Upgraded successfully from 16.04 to 18.04, then followed the tutorial for upgrade from 18.04 to 20.04. do-release-upgrade fails with “ERROR doUpdate() failed completely”. Lots of “ERROR IOError/SystemError”, but this one caught my eye:
ERROR IOError/SystemError in cache.update(): 'E:Failed to fetch https://repos.sonar.digitalocean.com/apt/dists/main/main/Contents-amd64.gz File has unexpected size (200 != 135). Mirror sync in progress? [IP: 151.101.17.7 443]
Where to start debugging this problem?
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
Accepted Answer
Hi there @mike426137,
I just tested the upgrade process with do-release-upgrade -d and it worked as expected.
I would recommend trying to run the following:
- Begin by updating the package list:
- sudo apt update
- Next, upgrade installed packages to their latest available versions:
- sudo apt upgrade
- Finally run the dist upgrade command again.
If you get any errors again, feel free to share them here so that I could advise you further.
Hope that this helps! Regards, Bobby
Become a contributor for community
Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.
DigitalOcean Documentation
Full documentation for every DigitalOcean product.
Resources for startups and SMBs
The Wave has everything you need to know about building a business, from raising funding to marketing your product.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
Get started for free
Sign up and get $200 in credit for your first 60 days with DigitalOcean.*
*This promotional offer applies to new accounts only.