Date: Mon, 17 Sep 2012 17:33:05 +0300 From: Volodymyr Kostyrko <c.kworr@gmail.com> To: Olivier Smedts <olivier@gid0.org> Cc: freebsd-fs@freebsd.org Subject: Re: zpool add log to root pool Message-ID: <505734A1.9000501@gmail.com> In-Reply-To: <CABzXLYMO3NkNws_8eLE21qMxOiTBK5zq9m_Nb_WrRA_fu=D1_Q@mail.gmail.com> References: <CABzXLYMO3NkNws_8eLE21qMxOiTBK5zq9m_Nb_WrRA_fu=D1_Q@mail.gmail.com>
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17.09.2012 15:34, Olivier Smedts wrote:
> Is there anyone here using a separate log device (or "ZIL") on a root pool ?
# zpool set bootfs= tank
> # 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 ?
Me.
# zpool iostat -v faz0
capacity operations
bandwidth
pool alloc free read write
read write
-------------------------------------- ----- ----- ----- -----
----- -----
faz0 121G 173G 22 149
130K 671K
mirror 121G 173G 22 149
130K 659K
gptid/b88daece-7a48-11df-8703-0018f36885d5 - - 10
56 111K 660K
gptid/23ddb9f0-7b04-11df-8867-0018f36885d5 - - 10
56 111K 660K
logs - - - -
- -
gptid/3592d260-c98e-11e0-9ef6-0018f36885d5 1,86M 1014M 0
0 0 11,6K
cache - - - -
- -
gptid/3809bef7-c98e-11e0-9ef6-0018f36885d5 36,3G 8M 71
8 653K 374K
-------------------------------------- ----- ----- ----- -----
----- -----
# zpool get bootfs faz0
NAME PROPERTY VALUE SOURCE
faz0 bootfs - default
--
Sphinx of black quartz judge my vow.
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