Hi:

I Does not know really if some recent version of libxmlrpc-c fix this bug... bug the patch seems to be into some branch....

http://sourceforge.net/p/xmlrpc-c/code/2520/

I don't pretend to confuse you with how we discover this bug, but in short it appears when executing some accounting software by Boris Parak for the Federate cloud of the EGI project....

I hope the patch i link help to clarify the situation.

Best regards.


On 12/02/15 22:53, Alejandro Feijóo wrote:
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Hash: SHA512

Hi to all.

As Esteban say,  we have a planned updated to last stable opennebula
release the Wednesday 18th, but i think we can wait if the libxmlrpc-c
is updated in the next days or maybe weeks.

I think we can wait because the new ON not have critical changes (we
have pached one-flow yet) and make 2 updates in the same month can be a
problem for our costumers... (we use oneflow in a lot of critical
services and is a problem make 2 scheduled stops)


But if the change is programated to 4.12 we going to update and patch it
(I think Ruben have a special love story paching software hehe)


Again, a lot of thanks.


El 12/02/15 a las 19:32, Esteban Freire escribió:
Hi Carlos,

Thank you very much for checking it :)

About if it should be fixed in 1.33.14, I hope Rubén answer to this
tomorrow since it is the one looking at this issue.

When do you think we could test this? Sorry for the question/hurry but
we are failing accounting due to this issue in FedCloud (EGI). In
principle, we are going to update to last ON version next Wednesday 18th.

Thanks in advance,
Esteban

On 02/12/2015 07:23 PM, Carlos Martín Sánchez wrote:
Hi,

I'm not directly involved in the packaging, but as far as I can tell,
OpenNebula 4.8 comes with libxmlrpc-c version 1.33.6.
If I understand correctly, the problem you report should be fixed in
1.33.14?

I've checked and the current super stable version is 1.33.16 [1]. We
will see if the static library can be updated without breaking
anything [2].

Regards.

[1] http://xmlrpc-c.sourceforge.net/change_super_stable.html
[2] http://dev.opennebula.org/issues/3594

--
Carlos Martín, MSc
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org <http://www.OpenNebula.org> |
cmar...@opennebula.org <mailto:cmar...@opennebula.org> | @OpenNebula
<http://twitter.com/opennebula>

On Thu, Feb 12, 2015 at 12:08 PM, RubEn DIez LAzaro <rd...@cesga.es
<mailto:rd...@cesga.es>> wrote:

     HI:

     The distro is Scientific Linux release 6.4 (Carbon) and ONE is
     installed from repo (it seems be the repo for CentOS 6)

     [root@cloud yum.repos.d]# cat opennebula.repo
     [opennebula]
     name=opennebula
     baseurl=http://downloads.opennebula.org/repo/4.8/CentOS/6/x86_64
     enabled=1
     gpgcheck=0


     The installed (from standard repos) version of libxmlrpc-c is
1.16.24:

     # yum info xmlrpc-c
     [.....]
     Installed Packages
     Name        : xmlrpc-c
     Arch        : x86_64
     Version     : 1.16.24
     Release     : 1209.1840.el6
     Size        : 263 k
     Repo        : installed
     From repo   : sl
     Summary     : A lightweight RPC library based on XML and HTTP
     URL         : http://xmlrpc-c.sourceforge.net/
     License     : BSD and MIT
     Description : XML-RPC is a quick-and-easy way to make procedure
     calls over the
                 : Internet. It converts the procedure call into XML
     document, sends
                 : it to a remote server using HTTP, and gets back the
     response as
                 : XML.
                 :
                 : This library provides a modular implementation of
     XML-RPC for C.

     but this is no matter since you claims that ONE is statically
     linked.... What version of xmlrpc-c is linked to the ONE from the
     showed repo??

     We get a source path for 1.33.14 and we build a possible (yet
     untested, done by hand using patch we have for 1.33.14) patch for
     1.16.24.... Perhaps we can send you these patches for fix the
     issue in your statically linked xmlrpc-c???

     Regards.




     On 12/02/15 11:48, Carlos Martín Sánchez wrote:
     Hi,

     We already use a statically linked libxmlrpc-c version to use a
     newer one for some distros.
     How did you install ONE, what packages are you using? Which version?

     Also, can you please share more about the libxmlrpc-c versions
     that cause problems, and when it was fixed?

     Regards
     --
     Carlos Martín, MSc
     Project Engineer
     OpenNebula - Flexible Enterprise Cloud Made Simple
     www.OpenNebula.org <http://www.OpenNebula.org> |
     cmar...@opennebula.org <mailto:cmar...@opennebula.org> |
     @OpenNebula <http://twitter.com/opennebula>

     On Wed, Feb 11, 2015 at 12:53 PM, Esteban Freire
     <esfre...@cesga.es <mailto:esfre...@cesga.es>> wrote:

         Hello,

         We are having an issue with oneacct command when we try to
         get the accounting for a group, for example:

         [oneadmin@cloud ~]$ oneacct -g ops
         ops
         HTTP-Error: 500 Internal Server Error

         [oneadmin@cloud ~]$  oneacct -g fedcloud.egi.eu
         <http://fedcloud.egi.eu>
         fedcloud.egi.eu <http://fedcloud.egi.eu>
         HTTP-Error: 500 Internal Server Error

         As far as we have been told, it seems the issue it is hidden
         deep in libxmlrpc and has almost nothing to do with
         OpenNebula or its version. The problem is this (briefly):

         Once the VM history goes over approx. 40k of VMs, libxmlrpc
         will refuse to allocate enough memory for some OpenNebula
         responses to RPC commands.

         Also, the solution proposed is to compile OpenNebula against
         a newer and patched version of libxmlrpc but to be honest, I
         would prefer avoid this solution.

         I understand this is not an OpenNebula issue but I wonder if
         as OpenNebula developers you have seen this issue before and
         it there is any other better solution. Also, if some other
         site has experiment this issue, I would like to know which
         was the solution applied.

         Any help is welcome on this since we need to solve this issue
         asap :)

         Thanks in advance,
         Esteban

         --         ++-------------------------++
         Esteban Freire García
         Centro de supercomputación de Galicia
         Avda. de Vigo s/n. Campus Vida
         15705 - Santiago de Compostela. Spain
         Tlfn.: 981 56 98 10 Extension:274
         Fax: 981 59 46 16

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- -- Alejandro Feijóo Fraga
Systems Technician
CESGA
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