The Ubuntu team has been gradually adding more support for the advanced filesystem called ZFS. ZFS is able create vast storage pools across multiple disks and supports creating filesystem snapshots, deduplicating files, and compression. Making it possible to run ZFS as the root filesystem is an experimental feature planned for Ubuntu 19.10. "So, what's new for Ubuntu 19.10 (Eoan Ermine)? As has already been reported, spotted in our weekly team report on Ubuntu discourse, we are going to enhance ZFS on root support in the coming cycles. Ubuntu 19.10 is a first round towards that goal. We want to support ZFS on root as an experimental installer option, initially for desktop, but keeping the layout extensible for server later on. The desktop will be the first beneficiary in Ubuntu 19.10. Note the use of the term ‘experimental' though! As we want to have the dataset layout right and we know a file system is very crucial as it's responsible for all your data, we don't want to encourage people to use it on production systems yet, or at least, not without regular backups." Further details are available in this Ubuntu blog post.
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