Date: Wed, 7 Jun 2017 10:12:57 +0200
From: Lennart Poettering <mzxreary@0pointer.de>
To: Steve Dickson <SteveD@RedHat.com>
Cc: NeilBrown <neilb@suse.com>, systemd-devel@freedesktop.org,
        linux-nfs@vger.kernel.org
Subject: Re: [PATCH] nfs.man: document incompatibility between "bg" option
 and systemd.
Message-ID: <20170607081257.GH27006@gardel-login>
References: <87lgpkgwrw.fsf@notabene.neil.brown.name>
 <20170529133814.GC17967@gardel-login>
 <87tw43fgrf.fsf@notabene.neil.brown.name>
 <89415cad-331e-bac6-7fd1-dffa058726de@RedHat.com>
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In-Reply-To: <89415cad-331e-bac6-7fd1-dffa058726de@RedHat.com>
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On Tue, 06.06.17 14:07, Steve Dickson (SteveD@RedHat.com) wrote:

> Hello,
> 
> On 05/29/2017 06:19 PM, NeilBrown wrote:
> > 
> > Systemd does not, and will not, support "bg" correctly.
> > It has other, better, ways to handle "background" mounting.
> The only problem with this is bg mounts still work at least
> up to 4.11 kernel... 
> 
> It appears there is a problem with a 4.12 kernel. The mount no 
> longer errors out with ECONNREFUSED it just hangs in the 
> kernel trying forever... It sounds like a bug to me but 
> maybe that change was intentional.. Anna?? Trond???
> 
> So I'm a bit hesitant to commit this since not accurate, yet.
> 
> Finally, the whole idea of systemd randomly/silently 
> strip off mount options is crazy... IMHO... 
> 
> Just because a concept that has been around for years
> does not fix well in the systemd world it gets
> rip out??? IDK... but I think we can do better than that.

Well "bg" doesn't really work on systemd systems, and this was never
different, hence I think it's only fair to document that it is
incompatible with systemd. In addition, I have the suspicion it is not
used very widely, since I never actually got complaints about it.

Lennart

-- 
Lennart Poettering, Red Hat