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btrfs

Btrfs is a modern copy on write (CoW) filesystem for Linux aimed at implementing advanced features while also focusing on fault tolerance, repair and easy administration.

Free Open Source
Windows
Linux

As of version 5.0 of the Linux kernel, Btrfs implements the following features:

Mostly self-healing in some configurations due to the nature of copy-on-write
Online defragmentation and an autodefrag mount option
Online volume growth and shrinking
Online block device addition and removal
Online balancing (movement of objects between block devices to balance load)
Offline filesystem check
Online data scrubbing for finding errors and automatically fixing them for files with redundant copies
RAID 0, RAID 1, and RAID 10
Subvolumes (one or more separately mountable filesystem roots within each disk partition)
Transparent compression via zlib, LZO and (since 4.14) ZSTD, configurable per file or volume
Atomic writable (via copy-on-write) or read-only Snapshots of subvolumes
File cloning (copy-on-write on individual files) via cp --reflink <source file> <destination file>[39]
Checksums on data and metadata (CRC-32C)
In-place conversion from ext3/4 to Btrfs (with rollback). This feature regressed around btrfs-progs version 4.0, rewritten from scratch in 4.6.
Union mounting of read-only storage, known as file system seeding (read-only storage used as a copy-on-write backing for a writable Btrfs)
Block discard (reclaims space on some virtualized setups and improves wear leveling on SSDs with TRIM)
Send/receive (saving diffs between snapshots to a binary stream)
Incremental backup
Out-of-band data deduplication (requires userspace tools)
Ability to handle swap files and swap partitions... More Info »

Links to official btrfs sites

Official Website GitHub

Features

Data Redundancy Parity Drives Add a feature

Category

Tags

filesystem hard-disk raid storage-pool storage-pooling

btrfs was added by endolith in Jan 2020 and the latest update was made in Jan 2020. The list of alternatives was updated Jan 2020. It's possible to update the information on btrfs or report it as discontinued, duplicated or spam.

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