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[Xen-devel] [PATCH] Fix domain suspend by xend stop

from [Masaki Kanno]

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Subject:	[Xen-devel] [PATCH] Fix domain suspend by xend stop
From:	Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
Date:	Wed, 12 Mar 2008 18:28:53 +0900
Delivery-date:	Thu, 13 Mar 2008 04:52:57 -0700
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Hi,

When I stopped xend by xend stop command, a domain suspend processing 
is frequently failed.  This patch solves the problem.

Step to reproduce:
 1. xm new XXX on_xend_stop="suspend" 
 2. xm start XXX
 3. xend stop

In the xend stop, if the domain suspend processing is slept by 
state_updated.wait() of waitForShutdown(), then the domain suspend 
processing is not waked up again because state_updated.notifyAll() 
of _stateSet() is not executed. 

For the reason, processing of _on_domains_changed() is waited by 
domains_lock.acquire() because the domain suspend processing is 
keeping domains_lock and sleeping.  The domain suspend processing 
got domains_lock at cleanup_domains(). 


Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>

Best regards,
 Kan

waitForShutdown.patch
Description: Binary data

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