From: Olaf Hering <olaf@aepfle.de>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: Re: [PATCH] reset PV devices in crash kernel
Date: Mon, 7 Feb 2011 18:42:05 +0100 [thread overview]
Message-ID: <20110207174205.GA9190@aepfle.de> (raw)
In-Reply-To: <20110207171642.GB16937@dumpdata.com>
On Mon, Feb 07, Konrad Rzeszutek Wilk wrote:
> On Mon, Feb 07, 2011 at 05:28:09PM +0100, Olaf Hering wrote:
> >
> > After triggering a crash dump in a HVM guest, the PV backend drivers
> > will remain in connected state. When the kdump kernel starts the PV
> > drivers will skip such devices. As a result, no root device is found
> > and the vmcore cant be saved.
> >
> > With this change all frontend devices with state XenbusStateConnected
> > will be reset by changing the state file to Closing/Closed/Initializing.
> > This will trigger a disconnect in the backend drivers. Now the frontend
> > drivers will find the backend drivers in state Initwait and can connect.
>
> Do you have a similar patch for the pv-ops?
No yet, due to lack of pv-ops kernel on my side.
I will try to get one up and running soon.
Olaf
next prev parent reply other threads:[~2011-02-07 17:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-04 15:28 [PATCH] kdump: introduce "reset_devices" command line option Olaf Hering
2011-02-04 15:30 ` [PATCH] reset PV devices in crash kernel Olaf Hering
2011-02-07 16:28 ` Olaf Hering
2011-02-07 17:16 ` Konrad Rzeszutek Wilk
2011-02-07 17:42 ` Olaf Hering [this message]
2011-04-01 10:16 ` Olaf Hering
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