[SOLVED] Proxmox high disk usage after migrate to new host

B

big_blue

Member
Jan 31, 2023
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Hi. I have set up a new Proxmox server. It differs from the old one in a few details. Here is an overview:

Old system:
- Proxmox 8.4.14
- Only 2 PCIe SSDs for the OS and VMs.

New system:
- Proxmox 9.1.4
- 2x Sata SSD (rpool for host)
- 2x PCIe SSD for VMs.

I have the ZFS file system on all hard drives. I created the PCIe SSD ZFS via the web interface.

I have now transferred various VMs from one host to the other and see much higher hard disk usage on the new host than on the “old” host. I have already checked various ZFS parameters, but cannot find any difference. Perhaps one of you has an idea what the problem could be.

Many thanks
 
Please share a picture of where you see the space usage as well as zfs list -ospace,refreservation. My guess is you didn't set thin provisioning on the new node.
 
Code: 
zfs list -ospace,refreservation
NAME                        AVAIL   USED  USEDSNAP  USEDDS  USEDREFRESERV  USEDCHILD  REFRESERV
PCIeZFS                      234G  1.53T        0B    112K             0B      1.53T       none
PCIeZFS/subvol-180-disk-0   6.23G  1.77G        0B   1.77G             0B         0B       none
PCIeZFS/subvol-183-disk-0   30.9G  1.14G        0B   1.14G             0B         0B       none
PCIeZFS/subvol-3082-disk-0  29.9G  10.1G        0B   10.1G             0B         0B       none
PCIeZFS/vm-2205-disk-0       271G  40.6G        0B   3.20G          37.4G         0B      40.6G
PCIeZFS/vm-255-disk-0        272G  40.6G        0B   2.62G          38.0G         0B      40.6G
PCIeZFS/vm-3060-disk-0       262G  32.5G        0B   3.92G          28.6G         0B      32.5G
PCIeZFS/vm-3060-disk-1       598G  1016G        0B    651G           364G         0B      1016G
PCIeZFS/vm-3061-disk-0       433G   260G        0B   60.2G           200G         0B       260G
PCIeZFS/vm-3062-disk-0       309G  81.3G        0B   5.79G          75.5G         0B      81.3G
PCIeZFS/vm-3064-disk-0       263G  40.6G        0B   11.1G          29.5G         0B      40.6G
PCIeZFS/vm-4063-disk-0       255G  40.6G        0B   19.1G          21.6G         0B      40.6G
rpool                        109G  2.88G        0B     96K             0B      2.88G       none
rpool/ROOT                   109G  2.86G        0B     96K             0B      2.86G       none
rpool/ROOT/pve-1             109G  2.86G        0B   2.86G             0B         0B       none
rpool/data                   109G    96K        0B     96K             0B         0B       none
rpool/var-lib-vz             109G    96K        0B     96K             0B         0B       none
root@node1:~#
 
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