Re: [dm-devel] WANTED new maintainer for Linux/md (and mdadm)
From: Jes Sorensen
Date: Fri Jan 08 2016 - 15:28:22 EST
NeilBrown <neilb@xxxxxxx> writes:
> On Thu, Jan 07 2016, Jes Sorensen wrote:
>> Brassow Jonathan <jbrassow@xxxxxxxxxx> writes:
>>> Many thanks Neil for all the work youâve done and the help you gave me
>>> while working on the DM/MD interactions bits. Iâm happy you are
>>> sticking around for the raid1-cluster and raid5-journal bits and Iâm
>>> interested to see what comes out of those.
>>> I know there are a number of folks around Red Hat who are capable and
>>> possibly interested to share the load. They should be back from PTO
>>> soon and weâll make sure they know about the opportunity.
>> Thanks Neil!
>> I mentioned to Neil last year that I could probably be convinced,
>> bribed, shamed, into maintaining mdadm.
> I realise that is somewhat tongue-in-cheek, but I am certainly not
> looking for someone who needs to be convinced, bribed, or shamed. I'm
> hoping for someone who will weigh the pros and cons, decide this is a
> contribution they are willing (and maybe even eager) to make, and will
> step up and do so. And I suspect that behind that facade of
> reluctance, that is what you are really offering. Thanks.
> I propose to make one last release of mdadm either next week or the last
> week of January. I plan to call it "3.4" in acknowledgment of the new
> cluster and raid5-journal functionality.
> If you were to take it from there, I would be grateful.
I wouldn't have offered to take on mdadm if I hadn't meant it, even if I
like making the wording sound silly :) I feel I can do a decent job at
it and the task should be reasonable in scope. If someone is dying to
take it on, I am not going to stand in their way, but I feel mdadm needs
a maintainer and it's a worthy effort.
We'll have to figure out the logistics, and I'd like to coordinate with
who takes on drivers/md
>> The kernel MD stack I think really needs a team to run it. There is just
>> too much internal knowledge sitting in Neil's head and I personally am a
>> little scared of taking on that. Shaohua Li would be a good candidate
>> for that team IMHO.
>>>> On Dec 21, 2015, at 12:10 AM, NeilBrown <neilb@xxxxxxxx> wrote:
>>>> I became maintainer for md (Linux Software RAID) in late 2001 and on
>>>> the whole it has been fun and a valuable experience. But I have been
>>>> losing interest in recent years (https://lwn.net/Articles/511073/) and
>>>> as was mentioned at the kernel summit, I would like to resign. Some
>>>> years ago I managed to hand over nfsd to the excellent Bruce Fields,
>>>> but I do not seem to have the gift that Linus has of attracting
>>>> maintainers. While there are a number of people who know quite a bit
>>>> about md and/or have contributed to development, there is no obvious
>>>> candidate for replacement maintainer - no one who has already been
>>>> doing significant parts of the maintainer role.
>>>> So I have decided to fall back on the mechanism by which I ended up
>>>> being maintainer in the first place. I will create a vacuum and hope
>>>> someone fills it (yes: I was sucked-in....). So as of 1st February
>>>> 2016 I will be resigning.
>>>> At the kernel summit in October Linus talked about the value of
>>>> maintainership teams (https://lwn.net/Articles/662979/). I think it
>>>> would be great if a (small) team formed to continue to oversee md
>>>> rather than just a single individual (or maybe the dm team could extend
>>>> to include md??). If I had managed to be part of a team rather than
>>>> "going it alone" for so long, I might feel less tired of the whole
>>>> thing now.
>>>> I don't see it as my place to appoint that team or any individuals, or
>>>> even to nominate any candidates. A very important attribute of a
>>>> maintainer is that they need to care about the code and the subsystem
>>>> and I cannot tell other people to care (or even know if they do). It
>>>> is really up to individuals to volunteer. A few people have been
>>>> mentioned to me in earlier less-public conversations. Any of them may
>>>> well be suitable, but I would rather they named themselves if
>>>> So I'm hoping to get one or more volunteers to be maintainer:
>>>> - to gather and manage patches and outstanding issues,
>>>> - to review patches or get them reviewed
>>>> - to follow up bug reports and get them resolved
>>>> - to feed patches upstream, maybe directly to Linus,
>>>> maybe through some other maintainer, depending on what
>>>> relationships already exist or can be formed,
>>>> - to guide the longer term direction (saying "no" is important
>>>> - to care,
>>>> but also to be aware that maintainership takes real effort and time, as
>>>> does anything that is really worthwhile.
>>>> This all applies to mdadm as well as md (except you would ultimately
>>>> *be* upstream for mdadm, not needing to send it anywhere). Even if a
>>>> clear team doesn't form it would be great if different people
>>>> maintained mdadm and md.
>>>> One part of the job that I have put a lot of time in to is following
>>>> the linux-raid@xxxxxxxxxxxxxxx list and providing support. This makes
>>>> people feel good about md and so more adventurous in using it.
>>>> Consequently I tend to hear about bugs and usability issues nice and
>>>> early (well before paying customers hit them in most cases) and that is
>>>> a big win.
>>>> In recent times I've been doing less of this and have been absolutely
>>>> thrilled that the gap has been more than filled by other very competent
>>>> community members. Not developers particular but a number of md users
>>>> have been providing excellent support. I'd particularly like to
>>>> high-light Phil Turmel who is very forthcoming with excellent advice,
>>>> but he is certainly not the only one who deserves a lot of thanks.
>>>> So "Thank you" to everyone who answers questions on linux-raid.
>>>> This would be a good place for any future maintainer to hang out to
>>>> receive wisdom as well as to provide support.
>>>> I will still be around. I can certainly help out in some sort of
>>>> mentor role, and can probably be convinced to review patches and
>>>> comment on designs. But I really want to head towards spending less
>>>> time on md (there are so many other interesting things to learn about).
>>>> So: if anyone is interested - please announce yourself, ask questions
>>>> and start doing things. I have no clear idea about how a transition
>>>> will happen. That is really up to you (plural). Take the bull by the
>>>> horns and start *being* a maintainer(team). I won't get in your way
>>>> and I'll help where I can.
>>>> P.S. I'm committed to continue to work with the raid5-journal effort
>>>> From Facebook and the raid1-cluster effort from SUSE and the
>>>> line-in-the-sand of 1st February won't affect my support for those.
>>>> dm-devel mailing list
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