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Users can specify a chunk size for thin-pools.  This is the size allocated whenever new space is needed by a thin-LV.  The kernel module now allows unique chunk sizes for thinLVs as long as they are a multiple of the thin-pool's chunk size.

This feature should be supported by LVM.

Moving out to 7.3 since kernel work (bug#1189206) was.

Likely not going to materialize for existing version of thin-pool.
We will see with version 2.0.