Debug Hibernate: Try with sync

microsoft/testsuites/power/common.py

@@ -74,6 +74,14 @@ def verify_hibernation(
 
     # only set up hibernation setup tool for the first time
     hibernation_setup_tool.start()
+    # This is a temporary workaround for a bug observed in Redhat Distros
+    # where the VM is not able to hibernate immediately after installing
+    # the hibernation-setup tool.
+    # A sleep(100) also works, but we are unsure of the exact time required.
+    # So it is safer to reboot the VM.
+    node.execute("sync", sudo=True)
+    # if isinstance(node.os, Redhat):
+    #     node.reboot()
 
     boot_time_before_hibernation = node.execute(
         "echo \"$(last reboot -F | head -n 1 | awk '{print $5, $6, $7, $8, $9}')\"",
@@ -82,7 +90,6 @@ def verify_hibernation(
     ).stdout
 
     hibfile_offset = hibernation_setup_tool.get_hibernate_resume_offset_from_hibfile()
-    time.sleep(100)
     try:
         startstop.stop(state=features.StopState.Hibernate)
     except Exception as ex: