Solaris 10 u6 Has No '-u' on "zfs receive"

Despite what you might read at docs.sun.com, Solaris 10 update 6 doesn’t have a “-u” option for zfs receive.

jmcmurry@lemon $ cat /etc/release
Solaris 10 10/08 s10s_u6wos_07b SPARC
Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
Use is subject to license terms.
Assembled 27 October 2008
jmcmurry@lemon $ zfs receive -u
invalid option 'u'

This could’ve been brought to my attention before I decided to create my ZFS export streams recursively. One at a time, I’d have been fine. What seemed to be an awesome way to retrofit a metadata slice for an SVM volume into a whole disk ZFS root install turned out to be a miserable trail of heartache and pain.

But I can take it; I am a Unix guy.

UPDATE: “-u” seems to be in Solaris 10 update 7, but even there, it’s not in the man page for zfs(1M). Thanks so much for updating the docs without indicating that the “recover your root storage” function only works on the OS release that you made available for download today.

/grrr