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Subject: Re: Stale zpool from a prior life in "zpool import"
To: FreeBSD Questions <freebsd-questions@freebsd.org>
References: <3aff436c-4e15-ec41-5b54-532cc036fdc0@toyon.com>
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From: Chris Stankevitz <chris@stankevitz.com>
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Date: Wed, 15 Feb 2017 00:34:34 -0800
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On 2/14/17 10:05 PM, Chris Stankevitz wrote:
> On 2/14/17 12:45 PM, Chris Stankevitz wrote:
>> How do I remove the UNAVAIL zpool?
>
> Here's how I solved this:
>
> 1. use "zdb -l /device" on my devices to figure out which ones held
> references to these ghost zpools.  I had to call this on my raw disks,
> the partitions, and the decrypted .eli devices to catch them all
>
> 2. for each of the devices discovered with ghost zpool data, I ran
> "zpool labelclear -f /device".  Unfortunately this destroyed the geli
> metadata.  grrr.
>
> 3. I was careful about the order in which I called labelclear so that if
> devices were destroyed (which they were) a resilver would have brought
> my pool back.  However, the geli folks backed up the metadata to
> /var/backups during init.  I used "geli restore /var/backups/foo.eli
> /dev/gpt/foo" on the affected partitions to restore the encrypted
> partitions.  I wonder what else "zpool labelclear" could have destroyed
> (gpt???).

4. I also had to follow this up with a gpart recover

Chris