Re: [Wikitech-l] s6 primary master switchover (read-only required) 19th Nov 05:00 AM UTC
Hello, This was done successfully. Read only starts: 06:01:23 Read only stops: 06:02:04 Total read only time: 41 seconds On Tue, Nov 19, 2019 at 6:00 AM Manuel Arostegui wrote: > Hello, > > This will start in 1 hour. > > Thanks, > Manuel. > > On Tue, Oct 15, 2019 at 10:44 AM Manuel Arostegui < > maroste...@wikimedia.org> wrote: > >> Hello, >> We have requested a 30 minutes read-only window for s6 wikis (T235475) >> for the 19th Nov from 05:00-05:30 AM UTC to switchover that section primary >> database master (T235469) >> >> db1061 is an old host and out of warranty that will be decommissioned >> (T217396). The new master will be db1131. >> >> We are going to do this on Tuesday 19th Nov from 05:00 to 05:30 AM UTC >> (we do not expect to use the 30 minutes window, if everything goes as >> expected). >> >> Impact: Writes will be blocked on the following wikis >> frwiki >> jawiki >> ruwiki >> >> Reads will remain unaffected. >> >> Communication will happen at #wikimedia-operations >> If you are around at that time and want to help with the monitoring, >> please join us! >> >> Thanks >> > ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
Re: [Wikitech-l] s6 primary master switchover (read-only required) 19th Nov 05:00 AM UTC
Hello, This will start in 1 hour. Thanks, Manuel. On Tue, Oct 15, 2019 at 10:44 AM Manuel Arostegui wrote: > Hello, > We have requested a 30 minutes read-only window for s6 wikis (T235475) for > the 19th Nov from 05:00-05:30 AM UTC to switchover that section primary > database master (T235469) > > db1061 is an old host and out of warranty that will be decommissioned > (T217396). The new master will be db1131. > > We are going to do this on Tuesday 19th Nov from 05:00 to 05:30 AM UTC (we > do not expect to use the 30 minutes window, if everything goes as expected). > > Impact: Writes will be blocked on the following wikis > frwiki > jawiki > ruwiki > > Reads will remain unaffected. > > Communication will happen at #wikimedia-operations > If you are around at that time and want to help with the monitoring, > please join us! > > Thanks > ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
Re: [Wikitech-l] The difference between fileexists-no-change and backend-fail-alreadyexists for action=upload
So fileexists-no-change happens when your uploading a new version of a file, MediaWiki calculates the sha1 sum, and notices that the img_sha1 field in the db for the current version of the file is the same as what was just calculated for the new file. Which probably (although not necessarily now that sha1 is broken) means the file you're uploading is the same as the one already there. backend-fail-alreadyexists basically means that MediaWiki was about to write a file somewhere, but there already was a file at that place, and the overwrite/overwriteSame flags were not set, so there should not have already been a file in that place (The file already there, may or may not be the same as the new file). Normally I would assume that something more frontend-y would give an error before this error would be encountered. Perhaps it might be encountered during a race condition. This is mostly speculation as I'm not super familiar with the FileBackend code. -- bawolff On Sat, Nov 16, 2019 at 6:51 AM Chen Xinyan wrote: > Hi there, > > Hope I've found the correct list for asking this question. > > I was setting up a CI test case for my MediaWiki Client Library to run a > bot that will upload a file to https://en.wikipedia.beta.wmflabs.org in > chunked stash mode. For most of the time, when I perform the final upload > with filekey parameter, I will receive a fileexists-no-change error from > the MW API server. This is expected, as there is already a same file with > the same title on the site. However, today I received > backend-fail-alreadyexists. The error message looks like > > backend-fail-alreadyexists: The file > "mwstore://local-swift-eqiad/local-public/archive/9/95/20191116051316!Test_image.jpg" > already exists. > > Does this error usually occurs when user tries to upload the same file? > What's the difference between fileexists-no-change and > backend-fail-alreadyexists? > > Thanks, > Xinyan > > ___ > Wikitech-l mailing list > Wikitech-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikitech-l ___ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
