Re: zfs questions

hi,

On Fri, Feb 20, 2026 at 10:41 PM Greg Troxel <[email protected]> wrote:
>
> Takashi YAMAMOTO <[email protected]> writes:
>
> > * is anyone using zfs in netbsd seriously? :-)
>
> I am using it on my desktop, and a on a dom0 hosting pkg builders.
>
> It mostly works, except that one must be careful not to simultaneously
>
>   run low on memory
>   run programs that dirty mmap'd pages (syncthing!)

is it enough to run syncthing from pkgsrc?
i tried to make it receive 1024 * 1GB files. it just worked fine for me.

>
> and probably also not
>
>   run really low on memory such that there is a lot of paging
>
>
>
> As I undertand things, from chuq@ figuring out a deadlock after much
> offlist discussion with Brad, there is a deadlock from trying to free
> pages from the arc and trying to write dirty pages.  The fix is to have
> two threads for this, instead of one doing both, or at least that's how
> FreeBSD does it.
>
> > * does anyone have a plan to update the codebase to recent openzfs?
>
> No, but updating would be great.   However, my impression is that the
> zfs world is getting messy and I am not sure that FreeBSD is really
> based on openzfs as clearly as I think you might think.  Please just
> take this as a caution that the situation seems more complicated the
> last few years than it was maybe 5y ago.