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libxl: fix domain destruction with libxl hotplug script calling

PATCH New Roger Pau Monne 1 participant 4 messages Dec 7, 2011 Arm/actions semi architecture

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#0 lore raw

PATCH v2 1/1 libxl: fix domain destruction with libxl hotplug script calling

When calling hotplug scripts from libxl we have to make sure the device is disconnected before attepmting to execute hotplug scripts.

This patch series sets frontend status to 6 when a domain is destroyed, so the devices are disconnected and then execute hotplug scripts.

Also the syntax of the libxl_domain_destroy has been changed to always force the destruction.

This series should be applied after "libxl: add support for hotplug script calling from libxl".

Changes from v1:

* Remove foce parameter from libxl__devices_destroy and clean up unnecessary code in function.

Please review, Roger.

#1 lore raw

PATCH v2 1/1 libxl: set frontend status to 6 on domain destroy

# HG changeset patch
# User Roger Pau Monne <[email protected]> # Date 1323079583 -3600
# Node ID bc90cfd8dd220d69d09cf94a3d39ff3cef76d021 # Parent 274fa4aea2a30fb82228513f969d7cb807813bb8
libxl: set frontend status to 6 on domain destroy

Set frontend status to 6 on domain destruction and wait for devices to be disconnected before executing hotplug scripts.

tools/libxl/libxl_device.c +1 -4
diff -r 274fa4aea2a3 -r bc90cfd8dd22 tools/libxl/libxl_device.c
@@ -513,10 +513,7 @@ int libxl__device_destroy(libxl__gc *gc,
     char *be_path = libxl__device_backend_path(gc, dev);
     char *fe_path = libxl__device_frontend_path(gc, dev);
 
-    /* 
-     * Run hotplug scripts, which will probably not be able to
-     * execute successfully since the device may still be plugged
-     */
+    libxl__xs_write(gc, XBT_NULL, libxl__sprintf(gc, "%s/%s", fe_path, "state"), "6");
     libxl__device_execute_hotplug(gc, dev, DISCONNECT);
 
     xs_rm(ctx->xsh, XBT_NULL, be_path);
#2 lore raw

PATCH v2 1/1 libxl: remove force parameter from libxl_domain_destroy

In reply to Roger Pau Monne

# HG changeset patch
# User Roger Pau Monne <[email protected]> # Date 1323079605 -3600
# Node ID c0d51df66b829995c4eb3902b5b9914c710a6c01 # Parent bc90cfd8dd220d69d09cf94a3d39ff3cef76d021
libxl: remove force parameter from libxl_domain_destroy

Since a destroy is considered a forced shutdown, there's no point in passing a force parameter. All the occurences of this function have been replaced with the proper syntax.

tools/libxl/libxl.c +2 -2
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/libxl/libxl.c
@@ -718,7 +718,7 @@ int libxl_event_get_disk_eject_info(libx
     return 1;
 }
 
-int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid, int force)
+int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid)
 {
     libxl__gc gc = LIBXL_INIT_GC(ctx);
     libxl_dominfo dominfo;
@@ -767,7 +767,7 @@ int libxl_domain_destroy(libxl_ctx *ctx,
 
         libxl__qmp_cleanup(&gc, domid);
     }
-    if (libxl__devices_destroy(&gc, domid, force) < 0)
+    if (libxl__devices_destroy(&gc, domid, 1) < 0)
         LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "libxl__devices_destroy failed for %d", domid);
 
     vm_path = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/vm", dom_path));
tools/libxl/libxl.h +1 -1
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/libxl/libxl.h
@@ -269,7 +269,7 @@ int libxl_domain_suspend(libxl_ctx *ctx,
                           uint32_t domid, int fd);
 int libxl_domain_resume(libxl_ctx *ctx, uint32_t domid);
 int libxl_domain_shutdown(libxl_ctx *ctx, uint32_t domid, int req);
-int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid, int force);
+int libxl_domain_destroy(libxl_ctx *ctx, uint32_t domid);
 int libxl_domain_preserve(libxl_ctx *ctx, uint32_t domid, libxl_domain_create_info *info, const char *name_suffix, libxl_uuid new_uuid);
 
 /* get max. number of cpus supported by hypervisor */
tools/libxl/libxl_create.c +1 -1
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/libxl/libxl_create.c
@@ -646,7 +646,7 @@ static int do_domain_create(libxl__gc *g
 
 error_out:
     if (domid)
-        libxl_domain_destroy(ctx, domid, 0);
+        libxl_domain_destroy(ctx, domid);
 
     return ret;
 }
tools/libxl/libxl_dm.c +1 -1
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/libxl/libxl_dm.c
@@ -917,7 +917,7 @@ int libxl__destroy_device_model(libxl__g
             goto out;
         }
         LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "Device model is a stubdom, domid=%d", stubdomid);
-        ret = libxl_domain_destroy(ctx, stubdomid, 0);
+        ret = libxl_domain_destroy(ctx, stubdomid);
         if (ret)
             goto out;
     } else {
tools/libxl/xl_cmdimpl.c +6 -6
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/libxl/xl_cmdimpl.c
@@ -1200,7 +1200,7 @@ static int handle_domain_death(libxl_ctx
         /* fall-through */
     case LIBXL_ACTION_ON_SHUTDOWN_DESTROY:
         LOG("Domain %d needs to be cleaned up: destroying the domain", domid);
-        libxl_domain_destroy(ctx, domid, 0);
+        libxl_domain_destroy(ctx, domid);
         break;
 
     case LIBXL_ACTION_ON_SHUTDOWN_COREDUMP_DESTROY:
@@ -1698,7 +1698,7 @@ start:
 error_out:
     release_lock();
     if (libxl_domid_valid_guest(domid))
-        libxl_domain_destroy(ctx, domid, 0);
+        libxl_domain_destroy(ctx, domid);
 
 out:
     if (logfile != 2)
@@ -2168,7 +2168,7 @@ static void destroy_domain(const char *p
         fprintf(stderr, "Cannot destroy privileged domain 0.\n\n");
         exit(-1);
     }
-    rc = libxl_domain_destroy(ctx, domid, 0);
+    rc = libxl_domain_destroy(ctx, domid);
     if (rc) { fprintf(stderr,"destroy failed (rc=%d)\n",rc); exit(-1); }
 }
 
@@ -2414,7 +2414,7 @@ static int save_domain(const char *p, co
     if (checkpoint)
         libxl_domain_unpause(ctx, domid);
     else
-        libxl_domain_destroy(ctx, domid, 0);
+        libxl_domain_destroy(ctx, domid);
 
     exit(0);
 }
@@ -2647,7 +2647,7 @@ static void migrate_domain(const char *d
     }
 
     fprintf(stderr, "migration sender: Target reports successful startup.\n");
-    libxl_domain_destroy(ctx, domid, 1); /* bang! */
+    libxl_domain_destroy(ctx, domid); /* bang! */
     fprintf(stderr, "Migration successful.\n");
     exit(0);
 
@@ -2764,7 +2764,7 @@ static void migrate_receive(int debug, i
     if (rc) {
         fprintf(stderr, "migration target: Failure, destroying our copy.\n");
 
-        rc2 = libxl_domain_destroy(ctx, domid, 1);
+        rc2 = libxl_domain_destroy(ctx, domid);
         if (rc2) {
             fprintf(stderr, "migration target: Failed to destroy our copy"
                     " (code %d).\n", rc2);
tools/python/xen/lowlevel/xl/xl.c +3 -3
diff -r bc90cfd8dd22 -r c0d51df66b82 tools/python/xen/lowlevel/xl/xl.c
@@ -437,10 +437,10 @@ static PyObject *pyxl_domain_shutdown(Xl
 
 static PyObject *pyxl_domain_destroy(XlObject *self, PyObject *args)
 {
-    int domid, force = 1;
-    if ( !PyArg_ParseTuple(args, "i|i", &domid, &force) )
+    int domid;
+    if ( !PyArg_ParseTuple(args, "i", &domid) )
         return NULL;
-    if ( libxl_domain_destroy(self->ctx, domid, force) ) {
+    if ( libxl_domain_destroy(self->ctx, domid) ) {
         PyErr_SetString(xl_error_obj, "cannot destroy domain");
         return NULL;
     }
#3 lore raw

PATCH v2 1/1 libxl: remove force parameter from libxl__devices_destroy

In reply to Roger Pau Monne

# HG changeset patch
# User Roger Pau Monne <[email protected]> # Date 1323081693 -3600
# Node ID 2c0f1676a3667b9070832999818447e51143c110 # Parent c0d51df66b829995c4eb3902b5b9914c710a6c01
libxl: remove force parameter from libxl__devices_destroy

Remove the force flag, and always use forced destruction.

tools/libxl/libxl.c +1 -1
diff -r c0d51df66b82 -r 2c0f1676a366 tools/libxl/libxl.c
@@ -767,7 +767,7 @@ int libxl_domain_destroy(libxl_ctx *ctx,
 
         libxl__qmp_cleanup(&gc, domid);
     }
-    if (libxl__devices_destroy(&gc, domid, 1) < 0)
+    if (libxl__devices_destroy(&gc, domid) < 0)
         LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "libxl__devices_destroy failed for %d", domid);
 
     vm_path = libxl__xs_read(&gc, XBT_NULL, libxl__sprintf(&gc, "%s/vm", dom_path));
tools/libxl/libxl_device.c +4 -41

70 lines not on this page · raw message

tools/libxl/libxl_internal.h +1 -1
diff -r c0d51df66b82 -r 2c0f1676a366 tools/libxl/libxl_internal.h
@@ -252,7 +252,7 @@ _hidden int libxl__parse_backend_path(li
                                       libxl__device *dev);
 _hidden int libxl__device_remove(libxl__gc *gc, libxl__device *dev, int wait);
 _hidden int libxl__device_destroy(libxl__gc *gc, libxl__device *dev);
-_hidden int libxl__devices_destroy(libxl__gc *gc, uint32_t domid, int force);
+_hidden int libxl__devices_destroy(libxl__gc *gc, uint32_t domid);
 _hidden int libxl__wait_for_backend(libxl__gc *gc, char *be_path, char *state);
 
 /* Handler for the libxl__wait_for_device_state callback */