Great Circle Associates Majordomo-Users
(May 1997)
 

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Subject: Re: Possible race condition in Majordomo 1.94.1 causing bounces
From: Jeffrey Haas <jhaas @ uiuc . edu>
Date: Thu, 1 May 1997 10:05:25 -0500 (CDT)
To: Petter Nilsen <pettern @ thule . no>
Cc: Majordomo Users list <Majordomo-users @ GreatCircle . COM>
In-reply-to: <1301.7060T926T1494@thule.no>
Reply-to: Jeffrey Haas <jhaas @ uiuc . edu>

Are you using the medit script that comes with Majordomo?  It does the file
locking when you are editing files.  It should be in the bin directory within
your Majordomo installation.

--jeff

> See the attached message from the bounce I got yesterday. I'm pretty sure
> what the problem is, and it's caused by majordomo.  I haven't checked, and
> most likely won't since I don't want to experiment with majordomo which is
> running quite a few lists. Anyway, he's my theory about the problem:
> 
> - majordomo receives a message to a mailing list
> - majordomo receives a admin unsubscribe message from me for the same list
> - majordomo updates the subscribtion list for this list, but doesn't create
> a   lockfile to keep others away until it's done.
> - majordomo tries to pass the subscribtion list to sendmail, which fails
> since   it's being modified.  Also, it doesn't check if anyone is actually
> modifying   the list of subscribers (using that non-existing lock file). The
> alias loop   breaks, the mail bounces.
> 
> Is this the correct scenario? From what I can see from the sources, this
> could very well be the case.   Any chance of a fix coming fairly soon?
> 
> --
> \\\\\\   Petter Nilsen - IRC: Mitchman - mailto:pettern@thule.no   |\
>  >>>>>>============================================================| >
> //////     THOR Team Coordinator - http://www.thule.no/~pettern/   |/
> 
> War is good business -- invest your sons.



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