Date: Fri, 21 Oct 2005 02:02:44 +0400 From: "Andrew P." <infofarmer@gmail.com> To: gayn.winters@bristolsystems.com Cc: user <user@dhp.com>, freebsd-questions@freebsd.org Subject: Re: FreeBSD UFS2 snapshots, and math ... Message-ID: <cb5206420510201502g72a9ea14x70c11bdb92edf727@mail.gmail.com> In-Reply-To: <003201c5d5b4$753f9d20$c901a8c0@workdog> References: <cb5206420510201234m140ea781o9f9034fa6b08cc58@mail.gmail.com> <003201c5d5b4$753f9d20$c901a8c0@workdog>
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On 10/21/05, Gayn Winters <gayn.winters@bristolsystems.com> wrote: > > -----Original Message----- > > From: owner-freebsd-questions@freebsd.org > > [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Andrew P. > > Sent: Thursday, October 20, 2005 12:35 PM > > To: user > > Cc: freebsd-questions@freebsd.org > > Subject: Re: FreeBSD UFS2 snapshots, and math ... > > > Imagine that each data block is marked with labels > > on change. It doesn't matter how many labels there > > are, there will be only one data block saved. > > In trying to follow this thread, I started looking around for a precise > definition of snapshot. > Man mksnap_ffs > wasn't too helpful, and googling for "snapshot" etc. wasn't fruitful. > I'm guessing that the original author of the thread (user at dhp.com) > may also need such a definition. Can someone provide a pointer to a > specification or at least an RFC-like paper? > > Thanks, > > -gayn > > > Here ya go: http://www.mckusick.com/softdep/
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