{"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\/en\/blog\/news\/new-beamfs-xmfs-and-meshxfs-file-systems-implemented-for-the-linux-kernel","title":{"rendered":"New file systems BeamFS, XMFS, and MeshXFS have been implemented for the Linux kernel.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In the mailing list for Linux kernel developers, patches have been published for the implementation of the BeamFS file system, which uses Reed-Solomon coding to identify and recover corrupted data on-site in single-storage configurations. The main areas of application for BeamFS are said to include onboard computers of satellites, equipment in radiation therapy rooms, and other systems operating in high-radiation conditions where returning corrupted data is more critical than the inability to read the 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 the superblock, inode, directory indexes, and bitmaps. Integrity checks and attempts to recover missing data are performed on every read operation. If the integrity of the information cannot be guaranteed, the operation is concluded with an error \u2018-EIO\u2019, which excludes the hidden return of corrupted data. <\/p>\n

Experiments showed that when the i.MX 8M Plus board with Linux and the ext4 file system was irradiated with protons with energies 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 conducted: BeamFS and Btrfs successfully recognized 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 the transfer to the page cache in RAM. The integrity of storage in RAM can be maintained using memory chips with error correction.
\nAmong the limitations of BeamFS, the lack of support for journaling and Copy-on-Write (CoW) mode is noted \u2014 metadata is written to the storage in an unordered fashion, so a full check using fsck is required in case of an improper shutdown.<\/p>\n

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