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MDEV-9931: InnoDB reads first page of every .ibd file at startup

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Analysis: By design InnoDB was reading first page of every .ibd file
at startup to find out is tablespace encrypted or not. This is
because tablespace could have been encrypted always, not
encrypted newer or encrypted based on configuration and this
information can be find realible only from first page of .ibd file.

Fix: Do not read first page of every .ibd file at startup. Instead
whenever tablespace is first time accedded we will read the first
page to find necessary information about tablespace encryption
status.

TODO: Add support for SYS_TABLEOPTIONS where all table options
encryption information included will be stored.
This commit is contained in:
Jan Lindström
2016-09-22 16:32:26 +03:00
parent e387bfafbb
commit 2bedc3978b
40 changed files with 1171 additions and 130 deletions
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3
mysql-test/suite/encryption/t/innodb_lotoftables.opt Normal file
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@ -0,0 +1,3 @@
--innodb-tablespaces-encryption
--innodb-encrypt-tables=off
--innodb-encryption-threads=0