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From: John Theus <john@theusgroup.com>
To: Martin Matuska <mm@FreeBSD.org>
Subject: Re: [CFT] libzfs_core for 9-STABLE
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Comments: In-reply-to Martin Matuska <mm@FreeBSD.org>
 message dated "Fri, 22 Mar 2013 13:38:46 +0100."
Date: Sat, 06 Apr 2013 14:50:41 -0700
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>Hello all,
>
>libzfs_core and the rewritten locking code around dsl_sync_dataset
>have been commited to -HEAD:
>http://svnweb.freebsd.org/changeset/base/248571
>
>The scheduled merge date to 9-STABLE is around Apr 21, 2013.
>
>Early adopters can test new code by applying the following patch
>(against stable/9 r248611):
>http://people.freebsd.org/~mm/patches/zfs/stable-9-248611-lzc.patch.gz
>
>Steps to apply to a clean checked-out source:
>cd /path/to/src
>patch -p0 < /path/to/stable-9-248611-lzc.patch
>
>Alternatively you can download a pre-compiled amd64 mfsBSD image for testing:
>(see http://mfsbsd.vx.sk for more information on mfsBSD)
>http://mfsbsd.vx.sk/files/testing/
>
>I am primarily interested in the following areas of feedback:
>- stability
>- backward compatibility (new kernel, old utilities)
>
>Feedback and suggestions are welcome.
>
>-- 
>Martin Matuska
>FreeBSD committer
>http://blog.vx.sk

I upgraded both kernel and world on a machine that was running 9.1-STABLE
r248385 to the above:
9.1-STABLE #1 r248619M: Mon Mar 25 14:16:45 PDT 2013

This machine is used for zfs send/recv backups and it has been stable since the
upgrade.

By a chance typo, I found a problem in zfs release which doesn't exist on an
unpatched machine. To reproduce just do the following:

# zfs hold test filesystem@snap
# zfs release test filesystem@snap1   # snap1 does not exist
# (no error message produced)

# zfs release test filesystem@snap
# zfs release test filesystem@snap
internal error: No such process
[1]    857 abort      zfs release test
#

John Theus
TheUsGroup.com