If you understand how copy on write works and how snapshots work then the concept of the extra space should make perfect since. If you want a mathmatic formula for how to figure it out i would have to say that it would be based on how DIFFERENT the data is between snapshots AND how MUCH data it is....but it's not always a 10 gb file + 10 gb file = 20 gb...that is simply NOT how ZFS or snapshots WORK. Really, If you think about it, it makes perfect sense....and it's not always as black and white as you'd like it to be.
On Tue, Aug 18, 2009 at 1:52 PM, Matthew Stevenson <no-re...@opensolaris.org > wrote: > Ha ha, I know! Like I say, I do get COW principles! > > I guess what I'm after is for someone to look at my specific example (in > txt file attached to first post) and tell me specifically how to find out > where the 13.8GB number is coming from. > > I feel like a total numpty for going on about this, I really do, but > despite all the input I still don't see an answer to this basic question. > > I promise this will be my last post querying the subject! > > Thanks > Matt > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
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