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libvirt/libvirt-virDomainDriverAutoShutdown-Refactor-selection-logic-for-VMs.patch

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From 518d76ea990261580c502657e4bf7b9dea22b21e Mon Sep 17 00:00:00 2001
Message-ID: <518d76ea990261580c502657e4bf7b9dea22b21e.1752837271.git.jdenemar@redhat.com>
From: Peter Krempa <pkrempa@redhat.com>
Date: Tue, 1 Jul 2025 17:19:46 +0200
Subject: [PATCH] virDomainDriverAutoShutdown: Refactor selection logic for VMs
Decide separately and record what shutdown modes are to be applied on
given VM object rather than spreading out the logic through the code.
This centralization simplifies the conditions in the worker functions
and also:
- provides easy way to check if the auto-shutdown code will be acting
on domain object (will be used to fix attempt to auto-restore of
VMs which were not selected to be acted on
- will simplify further work where the desired shutdown action will be
picked per-VM
This refactor also fixes a bug where if restoring of the state is
applied also on VMs that are not selected for action based on current
logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
(cherry picked from commit 1c2295fbafab12cb3f943aab8bd015e167cad533)
https://issues.redhat.com/browse/RHEL-95196
---
src/hypervisor/domain_driver.c | 178 +++++++++++++++++++--------------
1 file changed, 101 insertions(+), 77 deletions(-)
diff --git a/src/hypervisor/domain_driver.c b/src/hypervisor/domain_driver.c
index d8ccee40d5..88fb87023a 100644
--- a/src/hypervisor/domain_driver.c
+++ b/src/hypervisor/domain_driver.c
@@ -738,25 +738,32 @@ virDomainDriverAutoShutdownActive(virDomainDriverAutoShutdownConfig *cfg)
}
+enum {
+ VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SAVE = 1 << 1,
+ VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SHUTDOWN = 1 << 2,
+ VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_POWEROFF = 1 << 3,
+ VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_RESTORE = 1 << 4,
+} virDomainDriverAutoShutdownModeFlag;
+
+
static void
virDomainDriverAutoShutdownDoSave(virDomainPtr *domains,
- bool *transient,
+ unsigned int *modes,
size_t numDomains,
virDomainDriverAutoShutdownConfig *cfg)
{
g_autofree unsigned int *flags = g_new0(unsigned int, numDomains);
+ bool hasSave = false;
size_t i;
- if (cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_NONE)
- return;
-
for (i = 0; i < numDomains; i++) {
int state;
- if ((transient[i] && cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT) ||
- (!transient[i] && cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
+ if (!(modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SAVE))
continue;
+ hasSave = true;
+
virSystemdNotifyStatus("Suspending '%s' (%zu of %zu)",
virDomainGetName(domains[i]), i + 1, numDomains);
VIR_INFO("Suspending '%s'", virDomainGetName(domains[i]));
@@ -778,9 +785,11 @@ virDomainDriverAutoShutdownDoSave(virDomainPtr *domains,
virDomainSuspend(domains[i]);
}
+ if (!hasSave)
+ return;
+
for (i = 0; i < numDomains; i++) {
- if ((transient[i] && cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT) ||
- (!transient[i] && cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
+ if (!(modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SAVE))
continue;
virSystemdNotifyStatus("Saving '%s' (%zu of %zu)",
@@ -795,31 +804,27 @@ virDomainDriverAutoShutdownDoSave(virDomainPtr *domains,
virDomainResume(domains[i]);
continue;
}
- virObjectUnref(domains[i]);
- domains[i] = NULL;
+
+ modes[i] = 0;
}
}
static void
virDomainDriverAutoShutdownDoShutdown(virDomainPtr *domains,
- bool *transient,
+ unsigned int *modes,
size_t numDomains,
virDomainDriverAutoShutdownConfig *cfg)
{
GTimer *timer = NULL;
+ bool hasShutdown = false;
size_t i;
- if (cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_NONE)
- return;
-
for (i = 0; i < numDomains; i++) {
- if (domains[i] == NULL)
+ if (!(modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SHUTDOWN))
continue;
- if ((transient[i] && cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT) ||
- (!transient[i] && cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
- continue;
+ hasShutdown = true;
virSystemdNotifyStatus("Shutting down '%s' (%zu of %zu)",
virDomainGetName(domains[i]), i + 1, numDomains);
@@ -833,25 +838,24 @@ virDomainDriverAutoShutdownDoShutdown(virDomainPtr *domains,
}
}
+ if (!hasShutdown)
+ return;
+
timer = g_timer_new();
virSystemdNotifyStatus("Waiting %u secs for VM shutdown completion",
cfg->waitShutdownSecs);
VIR_INFO("Waiting %u secs for VM shutdown completion", cfg->waitShutdownSecs);
+
while (1) {
bool anyRunning = false;
for (i = 0; i < numDomains; i++) {
- if (!domains[i])
- continue;
-
- if ((transient[i] && cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT) ||
- (!transient[i] && cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
+ if (!(modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SHUTDOWN))
continue;
if (virDomainIsActive(domains[i]) == 1) {
anyRunning = true;
} else {
- virObjectUnref(domains[i]);
- domains[i] = NULL;
+ modes[i] = 0;
}
}
@@ -867,21 +871,13 @@ virDomainDriverAutoShutdownDoShutdown(virDomainPtr *domains,
static void
virDomainDriverAutoShutdownDoPoweroff(virDomainPtr *domains,
- bool *transient,
- size_t numDomains,
- virDomainDriverAutoShutdownConfig *cfg)
+ unsigned int *modes,
+ size_t numDomains)
{
size_t i;
- if (cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_NONE)
- return;
-
for (i = 0; i < numDomains; i++) {
- if (domains[i] == NULL)
- continue;
-
- if ((transient[i] && cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT) ||
- (!transient[i] && cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT))
+ if (!(modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_POWEROFF))
continue;
virSystemdNotifyStatus("Destroying '%s' (%zu of %zu)",
@@ -894,11 +890,49 @@ virDomainDriverAutoShutdownDoPoweroff(virDomainPtr *domains,
*/
virDomainDestroy(domains[i]);
- virObjectUnref(domains[i]);
- domains[i] = NULL;
+ modes[i] = 0;
}
}
+static unsigned int
+virDomainDriverAutoShutdownGetMode(virDomainPtr domain,
+ virDomainDriverAutoShutdownConfig *cfg)
+{
+ unsigned int mode = 0;
+
+ if (virDomainIsPersistent(domain) != 0) {
+ if (cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_ALL ||
+ cfg->trySave == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SAVE;
+
+ if (cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_ALL ||
+ cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SHUTDOWN;
+
+ if (cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_ALL ||
+ cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_PERSISTENT)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_POWEROFF;
+
+ /* Don't restore VMs which weren't selected for auto-shutdown */
+ if (mode != 0 && cfg->autoRestore)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_RESTORE;
+ } else {
+ if (cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_ALL ||
+ cfg->tryShutdown == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_SHUTDOWN;
+
+ if (cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_ALL ||
+ cfg->poweroff == VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_SCOPE_TRANSIENT)
+ mode |= VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_POWEROFF;
+
+ if (cfg->autoRestore)
+ VIR_DEBUG("Cannot auto-restore transient VM '%s'",
+ virDomainGetName(domain));
+ }
+
+ return mode;
+}
+
void
virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
@@ -907,7 +941,7 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
int numDomains = 0;
size_t i;
virDomainPtr *domains = NULL;
- g_autofree bool *transient = NULL;
+ g_autofree unsigned int *modes = NULL;
VIR_DEBUG("Run autoshutdown uri=%s trySave=%s tryShutdown=%s poweroff=%s waitShutdownSecs=%u saveBypassCache=%d autoRestore=%d",
cfg->uri,
@@ -948,58 +982,48 @@ virDomainDriverAutoShutdown(virDomainDriverAutoShutdownConfig *cfg)
return;
if (!(conn = virConnectOpen(cfg->uri)))
- goto cleanup;
+ return;
if ((numDomains = virConnectListAllDomains(conn,
&domains,
VIR_CONNECT_LIST_DOMAINS_ACTIVE)) < 0)
- goto cleanup;
+ return;
VIR_DEBUG("Auto shutdown with %d running domains", numDomains);
- transient = g_new0(bool, numDomains);
- for (i = 0; i < numDomains; i++) {
- if (virDomainIsPersistent(domains[i]) == 0)
- transient[i] = true;
+ modes = g_new0(unsigned int, numDomains);
- if (cfg->autoRestore) {
- if (transient[i]) {
- VIR_DEBUG("Cannot auto-restore transient VM %s",
- virDomainGetName(domains[i]));
- } else {
- VIR_DEBUG("Mark %s for autostart on next boot",
- virDomainGetName(domains[i]));
- if (virDomainSetAutostartOnce(domains[i], 1) < 0) {
- VIR_WARN("Unable to mark domain '%s' for auto restore: %s",
- virDomainGetName(domains[i]),
- virGetLastErrorMessage());
- }
+ for (i = 0; i < numDomains; i++) {
+ modes[i] = virDomainDriverAutoShutdownGetMode(domains[i], cfg);
+
+ if (modes[i] == 0) {
+ /* VM wasn't selected for any of the shutdown modes. There's not
+ * much we can do about that as the host is powering off, logging
+ * at least lets admins know */
+ VIR_WARN("auto-shutdown: domain '%s' not successfully shut off by any action",
+ domains[i]->name);
+ }
+
+ if (modes[i] & VIR_DOMAIN_DRIVER_AUTO_SHUTDOWN_MODE_RESTORE) {
+ VIR_DEBUG("Mark '%s' for autostart on next boot",
+ virDomainGetName(domains[i]));
+ if (virDomainSetAutostartOnce(domains[i], 1) < 0) {
+ VIR_WARN("Unable to mark domain '%s' for auto restore: %s",
+ virDomainGetName(domains[i]),
+ virGetLastErrorMessage());
}
}
}
- virDomainDriverAutoShutdownDoSave(domains, transient, numDomains, cfg);
- virDomainDriverAutoShutdownDoShutdown(domains, transient, numDomains, cfg);
- virDomainDriverAutoShutdownDoPoweroff(domains, transient, numDomains, cfg);
+ virDomainDriverAutoShutdownDoSave(domains, modes, numDomains, cfg);
+ virDomainDriverAutoShutdownDoShutdown(domains, modes, numDomains, cfg);
+ virDomainDriverAutoShutdownDoPoweroff(domains, modes, numDomains);
virSystemdNotifyStatus("Processed %d domains", numDomains);
VIR_INFO("Processed %d domains", numDomains);
- cleanup:
- if (domains) {
- /* Anything non-NULL in this list indicates none of
- * the configured ations were successful in processing
- * the domain. There's not much we can do about that
- * as the host is powering off, logging at least lets
- * admins know
- */
- for (i = 0; i < numDomains; i++) {
- if (domains[i] == NULL)
- continue;
- VIR_WARN("auto-shutdown: domain '%s' not successfully shut off by any action",
- domains[i]->name);
- virObjectUnref(domains[i]);
- }
- VIR_FREE(domains);
- }
+ for (i = 0; i < numDomains; i++)
+ virObjectUnref(domains[i]);
+
+ VIR_FREE(domains);
}
--
2.50.1
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