Date: Tue, 25 Feb 2014 21:13:43 +0100 From: Johan Hendriks <joh.hendriks@gmail.com> To: Jean-Philippe Provost <jp.provost@soccer-beauport.qc.ca> Cc: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Determine if two ZFS snapshots on different machines are identical Message-ID: <CAOaKuAXamz8P5QvjQDcwrf=OHhJZ8TFEkPKHka7pA2kFXsF2ww@mail.gmail.com> In-Reply-To: <CA%2BzOFzQhkotJ2WFc0D3bAZf_VDUupb_2VqDG4-i9pVhXE3eTgg@mail.gmail.com> References: <CAPi0psuziQUyn2sQhhQH=2b00hWp11Dt%2BtQi6BQBoHp_Y7k2Hw@mail.gmail.com> <CAOaKuAV6OUDJWPTBadSPDwKU9MvGXuu7or0vTXmmvS8WNiuzxw@mail.gmail.com> <CA%2BzOFzQhkotJ2WFc0D3bAZf_VDUupb_2VqDG4-i9pVhXE3eTgg@mail.gmail.com>
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Op dinsdag 25 februari 2014 heeft Jean-Philippe Provost < jp.provost@soccer-beauport.qc.ca> het volgende geschreven: > Sorry, I'm new to FreeBSD but what is a "snapshot" ? > > -- > [image: Logo ASB]<javascript:_e(%7B%7D,'cvml','jp.provost@soccer-beauport.qc.ca');> > > > *Jean-Philippe Provost*Coordonnateur > Directeur de l'arbitrage > Association de soccer de Beauport > *jp.provost@soccer-beauport.qc.ca*<javascript:_e(%7B%7D,'cvml','jp.provost@soccer-beauport.qc.ca');> > > > *Bureau: 418.821.8096 [Heures d'ouverture: Lundi-Mercredi > 14h-20h]Cellulaire: 418.254.2877* > > > 2014-02-25 14:36 GMT-05:00 Johan Hendriks <joh.hendriks@gmail.com<javascript:_e(%7B%7D,'cvml','joh.hendriks@gmail.com');> > >: > >> Op dinsdag 25 februari 2014 heeft Chris Stankevitz < >> chrisstankevitz@gmail.com<javascript:_e(%7B%7D,'cvml','chrisstankevitz@gmail.com');>> >> het volgende geschreven: >> >> > Hello, >> > >> > Is there a way to test whether or not two snapshots on different >> > machines are identical? For example, git uses a single hash to >> > represent the state of the entire tree at any point in time. You can >> > compare the commit has on two independent machines to determine if the >> > contents of the repository are identical. >> > >> > Thank you! >> > >> > CHris >> > _______________________________________________ >> > freebsd-questions@freebsd.org<javascript:_e(%7B%7D,'cvml','freebsd-questions@freebsd.org');><javascript:;> mailing list >> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> > To unsubscribe, send any mail to " >> > freebsd-questions-unsubscribe@freebsd.org<javascript:_e(%7B%7D,'cvml','freebsd-questions-unsubscribe@freebsd.org');><javascript:;>" >> > >> >> I never used it, but there is zfs diff. >> # zfs diff zfsdataset@snapshot1 zfsdataset@snapshot2 >> http://docs.oracle.com/cd/E23823_01/html/819-5461/gbciq.html >> Or google for zfs diff to find more info. >> >> Regards >> Johan Hendriks >> _______________________________________________ >> freebsd-questions@freebsd.org<javascript:_e(%7B%7D,'cvml','freebsd-questions@freebsd.org');>mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to " >> freebsd-questions-unsubscribe@freebsd.org<javascript:_e(%7B%7D,'cvml','freebsd-questions-unsubscribe@freebsd.org');> >> " >> > > @chris Ok sorry i certainly did not try that. So i am sorry but i can not help you with that. @jean philippe A snapshot is like a picture from your filesystem at a certain point of time. You can create multiple pictures and see the changes, and you can also send, clone or return to a given picture. Here are some blogs you can read. They better explain it like I do :D http://breden.org.uk/2008/05/12/home-fileserver-zfs-snapshots/ http://www.googlux.com/zfs-snapshot.html http://zfsblog.com/2013/04/understanding-zfs-disk-usage-snapshots/ Also google for zfs snapshot example it will show you lots of examples.. Regards Johan
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