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- InnoDB fails to recover the full crc32 encrypted page from doublewrite buffer. The reason is that buf_dblwr_t::recover() fails to identify the space id from the page because the page has been encrypted from FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION bytes. Fix: === buf_dblwr_t::recover(): preserve any pages whose space_id does not match a known tablespace. These could be encrypted pages of tablespaces that had been created with innodb_checksum_algorithm=full_crc32. buf_page_t::read_complete(): If the page looks corrupted and the tablespace is encrypted and in full_crc32 format, try to restore the page from doublewrite buffer. recv_dblwr_t::recover_encrypted_page(): Find the page which has the same page number and try to decrypt the page using space->crypt_data. After decryption, compare the space id. Write the recovered page back to the file. |
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