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Re: [Xen-devel] kxbwatch stuck in D state

To: "Christopher S. Aker" <caker@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] kxbwatch stuck in D state
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 22 Sep 2005 22:40:17 +0100
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On 22 Sep 2005, at 22:42, Christopher S. Aker wrote:

Sorry I can't be more helpful, still getting up to speed with Xen-3.0. However, I have noticed that kxbwatch (what is this?) is stuck in D state. This is from today's changeset:

root    15  0.0  0.0     0    0 ?   SW<  17:19   0:00 [kthread]
root  2669  0.0  0.0     0    0 ?   DW<  17:19   0:00  \_[kxbwatch]

It's a kernel thread, waiting for 'watch events' to fire in the xenstore. It waits in uninterruptible sleep (i.e., it is not woken by signals) hence spends most of its time in 'D' state. This doesn't mean it's hung.

 -- Keir


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