Error: no space left on device

I have a ubuntu 20 on xen with provisioner disk to 200GB.
try to import a lxd image (5 GB).
lxc image import test-2020-04-19.tar.gz.tar.gz --alias test-backup
Error: write /var/snap/lxd/common/lxd/images/lxd_build_430305023/lxd_post_800729170: no space left on device
Any idea
disk can growing to 200 GB.

It means the disk backing /var/snap/lxd/common/lxd/images doesn’t have enough space to store the image. Note that this is separate from any storage pool used in LXD.

You can have that path stored on a storage pool by configuring storage.images_volume (see server documentation).

No. it’s not lxd or image. it’s provisionering in new xcp-ng server (version 8.1).
i can’t create a swap file á 3 GB.
it not growing up in provision disk.