From: Christian Kniep <ckniep@gaikai.com>
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Date: Fri, 2 Sep 2016 01:25:05 -0700
Message-ID: <CA+x9LCPdxK3qavCSur3pN9ww2wDZugJDa=-ExNqiNn89S0K1eQ@mail.gmail.com>
Subject: [alpine-devel] Using df with OverlayFS
To: alpine-devel@lists.alpinelinux.org
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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 with
overlay as a filesystem and therefore is shy providing output=E2=80=A6 :)

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 backend,
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 somehow
fiddle around with the APKBUILD file of coreutils
<http://git.alpinelinux.org/cgit/aports/tree/main/coreutils/APKBUILD>=E2=80=
=A6

Cheers
Christian

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.error { color:#AA0000; }</style></head><body style=3D"word-wrap:break-word=
"><div class=3D"bloop_markdown"><p>Hey there,</p>

<p>I am running an alpine container on a Linux system that uses overlay as =
docker storage backend.</p>

<p>My suspicion would be, that the <code>df</code> command does not no how =
to deal with <code>overlay</code> as a filesystem and therefore is shy prov=
iding output=E2=80=A6 :)</p>

<pre><code>gentoo1 ~ # docker info |grep &#39;Storage Driver&#39;
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% /
</code></pre>

<p>If I run <code>df</code> on my Ubuntu16 reference box - using <code>AUFS=
</code> as a storage backend, I get an output.</p>

<pre><code>root@swarm0:~# docker info |grep &#39;Storage Driver&#39;
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% /
</code></pre>

<p>How do I get overlay into this little <code>df</code> command of mine?
I guess somehow fiddle around with the <a href=3D"http://git.alpinelinux.or=
g/cgit/aports/tree/main/coreutils/APKBUILD">APKBUILD file of coreutils</a>=
=E2=80=A6</p>

<p>Cheers<br>
Christian</p>

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