On Tue, May 31, 2011 at 6:52 AM, Tomas Ögren <st...@acc.umu.se> wrote:
> > On a different setup, we have about 750 datasets where we would like to > use a single recursive snapshot, but when doing that all file access > will be frozen for varying amounts of time (sometimes half an hour or > way more). Splitting it up into ~30 subsets, doing recursive snapshots > over those instead has decreased the total snapshot time greatly and cut > the "frozen time" down to single digit seconds instead of minutes or > hours. > If you can upgrade to zpool version 27 or later, you should see much much less "frozen time" when doing a "zfs snapshot -r" of thousands of filesystems. --matt
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