Hi, Do know if there any known issues if Oracle Unbreakable Linux is installed on top of Centos5.5? Does anyone have any experience in installing Oracle kernel packages on Centos in production environment? Thanks, Nikola Sérgio Surkamp wrote: 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? |
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