Host Storage Filled Up but its not :(

[celtic3296]

Hello Experts,

My Proxmox host has a 2 TB disk that reports 85% utilization, but the total data within my VMs adds up to much less. After reviewing each VM’s storage usage, I’m missing over 500 GB of space. From my research, I understand that enabling the “Discard” feature during VM creation allows storage to be properly reclaimed when VMs are deleted. Since I have created and deleted numerous VMs without “Discard” enabled, I suspect this has led to the discrepancy. I currently see several VM disks and CT volumes in the system and need guidance on how to recover the 500+ GB of lost storage.

 

[Onslow]

Maybe try

qm disk rescan [OPTIONS]

Rescan all storages and update disk sizes and unused disk images.

--dryrun <boolean> (default = 0)
    Do not actually write changes out to VM config(s).

--vmid <integer> (100 - 999999999)
    The (unique) ID of the VM.

https://pve.proxmox.com/pve-docs/pv...ng_qm_strong_qemu_kvm_virtual_machine_manager

 

[bl1mp]

Hi celtic3296,

you habe choosen storage type directory and selected the raw format as disk type for some VMs.
That should be thick provisioned, and the storage space will be claimed no matter, how much space is utilized within the vm. If you use qcow2, the storage will be thin provisioned.

BG, Lucas

 

[Impact]

Please check this: https://gist.github.com/Impact123/3dbd7e0ddaf47c5539708a9cbcaab9e3#discard
And this: https://gist.github.com/Impact123/3dbd7e0ddaf47c5539708a9cbcaab9e3#why-not-use-local-for-guest-disks
And

apt install gdu
gdu /