Date: Sat, 4 Aug 2018 23:07:28 +0100 From: Gary Palmer <gpalmer@freebsd.org> To: Dmitry Morozovsky <marck@rinet.ru> Cc: freebsd-fs@FreeBSD.org Subject: Re: ZFS backup Q: send/recv and mountpoint property Message-ID: <20180804220727.GA83288@in-addr.com> In-Reply-To: <alpine.BSF.2.00.1807222110450.28320@woozle.rinet.ru> References: <alpine.BSF.2.00.1807222110450.28320@woozle.rinet.ru>
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On Sun, Jul 22, 2018 at 09:14:05PM +0300, Dmitry Morozovsky wrote:
> Colleagues,
>
> still stuck in compiling stable procedure.
>
> Prerequisites:
>
> - some servers, all on ZFS, with layout such as
> machine -> unique pool name, usually 2-letters, say, hm and im
>
> - zfs layouts like
>
> hm/R/${fs}, like
> hm/R
> hm/R/usr
> hm/R/usr/local
> hm/R/var
> hm/R/home
> etc, where hm/R has property mountpoint=/ and others just inherit it
>
>
> - on servers, zfs allows for non-root user to make snapshots, hold, etc, like
>
> Local+Descendent permissions:
> group operator hold,send,snapshot
>
> - zfs send -R [-i pool@prev-snap] pool@now-snap | \
> ssh backupserver 'zfs recv tgpool/B/zfs/srvname'
>
> Problem:
>
> 0. on backup (zfs recv) server, I could not
> - overwrite mountpoint property (and I'd better avoid it)
> - add canmount=off, especially for child filesets, as it's not inherited (which
> could be preferred behaviour)
>
> 1. after backup server reboot, if special manual tweaks did not have place,
> filesets from backup images overwrite backup filesets, render it unuseable
>
> Any hints?
>
> Or did I missed something trivial?
>
> Thanks, as usual, in advance!
Hi,
On my backup server I have two pools, zfsroot and data. I think I set
things up, and then exported data so that it's not auto-imported at boot.
I then put this in /etc/rc.local
zpool import -N -R /backups data
It lets the pool import filesystems with paths like / or /home
without over-writing the paths on the local system.
Regards,
Gary
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