diff options
Diffstat (limited to 'ctdb/config/events/legacy/00.ctdb')
-rwxr-xr-x | ctdb/config/events/legacy/00.ctdb | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/ctdb/config/events/legacy/00.ctdb b/ctdb/config/events/legacy/00.ctdb new file mode 100755 index 00000000000..8db4a19d184 --- /dev/null +++ b/ctdb/config/events/legacy/00.ctdb @@ -0,0 +1,157 @@ +#!/bin/sh + +# Event script for ctdb-specific setup and other things that don't fit +# elsewhere. + +[ -n "$CTDB_BASE" ] || \ + CTDB_BASE=$(d=$(dirname "$0") ; cd -P "$d" ; dirname "$PWD") + +. "${CTDB_BASE}/functions" + +load_script_options + +############################################################ + +# type is commonly supported and more portable than which(1) +# shellcheck disable=SC2039 +select_tdb_checker () +{ + # Find the best TDB consistency check available. + use_tdb_tool_check=false + type tdbtool >/dev/null 2>&1 && found_tdbtool=true + type tdbdump >/dev/null 2>&1 && found_tdbdump=true + + if $found_tdbtool && echo "help" | tdbtool | grep -q check ; then + use_tdb_tool_check=true + elif $found_tdbtool && $found_tdbdump ; then + cat <<EOF +WARNING: The installed 'tdbtool' does not offer the 'check' subcommand. + Using 'tdbdump' for database checks. + Consider updating 'tdbtool' for better checks! +EOF + elif $found_tdbdump ; then + cat <<EOF +WARNING: 'tdbtool' is not available. + Using 'tdbdump' to check the databases. + Consider installing a recent 'tdbtool' for better checks! +EOF + else + cat <<EOF +WARNING: Cannot check databases since neither + 'tdbdump' nor 'tdbtool check' is available. + Consider installing tdbtool or at least tdbdump! +EOF + return 1 + fi +} + +check_tdb () +{ + _db="$1" + + if $use_tdb_tool_check ; then + # tdbtool always exits with 0 :-( + if timeout 10 tdbtool "$_db" check 2>/dev/null | + grep -q "Database integrity is OK" ; then + return 0 + else + return 1 + fi + else + timeout 10 tdbdump "$_db" >/dev/null 2>/dev/null + return $? + fi +} + +check_persistent_databases () +{ + _dir="${CTDB_DBDIR_PERSISTENT:-${CTDB_VARDIR}/persistent}" + [ -d "$_dir" ] || return 0 + + for _db in "$_dir/"*.tdb.*[0-9] ; do + [ -r "$_db" ] || continue + check_tdb "$_db" || \ + die "Persistent database $_db is corrupted! CTDB will not start." + done +} + +check_non_persistent_databases () +{ + _dir="${CTDB_DBDIR:-${CTDB_VARDIR}}" + [ -d "$_dir" ] || return 0 + + for _db in "${_dir}/"*.tdb.*[0-9] ; do + [ -r "$_db" ] || continue + check_tdb "$_db" || { + _backup="${_db}.$(date +'%Y%m%d.%H%M%S.%N').corrupt" + cat <<EOF +WARNING: database ${_db} is corrupted. + Moving to backup ${_backup} for later analysis. +EOF + mv "$_db" "$_backup" + + # Now remove excess backups + _max="${CTDB_MAX_CORRUPT_DB_BACKUPS:-10}" + _bdb="${_db##*/}" # basename + find "$_dir" -name "${_bdb}.*.corrupt" | + sort -r | + tail -n +$((_max + 1)) | + xargs rm -f + } + done +} + +set_ctdb_variables () +{ + _f="${CTDB_BASE}/ctdb.tunables" + if [ ! -r "$_f" ] ; then + return + fi + + while IFS="=" read _var _val ; do + case "$_var" in + \#*|"") continue ;; + esac + + if $CTDB setvar "$_var" "$_val" ; then + echo "Set $_var to $_val" + else + echo "Invalid tunable: ${_var}=${_val}" + return 1 + fi + done <"$_f" +} + +############################################################ + +ctdb_check_args "$@" + +case "$1" in +init) + # make sure we have a blank state directory for the scripts to work with + rm -rf "$CTDB_SCRIPT_VARDIR" + mkdir -p "$CTDB_SCRIPT_VARDIR" || \ + die "mkdir -p ${CTDB_SCRIPT_VARDIR} - failed - $?" $? + + # Load/cache database options from configuration file + ctdb_get_db_options + + if select_tdb_checker ; then + check_persistent_databases || exit $? + check_non_persistent_databases + fi + ;; + +setup) + # Set any tunables from the config file + set_ctdb_variables || \ + die "Aborting setup due to invalid configuration - fix typos, remove unknown tunables" + ;; + +startup) + $CTDB attach ctdb.tdb persistent + ;; +esac + +# all OK +exit 0 |