ServiceGuard + RAC on NFS

[Schelstraete Bart_1]

Hi,

We need to *test* ServiceGuard with the RAC extension, but we don't have a shared storage.
We will use NFS to simulate the shared storage. Now is the question, will that work with the ServiceGuard RAC extension?

[Warren_9]

hi,

i don't think the RAC will work on the NFS...

GOOD LUCK!!

[Luk Vandenbussche]

Bart,

If you use raw devices for the database this will not work. You cannot share raw devices with NFS (you need a filesystem)

Optionaly you can test it an a single node cluster.

[Schelstraete Bart_1]

Hi Luk,

It won't use RAW devices, but normal 'lv's

[Ninad_1]

Hi,

I dont think it will work. The reason being that - when you are using an application which will be running on multiple nodes at the same time - like the Oracle RAC , you not only need shared storage, but the shared volumes are managed by a software/application which manages the read/write requests from all the nodes and decides how to serve the requests. Thus you need a Cluster volume manager apart from the Service guard and Oracle RAC software.
The cluster volume manager manages the requests from multiple nodes to be written to the same storage.

Hope this clarifies,
Ninad

[sysadm_1]

You have to configure shared VGs for service Guard to work.How you gonna configure shared Vgs using NFS??

I dont think this will work.