[lxc-devel] [PATCH] introduce lxcapi_rename for renaming containers

Serge Hallyn serge.hallyn at ubuntu.com
Tue Dec 17 21:25:41 UTC 2013


Quoting S.Çağlar Onur (caglar at 10ur.org):
> On Mon, Dec 16, 2013 at 2:58 PM, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> > Quoting Stéphane Graber (stgraber at ubuntu.com):
> >> On Mon, Dec 16, 2013 at 02:37:11PM -0500, S.Çağlar Onur wrote:
> >> > Hi Serge,
> >> >
> >> > On Mon, Dec 16, 2013 at 9:47 AM, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> >> > > Quoting S.Çağlar Onur (caglar at 10ur.org):
> >> > >> lxcapi_rename implemented as a convenience function as lately
> >> > >> I find myself in a need to rename a container due to a
> >> > >> typo in its name. I could have started over but didn't want
> >> > >> to spend more time (to installing extra packages and changing
> >> > >> their configuration) on it.
> >> > >>
> >> > >> c->clone() followed by c->destroy() did the trick for me and I
> >> > >> though it could be helpful to the other people, so here it is.
> >> > >>
> >> > >> Signed-off-by: S.Çağlar Onur <caglar at 10ur.org>
> >> > >
> >> > > Looks ok, but should you be specifying LXC_CLONE_COPYHOOKS |
> >> > > LXC_CLONE_KEEPMACADDR  as clone flags?
> >> >
> >> > I thought I should to be keeping the container intact as much as I
> >> > can, assuming something might be using those values (like
> >> > redhat/centos/fedora ifcfg-* files where you could specify HWADDR)
> >>
> >> I'm not sure about LXC_CLONE_COPYHOOKS but LXC_CLONE_KEEPMACADDR should
> >> actually go towards your goal of having the copy be as close to the
> >> original as possible (without it, the mac address would be changed).
> >
> > Yeah.  Çağlar, lemme know if you agree.
> 
> Sure, you can drop LXC_CLONE_COPYHOOKS or alternatively I can send a
> new patch tomorrow (I'll be offline rest of the day)

Gah, I'm sorry.  Firstly I missed that you were already doing those.
Secondly, my delay has kept api_rename out of the beta1.  I've pushed
it as is.  I'm still undecided about copyhooks, but the real answer
there is that lxcapi_clone should copy any hooks which are under
the container's directory unconditionally.

-serge


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