[Ocfs2-users] Question about increasing node slots

[Sunil Mushran]

Tim Lank wrote:
> No problem.  :-)
>
> The main points of having a RAC cluster as I understand it are
> availability and scalability on low-cost systems.  Shouldn't ocfs2 have
> the ability to perform online expansion like this?  I know that Red Hat's
> GFS can add journals to accomodate new nodes while the filesystems are
> online (gfs_jadd -j Number MountPoint).

Online add node slots is in our todo list.

> What is the downside of installing a starter two-node cluster with ocfs2
> filesystems configured for say 8 node slots?  The documentation seems to
> suggest that you not do that

The only downside, if it can be called that, is space occupied by unused 
journals.
However, tools 1.2.7 will provide offline remove node slots which should 
help
with that.