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git://sourceware.org/git/lvm2.git
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3f0434057b
'lvm dumpconfig' now does a lot more than just dumping configuration information and is no longer only a support tool. Users now need to run it to find out about configuration information that has been removed from the lvm.conf man page so we need to promote this to full command line status as 'lvmconfig'. Also accept 'lvm config' and mention it in the usage information of lvmconf (which should also get merged in eventually).
451 lines
12 KiB
Bash
451 lines
12 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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=$2
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shift 2
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else
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usage
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exit 1
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fi
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;;
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--services)
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HANDLE_SERVICES=1
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shift
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;;
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--mirrorservice)
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HANDLE_MIRROR_SERVICE=1
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shift
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;;
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--startstopservices)
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START_STOP_SERVICES=1
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shift
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;;
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*)
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usage
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exit 1
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esac
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done
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}
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function validate_args
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{
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[ -z "$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 [ "$HANDLE_CLUSTER" = "1" -a "$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 [ "$LOCKING_TYPE" = "1" ] && [ -n "$LOCKINGLIBDIR" -o -n "$LOCKINGLIB" ]; then
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echo "Superfluous locking lib parameter, ignoring"
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fi
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}
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umask 0077
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parse_args "$@"
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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 [ "$have_type" = "0" -o "$have_dir" = "0" -o "$have_library" = "0" -o "$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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eval $($SYSTEMCTL_BIN show $i -p LoadState)
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test "$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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eval $($SYSTEMCTL_BIN show $i -p LoadState)
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test "$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 [ "$HANDLE_CMIRROR_SERVICE" ]; then
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set_service activate lvm2-cmirrord.service
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fi
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else
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set_service systemd deactivate lvm2-cluster-activation.service
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if [ "$HANDLE_CMIRROR_SERVICE" ]; 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 "$SERVICE_BIN" -a -n "$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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