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On 03/06/2012 10:11 AM, Serge Hallyn wrote:
> Yes, I think ideally you'd have a single
>
> /var/lib/lxc/fedora-devs
>
> mounted from a single loopback or block device, with each
> container having a /var/lib/lxc/fedora-devs/<containername>
> directory, populated, for its dev, bind-mounted in through
> lxc.mount.entry.
>
> -serge
That sounds indeed better than having one loop per container as at
least Ubuntu limits the number of loop devices to 8 by default
(increasable with a kernel boot parameter).
>
> Quoting rha...@informatiq.org (rha...@informatiq.org):
>> i can do that but i didn't do it brcause it could be done
>> differently for different backingsrorage I'll do it anyway and
>> send patch later
>>
>> -- Sent from my Nokia N9On 6.3.2012 16:59 Serge Hallyn wrote:
>> Quoting Ramez Hanna (rha...@informatiq.org):
>>> On Mon, Mar 5, 2012 at 10:28 PM, <rha...@informatiq.org>
>>> wrote:
>>>> From: InformatiQ <rha...@informatiq.org>
>>>>
>>>>
>>>> Signed-off-by: InformatiQ <rha...@informatiq.org> ---
>>>> templates/lxc-fedora.in | 35
>>>> +++++++++++++++++++++++++++-------- 1 files changed, 27
>>>> insertions(+), 8 deletions(-)
>>>>
>>>> diff --git a/templates/lxc-fedora.in
>>>> b/templates/lxc-fedora.in index e7f42a6..3f50895 100644 ---
>>>> a/templates/lxc-fedora.in +++ b/templates/lxc-fedora.in @@
>>>> -69,11 +69,6 @@ EOF 127.0.0.1 localhost $name EOF
>>>>
>>>> - sed -i 's|.sbin.start_udev||'
>>>> ${rootfs_path}/etc/rc.sysinit - sed -i
>>>> 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit -
>>>> chroot ${rootfs_path} chkconfig udev-post off - chroot
>>>> ${rootfs_path} chkconfig network on -
>>>> dev_path="${rootfs_path}/dev" rm -rf $dev_path mkdir -p
>>>> $dev_path @@ -99,6 +94,23 @@ EOF
>>>>
>>>> return 0 } +configure_fedora_init() +{ + sed -i
>>>> 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit + sed
>>>> -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit
>>>> + chroot ${rootfs_path} chkconfig udev-post off +
>>>> chroot ${rootfs_path} chkconfig network on +} +
>>>> +configure_fedora_systemd() +{ + unlink
>>>> ${rootfs_path}/etc/systemd/system/default.target + touch
>>>> ${rootfs_path}/etc/fstab + chroot ${rootfs_path} ln -s
>>>> /dev/null //etc/systemd/system/udev.service + chroot
>>>> ${rootfs_path} ln -s /lib/systemd/system/multi-user.target
>>>> /etc/systemd/system/default.target + #dependency on a
>>>> device unit fails it specially that we disabled udev + sed
>>>> -i 's/After=dev-%i.device/After=/'
>>>> ${rootfs_path}/lib/systemd/system/getty\@.service +}
>>>>
>>>> download_fedora() { @@ -170,7 +182,8 @@ copy_fedora()
>>>>
>>>> update_fedora() { - chroot $cache/rootfs yum -y update +
>>>> YUM="yum --installroot $cache/rootfs -y --nogpgcheck" +
>>>> $YUM update }
>>>>
>>>> install_fedora() @@ -353,7 +366,7 @@ if [ "$(id -u)" != "0"
>>>> ]; then fi
>>>>
>>>>
>>>> -rootfs_path=$path/$name/rootfs +rootfs_path=$path/rootfs
>>>> config_path=$default_path/$name cache=$cache_base/$release
>>>>
>>>> @@ -362,7 +375,7 @@ revert() echo "Interrupted, so cleaning
>>>> up" lxc-destroy -n $name # maybe was interrupted before copy
>>>> config - rm -rf $path/$name + rm -rf $path rm -rf
>>>> $default_path/$name echo "exiting..." exit 1 @@ -388,6
>>>> +401,12 @@ if [ $? -ne 0 ]; then exit 1 fi
>>>>
>>>> +type /bin/systemd >/dev/null 2>&1 +if [ $? -ne 0 ]; then +
>>>> configure_fedora_init +else + configure_fedora_systemd
>>>> +fi
>>>>
>>>> if [ ! -z $clean ]; then clean || exit 1 -- 1.7.7.6
>>>>
>>>
>>> there is only problem about systemd not addressed by this
>>> script is that it does mount /dev which stops getty from
>>> starting on tty1 so either make it start on any tty higher than
>>> what your host is using and allow that in your lxc cgroup conf
>>> or mount the $rootfs/dev to a different block dev that way
>>> systemd won't mount /dev
>>
>> Could the template create a 1M loopback file,
>> /var/lib/lxc/<container>/dev.loopback, populated with /dev and
>> mounted by a lxc.mount.entry?
>>
>> -serge
>>
>
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Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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