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make load_vmstate() return errors

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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 19:42:22 +02:00 committed by Anthony Liguori
parent c8d41b2c29
commit 05f2401eb2
4 changed files with 14 additions and 10 deletions
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3
monitor.c
View File

@ -1727,8 +1727,7 @@ static void do_loadvm(Monitor *mon, const char *name)
vm_stop(0);
load_vmstate(mon, name);
if (saved_vm_running)
if (load_vmstate(mon, name) >= 0 && saved_vm_running)
vm_start();
}

12
savevm.c
View File

@ -1174,7 +1174,7 @@ void do_savevm(Monitor *mon, const char *name)
vm_start();
}
void load_vmstate(Monitor *mon, const char *name)
int load_vmstate(Monitor *mon, const char *name)
{
DriveInfo *dinfo;
BlockDriverState *bs, *bs1;
@ -1185,7 +1185,7 @@ void load_vmstate(Monitor *mon, const char *name)
bs = get_bs_snapshots();
if (!bs) {
monitor_printf(mon, "No block device supports snapshots\n");
return;
return -EINVAL;
}
/* Flush all IO requests so they don't interfere with the new state. */
@ -1216,7 +1216,7 @@ void load_vmstate(Monitor *mon, const char *name)
}
/* fatal on snapshot block device */
if (bs == bs1)
return;
return 0;
}
}
}
@ -1224,19 +1224,21 @@ void load_vmstate(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))
return;
return -EINVAL;
/* restore the VM state */
f = qemu_fopen_bdrv(bs, 0);
if (!f) {
monitor_printf(mon, "Could not open VM state file\n");
return;
return -EINVAL;
}
ret = qemu_loadvm_state(f);
qemu_fclose(f);
if (ret < 0) {
monitor_printf(mon, "Error %d while loading VM state\n", ret);
return ret;
}
return 0;
}
void do_delvm(Monitor *mon, const char *name)

2
sysemu.h
View File

@ -51,7 +51,7 @@ extern qemu_irq qemu_system_powerdown;
void qemu_system_reset(void);
void do_savevm(Monitor *mon, const char *name);
void load_vmstate(Monitor *mon, const char *name);
int load_vmstate(Monitor *mon, const char *name);
void do_delvm(Monitor *mon, const char *name);
void do_info_snapshots(Monitor *mon);

7
vl.c
View File

@ -6030,8 +6030,11 @@ int main(int argc, char **argv, char **envp)
exit(1);
}
if (loadvm)
load_vmstate(cur_mon, loadvm);
if (loadvm) {
if (load_vmstate(cur_mon, loadvm) < 0) {
autostart = 0;
}
}
if (incoming) {
qemu_start_incoming_migration(incoming);