mount.glusterfs.in

分布式文件系统

#!/bin/sh
# (C) 2006, 2007, 2008 Z RESEARCH Inc. <http://www.zresearch.com>
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#   
# 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 General Public License for more details.
#   
# You should have received a copy of the GNU 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



_init ()
{
    # log level definitions
    LOG_NONE=NONE;
    LOG_CRITICAL=CRITICAL;
    LOG_ERROR=ERROR;
    LOG_WARNING=WARNING;
    LOG_DEBUG=DEBUG;

    # set default log level to ERROR
    log_level=$LOG_ERROR;
}

start_glusterfs ()
{
    prefix="@prefix@";
    exec_prefix=@exec_prefix@;
    cmd_line=$(echo "@sbindir@/glusterfs");
    
    if [ -n "$log_level_str" ]; then
	case "$log_level_str" in
	    "ERROR")
		log_level=$LOG_ERROR;
		;;
	    "DEBUG")
		log_level=$LOG_DEBUG;
		;;
	    "CRITICAL")
		log_level=$LOG_CRITICAL;
		;;
	    "WARNING")
		log_level=$LOG_WARNING;
		;;
	    "NONE")
		log_level=$LOG_NONE;
		;;
	    *)
		echo "invalid log level $log_level_str, using ERROR";
		log_level=$LOG_ERROR;
		;;
	esac
    fi
    cmd_line=$(echo "$cmd_line --log-level=$log_level");
    
    if [ -n "$log_file" ]; then
	cmd_line=$(echo "$cmd_line --log-file=$log_file");
    fi

    if [ -n "$direct_io_mode" ]; then
	cmd_line=$(echo "$cmd_line --direct-io-mode=$direct_io_mode");
    fi
    
    if [ -z "$spec_location" ]; then
	cmd_line=$(echo "$cmd_line \
--server=$spec_server_ip \
--port=$spec_server_port");
    else
	cmd_line=$(echo "$cmd_line --spec-file=$spec_location");
    fi

    if [ -n "$volume_name" ]; then
        cmd_line=$(echo "$cmd_line --volume-name=$volume_name");
    fi
    
    cmd_line=$(echo "$cmd_line $mount_point");
    exec $cmd_line;
}


main ()
{
    options=$(echo "$@" | sed -n 's/.*\-o[ ]*\([^ ]*\).*/\1/p');
    new_log_level=$(echo "$options" | sed -n 's/.*log-level=\([^,]*\).*/\1/p');
    
    [ -n "$new_log_level" ] && {
	log_level_str="$new_log_level";
    }
    log_file=$(echo "$options" | sed -n 's/.*log-file=\([^,]*\).*/\1/p');

    direct_io_mode=$(echo "$options" | sed -n 's/.*direct-io-mode=\([^,]*\).*/\1/p');

    volume_name=$(echo "$options" | sed -n 's/.*volume-name=\([^,]*\).*/\1/p');
    
    spec_location="$1";
    
    [ -r "$spec_location" ] || {
	spec_server_ip=$(echo "$spec_location" | sed -n 's/\([^\:]*\).*/\1/p');
	spec_server_port=$(echo "$spec_location" | sed -n 's/.*:\([^ ]*\).*/\1/p');
	[ -n "$spec_server_port" ] || {
	    spec_server_port="6996";
	}

	spec_location="";
    }
    new_fs_options=$(echo "$options" | sed -e 's/[,]*log-file=[^,]*//' \
	                                   -e 's/[,]*log-level=[^,]*//' \
	                                   -e 's/[,]*volume-name=[^,]*//' \
	                                   -e 's/[,]*direct-io-mode=[^,]*//' \
	                                   -e 's/[,]*spec=[^,]*//');
    # following line is product of love towards sed
    # $2=$(echo "$@" | sed -n 's/[^ ]* \([^ ]*\).*/\1/p');
    
    mount_point="$2";
    
    fs_options=$(echo "$fs_options,$new_fs_options");
    
    start_glusterfs;
}

_init "$@" && main "$@";