[Lxc-users] udev

[Osvaldo Filho]

I am using the template from here: http://bodhizazen.fivebean.net/LXC/

The system seems pretty safe and does not impose any kind of change,
as changes in the way of using udev.
I did upgrade all the packages and the only problem was with the mountall.
I will try to resolve keeping the udev and return the result.
I'll contact the owner of the site where i downloaded the template.

Thank you for the great job.

2010/7/31 Daniel Lezcano <daniel.lezcano at free.fr>:
> On 07/31/2010 03:21 PM, Osvaldo Filho wrote:
>>
>> The mountall package break lxc-console
>>
>
> The problem may come from the event "start on mounted MOUNTPOINT=/dev"
> (/etc/init/mouted-dev.conf) triggering the copy of /lib/udev/library. This
> copy will overwrite the /dev/console and so breaking the "link" between the
> host and the container with the console.
>
> The same should happen with "start on mounted MOUNTPOINT=/var/run"
> (/etc/init/mouted-varrun.conf) which will break the shutdown / reboot.
>
> IMO, this is the consequence, these events should not be generated in the
> container because we should not mount /dev and /var/run. lxc monitors these
> directory.
>
> The container template "ubuntu" generates fake events for the subsystems
> because udev is not run. The udev*.conf files in /etc/init are renamed
> *.conf.orig which result to be ignored at the startup time.
>
> The /lib/init/fstab is modified by the lxc template so /dev and /var/run are
> not mounted, hence no events are generated.
>
> I am not sure you are using a "ubuntu" template from lxc, but I suggest:
>
> 1 - rename:
>
> /etc/lib/udev.conf
> /etc/lib/udevtrigger.conf
> /etc/lib/udev-finish.conf
> /etc/lib/upstart-udev-bridge.conf
>
> 2 - reduce the /lib/init/fstab to:
>
> # /lib/init/fstab: lxc system fstab
> none            /spu                      spufs           gid=spu,optional
>                0 0
> none            /tmp                      none            defaults
>                0 0
> none            /var/lock                 tmpfs
> nodev,noexec,nosuid,showthrough   0 0
> none            /lib/init/rw              tmpfs
> mode=0755,nosuid,optional         0 0
>
> 3 - add /etc/init/lxc.conf
>
> # fake some events needed for correct startup other services
>
> description     "Container Upstart"
>
> start on startup
>
> script
>        rm -rf /var/run/*.pid
>        rm -rf /var/run/network/*
>        /sbin/initctl emit stopped JOB=udevtrigger --no-wait
>        /sbin/initctl emit started JOB=udev --no-wait
> end script
>
>
> With this configuration I was able to upgrade my ubuntu container.
> I think that will fix your problem with the console.
>
> Thanks
>  -- Daniel
>>
>> 2010/7/31 Osvaldo Filho<arquivostcf at gmail.com>:
>>
>>>
>>> The others packages:
>>>
>>> The following packages will be upgraded:
>>>  apt apt-utils base-files bash bsdutils busybox-initramfs
>>> console-setup coreutils cpio dash debconf debconf-i18n dpkg e2fslibs
>>> e2fsprogs findutils
>>>  gcc-4.4-base grep hostname initramfs-tools initramfs-tools-bin
>>> initscripts iputils-ping kbd klibc-utils language-pack-en
>>> language-pack-en-base libblkid1
>>>  libc-bin libc6 libcomerr2 libdbus-1-3 libedit2 libgcc1 libglib2.0-0
>>> libgpm2 libgssapi-krb5-2 libk5crypto3 libklibc libkrb5-3
>>> libkrb5support0 libncurses5
>>>  libncursesw5 libpam-modules libpam-runtime libpam0g libpcre3
>>> libplymouth2 libpng12-0 libslang2 libss2 libssl0.9.8 libstdc++6
>>> libudev0 libuuid1 locales
>>>  lsb-base lzma module-init-tools mount mountall ncurses-base
>>> ncurses-bin openssh-client openssh-server perl-base python-minimal
>>> python2.6-minimal
>>>  sensible-utils sudo sysv-rc sysvinit-utils tzdata util-linux xkb-data
>>>
>>>
>>> 2010/7/31 Osvaldo Filho<arquivostcf at gmail.com>:
>>>
>>>>
>>>> I upgrade upstart and udev.
>>>> lxc-console is ok!
>>>>
>>>> The problem is other!
>>>>
>>>> 2010/7/31 Serge E. Hallyn<serge.hallyn at canonical.com>:
>>>>
>>>>>
>>>>> Quoting Guillaume ZITTA (lxc at zitta.fr):
>>>>>
>>>>>>
>>>>>>  Hi,
>>>>>>
>>>>>> You could use dpkg-divert utility to rename files :
>>>>>>     dpkg-divert --rename $f
>>>>>>
>>>>>> It will rename $f to $f.distrib and store this fact to the dpkg
>>>>>> database.
>>>>>> After, any update from dpkg will go to the renamed file.
>>>>>>
>>>>>
>>>>> I assume you mean for diverting the ppp device to another file?
>>>>> I think holding the package is much better in this case.  Bypassing
>>>>> the permission problem to let the upgrade succeed caused
>>>>> /etc/init/udev.conf
>>>>> to get reinstalled, which stopped him from booting.
>>>>>
>>>>> But d pkg-divert is another trick (new to me) that sounds like
>>>>> it'll come in useful.  I'm getting the feeling that container
>>>>> administration (in debian/ubuntu) is going to require a bit of
>>>>> a new art :)
>>>>>
>>>>> Thanks!
>>>>>
>>>>> -serge
>>>>>
>
>
>
>