How to reduce the not allocated memory space?

[Leloup78]

Bonjour,
How to shrink the not allocated memory space of the VM?
UUID: 78945.................a
Parent UUID: base
State: created
Type: normal
Location C:/...................machine.vdi
Storage format: VDI
Format version: dynamic default
Capacity: 64228MBytes
Size on disk: 64030MBytes
Encryption: disabled
Property: AllocationBlockSize=1048576

Initial state of the VM

VM_intial_state.png (52.5 KiB) Viewed 1550 times

Expected VM status

VM_expecting_state.png (42.96 KiB) Viewed 1550 times

Regards,
Leloup78

[scottgus1]

"Memory" is RAM. Your screenshots are referring to Disk Space.

There is nothing in Virtualbox that adjusts partitions inside a VM's OS. You have to adjust the partitions using your favorite built-in or 3rd-party partition manager.

Your screenshots are showing the Gparted partition manager. How to use Gparted isn't in the scope of the Virtualbox forum. You should ask on a Gparted forum how to proceed.

[Leloup78]

Happy New Year scottgus1!
I should have explained a little better. In fact, I'm trying to reduce the size of the VM in order to free up the 14.87Gio = (62.72Gio - 48.85Gio) that appear in gray in the image at the very top. I'd be happy with 12 or 13Gio.
I've made a bunch of attempts but I'm beginning to wonder if it's possible.
For more details, you can see: viewtopic.php?t=22422&start=1335
Regards,
Leloup

[scottgus1]

OK< so you're trying to compact the VM. Compacting and CloneVDI only compact when the space inside the VM OS is empty. If for some reason the OS has marked the space as used by data, then the space may not compact.

I'd check on what your VM is doing with that empty space and see if it's a used partition. Then try Gparted inside the VM to expand the yellow partition to fill up the gray space. Once the OS is using the whole space, then the OS can mark disk space as unused and you may be able to compact better.

I would still use CloneVDI: it does not write to the original disk file, making the compacting safer.

[scottgus1]

BTW, viewtopic.php?p=545479#p545479 from poster Tki2000 points out you're using LVM, which isn't supported by CloneVDI. You may be stuck.

[fth0]

I'll make an educated guess that the key to your problem is the key in your screenshot (pun intended ), which probably indicates that you're not only using LVM, but additionally disk encryption. If that's the case, the blocks of zeros created by zerofree are encrypted to blocks of seemingly random data, so VBoxManage --compact cannot work as expected.

One possible strategy would be to temporarily undo the disk encryption, then to zero fill and compact, and finally to re-enable the disk encryption.