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RE: CVS Core on AIX

From: Derek Nerenberg
Subject: RE: CVS Core on AIX
Date: Thu, 17 Nov 2005 07:46:48 -0700

We did more investigation last night.  This isn’t a problem from other UNIX boxes and it’s not a problem from Eclipse.  The only time a core file is created is a result of using WinCVS / CVSNT clients to connect to the repository.  Connections and communications are done using pserver.  I even went back to WinCVS 1.3 and used the client from that version (which was available at the same time we built 1.11.5 of the repository).  That didn’t work either. 


Here’s a trace:


CVSROOT: address@hidden:/source/CVS (password authentication)

cvs login

Logging in to :pserver:address@hidden:2401:/source/CVS


***** CVS exited normally with code 0 *****


cvs watch add (in directory C:\PROJECTS\java\eclipse\myproject\)

? web/images/_new_ logo.gif


***** CVS exited normally with code 0 *****


cvs update -C (in directory C:\PROJECTS\java\eclipse\myproject\)

? web/images/_new_ht_logo.gif

cvs server: Updating .

cvs server: Updating bin

cvs server: Updating conf

cvs server: Updating conf/dev

cvs server: Updating conf/prod

cvs server: Updating lib

cvs server: Updating sql

cvs server: Updating src

cvs server: Updating web

cvs server: Updating web/css

cvs server: Updating web/images

U web/images/logo.gif

U web/images/up_arrow.gif


***** CVS exited normally with code 0 *****



I read another post from someone that was having similar problems on an AIX box.  Their cores were resulting from segmentation faults.  I had someone open up the core with a debugger and it basically looks like CVS can’t clean up after itself as it should.  The debugger had some messages about segmentation faults as well.  The patch that I saw for this problem in the archive basically just prevents the core file from being written. 


We actually had this problem when we first started using WinCVS over a year ago, but we quickly abandoned the use in favor of using Eclipse.  Now that we’re moving to JDeveloper, we have to use the client that’s installed on our local machines.  As a result we now have a high dependency on CVSNT / WinCVS.  We’re considering trying to move the repository to a Suse box and get off the AIX box altogether, but that’s a project in and of itself with no guarantees.





From: Arthur Barrett [mailto:address@hidden
Sent: Wednesday, November 16, 2005 8:15 PM
To: Derek Nerenberg; address@hidden
Subject: RE: CVS Core on AIX




You seem to have forgotten to include a trace. 


Without the trace we can't see important information such as the CVSROOT that you are using, protocol etc.  Does the same command (using exactly the same CVSROOT, including protocol and network address) work ok on the server?  If you are using SSH ensure that the CVS_SERVER variable is set correctly on the client.


2.0.51d is getting pretty old now - but should never cause a crash on the server.






-----Original Message-----
From: Derek Nerenberg [mailto:address@hidden
Sent: 17 November 2005 00:15
To: Arthur Barrett; address@hidden
Subject: RE: CVS Core on AIX

I just downloaded the client which is the 2.0.51d version.  When I try to login using command line options without JDeveloper even started, it cores out on the CVS server.  I suspect there are problems with the versions.  I’d like to download the correct client for a repository that’s 1.11.5 version, but can’t seem to figure out how / where to get the correct client.  Any assistance would be greatly appreciated





From: Arthur Barrett [mailto:address@hidden
Sent: Wednesday, November 16, 2005 3:35 PM
To: Derek Nerenberg; address@hidden
Subject: RE: CVS Core on AIX




If you think the problem is related to/caused by the CVSNT client then you should address the question to the CVSNT newsgroup:

The first step in debugging what is going on is to get a trace:


Try and rule out the JDeveloper GUI by using the command line for your tests instead, and give a specific example of something that causes a crash (ie: "everything" is not specific - does "cvs version" cause the crash? What about "cvs login"? etc


For info on how to debug AIX core files you should probably ask either the GCC or AIX newsgroups...






-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Derek Nerenberg
Sent: 16 November 2005 16:52
To: address@hidden
Subject: CVS Core on AIX



I’m having a problem using the newest version of CVSNT client (via JDeveloper).  Everything I do through the JDeveloper GUI will generate core files in /tmp.  CVS 1.11.5 is running on AIX 5.


I do not have admin privileges on the CVS repository, but am tasked with figuring this out.  Can someone give me some instructions on using the debugger so I can interpret the cores for you?


Kind Regards,




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