On Wed, Apr 18, 2018 at 10:38 AM, Austin S. Hemmelgarn <ahferroin7@xxxxxxxxx
> wrote:
> For reference, the zstd compression in BTRFS uses level 3 by default (as
> does zlib compression IIRC), though I'm not sure about lzop (I think it
> uses the lowest compression setting).
>
The user space tool, zstd, does default to 3, according to its man page.
-# # compression level [1-19] (default: 3)
However, the kernel is claiming it's level 0, which doesn't exist in the
man page. So I have no idea what we're using. This is what I get with mount
option compress=zstd
[ 4.097858] BTRFS info (device nvme0n1p9): use zstd compression, level 0
--
Chris Murphy
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