Пример #1
0
def main():
    """main routine, signal/exception handling boilerplates"""
    gconf.starttime = time.time()
    set_term_handler()
    GLogger.setup()
    excont = FreeObject(exval=0)
    try:
        try:
            main_i()
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval=excont.exval)
Пример #2
0
def main():
    """main routine, signal/exception handling boilerplates"""
    gconf.starttime = time.time()
    set_term_handler()
    GLogger.setup()
    excont = FreeObject(exval = 0)
    try:
        try:
            main_i()
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval = excont.exval)
Пример #3
0
 def terminate():
     # relax one SIGTERM by setting a handler that sets back
     # standard handler
     set_term_handler(lambda *a: set_term_handler())
     # give a chance to graceful exit
     errno_wrap(os.kill, [-os.getpid(), signal.SIGTERM], [ESRCH])
Пример #4
0
def main():
    rconf.starttime = time.time()

    # If old Glusterd sends commands in old format, below function
    # converts the sys.argv to new format. This conversion is added
    # temporarily for backward compatibility. This can be removed
    # once integrated with Glusterd2
    # This modifies sys.argv globally, so rest of the code works as usual
    argsupgrade.upgrade()

    # Default argparse version handler prints to stderr, which is fixed in
    # 3.x series but not in 2.x, using custom parser to fix this issue
    if "--version" in sys.argv:
        print(GSYNCD_VERSION)
        sys.exit(0)

    parser = ArgumentParser()
    parser.add_argument("--inet6", action="store_true")
    sp = parser.add_subparsers(dest="subcmd")

    # Monitor Status File update
    p = sp.add_parser("monitor-status")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("status", help="Update Monitor Status")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Monitor
    p = sp.add_parser("monitor")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--pause-on-start",
                   action="store_true",
                   help="Start with Paused state")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--use-gconf-volinfo", action="store_true")

    # Worker
    p = sp.add_parser("worker")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--local-path", help="Local Brick Path")
    p.add_argument("--feedback-fd",
                   type=int,
                   help="feedback fd between monitor and worker")
    p.add_argument("--local-node", help="Local master node")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--rpc-fd",
                   help="Read and Write fds for worker-agent communication")
    p.add_argument("--subvol-num", type=int, help="Subvolume number")
    p.add_argument("--is-hottier",
                   action="store_true",
                   help="Is this brick part of hot tier")
    p.add_argument("--resource-remote",
                   help="Remote node to connect to Slave Volume")
    p.add_argument("--resource-remote-id",
                   help="Remote node ID to connect to Slave Volume")
    p.add_argument("--slave-id", help="Slave Volume ID")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Agent
    p = sp.add_parser("agent")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--local-path", help="Local brick path")
    p.add_argument("--local-node", help="Local master node")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--slave-id", help="Slave Volume ID")
    p.add_argument("--rpc-fd",
                   help="Read and Write fds for worker-agent communication")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Slave
    p = sp.add_parser("slave")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--session-owner")
    p.add_argument("--master-brick",
                   help="Master brick which is connected to the Slave")
    p.add_argument("--master-node",
                   help="Master node which is connected to the Slave")
    p.add_argument("--master-node-id",
                   help="Master node ID which is connected to the Slave")
    p.add_argument("--local-node", help="Local Slave node")
    p.add_argument("--local-node-id", help="Local Slave ID")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # All configurations which are configured via "slave-" options
    # DO NOT add default values for these configurations, default values
    # will be picked from template config file
    p.add_argument("--slave-timeout",
                   type=int,
                   help="Timeout to end gsyncd at Slave side")
    p.add_argument("--use-rsync-xattrs", action="store_true")
    p.add_argument("--slave-log-level", help="Slave Gsyncd Log level")
    p.add_argument("--slave-gluster-log-level",
                   help="Slave Gluster mount Log level")
    p.add_argument("--slave-gluster-command-dir",
                   help="Directory where Gluster binaries exist on slave")
    p.add_argument("--slave-access-mount",
                   action="store_true",
                   help="Do not lazy umount the slave volume")

    # Status
    p = sp.add_parser("status")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--local-path", help="Local Brick Path")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--json", action="store_true")

    # Config-check
    p = sp.add_parser("config-check")
    p.add_argument("name", help="Config Name")
    p.add_argument("--value", help="Config Value")
    p.add_argument("--debug", action="store_true")

    # Config-get
    p = sp.add_parser("config-get")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("--name", help="Config Name")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--show-defaults", action="store_true")
    p.add_argument("--only-value", action="store_true")
    p.add_argument("--use-underscore", action="store_true")
    p.add_argument("--json", action="store_true")

    # Config-set
    p = sp.add_parser("config-set")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-n", "--name", help="Config Name")
    p.add_argument("-v", "--value", help="Config Value")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Config-reset
    p = sp.add_parser("config-reset")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("name", help="Config Name")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # voluuidget
    p = sp.add_parser("voluuidget")
    p.add_argument("host", help="Hostname")
    p.add_argument("volname", help="Volume Name")
    p.add_argument("--debug", action="store_true")

    # Delete
    p = sp.add_parser("delete")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument('--path', dest='paths', action="append")
    p.add_argument("--reset-sync-time",
                   action="store_true",
                   help="Reset Sync Time")
    p.add_argument("--debug", action="store_true")

    # Parse arguments
    args = parser.parse_args()

    # Extra template values, All arguments are already part of template
    # variables, use this for adding extra variables
    extra_tmpl_args = {}

    # Add First/Primary Slave host, user and volume
    if getattr(args, "slave", None) is not None:
        hostdata, slavevol = args.slave.split("::")
        hostdata = hostdata.split("@")
        slavehost = hostdata[-1]
        slaveuser = "******"
        if len(hostdata) == 2:
            slaveuser = hostdata[0]
        extra_tmpl_args["primary_slave_host"] = slavehost
        extra_tmpl_args["slaveuser"] = slaveuser
        extra_tmpl_args["slavevol"] = slavevol

    # Add Bricks encoded path
    if getattr(args, "local_path", None) is not None:
        extra_tmpl_args["local_id"] = escape(args.local_path)

    # Add Master Bricks encoded path(For Slave)
    if getattr(args, "master_brick", None) is not None:
        extra_tmpl_args["master_brick_id"] = escape(args.master_brick)

    # Load configurations
    config_file = getattr(args, "config_file", None)

    # Subcmd accepts config file argument but not passed
    # Set default path for config file in that case
    # If an subcmd accepts config file then it also accepts
    # master and Slave arguments.
    if config_file is None and hasattr(args, "config_file"):
        config_file = "%s/geo-replication/%s_%s_%s/gsyncd.conf" % (
            GLUSTERD_WORKDIR, args.master,
            extra_tmpl_args["primary_slave_host"], extra_tmpl_args["slavevol"])

    # If Config file path not exists, log error and continue using default conf
    config_file_error_msg = None
    if config_file is not None and not os.path.exists(config_file):
        # Logging not yet initialized, create the error message to
        # log later and reset the config_file to None
        config_file_error_msg = lf(
            "Session config file not exists, using the default config",
            path=config_file)
        config_file = None

    rconf.config_file = config_file

    # Override gconf values from argument values only if it is slave gsyncd
    override_from_args = False
    if args.subcmd == "slave":
        override_from_args = True

    if args.subcmd == "monitor":
        ret = gconf.is_config_file_old(config_file, args.master,
                                       extra_tmpl_args["slavevol"])
        if ret is not None:
            gconf.config_upgrade(config_file, ret)

    # Load Config file
    gconf.load(GLUSTERFS_CONFDIR + "/gsyncd.conf", config_file, vars(args),
               extra_tmpl_args, override_from_args)

    # Default label to print in log file
    label = args.subcmd
    if args.subcmd in ("worker", "agent"):
        # If Worker or agent, then add brick path also to label
        label = "%s %s" % (args.subcmd, args.local_path)
    elif args.subcmd == "slave":
        # If Slave add Master node and Brick details
        label = "%s %s%s" % (args.subcmd, args.master_node, args.master_brick)

    # Setup Logger
    # Default log file
    log_file = gconf.get("cli-log-file")
    log_level = gconf.get("cli-log-level")
    if getattr(args, "master", None) is not None and \
       getattr(args, "slave", None) is not None:
        log_file = gconf.get("log-file")
        log_level = gconf.get("log-level")

    # Use different log file location for Slave log file
    if args.subcmd == "slave":
        log_file = gconf.get("slave-log-file")
        log_level = gconf.get("slave-log-level")

    if args.debug:
        log_file = "-"
        log_level = "DEBUG"

    # Create Logdir if not exists
    try:
        if log_file != "-":
            os.mkdir(os.path.dirname(log_file))
    except OSError as e:
        if e.errno != EEXIST:
            raise

    setup_logging(log_file=log_file, level=log_level, label=label)

    if config_file_error_msg is not None:
        logging.warn(config_file_error_msg)

    # Log message for loaded config file
    if config_file is not None:
        logging.info(lf("Using session config file", path=config_file))

    set_term_handler()
    excont = FreeObject(exval=0)

    # Gets the function name based on the input argument. For example
    # if subcommand passed as argument is monitor then it looks for
    # function with name "subcmd_monitor" in subcmds file
    func = getattr(subcmds, "subcmd_" + args.subcmd.replace("-", "_"), None)

    try:
        try:
            if func is not None:
                rconf.args = args
                func(args)
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval=excont.exval)
Пример #5
0
 def terminate():
     # relax one SIGTERM by setting a handler that sets back
     # standard handler
     set_term_handler(lambda *a: set_term_handler())
     # give a chance to graceful exit
     os.kill(-os.getpid(), signal.SIGTERM)
Пример #6
0
def main():
    rconf.starttime = time.time()

    # If old Glusterd sends commands in old format, below function
    # converts the sys.argv to new format. This conversion is added
    # temporarily for backward compatibility. This can be removed
    # once integrated with Glusterd2
    # This modifies sys.argv globally, so rest of the code works as usual
    argsupgrade.upgrade()

    # Default argparse version handler prints to stderr, which is fixed in
    # 3.x series but not in 2.x, using custom parser to fix this issue
    if "--version" in sys.argv:
        print(GSYNCD_VERSION)
        sys.exit(0)

    parser = ArgumentParser()
    parser.add_argument("--inet6", action="store_true")
    sp = parser.add_subparsers(dest="subcmd")

    # Monitor Status File update
    p = sp.add_parser("monitor-status")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("status", help="Update Monitor Status")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Monitor
    p = sp.add_parser("monitor")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--pause-on-start",
                   action="store_true",
                   help="Start with Paused state")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--use-gconf-volinfo", action="store_true")

    # Worker
    p = sp.add_parser("worker")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--local-path", help="Local Brick Path")
    p.add_argument("--feedback-fd", type=int,
                   help="feedback fd between monitor and worker")
    p.add_argument("--local-node", help="Local master node")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--rpc-fd",
                   help="Read and Write fds for worker-agent communication")
    p.add_argument("--subvol-num", type=int, help="Subvolume number")
    p.add_argument("--is-hottier", action="store_true",
                   help="Is this brick part of hot tier")
    p.add_argument("--resource-remote",
                   help="Remote node to connect to Slave Volume")
    p.add_argument("--resource-remote-id",
                   help="Remote node ID to connect to Slave Volume")
    p.add_argument("--slave-id", help="Slave Volume ID")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Agent
    p = sp.add_parser("agent")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--local-path", help="Local brick path")
    p.add_argument("--local-node", help="Local master node")
    p.add_argument("--local-node-id", help="Local Node ID")
    p.add_argument("--slave-id", help="Slave Volume ID")
    p.add_argument("--rpc-fd",
                   help="Read and Write fds for worker-agent communication")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Slave
    p = sp.add_parser("slave")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave details user@host::vol format")
    p.add_argument("--session-owner")
    p.add_argument("--master-brick",
                   help="Master brick which is connected to the Slave")
    p.add_argument("--master-node",
                   help="Master node which is connected to the Slave")
    p.add_argument("--master-node-id",
                   help="Master node ID which is connected to the Slave")
    p.add_argument("--local-node", help="Local Slave node")
    p.add_argument("--local-node-id", help="Local Slave ID")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # All configurations which are configured via "slave-" options
    # DO NOT add default values for these configurations, default values
    # will be picked from template config file
    p.add_argument("--slave-timeout", type=int,
                   help="Timeout to end gsyncd at Slave side")
    p.add_argument("--use-rsync-xattrs", action="store_true")
    p.add_argument("--slave-log-level", help="Slave Gsyncd Log level")
    p.add_argument("--slave-gluster-log-level",
                   help="Slave Gluster mount Log level")
    p.add_argument("--slave-gluster-command-dir",
                   help="Directory where Gluster binaries exist on slave")
    p.add_argument("--slave-access-mount", action="store_true",
                   help="Do not lazy umount the slave volume")

    # Status
    p = sp.add_parser("status")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--local-path", help="Local Brick Path")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--json", action="store_true")

    # Config-check
    p = sp.add_parser("config-check")
    p.add_argument("name", help="Config Name")
    p.add_argument("--value", help="Config Value")
    p.add_argument("--debug", action="store_true")

    # Config-get
    p = sp.add_parser("config-get")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("--name", help="Config Name")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")
    p.add_argument("--show-defaults", action="store_true")
    p.add_argument("--only-value", action="store_true")
    p.add_argument("--use-underscore", action="store_true")
    p.add_argument("--json", action="store_true")

    # Config-set
    p = sp.add_parser("config-set")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-n", "--name", help="Config Name")
    p.add_argument("-v", "--value", help="Config Value")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # Config-reset
    p = sp.add_parser("config-reset")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("name", help="Config Name")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument("--debug", action="store_true")

    # voluuidget
    p = sp.add_parser("voluuidget")
    p.add_argument("host", help="Hostname")
    p.add_argument("volname", help="Volume Name")
    p.add_argument("--debug", action="store_true")

    # Delete
    p = sp.add_parser("delete")
    p.add_argument("master", help="Master Volume Name")
    p.add_argument("slave", help="Slave")
    p.add_argument("-c", "--config-file", help="Config File")
    p.add_argument('--path', dest='paths', action="append")
    p.add_argument("--reset-sync-time", action="store_true",
                   help="Reset Sync Time")
    p.add_argument("--debug", action="store_true")

    # Parse arguments
    args = parser.parse_args()

    # Extra template values, All arguments are already part of template
    # variables, use this for adding extra variables
    extra_tmpl_args = {}

    # Add First/Primary Slave host, user and volume
    if getattr(args, "slave", None) is not None:
        hostdata, slavevol = args.slave.split("::")
        hostdata = hostdata.split("@")
        slavehost = hostdata[-1]
        slaveuser = "******"
        if len(hostdata) == 2:
            slaveuser = hostdata[0]
        extra_tmpl_args["primary_slave_host"] = slavehost
        extra_tmpl_args["slaveuser"] = slaveuser
        extra_tmpl_args["slavevol"] = slavevol

    # Add Bricks encoded path
    if getattr(args, "local_path", None) is not None:
        extra_tmpl_args["local_id"] = escape(args.local_path)

    # Add Master Bricks encoded path(For Slave)
    if getattr(args, "master_brick", None) is not None:
        extra_tmpl_args["master_brick_id"] = escape(args.master_brick)

    # Load configurations
    config_file = getattr(args, "config_file", None)

    # Subcmd accepts config file argument but not passed
    # Set default path for config file in that case
    # If an subcmd accepts config file then it also accepts
    # master and Slave arguments.
    if config_file is None and hasattr(args, "config_file"):
        config_file = "%s/geo-replication/%s_%s_%s/gsyncd.conf" % (
            GLUSTERD_WORKDIR,
            args.master,
            extra_tmpl_args["primary_slave_host"],
            extra_tmpl_args["slavevol"])

    # If Config file path not exists, log error and continue using default conf
    config_file_error_msg = None
    if config_file is not None and not os.path.exists(config_file):
        # Logging not yet initialized, create the error message to
        # log later and reset the config_file to None
        config_file_error_msg = lf(
            "Session config file not exists, using the default config",
            path=config_file)
        config_file = None

    rconf.config_file = config_file

    # Override gconf values from argument values only if it is slave gsyncd
    override_from_args = False
    if args.subcmd == "slave":
        override_from_args = True

    # Load Config file
    gconf.load(GLUSTERFS_CONFDIR + "/gsyncd.conf",
               config_file,
               vars(args),
               extra_tmpl_args,
               override_from_args)

    # Default label to print in log file
    label = args.subcmd
    if args.subcmd in ("worker", "agent"):
        # If Worker or agent, then add brick path also to label
        label = "%s %s" % (args.subcmd, args.local_path)
    elif args.subcmd == "slave":
        # If Slave add Master node and Brick details
        label = "%s %s%s" % (args.subcmd, args.master_node, args.master_brick)

    # Setup Logger
    # Default log file
    log_file = gconf.get("cli-log-file")
    log_level = gconf.get("cli-log-level")
    if getattr(args, "master", None) is not None and \
       getattr(args, "slave", None) is not None:
        log_file = gconf.get("log-file")
        log_level = gconf.get("log-level")

    # Use different log file location for Slave log file
    if args.subcmd == "slave":
        log_file = gconf.get("slave-log-file")
        log_level = gconf.get("slave-log-level")

    if args.debug:
        log_file = "-"
        log_level = "DEBUG"

    # Create Logdir if not exists
    try:
        if log_file != "-":
            os.mkdir(os.path.dirname(log_file))
    except OSError as e:
        if e.errno != EEXIST:
            raise

    setup_logging(
        log_file=log_file,
        level=log_level,
        label=label
    )

    if config_file_error_msg is not None:
        logging.warn(config_file_error_msg)

    # Log message for loaded config file
    if config_file is not None:
        logging.info(lf("Using session config file", path=config_file))

    set_term_handler()
    excont = FreeObject(exval=0)

    # Gets the function name based on the input argument. For example
    # if subcommand passed as argument is monitor then it looks for
    # function with name "subcmd_monitor" in subcmds file
    func = getattr(subcmds, "subcmd_" + args.subcmd.replace("-", "_"), None)

    try:
        try:
            if func is not None:
                rconf.args = args
                func(args)
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval=excont.exval)
Пример #7
0
    def monitor(self):
        """the monitor loop

        Basic logic is a blantantly simple blunt heuristics:
        if spawned client survives 60 secs, it's considered OK.
        This servers us pretty well as it's not vulneralbe to
        any kind of irregular behavior of the child...

        ... well, except for one: if children is hung up on
        waiting for some event, it can survive aeons, still
        will be defunct. So we tweak the above logic to
        expect the worker to send us a signal within 60 secs
        (in the form of closing its end of a pipe). The worker
        does this when it's done with the setup stage
        ready to enter the service loop (note it's the setup
        stage which is vulnerable to hangs -- the full
        blown worker blows up on EPIPE if the net goes down,
        due to the keep-alive thread)
        """
        def sigcont_handler(*a):
            """
            Re-init logging and send group kill signal
            """
            md = gconf.log_metadata
            logging.shutdown()
            lcls = logging.getLoggerClass()
            lcls.setup(label=md.get('saved_label'), **md)
            pid = os.getpid()
            os.kill(-pid, signal.SIGUSR1)
        signal.signal(signal.SIGUSR1, lambda *a: ())
        signal.signal(signal.SIGCONT, sigcont_handler)

        argv = sys.argv[:]
        for o in ('-N', '--no-daemon', '--monitor'):
            while o in argv:
                argv.remove(o)
        argv.extend(('-N', '-p', ''))
        argv.insert(0, os.path.basename(sys.executable))

        self.set_state('starting...')
        ret = 0
        def nwait(p, o=0):
            p2, r = waitpid(p, o)
            if not p2:
                return
            return r
        def exit_signalled(s):
            """ child teminated due to receipt of SIGUSR1 """
            return (os.WIFSIGNALED(s) and (os.WTERMSIG(s) == signal.SIGUSR1))
        def exit_status(s):
            if os.WIFEXITED(s):
                return os.WEXITSTATUS(s)
            return 1
        conn_timeout = int(gconf.connection_timeout)
        while ret in (0, 1):
            logging.info('-' * conn_timeout)
            logging.info('starting gsyncd worker')
            pr, pw = os.pipe()
            cpid = os.fork()
            if cpid == 0:
                os.close(pr)
                os.execv(sys.executable, argv + ['--feedback-fd', str(pw)])
            os.close(pw)
            t0 = time.time()
            so = select((pr,), (), (), conn_timeout)[0]
            os.close(pr)
            if so:
                ret = nwait(cpid, os.WNOHANG)
                if ret != None:
                    logging.debug("worker died before establishing connection")
                else:
                    logging.debug("worker seems to be connected (?? racy check)")
                    while time.time() < t0 + conn_timeout:
                        ret = nwait(cpid, os.WNOHANG)
                        if ret != None:
                            logging.debug("worker died in startup phase")
                            break
                        time.sleep(1)
            else:
                logging.debug("worker not confirmed in %d sec, aborting it" % \
                              conn_timeout)
                # relax one SIGTERM by setting a handler that sets back
                # standard handler
                set_term_handler(lambda *a: set_term_handler())
                # give a chance to graceful exit
                os.kill(-os.getpid(), signal.SIGTERM)
                time.sleep(1)
                os.kill(cpid, signal.SIGKILL)
                ret = nwait(cpid)
            if ret == None:
                self.set_state('OK')
                ret = nwait(cpid)
            if exit_signalled(ret):
                ret = 0
            else:
                ret = exit_status(ret)
                if ret in (0,1):
                    self.set_state('faulty')
            time.sleep(10)
        self.set_state('inconsistent')
        return ret