diff --git a/checkzfs.py b/checkzfs.py
new file mode 100644
index 0000000..a91cbe2
--- /dev/null
+++ b/checkzfs.py
@@ -0,0 +1,630 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# vim: set fileencoding=utf-8:noet
+##  Copyright 2021 sysops.tv ;-)
+##  BSD-2-Clause
+##
+##  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+##
+##  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+##
+##  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+## THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
+## BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+## GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+### for check_mk usage link or copy binary to check_mk_agent/local/checkzfs
+### create /etc/check_mk/checkzfs ## the config file name matches the filename in check_mk_agent/local/
+###         to create a diffent set, link script to check_mk_agent/local/checkzfs2 and create /etc/check_mk/checkzfs2
+###
+### source: host1                   # [optional] comma seperated hostnames to check for source
+### remote: host1                   # [optional]     "              "           "
+### prefix: host1                   # [optional] Prefix for check_mk Servicename - default REPLICA
+### filter: rpool/data|replica      # [optional] regex filter to match source
+### snapshotfilter:                 # [optional] regex filter to match snapshot name
+### threshold: 20,40                # [optional] threshods warn,crit in minutes
+### ssh-extra-options:              # [optional] comma seperated ssh options like added with -o 
+### ssh-identity: /path/to/priv.key # [optional] path to ssh private key
+### disabled: 1                     # [optional] disable the script with this config 
+###
+
+VERSION = 2.7
+
+from pprint import pprint
+import sys
+import re
+import subprocess
+import time
+import json
+import os.path
+import os
+import socket
+from email.message import EmailMessage
+from email.mime.application import MIMEApplication
+from email.utils import formatdate
+
+_ = lambda x: x   ## inline translate ... maybe later
+
+class zfs_snapshot(object):
+    def __init__(self,dataset_obj,snapshot,creation,guid,written,**kwargs):
+        self.replica = set()
+        self.dataset_obj = dataset_obj
+        self.snapshot = snapshot
+        self.creation = int(creation)
+        self.age = int(time.time() - self.creation)
+        self.written = int(written)
+        self.guid = guid
+
+    def add_replica(self,snapshot):
+            self.replica.add(snapshot)
+            self.dataset_obj.add_replica(snapshot.dataset_obj)
+            snapshot.dataset_obj.add_replica(self.dataset_obj)
+
+    def __repr__(self):
+        return f"{self.guid} {self.snapshot}\n"
+
+    def __str__(self):
+        return f"{self.guid} {self.snapshot}\n"
+
+
+
+class zfs_dataset(object):
+    def __init__(self,dataset,guid,used,available,creation,type,autosnapshot,checkzfs,remote=None,source=None,**kwargs):
+        self.checkzfs = checkzfs not in ("false","ignore")
+        self.snapshots = {}
+        self.remote = remote
+        self.source = source
+        self.guid = guid
+        self.dataset = dataset
+        self.creation = creation = int(creation)
+        self.autosnapshot = {"true":2,"false":0}.get(autosnapshot,1) ### macht für crit/warn/ok am meisten sinn so
+        self.type = type
+        self.used = int(used)
+        self.available = int(available)
+        self.replica = set()
+        self.lastsnapshot = ""
+
+    def add_snapshot(self,**kwargs):
+        #print ("Add snapshot"+repr(kwargs))
+        _obj = zfs_snapshot(self,**kwargs)
+        self.snapshots[_obj.guid] = _obj
+        return _obj
+
+    def add_replica(self,ds_object,**kwargs):
+        if self.autosnapshot > 0: ## wenn autosnap auf false wird das wohl das target sein
+            self.replica.add(ds_object)
+
+    def _get_latest_snapshot(self,source=None):
+        _snapshots = self.sorted_snapshots()
+        if source:
+            _snapshots = list(filter(lambda x: x.guid in source.snapshots.keys(),_snapshots))
+        return _snapshots[0] if _snapshots else None
+
+    def sorted_snapshots(self):
+        return sorted(self.snapshots.values(), key=lambda x: x.age)
+
+
+    @property
+    def dataset_name(self):
+        if self.source:
+            return f"{self.source}#{self.dataset}"
+        if not self.remote:
+            return self.dataset
+        return f"{self.remote}#{self.dataset}"
+
+    @property
+    def latest_snapshot(self):
+        if self.snapshots:
+            return self.sorted_snapshots()[0]
+
+
+    def get_info(self,source,threshold=None):
+        _latest = self._get_latest_snapshot(source if source != self else None)
+        _status = None
+        _message = ""
+        if source == self:
+            if not self.replica:
+                _status = 1 ## warn
+                _message = _("kein Replikat gefunden")
+        else:
+            if self.autosnapshot == 1:
+                #_status = 1 ## warn
+                _message = _("com.sun:auto-snapshot ist nicht gesetzt")
+            elif self.autosnapshot == 2:
+                #_status = 2 ## crit
+                _message = _("com.sun:auto-snapshot ist auf Replikationspartner aktiviert")
+
+        if _latest:
+            _threshold_status = ""
+            _age = _latest.age / 60 ## in minuten
+            if threshold:
+                _threshold_status = list(
+                    map(lambda x: x[1], ## return only last
+                        filter(lambda y: y[0] < _age, ## check threshold Texte
+                            zip(threshold,(1,2)) ## warn 1 / crit 2
+                        )
+                    )
+                )
+            if not _threshold_status:
+                if not _status:
+                    _status = 0 ## ok
+            else:
+                _message = _("Snapshot ist zu alt")
+                _status = _threshold_status[-1]
+            if _latest != self.latest_snapshot:
+                _message = _("Rollback zu altem Snapshot.'{0.snapshot}' nicht mehr vorhanden".format(self.latest_snapshot))
+                _status = 2 ## crit
+
+        if not self.checkzfs:
+            _status = -1
+
+        return {
+            "source"        : source.dataset_name if source else "",
+            "replica"       : self.dataset_name if source != self else "",
+            "type"          : self.type,
+            "autosnapshot"  : self.autosnapshot,
+            "used"          : self.used,
+            "available"     : self.available,
+            "creation"      : (_latest.creation if _latest else 0) if source != self else self.creation,
+            "count"         : len(self.snapshots.keys()),
+            "snapshot"      : _latest.snapshot if _latest else "",
+            "age"           : _latest.age if _latest else 0,
+            "written"       : _latest.written if _latest else 0,
+            "status"        : _status,
+            "message"       : _message
+        }
+
+    def __repr__(self):
+        return f"{self.dataset:25.25}{self.type}\n"
+
+    def __str__(self):
+        return f"{self.dataset:25.25}{self.type}  -snapshots: {self.lastsnapshot}\n"
+
+class zfscheck(object):
+    ZFSLIST_REGEX = re.compile("^(?P<dataset>.*?)(?:|@(?P<snapshot>.*?))\t(?P<type>\w*)\t(?P<creation>\d+)\t(?P<guid>\d+)\t(?P<used>\d+|-)\t(?P<available>\d+|-)\t(?P<written>\d+|-)\t(?P<autosnapshot>[-\w]+)\t(?P<checkzfs>[-\w]+)$",re.M)
+    ZFS_DATASETS = {}
+    ZFS_SNAPSHOTS = {}
+    #VALIDCOLUMNS = ["source","replica","type","autosnap","snapshot","creation","guid","used","referenced","size","age","status","message"] ## valid columns
+    VALIDCOLUMNS = zfs_dataset("","",0,0,0,"","","").get_info(None).keys() ## generate with dummy values
+    DEFAULT_COLUMNS = ["status","source","replica","snapshot","age","count"] #,"message"] ## default columns
+    DATEFORMAT = "%a %d.%b.%Y %H:%M"
+    COLOR_CONSOLE = {
+        0  : "\033[92m",  ## ok
+        1  : "\033[93m",  ## warn
+        2  : "\033[91m",  ## crit
+        "reset" : "\033[0m"
+    }
+    COLUMN_NAMES = {  ## Namen frei editierbar
+        "source"        : _("Quelle"),
+        "snapshot"      : _("Snapshotname"),
+        "creation"      : _("Erstellungszeit"),
+        "type"          : _("Typ"),
+        "age"           : _("Alter"),
+        "count"         : _("Anzahl"),
+        "used"          : _("genutzt"),
+        "available"     : _("verfügbar"),
+        "replica"       : _("Replikat"),
+        "written"       : _("geschrieben"),
+        "autosnapshot"  : _("Autosnapshot"),
+        "message"       : _("Kommentar")
+    }
+    COLUMN_ALIGN = {
+        "source"    : "<",
+        "replica"   : "<",
+        "snapshot"  : "<",
+        "copy"      : "<",
+        "status"    : "^"
+    }
+
+    TIME_MULTIPLICATOR = { ## todo
+        "h" : 60, ## Stunden
+        "d" : 60*24, ## Tage
+        "w" : 60 * 24 * 7, ## Wochen
+        "m" : 60 * 24 * 30 ## Monat
+    }
+    COLUMN_MAPPER = {}
+
+    def __init__(self,remote,source,prefix='REPLICA',**kwargs):
+        _start_time = time.time()
+        self.remote = remote.split(",") if remote else [""] if source else []
+        self.source = source.split(",") if source else [""]
+        self.filter = None
+        self.prefix = prefix.strip().replace(" ","_")
+        self.rawdata = False
+        self._overall_status = []
+        self.sortreverse = False
+        self._check_kwargs(kwargs)
+        _data = self.get_data()
+        if self.output == "text":
+            print(self.table_output(_data))
+        if self.output == "html":
+            print( self.html_output(_data))
+        if self.output == "mail":
+            self.mail_output(_data)
+        if self.output == "checkmk":
+            print(self.checkmk_output(_data))
+        if self.output == "json":
+            print(self.json_output(_data))
+        if self.output == "csv":
+            print(self.csv_output(_data))
+
+    def _check_kwargs(self,kwargs):
+        ## argumente überprüfen
+        for _k,_v in kwargs.items():
+            if _k == "columns":
+                _default = self.DEFAULT_COLUMNS[:]
+
+                if not _v:
+                    self.columns = _default
+                    continue ## defaults
+                # add modus wenn mit +
+                if not _v.startswith("+"):
+                    _default = []
+                else:
+                    _v = _v[1:]
+                _v = _v.split(",")
+
+                if _v == ["*"]:
+                    _default = self.VALIDCOLUMNS
+                else:
+                    for _column in _v:
+                        if _column not in self.VALIDCOLUMNS:
+                            raise Exception(_("ungültiger Spaltenname {0} ({1})").format(_v,",".join(self.VALIDCOLUMNS)))
+                        _default.append(_column)
+                _v = list(_default)
+
+            if _k == "sort" and _v:
+                ## sortierung desc wenn mit +
+                if _v.startswith("+"):
+                    self.sortreverse = True
+                    _v = _v[1:]
+                if _v not in self.VALIDCOLUMNS:
+                    raise Exception("ungültiger Spaltenname: {0} ({1})".format(_v,",".join(self.VALIDCOLUMNS)))
+
+            if _k == "threshold" and _v:
+                _v = _v.split(",")
+                ## todo tage etc
+                _v = list(map(int,_v[:2])) ## convert zu int
+                if len(_v) == 1:
+                    _v = (float("inf"),_v[0])
+                _v = sorted(_v)  ## kleinere Wert ist immer warn
+
+            if _k == "filter" and _v:
+                _v = re.compile(_v)
+
+            if _k == "snapshotfilter" and _v:
+                _v = re.compile(_v)
+
+            setattr(self,_k,_v)
+
+        ## funktionen zum anzeigen / muss hier da sonst kein self
+        if not self.rawdata:
+            self.COLUMN_MAPPER = {
+                "creation"      : self.convert_ts_date,
+                "age"           : self.seconds2timespan,
+                "used"          : self.format_bytes,
+                "available"     : self.format_bytes,
+                "written"       : self.format_bytes,
+                "autosnapshot"  : self.format_autosnapshot,
+                "status"        : self.format_status
+            }
+
+    def get_data(self):
+        #_data = self._call_proc()
+        #self.get_local_snapshots(_data,remote=False)
+        _remote_server = self.source + self.remote
+        #pprint(_remote_server)
+        for _remote in _remote_server:
+            _remote = _remote.strip() if type(_remote) == str else None
+            #print(f"S:{_remote}")
+            _data = self._call_proc(_remote)
+            for _entry in self._parse(_data):
+                #if _entry.get("checkzfs") in ("0","false","ignore"):
+                #    continue
+                _dsname = "{0}#{dataset}".format(_remote,**_entry)
+                if _entry.get("type") in ("volume","filesystem"):
+                    if _remote in self.source:
+                        self.ZFS_DATASETS[_dsname] = _dataset = zfs_dataset(**_entry,source=_remote)
+                    #elif _remote in self.remote:
+                    #    self.ZFS_DATASETS[_dsname] = _dataset = zfs_dataset(**_entry,remote=_remote)
+                    else:
+                        self.ZFS_DATASETS[_dsname] = _dataset = zfs_dataset(**_entry,remote=_remote)
+
+                    continue
+                _dataset = self.ZFS_DATASETS.get(_dsname)
+                if not _dataset:
+                    continue
+                if self.snapshotfilter and not self.snapshotfilter.search(_entry.get("snapshot","")):
+                    continue
+                _snapshot = _dataset.add_snapshot(**_entry)
+                _source_snapshot = self.ZFS_SNAPSHOTS.get(_snapshot.guid)
+                if _source_snapshot:
+                    _source_snapshot.add_replica(_snapshot)
+                    continue
+
+                if _remote in self.source: ## nur source snaps zur liste
+                    self.ZFS_SNAPSHOTS[_snapshot.guid] = _snapshot
+
+        _output = []
+        for _dataset in self.ZFS_DATASETS.values():
+            if self.filter and not self.filter.search(_dataset.dataset):
+                continue
+            if _dataset.remote in self.remote or _dataset.autosnapshot == 0:
+                #pprint(_dataset)
+                continue
+            _dataset_info = _dataset.get_info(_dataset,threshold=self.threshold)
+            self._overall_status.append(_dataset_info.get("status",-1))
+            _output.append(_dataset_info)
+            for _replica in _dataset.replica:
+                _replica_info = _replica.get_info(_dataset,threshold=self.threshold)
+                self._overall_status.append(_replica_info.get("status",-1))
+                _output.append(_replica_info)
+
+        return _output
+
+    def _parse(self,data):
+        for _match in self.ZFSLIST_REGEX.finditer(data):
+            yield _match.groupdict()
+
+    def _call_proc(self,remote=None):
+        zfs_args = ["zfs", "list",
+                "-t", "all",
+                "-Hp",  ## script und numeric output
+                "-o", "name,type,creation,guid,used,available,written,com.sun:auto-snapshot,tv.sysops:checkzfs",  ## attributes to show
+                #"-r" ## recursive
+        ]
+        if remote:
+            _privkeyoption = []
+            if self.ssh_identity:
+                _privkeyoption = ["-i",self.ssh_identity]
+            _sshoptions = ["BatchMode=yes","PreferredAuthentications=publickey"]
+            __sshoptions = []
+            if self.ssh_extra_options:
+                _sshoptions += self.ssh_extra_options.split(",")
+            for _sshoption in _sshoptions:
+                __sshoptions += ["-o", _sshoption]
+            _parts = remote.split(":")
+            _port = "22"  ## default port
+            if len(_parts) > 1:
+                remote = _parts[0]
+                _port = _parts[1]
+            zfs_args = ["ssh",
+                remote, ## Hostname
+                "-T",  ## dont allocate Terminal
+                "-p" ,  _port
+            ] + __sshoptions + _privkeyoption + zfs_args
+        _proc = subprocess.Popen(zfs_args,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=False)
+        _stdout, _stderr = _proc.communicate()
+        if _proc.returncode > 0:
+            if remote and _proc.returncode in (2,66,74,76): ## todo max try
+                pass ## todo retry
+                #time.sleep(30)
+                #return self._call_proc(remote=remote)
+            if remote and _proc.returncode in (2,65,66,67,69,70,72,73,74,76,78,79):
+                ## todo set status ssh-error ....
+                pass
+            raise Exception(_stderr.decode(sys.stdout.encoding)) ## Raise Errorlevel with Error from proc
+        return _stdout.decode(sys.stdout.encoding)
+
+    def convert_ts_date(self,ts):
+        return time.strftime(self.DATEFORMAT,time.localtime(ts))
+
+    @staticmethod
+    def format_status(val):
+        return {-1:"ignored",0:"ok",1:"warn",2:"crit"}.get(val,"unknown")
+
+    @staticmethod
+    def format_autosnapshot(val):
+        return {0:"deaktiviert",2:"aktiviert"}.get(val,"nicht konfiguriert")
+
+    @staticmethod
+    def format_bytes(size,unit='B'):
+        # 2**10 = 1024
+        size = float(size)
+        if size == 0:
+            return "0"
+        power = 2**10
+        n = 0
+        power_labels = {0 : '', 1: 'K', 2: 'M', 3: 'G', 4: 'T'}
+        while size > power:
+            size /= power
+            n += 1
+        return "{0:.2f} {1}{2}".format(size, power_labels[n],unit)
+
+    @staticmethod
+    def seconds2timespan(seconds,details=2,seperator=" ",template="{0:.0f}{1}",fixedview=False):
+        _periods = (
+            ('W', 604800),
+            ('T', 86400),
+            ('Std', 3600),
+            ('Min', 60),
+            ('Sek', 1)
+        )
+        _ret = []
+        for _name, _period in _periods:
+            _val = seconds//_period
+            if _val:
+                seconds -= _val * _period
+                #if _val == 1:
+                #    _name = _name[:-1]
+                _ret.append(template.format(_val,_name))
+            else:
+                if fixedview:
+                    _ret.append("")
+        return seperator.join(_ret[:details])
+
+    def _datasort(self,data):
+        if not self.sort:
+            return data
+        return sorted(data, key=lambda k: k[self.sort],reverse=self.sortreverse)
+
+    def checkmk_output(self,data):
+        if not data:
+            return ""
+        _out = []
+        for _item in self._datasort(data):
+            #_out.append(" ".join([str(_item.get(_col,"")) for _col in ("source","replica","snapshot","creation","age")]))
+            _status     = _item.get("status",3)
+            _source     = _item.get("source","").replace(" ","_")
+            _replica    = _item.get("replica","").strip()
+            _creation   = _item.get("creation","0")
+            _count      = _item.get("count","0")
+            _age        = _item.get("age","0")
+            _written    = _item.get("written","0")
+            _available  = _item.get("available","0")
+            _used       = _item.get("used","0")
+            if _status == -1: # or _replica == "":
+                continue
+            if self.threshold:
+                _warn = self.threshold[0] * 60
+                _crit = self.threshold[1] * 60
+                _threshold  = f"{_warn};{_crit}"
+            else:
+                _threshold  = ";"
+            _msg        = _item.get("message","").strip()
+            _msg = _msg if len(_msg) > 0 else "OK"
+            _out.append(f"{_status} {self.prefix}:{_source} age={_age};{_threshold}|creation={_creation};;|file_size={_written};;|fs_used={_used};;|file_count={_count};; {_replica} - {_msg}")
+        return "\n".join(_out)
+
+    def table_output(self,data,color=True):
+        if not data:
+            return
+        #print ("Max-Status: {0}".format(max(self._overall_status))) ## debug
+        _header = data[0].keys() if not self.columns else self.columns
+        _header_names = [self.COLUMN_NAMES.get(i,i) for i in _header]
+        _converter = dict((i,self.COLUMN_MAPPER.get(i,(lambda x: str(x)))) for i in _header)
+        _line_draw = (" | ","-+-","-")
+        if color:
+            _line_draw = (" ║ ","═╬═","═") ## mail quoted printable sonst base64 kein mailfilter
+        _output_data = [_header_names]
+        _line_status = []
+        for _item in self._datasort(data):
+            _line_status.append(_item.get("status"))
+            _output_data.append([_converter.get(_col)(_item.get(_col,"")) for _col in _header])
+
+        _maxwidth = [max(map(len,_col)) for _col in zip(*_output_data)] ## max column breite
+        _format = _line_draw[0].join(["{{:{}{}}}".format(self.COLUMN_ALIGN.get(_h,">"),_w) for _h,_w in zip(_header,_maxwidth)])  ## format bilden mit min.max breite für gleiche spalten
+        _line_print = False
+        _out = []
+        _status = -99 # max(self._overall_status) ## ??max status?? FIXME
+        for _item in _output_data:
+            if _line_print:
+                _status = _line_status.pop(0)
+            if color:
+                _out.append(self.COLOR_CONSOLE.get(_status,"") + _format.format(*_item) + self.COLOR_CONSOLE.get("reset"))
+            else:
+                _out.append(_format.format(*_item))
+            if not _line_print:
+                _out.append(_line_draw[1].join(map(lambda x: x*_line_draw[2],_maxwidth))) ## trennlinie
+                _line_print = True
+        return "\n".join(_out)
+
+    def html_output(self,data):
+        if not data:
+            return ""
+        _header = data[0].keys() if not self.columns else self.columns
+        _header_names = [self.COLUMN_NAMES.get(i,i) for i in _header]
+        _converter = dict((i,self.COLUMN_MAPPER.get(i,(lambda x: str(x)))) for i in _header)
+
+        _out = []
+        _out.append("<html><head>")
+        _out.append("<style type='text/css'>.warn { background-color: yellow } .crit { background-color: red}</style>")
+        _out.append("<title>ZFS</title></head>")
+        _out.append("<body><table border=1>")
+        _out.append("<tr><th>{0}</th></tr>".format("</th><th>".join(_header_names)))
+        for _item in self._datasort(data):
+            _out.append("<tr class='{1}'><td>{0}</td></tr>".format("</td><td>".join([_converter.get(_col)(_item.get(_col,"")) for _col in _header]),_item.get("status","ok")))
+        _out.append("</table></body></html>")
+        return "".join(_out)
+
+    def mail_output(self,data):
+        _hostname = socket.getfqdn()
+        _users = open("/etc/pve/user.cfg","rt").read()
+        _email = "root@{0}".format(_hostname)
+        _emailmatch = re.search("^user:root@pam:.*?:(?P<mail>[\w.]+@[\w.]+):.*?$",_users,re.M)
+        if _emailmatch:
+            _email = _emailmatch.group(1)
+            #raise Exception("No PVE User Email found")
+        _msg = EmailMessage()
+        _msg.set_content(self.table_output(data,color=False))
+        #_msg.add_alternative(self.html_output(data),subtype="html") ## FIXME
+        #_attach = MIMEApplication(self.csv_output(data),Name="zfs-check_{0}.csv".format(_hostname))
+        #_attach["Content-Disposition"] = "attachement; filename=zfs-check_{0}.csv".format(_hostname)
+        #_msg.attach(_attach)
+        _msg["From"] = "ZFS-Checkscript {0} <root@{0}".format(_hostname)
+        _msg["To"] = _email
+        _msg["Date"] = formatdate(localtime=True)
+        _msg["x-checkzfs-status"] = str(max(self._overall_status))
+        _msg["Subject"] = "ZFS-Check {0}".format(_hostname.split(".")[0])
+        _stderr, _stdout = (subprocess.PIPE,subprocess.PIPE)
+        subprocess.run(["/usr/sbin/sendmail","-t","-oi"], input=_msg.as_bytes() ,stderr=_stderr,stdout=_stdout)
+
+    def csv_output(self,data,separator=";"):
+        if not data:
+            return ""
+        _header = data[0].keys() ## alles
+        _header_names = [self.COLUMN_NAMES.get(i,i) for i in _header]
+        _converter = dict((i,self.COLUMN_MAPPER.get(i,(lambda x: str(x)))) for i in _header)
+        _output = [separator.join(_header_names)]
+        for _item in self._datasort(data):
+            _output.append(separator.join([_converter.get(_col)(_item.get(_col,"")) for _col in _header]))
+
+        return "\n".join(_output)
+
+    def json_output(self,data):
+        return json.dumps(data)
+
+if __name__ == "__main__":
+    import argparse
+    _parser = argparse.ArgumentParser("Tool to check ZFS Replication age\n##########################################\n")
+    _parser.add_argument('--remote',type=str,
+                help=_("SSH Connection Data user@host"))
+    _parser.add_argument('--source',type=str,
+                help=_("SSH Connection Data user@host for source"))
+    _parser.add_argument("--filter",type=str,
+                help=_("Regex Filter Datasets"))
+    _parser.add_argument("--snapshotfilter",type=str,
+                help=_("Regex Filter Snapshot"))
+    _parser.add_argument("--output",type=str,default="text",choices=["html","text","mail","checkmk","json","csv"],
+                help=_("Ausgabeformat"))
+    _parser.add_argument("--columns",type=str,
+                help=_("Zeige nur folgende Spalten ({0})".format(",".join(zfscheck.VALIDCOLUMNS))))
+    _parser.add_argument("--sort",type=str,choices=zfscheck.VALIDCOLUMNS,
+                help=_("Sortiere nach Spalte"))
+    _parser.add_argument("--threshold",type=str,
+                help=_("Grenzwerte für Alter von Snapshots warn,crit"))
+    _parser.add_argument("--rawdata",action="store_true",
+               help=_("zeigt Daten als Zahlen"))
+    _parser.add_argument("--prefix",type=str,default='REPLICA',
+               help=_("Prefix für check_mk Service (keine Leerzeichen)"))
+    _parser.add_argument("--ssh-identity",type=str,
+                help=_("Pfad zum ssh private key"))
+    _parser.add_argument("--ssh-extra-options",type=str,
+                help=_("zusätzliche SSH Optionen mit Komma getrennt (HostKeyAlgorithms=ssh-rsa)"))
+    args = _parser.parse_args()
+    _is_checkmk_plugin = os.path.dirname(os.path.abspath(__file__)).endswith("check_mk_agent/local")
+    if _is_checkmk_plugin:
+        try:
+            _config_regex = re.compile("^(disabled|source|remote|prefix|filter|threshold|snapshotfilter|ssh-identity|ssh-extra-options):\s*(.*?)(?:\s+#|$)",re.M)
+            _basename = os.path.basename(__file__).split(".")[0]
+            _rawconfig = open(f"/etc/check_mk/{_basename}","rt").read()
+            for _k,_v in _config_regex.findall(_rawconfig):
+                if _k == "disabled" and _v.lower().strip() in ( "1","yes","true"):
+                    os._exit(0)
+                args.__dict__[_k.replace("-","_")] = _v.strip()
+        except:
+            pass
+        args.output = "checkmk"
+        #sys.stderr.write(repr(args.__dict__))
+    try:
+        zfscheck(**args.__dict__)
+    except KeyboardInterrupt:
+        print("")
+        sys.exit(0)
+    except Exception as e:
+        print(str(e), file=sys.stderr)
+        sys.exit(1)
+