addIscsiDisk: added script

the addIscsiDisk script adds the required config for a new iscsi
disk and tries to live upgrade the iete daemon to exporting the disk

1 files changed, 43 insertions, 0 deletions

diff --git a/addIscsiDisk b/addIscsiDisk
new file mode 100755
index 0000000..1bda195
--- /dev/null
+++ b/addIscsiDisk
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+lvname=$(basename $1)
+if [ -z "${lvname}" -o ! -b "/dev/scsiRaid/${lvname}" ]; then
+	echo "Usage: $0 <lvname>"
+	exit 1
+fi
+
+# check if disk exists in config
+if grep -qs "Path=/dev/scsiRaid/${lvname},Type=diskio" /etc/iet/ietd.conf ; then
+	echo "Disk is already in config file. Not adding it again." >&2
+else
+	echo -n "Adding disk to 'ietd.conf' config file... " >&2
+	cat <<EOF >> /etc/iet/ietd.conf
+
+Target iqn.2011-04.de.spline:${lvname}
+	Lun 0 Path=/dev/scsiRaid/${lvname},Type=diskio,ScsiId=1,ScsiSN=2
+EOF
+	echo "Done." >&2
+fi
+
+if [ -r /proc/net/iet/volume ]; then
+	if grep -qs "path:/dev/scsiRaid/${lvname}$" /proc/net/iet/volume ; then
+		echo "Disk is already configured in ietd. Skipping live update." >&2
+	else
+		# get the next avilable tid
+		tid=$(awk '$1 ~ /tid:/ {      \
+		          gsub(/tid:/,"",$1); \
+	        	  if ( max < $1 ) {   \
+		              max=$1          \
+		          }                   \
+		      }                       \
+		                              \
+		      END { print max+1 }' /proc/net/iet/volume)
+
+		echo -n "Adding disk to running ietd... " >&2
+		ietadm --op new --tid=${tid} --params "Name=iqn.2011-04.de.spline:${lvname}"
+		ietadm --op new --tid=${tid} --lun=0 --params "Path=/dev/scsiRaid/${lvname},Type=diskio,ScsiId=1,ScsiSN=2"
+		echo "Done." >&2
+	fi
+else
+	echo "ietd not running. Skipping live update." >&2
+fi