Does BTRFS's compress logic apply when defragmenting?

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When mounting a BTRFS filesystem with the compression option, BTRFS will [selectively compress files depending on whether they are deemed compressible or not](https://btrfs.wiki.kernel.org/index.php/Compression#incompressible) . Does this same logic apply when defragmenting? Or does the following force compression?:

btrfs filesystem defragment -r -czstd /data

# btrfs version
btrfs-progs v4.19

Asked by dippynark (337 rep)

Sep 4, 2019, 12:19 PM
Last activity: May 13, 2020, 08:43 PM

Does BTRFS's compress logic apply when defragmenting?

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