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#!/bin/sh
#
# This script does the required startup checks before the iSCSI
# daemon should be started. It also generates a name if that
# hadn't been done before.
#
PATH=/sbin:/bin
NAMEFILE=/etc/iscsi/initiatorname.iscsi
CONFIGFILE=/etc/iscsi/iscsid.conf
if [ ! -e "$CONFIGFILE" ]; then
echo >&2
echo "Error: configuration file $CONFIGFILE is missing!" >&2
echo "The iSCSI driver has not been correctly installed and cannot start." >&2
echo >&2
exit 1
fi
if [ ! -f $NAMEFILE ]; then
echo >&2
echo "Error: InitiatorName file $NAMEFILE is missing!" >&2
echo "The iSCSI driver has not been correctly installed and cannot start." >&2
echo >&2
exit 1
fi
# see if we need to generate a unique iSCSI InitiatorName
if grep -q "^GenerateName=yes" $NAMEFILE ; then
if [ ! -x /sbin/iscsi-iname ] ; then
echo "Error: /sbin/iscsi-iname does not exist, driver was not successfully installed" >&2
exit 1
fi
# Generate a unique InitiatorName and save it
INAME=`/sbin/iscsi-iname -p iqn.1993-08.org.debian:01`
if [ "$INAME" != "" ] ; then
echo "## DO NOT EDIT OR REMOVE THIS FILE!" > $NAMEFILE
echo "## If you remove this file, the iSCSI daemon will not start." >> $NAMEFILE
echo "## If you change the InitiatorName, existing access control lists" >> $NAMEFILE
echo "## may reject this initiator. The InitiatorName must be unique">> $NAMEFILE
echo "## for each iSCSI initiator. Do NOT duplicate iSCSI InitiatorNames." >> $NAMEFILE
printf "InitiatorName=$INAME\n" >> $NAMEFILE
chmod 600 $NAMEFILE
else
echo "Error: failed to generate an iSCSI InitiatorName, driver cannot start." >&2
echo >&2
exit 1
fi
fi
# make sure there is a valid InitiatorName for the driver
if ! grep -q "^InitiatorName=[^ \t\n]" $NAMEFILE ; then
echo >&2
echo "Error: $NAMEFILE does not contain a valid InitiatorName." >&2
echo "The iSCSI driver has not been correctly installed and cannot start." >&2
echo >&2
exit 1
fi
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