{"id":183926,"date":"2026-10-21T17:40:46","date_gmt":"2026-10-21T15:40:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/dlya-yadra-linux-realizovany-novye-fajlovye-sistemy-beamfs-xmfs-i-meshxfs"},"modified":"2026-10-21T17:40:54","modified_gmt":"2026-10-21T15:40:54","slug":"new-beamfs-xmfs-and-meshxfs-file-systems-implemented-for-the-linux-kernel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/no\/blog\/news\/new-beamfs-xmfs-and-meshxfs-file-systems-implemented-for-the-linux-kernel","title":{"rendered":"Nye filsystemer BeamFS, XMFS og MeshXFS er implementert for Linux-kjernen.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

For discussion in the mailing list of Linux kernel developers, patches have been published that implement the BeamFS file system, which uses Reed-Solomon coding to identify and restore corrupted data in single-storage configurations. The main areas of application for BeamFS include onboard computers of satellites, equipment used in radiation therapy rooms, and other systems operating in high-radiation environments, where the return of corrupted data is more critical than the inability to read information.<\/p>\n

By default, BeamFS can recover up to 8 lost bytes in each 255-byte block with an overhead of 7% (288 bytes of recovery codes for every 4096 bytes of stored data). Error correction codes are applied not only to data but also to metadata in superblocks, inodes, directory indices, and bitmaps. Integrity checks and attempts to recover missing data are performed with each read operation. If the integrity of the information cannot be guaranteed, the operation ends with an error \u2018-EIO\u2019, which excludes the hidden return of corrupted data. <\/p>\n

Experiments conducted showed that when irradiating the i.MX 8M Plus board with Linux and ext4 FS with protons ranging from 20 to 58 MeV, 90% of all failures occurred at the file system and storage driver levels. A simulation of single-bit distortions during reading from the medium was also performed: BeamFS and Btrfs successfully recognized the data corruption and always returned an error, while ext4 and ext3 silently returned corrupted data.<\/p>\n

BeamFS ensures integrity and recovery only from the stage of reading from the physical medium to transmission to the page cache in RAM. Integrity retention in RAM can be supported using error-correcting memory chips.
\nAmong the limitations of BeamFS is the lack of support for journaling and Copy-on-Write (CoW) mode \u2014 metadata is written to storage in an unordered manner, so in the case of an improper shutdown, a full check using fsck is required.<\/p>\n

In addition to BeamFS, two more file systems have recently been proposed for the Linux kernel: <\/p>\n