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Date:      Fri, 17 Sep 2010 08:35:04 -0700
From:      Gil Vidals <gvidals@gmail.com>
To:        freebsd-fs@freebsd.org
Subject:   Re: what happens to pool if ZIL dies on ZFS v14
Message-ID:  <AANLkTin0LwQz%2BWi5cBOcHuVqyOz3%2BfFR7YC_=f2L5CyX@mail.gmail.com>
In-Reply-To: <4C9385B0.2080909@shatow.net>
References:  <AANLkTi=vYVG300nhMjkcLju=kQhBdPJDqyaXR0mG84%2Bp@mail.gmail.com> <4C9385B0.2080909@shatow.net>

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Bryan thank you for the detailed answer.

Assuming the ZIL SSD died, what steps would I follow to recover the pool? (i
hope it is recoverable).

-Gil Vidals / VMRacks.com

On Fri, Sep 17, 2010 at 8:13 AM, Bryan Drewery <bryan@shatow.net> wrote:

> Gil Vidals wrote:
>
>> I read a forum post claiming that FreeBSD's ZFS v13 will not continue to
>> function normally when the dedicated ZIL devices dies or goes away.
>> Apparently the Solaris version of ZFS does support losing the ZIL. So can
>> somebody confirm what happens in FreeBSD 8.1 (ZFS v14)?
>>
>>
>>
> Yes that is correct. You should mirror your log devices to avoid problems.
>
> zfs v19 allows removing log devices - so mirroring will not be necessary
> after that point.
> opensolaris$ zpool upgrade -v|grep Log
> 19  Log device removal
>
>
> Bryan
>



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