Re: A beginners guide to implementing ASM

I agree with Michael.

Also, it's not a required component, but I strongly recommend you look at ASM Filter Driver, rather than ASMLib or Linux native methods for device labeling. (Particlarly since you're on 19c.)

-Mark

On Fri, Feb 26, 2021 at 9:46 AM Michael McMullen <ganstadba_at_hotmail.com> wrote:

> You wouldn't extend the disk, you would add a new block device of the same
> size and then present it to asm. Create a disk for FRA and one for DATA.
> Use external redundancy as your SAN would take care of that piece.
> I don' t have much more information for you. We did follow this document
> when setting up back in the day. I don't know if it's relevant anymore.
>
>
> https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/solutions/vmware-oracle-databases-on-vmware-best-practices-guide.pdf
>
>
> Oracle Databases on VMware Best Practices Guide
> <https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/solutions/vmware-oracle-databases-on-vmware-best-practices-guide.pdf>
> © 2016 VMware, Inc. All rights reserved. Page 1 of 81 VMware Hybrid Cloud
> Best Practices Guide for Oracle Workloads Version 1.0 May 2016
> www.vmware.com
>
> ------------------------------
> *From:* oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> on
> behalf of Steve Wales (AddOns) <steve.wales_at_addonsinc.com>
> *Sent:* February 24, 2021 5:51 PM
> *To:* oracle-l_at_freelists.org <oracle-l_at_freelists.org>
> *Subject:* A beginners guide to implementing ASM
>
>
> Setup:
>
>
>
> Linux 7.8
>
> Oracle 19 (mostly, still got a couple I’m in the process of upgrading from
> 18)
>
>
>
> The environments I work in are primarily all Linux on Oracle VM’s.
>
>
>
> Our config is a stack or Oracle Hosts, running virtual machines through
> Oracle VM Manager (OVM).
>
> The storage appliance is a ZFS Appliance.
>
>
>
> Currently all of my databases use Direct NFS for database data file access.
>
> When building a new machine the template is set up with a couple of
> virtual disks assigned to the VM that were defined to Linux by using ssm
> with something along the way of:
>
>
>
> ssm create -s 59G -n lv_u01 –fstype xfs -p vg_u01 /dev/xvdb /u01
>
>
>
> Then we create shares using the ZFS appliance console, and mount them to
> the server and manage those via dNFS.
>
>
>
> I want to start looking into ASM. I’d like to run some performance tests
> on ASM vs dNFS.
>
>
>
> I’ve started reading the ASM documentation and notes that I’ve been able
> to find on the Oracle Support site – and my first step appears to be to try
> to create disk presented to the VM and then configure it on Linux as a raw
> disk partition. Doc Id 452924.1 offers up a few examples of disk type to
> use and Raw disk partition is #1 on that list.
>
>
>
> I guess related to that for down the road type stuff, how easy is it to
> extend a raw partition if you need to grow it down the road ?
>
>
>
> Found an article on fedoraproject.org using parted, but don’t want to
> muck around too much without knowing what top expect, so I’m hoping to get
> some pointers from here.
>
>
>
> I am not a Linux Sysadmin (I know enough to be dangerous) and I am not a
> storage engineer. Our previous Linux guy has just resigned and we’re still
> interviewing replacements.
>
>
>
> So, anyone able to offer me something from their experience that might
> shed some light here. I don’t have a lot of spare time at the moment for a
> lot of the learn by playing around stuff so was hoping that someone might
> have some real life tales to share or pointers to links for my reading
> (since my Google-fu has found a bunch of stuff for mucking around in
> VirtualBox but that’s not what I’m using here.
>
>
>
> Thanks
>
> Steve
>
>
>
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