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|
#!/usr/bin/env bash
set -ue
# Copyright (C) 2017-2024 MariaDB
# Copyright (C) 2010-2014 Codership Oy
#
# 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; version 2 of the License.
#
# 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; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
# MA 02110-1335 USA.
# This is a reference script for backup recovery state snapshot transfer.
. $(dirname "$0")/wsrep_sst_common
MAGIC_FILE="$DATA/backup_sst_complete"
wait_previous_sst
[ -f "$MAGIC_FILE" ] && rm -f "$MAGIC_FILE"
if [ "$WSREP_SST_OPT_ROLE" = 'donor' ]
then
RC=0
if [ $WSREP_SST_OPT_BYPASS -eq 0 ]; then
FLUSHED="$DATA/tables_flushed"
ERROR="$DATA/sst_error"
[ -f "$FLUSHED" ] && rm -f "$FLUSHED"
[ -f "$ERROR" ] && rm -f "$ERROR"
echo 'flush tables'
# Wait for :
# (a) Tables to be flushed, AND
# (b) Cluster state ID & wsrep_gtid_domain_id to be written to the file, OR
# (c) ERROR file, in case flush tables operation failed.
while [ ! -r "$FLUSHED" ] || \
! grep -q -F ':' -- "$FLUSHED"
do
# Check whether ERROR file exists.
if [ -f "$ERROR" ]; then
# Flush tables operation failed.
rm "$ERROR"
exit 255
fi
sleep 0.2
done
STATE=$(cat "$FLUSHED")
rm "$FLUSHED"
else # BYPASS
wsrep_log_info "Bypassing state dump."
# Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
# (separated by a space).
STATE="$WSREP_SST_OPT_GTID $WSREP_SST_OPT_GTID_DOMAIN_ID"
fi
echo 'continue' # now server can resume updating data
echo "$STATE" > "$MAGIC_FILE"
echo "done $STATE"
else # joiner
wsrep_log_error "Unsupported role: '$WSREP_SST_OPT_ROLE'"
exit 22 # EINVAL
fi
wsrep_log_info "$WSREP_METHOD $WSREP_TRANSFER_TYPE completed on $WSREP_SST_OPT_ROLE"
exit 0
|
