@feld @BalooUriza

>fs shrinking is insane, nobody should use that.
It has it's uses. It's insane to handle on the FS and partition level, but should be supported at least while offline. Shrinking on a server/workstation is insane, that I agree. For home usage where you are more likely to need it I think it's reasonable, if you have backups.

For example you can't predict how much space you would need on a laptop for a Windows partition 5 years down the line, if you dual boot. Worst case, you can wipe everything and restore from backups for 6 hours as you extract everything from external media.

>BTRFS is also CoW and it's not super useful to compare CoW filesystem so log/journal filesystems as they have very different use cases.
Agreed. I put it there only as an example of features comparison and it's problems.