[11:39:50] <Iamahuman>	 Hi. I'm having a problem with a wiki. I have reverted the database and the /var/www back to how it was before I started toying around with how to make Templat:Multiple image, yet it somehow causes just the text '{{#invoke:Multiple image|render}}<noinclude>{{documentation}}<!-- PLEASE ADD CATEGORIES TO THE /doc SUBPAGE, THANKS --></noinclude>' to appear in a page I'm trying to edit. One time I can edit my log page ok, but on the 2nd edit that pops 
[11:39:51] <Iamahuman>	 up
[11:43:38] <Iamahuman>	 am I missing something... I thought revert the whole /var/www/wikistudy and the database would return the wiki to pre-tinkering-around-with-multiple-images-template. I don't get what's happening
[11:43:53] <Iamahuman>	 maybe I should restart memcached?
[11:46:06] <Reedy>	 caching could be in play, indeed
[11:47:46] <Iamahuman>	 starting memcached did not help with the issue
[11:49:30] <Iamahuman>	 After the revert to old db and directory I am able to edit https://wikistudy.byjuho.fi/regarding/User:Jukeboksi/Log/2021 _one_ time, after that it starts hallucinating the wiki should have Module:Multiple_image
[11:50:41] <Reedy>	 Are you sure your backup is from before you started making any changes?
[11:51:41] <Iamahuman>	 positive. backup is from 2021-03-23 and my intrawiki notes showed I messed around with the Template:Multiple image on 2021-03-31
[11:52:32] <Reedy>	 I'm guessing you don't have any caches infront of mediawiki (nginx/varnish/squid etc) either?
[11:52:44] <Iamahuman>	 no, just memcached
[11:53:20] <Reedy>	 well, it's not hallucinating...
[11:53:21] <Reedy>	 https://wikistudy.byjuho.fi/w/index.php?title=User:Jukeboksi/Log/2021&action=edit
[11:53:24] <Reedy>	 it's clearly there in the page text
[11:53:40] <Reedy>	 https://wikistudy.byjuho.fi/w/index.php?title=User%3AJukeboksi%2FLog%2F2021&type=revision&diff=4713&oldid=4712
[11:53:43] <Iamahuman>	 that is not the true source text of the page
[11:53:57] <Reedy>	 How did you restore the database backup?
[11:54:50] <Iamahuman>	 dumped on backupserver with mysqldump and loaded on target server with mysql
[11:56:08] <Iamahuman>	 Every edit causes the complete contents of the page to be replaced with that text, eventhough it looks just fine in preview
[11:58:42] <Reedy>	 Did you delete the database before importing again?
[11:59:12] <Iamahuman>	 just came to think of that same thing... that's prlly what's wrong.
[12:00:23] <Reedy>	 I think it would explain it
[12:00:36] <Reedy>	 and would explain why you're getting suddenly shown random revisions from that previous work
[12:00:52] <Reedy>	 mediawiki is probably silently failling to insert rows that already exist, and results in those being shown
[12:01:10] <Reedy>	 which I admit isn't the best "failure" mode...
[12:04:09] * Reedy thinks about how to formulate this into an actionable bug report
[12:08:54] <Reedy>	 https://phabricator.wikimedia.org/T279231
[12:12:13] <Iamahuman>	 Thanks Reedy for writing a ticket. Deleting the db before loading the backup into it didn't change the situation
[12:12:54] <Reedy>	 I... don't believe that
[12:13:00] <Reedy>	 Did you restart memcached again?
[12:13:04] <Iamahuman>	 yes
[12:23:49] <Reedy>	 It definitely doesn't sound like the deleting the database was done properly
[12:34:00] <Iamahuman>	 drop database wikistudy; is what I used
[12:36:22] <Reedy>	 if that actually suceeded, those rows don't just appear back from nowhere
[12:36:38] <Iamahuman>	 now I restored a backup from 2021-03-07 and the problem seems to have gone away. I think this may have been due to not deleting the database before loading the new version in.
[12:38:46] <Reedy>	 while this shouldn't be a supported use case, MW is definitely handling it badly
[13:18:02] <Iamahuman>	 so for the future: drop the databases on the backup verification server before loading new set in? to avoid any previously backupped tables from lingering on
[15:54:11] <Reception123>	 I'm trying to figure out an error and this is an example: why does https://en.wikipedia.org/wiki/Talk:X:Talk work but https://en.wikipedia.org/wiki/Talk:D:Talk throw a "Bad title" error?
[15:54:25] <Reception123>	 what's the difference between the "D" and the "X" letters that one of them gives an error but the other doesn't?
[16:00:16] <Majavah>	 Reception123: d: is an interwiki to wikidata, x is not, and I'd guess it's because the mainspace name "D:Talk" would not be valid
[16:02:03] <Reception123>	 Majavah: oh, that makes sense, thanks
[18:20:54] <Leaderboard>	 Hi, has anyone encountered this issue before? https://www.mediawiki.org/wiki/Topic:W5lgiqgfoovv4aeg
[18:21:26] <Leaderboard>	 (apologies if this isn't allowed, but it's been a while)
[18:22:27] <Leaderboard>	 Thanks in adcance.
[18:22:29] <Leaderboard>	 *advance.
[18:23:00] <RhinosF1>	 There's a task somewhere
[18:23:16] <RhinosF1>	 https://phabricator.wikimedia.org/T279203
[18:23:29] <RhinosF1>	 Curl error is different
[18:23:33] <RhinosF1>	 Weird though
[18:52:32] <Leaderboard>	 RhinosF1: indeed, and that's not something I've seen in the internet