Re: ZFS in Buster
- Date: Wed, 29 May 2019 14:52:51 +0100
- From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
- Subject: Re: ZFS in Buster
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@xxxxxxxxxx> 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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