[lxc-users] lxc-create fragile with respect to network failures during package download?

[Fajar A. Nugraha]

On Fri, May 20, 2016 at 4:02 AM, Dan Kegel <dank at kegel.com> wrote:

> OK, thanks.  I'll port to lxd at some point.  Until then, I'll add a retry
> loop.
>
>
You shouldn't need to switch to lxd JUST to use a download template (or
images, in lxd term). Simply "lxc-create -t download ..."

But yeah, your temporary-solution of retry loop should also work for the
purpose of 'work around a failed package download'

-- 
Fajar



> On Thu, May 19, 2016 at 2:49 AM, Fajar A. Nugraha <list at fajar.net> wrote:
> > On Thu, May 19, 2016 at 1:50 AM, Dan Kegel <dank at kegel.com> wrote:
> >>
> >> The first time, it failed with
> >> W: Couldn't download package insserv (ver 1.14.0-5ubuntu3 arch amd64)
> >> I: Retrieving iproute2 4.3.0-1ubuntu3
> >> W: Couldn't download package iproute2 (ver 4.3.0-1ubuntu3 arch amd64)
> >> ...
> >> E: Couldn't download packages: iproute2 insserv
> >> Delete subvolume (no-commit): '/var/cache/lxc/xenial/partial-amd64'
> >> lxc-create: lxccontainer.c: create_run_template: 1290 container
> >> creation template for rbb-ubu1604-1-ubu1604 failed
> >>
> >
> >> Either way, should lxc-create be so willing to abort on package
> >> download failure, or should it sleep and retry a bit somehow?
> >
> >
> >
> > IMHO that behavior is correct. The ubuntu template uses debootstrap, so
> > whatever you're seing is debootstrap's response.
> >
> > I suggest you use the download template instead (-t download), which
> would
> > basically get a tar file with preconfigured packages. It would help if
> your
> > problem was on 'creating new connection phase' (which sometimes would
> happen
> > if say ... your ISP employs a transparent http cache) or 'partial
> > inconsistent mirror' (since you'd only be getting a few files), plus
> it'd be
> > much faster (no need for package install and configure phase after
> download)
> >
> > --
> > Fajar
> >
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