[Ocfs2-users] Question regarding HA of OCFS2

[Sunil Mushran]

ocfs2 is a shared disk clustered file system. As the disk is accessible
by all nodes, there is no need to keep the data in sync. Instead the fs
needs to ensure nodes coordinate access such that multiple nodes reading
and writing concurrently do not corrupt the fs.

You may want to read the ocfs2 1.4 user's guide to learn more about the fs.

Ed Stafford wrote:
> I'm considering using OCFS2 on some image servers (~25M image files)
> to keep them in sync across all the nodes (currently 7).  The
> questions I couldn't find answers to are:
>
> 1) How many nodes can I lose before I can no longer access data?
> 1a) Is there a way to increase the number?
>
> 2) Is the data mirrored or parity-bound (ie RAID) on each node?
> 2a) If there's an option, where would it be?
> 2b) When I grow by another node, does the data reorganize?
>
> I really appreciate your answers!  Thanks!
>
> Ed Stafford
>
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