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diff --git a/heartbeat/iscsi b/heartbeat/iscsi
index b168394a9..581f6bec1 100755
--- a/heartbeat/iscsi
+++ b/heartbeat/iscsi
@@ -1,452 +1,452 @@
#!/bin/sh
#
# iSCSI OCF resource agent
# Description: manage iSCSI disks (add/remove) using open-iscsi
#
# Copyright Dejan Muhamedagic <dejan@suse.de>
# (C) 2007 Novell Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
# See usage() and meta_data() below for more details...
#
# OCF instance parameters:
# OCF_RESKEY_portal: the iSCSI portal address or host name (required)
# OCF_RESKEY_target: the iSCSI target (required)
# OCF_RESKEY_iscsiadm: iscsiadm program path (optional)
# OCF_RESKEY_discovery_type: discovery type (optional; default: sendtargets)
#
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
# Defaults
OCF_RESKEY_udev_default="yes"
OCF_RESKEY_iscsiadm_default="iscsiadm"
OCF_RESKEY_discovery_type_default="sendtargets"
: ${OCF_RESKEY_udev=${OCF_RESKEY_udev_default}}
: ${OCF_RESKEY_iscsiadm=${OCF_RESKEY_iscsiadm_default}}
: ${OCF_RESKEY_discovery_type=${OCF_RESKEY_discovery_type_default}}
usage() {
methods=`iscsi_methods`
methods=`echo $methods | tr ' ' '|'`
cat <<EOF
usage: $0 {$methods}
$0 manages an iSCSI target
The 'start' operation starts (adds) the iSCSI target.
The 'stop' operation stops (removes) the iSCSI target.
The 'status' operation reports whether the iSCSI target is connected
The 'monitor' operation reports whether the iSCSI target is connected
The 'validate-all' operation reports whether the parameters are valid
The 'methods' operation reports on the methods $0 supports
EOF
}
meta_data() {
cat <<EOF
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="iscsi">
<version>1.0</version>
<longdesc lang="en">
OCF Resource Agent for iSCSI. Add (start) or remove (stop) iSCSI
targets.
</longdesc>
<shortdesc lang="en">Manages a local iSCSI initiator and its connections to iSCSI targets</shortdesc>
<parameters>
<parameter name="portal" unique="0" required="1">
<longdesc lang="en">
The iSCSI portal address in the form: {ip_address|hostname}[":"port]
</longdesc>
<shortdesc lang="en">Portal address</shortdesc>
<content type="string" />
</parameter>
<parameter name="target" unique="1" required="1">
<longdesc lang="en">
The iSCSI target IQN.
</longdesc>
<shortdesc lang="en">Target IQN</shortdesc>
<content type="string" />
</parameter>
<parameter name="discovery_type" unique="0" required="0">
<longdesc lang="en">
Target discovery type. Check the open-iscsi documentation for
supported discovery types.
</longdesc>
<shortdesc lang="en">Target discovery type</shortdesc>
<content type="string" default="${OCF_RESKEY_discovery_type_default}" />
</parameter>
<parameter name="iscsiadm" unique="0" required="0">
<longdesc lang="en">
open-iscsi administration utility binary.
</longdesc>
<shortdesc lang="en">iscsiadm binary</shortdesc>
<content type="string" default="${OCF_RESKEY_iscsiadm_default}" />
</parameter>
<parameter name="udev" unique="0" required="0">
<longdesc lang="en">
If the next resource depends on the udev creating a device then
we wait until it is finished. On a normally loaded host this
should be done quickly, but you may be unlucky. If you are not
using udev set this to "no", otherwise we will spin in a loop
until a timeout occurs.
</longdesc>
<shortdesc lang="en">udev</shortdesc>
<content type="string" default="${OCF_RESKEY_udev_default}" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="120" />
<action name="stop" timeout="120" />
<action name="status" timeout="30" />
<action name="monitor" depth="0" timeout="30" interval="120" />
<action name="validate-all" timeout="5" />
<action name="methods" timeout="5" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
EOF
}
iscsi_methods() {
cat <<EOF
start
stop
status
monitor
validate-all
methods
meta-data
usage
EOF
}
#
# open-iscsi interface
#
is_iscsid_running() {
ps -e -o cmd | grep -qs '[i]scsid'
}
open_iscsi_setup() {
discovery=open_iscsi_discovery
add_disk=open_iscsi_add
remove_disk=open_iscsi_remove
disk_status=open_iscsi_status
iscsiadm=${OCF_RESKEY_iscsiadm}
have_binary ${iscsiadm} ||
return 3
if is_iscsid_running; then
return 0
elif grep -qs '^iscsid.startup' /etc/iscsi/iscsid.conf; then
# apparently on RedHat (perhaps elsewhere?), there is a
# kind of iscsid autostart once root invokes some
# open_iscsi command; the iscsid.startup hook should take
# care of it; reported by m.richardson@ed.ac.uk (see also
# the discussion at the linux-ha-dev ML)
return 1
else
ocf_log err "iscsid not running; please start open-iscsi utilities"
return 2
fi
}
#
# discovery return codes:
# 0: ok (variable portal set)
# 1: target not found
# 2: target found but can't connect it unambigously
# 3: iscsiadm returned error
#
# open-iscsi >= "2.0-872" changed discovery semantics
# see http://www.mail-archive.com/open-iscsi@googlegroups.com/msg04883.html
# there's a new discoverydb command which should be used instead discovery
open_iscsi_discovery() {
local output
local severity=err
local discovery_variant="discovery"
local options=""
local cmd
local version=`$iscsiadm --version | awk '{print $3}'`
ocf_version_cmp "$version" "2.0-871"
if [ $? -eq 2 ]; then # newer than 2.0-871?
discovery_variant="discoverydb"
[ "$discovery_type" = "sendtargets" ] &&
options="-D"
fi
cmd="$iscsiadm -m $discovery_variant -p $OCF_RESKEY_portal -t $discovery_type $options"
ocf_is_probe && severity=info
output=`$cmd`
if [ $? -ne 0 -o x = "x$output" ]; then
[ x != "x$output" ] && {
ocf_log $severity "$cmd FAILED"
echo "$output"
}
return 3
fi
PORTAL=`echo "$output" |
awk -v target="$OCF_RESKEY_target" '
$NF==target{
if( NF==3 ) portal=$2; # sles compat mode
else portal=$1;
sub(",.*","",portal);
print portal;
}'`
case `echo "$PORTAL" | wc -w` in
0) #target not found
echo "$output"
ocf_log $severity "target $OCF_RESKEY_target not found at portal $OCF_RESKEY_portal"
return 1
;;
1) #we're ok
return 0
;;
*) # handle multihome hosts reporting multiple portals
for p in $PORTAL; do
if [ "$OCF_RESKEY_portal" = "$p" ]; then
PORTAL="$OCF_RESKEY_portal"
return 0
fi
done
echo "$output"
ocf_log err "sorry, can't handle multihomed hosts unless you specify the portal exactly"
return 2
;;
esac
}
open_iscsi_add() {
$iscsiadm -m node -p $1 -T $2 -l
}
open_iscsi_get_session_id() {
local target="$1"
$iscsiadm -m session | grep "$target$" |
awk '{print $2}' | tr -d '[]'
}
open_iscsi_remove() {
local target="$1"
local session_id
session_id=`open_iscsi_get_session_id "$target"`
if [ "$session_id" ]; then
$iscsiadm -m session -r $session_id -u
else
ocf_log err "cannot find session id for target $target"
return 1
fi
}
open_iscsi_status() {
$iscsiadm -m session 2>/dev/null | grep -qs "$1$"
}
disk_discovery() {
$discovery # discover and setup the real portal string (address)
case $? in
0) ;;
1) [ "$__OCF_ACTION" = stop ] && exit $OCF_SUCCESS
[ "$__OCF_ACTION" = monitor ] && exit $OCF_NOT_RUNNING
[ "$__OCF_ACTION" = status ] && exit $LSB_STATUS_STOPPED
exit $OCF_ERR_GENERIC
;;
2) [ "$__OCF_ACTION" = stop ] && {
iscsi_monitor || exit $OCF_SUCCESS
}
ocf_is_probe && {
iscsi_monitor; exit
}
exit $OCF_ERR_GENERIC
;;
3) ocf_is_probe && exit $OCF_NOT_RUNNING
[ "$__OCF_ACTION" = stop ] && {
iscsi_monitor || exit $OCF_SUCCESS
}
if ! is_iscsid_running; then
[ $setup_rc -eq 1 ] &&
ocf_log warning "iscsid.startup probably not correctly set in /etc/iscsi/iscsid.conf"
[ "$__OCF_ACTION" = stop ] && exit $OCF_SUCCESS
exit $OCF_ERR_INSTALLED
fi
exit $OCF_ERR_GENERIC
;;
esac
}
#
# NB: this is udev specific!
#
wait_for_udev() {
dev=/dev/disk/by-path/ip-$PORTAL-iscsi-$OCF_RESKEY_target
while :; do
ls $dev* >/dev/null 2>&1 && break
ocf_log warning "waiting for udev to create $dev"
sleep 1
done
}
iscsi_status() {
if $disk_status $OCF_RESKEY_target; then
return $OCF_SUCCESS
else
return $OCF_NOT_RUNNING
fi
}
iscsi_start() {
if iscsi_status; then
ocf_log info "iscsi $PORTAL $OCF_RESKEY_target already running"
return $OCF_SUCCESS
else
$add_disk $PORTAL $OCF_RESKEY_target ||
return $OCF_ERR_GENERIC
case "$OCF_RESKEY_udev" in
[Yy]es) wait_for_udev ||
return $OCF_ERR_GENERIC
;;
*) ;;
esac
if iscsi_status; then
return $OCF_SUCCESS
else
return $OCF_ERR_GENERIC
fi
fi
}
iscsi_stop() {
if iscsi_status; then
$remove_disk $OCF_RESKEY_target ||
return $OCF_ERR_GENERIC
if iscsi_status; then
return $OCF_ERR_GENERIC
else
return $OCF_SUCCESS
fi
else
ocf_log info "iscsi $OCF_RESKEY_target already stopped"
return $OCF_SUCCESS
fi
}
iscsi_monitor() {
if $disk_status $OCF_RESKEY_target; then
return $OCF_SUCCESS
else
return $OCF_NOT_RUNNING
fi
}
#
# 'main' starts here...
#
if [ $# -ne 1 ]; then
usage
exit $OCF_ERR_ARGS
fi
# These operations don't require OCF instance parameters to be set
case "$1" in
meta-data) meta_data
exit $OCF_SUCCESS;;
usage) usage
exit $OCF_SUCCESS;;
methods) iscsi_methods
exit $OCF_SUCCESS;;
esac
if [ x = "x$OCF_RESKEY_target" ]; then
ocf_log err "target parameter not set"
exit $OCF_ERR_CONFIGURED
fi
if [ x = "x$OCF_RESKEY_portal" ]; then
ocf_log err "portal parameter not set"
exit $OCF_ERR_CONFIGURED
fi
case `uname` in
Linux) setup=open_iscsi_setup
;;
*) ocf_log info "platform `uname` may not be supported"
setup=open_iscsi_setup
;;
esac
LSB_STATUS_STOPPED=3
$setup
setup_rc=$?
if [ $setup_rc -gt 1 ]; then
ocf_log info "iscsi initiator utilities not installed or not setup"
case "$1" in
stop) exit $OCF_SUCCESS;;
monitor) exit $OCF_NOT_RUNNING;;
status) exit $LSB_STATUS_STOPPED;;
*) exit $OCF_ERR_INSTALLED;;
esac
fi
if [ `id -u` != 0 ]; then
ocf_log err "$0 must be run as root"
exit $OCF_ERR_PERM
fi
-discovery_type=${OCF_RESKEY_discovery_type}
-disk_discovery
-
# which method was invoked?
case "$1" in
- start) iscsi_start
+ start)
+ discovery_type=${OCF_RESKEY_discovery_type}
+ disk_discovery
+ iscsi_start
;;
stop) iscsi_stop
;;
status) if iscsi_status
then
echo iscsi target $OCF_RESKEY_target running
exit $OCF_SUCCESS
else
echo iscsi target $OCF_RESKEY_target stopped
exit $OCF_NOT_RUNNING
fi
;;
monitor) iscsi_status
;;
validate-all) # everything already validated
# just exit successfully here.
exit $OCF_SUCCESS;;
*) iscsi_methods
exit $OCF_ERR_UNIMPLEMENTED;;
esac
#
# vim:tabstop=4:shiftwidth=4:textwidth=0:wrapmargin=0

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