Andy Lubel wrote:
> On May 14, 2008, at 10:39 AM, Chris Siebenmann wrote:
>
>> | Think what you are looking for would be a combination of a snapshot
>> | and zfs send/receive, that would give you an archive that you can
>> use
>> | to recreate your zfs filesystems on your zpool at will at later
>> time.
>>
>> Talking of using zfs send/recieve for backups and archives: the
>> Solaris 10U4 zfs manpage contains some blood-curdling warnings about
>> there being no cross-version compatability promises for the output
>> of 'zfs send'. Can this be ignored in practice, or is it a real issue?
>
> It's real! You cant send and receive between versions of ZFS.
The warning is a little scary, but in practice it's not such a big deal.
The man page says this:
The format of the stream is evolving. No backwards com-
patibility is guaranteed. You may not be able to receive
your streams on future versions of ZFS.
To date, the only incompatibility is with send streams created prior
to Nevada build 36 (there probably aren't very many of those, ZFS was
introduced in Nevada build 27), which cannot be received by "zfs receive"
on Nevada build 89 and later.
Note that this incompatibility doesn't affect Solaris 10 at all. All
s10 releases use the new stream format.
More details (and instructions on how to resurrect any pre build 36 streams)
can be found here:
http://opensolaris.org/os/community/on/flag-days/pages/2008042301
-Chris
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