http://retinal.dehy.de/docs/ 2026-05-09T23:09:19+02:00 http://retinal.dehy.de/docs/ http://retinal.dehy.de/docs/lib/tpl/minimal/images/favicon.ico text/html 2017-12-08T00:34:53+02:00 http://retinal.dehy.de/docs/doku.php?id=technotes:twindb:innochecksum_changer&rev=1512689693&do=diff This is one of the tools built by the standard make command in the TwinDB source code download. I haven't yet found any reference to it in the TwinDB documentation. It has, however, saved my data, and almost certainly also saved a lot of my time fiddling about with all the other tools which I did find various bits of documentation about. I played with them enough to see what they could do, but I didn't go all the way and run each of them on every table of every database I wanted to recover. text/html 2017-12-06T22:54:52+02:00 http://retinal.dehy.de/docs/doku.php?id=technotes:twindb:make&rev=1512597292&do=diff Back when I wrote C for a living, I took pride in writing my code so that it compiled with no errors and also no warnings. ~# ~/undrop-for-innodb# make cc -D_FILE_OFFSET_BITS=64 -Wall -g -O3 -pipe -I./include -c stream_parser.c stream_parser.c: In function ‘valid_innodb_page’: stream_parser.c:151:31: warning: variable ‘oldcsumfield’ set but not used [-Wunused-but-set-variable] unsigned int page_n_heap, oldcsumfield; ^ stream_parser.c: In function ‘process_ib…