Thinpool usage VS actual disk usage inside VM

tchjntr

New Member
Oct 1, 2024
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0
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Hi there, I'm new to the Proxmox forums.

First of all, thanks for developing Proxmox and let us experiment with this incredible piece of software. I am still in the "trial and error" phase but I am enjoying every second of it. I have searched the forums but maybe I was not using the correct keywords so I am posting this new thread.

I have a Debian 12 VM set up with two disks:

Disk 1: 32GB for the root filesystem created in "local-lvm" storage (LVM-Thin) on the OS drive which is a 2TB WD SA500 M.2 SATA SSD.
Disk 2: 2TB for the /home partition created in "timechain" storage (LVM-Thin) on a second drive which is a 2TB WD SA500 2.5" SATA SSD.

Both disks have SSD Emulation and Discard enabled.

I have noticed that there is a substantial discrepancy between the usage reported in the "timechain" thinpool and the actual usage of the /home folder in the VM.

If I run df -h inside the VM, I get this:

Code:
/dev/sda1        32G  2.5G   28G   9% /
/dev/sdb1       1.8T  633G  1.1T  37% /home

In the Proxmox web UI instead, I see that the usage for the "local-lvm" thinpool is 3.49GB (screenshot below for reference).

Screenshot 2024-10-01 at 21.52.22.png

And the usage for the "timechain" thinpool is almost 720GB (screenshot below for reference).

Screenshot 2024-10-01 at 21.47.14.png

There is most probably something I have misconfigured but I can't figure out what it is. I appreciate any input.
 

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