Dear Herbert, Just to update you that I have done testing RHEL Upgrade from 5.3 to 5.8 with OCFS2 and Oracle 11GR2 between two nodes in our local lab. It was successful. The only I need to install OCFS2 rpm with is compatible with kernel 194 (ocfs2-2.6.18-194.el5-1.4.7-1.el5.x86_64.rpm). Rest is all OK. This bring much confidence in me and now am going for same activity on production server shortly.
Regards, Yuvrajsinh Chauhan || Sr. DBA || Telecom Practice-PSG Elitecore Technologies Pvt. Ltd. 904, Silicon Tower || Off C.G.Road Behind Pariseema Building || Ahmedabad || INDIA [GSM]: +91 9727746022 From: Herbert van den Bergh [mailto:herbert.van.den.be...@oracle.com] Sent: 15 May 2012 20:41 To: Yuvrajsinh Chauhan Cc: ocfs2-users@oss.oracle.com Subject: Re: [Ocfs2-users] Need Expert Comments - OS Upgrade If by "Check File System" in step 5 you mean fsck, you can't run fsck on one node while the other node has the filesystem mounted. It may return inconsistencies, but those may just be due to the other node making changes. If you are just going to try to mount the filesystem, then that's fine. If you like, you can try mounting read-only first, to avoid doing any damage. When it mounts fine read-only, you can change it to read-write. Thanks, Herbert. On 5/15/12 2:07 AM, Yuvrajsinh Chauhan wrote: Herbert, Am following steps (Mention in Activity Steps Block) to upgrade OS as well as OCFS2. Do let me know if anything is missing. Thanks in Advance. Current Deployment Architecture Activity Steps Node Name RAC-NODE1 RAC-NODE2 Node Name RAC-NODE1 RAC-NODE2 Current Version RHEL5.3 RHEL5.3 Current Version RHEL5.3 RHEL5.3 Kernel Version 2.6.18-128.el5 2.6.18-128.el5 Kernel Version 2.6.18-128.el5 2.6.18-128.el5 OCFS2 Version 1.4 with Compatible Kernel 1.4 with Compatible Kernel OCFS2 Version 1.4 with Compatible Kernel 1.4 with Compatible Kernel Status ONLINE ONLINE Status DB-1 DOWN ONLINE Shared Storage /ORASYS, /ORADATA, /VOTINGDISK, /ORAREDO Shared Storage /ORASYS, /ORADATA, /VOTINGDISK, /ORAREDO FS Type Formatted with OCFS2 1 Upgrade RHEL with 5.5 or 5.8 2 Install OCFS2 RPM with Compatible Version 3 Reboot RAC Node1 4 Mount Shared Partition 5 Check File System (In cluster or not) 6 Start-up RAC DB-1 Status ONLINE Shared Storage /ORASYS, /ORADATA, /VOTINGDISK, /ORAREDO If all goes well, I will perform rolling update on Node-II From: Herbert van den Bergh [mailto:herbert.van.den.be...@oracle.com] Sent: 14 May 2012 23:34 To: Yuvrajsinh Chauhan Cc: ocfs2-users@oss.oracle.com Subject: Re: [Ocfs2-users] Need Expert Comments - OS Upgrade There's no need to do anything to the filesystems. Later OCFS2 versions are backward compatible with earlier versions. I'm not sure if there were any new features introduced in the latest OCFS2 version for EL5, but I'm pretty sure that all OCFS2 1.4.* versions have the same network protocol, so you can do a rolling update (install on node 1, reboot, install on node 2, reboot) without having to unmount the fs on all nodes first. Thanks, Herbert. On 05/14/2012 10:21 AM, Yuvrajsinh Chauhan wrote: Thanks Herbert for your reply. Few concern: . My shared partition is formatted with OCFS2 (128). Now if I update Linux with may be 5.5 or 5.8, no need to format all partition again right ? Because all my production data resides in that storage. . One more silly question: Can I upgrade OS one by one ? I mean first I upgrade one node and then second ?. During first node upgrade, I un-mount all shared partition and made available only to second node. I can do similar activity vice-versa ? Regards, Yuvrajsinh Chauhan || CRESTEL || Sr. DBA Elitecore Technologies Pvt. Ltd. 904, Silicon Tower || Off C.G.Road Behind Pariseema Building || Ahmedabad 380 006 [M]: +91 9727746022 From: Herbert van den Bergh [mailto:herbert.van.den.be...@oracle.com] Sent: 14 May 2012 21:39 To: Yuvrajsinh Chauhan Cc: ocfs2-users@oss.oracle.com Subject: Re: [Ocfs2-users] Need Expert Comments - OS Upgrade First of all, why bother update to 5.5, when you can update to 5.8? Many bugs have been fixed since 5.5. Do you really want to run into those? OCFS2 and the kernel have to be upgraded at the same time. In other words, you have to make sure you install both the kernel and the OCFS2 module that goes with it at the same time, then you reboot into the new kernel with the new OCFS2 module. The easiest thing to do is to just run yum update, and let it update to the latest package versions, and then install the OCFS2 package for the kernel that got installed. Thanks, Herbert. On 5/14/12 1:26 AM, Yuvrajsinh Chauhan wrote: Dear OCFS2 Experts, I required expert comments on my below scenario. . Oracle RAC Database 11gR2 is running on RHEL5.3 (OS Kernel Version is 128). Database is in Production. We have used SAN for cluster file system and all shared partition formatted with OCFS2 Version 128. As of now, it seems to be fine. No issues received as of now. . We have business requirements. Upper managements wants to Upgrade Linux OS. (Suggested Version is RHEL 5.5). Now I want to know How should I go for above requirements. . Should I upgrade OS First or should I first Install OCFS2 RPM compatible with 5.5 Kernel ? . Any impact on my existing storage ? I need expert comments because I have not done such upgrade with OCFS2. Regards, Yuvrajsinh Chauhan || CRESTEL || Sr. DBA Elitecore Technologies Pvt. 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