Re: Please stop apps going into state D uninterrupted sleep !!

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On Tue, 2012-05-08 at 21:41 +0100, Alan Cox wrote:
> On Tue, 08 May 2012 19:42:46 +0100
> Andrew Gray <andrewg@xxxxxxxxxxxxxxx> wrote:
> 
> > Hi 
> > 
> > Either give use a way to kill a hung cp or rsync  when the VPN goes down
> > and they end up is state D uninterrupted sleep or stop apps being able
> > to go into uninterrupted sleep !!
> > 
> > It is unacceptable for a Linux system to have to be CRASH  reboot as the
> > mounted CIF mount can't be umounted as it is in use by cp or rsync in
> > stated D uninterrupted sleep !!
> 
> Can we have less exclamation marks and more explanation. What vpn are you
> using, what circumstances does it occur, what does the longer ps data
> show it blocked on, are you using NFS or similar over your VPN ?
> 
> Alan

In my case the VPN is via two Draytek Router and can drop due to ISP
resetting the ADSL occasionally plus other inter ISP routing problems. 

Most of the time VPN works find.  
Windows robocopy or xcopy over the VPN doesn't lock the system when it
fails.  

If you run another instance of cp over the VPN when one is copy is in
state D, the cp appears to run OK but you can nolonger do a ps -aux the
terminal hangs on ps 

 
-- 
Andrew Gray <andrewg@xxxxxxxxxxxxxxx>
Linnet Solutions Ltd

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