QEMU snapshot : loadvm error

[Lev Olshvang]

Hi all,

I am getting the following error on  my Ubuntu 9.04 , kernel 2.6.28-15,  
qemu versi 0.10.0

snapshot list (from ide0-hd0):
ID        TAG                 VM SIZE                DATE       VM CLOCK
2         bri                     14M 2009-10-28 11:11:21   19:25:21.601
(qemu) loadvm bri
Error -22 while loading VM state





and here my questions:

First, I am a bit confused about snapshot feature duality:
1. on a command line , qemu - snapshot       means snapshot are made in 
/tmp until they are commited from  qemu monitor so they written to image 
file

2. qcow2 format allows to create snapshot in image file and load 
snapshots from the image file ??? no commit, no need in command line option


3. How many space are available in qcow2 image file for snapshot ?


4. does snapshot remembers qemu command line parameters and whether it 
overrides command line after loadvm ?


ThanX for reading this rather haotic mail, hope for the list help.


Lev