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#!/bin/bash
#
# osd_login : This script is part of the autologin feature
# mandated by the pnfs-objects standard.
# It is called from objlayoutdriver.ko in the kernel.
# Copyright (C) 2012, Sachin Bhamare <sbhamare@panasas.com>
# Copyright (C) 2012, Boaz Harrosh <bharrosh@panasas.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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
umask 022
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
iscsiadm=/sbin/iscsiadm
PARENT_PID=$BASHPID
WATCHDOG_TIMEOUT=15
protocol=""
portal=""
uri=""
osdname=""
systemid=""
usage()
{
echo "Usage: $0 -u <URI> -o <OSDNAME> -s <SYSTEMID>"
echo "Options:"
echo "-u target uri e.g. iscsi://<ip>:<port>"
echo "-o osdname of the target OSD"
echo "-s systemid of the target OSD"
}
parse_cmdline()
{
argc=$#
if [ $# -lt 3 ]; then
usage
exit 1
fi
# parse the input arguments
while getopts "u:o:s:" options; do
case $options in
u ) uri=$OPTARG;;
o ) osdname=$OPTARG;;
s ) systemid=$OPTARG;;
\? ) usage
exit 1;;
* ) usage
exit 1;;
esac
done
echo "-u : $uri"
echo "-o : $osdname"
echo "-s : $systemid"
protocol=`echo $uri | awk -F ':' '{print $1}'`
portal=`echo $uri | awk -F '//' '{print $2}'`
}
watchdog()
{
timeout=$1
portal=$2
sleep $timeout
if kill -9 $PARENT_PID; then
echo "watchdog : Timed out (>$timeout seconds) while login into $portal" | logger -t "osd_login"
fi
echo "watchdog: exiting .."
exit 2
}
login_iscsi_osd()
{
echo "login into: $1"
if ! $iscsiadm -m discovery -o nonpersistent -t sendtargets -p $1 --login; then
echo "$iscsiadm -m discovery -t sendtargets -p $1 --login returned error $? !"
sleep 1;
fi
}
echo "============= osd_login ========="
echo "progname : $0"
parse_cmdline "$@"
echo "protocol: $protocol"
echo "portal: $portal"
watchdog $WATCHDOG_TIMEOUT $portal &
watchdog_pid=$!
case $protocol in
iscsi)
login_iscsi_osd $portal |& logger -t "osd_login"
;;
*)
echo "Error: protocol $protocol not supported !" | logger -t "osd_login"
;;
esac
kill -9 $watchdog_pid
exit 0
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