On Wed, 25 Sep 2019 at 12:58, Simon Slavin <slav...@bigfraud.org> wrote:

> When I first learned the SQLite had problems with Network File Systems I
> read a ton of stuff to learn why there doesn't seem to be a Network File
> Systems that implements locking properly. <snip>
>
> Still, I wonder why someone working on a Linux network file system, or
> APFS, or ZFS, hasn't done it.
>

I'm not sure what your definition of "locking properly" is or when your
research was done, but POSIX advisory locks¹ work just fine on linux over
nfs (since at least v3) and lustre.

¹ That's the F_SETLK/F_GETLK/F_SETLKW commands via the fcntl() syscall,
which is also sqlite's default locking mechanism under UNIX.

-Rowan
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