I’m facing issues with backing up my Discourse instance, the instance is setup to upload to Backblaze’s B2. Error log: Making sure archive does not already exist... Creating empty archive... Archiving data dump... Archiving uploads... Skipping uploads stored on S3. Removing tmp '/var/www/discourse…

Yeah, my setup doesn’t have the AWS_*_CHECKSUM_CALCULATION configs, which is where your setup seems to be erroring. There’s a thread on that feature not being supported by B2 , seems they recently implemented it, but I’m not sure if it actually works.

Error uploading backup to B2

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supermathie (Michael Brown) January 16, 2026, 3:53pm 2

Has this worked previously?

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Error uploading backup to B2

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