On Fri, Sep 30, 2011 at 09:03:25PM +0530, Balbir Singh wrote:
> On Fri, Sep 30, 2011 at 8:52 PM, Vivek Goyal <vgo...@redhat.com> wrote:
> > On Fri, Sep 23, 2011 at 03:52:31PM +0200, Jan Safranek wrote:
> >> Hello,
> >>
> >> here is first bunch of patches that are needed for better cooperation with
> >> systemd. As agreed, service cgconfig stop/restart should only remove groups
> >> that cgconfig start has created and only if they are empty. This patchset
> >> focuses on that - it allows cgclear to parse a config file and remove only
> >> groups defined there and (optionally) only if they are empty.
> >>
> >
> > Thanks for doing this work Jan.
> >
> >> cgclear and cgconfigparser were updated to parse multiple files and even
> >> directories to simplify the init script and future unit file(s).
> >
> > What's the use case of being able to specify mulitple files?
> >
> >>
> >> The best way to review the set is probably start with the last patch (=man
> >> pages) so you see the functionality the patchset tries to implement. There 
> >> are
> >> also few tests you can examine.
> >
> > I see that you introduced an option to cgclear to pass a file. So an init
> > script is supposed to take snapshot of /etc/cgconfig.conf when cgroup
> > service starts and then pass that snapshot file to cgclear when cgroup
> > service is being stopped?
> >
> > If a user is using cgconfigparser and cgclear directly then he/she is
> > supposed to do this at their own?
> 
> I suspect the administrator may have files setup independent of
> systemd and can use the same file to clear the hierarchy. NOTE: admin
> could be a db admin/system admin or any other admin

Actually, I was thinking of following case.

- A user comes up with initial cgconfig.conf
- Loads it using cgconfigparser.
- Then he wants to make changes to it and reload.
- Now before making changes a user is supposed to first take snapshot of
  existing file or first do cgclear and then modify /etc/cgconfig.conf.

So basically user need to be aware of making sure to either take snapshot
of existing file or unload cgroups before making changes to cgconfig.conf.

Thanks
Vivek

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