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Re: [Cluster-devel] GFS2: Send useful information with uevent messages



On Thu, Nov 27, 2008 at 10:45:21AM +0000, Steven Whitehouse wrote:
> >From 04b985e291c464092516d0d1a4387b866389a85d Mon Sep 17 00:00:00 2001
> From: Steven Whitehouse <swhiteho redhat com>
> Date: Thu, 27 Nov 2008 09:42:51 +0000
> Subject: [PATCH] GFS2: Send useful information with uevent messages
> 
> In order to distinguish between two differing uevent messages
> and to avoid using the (racy) method of reading status from
> sysfs in future, this adds some status information to our
> uevent messages.
> 
> Btw, before anybody says "sysfs isn't racy", I'm aware of that,
> but the way that GFS2 was using it (send an ambiugous uevent and
> then expect the receiver to read sysfs to find out the status
> of the reported operation) was.

Not as long as gfs_controld tells gfs-kernel to recover journals one at a
time on a node, which is what it does to avoid this problem.


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