Date: Mon, 14 Nov 2016 16:30:58 -0800 From: Chuck Swiger <cswiger@mac.com> To: Victor Sudakov <vas@mpeks.tomsk.su> Cc: FreeBSD - <freebsd-questions@freebsd.org> Subject: Re: zfs send/receive as dump/restore alternative Message-ID: <022AE8EF-815D-45D1-AEC8-0165BE7683CD@mac.com> In-Reply-To: <20161115001751.GA83033@admin.sibptus.transneft.ru> References: <20161114054657.GA66229@admin.sibptus.transneft.ru> <20161114103657.63c03ab1d039c59db18fad90@sohara.org> <20161115001751.GA83033@admin.sibptus.transneft.ru>
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On Nov 14, 2016, at 4:17 PM, Victor Sudakov <vas@mpeks.tomsk.su> wrote: > Steve O'Hara-Smith wrote: >>>=20 >>> 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"=20 >>> for a full system backup to a remote file server. >>>=20 >>> With restore(8), I could restore any separate filesystem or even a = single >>> file/directory from the dump, even interactively. >>=20 >> As others have indicated the zfs stream is not designed as an >> archive format but rather for efficient filesystem replication. >=20 > BTW if anyone has experience with enterprise backup software for ZFS > (e.g. for Solaris), how does it handle the task of restoring > individual files? >=20 > Oracle says "consider an enterprise backup solution... if you need > per-file restoration": > https://docs.oracle.com/cd/E18752_01/html/819-5461/gbchx.html = <https://docs.oracle.com/cd/E18752_01/html/819-5461/gbchx.html>; The Sun E450 and E4500s I used to deal with had Legato NetWorker as = their "enterprise backup solution", which I think is now owned by EMC / Dell. It was somewhat smarter than doing a Unix filesystem level dump/restore. In particular, it understood a bunch of common filetypes and implemented delta archiving for mbox files and the like rather than having to = re-archive entire copies of changed files. (Think of Time Machine, except without a GUI or a nice graphically = viewable timeline which you could choose different versions from the backup by = date. Well, possibly Legato had an X11-based GUI tool, but the commandline = version worked much better at the time I was using it.) Regards, --=20 -Chuck
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