Re: Any comments on database/file system storage options?

From: Karl Arao <karlarao_at_gmail.com>
Date: Thu, 18 Jun 2009 11:21:04 +0800
Message-ID: <12ee65600906172021o39e1ea74gd3b6f52fc5500c80_at_mail.gmail.com>

*"To achieve your goals of resizing or migrating storage on the fly, it is possible to do the same using ASM over raw disks, instead of OCFS."

I believe that really means OCFS2.... That's what we are currently using. We ran into a problem trying to resize a LUN, though. I gather from some coworkers that there may be an OS patch we need to apply. They're checking into that. We really just need something relatively simple that can be set up without too much additional cost. I know, we can want that :-)"*

---

What OCFS2 version are you using?
in version 1.2.2 it allows you to resize the filesystem, but you have to be offline. (I've not yet tested this)
in version 1.4.x it allows online resize of the filesystem

However, it doesn't have the flexibility of replacing LUNs on the fly like ASM has which you could just remove and add disk and automatically re-balancing of ASM extents across disks.

To know more, read on the links below:

http://oss.oracle.com/projects/ocfs2/dist/documentation/ocfs2_faq.html#RESIZE
http://oss.oracle.com/projects/ocfs2-tools/dist/documentation/tunefs.ocfs2.html
http://www.oracle.com/technologies/linux/ocfs2.html
http://oss.oracle.com/projects/ocfs2/

• Karl Arao http://karlarao.wordpress.com

On Thu, Jun 18, 2009 at 2:19 AM, kathy duret <katpopins21_at_yahoo.com> wrote:

> OCFS2 should work, I have only tried it on with oracle databases and apps.
>
> ASM is only for Oracle.
>
> K
>
> --- On *Wed, 6/17/09, Andrew Kerber <andrew.kerber_at_gmail.com>* wrote:
>
>
> From: Andrew Kerber <andrew.kerber_at_gmail.com>
> Subject: Re: Any comments on database/file system storage options?
> To: sxmte_at_email.alaska.edu
> Cc: Oracle-L_at_freelists.org
> Date: Wednesday, June 17, 2009, 1:02 PM
>
> Does Oracle say that OCFS2 wont work? I think it will...
>
> On Wed, Jun 17, 2009 at 12:56 PM, Maureen English <sxmte_at_email.alaska.edu<http://us.mc382.mail.yahoo.com/mc/compose?to=sxmte_at_email.alaska.edu>
> > wrote:
>
>> Hi,
>>
>> We have 3 RHEL5 machines and are trying to decide how to correctly
>> configure
>> them as a clustered system that will run a variety of applications, as
>> well
>> as many Oracle databases.
>>
>> Oracle tells us that the only options are ASM or CLVM with GFS. Isn't ASM
>> only for Oracle databases, though?
>>
>> We are currently at release 10.2.0.4.0 for our Oracle databases.
>>
>> Any comments?
>>
>> Note that we currently have these 3 machines set up with LVM2 and Oracle
>> Clusterware, but are not running any RAC databases, just single instance
>> databases. The problem we've run into is in trying to resize the LUNs.
>>
>> - Maureen (not a sysadmin....)
>>
>>
>> --
>> http://www.freelists.org/webpage/oracle-l
>>
>>
>>
>
>
> --
> Andrew W. Kerber
>
> 'If at first you dont succeed, dont take up skydiving.'
>
>
>

--
http://www.freelists.org/webpage/oracle-l

Received on Wed Jun 17 2009 - 22:21:04 CDT