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Checking mysql progress on startup with cluster

Mysql startup can take quite some time in a cluster setup, where it's net pretty obvious what mysql is doing. (At least, not visible with journalctl -u mysql -f)

If it hangs with one CPU on 100% load, it's most likely scanning .ibd files.

You can verify this (and the progress) with watch -n1 'lsof -n -p $(pidof mysqld) |grep var.*lib'