[Ocfs2-users] bug resolve yet for export OCFS2 volume to NFS client ?

[Sérgio Surkamp]

NFS READDIRPLUS bug:
http://oss.oracle.com/bugzilla/show_bug.cgi?id=977

Fragmentation bug:
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1189

Regards,
Sérgio

Em Tue, 22 Mar 2011 23:34:14 +0800 (GMT+08:00)
Thomas Lau <thomaslau at esun.com> escreveu:

> 
> what is exactly the bug is ?!
> 
> 
> ----- Original Message -----
> From: "Sérgio Surkamp" <sergio at gruposinternet.com.br>
> To: ocfs2-users at oss.oracle.com
> Sent: Tuesday, March 22, 2011 11:12:59 PM
> Subject: Re: [Ocfs2-users] bug resolve yet for export OCFS2 volume to
> NFS client ?
> 
> Hi,
> 
> Our NFS setup is running stable since we have disabled READDIRPLUS on
> our FreeBSD clients. The OCFS2 cluster servers are with about 200 days
> of uptime now and last reboot was to upgrade the kernel version.
> 
> As a general recommendation, I suggest you to use the Oracle's
> Unbreakable Linux kernel on top of CentOS 5.4 (or RedHat EL 5.4) and
> OCFS2 1.6, also provided by Oracle, to avoid the known fragmentation
> bug and to be able to enable the indexed directories feature for
> improved performance.
> 
> If you are using only Linux NFS clients, you can try running with
> READDIRPLUS enabled, but maybe you experience the same bug as FreeBSD
> NFS client and disabling the READDIRPLUS call is the only known way to
> avoid the problem.
> 
> To install the Unbreakable, fallow the instructions provided by Oracle
> on its yum repository:
> 
> http://public-yum.oracle.com/
> 
> Regards,
> Sérgio
> 
> Em Tue, 22 Mar 2011 14:52:11 +0800
> Thomas Lau <thomaslau at esun.com> escreveu:
> 
> > I found this from ocfs1.4 document:
> > g) NFS
> > OCFS2 volumes can be exported as NFS volumes. This support is
> > limited to NFS version 3, which translates to Linux kernel version
> > 2.4 or later. Users must mount the NFS volumes on the clients using
> > the nordirplus mount option. This disables the READDIRPLUS RPC call
> > to workaround a bug in NFSD, detailed in the following link: 
> > http://oss.oracle.com/pipermail/ocfs2-announce/2008-June/000025.html
> > Users running NFS version 2 can export the volume after having
> > disabled subtree checking (mount option no_subtree_check). Be
> > warned, disabling the check has security implications (documented
> > in the exports(5) man page) that users must evaluate on their own.
> > 
> > is it being fixed with centos 5.3 (2.6.18-164.11.1.el5)?
> > 
> > anything I need to aware for exporting OCFS2 volume via NFS?
> > 
> 
> 
> 



-- 
  .:''''':.
.:'        `     Sérgio Surkamp | Gerente de Rede
::    ........   sergio at gruposinternet.com.br
`:.        .:'
  `:,   ,.:'     *Grupos Internet S.A.*
    `: :'        R. Lauro Linhares, 2123 Torre B - Sala 201
     : :         Trindade - Florianópolis - SC
     :.'
     ::          +55 48 3234-4109
     :
     '           http://www.gruposinternet.com.br