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Date:      Thu, 23 Aug 2012 10:55:03 +0200
From:      Peter Maloney <peter.maloney@brockmann-consult.de>
To:        freebsd-fs@freebsd.org
Subject:   Re: Hang when importing pool
Message-ID:  <5035EFE7.9030007@brockmann-consult.de>
In-Reply-To: <3455173D-0875-4BFF-ABFF-CCEDEDD75DFE@slu.se>
References:  <D13A3EA7-B229-4B78-915E-A3CC3162DB8A@slu.se> <CAOjFWZ52XvMO%2BA7cwa3fnkJcXMCbGgWD91gvZsmW8Navh0AZ9A@mail.gmail.com> <49C9D08A-85EF-4D23-B07F-F3980CBA5A97@slu.se> <20120815073135.GO6757@squishy.elizium.za.net> <A55DD110-E99D-4904-9C98-A65D6A455F9C@slu.se> <CAOfEmZi0W1n2fm4XX%2BpuWOhdG2ao=MJ%2BD4=b18CVWn=vcjDrjA@mail.gmail.com> <E8DC9806-D374-4B2D-B559-F1D27A8E868F@slu.se> <CAOfEmZhaecVbHv9V8G5h4E0ZAyM63_w5sLH-HQrGeXx46U-%2BGA@mail.gmail.com> <02807469-A09D-4692-8530-CCAE31ED0534@slu.se> <CAOfEmZjAGXnjD700unB10ex7y9_SL=gKgLsGB0czJsKiQLRV%2BQ@mail.gmail.com> <DCC13D23-5F36-49C0-9A54-F72B063454F3@slu.se> <CAOfEmZho-1RS=51%2BChLRn4bFKir8uan-=RxrzvJjeLDQBr366A@mail.gmail.com> <3455173D-0875-4BFF-ABFF-CCEDEDD75DFE@slu.se>

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On 08/23/2012 10:26 AM, Karli Sjöberg wrote:
>
> Wow, really, thanks! Thanks a bunch! Though it may very well be just another dead end, I want to be able to say I really have done everything possible before being forced to throw a years worth of research(the data "trapped" inside the pool) down the drain. Again, thanks!
>

Without having any experience with zfs data recovery, I suggest you at
least try, before abandoning that data, if it is very valuable.

Here is a random link I found where a guy demonstrated getting  a file
out of raidz:

http://mbruning.blogspot.de/2009/12/zfs-raidz-data-walk.html

Getting a whole file system would likely be a lot of work though.


And I asked before, but you didn't answer... have you tried importing it
in Solaris? FreeBSD is not perfect, you know.... maybe ZFS has a few
advantages on its native platform. (and I would back up with dd before
doing anything that can change the data, but you've probably already
missed that opportunity on your first "-f" import)



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