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Uploading large files

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Revision as of 16:47, 30 March 2021 by imported>Legoktm (include --sleep in example)
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Requirement

You need:

  • the URL of the media file to upload
  • a text file with the first revision content
  • the name of the user account for this first revision and upload

MediaWiki currently doesn't support files greater than 4 GB (as size is stored as a 32 bits unsigned integer) while our swift backend storage is limited to 5 Gb. See phab:T191804 and phab:T191802 for discussion to extend this limit respectively to 5 GB and beyond.

Step 1: download files

Download the files to mwmaint1002 (or if there's not enough space, deploy1001).

wget <URL>

At this stage, it could be pertinent to check the hash of the file if known.

Step 2: import image to Commons

Server-side uploads run much faster because of minimal network overhead, and as a result can cause extra strain on the job queue, especially videos which require transcoding. It's recommended to add some delay in between each upload with the --sleep parameter. Because videos have various factors (resolution, fps, length) that would affect how long transcodes would take, it might be worth uploading one video, seeing how long the median transcode takes, and then sleeping for that length to avoid queuing up a large number of transcodes.

mwscript importImages.php --wiki=commonswiki --sleep=SECONDS --comment-ext=txt --user=USERNAME /tmp/uploads