Add cluster support.

1 files changed, 154 insertions, 0 deletions

diff --git a/scripts/clvmd_fix_conf.sh b/scripts/clvmd_fix_conf.sh
new file mode 100644
index 00000000..9e363d52
--- /dev/null
+++ b/scripts/clvmd_fix_conf.sh
@@ -0,0 +1,154 @@
+#!/bin/sh
+#
+# Edit an lvm.conf file to enable cluster locking.
+#
+# $1 is the directory where the locking library is installed.
+# $2 (optional) is the config file
+# $3 (optional) is the locking library name
+#
+#
+PREFIX=$1
+LVMCONF=$2
+LIB=$3
+
+if [ -z "$PREFIX" ]
+then
+  echo "usage: $0 <prefix> [<config file>] [<library>]"
+  echo ""
+  echo "<prefix>      location of the cluster locking shared library. (no default)"
+  echo "<config file> name of the LVM config file (default: /etc/lvm/lvm.conf)"
+  echo "<library>     name of the shared library (default: liblvm2clusterlock.so)"
+  echo ""
+  exit 0
+fi
+
+[ -z "$LVMCONF" ] && LVMCONF="/etc/lvm/lvm.conf"
+[ -z "$LIB" ] && LIB="liblvm2clusterlock.so"
+
+if [ "${PREFIX:0:1}" != "/" ]
+then
+  echo "Prefix must be an absolute path name (starting with a /)"
+  exit 12
+fi
+
+if [ ! -f "$LVMCONF" ]
+then
+  echo "$LVMCONF does not exist"
+  exit 10
+fi
+
+if [ ! -f "$PREFIX/$LIB" ]
+then
+  echo "$PREFIX/$LIB does not exist, did you do a \"make install\" ?"
+  exit 11
+fi
+
+
+SCRIPTFILE=`mktemp -t lvmscript.XXXXXXXXXX`
+TMPFILE=`mktemp -t lvmtmp.XXXXXXXXXX`
+
+
+# Flags so we know which parts of the file we can replace and which need
+# adding. These are return codes from grep, so zero means it IS present!
+have_type=1
+have_dir=1
+have_library=1
+have_global=1
+
+grep -q '^[[:blank:]]*locking_type[[:blank:]]*=' $LVMCONF
+have_type=$?
+
+grep -q '^[[:blank:]]*library_dir[[:blank:]]*=' $LVMCONF
+have_dir=$?
+
+grep -q '^[[:blank:]]*locking_library[[:blank:]]*=' $LVMCONF
+have_library=$?
+
+# Those options are in section "global {" so we must have one if any are present.
+if [ "$have_type" = "0" -o "$have_dir" = "0" -o "$have_library" = "0" ]
+then
+
+    # See if we can find it...
+    grep -q '^[[:blank:]]*global[[:blank:]]*{' $LVMCONF
+    have_global=$?
+    
+    if [ "$have_global" = "1" ] 
+	then
+	echo "global keys but no 'global {' found, can't edit file"
+	exit 12
+    fi
+fi
+
+# So if we don't have "global {" we need to create one and 
+# populate it
+
+if [ "$have_global" = "1" ]
+then
+    cat $LVMCONF - <<EOF > $TMPFILE
+global {
+    # Enable locking for cluster LVM
+    locking_type = 2
+    library_dir = "$PREFIX"
+    locking_library = "$LIB"
+}
+EOF
+    if [ $? != 0 ]
+    then
+	echo "failed to create temporary config file, $LVMCONF not updated"
+	exit 1
+    fi
+else
+    #
+    # We have a "global {" section, so add or replace the
+    # locking entries as appropriate
+    #
+
+    if [ "$have_type" = "0" ] 
+    then
+	SEDCMD=" s/^[[:blank:]]*locking_type[[:blank:]]*=.*/\ \ \ \ locking_type = 2/g"
+    else
+	SEDCMD=" /global[[:blank:]]*{/a\ \ \ \ locking_type = 2"
+    fi
+    
+    if [ "$have_dir" = "0" ] 
+    then
+	SEDCMD="${SEDCMD}\ns'^[[:blank:]]*library_dir[[:blank:]]*=.*'\ \ \ \ library_dir = \"$PREFIX\"'g"
+    else
+	SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ library_dir = \"$PREFIX\""
+    fi
+
+    if [ "$have_library" = "0" ] 
+    then
+	SEDCMD="${SEDCMD}\ns/^[[:blank:]]*locking_library[[:blank:]]*=.*/\ \ \ \ locking_library = \"$LIB\"/g"
+    else
+	SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ locking_library = \"$LIB\""
+    fi
+
+    echo -e $SEDCMD > $SCRIPTFILE
+    sed  <$LVMCONF >$TMPFILE -f $SCRIPTFILE
+    if [ $? != 0 ]
+    then
+	echo "sed failed, $LVMCONF not updated"
+	exit 1
+    fi
+fi
+
+# Now we have a suitably editted config file in a temp place,
+# backup the original and copy our new one into place.
+
+cp $LVMCONF $LVMCONF.nocluster
+if [ $? != 0 ]
+    then
+    echo "failed to backup old config file, $LVMCONF not updated"
+    exit 2
+fi
+
+cp $TMPFILE $LVMCONF
+if [ $? != 0 ]
+    then
+    echo "failed to copy new config file into place, check $LVMCONF is still OK"
+    exit 3
+fi
+
+rm -f $SCRIPTFILE $TMPFILE
+