kern/162342: FreeBSD hides gpt labels after mounting ZFS partitions

[Jeff Lawson]

The following reply was made to PR kern/162342; it has been noted by GNATS.

From: Jeff Lawson <jeff at bovine.net>
To: freebsd-gnats-submit at freebsd.org
Cc:  
Subject: Re: kern/162342: FreeBSD hides gpt labels after mounting ZFS partitions
Date: Sun, 6 Nov 2011 22:43:34 -0600

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 My /etc/zfs/zpool.cache indeed references only the /dev/gptid/ GUIDs for
 the drives.  In my case, I added the drive to the pool with its GPT label
 using a /dev/gpt/ specifier.  I verified that "zpool status" showed the new
 drive being resilvered and that it used a gpt label.  After the resilver
 completed, I rebooted, had to use "zpool import", and observed that "zpool
 status" now used a gptid for both drives.
 
 Regardless of whether ZFS is using gptid to access a disk, I don't see why
 the label should disappear.  It should continue to be available as an alias
 if the user wants to reference it.
 
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 My /etc/zfs/zpool.cache indeed references only the /dev/gptid/ GUIDs for th=
 e drives.=C2=A0 In my case, I added the drive to the pool with its GPT labe=
 l using a /dev/gpt/ specifier.=C2=A0 I verified that &quot;zpool status&quo=
 t; showed the new drive being resilvered and that it used a gpt label.=C2=
 =A0 After the resilver completed, I rebooted, had to use &quot;zpool import=
 &quot;, and observed that &quot;zpool status&quot; now used a gptid for bot=
 h drives.<br>
 
 <br>Regardless of whether ZFS is using gptid to access a disk, I don&#39;t =
 see why the label should disappear.=C2=A0 It should continue to be availabl=
 e as an alias if the user wants to reference it.<br>
 
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