1 files changed, 78 insertions, 0 deletions
diff --git a/os-plugins/plugins/xen/files/xen.examples/scripts/block-iscsi b/os-plugins/plugins/xen/files/xen.examples/scripts/block-iscsi
new file mode 100755
index 00000000..f473a0a9
--- /dev/null
+++ b/os-plugins/plugins/xen/files/xen.examples/scripts/block-iscsi
@@ -0,0 +1,78 @@
+#!/bin/bash
+
+# Usage: block-iscsi [add tgtname | remove dev]
+#
+# This assumes you're running a correctly configured 
+# iscsi target (server) at the other end!
+# Note that we assume that the passwords for discovery (if needed)
+# are in /etc/iscsid.conf
+# and the node session passwords (if required) in the
+# open-iscsi database below /var/lib/open-iscsi/node.db
+#
+# (c) Kurt Garloff <kurt@garloff.de>, 2006-09-04, GNU GPL
+# Contributors: Jim Fehlig <jfehlig@novell.com>
+#               Stefan de Konink <skinkie@xs4all.nl>
+
+dir=$(dirname "$0")
+. "$dir/block-common.sh"
+
+# echo "DBG:xen/scripts/block-iscsi $1 $2 XENBUS_PATH=$XENBUS_PATH $par $node"
+
+find_sdev()
+{
+  unset dev
+  for session in /sys/class/iscsi_session/session*; do
+    if [ "$1" = "`cat $session/targetname`" ]; then
+      dev=`basename $session/device/target*/*:0:*/block*/*`
+      return
+    fi
+  done
+}
+
+find_sdev_rev()
+{
+  unset tgt
+  for session in /sys/class/iscsi_session/session*; do
+    dev=`basename $session/device/target*/*:0:*/block*/*`
+    if [ "$dev" = "$1" ]; then
+      tgt=`cat $session/targetname`
+      return
+    fi
+  done
+}
+
+case "$command" in
+  add)
+    # load modules and start iscsid
+    /etc/init.d/open-iscsi status >/dev/null 2>&1 ||
+      { /etc/init.d/open-iscsi start >/dev/null 2>&1; sleep 1; }
+    # list of targets on node
+    /sbin/iscsiadm -m discovery | sed "s/ .*//g" | while read line; do /sbin/iscsiadm -m discovery -t sendtargets -p $line; done >/dev/null
+    par=`xenstore-read $XENBUS_PATH/params` || true
+    TGTID=`echo $par | sed "s/\/\///g"`
+    while read rec uuid; do
+      if [ "$uuid" = "$TGTID" ]; then
+        find_sdev $TGTID
+        if [ -z "$dev" ]; then
+          /sbin/iscsiadm -m node -T $uuid -p $rec --login || exit 2
+          sleep 4
+          find_sdev $TGTID
+        fi
+        xenstore-write $XENBUS_PATH/node /dev/$dev
+        write_dev /dev/$dev
+        exit 0
+      fi
+    done < <(/sbin/iscsiadm -m node)
+    exit 1
+    ;;
+
+  remove)
+    node=`xenstore-read $XENBUS_PATH/node` || true
+    dev=$node; dev=${dev#/dev/}
+    find_sdev_rev $dev
+    if [ -x /sbin/blockdev -a -n "$node" ];  then blockdev --flushbufs "$node"; fi
+    test -z "$tgt" && exit 2
+    /sbin/iscsiadm -m node -T $tgt --logout
+    exit 1
+    ;;
+esac