Finally we see the introduction of the cutely named foo-over-UDP support, allowing a number of other protocols to nest inside. On the networking side we see the start of routing and switch offload support, and the addition of checksum offload for Generic UDP Encapsulation. Overlayfs finally moved upstream so simplifying its provision in Ubuntu. NFS gained hole punching and preallocation support. A number of filesystems gained minor new features, including btrfs which improved its disk replacement in raid 5 and 6 configurations, and support for scrubbing in those. Netfilter (nftables) continues to evolve gaining facilities for package logging and dumping. There are also improvements to inode locking which should show benefits under heavy load. Many of these packages came from an automatic sync from Debian's unstable branch others have been explicitly pulled in for Ubuntu 15.04.įor a list of all packages being accepted for Ubuntu 15.04, please subscribe to vivid-changes.įor servers we see a number of performance related improvements including network send batching and the introduction of the data centre congestion algorithm, as well as the introduction of discard support in Device Mapper raid configurations. Please ensure you have network connectivity to one of the official mirrors or to a locally accessible mirror and follow the instructions above.Īs with every new release, packages-applications and software of all kinds-are being updated at a rapid pace. There are no offline upgrade options for Ubuntu Desktop and Ubuntu Server. Note that the server upgrade will use GNU screen and automatically re-attach in case of dropped connection problems. Launch the upgrade tool with the command sudo do-release-upgrade.
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