Date: Mon, 14 Nov 2016 22:31:25 +0700 From: Victor Sudakov <vas@mpeks.tomsk.su> To: "Steve O'Hara-Smith" <steve@sohara.org> Cc: freebsd-questions@freebsd.org Subject: Re: zfs send/receive as dump/restore alternative Message-ID: <20161114153124.GA78787@admin.sibptus.transneft.ru> In-Reply-To: <20161114103657.63c03ab1d039c59db18fad90@sohara.org> References: <20161114054657.GA66229@admin.sibptus.transneft.ru> <20161114103657.63c03ab1d039c59db18fad90@sohara.org>
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Steve O'Hara-Smith wrote: > > > > I now run a couple of systems fully on zfs, and use e.g. > > "zfs send -Rv zroot@2016-10-01 > /mnt1/2016-09-25.zfs" > > for a full system backup to a remote file server. > > > > With restore(8), I could restore any separate filesystem or even a single > > file/directory from the dump, even interactively. > > As others have indicated the zfs stream is not designed as an > archive format but rather for efficient filesystem replication. Hopefully it's good for disaster recovery too. I have even written about my experience with zfs bare metal restore here: http://victor-sudakov.dreamwidth.org/357521.html > > How would you restore a) a single dataset or b) a single file from a > > replication stream package? I really need this mode of operation for > > undeleting users' files etc. > > Undoing user mistakes is what snapshots were designed for (among > other things). Install zfs-periodic to automate handling a set of hourly, > daily, weekly and monthly snapshots (in <mountpoint>/.zfs/snapshot/ with > nice clear names like hourly-2016-11-14-08). Then there's no need to go to > the backups for mistakes, just copy the old version from a suitable snapshot Good idea and a fresh outlook, thank you. > and use send/receive to maintain a near-live disaster recovery copy > (preferably offsite). -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru
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