bin/144214: zfsboot fails on gang block after upgrade to zfs v14

[Robert Noland]

The following reply was made to PR bin/144214; it has been noted by GNATS.

From: Robert Noland <rnoland at FreeBSD.org>
To: Andriy Gapon <avg at icyb.net.ua>
Cc: bug-followup at FreeBSD.org, c.kworr at gmail.com
Subject: Re: bin/144214: zfsboot fails on gang block after upgrade to zfs
 v14
Date: Thu, 13 May 2010 08:52:14 -0500

 Andriy Gapon wrote:
 > It seems that I have been misunderstanding the problem.
 > "ZFS: gang block detected" won't even appear if boot code is too old.
 > 
 > Having briefly glanced over the code and comparing it to the code in osol and in
 > zio_gang_tree_issue(), I think the following change is needed.
 > But I am not sure if it is a real fix for the issue at hand.
 > 
 > If anyone can reproduce the problem, could you please test this change?
 > Thanks!
 
 This looks sane.  I was never actually able to test it, since 
 reproducing the issue is rather tricky.
 
 robert.
 
 >