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GFS2

In computing, the Global File System 2 (GFS2) is a shared-disk file system for Linux computer clusters. GFS2 allows all members of a cluster to have direct concurrent access to the same shared block storage, in contrast to distributed file systems which distribute data throughout the cluster. GFS2 can also be used as a local file system on a single computer.

History, Hardware & Differences from a local filesystem

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History

University of MinnesotaSGIIRIXOpen sourceSistina Software
13 related topics

Hardware

Storage area networkISCSIFibre ChannelATA over EthernetDRBD
11 related topics

Differences from a local filesystem

Fcntl()SignalsDnotifyInotifySplice
7 related topics

Journaling

Journaled file systemsExt3Mmap
3 related topics

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Allowed filename characters
All except NUL
Attributes
No-atime, journaled data (regular files only), inherit journaled data (directories only), synchronous-write, append-only, immutable, exhash (dirs only, read only)
Bad blocks
No
Data deduplication
across nodes only
Date resolution
Nanosecond
Dates recorded
attribute modification (ctime), modification (mtime), access (atime)

Topics to explore

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Overview

History

Hardware

Differences from a local filesystem

Journaling

Compatibility and the GFS2 meta filesystem

Advanced semantic analysis

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Map overview Semantic statistics

GFS2

Nodes53
Edges52
Triples70
Avg. degree1.96
Density0.037736
Components1

How this topic connects Entity context

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GFS2

Top relations

related to Hardware · 14
GFS2 → Although, AoE, ATA, Depending, DLM, DRBD, Ethernet, Fibre Channel, GFS, IP, Linux, SAN, The, This
related to Features of GFS2 compared with GFS · 13
GFS2 → ACLs, Compatibility, Configurable, Far, FIEMAP, GFS, Here, I/O, Ordered, SCSI TRIM, Splice, The, XFS-style
related to Differences from a local filesystem · 8
GFS2 → Although, For, GFS/GFS2, Leases, PID, Since, Some, The
related to External links · 8
GFS2 → Enterprise Linux, GFS Documentation PageGFS Project, Global File System, Hat Cluster Suite, Page Archived, Red Hat Red Hat, The GFS2, Wayback MachineOpenGFS Project Page
related to Journaling · 7
GFS2 → GFS, GFS/GFS2, In, Journaled, The, There, This
related to Compatibility and the GFS2 meta filesystem · 3
GFS2 → GFS, There, To
Allowed filename characters · 1
GFS2 → All except NUL
Attributes · 1
GFS2 → No-atime, journaled data (regular files only), inherit journaled data (directories only), synchronous-write, append-only, immutable, exhash (dirs only, read only)
Bad blocks · 1
GFS2 → No
Data deduplication · 1
GFS2 → across nodes only

Important terminology Word statistics

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Important terminology

gfs linux cluster filesystem system lock file also inode data mode metadata files node used red hat shared distributed manager

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
GFS2Allowed filename charactersAll except NUL1.00infobox
GFS2AttributesNo-atime, journaled data (regular files only), inherit journaled data (directories only), synchronous-write, append-only, immutable, exhash (dirs only, read only)1.00infobox
GFS2Bad blocksNo1.00infobox
GFS2Data deduplicationacross nodes only1.00infobox
GFS2Date resolutionNanosecond1.00infobox
GFS2Dates recordedattribute modification (ctime), modification (mtime), access (atime)1.00infobox
GFS2DeveloperRed Hat1.00infobox
GFS2Directory contentsHashed (small directories stuffed into inode)1.00infobox
GFS2File allocationbitmap (resource groups)1.00infobox
GFS2File system permissionsUnix permissions, ACLs and arbitrary security attributes1.00infobox
GFS2Full nameGlobal File System 21.00infobox
GFS2Introduced2005 with Linux 2.6.191.00infobox
GFS2Max filename length255 bytes1.00infobox
GFS2Max no. of filesVariable1.00infobox
GFS2Supported operating systemsLinux1.00infobox
GFS2Transparent compressionNo1.00infobox
GFS2Transparent encryptionNo1.00infobox

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