Proxmox hard disk space shown as full

p10tr

New Member
Oct 9, 2025
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Running a fresh install of Proxmox using two SSDs in BTRFS Raid1 configuration of 2TB size shown as 1.8TB.
I run one guest linux VM on top of it taking 1.5TB.

The quest VM OS shows it currently takes 833GB of 1.5TB, 53% used.
The size of local-btrfs is as follows:

du -sh /var/lib/pve/*
862G /var/lib/pve/local-btrfs

The summary shows that the Proxmox disk space is almost completely full, see the attached image.

Can someone please enlighten me why the complete disk space is shown as almost full? It seems 300GB of the RAID1 unused by VM is shown as full and I'm not sure why.
 

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