How to reduce private storage max size

[enmus]

Why doesn't Qubes 4.1 use full disk space (LVM)?

IIRC LVM config was change for 4.1: dom0 LVs and VM LVs are now in different thinpools under 4.1. Problems with the VM thinpool are now much less likely to prevent booting into dom0 (this allows better recovery options). the total space asked for at install is less than 100%. however, the thinpools have both been set to autoextend into unused space in the VG. By not claiming all the space in the VG, 4.1 will grow each thinpool into unused space as needed, at least until all space is allocated…