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EROFS

EROFS (Enhanced Read-Only File System) is a lightweight read-only file system initially developed by Huawei, originally for the Linux kernel and now maintained by an open-source community.

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Attributes
POSIX, Extended file attributes
Data deduplication
Yes (extent-based)
Date resolution
1 ns
Dates recorded
File change time (extended only)
Developer(s)
Huawei originally, Alibaba Cloud, Bytedance, Coolpad, Google, OPPO, Red Hat, Shanghai Jiao Tong University, VIVO, Uniontech, South China University of Technology
File system permissions
POSIX, ACL

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EROFS

Nodes30
Edges29
Triples54
Avg. degree1.93
Density0.066667
Components1

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EROFS

Top relations

related to Features · 23
EROFS → ACL, Big, DAX, DEFLATE, Direct Access, Direct I/O, EiB, File-based Fscache, Fixed-size, In-place, KiB, Linux, Little-endian, LZ4, Metadata, MiB, MicroLZMA, Multiple, One, Rolling
related to External links · 15
EROFS → Best Block Filesystem, Bootlin, Compression-friendly Readonly File System, Gentle Benchmark, Introduction, Linux, LWN, Michael Opdenacker, Official, Resource-scarce DevicesAn, Smartphone Practice, SquashFS, Your Embedded Linux System, YouTube, YouTubeEROFS
Max file size · 2
EROFS → 16 EiB (extended, also limited by volume size), 4 GiB (compact)
Attributes · 1
EROFS → POSIX, Extended file attributes
Data deduplication · 1
EROFS → Yes (extent-based)
Date resolution · 1
EROFS → 1 ns
Dates recorded · 1
EROFS → File change time (extended only)
Developer(s) · 1
EROFS → Huawei originally, Alibaba Cloud, Bytedance, Coolpad, Google, OPPO, Red Hat, Shanghai Jiao Tong University, VIVO, Uniontech, South China University of Technology
File system permissions · 1
EROFS → POSIX, ACL
Full name · 1
EROFS → Enhanced Read-Only File System

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Important terminology

linux system since file read-only also kernel compression support solution data huawei 16 extended devices transparent oppo size use storage

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
EROFSAttributesPOSIX, Extended file attributes1.00infobox
EROFSData deduplicationYes (extent-based)1.00infobox
EROFSDate resolution1 ns1.00infobox
EROFSDates recordedFile change time (extended only)1.00infobox
EROFSDeveloper(s)Huawei originally, Alibaba Cloud, Bytedance, Coolpad, Google, OPPO, Red Hat, Shanghai Jiao Tong University, VIVO, Uniontech, South China University of Technology1.00infobox
EROFSFile system permissionsPOSIX, ACL1.00infobox
EROFSFull nameEnhanced Read-Only File System1.00infobox
EROFSIntroducedNovember 24, 2019 (2019-11-24) with Linux 5.41.00infobox
EROFSMax file size4 GiB (compact)1.00infobox
EROFSMax file size16 EiB (extended, also limited by volume size)1.00infobox
EROFSMax filename length255 bytes1.00infobox
EROFSMax no. of filesDepends on volume size1.00infobox
EROFSMax volume size1 EiB since 6.151.00infobox
EROFSSupported operating systemsLinux1.00infobox
EROFSTransparent compressionYes (LZ4; LZMA since 5.16; DEFLATE since 6.6)1.00infobox

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