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Apple File System

developer.apple.com

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Re: Apple File System

#2
Siracusa will finally be happy. ;-)

Sounds an awful like like ZFS (zero-cost clones, read-only snapshots) but could it be? I would imagine they'd start from scratch to due IP issues.

Clearly this is immature technology they want to get out for testing/evaluation before it's fully adopted even into their own products. (See below.)

- - - from the release notes - - -

As a developer preview of this technology, there are currently several limitations:

Startup Disk: APFS volumes cannot currently be used as a startup disk.

Case Sensitivity: Filenames are currently case-sensitive only.

Time Machine: Time Machine backups are not currently supported.

FileVault: APFS volumes cannot currently be encrypted using FileVault.

Fusion Drive: Fusion Drives cannot currently use APFS.

Re: Apple File System

#5
> It is optimized for Flash/SSD storage and features strong encryption, copy-on-write metadata, space sharing, cloning for files and directories, snapshots, fast directory sizing, atomic safe-save primitives, and improved file system fundamentals.

\o/ Hallelujah, something modern!

Re: Apple File System

#8
post #3

Another proprietary filesystem? I was really hoping they'd adopt ZFS fully.

Apple says they intend to open-source the file system in the docs.

Open Source: "An open source implementation is not available at this time. Apple plans to document and publish the APFS volume format when Apple File System is released in 2017."

Re: Apple File System

#10
post #5

> It is optimized for Flash/SSD storage and features strong encryption, copy-on-write metadata, space sharing, cloning for files and directories, snapshots, fast directory sizing, atomic safe-save primitives, and improved file system fundamentals. \o/ Hallelujah, something modern!

I was excited to until I read the limitations section. Can't be used as the startup disk and doesn't work with time machine.

Hopefully this with change in the next macOs release.

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