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Date:      Fri, 26 Aug 2011 22:04:58 -0600 (MDT)
From:      Warren Block <>
To:        Adam Vande More <>
Subject:   Re: glabel, gmirror, and gpart
Message-ID:  <>
In-Reply-To: <>
References:  <> <>

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On Fri, 26 Aug 2011, Adam Vande More wrote:

> On Fri, Aug 26, 2011 at 8:09 PM, Warren Block <> wrote:
>       Question 2 is maybe simpler.  On boot, it shows this:
>        gptboot: invalid backup GPT header
>       I can speculate on what causes that (whether the various g-things use the absolute last block of the device, or the last block of their area and provide their total minus
>       one block; or it could be that gptboot is seeing the disk rather than the gmirror device).  Can it be fixed?
> This is a long standing issue that still isn't fixed to the best of my knowledge.  The problem is with gmirror and GPT. 
> is the best I can do.


So it's cosmetic, but not really the kind of message that instills 
confidence.  gptboot needs to be able to tell if it's reading from a 
gmirror.  Or gmirror should provide one block less than it does, so it 
doesn't overwrite the GPT backup.

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