[dm-devel] Native systemd service files for multipathd
Hannes Reinecke
hare at suse.de
Mon Aug 22 15:45:12 UTC 2011
On 08/22/2011 03:47 PM, Christophe Varoqui wrote:
> On jeu., 2011-06-30 at 14:10 +0000, "Jóhann B. Guðmundsson" wrote:
>> Is anyone taking a look at porting the multipathd legacy sysv init
>> script to native systemd unit file?
>>
>> I filed 690828 on 2011-03-25 and yet to receive somekind of response on
>> it and unless some action is taken then a) device-mapper-multipath will
>> be blocking the Fedora 16 alpha release or b) be ripped out of @base and
>> be made sure it does not get installed on the official livecd.
>>
> What is the status of this request ? Has anyone stepped-in to the job ?
> If not I'll look into it. If you have Fedora-specific systemd
> implementation guideline, please point me to the appropriate
> documentation.
>
I have talked with Kay & Lennart about this.
The main problem here is that we don't / can't know if a device is
multipathed or not; this is basically a policy decision.
Even a simple switch (multipath on/off) wouldn't suffice here, as
this particular device might be excluded via the configuration file.
Idea here is to modify the 'multipath' program to determine if a
particular device is handled by multipath or not. If so, _no other_
configuration must be done in that device.
The multipathd daemon itself already listens on events from the udev
socket; it should be pretty trivial to convert that to socket
activation.
And, of course, we need to solve the mount problem. Last I've heard
was that systemd _won't_ be handling mounting, which in effect means
we cannot mount any systems provided via multipath ...
What is the status here?
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare at suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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