name for the new division. In November 2019, OpenSFS and EOFS announced at the SC19 Lustre BOF that the Lustre trademark had been transferred to them jointly from Seagate. Release history Lustre file system was first installed for production use in March 2003 on the MCR Linux Cluster at the Lawrence Livermore National Laboratory, one of the largest supercomputers at the time. Lustre 1.0.0 was released in December 2003, and provided basic Lustre filesystem functionality, including server failover and recovery. Lustre 1.2.0, released in March 2004, worked on Linux kernel 2.6, and had a "size glimpse" feature to avoid lock revocation on files undergoing write, and client side data write-back cache accounting (grant). Lustre 1.4.0, released in November 2004, provided protocol compatibility between versions, could use InfiniBand networks, and could exploit extents/mballoc in the ldiskfs on-disk filesystem. Lustre 1.6.0, released in April 2007, allowed mount configuration (“mountconf”) allowing servers to be configured with "mkfs" and "mount", allowed dynamic addition of object storage targets (OSTs), enabled Lustre distributed lock manager (LDLM) scalability on symmetric multiprocessing (SMP) servers, and provided free space management for object allocations. Lustre 1.8.0, released in May 2009, provided OSS Read Cache, improved recovery in the face of multiple failures, added basic heterogeneous storage management via OST Pools, adaptive network timeouts, and version-based recovery. It was a transition release, being interoperable with both Lustre 1.6 and Lustre 2.0. Lustre 2.0, released in August 2010, was based on significant internally restructured code to prepare for major architectural advancements. Lustre 2.x clients cannot interoperate with 1.8 or earlier servers. However, Lustre 1.8.6 and later clients can interoperate with Lustre 2.0 and later servers. The Metadata Target (MDT) and OST on-disk format from 1.8 can be upgraded to 2.0 and later without the need to reformat the filesystem. Lustre 2.1, released in September 2011, was a community-wide initiative in response to Oracle suspending development on Lustre 2.x releases. It added the ability to run servers on Red Hat Linux 6 and increased the maximum ext4-based OST size from 24 TB to 128 TB, as well as a number of performance and stability improvements. Lustre 2.1 servers remained inter-operable with 1.8.6 and later clients. Lustre 2.2, released in March 2012, focused on providing metadata performance improvements and new features. It added parallel directory operations allowing multiple clients to traverse and modify a single large directory concurrently, faster recovery from server failures, increased