From owner-freebsd-fs@FreeBSD.ORG  Fri Jul  6 13:53:37 2012
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Date: Fri, 06 Jul 2012 14:53:38 +0100
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To: Matthew Seaman <matthew@FreeBSD.org>
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Cc: freebsd-fs@FreeBSD.org
Subject: Re: ZFS: .zfs/snapshot directory vanished
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On 06/07/12 13:35, Matthew Seaman wrote:
> Only solution I've found to getting the snapshot dirs back is to 
> reboot, but ZFS will crash on shutdown when this problem is occurring. 
> Cheers, Matthew 
This PR is more than a year old spanning all releases from 8.1 to 9.0.

Is there an ugly workaround to wipe all pool disk, recreate the pool, 
restore data and crossing your fingers?
Has anyone tried this?

Is there a suspicion, what triggers this issue?

Thanks,
   Attila