zfs dump to non-zfs host

[Brooks Davis]

On Sun, Jun 15, 2008 at 12:27:50PM -0700, Jeremy Chadwick wrote:
> 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.

Clearly someone needs to teach libarchive to speak zfs send-recieve so people
can save these things in tarballs. 1/2 :-)

-- Brooks
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