# Wait max 10 min for key encryption threads to encrypt all spaces
# Success!
SET GLOBAL innodb_encryption_threads=4;
SELECT COUNT(*) AS encrypt_threads_running
FROM performance_schema.threads
WHERE NAME LIKE '%encrypt%';
encrypt_threads_running
4
# restart: --innodb-read-only=1 --innodb-encrypt-tables=1
SET GLOBAL innodb_encryption_threads=4;
SELECT COUNT(*) AS encrypt_threads_running
FROM performance_schema.threads
WHERE NAME LIKE '%encrypt%';
encrypt_threads_running
0
# All done