From: Wei Liu <wei.liu2@citrix.com>
To: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH v3] libxl: trigger attach events for devices attached before xl devd startup
Date: Tue, 19 Jul 2016 14:20:26 +0100 [thread overview]
Message-ID: <20160719132025.GT13180@citrix.com> (raw)
In-Reply-To: <20160718153129.GB11908@citrix.com>
On Mon, Jul 18, 2016 at 04:31:30PM +0100, Wei Liu wrote:
> On Sat, Jul 16, 2016 at 01:47:56AM +0200, Marek Marczykowski-Górecki wrote:
> > When this daemon is started after creating backend device, that device
> > will not be configured.
> >
> > Racy situation:
> > 1. driver domain is started
> > 2. frontend domain is started (just after kicking driver domain off)
> > 3. device in frontend domain is connected to the backend (as specified
> > in frontend domain configuration)
> > 4. xl devd is started in driver domain
> >
> > End result is that backend device in driver domain is not configured
> > (like network interface is not enabled), so the device doesn't work.
> >
> > Fix this by artifically triggering events for devices already present in
> > xenstore before xl devd is started. Do this only after xenstore watch is
> > already registered, and only for devices not already initialized (in
> > XenbusStateInitWait state).
> >
> > Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> > Cc: Wei Liu <wei.liu2@citrix.com>
> > Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
>
> Acked-by: Wei Liu <wei.liu2@citrix.com>
Queued. Thanks.
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prev parent reply other threads:[~2016-07-19 13:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-10 17:35 [PATCH] libxl: trigger attach events for devices attached before xl devd startup Marek Marczykowski-Górecki
2016-07-11 8:31 ` Roger Pau Monné
2016-07-11 8:56 ` Marek Marczykowski-Górecki
2016-07-11 9:43 ` Roger Pau Monné
2016-07-11 9:49 ` Marek Marczykowski-Górecki
2016-07-11 10:00 ` Roger Pau Monné
2016-07-11 10:44 ` [PATCH v2] " Marek Marczykowski-Górecki
2016-07-11 10:53 ` Roger Pau Monné
2016-07-14 9:36 ` Wei Liu
2016-07-15 23:47 ` [PATCH v3] " Marek Marczykowski-Górecki
2016-07-18 15:31 ` Wei Liu
2016-07-19 13:20 ` Wei Liu [this message]
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