Windows VM "Disk Full" despite plenty of space shown in Explorer - Proxmox/ZFS issue?

Raid007

Member
Feb 15, 2024
14
1
8
Hi Proxmox community,

Problem: Windows VM (ID 133) stops working, reports C: drive full (but no red bar in Explorer), writes freeze - BUT Explorer and chkdsk shows a lot of free space.

On ZFS Host there seems to be a lot of space left:

Code:
root@pve1:~# zfs list -o space
NAME                              AVAIL   USED  USEDSNAP  USEDDS  USEDREFRESERV  USEDCHILD
ZFS_VM_POOL                       3.74T  3.12T        0B     96K             0B      3.12T
ZFS_VM_POOL/VMPOOL                3.74T  3.11T        0B    192K             0B      3.11T
ZFS_VM_POOL/VMPOOL/vm-110-disk-0  3.78T  66.0G        0B   32.3G          33.7G         0B
ZFS_VM_POOL/VMPOOL/vm-110-disk-1  3.83T   107G        0B   23.1G          83.5G         0B
ZFS_VM_POOL/VMPOOL/vm-110-disk-2  3.74T     3M        0B    276K          2.73M         0B
ZFS_VM_POOL/VMPOOL/vm-111-disk-0  3.99T   310G        0B   56.8G           253G         0B
ZFS_VM_POOL/VMPOOL/vm-111-disk-1  3.94T   208G        0B   11.9G           196G         0B
ZFS_VM_POOL/VMPOOL/vm-111-disk-2  3.74T     3M        0B    276K          2.73M         0B
ZFS_VM_POOL/VMPOOL/vm-113-disk-1  3.97T   508G        0B    275G           233G         0B
ZFS_VM_POOL/VMPOOL/vm-114-disk-0  3.86T   152G        0B   31.2G           121G         0B
ZFS_VM_POOL/VMPOOL/vm-115-disk-0  3.74T     3M        0B    260K          2.75M         0B
ZFS_VM_POOL/VMPOOL/vm-115-disk-1  3.79T   102G        0B   56.9G          44.6G         0B
ZFS_VM_POOL/VMPOOL/vm-115-disk-2  3.74T     6M        0B     96K          5.91M         0B
ZFS_VM_POOL/VMPOOL/vm-115-disk-3  3.87T   406G        0B    273G           134G         0B
ZFS_VM_POOL/VMPOOL/vm-115-disk-4  3.81T   254G        0B    189G          64.4G         0B
ZFS_VM_POOL/VMPOOL/vm-123-disk-0  4.03T   569G        0B    274G           294G         0B
ZFS_VM_POOL/VMPOOL/vm-133-disk-0  3.97T   508G        0B    274G           234G         0B

VM-133 disk: 508G used (274G actual + 234G reservation) - Pool has 3.74 TB storage left?
Do you see any problem here?

Is it a host storage vs Windows VM confusion? Or a pure Windows issue?

It would also help if you can confirm that the ZFS settings you see are correct.
Then I can rule out one potential issue. Thanks!

I'm stuck and grateful for any advice – can't go productive without this fixed!

Thanks a lot!
Raid007
 
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