cpr-save <filename> <mode>
Call qmp_cpr_save().
Arguments:
filename : save vmstate to filename
mode: must be "reboot"
cpr-load <filename> <mode>
Call qmp_cpr_load().
Arguments:
filename : load vmstate from filename
mode: must be "reboot"
Signed-off-by: Mark Kanda <mark.ka...@oracle.com>
Signed-off-by: Steve Sistare <steven.sist...@oracle.com>
---
hmp-commands.hx | 39 +++++++++++++++++++++++++++++++++++++++
include/monitor/hmp.h | 2 ++
monitor/hmp-cmds.c | 27 +++++++++++++++++++++++++++
3 files changed, 68 insertions(+)
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 564f1de..9d9f984 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -355,6 +355,45 @@ SRST
ERST
{
+ .name = "cpr-save",
+ .args_type = "filename:s,mode:s",
+ .params = "filename 'reboot'",
+ .help = "create a checkpoint of the VM in file",
+ .cmd = hmp_cpr_save,
+ },
+
+SRST
+``cpr-save`` *filename* *mode*
+ Pause the VCPUs, and create a checkpoint of the virtual machine device state
+ in *filename*. Unlike snapshot-save, this command completes synchronously,
+ saves state to an ordinary file, does not save guest block device blocks,
+ and does not require that guest RAM be saved in the file. The caller must
+ not modify guest block devices between cpr-save and cpr-load.
+
+ If *mode* is 'reboot', the checkpoint remains valid after a host reboot.
+ The guest RAM memory-backend should be shared and non-volatile across
+ reboot, else it will be saved to the file. To resume from the checkpoint,
+ issue the quit command, reboot the system, start qemu using the same
+ arguments plus -S, and issue the cpr-load command.
+ERST
+
+ {
+ .name = "cpr-load",
+ .args_type = "filename:s,mode:s",
+ .params = "filename 'reboot'",
+
+ .help = "load VM checkpoint from file",
+ .cmd = hmp_cpr_load,
+ },
+
+SRST
+``cpr-load`` *filename* *mode*
+ Load a virtual machine from the checkpoint file *filename* that was created
+ earlier by the cpr-save command, and continue the VCPUs. *mode* must match
+ the mode specified for cpr-save.
+ERST
+
+ {
.name = "delvm",
.args_type = "name:s",
.params = "tag",
diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
index 96d0148..b44588e 100644
--- a/include/monitor/hmp.h
+++ b/include/monitor/hmp.h
@@ -59,6 +59,8 @@ void hmp_balloon(Monitor *mon, const QDict *qdict);
void hmp_loadvm(Monitor *mon, const QDict *qdict);
void hmp_savevm(Monitor *mon, const QDict *qdict);
void hmp_delvm(Monitor *mon, const QDict *qdict);
+void hmp_cpr_save(Monitor *mon, const QDict *qdict);
+void hmp_cpr_load(Monitor *mon, const QDict *qdict);
void hmp_migrate_cancel(Monitor *mon, const QDict *qdict);
void hmp_migrate_continue(Monitor *mon, const QDict *qdict);
void hmp_migrate_incoming(Monitor *mon, const QDict *qdict);
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 622c783..bb12589 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -33,6 +33,7 @@
#include "qapi/qapi-commands-block.h"
#include "qapi/qapi-commands-char.h"
#include "qapi/qapi-commands-control.h"
+#include "qapi/qapi-commands-cpr.h"
#include "qapi/qapi-commands-machine.h"
#include "qapi/qapi-commands-migration.h"
#include "qapi/qapi-commands-misc.h"
@@ -1122,6 +1123,32 @@ void hmp_announce_self(Monitor *mon, const QDict *qdict)
qapi_free_AnnounceParameters(params);
}
+void hmp_cpr_save(Monitor *mon, const QDict *qdict)
+{
+ Error *err = NULL;
+ const char *filename = qdict_get_try_str(qdict, "filename");
+ const char *str = qdict_get_try_str(qdict, "mode");
+ CprMode mode = qapi_enum_parse(&CprMode_lookup, str, -1, &err);
+
+ if (mode != -1) {
+ qmp_cpr_save(filename, mode, &err);
+ }
+ hmp_handle_error(mon, err);
+}
+
+void hmp_cpr_load(Monitor *mon, const QDict *qdict)
+{
+ Error *err = NULL;
+ const char *filename = qdict_get_try_str(qdict, "filename");
+ const char *str = qdict_get_try_str(qdict, "mode");
+ CprMode mode = qapi_enum_parse(&CprMode_lookup, str, -1, &err);
+
+ if (mode != -1) {
+ qmp_cpr_load(filename, mode, &err);
+ }
+ hmp_handle_error(mon, err);
+}
+
void hmp_migrate_cancel(Monitor *mon, const QDict *qdict)
{
qmp_migrate_cancel(NULL);
--
1.8.3.1
