2019-03-14 00:35:01 +01:00
|
|
|
libxl: disable autoballooning
|
|
|
|
|
|
|
|
Xen 4.12 introduced a CONFIG_DOM0_MEM option, which our xen package uses
|
|
|
|
to configure dom0 with a sensible initial memory value and disables
|
|
|
|
autoballooning. This patch changes libvirt to also disable autoballooning
|
|
|
|
by default. It can only be enabled with the 'autoballoon' setting in
|
|
|
|
libxl.conf. See jsc#SLE-3059 for more details.
|
|
|
|
|
2020-08-06 01:52:04 +02:00
|
|
|
Index: libvirt-6.6.0/src/libxl/libxl.conf
|
2019-03-14 00:35:01 +01:00
|
|
|
===================================================================
|
2020-08-06 01:52:04 +02:00
|
|
|
--- libvirt-6.6.0.orig/src/libxl/libxl.conf
|
|
|
|
+++ libvirt-6.6.0/src/libxl/libxl.conf
|
2019-03-14 00:35:01 +01:00
|
|
|
@@ -4,12 +4,11 @@
|
|
|
|
|
|
|
|
# Enable autoballooning of domain0
|
|
|
|
#
|
|
|
|
-# By default, autoballooning of domain0 is enabled unless its memory
|
|
|
|
-# is already limited with Xen's "dom0_mem=" parameter, in which case
|
|
|
|
-# autoballooning is disabled. Override the default behavior with the
|
|
|
|
-# autoballoon setting.
|
|
|
|
+# By default, autoballooning of domain0 is disabled. Traditionally it
|
|
|
|
+# could also be disabled by using Xen's "dom0_mem=" parameter. Set to
|
|
|
|
+# 1 to enable autoballooning.
|
|
|
|
#
|
|
|
|
-#autoballoon = 1
|
|
|
|
+#autoballoon = 0
|
|
|
|
|
|
|
|
|
|
|
|
# In order to prevent accidentally starting two domains that
|
2020-08-06 01:52:04 +02:00
|
|
|
Index: libvirt-6.6.0/src/libxl/libxl_conf.c
|
2019-03-14 00:35:01 +01:00
|
|
|
===================================================================
|
2020-08-06 01:52:04 +02:00
|
|
|
--- libvirt-6.6.0.orig/src/libxl/libxl_conf.c
|
|
|
|
+++ libvirt-6.6.0/src/libxl/libxl_conf.c
|
|
|
|
@@ -1732,15 +1732,12 @@ libxlMakeBuildInfoVfb(virPortAllocatorRa
|
2019-03-14 00:35:01 +01:00
|
|
|
/*
|
|
|
|
* Get domain0 autoballoon configuration. Honor user-specified
|
|
|
|
* setting in libxl.conf first. If not specified, autoballooning
|
|
|
|
- * is disabled when domain0's memory is set with 'dom0_mem'.
|
|
|
|
- * Otherwise autoballooning is enabled.
|
|
|
|
+ * is disabled.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
libxlGetAutoballoonConf(libxlDriverConfigPtr cfg,
|
|
|
|
virConfPtr conf)
|
|
|
|
{
|
2019-12-03 05:35:26 +01:00
|
|
|
- g_autoptr(GRegex) regex = NULL;
|
|
|
|
- g_autoptr(GError) err = NULL;
|
2019-03-14 00:35:01 +01:00
|
|
|
int res;
|
|
|
|
|
|
|
|
res = virConfGetValueBool(conf, "autoballoon", &cfg->autoballoon);
|
2020-08-06 01:52:04 +02:00
|
|
|
@@ -1749,15 +1746,8 @@ libxlGetAutoballoonConf(libxlDriverConfi
|
2019-03-14 00:35:01 +01:00
|
|
|
else if (res == 1)
|
|
|
|
return 0;
|
|
|
|
|
2019-12-03 05:35:26 +01:00
|
|
|
- regex = g_regex_new("(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
|
|
|
|
- 0, 0, &err);
|
|
|
|
- if (!regex) {
|
2019-03-14 00:35:01 +01:00
|
|
|
- virReportError(VIR_ERR_INTERNAL_ERROR,
|
2019-12-03 05:35:26 +01:00
|
|
|
- _("Failed to compile regex %s"), err->message);
|
2019-03-14 00:35:01 +01:00
|
|
|
- return -1;
|
|
|
|
- }
|
|
|
|
-
|
2019-12-03 05:35:26 +01:00
|
|
|
- cfg->autoballoon = !g_regex_match(regex, cfg->verInfo->commandline, 0, NULL);
|
2019-03-14 00:35:01 +01:00
|
|
|
+ /* make it explicit */
|
|
|
|
+ cfg->autoballoon = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|