Re: port-xen/50659: Xen4.5 crash with vnds

[Christoph Badura <bad%bsd.de@localhost>]

The following reply was made to PR kern/50659; it has been noted by GNATS.

From: Christoph Badura <bad%bsd.de@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,
	gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
	sebastian%xenoserver.net@localhost
Subject: Re: port-xen/50659: Xen4.5 crash with vnds
Date: Thu, 24 Mar 2016 22:22:36 +0100

 On Thu, Mar 24, 2016 at 09:38:06PM +0100, Manuel Bouyer wrote:
 > > If you looks at the linux hotplug scripts, they do their own serialization
 > > as appropriate.  "grep -r _lock hotplug/Linux".
 > 
 > I tried to do something with shlock(1) but it doens't work, it's too
 > slow and xl times out. 
 > Maybe flock would work but older NetBSD don't have it ...
 
 I noticed that you said before that shlock was too slow.  I'm surprised.
 The linux claim_lock functions calls out to perl...
 
 Can we move the locking problem to pkg/51008?  That is more appropriate.
 It is independent of vnconfig operation anyway.
 
 --chris