diff options
| -rwxr-xr-x | extras/snap_scheduler/gcron.py | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/extras/snap_scheduler/gcron.py b/extras/snap_scheduler/gcron.py index a21c40f894f..d72057861ff 100755 --- a/extras/snap_scheduler/gcron.py +++ b/extras/snap_scheduler/gcron.py @@ -21,6 +21,7 @@ import fcntl GCRON_TASKS = "/var/run/gluster/shared_storage/snaps/glusterfs_snap_cron_tasks" GCRON_CROND_TASK = "/etc/cron.d/glusterfs_snap_cron_tasks" +GCRON_RELOAD_FLAG = "/var/run/gluster/crond_task_reload_flag" LOCK_FILE_DIR = "/var/run/gluster/shared_storage/snaps/lock_files/" log = logging.getLogger("gcron-logger") start_time = 0.0 @@ -121,9 +122,41 @@ def main(): global start_time if sys.argv[1] == "--update": if not os.path.exists(GCRON_TASKS): + # Create a flag in /var/run/gluster which indicates that this nodes + # doesn't have access to GCRON_TASKS right now, so that + # when the mount is available and GCRON_TASKS is available + # the flag will tell this routine to reload GCRON_CROND_TASK + try: + f = os.open(GCRON_RELOAD_FLAG, os.O_CREAT | os.O_NONBLOCK, 0644) + os.close(f) + except OSError as (errno, strerror): + if errno != EEXIST: + log.error("Failed to create %s : %s", + GCRON_RELOAD_FLAG, strerror) + output("Failed to create %s. Error: %s" + % (GCRON_RELOAD_FLAG, strerror)) return + if not os.path.exists(GCRON_CROND_TASK): return + + # As GCRON_TASKS exists now, we should check if GCRON_RELOAD_FLAG + # also exists. If so we should touch GCRON_CROND_TASK and remove + # the GCRON_RELOAD_FLAG + if os.path.exists(GCRON_RELOAD_FLAG): + try: + os.remove(GCRON_RELOAD_FLAG); + process = subprocess.Popen(["touch", "-h", GCRON_CROND_TASK], + stdout=subprocess.PIPE, + stderr=subprocess.PIPE) + out, err = process.communicate() + if process.returncode != 0: + log.error("Failed to touch %s. Error: %s.", + GCRON_CROND_TASK, err) + except (IOError, OSError) as (errno, strerror): + log.error("Failed to touch %s. Error: %s.", + GCRON_CROND_TASK, strerror) + return if os.lstat(GCRON_TASKS).st_mtime > \ os.lstat(GCRON_CROND_TASK).st_mtime: try: |