/sbin/lvmconf is in lvm2 2.02.111-2.2+deb8u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 | #!/bin/bash
#
# Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
#
# This file is part of the lvm2 package.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Edit an lvm.conf file to adjust various properties
#
DEFAULT_USE_LVMETAD=0
function usage
{
echo "usage: $0 <command>"
echo ""
echo "Commands:"
echo "Enable clvm: --enable-cluster [--lockinglibdir <dir>] [--lockinglib <lib>]"
echo "Disable clvm: --disable-cluster"
echo "Set locking library: --lockinglibdir <dir> [--lockinglib <lib>]"
echo ""
echo "Global options:"
echo "Config file location: --file <configfile>"
echo ""
}
function parse_args
{
while [ -n "$1" ]; do
case $1 in
--enable-cluster)
LOCKING_TYPE=3
USE_LVMETAD=0
shift
;;
--disable-cluster)
LOCKING_TYPE=1
USE_LVMETAD=$DEFAULT_USE_LVMETAD
shift
;;
--lockinglibdir)
if [ -n "$2" ]; then
LOCKINGLIBDIR=$2
shift 2
else
usage
exit 1
fi
;;
--lockinglib)
if [ -n "$2" ]; then
LOCKINGLIB=$2
shift 2
else
usage
exit 1
fi
;;
--file)
if [ -n "$2" ]; then
CONFIGFILE=$2
shift 2
else
usage
exit 1
fi
;;
*)
usage
exit 1
esac
done
}
function validate_args
{
[ -z "$CONFIGFILE" ] && CONFIGFILE="/etc/lvm/lvm.conf"
if [ ! -f "$CONFIGFILE" ]
then
echo "$CONFIGFILE does not exist"
exit 10
fi
if [ -z "$LOCKING_TYPE" ] && [ -z "$LOCKINGLIBDIR" ]; then
usage
exit 1
fi
if [ -n "$LOCKINGLIBDIR" ]; then
if [ "${LOCKINGLIBDIR:0:1}" != "/" ]
then
echo "Prefix must be an absolute path name (starting with a /)"
exit 12
fi
if [ -n "$LOCKINGLIB" ] && [ ! -f "$LOCKINGLIBDIR/$LOCKINGLIB" ]
then
echo "$LOCKINGLIBDIR/$LOCKINGLIB does not exist, did you do a \"make install\" ?"
exit 11
fi
fi
if [ "$LOCKING_TYPE" = "1" ] && [ -n "$LOCKINGLIBDIR" -o -n "$LOCKINGLIB" ]; then
echo "Superfluous locking lib parameter, ignoring"
fi
}
umask 0077
parse_args "$@"
validate_args
SCRIPTFILE=/etc/lvm/.lvmconf-script.tmp
TMPFILE=/etc/lvm/.lvmconf-tmp.tmp
# 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_use_lvmetad=1
have_global=1
grep -q '^[[:blank:]]*locking_type[[:blank:]]*=' $CONFIGFILE
have_type=$?
grep -q '^[[:blank:]]*library_dir[[:blank:]]*=' $CONFIGFILE
have_dir=$?
grep -q '^[[:blank:]]*locking_library[[:blank:]]*=' $CONFIGFILE
have_library=$?
grep -q '^[[:blank:]]*use_lvmetad[[:blank:]]*=' $CONFIGFILE
have_use_lvmetad=$?
# Those options are in section "global {" so we must have one if any are present.
if [ "$have_type" = "0" -o "$have_dir" = "0" -o "$have_library" = "0" -o "$have_use_lvmetad" = "0" ]
then
# See if we can find it...
grep -q '^[[:blank:]]*global[[:blank:]]*{' $CONFIGFILE
have_global=$?
if [ "$have_global" = "1" ]
then
echo "global keys but no 'global {' found, can't edit file"
exit 13
fi
fi
if [ "$LOCKING_TYPE" = "2" ] && [ -z "$LOCKINGLIBDIR" ] && [ "$have_dir" = "1" ]; then
echo "no library_dir specified in $CONFIGFILE"
exit 16
fi
# So if we don't have "global {" we need to create one and
# populate it
if [ "$have_global" = "1" ]
then
if [ -z "$LOCKING_TYPE" ]; then
LOCKING_TYPE=1
fi
if [ "$LOCKING_TYPE" = "3" ] || [ "$LOCKING_TYPE" = "2" ]; then
cat $CONFIGFILE - <<EOF > $TMPFILE
global {
# Enable locking for cluster LVM
locking_type = $LOCKING_TYPE
library_dir = "$LOCKINGLIBDIR"
# Disable lvmetad in cluster
use_lvmetad = 0
EOF
if [ $? != 0 ]
then
echo "failed to create temporary config file, $CONFIGFILE not updated"
exit 14
fi
if [ -n "$LOCKINGLIB" ]; then
cat - <<EOF >> $TMPFILE
locking_library = "$LOCKINGLIB"
EOF
if [ $? != 0 ]
then
echo "failed to create temporary config file, $CONFIGFILE not updated"
exit 16
fi
fi
cat - <<EOF >> $TMPFILE
}
EOF
fi # if we aren't setting cluster locking, we don't need to create a global section
if [ $? != 0 ]
then
echo "failed to create temporary config file, $CONFIGFILE not updated"
exit 17
fi
else
#
# We have a "global {" section, so add or replace the
# locking entries as appropriate
#
if [ -n "$LOCKING_TYPE" ]; then
if [ "$have_type" = "0" ]
then
SEDCMD=" s/^[[:blank:]]*locking_type[[:blank:]]*=.*/\ \ \ \ locking_type = $LOCKING_TYPE/g"
else
SEDCMD=" /global[[:blank:]]*{/a\ \ \ \ locking_type = $LOCKING_TYPE"
fi
fi
if [ -n "$LOCKINGLIBDIR" ]; then
if [ "$have_dir" = "0" ]
then
SEDCMD="${SEDCMD}\ns'^[[:blank:]]*library_dir[[:blank:]]*=.*'\ \ \ \ library_dir = \"$LOCKINGLIBDIR\"'g"
else
SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ library_dir = \"$LOCKINGLIBDIR\""
fi
fi
if [ -n "$LOCKINGLIB" ]; then
if [ "$have_library" = "0" ]
then
SEDCMD="${SEDCMD}\ns/^[[:blank:]]*locking_library[[:blank:]]*=.*/\ \ \ \ locking_library = \"$LOCKINGLIB\"/g"
else
SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ locking_library = \"$LOCKINGLIB\""
fi
fi
if [ "$have_use_lvmetad" = "0" ]
then
SEDCMD="${SEDCMD}\ns'^[[:blank:]]*use_lvmetad[[:blank:]]*=.*'\ \ \ \ use_lvmetad = $USE_LVMETAD'g"
else
SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ use_lvmetad = $USE_LVMETAD"
fi
echo -e $SEDCMD > $SCRIPTFILE
sed <$CONFIGFILE >$TMPFILE -f $SCRIPTFILE
if [ $? != 0 ]
then
echo "sed failed, $CONFIGFILE not updated"
exit 15
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 $CONFIGFILE $CONFIGFILE.lvmconfold
if [ $? != 0 ]
then
echo "failed to backup old config file, $CONFIGFILE not updated"
exit 2
fi
cp $TMPFILE $CONFIGFILE
if [ $? != 0 ]
then
echo "failed to copy new config file into place, check $CONFIGFILE is still OK"
exit 3
fi
rm -f $SCRIPTFILE $TMPFILE
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