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Date:      Mon, 17 Sep 2012 14:34:22 +0200
From:      Olivier Smedts <olivier@gid0.org>
To:        freebsd-fs@freebsd.org
Subject:   zpool add log to root pool
Message-ID:  <CABzXLYMO3NkNws_8eLE21qMxOiTBK5zq9m_Nb_WrRA_fu=D1_Q@mail.gmail.com>

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Hello ZFS folks,

Is there anyone here using a separate log device (or "ZIL") on a root pool ?

# zpool add tank log gpt/zil
cannot add to 'tank': root pool can not have multiple vdevs or separate logs

Under 9-STABLE, using zpool v28. This seems to be a limitation from
OpenSolaris. For example, FreeBSD supports booting from a
multiple-vdev root pool. I found that most people use the "unset
bootfs property, add vdev, set bootfs again" trick to have a working
multiple-vdev root pool under FreeBSD. I think I can do the same for
the log device but don't want to loose my data.

Is there anyone successfuly using a log device / zil on a root pool
under FreeBSD ?

Thanks

-- 
Olivier Smedts                                                 _
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  "Il y a seulement 10 sortes de gens dans le monde :
  ceux qui comprennent le binaire,
  et ceux qui ne le comprennent pas."



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