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Date:      Sat, 29 Apr 2017 06:15:14 +0100
From:      Steve O'Hara-Smith <>
Subject:   Re: A seperate ZFS question
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <>

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On Fri, 28 Apr 2017 22:19:33 +0100
Paul Macdonald <> wrote:

> all this so far i knew,
> It's an entirely unwanted config, and i'll likely just migrate either 
> the data or the jails to another box, but  i'd hoped to understand what 
> the config  meant under ZFS:
> As i understand from comments,  i have effectively created a mis-sized 
> RAID0 (stripe) between a SATA mirror set and a single SSD,


> i'm now very glad i didn't just unplug the SSD drive and instead added a 
> 2nd SSD  for the actual cache

	Good call.

> So i guess i have until the SSD fails (or presumably until the SSD 
> reaches its capacity to fix this)

	Not necessarily - what version of FreeBSD are you on ? If it's 11
you may be able to remove the SSD with zpool remove (if it's 10 you can't).
Failing that your options are:

	Live with it - but if/when the SSD fails you lose data

	Expand the pool by mirroring then replacing the SSD

	Backup, rebuild, restore

Steve O'Hara-Smith <>

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