On Wed, 2019-05-29 at 13:43 +0200, Dan wrote:
> Hi Jonathan,
>
> On Tue, May 28, 2019 at 8:50 PM Jonathan Carter <jcc@debian.org> wrote:
> > On 2019/05/28 18:43, Dan wrote:
> > > ZFS 0.8 has been released with lots of improvements, notably encryption.
> >
> > Yep, it's an exciting feature.
> >
> > > Sadly the Linux Kernel has introduced a commit in kernel 4.19 and 5.0
> > > that prevents ZFS from using SIMD. The result is that ZFS won't be
> > > usable in Buster. See the following issue
> > > https://github.com/zfsonlinux/zfs/issues/8793
> >
> > Buster ships zfs-dkms version 0.7.12-2 though, which works just fine on
> > buster.
>
> My message was not accurate. I think that the commit has been
> introduced in in 4.19.38 (released 2019-05-02). I think that Debian
> Buster uses 4.19.37
>
> https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.38
>
> The commit also affects ZFS 0.7 because SIMD is used for checksum operations.
>
> There might be a performance penalty in ZFS only if Debian Buster
> upgrades to 4.19.38.
Which we will, some time soon.
Ben.
--
Ben Hutchings
Horngren's Observation:
Among economists, the real world is often a special case.
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