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Copy-on-write file system
Btrfs (pronounced as "better F S", "butter F S", "b-tree F S", or "B.T.R.F.S.") is a computer storage format that combines a file system based on the copy-on-write
Btrfs
Computer error correction technique
Archived from the original on 2013-09-21. Retrieved 2013-09-20. "btrfs Wiki: Features". The btrfs Project. Archived from the original on 2012-04-25. Retrieved
Data_scrubbing
Version history of the Linux kernel
LWN.net. Retrieved 31 May 2026. btrfs. "Logical mapping tree feature (relocation rework) · Issue #54 · btrfs/btrfs-todo". GitHub. Retrieved 31 May 2026
Linux_kernel_version_history
Computer filing system
exFAT, NTFS, ReFS, HFS and HFS+, HPFS, APFS, UFS, ext2, ext3, ext4, XFS, btrfs, Files-11, Veritas File System, VMFS, ZFS, ReiserFS, NSS and ScoutFS. Some
File_system
Data storage technology
UseNix.org. IBM. Retrieved 2014-09-28. "Btrfs Wiki: Feature List". 2012-11-07. Retrieved 2012-11-16. "Btrfs Wiki: Changelog". 2012-10-01. Retrieved 2012-11-14
RAID
Operating system virtualization paradigm
host filesystem is btrfs, in which case btrfs subvolumes are automatically used. I/O rate limiting is supported when using Btrfs. Available since Linux
OS-level_virtualization
Lossless compression algorithm
"Fedora Workstation 34 feature focus: Btrfs transparent compression". Fedora Magazine. Retrieved 12 May 2022. "Changes/BtrfsTransparentCompression". Fedora Project
Zstd
Recorded state of a computer storage system at a particular point in time
system. On Linux, the Btrfs and OCFS2 file systems support creating snapshots (cloning) of individual files. Additionally, Btrfs also supports the creation
Snapshot_(computer_storage)
Any of a set of standard configurations of Redundant Arrays of Independent Disks
Michael (2014-10-22). "Btrfs RAID HDD Testing on Ubuntu Linux 14.10". Phoronix. Retrieved 2015-09-19. Larabel, Michael (2014-10-29). "Btrfs on 4 × Intel SSDs
Standard_RAID_levels
128-bit number used to identify information in computer systems
UUIDs is one in a billion. Several filesystem types (for example, ext4 and Btrfs) use a UUID to uniquely identify each filesystem to the operating system
Universally_unique_identifier
Community-supported Linux distribution
support, updated filesystems such as Ext4 as the new default and support for Btrfs, installer support for whole-disk encryption, significant improvements to
OpenSUSE
Techniques for using multiple disk drives that do not use RAID
"Vail"– Update". "Using Btrfs with Multiple Devices - btrfs Wiki". btrfs.wiki.kernel.org. Retrieved 2021-01-19. "Five Years of Btrfs | MarkMcB". markmcb.com
Non-RAID_drive_architectures
Command in Linux
The btrfs file system includes the attribute functionality, including the C flag, which turns off the built-in copy-on-write (CoW) feature of btrfs due
Chattr
Logical volume management system
vgcfgrestore command. Linux portal Btrfs (has its own "snapshots" that are different, but using LVM snapshots of btrfs leads to loss of both copies) Device
Logical Volume Manager (Linux)
Logical_Volume_Manager_(Linux)
Journaling file system for Linux
the time that Btrfs may be the better direction because "it offers improvements in scalability, reliability, and ease of management". Btrfs also has "a
Ext4
Accumulation of data corruption on a storage device over time
original (PDF) on 21 September 2013. Retrieved 4 March 2013. "btrfs Wiki: Features". The btrfs Project. Retrieved 19 September 2013. Wlodarz, Derrick (15
Data_degradation
Copy-on-write file system for Linux
operating systems. It is intended to compete with the modern features of ZFS or Btrfs. It was first announced it in 2015, and added to the Linux kernel beginning
Bcachefs
System tool for checking the consistency of a file system
the disk. This design is reflected by the -F flag used at boot. ZFS and Btrfs, two full copy-on-write file systems. They avoid in-place changes to assure
Fsck
Proprietary file system developed by Microsoft
and Btrfs are designed to integrate data protection, snapshots, and background error correction. In 2012, Phoronix wrote an analysis of ReFS vs Btrfs. At
ReFS
Linux distribution
Pack 2 notably bringing Btrfs commercial support to the enterprise Linux market and including the snapper tool to manage Btrfs snapshots. The most current
SUSE_Linux_Enterprise
Replication of data onto multiple hard disks
Additionally, file systems like Btrfs or ZFS provide integrated data mirroring. There are additional benefits from Btrfs and ZFS, which maintain both data
Disk_mirroring
Free Unix-like operating system kernel
from the original on 7 February 2014. Retrieved 19 February 2014. "btrfs Wiki". btrfs.wiki.kernel.org. Archived from the original on 25 April 2012. Retrieved
Linux_kernel
Linux distribution
GNU Parted and GParted (supports MBR and GPT) File system tools – btrfs-progs (btrfs), dosfstools (FAT family), e2fsprogs (ext2/ext3/ext4), NTFS-3G (NTFS)
SystemRescue
Fedora OS release dates
features in Fedora 11 are: ext4 as the default file system experimental Btrfs activated by IcantbelieveitsnotBTR command line option at bootup faster
Fedora_Linux_release_history
Linux storage configuration daemon
was originally developed by Red Hat to have feature parity with ZFS and Btrfs. The hope was due to Stratis configuration daemon being in userland, it
Stratis (configuration daemon)
Stratis_(configuration_daemon)
intended to leverage the Btrfs architecture to gain higher performance than existing protocols (such as NFS and SMB) and to expose Btrfs features such as snapshots
CRFS
Data used to detect errors in other data
algorithm Parity bit Rolling checksum Verhoeff algorithm File systems Bcachefs, Btrfs, ReFS and ZFS – file systems that perform automatic file integrity checking
Checksum
Surplus computer data for error correction
measure against silent data corruption; for example, file systems such as Btrfs and ZFS use data and metadata checksumming in combination with copies of
Data_redundancy
Compressed read-only file system for Linux
extended file attributes. Free and open-source software portal AppImage Btrfs Cloop Comparison of file systems Cramfs e2compr EROFS Initramfs List of
SquashFS
Free and open-source operating system
Larabel, Michael (7 January 2011), "Can DragonFlyBSD's HAMMER Compete With Btrfs, ZFS?", Phoronix, retrieved 20 November 2011, HAMMER does appear to be a
DragonFly_BSD
Byte File System (BFS) - file system used by z/VM for Unix applications Btrfs – is a copy-on-write file system for Linux announced by Oracle in 2007 and
List_of_file_systems
Maintenance of data over its entire life-cycle
protection against data integrity problems. Some filesystems (including Btrfs and ZFS) provide internal data and metadata checksumming that is used for
Data_integrity
log to provide better performance when synchronous writes are requested. Btrfs is a transactional filesystem using copy-on-write semantics, guaranteeing
Comparison_of_file_systems
Set of file system features
ext2, ext3, ext4, JFS, Squashfs, UBIFS, Yaffs2, ReiserFS, Reiser4, XFS, Btrfs, OrangeFS, Lustre, OCFS2 1.6, ZFS, and F2FS filesystems support extended
Extended_file_attributes
Arch-derived Linux distribution
graphical installer. The bootloader used is GRUB. The distribution uses the btrfs file system by default which supports snapshots. The snapshots can be accessed
Garuda_Linux
Technology for maintenance of file systems
Retrieved 21 February 2015. "Defragmentation". BTRFS documentation. Retrieved 2024-07-26. "Administration". BTRFS documentation. Retrieved 2024-07-26. "HTG
Defragmentation
Microsoft technology for storage snapshots
Shadow Copy Service on an LVM-backed storage or with an underlying ZFS or btrfs. While the different NTFS versions have a certain degree of both forward
Shadow_Copy
Technology for controlling access to file system items
considered powerful yet complex. Linux file systems such as ext2, ext3, ext4, Btrfs support both POSIX permissions and POSIX.1e ACLs. There is experimental
File-system_permissions
Errors in computer data that introduce unintended changes to the original data
watching for deteriorating SMART parameters. Some file systems, such as Btrfs, HAMMER, ReFS, and ZFS, use internal data and metadata checksumming to detect
Data_corruption
Bootloader suite for Linux operating system
Preboot Execution Environment (PXE) system EXTLINUX, used for booting from Btrfs, ext2, ext3, ext4, FAT, NTFS, UFS/UFS2, and XFS filesystems MEMDISK, emulates
SYSLINUX
Linux distribution
support for both ARM and Intel x86 processors with SSSE3 enabled and used btrfs as the default file system. Within the MeeGo project there are several graphical
MeeGo
Partition clone and restore tool
supports the following filesystems: ext2, ext3, ext4, hfs+, reiserfs, reiser4, btrfs, vmfs(v3, v5), xfs, jfs, ufs, ntfs, fat(12/16/32), and exFAT. To run partclone
Partclone
Computer storage device with no moving parts
33 of the Linux kernel mainline, released on 24 February 2010. The ext4, Btrfs, XFS, JFS, and F2FS file systems include support for the discard (TRIM or
Solid-state_drive
Journaling file system for Linux
believes that Btrfs is the better direction, because "it offers improvements in scalability, reliability, and ease of management". Btrfs also has "a number
Ext3
Storage area in computer file system
database-oriented file system BFS – BeOS, Zeta and Haiku operating systems Btrfs – Extent-based copy-on-write (COW) file system for Linux EFS – Extent File
Extent_(file_systems)
System and RAID Types". docs-old.fedoraproject.org. Retrieved 2018-07-25. "Btrfs Coming to Fedora 33". fedoramagazine.org. 24 August 2020. Retrieved 2021-04-22
List_of_default_file_systems
with sparse file support and btrfs-convert, a tool that can convert from ext2/ext3/ext4 or reiserFS file system to Btrfs in-place. The command-syntax
Convert_(command)
Programming technique for efficiently duplicating data
edited. COW is used as the underlying mechanism in file systems like ZFS, Btrfs, ReFS, and Bcachefs, as well as in logical volume management and database
Copy-on-write
High-density disk drive recording technology
zones for metadata. Btrfs had zoned mode support added in Linux kernel 5.12, and it's compatible with host-managed drives. Btrfs already writes mostly
Shingled_magnetic_recording
OpenBSD.org. 2022-09-06. Retrieved 2022-09-08. "Manual Pages: mkfs.btrfs(8)". btrfs-progs. 2018-01-08. Retrieved 2018-08-17. "Maintenance Commands zfs
Non-standard_RAID_levels
Sequence of bits or bytes of a fixed size
partially empty. This will create slack space. Some newer file systems, such as Btrfs and FreeBSD UFS2, attempt to solve this through techniques called block
Block_(data_storage)
Free incomplete Windows NT-like operating system
Context, Btrfs support, improved Shell, USB bug fixes, support for Virtual Machine Shared Folders Unsupported: 0.4.2 2016-08-16 Improved Btrfs and extended
ReactOS
File system from DragonFly BSD
software portal Comparison of file systems List of file systems HAMMER2 ZFS Btrfs OpenZFS "В состав DragonFlyBSD 2.0 будет включена файловая система HAMMER"
HAMMER_(file_system)
History of the Ubuntu operating system
liquid-crystal displays, Raspberry Pi touchscreens, Adiantum encryption, Btrfs swap files as well as many USB 3.2 and Type-C improvements and several other
Ubuntu_version_history
File system for tracking pending changes
a normal file system. Full copy-on-write file systems (such as ZFS and Btrfs) avoid in-place changes to file data by writing out the data in newly allocated
Journaling_file_system
File system from DragonFly BSD
open-source software portal Comparison of file systems List of file systems ZFS Btrfs OpenZFS Dillon, Matthew (2017-07-24). "DESIGN document for HAMMER2 (24-Jul-2017
HAMMER2
Directory structure used by a Unix-like operating system
generalized overview of common locations of files on a Unix operating system: Btrfs ext2 ext3 ext4 Filesystem Hierarchy Standard HAMMER JFS (file system) Unix
Unix_filesystem
Desktop environment forked from GNOME 3
used to undo undesired system changes through the use of snapshots via BTRFS or rsync. Blueberry is a graphical frontend for the CLI gnome-bluetooth
Cinnamon (desktop environment)
Cinnamon_(desktop_environment)
NAS operating system
GPT/EFI partitioning >2 TByte possible File systems: ext2, ext3, ext4, Btrfs, XFS, JFS, NTFS, FAT32 (ZFS with third-party plug-in) Quota User and group
OpenMediaVault
Limit set by a system administrator restricting some file system usage
Example of qgroup (quota group) of a Btrfs filesystem
Disk_quota
Linux distribution
Retrieved February 27, 2015. Alex Polvi (March 27, 2014). "Major Update: btrfs, Docker 0.9, add users, writable /etc, and more!". coreos.com. Retrieved
Container_Linux
Linux-based operating system for network-attached storage
more. Unraid is based on Slackware Linux. Supported file systems: XFS, Btrfs, ZFS and EXT2 ,EXT3, EXT4, NTFS, ExFAT. Unraid installs to and boots from
Unraid
Tools for accessing virtual disk images
file system including: all known types of Linux filesystem (ext2/3/4, XFS, btrfs, etc.), any Windows filesystem (VFAT and NTFS), any Mac OS X and BSD filesystems
Libguestfs
Open-source, primary boot the device's operating system kernel
tree, etc., by pathname. U-Boot includes support for these filesystems: btrfs CBFS (coreboot file system) Cramfs ext2 ext3 ext4 F2FS FAT FDOS JFFS2 ReiserFS
Das_U-Boot
Linux distribution
2011-04-27 2018-07-05 2.6.37.6 Added support for GPT and utilities for the Btrfs filesystem Unsupported: 14.0 2012-09-28 2024-01-01 3.2.29 (patched to 3
Slackware
Software to automate the Linux boot process
supports booting from direct attached storage ext2, ext3, ext4 XFS, F2FS, jfs btrfs ZFS MD RAID Device mapper, dmraid, dm-integrity, dm-verity lvm device mapper
Dracut_(software)
Type of decentralized filesystem
AthFS bcachefs BFS Be File System Boot File System Byte File System (z/VM) Btrfs CVFS CXFS DFS EFS Encrypting File System Extent File System Episode ext
Clustered_file_system
Sector of a disk storage unit which is unreadable
sectors more commonly falls to the disk. Some newer file systems such as Btrfs and ZFS do not have a bad-block avoidance feature at all. Software tools
Bad_sector
File system feature
allocation) is a file system feature implemented in HFS+, XFS, Reiser4, ZFS, Btrfs, and ext4. The feature also closely resembles an older technique that Berkeley's
Allocate-on-flush
Tree-based computer data structure
Microsoft's NTFS, AIX (jfs2) and some Linux filesystems, such as Bcachefs, Btrfs and ext4, use B-trees. B*-trees are used in the HFS and Reiser4 file systems
B-tree
but many Linux distributions support some or all of ext2, ext3, ext4, Btrfs, ReiserFS, Reiser4, JFS, XFS, GFS2, OCFS2, and NILFS. It is possible to
Comparison of Linux distributions
Comparison_of_Linux_distributions
Cryptographic hash function
with BLAKE2s for hashing the entropy pool in the random number generator. btrfs file system supports BLAKE2b to checksum data and metadata. Open Network
BLAKE_(hash_function)
were used as in the DB2 database, later on better known as core of the btrfs. IBM discontinued selling the SAN File System in April 2007. It has been
IBM_SAN_File_System
Drive cloning software
space is ignored. Clonezilla supports Ext2, Ext3, Ext4, ReiserFS, XFS, JFS, Btrfs, NTFS, FAT, exFAT and more. For unsupported file systems, Clonezilla falls
Clonezilla
Linux Linux IA-32, x86-64, ARM, PowerPC, SPARC, others ext2, ext3, ext4, btrfs, F2FS, FAT, ISO 9660, UDF, NFS, and others Monolithic with modules ≈15 million
Comparison of operating systems
Comparison_of_operating_systems
Data security technology
to use file systems with full data integrity checks via checksums (like Btrfs or ZFS) on top of full disk encryption. However, cryptsetup started experimentally
Disk_encryption
Journaling file system
contained file system's metadata. This is similar to the FSID problem in btrfs. The ReiserFS successor, Reiser4, fixes this problem. ReiserFS in versions
ReiserFS
these file systems: XFS from SGI, an XFS AG can have a max size of 1TiB Btrfs JFS ext2, ext3 and ext4 use block groups "File system type and chances for
Allocation_group
Open-source storage platform
XFS was the recommended underlying filesystem for Filestore OSDs, and Btrfs could be used at one's own risk. ext4 filesystems were not recommended due
Ceph_(software)
Suite of system components for Linux
the user's home directory in various ways such as a plain directory, a btrfs subvolume, a Linux Unified Key Setup volume, an fscrypt directory, or mounted
Systemd
Application programming interface
file systems. Linux systems can include APIs for ext2, ext3, ReiserFS, and Btrfs to name a few. Some early operating systems were capable of handling only
File_system_API
Copy-on-write file system
it can address 1.84 × 1019 times more data than 64-bit systems such as Btrfs. The maximum limits of ZFS are designed to be so large that they should
ZFS
Data recovery software
NTFS5, ReFS; Mac OS: HFS/HFS Plus, HFSX, APFS; Linux: ext2, ext3, ext4, Btrfs. List of data recovery software Mircea Dragomir (9 April 2023). "Softpedia:
DMDE
Mobile operating system
Qt. Glibc is the included C Library. The first Jolla Phone in 2013 used Btrfs for the filesystem, afterwards Ext4 has been used. RPM is used as a package
Sailfish_OS
Error-detecting code for detecting data changes
CRC-32C (Castagnoli) iSCSI, SCTP, G.hn payload, SSE4.2, Btrfs, ext4, ReFS,[failed verification] VHDX, Ceph 0x1EDC6F41 0x82F63B78 0x05EC76F1
Cyclic_redundancy_check
Data structure in a Unix file system
Some Unix-style file systems such as JFS, XFS, ZFS, OpenZFS, ReiserFS, btrfs, and APFS omit a fixed-size inode table, but must store equivalent data
Inode
American technology company
servers at the DEMO Enterprise event in San Francisco. In June 2012, the Btrfs principal developers Chris Mason joined Fusion-io after leaving Oracle,
Fusion-io
Free software re-implementation of the SMB networking protocol
October 2013 Unsupported: 4.1 Support for SMB3. 4 March 2015 Unsupported: 4.2 Btrfs based file compression, snapshots and winbind integration 8 September 2015
Samba_(software)
Software library providing an embedded transactional key-value database
journal performs well, especially compared to other modern systems like Btrfs and ZFS. Zimbra has tested back-mdb vs back-hdb performance in OpenLDAP
Lightning Memory-Mapped Database
Lightning_Memory-Mapped_Database
Data segmentation technique
directly related to data striping (like snapshots, dynamic resizing, etc). Btrfs and ZFS Have RAID like features but with the security of chunk integrity
Data_striping
Data compression algorithm
The Linux kernel uses its LZO implementation in some of its features: btrfs uses LZO as a possible compression method for file system compression. initrd
Lempel–Ziv–Oberhumer
Verifies the data integrity of a storage volume
using the FAT32 filesystem. The command does not support volumes using the Btrfs filesystem, although ReactOS supports it since version 0.4.1. Defragmentation
CHKDSK
Limit Yes No Dropbox Yes Does not work on filesystems other than ext4 and btrfs Yes Yes Yes Yes No ? Yes ? No Yes Yes Yes 2 GB No Limit Yes No Dropmysite
Comparison of online backup services
Comparison_of_online_backup_services
Type of command for solid-state drive
Among the filesystems that can issue trim requests automatically are ext4, Btrfs, FAT, GFS2, JFS, XFS, ZFS, and NTFS-3G. However, in some distributions,
Trim_(computing)
Interface to device driver that appears in filesystem
AthFS bcachefs BFS Be File System Boot File System Byte File System (z/VM) Btrfs CVFS CXFS DFS EFS Encrypting File System Extent File System Episode ext
Device_file
Metadata associated with computer file that define file system behavior
File systems that support at least some attributes include ext4, XFS and btrfs. Support for "system attributes" (in which the operating system defines
File_attribute
Species of reptile
Wikidata: Q194422 Wikispecies: Alligator sinensis ADW: Alligator_sinensis CoL: BTRF ECOS: 6602 EoL: 796028 GBIF: 2441368 iNaturalist: 26156 IRMNG: 11046313 ITIS:
Chinese_alligator
Diagnostic, debugging and instructional userspace utility for Linux
supports decoding of arguments of some classes of ioctl commands, such as BTRFS_*, V4L2_*, DM_*, NSFS_*, MEM*, EVIO*, KVM_*, and several others; it also
Strace
Computer storage space allocation method
Manager version 2 Yes Yes Yes Yes Yes Yes Yes Oracle Linux 2.6 and above Btrfs Yes Yes Yes Yes Yes (not stable) Yes —N/a A file system with integrated
Logical_volume_management
Reliable digital data delivery methods on unreliable channels
recover data when a hard drive completely fails. Filesystems such as ZFS or Btrfs, as well as some RAID implementations, support data scrubbing and resilvering
Error detection and correction
Error_detection_and_correction
BTRFS
BTRFS
BTRFS
BTRFS
Girl/Female
Arabic, Muslim
Generous Woman
Girl/Female
Tamil
Kreema | கà¯à®°à®¿à®®à®¾à®‚
Girl/Female
Hindu, Indian
Tree Form of Goddess Parvati
Boy/Male
Arabic, Muslim
One who does Good
Boy/Male
Arabic, Muslim
Another Name for Prophet Muhammad (PBUH)
Girl/Female
Greek
Royal. Kingly. Regal. Derived from the same Greek word as the plant name basil. Famous bearer: St...
Girl/Female
Arabic, Muslim
Intelligent and Wise
Surname or Lastname
English and Irish
English and Irish : variant of Mullins.
Boy/Male
Muslim
Walking gently
Male
English
Medieval English variant spelling of Roman Latin Julian, JOLYON means "descended from Jupiter (Jove)."
BTRFS
BTRFS
BTRFS
BTRFS
BTRFS