id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
16711	Convert TRIM commands to hole-punching over raw flat disk image.	jack lee		"We can create a raw disk via:
VBoxManage internalcommands createrawvmdk -filename rawtest.vmdk -rawdisk /path/to/rawdisk.img

Since VirtualBox 4.2 it appears that the AHCI virtual controller supports the ATA TRIM command. However, only the VDI image file backend actually implements it.

My request is for the RAW disk image backend, when receiving a TRIM command from the guest, then hole-punching the RAW disk image file. This will save disk space of the host system.
"	enhancement	new	other	VirtualBox 5.1.22				all	all