whatarebtrfssnapshots

2022年12月30日—Btrfssnapshotsworkdifferentthanfilecopies:Theykeepreferencestocurrentandpastinodesinstead.Whenyouappendedthechangetothe ...,2023年11月1日—Asnapshotisessentiallyasubvolumewithastartingpointcopiedfromtheoriginalsubvolume.It'simportanttonotethatBtrfssubvolumesare ...,2022年4月5日—ZFSisafantasticfilesystemthatoffersmanyofthefeaturesboastedbybtrfs,andsomethatbtrfsdoesn'thave.ZFSalsos...

參考資訊如下
Working with Btrfs

2022年12月30日 — Btrfs snapshots work different than file copies: They keep references to current and past inodes instead. When you appended the change to the ...

Understand Btrfs File System (Copy On Write, Sub

2023年11月1日 — A snapshot is essentially a subvolume with a starting point copied from the original subvolume. It's important to note that Btrfs subvolumes are ...

Oversimplified guide into snapshots on the btrfs filesystem

2022年4月5日 — ZFS is a fantastic filesystem that offers many of the features boasted by btrfs , and some that btrfs doesn't have. ZFS also supports snapshots.

Btrfs

5 天前 — Snapshots. A snapshot is simply a subvolume that shares its data (and metadata) with some other subvolume, using Btrfs's COW capabilities. See ...

How Btrfs protects your company's data

Snapshots and data protection ... The Btrfs file system introduces a powerful snapshot feature allowing you to create a point-in-time copy of an entire shared ...

Btrfs

Btrfs is intended to address the lack of pooling, snapshots, checksums, and integral multi-device spanning in Linux file systems. ... Chris Mason, the principal ...

I fundamentally don't understand snapshots. What do they " ...

2021年7月3日 — Snapshots are a reference copy of a BtrFS tree which shares data (and metadata) with a parent subvolume. When the data in that subvolume changes ...

Btrfs vs ZFS 實現snapshot 的差異

2020年2月19日 — ZFS 不支持對單個文件關閉CoW ，所有文件（以及所有zvol）都經過DMU 層有CoW 語義，這對一些應用場景有性能影響。btrfs 可以對單個文件關閉CoW ，但是關閉 ...

The Basic Concepts of Snapper

have I misunderstood the point of btrfs snapshots?

2023年5月25日 — The top level (root) of btrfs is a subvolume that can be snapshotted. There's nothing wrong with snapshotting it and replicating the resulting ...