On Fri, 26 Jun 2020 at 11:36, Solomon Peachy <pi...@shaftnet.org> wrote:
> On Fri, Jun 26, 2020 at 11:15:54AM -0400, Matthew Miller wrote:
> > On Fri, Jun 26, 2020 at 11:13:39AM -0400, Josef Bacik wrote:
> > > Not Fedora land, but Facebook installs it on all of our root
> > > devices, so millions of machines.  We've done this for 5 years.
> > > It's worked out very well. Thanks,
> >
> > Josef, I'd love to hear your comments on any differences between that
> > situation and the typical laptop-user case for Fedora desktop systems.
> > Anything we should consider?
> And, perhaps more crucially, what subset of btrfs features are in use.
> (Plus perhaps the underlying hardware; I suspect the server-class
> hardware facebook uses is a grade above the typical desktop..)

Actually the opposite. The facebook hardware is built at scale on
nearly the cheapest it can be. That said, they have a different fail
scale than personal hardware.. they are ok if entire racks or areas in
a DC blow themselves up because the data is spread out. That is
different from a laptop where the failure means loss of everything
since the last backup (aka never).  So what is stored on the systems
is a different usecase and how it is considered safe is different.
That said they have probably put in a lot more on scale testing of the
filesystem than Fedora could do.

[this is neither an endorsement or hatred of the proposal.. ]


Stephen J Smoogen.
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