misc/156745: [ZFS] Shows garbage in zdb when moving snapshot send -> recv between the different pools

[Jason Hellenthal]

The following reply was made to PR misc/156745; it has been noted by GNATS.

From: Jason Hellenthal <jhell at DataIX.net>
To: "Vladislav V. Prodan" <universite at ukr.net>
Cc: bug-followup at freebsd.org
Subject: Re: misc/156745: [ZFS] Shows garbage in zdb when moving snapshot
 send -> recv between the different pools
Date: Sat, 30 Apr 2011 17:12:53 -0400

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 Vladislav,
 
 I have looked over this a few times since it was received. zdb(1M) is
 acting exactly as it should in this case. The output is not actually
 garbage and is a strict report about the pool.
 
 If I have missed something that should have been obvious from your PR
 could you please be as kind to point out ``exactly'' what that is ?
 
 If not then this PR can be closed.
 
 
 This type output is normal when zdb(1) is used direct with a pool name.
 [...]
 >Uberblock
 >
 >        magic =3D 0000000000bab10c
 >        version =3D 15
 >        txg =3D 9377
 >        guid_sum =3D 17399259419442703115
 >        timestamp =3D 1304191816 UTC =3D Sat Apr 30 22:30:16 2011
 >
 >Dataset mos [META], ID 0, cr_txg 4, 2.42M, 204 objects
 >
 >Metaslabs:
 >        vdev         offset                spacemap          free
 >        ----------   -------------------   ---------------   -------------
 >        vdev     0   offset            0   spacemap     26   free    3.27G
 >        vdev     1   offset    100000000   spacemap    125   free    2.81G
 >        vdev     2   offset    200000000   spacemap    224   free     121M
 >        vdev     3   offset    300000000   spacemap    225   free    3.02G
 >        vdev     4   offset    400000000   spacemap    226   free    1.58G
 >        vdev    41   offset   2900000000   spacemap      0   free       4G
 [...]
 >
 >Dataset zroot/tmp [ZPL], ID 31, cr_txg 10, 40.1M, 32 objects
 >Dataset zroot/mysql/iblogs [ZPL], ID 209, cr_txg 525, 10.0M, 6 objects
 >Dataset zroot/mysql/ibdata [ZPL], ID 203, cr_txg 522, 21.0K, 4 objects
 >Dataset zroot/mysql [ZPL], ID 197, cr_txg 517, 24.0K, 6 objects
 >Dataset zroot/var/crash [ZPL], ID 79, cr_txg 31, 22.5K, 5 objects
 [...]
 
 --=20
 
  Regards, (jhell)
  Jason Hellenthal
 
 
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