[DRBD-user] drbd size limit

Corey Edwards tensai at zmonkey.org
Thu Sep 15 22:50:31 CEST 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Thu, 2005-09-15 at 14:53 -0400, David Bernick wrote:
> I have read in some places that a DBRD device can only be a maximum of
> only 4TB (and aren't I glad to live in a time where I can say things
> like, "only 4 TB").
> Is that for even the latest version? Is it hardcoded? Can it be changed?
> Or is it a whole architectural issue?

This is directly a result of the hard-coded 128MB meta data. According
to the roadmap, version 0.8 will have support for variable sides meta
data and thus will support larger volumes.

        5 Support for variable sized meta data (esp bitmap) = Support
        for more than 4TB of storage.


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