Installing the StorPool Proxmox integration

Install the StorPool storage plugin file

Perform these steps on all the Proxmox VE hosts which will need to access StorPool-backed volumes and snapshots:

Make sure the StorPool client (the storpool_block service) is installed on the Proxmox host.

Point Apt at the StorPool Debian package repository for the bullseye-backports suite; put the following lines into the /etc/apt/sources.list.d/storpool-backports.sources file:

Types: deb deb-src
URIs: https://repo.storpool.com/public/contrib/debian/
Suites: bullseye-backports
Components: main
Signed-By: /usr/share/keyrings/storpool-keyring.gpg

Install the pve-storpool package:
```
apt install pve-storpool
```

Check the status of the StorPool and Proxmox installation

Make sure the StorPool client (the storpool_block service) is operational:
```
systemctl status storpool_block.service
```

Make sure the StorPool configuration includes the API access variables:

storpool_confshow -e SP_API_HTTP_HOST SP_API_HTTP_PORT SP_AUTH_TOKEN SP_OURID

Make sure the StorPool cluster sees this client as operational:
```
storpool service list
storpool client status
```

Make sure the Proxmox cluster is operational and has a sensible name configured:

pvesh get /cluster/status
pvesh get /cluster/status -output-format json | jq -r '.[] | select(.id == "cluster") | .name'

Create a StorPool-backed Proxmox VE storage

Note: this part may be partly automated by a command-line helper tool.

Choose a StorPool template to use for the storage entry:
```
storpool template list
```
Create a storage entry, specifying the StorPool template to use and some additional tags to set on each StorPool volume and snapshot, e.g. specifying a QoS tier:
```
pvesm add \
  'storpool' \
  'sp-nvme' \
  -shared true \
  -content 'images,iso' \
  -extra-tags 'tier=high' \
  -template 'nvme'
```
Make sure Proxmox VE can query the status of the created storage:
```
pvesm status
```