On Mar 1, 2010, at 7:44 PM, study wrote: > Hello ZFS experts: > > I would like to study ZFS de-duplication feature. Can someone please let me > know which directory/files I should be looking at?
The community home page is: http://hub.opensolaris.org/bin/view/Community+Group+zfs/ from there you should start with the docs and source code tour: http://hub.opensolaris.org/bin/view/Community+Group+zfs/docs http://hub.opensolaris.org/bin/view/Community+Group+zfs/source The source tour is somewhat outdated (doesn't contain dedup changes). But it is a good starting point for figuring out how the parts fit together. Once you grok that, most of the dedup code is in the source files: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/zfs/ddt.c http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/zfs/ddt_zap.c You will find the zdb -D flag useful as you explore real systems. -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance http://nexenta-atlanta.eventbrite.com (March 16-18, 2010)
