[Ocfs2-devel] why oracle give up dlm by disk on ocfs2? because performance?

[Jensen]

Hi all,
   I found ocfs1.0 use the Distributed lock manager by disk. on ocfs2 why give up? because performance or other reason?

   Btw:
     on the ocfs1.0 why not use scsi-2/3 reservation to protect to update the dlm sector data?

Thanks,
Jensen.