[Libvirt-cim] [PATCH 1 of 2] Make guests with save images appear to be in the suspended state
Dan Smith
danms at us.ibm.com
Wed Jul 30 17:45:27 UTC 2008
# HG changeset patch
# User Dan Smith <danms at us.ibm.com>
# Date 1217439903 25200
# Node ID e348d263e884ba9d0a2116f1e1b1ae706b654850
# Parent d7406e2f4670208cfe61ef9c0065164292ab3942
Make guests with save images appear to be in the suspended state
and refuse to start a domain that has a snapshot.
Signed-off-by: Dan Smith <danms at us.ibm.com>
diff -r d7406e2f4670 -r e348d263e884 src/Makefile.am
--- a/src/Makefile.am Tue Jul 29 12:34:38 2008 -0700
+++ b/src/Makefile.am Wed Jul 30 10:45:03 2008 -0700
@@ -67,6 +67,8 @@
libVirt_ElementSettingData.la
libVirt_ComputerSystem_la_SOURCES = Virt_ComputerSystem.c
+libVirt_ComputerSystem_la_DEPENDENCIES = libVirt_VirtualSystemSnapshotService.la
+libVirt_ComputerSystem_la_LIBADD = -lVirt_VirtualSystemSnapshotService
libVirt_Device_la_SOURCES = Virt_Device.c
libVirt_ComputerSystemIndication_la_DEPENDENCIES = libVirt_ComputerSystem.la libVirt_HostSystem.la
diff -r d7406e2f4670 -r e348d263e884 src/Virt_ComputerSystem.c
--- a/src/Virt_ComputerSystem.c Tue Jul 29 12:34:38 2008 -0700
+++ b/src/Virt_ComputerSystem.c Wed Jul 30 10:45:03 2008 -0700
@@ -43,6 +43,7 @@
#include "Virt_ComputerSystem.h"
#include "Virt_HostSystem.h"
+#include "Virt_VirtualSystemSnapshotService.h"
const static CMPIBroker *_BROKER;
@@ -229,6 +230,18 @@
}
}
+static uint16_t adjust_state_if_saved(const char *name,
+ uint16_t state)
+{
+ if (state != CIM_STATE_DISABLED)
+ return state;
+
+ if (vsss_has_save_image(name))
+ return CIM_STATE_SUSPENDED;
+
+ return state;
+}
+
static int set_state_from_dom(const CMPIBroker *broker,
virDomainPtr dom,
CMPIInstance *instance)
@@ -248,6 +261,7 @@
return 0;
cim_state = state_lv_to_cim((const int)info.state);
+ cim_state = adjust_state_if_saved(virDomainGetName(dom), cim_state);
CMSetProperty(instance, "EnabledState",
(CMPIValue *)&cim_state, CMPI_uint16);
@@ -715,6 +729,29 @@
return ret;
}
+static CMPIStatus start_domain(virDomainPtr dom)
+{
+ CMPIStatus s = {CMPI_RC_OK, NULL};
+
+ if (vsss_has_save_image(virDomainGetName(dom))) {
+ cu_statusf(_BROKER, &s,
+ CMPI_RC_ERR_NOT_SUPPORTED,
+ "Domain has a snapshot");
+ return s;
+ }
+
+ if (virDomainCreate(dom) != 0) {
+ cu_statusf(_BROKER, &s,
+ CMPI_RC_ERR_FAILED,
+ "Unable to start domain");
+ return s;
+ }
+
+ set_scheduler_params(dom);
+
+ return s;
+}
+
static CMPIStatus state_change_enable(virDomainPtr dom, virDomainInfoPtr info)
{
CMPIStatus s = {CMPI_RC_OK, NULL};
@@ -723,8 +760,7 @@
switch (info->state) {
case VIR_DOMAIN_SHUTOFF:
CU_DEBUG("Start domain");
- ret = virDomainCreate(dom);
- set_scheduler_params(dom);
+ s = start_domain(dom);
break;
case VIR_DOMAIN_PAUSED:
CU_DEBUG("Unpause domain");
diff -r d7406e2f4670 -r e348d263e884 src/Virt_VirtualSystemSnapshotService.c
--- a/src/Virt_VirtualSystemSnapshotService.c Tue Jul 29 12:34:38 2008 -0700
+++ b/src/Virt_VirtualSystemSnapshotService.c Wed Jul 30 10:45:03 2008 -0700
@@ -321,6 +321,24 @@
return path;
}
+bool vsss_has_save_image(const char *domname)
+{
+ char *path = NULL;
+ bool result = false;
+
+ path = vsss_get_save_path(domname);
+ if (path == NULL) {
+ CU_DEBUG("Failed top get save path for %s", domname);
+ return false;
+ }
+
+ result = access(path, R_OK | W_OK | F_OK) == 0;
+
+ free(path);
+
+ return result;
+}
+
static struct snap_context *new_context(const char *name,
CMPIStatus *s)
{
@@ -445,6 +463,30 @@
return s;
}
+CMPIStatus vsss_delete_snapshot(const char *domname)
+{
+ CMPIStatus s;
+ char *path = NULL;
+
+ path = vsss_get_save_path(domname);
+ if (path == NULL) {
+ cu_statusf(_BROKER, &s,
+ CMPI_RC_ERR_FAILED,
+ "Unable to get save_path");
+ goto out;
+ }
+
+ if (unlink(path) == -1) {
+ cu_statusf(_BROKER, &s,
+ CMPI_RC_ERR_FAILED,
+ "Unable to remove snapshot: %s", path);
+ }
+ out:
+ free(path);
+
+ return s;
+}
+
static CMPIStatus destroy_snapshot(CMPIMethodMI *self,
const CMPIContext *context,
const CMPIResult *results,
@@ -455,7 +497,6 @@
CMPIStatus s = {CMPI_RC_OK, NULL};
CMPIObjectPath *snap;
char *name = NULL;
- char *path = NULL;
uint32_t retcode = CIM_RETURN_FAILED;
if (cu_get_ref_arg(argsin, "AffectedSnapshot", &snap) != CMPI_RC_OK) {
@@ -472,25 +513,15 @@
goto out;
}
- path = vsss_get_save_path(name);
- if (path == NULL) {
- cu_statusf(_BROKER, &s,
- CMPI_RC_ERR_FAILED,
- "Unable to get save_path");
- goto out;
- }
+ s = vsss_delete_snapshot(name);
- if (unlink(path) == -1) {
- cu_statusf(_BROKER, &s,
- CMPI_RC_ERR_FAILED,
- "Unable to remove snapshot: %s", path);
- }
-
- retcode = CIM_RETURN_COMPLETED;
+ if (s.rc == CMPI_RC_OK)
+ retcode = CIM_RETURN_COMPLETED;
+ else
+ retcode = CIM_RETURN_FAILED;
out:
CMReturnData(results, (CMPIValue *)&retcode, CMPI_uint32);
- free(path);
free(name);
return s;
diff -r d7406e2f4670 -r e348d263e884 src/Virt_VirtualSystemSnapshotService.h
--- a/src/Virt_VirtualSystemSnapshotService.h Tue Jul 29 12:34:38 2008 -0700
+++ b/src/Virt_VirtualSystemSnapshotService.h Wed Jul 30 10:45:03 2008 -0700
@@ -21,6 +21,8 @@
/* Returns a malloc()'d string; caller must free() */
char *vsss_get_save_path(const char *domname);
+bool vsss_has_save_image(const char *domname);
+CMPIStatus vsss_delete_snapshot(const char *domname);
CMPIStatus get_vsss(const CMPIBroker *broker,
const CMPIObjectPath *ref,
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