[Ocfs2-users] OCFS2 and berkeley database files

[Alexei_Roudnev]

There was a clear answer, WHY it did not worked on OCFSv2:

- BerkleyDB and LDAP uses mmap to the files;
- OCFSv2 don't implement it (because it is not possible to do such mapping
in the cluster FS)
- So they dont work on OCFSv2

Am I correct?

----- Original Message ----- 
From: <hartmut.woehrle at mail.pcom.de>
To: "Michael Wood" <michael.wood at uct.ac.za>
Cc: <ocfs2-users at oss.oracle.com>
Sent: Wednesday, December 06, 2006 2:33 AM
Subject: Re: [Ocfs2-users] OCFS2 and berkeley database files


Am Mi, 6.12.2006, 09:35, schrieb Michael Wood:

>
> Berkeley DB does have problems with certain filesystems (e.g.
> NFS) so maybe this is a similar issue.  (Just a wild guess.)
>
Yes I found the Orcale FAQ. So it is s structural problem with a "simple"
DB and then trying to open it more than once


>
> OpenLDAP supports various different backends.  Maybe one of the
> others will work better?
>
Perhaps, but my guess is, that the funktionality of an cluster filesystem
always uses an access to every file, even if it is not connected to a
service. So I think it will not work if theses files are not able to
handle more than one access at one time.

>
>
> Cyrus also supports various different database types for its
> databases.  Maybe try one of the others.  I have never used either
OpenLDAP
> or Cyrus on ocfs2, so I can't guarantee anything :)

Same as above

>
>
>> Server is a DELL Poweredge with EMC CLARiiON SAN
>> System SuSE SLES9 SP3+
>> ->  2.6.5-7.244-smp Kernel with (...> modinfo ocfs2):
>> license:        GPL
>> author:         Oracle
>> version:        1.1.7-SLES 5AF01E6455FC04917FE52FB
>> description:    OCFS2 1.1.7-SLES Tue Nov  1 14:45:27 PST 2005 (build
>> sles) depends:        ocfs2_nodemanager,ocfs2_dlm,jbd
>> supported:      yes
>> vermagic:       2.6.5-7.244-smp SMP gcc-3.3
>>
> [snip]
>
>
> 2.6.5-7.244 was released with SLES9 SP3.  You might want to
> patch your box to 2.6.5-7.282 (which I think is the latest.)
>
> The 7.282 version of the SLES9 SP3 kernel comes with ocfs2
> version 1.2.1-SLES.

Yes, but this EMC multipath software installs some kernelmodules
(binaries, no sources) and they only match with the kernels in the list.
So I have to wait for the next release :(((

>
> On the ocfs2 homepage it says:
>
>
> SuSE Linux Exterprise Server 9: OCFS2 1.2.1 is bundled
> with the SLES9 SP3 (2.6.5-7.257 and later) release. SLES9 users must
> upgrade to the latest SP3 kernel (2.6.5-7.257 or later) and install
> ocfs2-tools and ocfs2console packages. For more on OCFS2 bundling with
> SLES9, refer to the Novell SLES9 section in the FAQ
>

See above

>
> --
> Michael Wood <michael.wood at uct.ac.za>
>
>



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