Date: Fri, 25 Dec 2009 15:23:41 +0100 From: patpro <patpro@patpro.net> To: Bob Friesenhahn <bfriesen@simple.dallas.tx.us> Cc: freebsd-fs@freebsd.org Subject: Re: snapshot implementation Message-ID: <2d31d4474f4fdc31428a236df5a789db@localhost> In-Reply-To: <alpine.GSO.2.01.0912231031450.1586@freddy.simplesystems.org> References: <32CA2B73-3412-49DD-9401-4773CC73BED0@patpro.net> <alpine.GSO.2.01.0912231031450.1586@freddy.simplesystems.org>
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On Wed, 23 Dec 2009 10:41:34 -0600 (CST), Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote: > > I don't know anything about snapshots in UFS, but snapshots in ZFS are > certainly remarkably different. ZFS uses copy-on-write (COW) whenever > a data block is updated UFS snapshot also uses copy on write mechanism. So it's not so different from ZFS snapshot. patpro
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