1. 26 Oct, 2022 14 commits
  2. 25 Oct, 2022 1 commit
    • Thirunarayanan Balathandayuthapani's avatar
      MDEV-19229 Allow innodb_undo_tablespaces to be changed after database creation · baf276e6
      Thirunarayanan Balathandayuthapani authored
      trx_sys_t::undo_log_nonempty: Set to true if there are undo logs
      to rollback and purge.
      
      The algorithm for re-creating the undo tablespace when
      trx_sys_t::undo_log_nonempty is disabled:
      
      1) trx_sys_t::reset_page(): Reset the TRX_SYS page and assign all
      rollback segment slots from 1..127 to FIL_NULL
      
      2) Free the rollback segment header page of system tablespace
      for the slots 1..127
      
      3) Update the binlog and WSREP information in system tablespace
      rollback segment header
      Step (1), (2) and Step (3) should happen atomically within a
      single mini-transaction.
      
      4) srv_undo_delete_old_tablespaces(): Delete the old undo tablespaces
      present in the undo log directory
      
      5) Make checkpoint to get rid of old undo log tablespaces redo logs
      
      6) Assign new start space id for the undo log tablespaces
      
      7) Re-create the specified undo log tablespaces. InnoDB uses same
      mtr for this one and step (6)
      
      8) Make checkpoint again, so that server or mariabackup
      can read the undo log tablespace page0 before applying
      the redo logs
      
      srv_undo_tablespaces_reinit(): Recreate the undo log tablespaces.
      It does reset trx_sys page, delete the old undo tablespaces,
      update the binlog offset, write set replication checkpoint
      in system rollback segment page
      
      trx_rseg_update_binlog_offset(): Added 2 new parameters to pass
      binlog file name and binlog offset
      
      trx_rseg_array_init(): Return error if the rollback segment
      slot points to non-existent tablespace
      
      srv_undo_tablespaces_init(): Added new parameter mtr
      to initialize all undo tablespaces
      
      trx_assign_rseg_low(): Allow the transaction to use the rollback
      segment slots(1..127) even if InnoDB failed to change to the
      requested innodb_undo_tablespaces=0
      
      srv_start(): Override the user specified value of
      innodb_undo_tablespaces variable with already existing actual
      undo tablespaces
      
      wf_incremental_process(): Detects whether TRX_SYS page has been
      modified since last backup. If it is then incremental backup
      fails and throws the information about taking full backup again
      
      xb_assign_undo_space_start(): Removed the function. Because
      undo001 has first undo space id value in page0
      
      Added test case to test the scenario during startup and mariabackup
      incremental process too.
      
      Reviewed-by : Marko Mäkelä
      Tested-by : Matthias Leich
      baf276e6
  3. 24 Oct, 2022 1 commit
  4. 21 Oct, 2022 3 commits
  5. 17 Oct, 2022 10 commits
  6. 16 Oct, 2022 3 commits
  7. 15 Oct, 2022 2 commits
  8. 14 Oct, 2022 6 commits