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#!/usr/bin/python 

 

# Copyright (C) Cloud Software Group, Inc. 

# 

# This program is free software; you can redistribute it and/or modify 

# it under the terms of the GNU Lesser General Public License as published 

# by the Free Software Foundation; version 2.1 only. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU Lesser General Public License for more details. 

# 

# You should have received a copy of the GNU Lesser General Public License 

# along with this program; if not, write to the Free Software Foundation, Inc., 

# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 

 

""" 

Health check for SR, to be triggered periodically by a systemd timer. What is checked is 

SR implementation type dependent. 

""" 

 

import SR 

import util 

 

 

def main(): 

    """ 

    For all locally plugged SRs check that they are healthy 

    """ 

    try: 

        session = util.get_localAPI_session() 

    except SR.SROSError: 

        util.SMlog("Unable to open local XAPI session", priority=util.LOG_ERR) 

        return 

 

    localhost = util.get_localhost_uuid(session) 

 

    sm_types = [x['type'] for x in session.xenapi.SM.get_all_records_where( 

        'field "required_api_version" = "1.0"').values()] 

    for sm_type in sm_types: 

        srs = session.xenapi.SR.get_all_records_where( 

            'field "type" = "{sm_type}"'.format(sm_type=sm_type)) 

        for sr in srs: 

            pbds = session.xenapi.PBD.get_all_records_where( 

                'field "SR" = "{sr}" and field "host" = "{localhost}"'.format( 

                    sr=sr, localhost=localhost)) 

            if not pbds: 

                continue 

 

            pbd_ref, pbd = pbds.popitem() 

            if not pbd['currently_attached']: 

                continue 

 

            sr_uuid = srs[sr]['uuid'] 

            sr_obj = SR.SR.from_uuid(session, sr_uuid) 

            sr_obj.check_sr(sr_uuid) 

 

 

61if __name__ == "__main__": 

    main()