Re: [Nbd] nbd timeout on debian jessie (Was: Re: oops with timeout option on debian wheezy kernel)
- To: Paul.Clements@...124...
- Cc: nbd-general@lists.sourceforge.net
- Subject: Re: [Nbd] nbd timeout on debian jessie (Was: Re: oops with timeout option on debian wheezy kernel)
- From: Hermann Lauer <Hermann.Lauer@...1489...>
- Date: Mon, 15 Dec 2014 11:13:06 +0100
- Message-id: <20141215101306.GA31118@...1490...>
- In-reply-to: <20141128125554.GH1201@...1490...>
- References: <20140210120607.GI19189@...1490...> <20140211222008.GE95782@...1273...> <20141114161117.GC15362@...1490...> <20141114165219.GD28731@...1273...> <20141118093150.GG20088@...1490...> <20141118100549.GA56582@...1273...> <20141128125554.GH1201@...1490...>
Dear NBD Maintainer,
> On Tue, Nov 18, 2014 at 11:05:49AM +0100, Michal Belczyk wrote:
> > > > This is the version rebased against the current tip, completely
> > > > untested.
> ...
> > Let me attach the corrected version of the patch.
>
> Tested now on a virtual and real amd64 machine - "nbd-client -timeout 5"
> works when cutting the network. So you can add:
>
> Tested-By: Hermann.Lauer@...1489...
>
> > > Why did this bugfix not made his way upstream (especially as this timeout issue is a blocker for mirroring) ?
> >
> > No idea, maybe the way timeouts are handled currently is good enough for
> > most use cases...
>
> Without that timeouts are in the range of 15 Minutes (including some cpu stall kernel messages) - which is
> unacceptable. "ls" on the fs on the raid1 or "cat /proc/mdstats" stay in state "D" during that time.
are there any news on the nbd timeout issues in the kernels ?
Just checked nbd.c - 3.18 seems not to contain the patch.
Maybe I overlooked something or there are issues with it.
Thanks for any help,
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...
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