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6330e2dc86
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460 lines
13 KiB
Bash
460 lines
13 KiB
Bash
#!/bin/bash
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#
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# Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
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#
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# This file is part of the lvm2 package.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
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# Edit an lvm.conf file to adjust various properties
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#
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# cluster with clvmd and/or locking lib?
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HANDLE_CLUSTER=0
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# cluster without clvmd?
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HANDLE_HALVM=0
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# also enable services appropriately (lvmetad, clvmd)?
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HANDLE_SERVICES=0
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# also enable cmirrord service in addition?
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HANDLE_MIRROR_SERVICE=0
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# also start/start services in addition to enabling/disabling them?
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START_STOP_SERVICES=0
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function usage
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{
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echo "Usage: $0 <command>"
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echo ""
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echo "Commands:"
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echo "Enable clvm: --enable-cluster [--lockinglibdir <dir>] [--lockinglib <lib>]"
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echo "Disable clvm: --disable-cluster"
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echo "Enable halvm: --enable-halvm"
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echo "Disable halvm: --disable-halvm"
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echo "Set locking library: --lockinglibdir <dir> [--lockinglib <lib>]"
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echo ""
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echo "Global options:"
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echo "Config file location: --file <configfile>"
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echo "Set services: --services [--mirrorservice] [--startstopservices]"
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echo ""
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echo "Use the separate command 'lvmconfig' to display configuration information"
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}
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function set_default_use_lvmetad_var
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{
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eval "$(lvm dumpconfig --type default global/use_lvmetad 2>/dev/null)"
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if [ "$?" != "0" ]; then
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USE_LVMETAD=0
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else
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USE_LVMETAD=$use_lvmetad
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fi
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}
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function parse_args
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{
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while [ -n "$1" ]; do
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case $1 in
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--enable-cluster)
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LOCKING_TYPE=3
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USE_LVMETAD=0
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HANDLE_CLUSTER=1
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shift
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;;
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--disable-cluster)
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LOCKING_TYPE=1
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set_default_use_lvmetad_var
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HANDLE_CLUSTER=1
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shift
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;;
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--enable-halvm)
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LOCKING_TYPE=1
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USE_LVMETAD=0
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HANDLE_HALVM=1
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shift
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;;
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--disable-halvm)
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LOCKING_TYPE=1
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set_default_use_lvmetad_var
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HANDLE_HALVM=1
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shift
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;;
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--lockinglibdir)
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if [ -n "$2" ]; then
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LOCKINGLIBDIR=$2
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shift 2
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else
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usage
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exit 1
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fi
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HANDLE_CLUSTER=1
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;;
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--lockinglib)
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if [ -n "$2" ]; then
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LOCKINGLIB=$2
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shift 2
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else
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usage
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exit 1
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fi
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HANDLE_CLUSTER=1
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;;
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--file)
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if [ -n "$2" ]; then
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CONFIGFILE=$2
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shift 2
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else
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usage
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exit 1
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fi
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;;
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--services)
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HANDLE_SERVICES=1
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shift
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;;
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--mirrorservice)
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HANDLE_MIRROR_SERVICE=1
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shift
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;;
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--startstopservices)
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START_STOP_SERVICES=1
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shift
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;;
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*)
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usage
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exit 1
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esac
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done
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if [ -n "$LOCKINGLIBDIR" ] || [ -n "$LOCKINGLIB" ]; then
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LOCKING_TYPE=2
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USE_LVMETAD=0
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fi
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}
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function validate_args
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{
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[ -z "$CONFIGFILE" ] && CONFIGFILE="/etc/lvm/lvm.conf"
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if [ ! -f "$CONFIGFILE" ]
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then
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echo "$CONFIGFILE does not exist"
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exit 10
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fi
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if [ "$HANDLE_CLUSTER" = 1 ] && [ "$HANDLE_HALVM" = 1 ]; then
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echo "Either HA LVM or cluster method may be used at one time"
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exit 18
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fi
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if [ "$HANDLE_SERVICES" = "0" ]; then
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if [ "$HANDLE_MIRROR_SERVICE" = "1" ]; then
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echo "--mirrorservice may be used only with --services"
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exit 19
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fi
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if [ "$START_STOP_SERVICES" = "1" ]; then
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echo "--startstopservices may be used only with --services"
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exit 19
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fi
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fi
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if [ -z "$LOCKING_TYPE" ] && [ -z "$LOCKINGLIBDIR" ]; then
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usage
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exit 1
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fi
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if [ -n "$LOCKINGLIBDIR" ]; then
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if [ "${LOCKINGLIBDIR:0:1}" != "/" ]
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then
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echo "Prefix must be an absolute path name (starting with a /)"
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exit 12
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fi
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if [ -n "$LOCKINGLIB" ] && [ ! -f "$LOCKINGLIBDIR/$LOCKINGLIB" ]
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then
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echo "$LOCKINGLIBDIR/$LOCKINGLIB does not exist, did you do a \"make install\" ?"
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exit 11
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fi
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fi
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if [ "$LOCKING_TYPE" = 1 ] ; then
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if [ -n "$LOCKINGLIBDIR" ] || [ -n "$LOCKINGLIB" ]; then
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echo "Superfluous locking lib parameter, ignoring"
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fi
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fi
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}
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umask 0077
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parse_args "$@"
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validate_args
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SCRIPTFILE=/etc/lvm/.lvmconf-script.tmp
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TMPFILE=/etc/lvm/.lvmconf-tmp.tmp
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# Flags so we know which parts of the file we can replace and which need
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# adding. These are return codes from grep, so zero means it IS present!
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have_type=1
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have_dir=1
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have_library=1
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have_use_lvmetad=1
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have_global=1
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grep -q '^[[:blank:]]*locking_type[[:blank:]]*=' $CONFIGFILE
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have_type=$?
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grep -q '^[[:blank:]]*library_dir[[:blank:]]*=' $CONFIGFILE
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have_dir=$?
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grep -q '^[[:blank:]]*locking_library[[:blank:]]*=' $CONFIGFILE
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have_library=$?
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grep -q '^[[:blank:]]*use_lvmetad[[:blank:]]*=' $CONFIGFILE
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have_use_lvmetad=$?
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# Those options are in section "global {" so we must have one if any are present.
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if [ "$have_type" = 0 ] || [ "$have_dir" = 0 ] || [ "$have_library" = 0 ] || [ "$have_use_lvmetad" = 0 ]
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then
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# See if we can find it...
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grep -q '^[[:blank:]]*global[[:blank:]]*{' $CONFIGFILE
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have_global=$?
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if [ "$have_global" = "1" ]
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then
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echo "global keys but no 'global {' found, can't edit file"
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exit 13
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fi
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fi
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if [ "$LOCKING_TYPE" = "2" ] && [ -z "$LOCKINGLIBDIR" ] && [ "$have_dir" = "1" ]; then
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echo "no library_dir specified in $CONFIGFILE"
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exit 16
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fi
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# So if we don't have "global {" we need to create one and
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# populate it
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if [ "$have_global" = "1" ]
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then
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if [ -z "$LOCKING_TYPE" ]; then
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LOCKING_TYPE=1
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fi
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if [ "$LOCKING_TYPE" = "3" ] || [ "$LOCKING_TYPE" = "2" ]; then
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cat $CONFIGFILE - <<EOF > $TMPFILE
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global {
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# Enable locking for cluster LVM
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locking_type = $LOCKING_TYPE
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library_dir = "$LOCKINGLIBDIR"
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# Disable lvmetad in cluster
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use_lvmetad = 0
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EOF
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if [ $? != 0 ]
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then
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echo "failed to create temporary config file, $CONFIGFILE not updated"
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exit 14
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fi
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if [ -n "$LOCKINGLIB" ]; then
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cat - <<EOF >> $TMPFILE
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locking_library = "$LOCKINGLIB"
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EOF
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if [ $? != 0 ]
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then
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echo "failed to create temporary config file, $CONFIGFILE not updated"
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exit 16
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fi
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fi
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cat - <<EOF >> $TMPFILE
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}
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EOF
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fi # if we aren't setting cluster locking, we don't need to create a global section
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if [ $? != 0 ]
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then
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echo "failed to create temporary config file, $CONFIGFILE not updated"
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exit 17
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fi
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else
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#
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# We have a "global {" section, so add or replace the
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# locking entries as appropriate
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#
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if [ -n "$LOCKING_TYPE" ]; then
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if [ "$have_type" = "0" ]
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then
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SEDCMD=" s/^[[:blank:]]*locking_type[[:blank:]]*=.*/\ \ \ \ locking_type = $LOCKING_TYPE/g"
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else
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SEDCMD=" /global[[:blank:]]*{/a\ \ \ \ locking_type = $LOCKING_TYPE"
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fi
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fi
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if [ -n "$LOCKINGLIBDIR" ]; then
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if [ "$have_dir" = "0" ]
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then
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SEDCMD="${SEDCMD}\ns'^[[:blank:]]*library_dir[[:blank:]]*=.*'\ \ \ \ library_dir = \"$LOCKINGLIBDIR\"'g"
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else
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SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ library_dir = \"$LOCKINGLIBDIR\""
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fi
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fi
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if [ -n "$LOCKINGLIB" ]; then
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if [ "$have_library" = "0" ]
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then
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SEDCMD="${SEDCMD}\ns/^[[:blank:]]*locking_library[[:blank:]]*=.*/\ \ \ \ locking_library = \"$LOCKINGLIB\"/g"
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else
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SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ locking_library = \"$LOCKINGLIB\""
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fi
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fi
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if [ "$have_use_lvmetad" = "0" ]
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then
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SEDCMD="${SEDCMD}\ns'^[[:blank:]]*use_lvmetad[[:blank:]]*=.*'\ \ \ \ use_lvmetad = $USE_LVMETAD'g"
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else
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SEDCMD="${SEDCMD}\n/global[[:blank:]]*{/a\ \ \ \ use_lvmetad = $USE_LVMETAD"
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fi
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echo -e "$SEDCMD" > "$SCRIPTFILE"
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sed <"$CONFIGFILE" >"$TMPFILE" -f "$SCRIPTFILE"
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if [ $? != 0 ]
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then
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echo "sed failed, $CONFIGFILE not updated"
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exit 15
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fi
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fi
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# Now we have a suitably editted config file in a temp place,
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# backup the original and copy our new one into place.
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cp "$CONFIGFILE" "$CONFIGFILE.lvmconfold"
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if [ $? != 0 ]
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then
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echo "failed to backup old config file, $CONFIGFILE not updated"
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exit 2
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fi
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cp "$TMPFILE" "$CONFIGFILE"
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if [ $? != 0 ]
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then
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echo "failed to copy new config file into place, check $CONFIGFILE is still OK"
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exit 3
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fi
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rm -f "$SCRIPTFILE" "$TMPFILE"
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function set_service {
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local type="$1"
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local action="$2"
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shift 2
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if [ "$type" = "systemd" ]; then
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if [ "$action" = "activate" ]; then
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for i in "$@"; do
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unset LoadState
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eval "$($SYSTEMCTL_BIN show "$i" -p LoadState 2>/dev/null)"
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test "$LoadState" = "loaded" || continue
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$SYSTEMCTL_BIN enable "$i"
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if [ "$START_STOP_SERVICES" = "1" ]; then
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$SYSTEMCTL_BIN start "$i"
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fi
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done
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elif [ "$action" = "deactivate" ]; then
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for i in "$@"; do
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unset LoadState
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eval "$($SYSTEMCTL_BIN show "$i" -p LoadState 2>/dev/null)"
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test "$LoadState" = "loaded" || continue
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$SYSTEMCTL_BIN disable "$i"
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if [ "$START_STOP_SERVICES" = "1" ]; then
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$SYSTEMCTL_BIN stop "$i"
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fi
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done
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fi
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elif [ "$type" = "sysv" ]; then
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if [ "$action" = "activate" ]; then
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for i in "$@"; do
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$CHKCONFIG_BIN --list "$i" > /dev/null || continue
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$CHKCONFIG_BIN "$i" on
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if [ "$START_STOP_SERVICES" = "1" ]; then
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$SERVICE_BIN "$i" start
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fi
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done
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elif [ "$action" = "deactivate" ]; then
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for i in "$@"; do
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$CHKCONFIG_BIN --list "$i" > /dev/null || continue
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if [ "$START_STOP_SERVICES" = "1" ]; then
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$SERVICE_BIN "$i" stop
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fi
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$CHKCONFIG_BIN "$i" off
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done
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fi
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fi
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}
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# Start/stop and enable/disable services if needed.
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if [ "$HANDLE_SERVICES" == "1" ]; then
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SYSTEMCTL_BIN=$(which systemctl 2>/dev/null)
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CHKCONFIG_BIN=$(which chkconfig 2>/dev/null)
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SERVICE_BIN=$(which service 2>/dev/null)
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# Systemd services
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if [ -n "$SYSTEMCTL_BIN" ]; then
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if [ "$USE_LVMETAD" = "0" ]; then
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set_service systemd deactivate lvm2-lvmetad.service lvm2-lvmetad.socket
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else
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set_service systemd activate lvm2-lvmetad.socket
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fi
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if [ "$LOCKING_TYPE" = "3" ]; then
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set_service systemd activate lvm2-cluster-activation.service
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if [ "$HANDLE_MIRROR_SERVICE" = "1" ]; then
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set_service activate lvm2-cmirrord.service
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fi
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else
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set_service systemd deactivate lvm2-cluster-activation.service
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if [ "$HANDLE_MIRROR_SERVICE" = "1" ]; then
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set_service systemd deactivate lvm2-cmirrord.service
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fi
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fi
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# System V init scripts
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elif [ -n "$SERVICE_BIN" ] && [ -n "$CHKCONFIG_BIN" ]; then
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if [ "$USE_LVMETAD" = "0" ]; then
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set_service sysv deactivate lvm2-lvmetad
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else
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set_service sysv activate lvm2-lvmetad
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fi
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if [ "$LOCKING_TYPE" = "3" ]; then
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set_service sysv activate clvmd
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if [ "$HANDLE_MIRROR_SERVICE" = "1" ]; then
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set_service sysv activate cmirrord
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fi
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else
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set_service sysv deactivate clvmd
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if [ "$HANDLE_MIRROR_SERVICE" = "1" ]; then
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set_service sysv deactivate cmirrord
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fi
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fi
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# None of the service tools found, error out
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else
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echo "Missing tools to handle services"
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exit 20
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fi
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fi
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