On Fri, Jan 16, 2009 at 02:32:06PM -0500, Eric Sproul wrote: > Nicolas Williams wrote: > > It's possible, I suppose, that when the block pointer rewrite feature is > > complete then you'll be able to kick off a rewrite of your pool that > > causes some of these options (e.g., compression) to be applied to old > > data. Matt Ahrens wrote about the block rewrite feature in his blog: > > > > http://blogs.sun.com/ahrens/entry/new_scrub_code > > > > I could a bright future for block pointer rewrite. > > Oh wow, I hadn't thought of that connection. I'd read that post when it came > out, but now I see what you mean. This could be very exciting if it turns out > to be true (applying new settings to old data).
Yes, the possibilities are great. Clearly better scrubbing (done) and vdev evacuation (from Matt's post I'd say it's in progress) are big ones. There's also: ZFS crypto re-key, application of some property changes to old blocks (e.g., compression, but recordsize would probably be tougher). Nico -- _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
