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libvirt/suse-libxl-disable-autoballoon.patch
James Fehlig b495b9f65b Accepting request 831542 from home:jfehlig:branches:Virtualization
- spec: Enable the same hypervisor drivers for openSUSE and SLE
  jsc#SLE-11772
- spec: Enable the same storage drivers for openSUSE and SLE
  jsc#SLE-11877

- qemu: Reprobe capabilities if the qemu modules directory changes
  2ad009ea-qemu-check-modules-dir.patch
  boo#1175320

- Update to libvirt 6.7.0
  - jsc#SLE-14253, jsc#SLE-15159
  - CVE-2020-14339
  - Many incremental improvements and bug fixes, see
    https://libvirt.org/news.html
  - Dropped patches:
    2edd63a0-fix-virFileSetCOW-logic.patch,
    82bb167f-dont-cache-devmapper-major.patch,
    feb8564a-handle-no-devmapper.patch,
    53d9af1e-ignore-devmapper-open-errors.patch,
    support-managed-pci-xen-driver.patch,
    disable-multipath-pr-tests.patch

OBS-URL: https://build.opensuse.org/request/show/831542
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=840
2020-09-02 22:47:08 +00:00

69 lines
2.4 KiB
Diff

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.
Index: libvirt-6.7.0/src/libxl/libxl.conf
===================================================================
--- libvirt-6.7.0.orig/src/libxl/libxl.conf
+++ libvirt-6.7.0/src/libxl/libxl.conf
@@ -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
Index: libvirt-6.7.0/src/libxl/libxl_conf.c
===================================================================
--- libvirt-6.7.0.orig/src/libxl/libxl_conf.c
+++ libvirt-6.7.0/src/libxl/libxl_conf.c
@@ -1739,15 +1739,12 @@ libxlMakeBuildInfoVfb(virPortAllocatorRa
/*
* 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)
{
- g_autoptr(GRegex) regex = NULL;
- g_autoptr(GError) err = NULL;
int res;
res = virConfGetValueBool(conf, "autoballoon", &cfg->autoballoon);
@@ -1756,15 +1753,8 @@ libxlGetAutoballoonConf(libxlDriverConfi
else if (res == 1)
return 0;
- regex = g_regex_new("(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
- 0, 0, &err);
- if (!regex) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("Failed to compile regex %s"), err->message);
- return -1;
- }
-
- cfg->autoballoon = !g_regex_match(regex, cfg->verInfo->commandline, 0, NULL);
+ /* make it explicit */
+ cfg->autoballoon = 0;
return 0;
}