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  1. MariaDB Server
  2. MDEV-27121

mariabackup incompatible with disabled dedicated undo log tablespaces

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      If you clone a server using `innodb-undo-tablespaces=4` to one that isn't, MariaDB server disables these with a warning:

      2021-11-24 19:48:57 0 [Note] InnoDB: Opened 4 undo tablespaces
      2021-11-24 19:48:57 0 [Warning] InnoDB: innodb_undo_tablespaces=0 disables dedicated undo log tablespaces
      2021-11-24 19:48:57 0 [Note] InnoDB: 128 rollback segments in 4 undo tablespaces are active.
      

      Subsequently trying to backup this instance with mariabackup fails:

      (gdb) bt
      #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
      #1  0x00007f1731a91db5 in __GI_abort () at abort.c:79
      #2  0x000055a8a0061df6 in ut_dbg_assertion_failed (expr=0x55a8a0b4dc84 "table",
          file=0x55a8a0991618 "/home/buildbot/buildbot/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX/mariadb-10.6.5/extra/mariabackup/xtrabackup.cc", line=760)
          at /usr/src/debug/MariaDB-/src_0/storage/innobase/ut/ut0dbg.cc:60
      #3  0x000055a8a0015260 in filename_to_spacename (filename=0x55a8a3594a78, len=<optimized out>) at /usr/src/debug/MariaDB-/src_0/extra/mariabackup/xtrabackup.cc:760
      #4  0x000055a8a00b6c99 in xtrabackup_copy_datafile (node=0x55a8a3594a08, thread_n=2, dest_name=0x0, write_filter=..., corrupted_pages=...)
          at /usr/src/debug/MariaDB-/src_0/storage/innobase/include/fil0fil.h:94
      #5  0x000055a8a00b7200 in data_copy_thread_func (ctxt=0x55a8a38194c8) at /usr/src/debug/MariaDB-/src_0/extra/mariabackup/xtrabackup.cc:3098
      #6  0x00007f1732279ba3 in std::execute_native_thread_routine (__p=0x55a8a359e3d0) at ../../../../../libstdc++-v3/src/c++11/thread.cc:80
      #7  0x00007f173275817a in start_thread (arg=<optimized out>) at pthread_create.c:479
      #8  0x00007f1731b6cdc3 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      (gdb) info frame
      Stack level 3, frame at 0x7f1729afa460:
       rip = 0x55a8a0015260 in filename_to_spacename (/usr/src/debug/MariaDB-/src_0/extra/mariabackup/xtrabackup.cc:760); saved rip = 0x55a8a00b6c99
       called by frame at 0x7f1729afac50, caller of frame at 0x7f1729afa400
       source language c++.
       Arglist at 0x7f1729afa3f8, args: filename=0x55a8a3594a78, len=<optimized out>
       Locals at 0x7f1729afa3f8, Previous frame's sp is 0x7f1729afa460
       Saved registers:
        rbx at 0x7f1729afa428, rbp at 0x7f1729afa450, r12 at 0x7f1729afa430, r13 at 0x7f1729afa438, r14 at 0x7f1729afa440, r15 at 0x7f1729afa448, rip at 0x7f1729afa458
      (gdb) frame 0x7f1729afa460
      #3  0x000055a8a0015260 in filename_to_spacename (filename=0x55a8a3594a78, len=<optimized out>) at /usr/src/debug/MariaDB-/src_0/extra/mariabackup/xtrabackup.cc:760
      760     ut_a(table);
      (gdb) frame 0x7f1729afac50
      #4  0x000055a8a00b6c99 in xtrabackup_copy_datafile (node=0x55a8a3594a08, thread_n=2, dest_name=0x0, write_filter=..., corrupted_pages=...)
          at /usr/src/debug/MariaDB-/src_0/storage/innobase/include/fil0fil.h:94
      94    return srv_undo_space_id_start > 0 &&
      

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              Assignee:
              thiru Thirunarayanan Balathandayuthapani
              Reporter:
              mg MG
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                Created:
                Updated:

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