How to recover storage ZFS

After reading this How long will the Deleted Container under ZFS permenantly removed
I am unsure what do to:

  1. How to recover space
  2. Set it so that containers can use all the available storage?
    Thanks.
lxc --version
3.0.3

lxc profile  show default
config: {}
description: Default LXD profile
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: lxdbr0
    type: nic
  root:
    path: /
    pool: default
    size: 200GB
    type: disk
name: default
used_by:



lxc storage list
+---------+-------------+--------+--------------------------+---------+
|  NAME   | DESCRIPTION | DRIVER |          SOURCE          | USED BY |
+---------+-------------+--------+--------------------------+---------+
| default |             | zfs    | zpoolnvme0n1p4/lxd-space | 6       |

zfs list -t all
NAME                                                                                                                         USED  AVAIL  REFER  MOUNTPOINT
zpoolnvme0n1p4                                                                                                               263G  87,8G    96K  /zpoolnvme0n1p4
zpoolnvme0n1p4/lxd-space                                                                                                     262G  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/containers                                                                                          163G  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/containers/gl-base                                              1,11G  87,8G  1,72G  /var/lib/lxd/storage-pools/default/containers/gl-base
zpoolnvme0n1p4/lxd-space/containers/gl-d2                                                               161G  34,1G  57,7G  /var/lib/lxd/storage-pools/default/containers/gl-d2
zpoolnvme0n1p4/lxd-space/containers/gl-d2@snapshot-backup                                              98,5G      -   104G  -
zpoolnvme0n1p4/lxd-space/containers/gl-d2@snapshot-auto-backup                                         10,4G      -  16,3G  -
zpoolnvme0n1p4/lxd-space/containers/gl-d1                                                        500M  87,8G  5,76G  /var/lib/lxd/storage-pools/default/containers/gl-d1
zpoolnvme0n1p4/lxd-space/custom                                                                                               96K  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/deleted                                                                                            99,3G  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/deleted/containers                                                                                 98,0G  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/deleted/containers/652fffb6-f545-4132-890f-ea172c4029af                                            93,1G     0B  93,1G  none
zpoolnvme0n1p4/lxd-space/deleted/containers/652fffb6-f545-4132-890f-ea172c4029af@copy-e06a30f9-19ec-44f4-a37d-dc41a947d7f7   328K      -  93,1G  -
zpoolnvme0n1p4/lxd-space/deleted/containers/ab6761fe-230b-43e4-8dc9-3582f08ce829                                            18,8M  87,8G  5,49G  none
zpoolnvme0n1p4/lxd-space/deleted/containers/ab6761fe-230b-43e4-8dc9-3582f08ce829@copy-c2c5e3f8-6e9c-4487-8385-a2c576d8f44b     8K      -  5,49G  -
zpoolnvme0n1p4/lxd-space/deleted/containers/e65b4a13-fa2f-42a7-afd5-2951252cb8c8                                            4,88G  41,7G  5,49G  none
zpoolnvme0n1p4/lxd-space/deleted/containers/e65b4a13-fa2f-42a7-afd5-2951252cb8c8@copy-3670f026-328e-4418-9c4f-6f107d62358e     8K      -  5,49G  -
zpoolnvme0n1p4/lxd-space/deleted/images                                                                                     1,27G  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/deleted/images/43305e00159a91fa26fc2ee5f07a43f153ac53046fcf703c2255affd92c21aae                     650M  87,8G   650M  none
zpoolnvme0n1p4/lxd-space/deleted/images/43305e00159a91fa26fc2ee5f07a43f153ac53046fcf703c2255affd92c21aae@readonly              0B      -   650M  -
zpoolnvme0n1p4/lxd-space/deleted/images/bd2ffb937c95633a28091e6efc42d6c7b1474ad8eea80d6ed8df800e44c6bfdd                     649M  87,8G   649M  none
zpoolnvme0n1p4/lxd-space/deleted/images/bd2ffb937c95633a28091e6efc42d6c7b1474ad8eea80d6ed8df800e44c6bfdd@readonly              0B      -   649M  -
zpoolnvme0n1p4/lxd-space/images                                                                                               96K  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/snapshots                                                                                           192K  87,8G    96K  none
zpoolnvme0n1p4/lxd-space/snapshots/gl-d2                                                                 96K  87,8G    96K  none
zpoolnvme0n1p4/var-lib-lxd                                                                                                  1,87M  87,8G  1,87M  /var/lib/lxd

Is the CORRECT solution to export these to tar; Then delete the containers. then reimport it? (Like this example? Backup the container and install it on another server - #2 by stgraber)

Yeah, exporting and importing would work.

You could also set the zfs.clone_copy property to false on your storage pool and then copy your existing instances, then delete the old ones, this should achieve the same result.

Deleted some old snapshots. It recovered space immediately. Thank you.