pmbootstrap install: runs out of space with ZFS + compression

had an issue with the pmbootstrap install command running out of space on the rootfs image..

so i isolated one common thing i had on two computers that had the same failure, it was ZFS storage backend, and i found a third that still had ext4 rootfs, on that one it works as expected, retested on a third one just to make sure it fails in the same way, and it does, so it feels like 3 failing computers with zfs as storage system should be enough to conclude ZFS is probably the culprit here..

when using ZFS as the backend the created image file seems to run out of space, and when using ext4 it works just like it should. i've tested on three computers with ZFS as filesystem, all three fail in same way.

and for the ones who wants to ask about free space, the one with least free space on the pool got 180G free..

logs: computer with ext4 another with zfs filesystem.

right now i dont have the time to investigate further but i will try and pick this up later on how to make it work with zfs as backend.

i add this now so others dont have to put in a weekend to try and figure out why it fails without any apparent reason.