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  1. MariaDB Server
  2. MDEV-35387

wsrep_sst_rsync crash if aria_log_dir_path is defined

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    Description

      After update from 10.11.9 to 10.11.10 we observe problem with Rsync SST. It seems that there is a mass rewrite of wsrep_sst_common and if we use dedicated log dir for aria, Rsync SST method crash,

      aria_log_dir_path=/var/lib/mysql/logs
      		 
      datadir=/var/lib/mysql/data

      Problem is in function create_dirs in in wsrep_sst_common which is probably trapped somewhere on other exit code than 0. But if you use custom aria log dir, last exit code is 1 due to condition on line 1866

      [ $simplify -ne 0 -a "$ar_log_dir" = "$DATA_DIR" ] && ar_log_dir=""

      After it scripts flow go to simple_cleanup and exit. If you add on line below, for example echo "1", which has exit code 0, SST can continue and all work.

      Output from bash -x

      ....
      		 
      + '[' 0 -ne 0 -a /var/lib/mysql/logs = /var/lib/mysql/data ']'
      		 
      + simple_cleanup
      		 
      + local estatus=1
      		 
      + '[' 1 -ne 0 ']'
      		 
      + wsrep_log_error 'Cleanup after exit with status: 1'
      		 
      + wsrep_log '[ERROR] Cleanup after exit with status: 1'
      		 
      + local t
      		 
      + '[' Linux = Linux ']'
      		 
      ++ date '+%Y%m%d %H:%M:%S.%3N'
      		 
      + t='20241111 19:27:39.773'
      		 
      + echo 'WSREP_SST: [ERROR] Cleanup after exit with status: 1 (20241111 19:27:39.773)'
      		 
      WSREP_SST: [ERROR] Cleanup after exit with status: 1 (20241111 19:27:39.773)
      		 
      + '[' -n /var/lib/mysql/data/wsrep_sst.pid ']'
      		 
      ++ pwd
      		 
      + '[' /usr/bin '!=' /usr/bin ']'
      		 
      + '[' -f /var/lib/mysql/data/wsrep_sst.pid ']'
      		 
      + rm -f /var/lib/mysql/data/wsrep_sst.pid
      		 
      + exit 1'

      How to test:
      add different aria and data dir, eg.

      aria_log_dir_path=/var/lib/mysql/logs
      		 
      datadir=/var/lib/mysql/data

      an run rsync SST - problematic part is:.

      wsrep_sst_rsync --role 'joiner' --address '10.11.2.31' --datadir '/var/lib/mysql/data/' --parent 2603575 --progress 0 --binlog '/var/lib/mysql/logs/mysql-bin' --binlog-index '/var/lib/mysql/logs/mysql-bin.index' --mysqld-args --wsrep_start_position=00000000-0000-0000-0000-000000000000:-1,0-0-0

      If you need some more data, let me know.

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            sysprg Julius Goryavsky
            TM Tomas Merta
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              Updated:
              Resolved:

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