around 60–100 GB...

Since you don’t need the PCI device for the backup, you can temporarily disable it in the VM config: # Edit VM 192 config nano /etc/pve/qemu-server/192.conf Comment out the PCI line(s): #hostpci0: 0000:01:00.0 Then run your backup again. After the backup finishes, re-enable the line.

Hi, This can happen if the snapshot slows down disk I/O. Check logs with: journalctl -xe and cat /var/log/syslog If your disk is qcow2, try changing it to raw. Also Restarting the VM helps because it resets the I/O state.

Hi, Thank you for sharing the information and detailed steps — that’s really helpful! However, my main concern is on the Proxmox side, specifically regarding whether the new Microsoft Secure Boot certificate (referenced in Microsoft’s update notice) will be included in the Proxmox EFI Disk...

Hi, The error usually means there’s an invalid character or format in the PBS address you entered. Please check that the URL is correct — for example, use: https://pbs-server.domain.com:8007 Make sure there are no spaces or special characters like @ in the address.

Hi, Changing a VMID directly isn’t supported in Proxmox. The recommended way is to back up the VM and restore it using the new VMID. This ensures everything stays consistent and avoids storage issues,

Hi, We are looking for a PVE cluster resource load balancing function similar to VMware DRS automation. Does the PVE cluster have a similar function for automated resource load balancing? Thank you

Hi, We have reviewed the host and VM time settings: Both the Proxmox host and the VM are now using Asia/Singapore timezone. NTP is active and synchronized on both systems. The previous 2-hour difference is resolved. The current VM time is only a few minutes ahead of the host, amy I know which...

Hi, The error means your Proxmox server can’t reach the backup server on the special backup port (8007), even though the web page works. You can try: • Restarting the backup server • Checking if any firewall is blocking the connection • Making sure the backup service is running Usually...

Hi, In Proxmox, the backup setting works for the whole virtual machine, not for each disk separately. So, it’s not possible to back up one disk every 10 minutes and another disk only once a day from the same VM. The only way to do this is to create two VMs, each with one disk, and set...

Hi, I’m encountering a time synchronization issue between one of our Proxmox VE hosts and its virtual machine. Environment: Proxmox VE Host: PVE-SGTNAPAPP02 Virtual Machine: SGTNAPAPP02.tina.gebgd.org Date Observed: 10 October 2025 Issue Details: There is a 2-hour clock...

Hi , We are currently preparing our Windows Server VMs for Microsoft's Secure Boot certificate updates. According to Microsoft’s announcement (ref: https://support.microsoft.com/en-us/topic/windows-secure-boot-certificate-expiration-and-ca-updates-7ff40d33-95dc-4c3c-8725-a9b95457578e), the...

Hello, I have a VM (ID 125) running WHM/cPanel. When creating it, I accidentally placed the disk on my NAS Backup storage instead of local storage (local_btrfs). Symptoms / Issues: The VM sometimes shuts down automatically after starting. Inside the VM, dmesg shows repeated I/O errors on...

Hi, You don’t need Proxmox Backup Server for this. Just copy your backup file to the new server into the backup folder (usually /var/lib/vz/dump/). After that, it will show up in the Backups list in Proxmox and you can restore it from there. There isn’t an “Upload” button on the backup page —...

Hi, Could anyone please advise how to check if the disk has any issues and how to find its logs? I was trying to move the disk from NAS-BACKUP to local-btrfs, but encountered the error I shared earlier. Thank you.

Currently the disc seems not corrupted and all working fine, but we required to move the disc from one to another and it is urgent. Could you please advise a safe method.

Hi Support Team, We’re facing an issue while migrating a VM disk. The migration starts but fails part way with an I/O read error from the source NAS storage. Here’s the error: moving disk with snapshots, snapshots will not be moved! create full clone of drive scsi0...

Hi, You can’t directly add more CPU or RAM to a running node without a restart, since the hardware needs to be recognized by the system. To avoid downtime for your workloads, you can use Proxmox features like live migration: move the VMs/containers to other nodes in the cluster, then shut down...