[Pkg-samba-maint] Bug#827141: winbind: regression in 4.2.10: extremely slow user/group name lookup

[Andrew Bartlett]

On Sun, 2016-06-12 at 21:48 +0200, HW42 wrote:
> Package: winbind
> Version: 2:4.2.10+dfsg-0+deb8u3
> Severity: important
> Tags: patch
> 
> Hi,
> 
> with the update to the 4.2.10 based samba a regression has been
> introduced. Resolving of user/group names is extremely slow. An 'ls
> -l'
> which normally takes significantly less than a second now takes a
> minute
> or more. Filling as 'important' since this degenerates the usability
> considerably.
> 
> I could identify the problem with a git-bisect. It's upstream bug
> #11852 [0]. And has been fixed with commit aec25b0 [1].
> 
> The upstream patch applies cleanly on top of 2:4.2.10+dfsg-0+deb8u3
> (see
> attached patch). I have tested it and it resolves the problem in my
> use
> case.
> 
> Thanks.
> 
> [0]: https://bugzilla.samba.org/show_bug.cgi?id=11852
> [1]: https://git.samba.org/?p=samba.git;a=commitdiff;h=aec25b0cc23228
> 6c3e4d85de7f00483c09f7c66e

Thanks.  I'm hoping to make a package of Samba 4.2.13 as a stable
update to fix exactly this kind of issue.  

However I've been very pressed for time, leading to an unacceptable
delay in dealing with regressions here, so any assistance most welcome
(package 4.3.12 and then the bump to 4.2.13 will be trivial).

Andrew Bartlett

-- 
Andrew Bartlett
https://samba.org/~abartlet/
Authentication Developer, Samba Team         https://samba.org
Samba Development and Support, Catalyst IT   
https://catalyst.net.nz/services/samba





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