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Observe WAL for the table's state: all log records needed for undoing uncommitted state must be in the log before we flush state. storage/maria/ha_maria.cc: comments storage/maria/ma_bitmap.c: Comment for why there is no bug storage/maria/ma_blockrec.c: comment for why there is no bug storage/maria/ma_checkpoint.c: Observe WAL for the table's state: all log records needed for undoing uncommitted state must be in the log before we flush state. I tested by hand that the bug existed (create table, insert one row into it but let that insert pause after increasing data_file_length, let checkpoint start but kill it after it has flushed state). Log contains nothing, table is not recovered though it has a too big data_file_length. With this bugfix, the log contains REDO so table is opened so data_file_length is corrected. storage/maria/ma_close.c: If table is read-only we must never write to it. Should be a no-change in fact, as if read-only, share->changed is normally always false. storage/maria/ma_recovery.c: documenting bug found by Monty. Print when fixing data_file_length.
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