mirror of
				https://github.com/qemu/qemu.git
				synced 2025-10-31 20:44:16 +00:00 
			
		
		
		
	 1ef1cee7db
			
		
	
	
		1ef1cee7db
		
	
	
	
	
		
			
			Fix up the reference to qmp-commands.hx in qmp.c. Missed in commit5032a16d1d. Fix up the reference to qmp-commands.txt in docs/xen-save-devices-state.txt. Missed in commit4d8bb958fa. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-29-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
		
			
				
	
	
		
			34 lines
		
	
	
		
			998 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			34 lines
		
	
	
		
			998 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| = Save Devices =
 | |
| 
 | |
| QEMU has code to load/save the state of the guest that it is running.
 | |
| These are two complementary operations.  Saving the state just does
 | |
| that, saves the state for each device that the guest is running.
 | |
| 
 | |
| These operations are normally used with migration (see migration.txt),
 | |
| however it is also possible to save the state of all devices to file,
 | |
| without saving the RAM or the block devices of the VM.
 | |
| 
 | |
| The save operation is available as QMP command xen-save-devices-state.
 | |
| 
 | |
| 
 | |
| The binary format used in the file is the following:
 | |
| 
 | |
| 
 | |
| -------------------------------------------
 | |
| 
 | |
| 32 bit big endian: QEMU_VM_FILE_MAGIC
 | |
| 32 bit big endian: QEMU_VM_FILE_VERSION
 | |
| 
 | |
| for_each_device
 | |
| {
 | |
|     8 bit:              QEMU_VM_SECTION_FULL
 | |
|     32 bit big endian:  section_id
 | |
|     8 bit:              idstr (ID string) length
 | |
|     string:             idstr (ID string)
 | |
|     32 bit big endian:  instance_id
 | |
|     32 bit big endian:  version_id
 | |
|     buffer:             device specific data
 | |
| }
 | |
| 
 | |
| 8 bit: QEMU_VM_EOF
 |