[Users] 'vzctl start CTID --wait' hangs

[Kir Kolyshkin]

On 01/13/2014 10:08 AM, Kir Kolyshkin wrote:
> On 01/13/2014 01:20 AM, Roman Haefeli wrote:
>> On Wed, 2014-01-08 at 23:57 -0800, Kir Kolyshkin wrote:
>>> On 01/08/2014 08:36 AM, Roman Haefeli wrote:
>>>> Hi
>>>>
>>>> When I start Debian 7 containers with the '--wait' option, it does 
>>>> start
>>>> the CT, but the vzctl command never returns. The same works fine with
>>>> Debian 6 containers.
>>>>
>>>> I figured that 'vzctl start CTID --wait' usually adds a line to the
>>>> CT's /etc/inittab:
>>>>
>>>> vz:2345:once:touch /.vzfifo
>>>>
>>>> However, such a line is never added to Debian 7 CTs. On Debian 6 CTs,
>>>> this line is automatically added whenever the CT is started, even 
>>>> if it
>>>> has been removed manually.
>>>>
>>>> A work-around is to add the line manually to /etc/inittab, but I still
>>>> wonder why the automatism doesn't work for Debian 7 CTs.
>>>>
>>> Please file a bug for vzctl, I will take a look soon.
>> Thanks for addressing this issue. In your notes on bugzilla
>
> [ Just for the sake of people reading it: 
> https://bugzilla.openvz.org/2859 ]
>
>>   you mention
>> that the original reason for the hangs is the missing lo interface.
>
> Yes, this is what I found with the official Debian 7 templates (that I 
> will fix soon).
>
>>   In
>> fact, on the CT I tested lo was configured properly and up and running.
>>
>> I should mention that I made the template myself according to the
>> instructions found here [1].
>
> Hey, this makes it a perfect example of how to NOT file bug reports! ;-)
>
>>   When you mentioned the scripts
>> in /etc/init/ I found that all our flawlessly running Debian 6 CTs don't
>> have this folder at all. I removed it completely also in the Debian 7 CT
>> and from then on I was able to start it flawlessly with the --wait flag.
>
> Good that you have mentioned it, now I see that /etc/init existence 
> doesn't
> mean we have upstart, so we have to patch /etc/inittab regardless.
>
> Will fix vzctl accordingly soon.

Can you test this patch?

http://git.openvz.org/?p=vzctl;a=commit;h=9a2a60f7f

You can either build and install it yourself:

  git clone git://git.openvz.org/vzctl
  cd vzctl && ./autogen.sh && ./configure && ./setver -U

Alternatively, I just build packages for you to test:

http://download.openvz.org/utils/nightlies/vzctl/4.6.1-6.g9a2a60f/

More info on test builds are at http://openvz.org/Download/vzctl/nightly