Date: Tue, 16 Nov 2004 23:58:16 +0000 From: James Raftery <james@kerna.ie> To: freebsd-stable@freebsd.org Subject: Re: Different snapshot sizes. Message-ID: <20041116235816.GD52797@fry.kerna.ie> In-Reply-To: <16794.35765.800111.518475@canoe.dclg.ca> References: <16794.35765.800111.518475@canoe.dclg.ca>
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On Tue, Nov 16, 2004 at 06:22:29PM -0500, David Gilbert wrote: > But the snapshots are often different sizes. This strikes me as odd, > as I understood the "format" of a snapshot was to be the same as the > "format" of the partition itself --- so they should all have the same > size as the physical partition. (To my surprise also) snapshot files seem to contain more data that one might expect. There's a comment in the code that says `Write out the list of allocated blocks to the end of the snapshot' (pointed out by folks on my local BSD mailing list. Full thread at [0]). Changes in the `list of allocated blocks' might account for the differences you're seeing. [0] http://lists.redbrick.dcu.ie/pipermail/bugi/2004-August/thread.html#579 ATB, james
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