The file system on-disk image has not changed. So the 1.6 file system software can mount the volume created with 1.2 mkfs. What you cannot do is concurrently mount the same volume with nodes running 1.2 and 1.6 versions of the file system software.
It is not mixed mode. The 1.6 fs software will read the on-disk features on the 1.2 volume and limit the functioning on that volume to just that. Perfectly normal. Yes, you can add the tablespace on the 1.2 volume. For the 1.2 volume to be able to use 1.6 features, the said features will have to be enabled. Once you do enable those features, the volume will not be mountable on the older RHEL4 boxes unless those features are disabled. There is a whole section in the users' guide that explains this in more detail. On 03/02/2012 08:09 AM, Maki, Nancy wrote: > We are in the process of migrating to new database servers. Our current > RAC clusters are running OCFS2 1.2.9 on RHEL 4. Our new servers are > running OCFS2 1.6 OEL5. If possible, we would like to minimize the > amount of data that needs to move as we migrate to the new servers. We > have the following questions: > > 1.Can we mount an existing OCFS2 1.2 volume on a servers running OCFS2 1.6? > > 2.Are there any negative implications of being in a mixed mode? > > 3.If we need to add a OCFS2 1.6 volume to increase a tablespace size, > can we have one datafile be OCFS2 1.2 and another > > be OCFS2 1.6 for the same tablespace? > > 4.Can we use OCFS2 1.6 features against an OCFS2 1.2 volume mounted on > OCFS2 1.6? > > Thank you, > > Nancy > > circle <http://www.suny.edu/>** > > > > *Nancy Maki* > /Manager of Database Services/ > > Office of Information & Technology > The State University of New York > State University Plaza - Albany, New York 12246 > Tel: 518.320.1213 Fax: 518.320.1550 > > eMail: nancy.m...@suny.edu > */Be a part of Generation SUNY: /**/Facebook/* > <http://www.facebook.com/generationsuny>*/- /**/Twitter/* > <http://www.twitter.com/generationsuny>*/- /**/YouTube/* > <http://www.youtube.com/generationsuny> > > > > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users@oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users