Hello there!

I tried to find this information in the documentation, but without success.

I have a Windows 11 VM and I created a snapshot a few days ago.

Now I have two image files: the base file (vdisk.img) and the overlay with the changes (vdisk-superlongname).

I don't need the snapshot anymore, so I clicked "block commit" for all the overlay changes to be written into the original vdisk.img and the snapshot be removed.

The settings I set in the dialog window are:

Base image: ---base

Top image: ---top

Pivot: checked

Delete: checked

In the scrolldown for base and top the only selectable option is the name of the snapshot (in both of them).

After I click "Action", I get this error message:

what am I doing wrong??

Help is much appreciated. Thanks!

Regards.

Edit: I did not mention that the VM was turned off both at the time of the snapshot and at the time I tried to block commit.

I also found this in the libvirt log, which is weird, because at the same time I block commited, it seems like Unraid was looking for the USB devices attached to the VM (which were in use by another VM):

Edited June 19, 20251 yr by impoftheperverse

Please see this thread, and if you don't find the answer, ask there, or this one could get missed.