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Btrfs

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Btrfs is intended to address the lack of pooling, snapshots, checksums, and integral multi-device spanning in Linux file systems.
It is easy to set up and use BTRFS. In this simple introduction, we're going to set up BTRFS under Funtoo Linux using an existing {{c|debian-sources}} or {{c|debian-sources-lts}} kernel, like the one that comes pre-built for you with Funtoo Linux, and we will also be using our BTRFS storage pool for storing data that isn't part of the Funtoo Linux installation itself. Funtoo Linux will boot from a non-BTRFS filesystem, and as part of the initialization process will initialize our BTRFS storage pool and mount it at the location of our choice.
== Installation ==
...
/dev/sdxy on /data type btrfs (rw,relatime,ssd,space_cache,subvolid=5,subvol=/)
}}
 
To automatically mount this volume after reboot you need to add a simple fstab entry:
 
{{console|body=
/dev/sdxy /data btrfs defaults 0 0
}}
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