As suggested by the title, this post consists of two parts. The first part will explain how nginx fastcgi buffering can be exploited relatively easily to fill up a servers hard drive. The second part will tell you how I had to learn this the hard way…Read More
If you are stuck with PHP 5.4 (e.g. because you are still running Debian Wheezy) and want to migrate from ownCloud to Nextcloud, you are probably facing a minor issue. Nextcloud 11 and newer require PHP 5.6 so you have to stick to version 10 instead. Nextcloud 10 reached its end-of-life with version 10.0.5, which internally corresponds to ownCloud version 9.1.5. The most recent version of ownCloud 9 is version 9.1.6 though, so when trying to migrate to Nextcloud you will face the following error:
Downgrading is not supported and is likely to cause unpredictable issues (from 184.108.40.206 to 220.127.116.11)
Looking at the git commits between ownCloud 9.1.5 and 9.1.6 shows that there were no changes to the database layout. So, as a workaround, you can just edit your config/config.php and set version to 18.104.22.168 or lower. Afterwards, you should be able to run the normal upgrade procedure.
For some time now I run a small ownCloud instance to synchronize my contacts and calendars across different devices. When another person tried to migrate his Google calendars to this instance there was an issue though. The .ics files exported from Google contained invalid entries that were copied into ownCloud’s database and broke synchronization with 3rd party applications like Thunderbird’s Lightning extension.