[PATCH] qemu: validate: Allow 'preserve' action for on_crash lifecycle action

[Peter Krempa <pkrempa@xxxxxxxxxx>]

In fact keeping the VM around for debugging is a desirable configuration
and actually the implementation has no code as we keep the VM around.

Remove the validation and add a note that it's actually used.

Fixes: b1b85a475fb251b9068b75f629479f5c452f1b43
Reported-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_driver.c   | 1 +
 src/qemu/qemu_validate.c | 5 ++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index dfc27572c4..6ae678b165 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -3647,6 +3647,7 @@ processGuestPanicEvent(virQEMUDriver *driver,
         break;

     case VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE:
+        /* the VM is kept around for debugging */
         break;

     default:
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 9d93f373ab..6b685881a8 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -1083,10 +1083,9 @@ qemuValidateLifecycleAction(virDomainLifecycleAction onPoweroff,
     /* The qemu driver doesn't yet implement any meaningful handling for
      * VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE */
     if (onPoweroff == VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE ||
-        onReboot == VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE ||
-        onCrash == VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE) {
+        onReboot == VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                       _("qemu driver doesn't support the 'preserve' action for 'on_reboot'/'on_poweroff'/'on_crash'"));
+                       _("qemu driver doesn't support the 'preserve' action for 'on_reboot'/'on_poweroff'"));
         return -1;
     }

-- 
2.31.1