Re: kern/43199: read(2) returns bad size in multithreaded programs

[Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>]

The following reply was made to PR kern/43199; it has been noted by GNATS.

From: Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>
To: Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>
Cc: Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>,
        gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/43199: read(2) returns bad size in multithreaded programs
Date: Wed, 28 Apr 2010 13:50:17 +0200

 Hi,
 
 it would be possible to try it on 5.x, but that will take some time, 
 because I have to reinstall the system and it is dooing some other 
 productive things for us ...
 I will come back with the results as soon as I can - I think something 
 around two or three weeks - I'm very busy at the moment ...
 
 W. Stukenbrock
 
 Mindaugas Rasiukevicius wrote:
 
 > Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost> 
 > wrote:
 > 
 >> <...>
 >> 
 >> I'm not realy confirm with the multi-thread implementation in the 
 >> NetBSD-kernel. But I looks to me that the problem is bound to some 
 >> aspects of parallel work on multiple threads.
 >> There has been no problem up to now if we run the backup of all systems 
 >> and filesystems sequential, but this is not even a sollution for a work 
 >> around, because that takes too much time ....
 >>
 > 
 > Do you have a possibility to try to reproduce this on NetBSD 5.x?
 > The 5.x and newer are fundamentally different in respect to SMP.
 > 
 >