[Nbd] nbd timeout on debian jessie (Was: Re: oops with timeout option on debian wheezy kernel)

[Hermann Lauer <Hermann.Lauer@...1489...>]

Dear nbd kernel maintainers,

On Tue, Feb 11, 2014 at 11:20:08PM +0100, Michal Belczyk wrote:
> > according to a mail from 21 July 2011 (http://comments.gmane.org/gmane.linux.drivers.nbd.general/985)
> > this is due to the ioctl(nbd, NBD_SET_TIMEOUT, timeout) not working.
> > 
> > Here on debian wheezy (Linux www1 3.2.0-4-amd64 #1 SMP Debian 3.2.46-1+deb7u1 x86_64 GNU/Linux) a disconnection of the server host yields hanging
> > of any "cat /proc/mdstat" on the raid1 on top of the nbd device
> > and to the appended oops (only two shown) of the kernel. Only
> > bringing back the nbd server allows further commands on the md device.
> > 
> > Any news/ideas on that subject ?
> 
> No code has been pushed upstream to fix it since then...
> 
> You may want to take a look here:
> 
>   https://www.mail-archive.com/nbd-general@lists.sourceforge.net/msg01513.html
>   https://www.mail-archive.com/nbd-general@lists.sourceforge.net/msg01549.html
> 
> I will post the patch against the most recent tip later this week.

reinvestigated this issue on debian jessie (kernel 3.16-3-amd64 #1 SMP Debian 3.16.5-1)
and still getting hangs - has the mentioned patch made his way upstream ?

Looking at the 3.16.1 vanilla source at a first glance looks like it's not there - and
I seem to have no version which applys cleanly.

Thanks and a nice weekend
  greetings
    Hermann

-- 
Netzwerkadministration/Zentrale Dienste, Interdiziplinaeres 
Zentrum fuer wissenschaftliches Rechnen der Universitaet Heidelberg
IWR; INF 368; 69120 Heidelberg; Tel: (06221)54-8236 Fax: -5224
Email: Hermann.Lauer@...1489...