xemu/migration
Juan Quintela 560d027b54 migration: We also want to store the global state for savevm
Commit df4b102452 introduced global_state
section.  But it only filled the state while doing migration.  While
doing a savevm, we stored an empty string as state.  So when we did a
loadvm, it complained that state was invalid.

Fedora 21, 4.1.1, qemu 2.4.0-rc0
> ../../configure --target-list="x86_64-softmmu"

068 2s ... - output mismatch (see 068.out.bad)
--- /home/bos/jhuston/src/qemu/tests/qemu-iotests/068.out	2015-07-08
17:56:18.588164979 -0400
+++ 068.out.bad	2015-07-09 17:39:58.636651317 -0400
@@ -6,6 +6,8 @@
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) savevm 0
 (qemu) quit
+qemu-system-x86_64: Unknown savevm section or instance 'globalstate' 0
+qemu-system-x86_64: Error -22 while loading VM state
 QEMU X.Y.Z monitor - type 'help' for more information
 (qemu) quit
 *** done
Failures: 068
Failed 1 of 1 tests

Actually, there were two problems here:
- we registered global_state too late for load_vm (fixed on another
  patch on the list)
- we didn't store a valid state for savevm (fixed by this patch).

Reported-by: John Snow <jsnow@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Tested-by:  Christian Borntraeger <borntraeger@de.ibm.com>
2015-07-15 12:22:54 +02:00
..
block.c block: Use bdrv_drain to replace uncessary bdrv_drain_all 2015-07-07 14:27:14 +01:00
exec.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
fd.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
Makefile.objs Split the QEMU buffered file code out 2014-12-16 17:47:36 +05:30
migration.c migration: We also want to store the global state for savevm 2015-07-15 12:22:54 +02:00
qemu-file-buf.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-file-internal.h Split struct QEMUFile out 2014-12-16 17:47:36 +05:30
qemu-file-stdio.c Start migrating migration code into a migration directory 2014-12-16 17:47:36 +05:30
qemu-file-unix.c socket shutdown 2015-01-16 13:06:17 +05:30
qemu-file.c Rework ram_control_load_hook to hook during block load 2015-07-07 14:54:48 +02:00
ram.c migration: reduce the count of strlen call 2015-07-15 12:21:28 +02:00
rdma.c Fail more cleanly in mismatched RAM cases 2015-07-07 14:54:50 +02:00
savevm.c migration: We also want to store the global state for savevm 2015-07-15 12:22:54 +02:00
tcp.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
unix.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
vmstate.c vmstate: Create optional sections 2015-07-07 14:54:52 +02:00
xbzrle.c Start migrating migration code into a migration directory 2014-12-16 17:47:36 +05:30