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samba-mirror/ctdb/config/ctdb-backup-persistent-tdbs.sh
Martin Schwenke 05da9001b9 ctdb-scripts: Add support for backing up persistent TDBs
Signed-off-by: Vinit Agnihotri <vagnihotri@ddn.com>
Signed-off-by: Martin Schwenke <mschwenke@ddn.com>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2024-08-29 22:48:33 +00:00

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#!/bin/sh
# Backup persistent CTDB TDBs into the given directory.
# Copyright: DataDirect Networks, 2024
# Authors: Vinit Agnihotri <vagnihotri@ddn.com>
# Martin Schwenke <mschwenke@ddn.com>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
# Options:
#
# -l: Only do the backup if this node is the leader node, otherwise
# exit with 0.
#
# -L <rc>: Only do the backup if this node is the leader node, otherwise
# exit with <rc>.
#
# Option/argument handling
#
die()
{
echo "ERROR: $1"
exit 1
}
usage()
{
die "usage: $0 [-l | -L <rc> ] <dir>"
}
leader_only=false
leader_only_rc=0
dir=""
while getopts "L:lh?" opt; do
case "$opt" in
L)
leader_only=true
leader_only_rc="$OPTARG"
;;
l)
leader_only=true
;;
\? | h)
usage
;;
esac
done
shift $((OPTIND - 1))
if [ $# -ne 1 ]; then
usage
fi
dir="$1"
if [ ! -d "$dir" ]; then
die "No such directory ${dir}"
fi
if $leader_only; then
this_node=$(ctdb pnn)
leader_node=$(ctdb leader)
if [ "$this_node" != "$leader_node" ]; then
exit "$leader_only_rc"
fi
fi
#
# Backups TDBs in timestamped subdirectory
#
dt=$(date "+%Y%m%d%H%M%S")
prefix="ctdb-persistent-db-backup-${dt}"
outdir="${dir}/${prefix}"
# Clean up temporary directory on failure"
trap 'rm -rf ${outdir}' 0
mkdir -p "$outdir"
if ! db_map=$(ctdb getdbmap -X); then
die "Failed to list databases"
fi
db_list=$(echo "$db_map" | awk -F '|' '$5 == "1" { print $3 }')
cd "$outdir" || die "Failed to change directory to ${dir}"
for db in $db_list; do
if ! ctdb backupdb "$db" "${db}.backup"; then
die "Failed to backup ${db}"
fi
done
#
# Create tarball
#
cd "$dir" || die "Failed to change directory to ${dir}"
tarball="${prefix}.tgz"
if ! tar -c -z -f "$tarball" "$prefix"; then
die "Failed to create tarball"
fi
echo "Created backup tarball ${dir}/${tarball}"
exit 0