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

[Fajar A. Nugraha]

LoL.

Go for it man, use zfs or btrfs while you're at it, and use "lxc copy" from
your own "golden" container. Then the create process will be instant using
zfs/btrfs snapshot/clone, no need to download anything.

-- 
Fajar

On Fri, May 20, 2016 at 12:22 PM, Dan Kegel <dank at kegel.com> wrote:

> Aw, I wanted to port to lxd anyway.
> On May 19, 2016 8:48 PM, "Fajar A. Nugraha" <list at fajar.net> wrote:
>
>> 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)
>>> >
>>>
>>
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