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Date: Sun, 28 Jun 2015 17:46:31 -0700
Message-ID: <CAPi0psvzYhCw-GMEJjA0jkUL53PrzxJFHKh3tQUbwyEdo60jag@mail.gmail.com>
Subject: Re: Corrupt GPT on ZFS full-disks that shouldn't be using GPT
From: Chris Stankevitz <chrisstankevitz@gmail.com>
To: kpneal@pobox.com
Cc: Quartz <quartz@sneakertech.com>, 
 freebsd-questions <freebsd-questions@freebsd.org>
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On Sun, Jun 28, 2015 at 4:22 PM,  <kpneal@pobox.com> wrote:
> I'm not sure if offlining the disk you are touching will make any difference.
> It may just make recovery more complicated. If it was me I'd just zero the
> last block without the offline/online dance.

Kevin,

Thank you.  Can I use dd on a /dev/daX that is currently part of an
imported, mounted, and online zpool?  Also, if anyone can answer this
question more generally, I'd appreciate it: are there times (other
than r-x) when I do not have permission/ability to dd if=/dev/zero
of=/dev/daX?

Chris