[systemd-devel] Something is removing links from my *.wants/ directory

[Adam Papai]

Just one more additional information:

So if I have already started the container and I stopped it, on the next
start up, it's not deleting the links at all, so this is very strange to
me. The links are the same, just links, no special attributes, same rights
as before, but on the first but up they get deleted.

On Thu, Dec 11, 2014 at 10:17 AM, Adam Papai <wooh at wooh.hu> wrote:

> Hey Guys,
>
> We're running Arch Linux kernel-3.15 with lxc containers, systemd 215
> without any issue.
>
> But with 3.17 + systemd 217 we have very strange issues:
>
> We have this target file:
>
> [root at i-8452c468 system]#  cat
> /home/wooh/container/system/container.target
> [Unit]
> Description=container.target
> Requires=basic.target
>
> [Install]
> Alias=container.target
>
> Pwd:
> [root at i-8452c468 system]# pwd
> /home/wooh/container/system
>
> We have these links in:
> [root at i-8452c468 system]# ls -lart container.target.wants/
> total 8
> lrwxrwxrwx 1 root root   38 Apr 27  2014 dns-resset.service ->
> /etc/systemd/system/dns-resset.service
> drwxr-xr-x 8 root root 4096 Dec 11 08:51 ..
> lrwxrwxrwx 1 root root   41 Dec 11 09:01 private-mount.service ->
> /etc/systemd/system/private-mount.service
> lrwxrwxrwx 1 root root   48 Dec 11 09:01 jenkins-master-runit.service ->
> /etc/systemd/system/jenkins-master-runit.service
> lrwxrwxrwx 1 root root   49 Dec 11 09:01 container-mail-forward.socket ->
> /etc/systemd/system/container-mail-forward.socket
> lrwxrwxrwx 1 root root   35 Dec 11 09:01 sshd.socket ->
> /usr/lib/systemd/system/sshd.socket
> lrwxrwxrwx 1 root root   40 Dec 11 09:01 iptables.service ->
> /usr/lib/systemd/system/iptables.service
> lrwxrwxrwx 1 root root   39 Dec 11 09:01 check-private.timer ->
> /etc/systemd/system/check-private.timer
> lrwxrwxrwx 1 root root   41 Dec 11 09:01 check-private.service ->
> /etc/systemd/system/check-private.service
>
> These links are created by chef and/or coming from an EC2 volume-snapshot,
> so some of them are already there for years.
>
> But when I start the linux-contaner using the following command below,
> almost all links in container.target.wants/ gets deleted, except 1 or 2.
>
> /usr/bin/lxc-start -d -n wooh -l DEBUG -o /tmp/lxc-container-wooh.log -L
> /tmp/lxc-console-wooh.log -f /var/lib/lxc/master-config-wooh /sbin/init
> systemd.unit=container.target
>
> This link remains only, all others disappear:
>
> lrwxrwxrwx 1 root root   38 Apr 27  2014 dns-resset.service ->
> /etc/systemd/system/dns-resset.service
>
>
> Any idea why my links get deleted from the .target directory? This happens
> only on the very first run. After the first lxc-container boot up,
> systemctl status shows me "degraded" state inside of the container.
>
> When I re-create the links or chef re-creates them, and I stop/start the
> container or even reload the config inside of the container and restart
> container.target service, everything is working fine.
>
> Why and what is removing my files from the target directories? Those are
> required to run the lxc-container properly otherwise it'll boot up in a
> dergaded state, without ssh and iptables forwarding and so on.
>
> What did I miss? Is it something change between 215 - 217? I debugged it
> with strace and lxc-start does nothing with those files.
>
> Any help is appreciated!
>
> Thanks in advance,
>
> --
> Adam PAPAI
>
>


-- 
Adam PAPAI
E-mail: wooh at wooh.hu
Phone: +36 30 33-55-375
Web: http://www.wooh.hu
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