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 <thomas...@esun.com> escreveu: > > what is exactly the bug is ?! > > > ----- Original Message ----- > From: "Sérgio Surkamp" <ser...@gruposinternet.com.br> > To: ocfs2-users@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 <thomas...@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 :: ........ ser...@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 _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users