[lxc-devel] [PATCH 2/2] Support files for systemd on Fedora.

Michael H. Warfield mhw at WittsEnd.com
Tue Nov 19 21:52:31 UTC 2013


On Tue, 2013-11-19 at 14:57 -0600, Serge Hallyn wrote: 
> Quoting Michael H. Warfield (mhw at WittsEnd.com):
> > Added a file "lxc.service" for a systemd service file.
> > 
> > Added a file "lxc-devsetup" to setup /dev/ on startup to support autodev
> > in containers.
> > 
> > Service file references lxc-devsetup as an ExecStartPre command.  The
> > lxc-devsetup script is not dependent on systemd or Fedora and can
> > be used at bootup on any system.
> > 
> > Modified lxc.spec.in to install the two new files on Fedora.  The systemd
> > specific code in the lxc.spec file may need some review and conditionalize
> > for systemd on non-systemd rpm-based systems.

> I'm fine with the idea, but will leave it to Stéphane to say whether
> this interferes with his autostart work.  If it does, then the autostart
> work should do this.  If not, then we can push this (along with an
> equivalent upstart and perhaps sysvinit job)

Actually, I was trying to anticipate his work, which is why I left the
gaping hole in the StartExec of the systemd services file and only
provided it (which we're going to have to provide no matter what) and
the Pre command which dovetails with the previous patch.  They important
piece for the autostart part really is the lxc.service file, which is
systemd specific and which I don't think Stéphane needs to worry about
other than plugging the correct command into the file, if he changes
where he wants it.  He can integrate the devtmpfs stuff into his, if we
wants.  None of this should conflict.

That's why I did not post my autostart script as a patch.  I'm waiting
on him.

Regards,
Mike

> > ---
> >  lxc.spec.in          |  8 ++++++++
> >  src/lxc/lxc-devsetup | 26 ++++++++++++++++++++++++++
> >  src/lxc/lxc.service  | 18 ++++++++++++++++++
> >  3 files changed, 52 insertions(+)
> >  create mode 100755 src/lxc/lxc-devsetup
> >  create mode 100644 src/lxc/lxc.service
> > 
> > diff --git a/lxc.spec.in b/lxc.spec.in
> > index a6c96a2..3ef5881 100644
> > --- a/lxc.spec.in
> > +++ b/lxc.spec.in
> > @@ -102,6 +102,11 @@ rm -rf %{buildroot}
> >  make install DESTDIR=%{buildroot}
> >  find %{buildroot} -type f -name '*.la' -exec rm -f {} ';'
> >  
> > +# Install some of our systemd stuff...
> > +install -d -m 755 %{buildroot}/lib/systemd/system
> > +install -c -m 644 src/lxc/lxc.service %{buildroot}/lib/systemd/system
> > +install -c -m 755 src/lxc/lxc-devsetup %{buildroot}/%{_libexecdir}/%{name}
> > +
> >  %clean
> >  rm -rf %{buildroot}
> >  
> > @@ -131,6 +136,8 @@ rm -rf %{buildroot}
> >  %{_datadir}/lxc/*
> >  %config(noreplace) %{_sysconfdir}/lxc/*
> >  
> > +/lib/systemd/system/*
> > +
> >  %files libs
> >  %defattr(-,root,root)
> >  %{_libdir}/*.so.*
> > @@ -140,6 +147,7 @@ rm -rf %{buildroot}
> >  %endif
> >  %{_localstatedir}/*
> >  %attr(4555,root,root) %{_libexecdir}/%{name}/lxc-init
> > +%attr(555,root,root) %{_libexecdir}/%{name}/lxc-devsetup
> >  
> >  %if %{with_lua}
> >  %files lua
> > diff --git a/src/lxc/lxc-devsetup b/src/lxc/lxc-devsetup
> > new file mode 100755
> > index 0000000..583a001
> > --- /dev/null
> > +++ b/src/lxc/lxc-devsetup
> > @@ -0,0 +1,26 @@
> > +#!/bin/sh -
> > +
> > +# lxc.devsetup - Setup host /dev for container /dev subdirectories.
> > +
> > +if [[ ! -d /dev/.lxc ]]
> > +then
> > +    echo "Creating /dev/.lxc"
> > +    mkdir /dev/.lxc
> > +    chmod 755 /dev/.lxc
> > +fi
> > +
> > +if grep -q "/dev devtmpfs " /proc/self/mounts
> > +then
> > +    echo "/dev is devtmpfs"
> > +else
> > +    echo "/dev is not devtmpfs - mounting tmpfs on .lxc"
> > +    mount -t tmpfs tmpfs /dev/.lxc
> > +fi
> > +
> > +if [[ ! -d /dev/.lxc/user ]]
> > +then
> > +    echo "Creating /dev/.lxc/user"
> > +    mkdir /dev/.lxc/user
> > +    chmod 1777 /dev/.lxc/user
> > +fi
> > +
> > diff --git a/src/lxc/lxc.service b/src/lxc/lxc.service
> > new file mode 100644
> > index 0000000..d3d3238
> > --- /dev/null
> > +++ b/src/lxc/lxc.service
> > @@ -0,0 +1,18 @@
> > +[Unit]
> > +Description=LXC Container Initialization and Autoboot Code
> > +After=syslog.target
> > +
> > +[Service]
> > +Type=oneshot
> > +RemainAfterExit=yes
> > +ExecStartPre=/usr/libexec/lxc/lxc-devsetup
> > +ExecStart=/usr/libexec/lxc/lxc-startup start
> > +ExecStop=/usr/libexec/lxc/lxc-startup stop
> > +# Environment=BOOTUP=serial
> > +# Environment=CONSOLETYPE=serial
> > +StandardOutput=syslog
> > +StandardError=syslog
> > +
> > +[Install]
> > +WantedBy=multi-user.target
> > +
> > -- 
> > 1.8.3.1
> > 
> > 
> > -- 
> > Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
> >    /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
> >    NIC whois: MHW9          | An optimist believes we live in the best of all
> >  PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
> > 
> 
> 
> 
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> 
> 

-- 
Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!

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