Ceph File-System Updates For Linux 5.18 Address A "Pretty Nasty Problem", Other Bugs

Written by Michael Larabel in Linux Storage on 27 March 2022 at 05:17 AM EDT. 1 Comment
The Ceph file-system updates for this scalable distributed storage system have landed for Linux 5.18 with some fairly noteworthy fixes.

First up, this new feature pull has fixed a long-standing problem of high KWorker CPU usage and stalls caused by needlessly iterating over all inodes in the snap realm. The situation is summed up in this 2 year old bug report. It was summed up by one of the developers, Jeff Layton, as a "pretty nasty problem" but after two years and changes to how snap context and realms are tracked, the high CPU usage problem should be resolved.

Ceph with Linux 5.18 also has async file creation fixes to address hangs under certain conditions. There are also memory leak fixes and other issues cleared up with this new Ceph code for Linux 5.18.

If you are a user of this software-defined storage solution, learn more about the Linux 5.18 changes via this pull request that has already been merged to mainline.
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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 20,000 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, LinkedIn, or contacted via MichaelLarabel.com.

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