[lxc-users] Preparing for LXC 1.0.8

[Stéphane Graber]

Hi,

This is a known issue of that particular 3.16 kernel, a fix will be
included in the next kernel update.

Until then, you can downgrade to an earlier 3.16 or upgrade to the 3.19 kernel.

On Wed, Sep 02, 2015 at 10:32:43AM -0700, Ranjib Dey wrote:
> im hitting the sysfs mount failure due to permissions, for both privileged
> and unprivileged unprivileged containers
> 
> lxc: 1.0.7+stable~20150828-2252-0ubuntu1~trusty
> kernel: 3.16.0-46
> ubuntu 14.04.03
> 
> 
> 
> On Wed, Sep 2, 2015 at 4:54 AM, KATOH Yasufumi <karma at jazz.email.ne.jp>
> wrote:
> 
> > >>> On Mon, 31 Aug 2015 13:46:01 -0400
> >     in message   "Re: [lxc-users] Preparing for LXC 1.0.8"
> >                   Stéphane Graber-san wrote:
> >
> > > On Tue, Sep 01, 2015 at 03:01:07AM +1000, overlay fs wrote:
> > > > The bug,
> > > >
> > > > 'Failed to whiteout' error in Trusty with 3.19 kernel
> > > >
> > https://lists.linuxcontainers.org/pipermail/lxc-users/2015-August/009854.html
> > > > https://bugs.launchpad.net/lxc/+bug/1486073
> > > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490267
> > > >
> > > > is present in lxc versions 1.0.7 and 1.0.8, but seems to have been
> > resolved
> > > > in version 1.1.  While this bug is not stricly a regression in
> > lxc-1.0.8,
> > > > the bug was latent prior to ubuntu-14.04.3 since previous 14.04.x
> > releases
> > > > did not use the 3.19 kernel.
> >
> >   :(snip)
> >
> > > If the whiteout problem is a kernel bug, there's little we can do, if
> > > it's a lxc bug, then we should fix this and get the fix into the
> > > stable-1.0 branch.
> >
> > I tried running lxc-1.0.7 on 3.19.8 kernel.
> >
> > * lxc-1.0.7 with patch:
> >
> > https://github.com/lxc/lxc/commit/388db0d9ebf1b24c538a68813077b7ace31db68f
> >   (The module name of 3.19 kernel is "overlay". So we need this patch.)
> > * vanilla kernel 3.19.8 with patch:
> >   https://gist.github.com/tenforward/6be31831135ad942049d
> >   (This patch allow root in userns to mount overlayfs.)
> >
> > Unpriv overlayfs container work fine.
> >
> > $ uname -a
> > Linux enterprise 3.19.8 #2 SMP PREEMPT Wed Sep 2 17:54:50 JST 2015 x86_64
> > GNU/Linux
> > $ lxc-start --version
> > 1.0.7
> > $ lxc-clone -o ct01 -n test -s -B overlayfs
> > Created container test as snapshot of ct01
> > $ lxc-start -n test -d
> > $ lxc-attach -n test -- apt-get update
> > Ign http://archive.ubuntu.com trusty InRelease
> > Ign http://security.ubuntu.com trusty-security InRelease
> > Ign http://archive.ubuntu.com trusty-updates InRelease
> >   :(snip)
> > Fetched 2244 kB in 7s (320 kB/s)
> > Reading package lists... Done
> >
> > I guess it is the bug of linux-lts-vivid kernel in Ubuntu.
> >
> > I also try running HEAD of stable-1.0(1.0.8). The behavior is the
> > same.
> >
> > Thanks,
> > KATOH Yasufumi
> > _______________________________________________
> > lxc-users mailing list
> > lxc-users at lists.linuxcontainers.org
> > http://lists.linuxcontainers.org/listinfo/lxc-users

> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users


-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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