Re: [Xen-devel] [PATCH 1/2] tools: remove systemd xenstore socket definitions

[Juergen Gross <jgross@xxxxxxxx>]

On 29/06/16 14:52, Andrew Cooper wrote:
> On 29/06/16 13:44, Juergen Gross wrote:
>> @@ -2068,13 +1964,6 @@ int main(int argc, char *argv[])
>>      /* Tell the kernel we're up and running. */
>>      xenbus_notify_running();
>>  
>> -#if defined(XEN_SYSTEMD_ENABLED)
>> -    if (systemd) {
>> -            sd_notify(1, "READY=1");
>> -            fprintf(stderr, SD_NOTICE "xenstored is ready\n");
>> -    }
>> -#endif
> 
> Getting rid of the socket configuration for systemd is ok, but we should
> keep the sd_notify() calls for when the daemon is started by systemd.
> 
> Socket activiation and sd_notify() are orthogonal, and sd_notify() is
> still required if we don't want systemd to treat xenstored as a legacy
> unix daemon.

So what is the downside of xenstored being treated as a legacy daemon?
This question is especially interesting for the case of patch 2 being
considered: xenstored is no longer started by systemd, but by a wrapper
script which might decide to start the xenstore domain instead.

Another problem: today xenstored decides whether to call sd_notify()
by testing the xenstore sockets being specified via systemd. This will
no longer work. So how to do it now?


Juergen


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