Why is `private.img` kept around for volumes with `revisions_to_keep = 0`?

[Johnboy]

Unfortunately a problem with R4.2 which made me switch back to LVM

Very slow shutdown of large VMs in 4.2 (even with BTRFS)

This is a fresh install of QubesOS 4.2. It works great so far but when shutting down large VMs (e.g. 700 GB or more), the shutdown takes ~10 minutes. With 4.1, the same VMs were shutting down far below 1 minute on exactly the same hardware. I’m already using BTRFS (see also this comment) and I’ve already tried to set “revisions_to_keep” to “0” for those VMs but it didn’t make a difference. I didn’t have any issues with this with 4.1 and BTRFS. Any suggestions would be highly appreciated, than…

maybe you can find some sort of workaround/fix?