[Ocfs2-users] More questions: Max partition size? Throughput?

[Joel Becker]

On Wed, Dec 23, 2009 at 02:31:32PM -0800, Patrick J. LoPresti wrote:
> 1) According to the FAQ
> (http://oss.oracle.com/projects/ocfs2/dist/documentation/ocfs2_faq.html#LIMITS),
> the size limit for a single OCFS2 partition is 16 TB.  The FAQ goes on
> to say, "This block addressing limit will be relaxed in future
> software. At that point the limit becomes addressing clusters of 1MB
> each with 32 bits which leads to a 4PB file system."  Has this "future
> software" been released?  If so, what version of OCFS2 and/or the
> Linux kernel do I need?

	Any version where ocfs2 uses jbd2 instead of jbd for
journaling.  This first appeared in Linux 2.6.27.  You also need a
recent enough ocfs2-tools to enable large journals (-J block64).

Joel

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Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127