[lxc-users] Disk space not released after deleting rootfs image

[Cal Leeming [Simplicity Media Ltd]]

Well this is embarrassing, I just tried on a clean `Ubuntu Precise` install
and I was unable to reproduce the problem.

For now this can be considered resolved, as there must be something on my
test box which is causing the problem, I'll report back once I've found the
root cause.

Really sorry for wasting peoples time with this, in hindsight I should have
checked on a clean install first, rookie mistake.

Thank you to everyone for the feedback/advice, really appreciate it.

Cal






On Fri, Dec 13, 2013 at 7:20 PM, Serge Hallyn <serge.hallyn at ubuntu.com>wrote:

> Quoting Cal Leeming [Simplicity Media Ltd] (
> cal.leeming at simplicitymedialtd.co.uk):
> > On Fri, Dec 13, 2013 at 9:46 AM, Jinn Ko <lxc-users at mx.ixido.net> wrote:
> >
> > >  When you run 'lsof | grep /tmp/lol/disk2.img' does that say
> '(deleted)'
> > > next to it?  If so, it should also identify the process id holding the
> file
> > > handle open, which is preventing the release of the space.
> > >
> >
> > No, there is no entry in lsof for that file.
> >
> > It also doesn't seem to show any entry even when lxc-start is running.
> I'm
> > thinking perhaps it doesn't show up in here because it's a kernel module
> > maybe, but my knowledge on that isn't great.
> >
> >
> > >
> > > From the log output it looks like the failure to mount /proc inside
> your
> > > container causes a failure, so I haven't understood how it is that
> > > lxc-execute works.  Therefore I'm wondering if the failure handling is
> > > missing the logic to release the mounted image.  I'm curious to know
> if the
> > > space is released when /proc is properly mounted and the container
> comes up
> > > cleanly.
> > >
> >
> > Sadly I'm still able to reproduce this problem when the container comes
> up
> > cleanly.
> >
> > Scenario here;
> > http://pastebin.com/VB2iRQ6z
>
> I tried to reproduce this on trusty (3.12 kernel) but the file went away
> fine for me.
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