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https://github.com/MariaDB/server.git
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91 lines
2.4 KiB
Bash
91 lines
2.4 KiB
Bash
#!/usr/bin/env bash
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set -ue
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# Copyright (C) 2017-2024 MariaDB
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# Copyright (C) 2010-2014 Codership Oy
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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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; see the file COPYING. If not, write to the
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# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
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# MA 02110-1335 USA.
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# This is a reference script for backup recovery state snapshot transfer.
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. $(dirname "$0")/wsrep_sst_common
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MAGIC_FILE="$DATA/backup_sst_complete"
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wait_previous_sst
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[ -f "$MAGIC_FILE" ] && rm -f "$MAGIC_FILE"
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if [ "$WSREP_SST_OPT_ROLE" = 'donor' ]
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then
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RC=0
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if [ $WSREP_SST_OPT_BYPASS -eq 0 ]; then
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FLUSHED="$DATA/tables_flushed"
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ERROR="$DATA/sst_error"
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[ -f "$FLUSHED" ] && rm -f "$FLUSHED"
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[ -f "$ERROR" ] && rm -f "$ERROR"
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echo 'flush tables'
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# Wait for :
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# (a) Tables to be flushed, AND
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# (b) Cluster state ID & wsrep_gtid_domain_id to be written to the file, OR
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# (c) ERROR file, in case flush tables operation failed.
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while [ ! -r "$FLUSHED" ] || \
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! grep -q -F ':' -- "$FLUSHED"
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do
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# Check whether ERROR file exists.
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if [ -f "$ERROR" ]; then
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# Flush tables operation failed.
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rm "$ERROR"
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exit 255
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fi
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sleep 0.2
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done
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STATE=$(cat "$FLUSHED")
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rm "$FLUSHED"
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else # BYPASS
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wsrep_log_info "Bypassing state dump."
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# Store donor's wsrep GTID (state ID) and wsrep_gtid_domain_id
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# (separated by a space).
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STATE="$WSREP_SST_OPT_GTID $WSREP_SST_OPT_GTID_DOMAIN_ID"
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fi
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echo 'continue' # now server can resume updating data
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echo "$STATE" > "$MAGIC_FILE"
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echo "done $STATE"
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else # joiner
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wsrep_log_error "Unsupported role: '$WSREP_SST_OPT_ROLE'"
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exit 22 # EINVAL
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fi
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wsrep_log_info "$WSREP_METHOD $WSREP_TRANSFER_TYPE completed on $WSREP_SST_OPT_ROLE"
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exit 0
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