Re: [PATCH V10] Add support for BTRFS raid5/6 to GRUB

[Daniel Kiper <dkiper@net-space.pl>]

On Mon, Oct 22, 2018 at 07:49:40PM +0000, Nick Terrell wrote:
>
>
> > On Oct 22, 2018, at 4:02 AM, Daniel Kiper <dkiper@net-space.pl> wrote:
> >
> > On Thu, Oct 18, 2018 at 07:55:32PM +0200, Goffredo Baroncelli wrote:
> >>
> >> Hi All,
> >>
> >> the aim of this patches set is to provide support for a BTRFS raid5/6
> >> filesystem in GRUB.
> >>
> >> The first patch, implements the basic support for raid5/6. I.e this works when
> >> all the disks are present.
> >>
> >> The next 5 patches, are preparatory ones.
> >>
> >> The 7th patch implements the raid5 recovery for btrfs (i.e. handling the
> >> disappearing of 1 disk).
> >> The 8th patch makes the code for handling the raid6 recovery more generic.
> >> The last one implements the raid6 recovery for btrfs (i.e. handling the
> >> disappearing up to two disks).
> >>
> >> I tested the code in grub-emu, and it works both with all the disks,
> >> and with some disks missing. I checked the crc32 calculated from grub and
> >> from linux and these matched. Finally I checked if the support for md raid6
> >> still works properly, and it does (with all drives and with up to 2 drives
> >> missing)
> >>
> >> Comments are welcome.
> >
> > In general whole patch series LGTM. +/- some nit picks including changes
> > for patch #7. If you are OK with them and there are no objections then
> > I will apply the patches in a week or so.
>
> Awesome! I'll look for the update and send an rebased version of the zstd
> patch set when it is out.

v11 pushed.

Goffredo, thank you for doing the work.

Nick, you can go ahead and rebase yours patchset.

Daniel