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split do_loadvm() into do_loadvm() and load_vmstate() 

do_loadvm() is now called from the monitor.
load_vmstate() is called by do_loadvm() and when -loadvm command line is used.
Command line don't have to play games with vmstop()/vmstart()

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Juan Quintela 2009-08-20 19:42:20 +02:00 committed by Anthony Liguori
parent f0d99ad711
commit 7b63034926
3 changed files with 15 additions and 10 deletions
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22
savevm.c
View File

@ -1174,14 +1174,13 @@ void do_savevm(Monitor *mon, const char *name)
vm_start();
}
void do_loadvm(Monitor *mon, const char *name)
void load_vmstate(Monitor *mon, const char *name)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
QEMUSnapshotInfo sn;
QEMUFile *f;
int ret;
int saved_vm_running;
bs = get_bs_snapshots();
if (!bs) {
@ -1192,9 +1191,6 @@ void do_loadvm(Monitor *mon, const char *name)
/* Flush all IO requests so they don't interfere with the new state. */
qemu_aio_flush();
saved_vm_running = vm_running;
vm_stop(0);
TAILQ_FOREACH(dinfo, &drives, next) {
bs1 = dinfo->bdrv;
if (bdrv_has_snapshot(bs1)) {
@ -1220,7 +1216,7 @@ void do_loadvm(Monitor *mon, const char *name)
}
/* fatal on snapshot block device */
if (bs == bs1)
goto the_end;
return;
}
}
}
@ -1228,20 +1224,28 @@ void do_loadvm(Monitor *mon, const char *name)
/* Don't even try to load empty VM states */
ret = bdrv_snapshot_find(bs, &sn, name);
if ((ret >= 0) && (sn.vm_state_size == 0))
goto the_end;
return;
/* restore the VM state */
f = qemu_fopen_bdrv(bs, 0);
if (!f) {
monitor_printf(mon, "Could not open VM state file\n");
goto the_end;
return;
}
ret = qemu_loadvm_state(f);
qemu_fclose(f);
if (ret < 0) {
monitor_printf(mon, "Error %d while loading VM state\n", ret);
}
the_end:
}
void do_loadvm(Monitor *mon, const char *name)
{
int saved_vm_running = vm_running;
vm_stop(0);
load_vmstate(mon, name);
if (saved_vm_running)
vm_start();
}

1
sysemu.h
View File

@ -52,6 +52,7 @@ void qemu_system_reset(void);
void do_savevm(Monitor *mon, const char *name);
void do_loadvm(Monitor *mon, const char *name);
void load_vmstate(Monitor *mon, const char *name);
void do_delvm(Monitor *mon, const char *name);
void do_info_snapshots(Monitor *mon);

2
vl.c
View File

@ -6031,7 +6031,7 @@ int main(int argc, char **argv, char **envp)
}
if (loadvm)
do_loadvm(cur_mon, loadvm);
load_vmstate(cur_mon, loadvm);
if (incoming) {
qemu_start_incoming_migration(incoming);