Date: Thu, 8 Sep 2016 20:52:30 +0200
From: Natanael Copa <ncopa@alpinelinux.org>
To: Christian Kniep <ckniep@gaikai.com>
Cc: Justin Cormack <justin@specialbusservice.com>, Alpine Devel List
 <alpine-devel@lists.alpinelinux.org>
Subject: Re: [alpine-devel] Using df with OverlayFS
Message-ID: <20160908205230.36f9e564@ncopa-desktop.copa.dup.pw>
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The problem was that line buffer in getmntent(3) in musl libc was too small.

I have sent a patch upstream:

http://www.openwall.com/lists/musl/2016/09/08/1

Once its reviewed I'll add it to Alpine.

-nc

On Thu, 8 Sep 2016 15:13:27 +0200
Christian Kniep <ckniep@gaikai.com> wrote:

> Hey Justin,
>=20
> thanks for getting back to me. I have created a package on an overlay host
> and using it as an workaround.
> https://github.com/qnib/alpn-hadoop/blob/master/Dockerfile#L15-L16
>=20
> But I am happy to get rid of it, once the issue is fixed. :)
>=20
> Thanks
> Christian
>=20
> On Thu, Sep 8, 2016 at 12:19 PM, Justin Cormack <
> justin@specialbusservice.com> wrote: =20
>=20
> > There is an issue already http://bugs.alpinelinux.org/issues/5703 and
> > this should be fixed shortly.
> >
> > Justin
> >
> >
> > On 2 September 2016 at 09:25, Christian Kniep <ckniep@gaikai.com> wrote=
: =20
> > > Hey there,
> > >
> > > I am running an alpine container on a Linux system that uses overlay =
as
> > > docker storage backend.
> > >
> > > My suspicion would be, that the df command does not no how to deal wi=
th
> > > overlay as a filesystem and therefore is shy providing output* :)
> > >
> > > gentoo1 ~ # docker info |grep 'Storage Driver'
> > > Storage Driver: overlay
> > > gentoo1 ~ # docker run -ti --privileged alpine df -h
> > > Filesystem                Size      Used Available Use% Mounted on
> > > gentoo1 ~ # docker run -ti --privileged ubuntu df -h
> > > Filesystem      Size  Used Avail Use% Mounted on
> > > overlay         1.4T  3.6G  1.4T   1% /
> > >
> > > If I run df on my Ubuntu16 reference box - using AUFS as a storage =20
> > backend, =20
> > > I get an output.
> > >
> > > root@swarm0:~# docker info |grep 'Storage Driver'
> > > WARNING: No swap limit support
> > > Storage Driver: aufs
> > > root@swarm0:~# docker run -ti alpine df -h
> > > Filesystem                Size      Used Available Use% Mounted on
> > > none                     77.2G     26.3G     47.0G  36% /
> > >
> > > How do I get overlay into this little df command of mine? I guess som=
ehow
> > > fiddle around with the APKBUILD file of coreutils*
> > >
> > > Cheers
> > > Christian
> > >
> > >
> > >
> > > =20
> >
> >
> > ---
> > Unsubscribe:  alpine-devel+unsubscribe@lists.alpinelinux.org
> > Help:         alpine-devel+help@lists.alpinelinux.org
> > ---
> >
> > =20



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