[Ocfs2-users] Hi

Alexei Roudnev
Fri, 04 May 2007 20:07:59 -0000

HiIt is STRONLY recommended do not use OCFSv2 for CRS and OCR files. Just create
2 partitions, 1 - 105 MB for OCRFile , and 1 - 22 MB for CSSFIle,
make them raw using raw script (check with the docs, Oracle promise to make it
work without raw) and use them in CRS.

If using OCFSv2, you must use datavolume mounting option, which is not supported
in all versions.

Before it all, make a sanity checks:
- on node 1
  echo 1234 > a
- on node 2
  cat a
  echo 3456 > a
- on node 1
  cat a

and be sure that it all works.

When posting here, always specify:
- Linux version
- how do you install ocfsv2 (comes with the system or added by rpm or compile
yourself)
- at least, output of rpm -qa | grep ocfs

Why OCFSv2 is not good for OCR and CSS Files - in short:

- OCR and CSS Files are control files for the Oracle cluster (CRS). CRS runs
heartbeat, check cluster consistency and quorum,
makes decisions to self-fence node and so on.
- OCFSv2 is cluster too. It makes the same job, independently.

When you mix 2 clusters together, it may cause insonsistent (suboptimal)
decisions. In addition, make OCR and CSS Files on raw partition is pretty simple
and harmless. IN addition, OCFSv2 have some instabilities and timeouts, and CRS
have it's own timeouts - and this timeouts are not adjusted one to others.


  ----- Original Message -----
  From: Dheerendar Srivastav
  To: Ocfs2-users@oss.oracle.com
  Sent: Friday, May 04, 2007 11:35 PM
  Subject: [Ocfs2-users] Hi


  Hi

  We are installation of oracle RAC and install the ocfs2 but check /o2cb status
is running fine but when we installation of the crs the error message show share
space not found.
  Pls any body kindly provide the solution.
  Dheerendar Srivastav
  Associate vice President -IT
  Bajaj Capital Ltd.
  New Delhi

  p FQ?B ?5D?b
 ??
------------------------------------------------------------------------------


  _______________________________________________
  Ocfs2-users mailing list
  Ocfs2-users@oss.oracle.com
  http://oss.oracle.com/mailman/listinfo/ocfs2-users
-------------- next part --------------
An HTML attachment was scrubbed...