Date: Sun, 15 Jun 2008 12:27:50 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Randy Bush <randy@psg.com> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: zfs dump to non-zfs host Message-ID: <20080615192750.GA14559@eos.sc1.parodius.com> In-Reply-To: <48532183.2040306@psg.com> References: <48532183.2040306@psg.com>
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On Sat, Jun 14, 2008 at 10:40:19AM +0900, Randy Bush wrote: > currently, my dump server is a large non-zfs raid to which i use dump > over ssh to a remote host, as in > > /sbin/dump 0Luaf - /dev/twed0s1a | $SSH $BSYS "/bin/cat > $DDIR/base" > > now i have a zfs host that i want to dump to this server. yes, i know i > can snapshot on the zfs system itself. but what if it goes completely > dead? it is in an earthquake zone, ... > > /sbin/dump does not work, of course. > > files created with zsend might not be decodable in a future version, so > i can not zsend | to it. The only two options I see are "zfs send" (which you've covered), and using rsync for that host. We switched to rsync exclusively (regardless of fuilesystem) due to dump -L becoming slower and slower over time on UFS2 filesystems (a known problem), plus more or less deadlocking the system while it makes the snapshot. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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