On Tue, Oct 18, 2011 at 9:13 AM, Darren J Moffat <darr...@opensolaris.org> wrote: > On 10/18/11 14:04, Jim Klimov wrote: >> >> 2011-10-18 16:26, Darren J Moffat пишет:
>>> >>> ZFS does slightly biases new vdevs for new writes so that we will get >>> to a more even spread. It doesn't go and move already written blocks >>> onto the new vdevs though. So while there isn't an admin interface to >>> rebalancing ZFS does do something in this area. >>> >>> This is implemented in metaslab_alloc_dva() >>> >>> >>> http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/zfs/metaslab.c >>> >>> >>> See lines 1356-1378 >>> >> >> And the admin interface would be what exactly?.. > > As I said there isn't one because that isn't how it works today it is all > automatic and only for new writes. > > I was pointing out that ZFS does do 'something' not that it had an exactly > matching feature. I have done a "poor man's" rebalance by copying data after adding devices. I know this is not a substitute for a real online rebalance, but it gets the job done (if you can take the data offline, I do it a small chunk at a time). -- {--------1---------2---------3---------4---------5---------6---------7---------} Paul Kraus -> Senior Systems Architect, Garnet River ( http://www.garnetriver.com/ ) -> Sound Coordinator, Schenectady Light Opera Company ( http://www.sloctheater.org/ ) -> Technical Advisor, RPI Players _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
