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Date:      Fri, 27 May 2016 09:30:30 +0200
From:      InterNetX - Juergen Gotteswinter <jg@internetx.com>
To:        esamorokov <esamorokov@gmail.com>, freebsd-fs@freebsd.org, BlackCat <blackcatzilla@gmail.com>
Subject:   Re: ZFS - RAIDZ1 Recovery
Message-ID:  <3af5eba4-4e04-abc4-9fa7-d0a1ce47747e@internetx.com>
In-Reply-To: <5747780A.5000809@gmail.com>
References:  <5747780A.5000809@gmail.com>

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Hi,

after scrolling through the "History" i would wonder if its not
completely messed up now. Less is more in such Situations..

Juergen

Am 5/27/2016 um 12:26 AM schrieb esamorokov:
> Hello All,
> 
>     My name is Evgeny and I have 3 x 3TB in RAIDZ1, where one drive is
> gone and I accidentally
>     screwed the other two. The data should be fine, just need to revert
>     uberblock in point of time, where i started doing changes.
> 
>     I AM KINDLY ASKING FOR HELP! The pool had all of the family memories
> for many years :( Thanks in advance!
> 
>     I am not a FreeBSD guru and have been using ZFS for a couple of
> years, but I know Linux and do some programming/scripting.
>     Since I got that incident I started learning the depth of the ZFS,
> but I definitely need help on it at this point.
>     Please don't ask me why I did not have backups, I was building
> backup server in my garage, when it happened
> 
> History:
>     I was using WEB GUI of FreeNas and it reported a failed drive
>     I shutdown the computer and replaced the drive, but I did not
> noticed that I accidentally disconnected power of another drive
>     I powered on the server and expanded the pool where there only one
> drive of the pool was active
>     Then I began to really learn ZFS and messing up with bits
>     At some point I created a backup bit-to-bit images of the two drives
> from the pool (using R-Studio)
> 
> 
> Specs:
>     OS: FreeBSD 9.2-RELEASE (FREENAS.amd64) #0 r+2315ea3: Fri Dec 20
> 12:48:50 PST 2013
>     RAID:   [root@juicy] ~# camcontrol devlist
>     <ST3000DM001-1CH166 CC29>          at scbus1 target 0 lun 0
> (pass1,ada1)
>     <ST3000DM001-1CH166 CC29>          at scbus2 target 0 lun 0
> (ada2,pass2)
>     <ST3000DM001-9YN166 CC4H>          at scbus3 target 0 lun 0
> (pass3,ada3)
>     [root@juicy] ~# zdb
> zh_vol:
>     version: 5000
>     name: 'zh_vol'
>     state: 0
>     txg: 14106447
>     pool_guid: 2918670121059000644
>     hostid: 1802987710
>     hostname: ''
>     vdev_children: 1
>     vdev_tree:
>         type: 'root'
>         id: 0
>         guid: 2918670121059000644
>         create_txg: 4
>         children[0]:
>             type: 'raidz'
>             id: 0
>             guid: 14123440993587991088
>             nparity: 1
>             metaslab_array: 34
>             metaslab_shift: 36
>             ashift: 12
>             asize: 8995321675776
>             is_log: 0
>             create_txg: 4
>             children[0]:
>                 type: 'disk'
>                 id: 0
>                 guid: 17624020450804741401
>                 path: '/dev/gptid/6e5cea27-7f52-11e3-9cd8-d43d7ed5b587'
>                 whole_disk: 1
>                 DTL: 137
>                 create_txg: 4
>             children[1]:
>                 type: 'disk'
>                 id: 1
>                 guid: 3253299067537287428
>                 path: '/dev/gptid/2b70d9c0-8e40-11e3-aa1c-d43d7ed5b587'
>                 whole_disk: 1
>                 DTL: 133
>                 create_txg: 4
>             children[2]:
>                 type: 'disk'
>                 id: 2
>                 guid: 17999524418015963258
>                 path: '/dev/gptid/1e898758-9488-11e3-a86e-d43d7ed5b587'
>                 whole_disk: 1
>                 DTL: 134
>                 create_txg: 4
>     features_for_read:
> 
> 
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