Using GTP and glabel for ZFS arrays

Dan Langille dan at
Fri Jul 23 11:24:23 UTC 2010

On 7/22/2010 9:51 PM, Pawel Tyll wrote:
>> So... the smaller size won't mess things up...
> If by smaller size you mean smaller size of existing
> drives/partitions, then growing zpools by replacing smaller vdevs
> with larger ones is supported and works. What isn't supported is
> basically everything else:
> - you can't change number of raid columns (add/remove vdevs from raid)
> - you can't change number of parity columns (raidz1->2 or 3)
> - you can't change vdevs to smaller ones, even if pool's free space
> would permit that.

Isn't what I'm doing breaking the last one?

> Good news is these features are planned/being worked on.
> If you can attach more drives to your system without disconnecting
> existing drives, then you can grow your pool pretty much risk-free.
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Dan Langille -

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