[Ocfs2-users] Need Expert Comments - OS Upgrade

Tue May 15 08:11:10 PDT 2012

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.bergh at oracle.com]
> *Sent:* 14 May 2012 23:34
> *To:* Yuvrajsinh Chauhan
> *Cc:* ocfs2-users at 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*
>
> *E**litecore**T**echnologies **P**vt. **L**td.*
>
> 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.bergh at oracle.com]
> *Sent:* 14 May 2012 21:39
> *To:* Yuvrajsinh Chauhan
> *Cc:* ocfs2-users at oss.oracle.com <mailto:ocfs2-users at 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*
>
> *E**litecore**T**echnologies **P**vt. **L**td.*
>
> 904, Silicon Tower || Off C.G.Road
>
> Behind Pariseema Building || Ahmedabad 380 006 || INDIA
>
> [GSM]: +91 9727746022
>
>
>
>
>
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