Re: Operation log for major operations

Hi!

 >The patch does not apply on top of HEAD ...

Here is a fixed version.
Small additional fixes:
1) added CRC calculation for empty 'pg_control_log' file;
2) added saving 'errno' before calling LWLockRelease and restoring after 
that;
3) corrected pg_upgrade for case old cluster does not have 
'pg_control_log' file.

-- 
With best regards,
Dmitry Koval

Postgres Professional: http://postgrespro.com