Linux 4.18 Drops The Lustre File-System
Written by Michael Larabel in Linux Kernel on 9 June 2018 at 05:28 PM EDT. 9 Comments
LINUX KERNEL --
There are a lot of staging changes for the busy Linux 4.18 kernel merge window.

The staging area of the kernel where premature/incomplete kernel code goes has seen over one thousand patches this cycle that amount to 168 thousand lines of new code and 227 thousand lines of code removed. In part for the staging area coming in lighter is the Lustre file-system has been removed.

The Lustre file-system as a reminder is a parallel distributed file-system intended for cluster computing that has been around for a decade and a half. While the Lustre file-system is used by super-computers and other cluster computing setups, Greg Kroah-Hartman as the staging subsystem maintainer has removed the code due to a lack of progress in cleaning up the code-base. The Lustre developers, meanwhile, continue working on their own external tree and just port their code to the in-tree mainline code once in a while.

So for now Lustre users will need to rely upon the out-of-tree kernel code until if/when the code is cleaned up to a state where in the future it would be ready to go into the mainline kernel tree once again. Greg KH has expressed his displeasure with the state of the in-kernel Lustre file-system code going back several years.

Other staging area work includes various driver clean-ups, DebugFS clean-ups, removal of NCPFS/IPX code, and various other coding improvements.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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