Date: Thu, 8 Nov 2012 16:47:43 -0000 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Beeblebrox" <zaphod@berentweb.com>, <freebsd-fs@freebsd.org> Subject: Re: [ZFS] How to fix corrupt ZDB Message-ID: <29E4BB2D5E9840E799915414365B6CB1@multiplay.co.uk> References: <1352294866076-5758864.post@n5.nabble.com> <509A66D2.5060706@gmail.com> <8F907219A6904829A66E1E9A01696CF4@multiplay.co.uk> <1352356496801-5759081.post@n5.nabble.com> <1352370415751-5759123.post@n5.nabble.com> <20121108143726.GB24320@in-addr.com> <1352390860142-5759205.post@n5.nabble.com>
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----- Original Message -----
From: "Beeblebrox" <zaphod@berentweb.com>
To: <freebsd-fs@freebsd.org>
Sent: Thursday, November 08, 2012 4:07 PM
Subject: Re: [ZFS] How to fix corrupt ZDB
> output for *# zdb* is the same as *# zdb -C*
> bsdr:
> version: 28
> name: 'bsdr'
> state: 0
> txg: 43281
> pool_guid: 18171682415991203571
> hostid: 2739729201
> hostname: 'rbsd.me'
> vdev_children: 2
> vdev_tree:
> type: 'root'
> id: 0
> guid: 18171682415991203571
> children[0]:
> type: 'disk'
> id: 0
> guid: 3768638969829014374
> path: '/dev/ada0'
> phys_path: '/dev/ada0'
> whole_disk: 1
> metaslab_array: 30
> metaslab_shift: 31
> ashift: 9
> asize: 320068124672
> is_log: 0
> DTL: 42
> create_txg: 4
> children[1]:
> type: 'disk'
> id: 1
> guid: 1129540067409051140
> path: '/dev/ada1p9'
> phys_path: '/dev/ada1p9'
> whole_disk: 1
> metaslab_array: 166
> metaslab_shift: 24
> ashift: 12
> asize: 2035548160
> is_log: 1
> create_txg: 23549
> Interestingly, the log on SSD /dev/ada1p9 correctly shows ashift 12 - So
> that is correct. Root pool is on a regular samsung (no 4k).
>
> *# zdb -l /dev/ada0*
> LABEL 0
> --------------------------------------------
> version: 28
> name: 'bsdr'
> state: 0
> txg: 43281
> pool_guid: 18171682415991203571
> hostid: 2739729201
> hostname: 'rbsd.me'
> top_guid: 3768638969829014374
> guid: 3768638969829014374
> vdev_children: 2
> vdev_tree:
> type: 'disk'
> id: 0
> guid: 3768638969829014374
> path: '/dev/ada0'
> phys_path: '/dev/ada0'
> whole_disk: 1
> metaslab_array: 30
> metaslab_shift: 31
> ashift: 9
> asize: 320068124672
> is_log: 0
> DTL: 42
> create_txg: 4
> The exact same information is repeated 4 times from LABEL 0 -> LABEL 3
>
> *# zdb -l /dev/ada1p9 *
> LABEL 0
> --------------------------------------------
> version: 28
> name: 'bsdr'
> state: 0
> txg: 43281
> pool_guid: 18171682415991203571
> hostid: 2739729201
> hostname: 'rbsd.me'
> top_guid: 1129540067409051140
> guid: 1129540067409051140
> is_log: 1
> vdev_children: 2
> vdev_tree:
> type: 'disk'
> id: 1
> guid: 1129540067409051140
> path: '/dev/ada1p9'
> phys_path: '/dev/ada1p9'
> whole_disk: 1
> metaslab_array: 166
> metaslab_shift: 24
> ashift: 12
> asize: 2035548160
> is_log: 1
> create_txg: 23549
> The exact same information is repeated 4 times from LABEL 0 -> LABEL 3
>
> It looks like I made a big deal out of nothing?
Yep that all looks good to me. Your pool is using 512 byte
blocks and your log is using 4k so all fine :)
Regards
Steve
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