Yes, you distribute and support OCFSv2; but Oracle is another story, and
the
common recommendation
from many different Oracle engineers (not related to OCFSv2) is _don't use
OCFS for RAC files /OCRFile and CSSFile/_. Which I fully agree - it don't
have any benefits but a lot of headache. Using OCFSv2 for backups or
archive
logs is another story, for example.
Oracle itself have not a SINGLE opinion (to be curious, I hear a strong
recommendation against OCFSv2 from oracle support, which I can not agree
with), so we can't treat your recommendations as official as well - you
are
interested in OCFSv2 while users are not (users are interested in making
our
data centers run smoothly). The only _official_ thing is _certification
matrix_.
----- Original Message ----- Alexei,
While you are free to use this forum to share your opinions, do not
couch these opinions as official recommendations. When push comes to
shove, we are helping users not you. We develop, build, distribute
the software, not you. So it may serve to community better if you
let us offer the "official" recommendations and not you.
Sunil
Alexei Roudnev wrote:
It 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 <mailto:[EMAIL PROTECTED]>
*To:* [email protected] <mailto:[email protected]>
*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 FQÈB ×5DÄb ??
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