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From: Hannes Reinecke <hare@suse.de>
To: christophe.varoqui@opensvc.com,
	device-mapper development <dm-devel@redhat.com>,
	Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: Native systemd service files for multipathd
Date: Mon, 22 Aug 2011 17:45:12 +0200	[thread overview]
Message-ID: <4E527988.9000002@suse.de> (raw)
In-Reply-To: <1314020862.30562.3.camel@lapoo.opensvc.com>

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@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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https://www.redhat.com/mailman/listinfo/dm-devel

  parent reply	other threads:[~2011-08-22 15:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-30 14:10 Native systemd service files for multipathd "Jóhann B. Guðmundsson"
2011-08-22 13:47 ` Christophe Varoqui
2011-08-22 13:57   ` "Jóhann B. Guðmundsson"
2011-08-22 15:45   ` Hannes Reinecke [this message]
2011-08-22 16:35     ` Kay Sievers
2011-08-23 15:06       ` Hannes Reinecke
2011-08-23 15:35         ` Kay Sievers
2011-08-22 16:01   ` Alasdair G Kergon

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