ZFS resize disk vdev

[Zaphod Beeblebrox]

On Mon, Dec 15, 2008 at 4:12 PM, Bryan Alves <bryanalves at gmail.com> wrote:


> In the case of option one, after this stripe of 2 raidz's is created
> though, those old drives can't be pulled from the array can they?  More
> specifically, after we "upgrade" to what would be termed Raid50, we can't
> "downgrade" back to Raid5, right?
>

According to the ZFS website, the ability of removing vdevs is planned but
not yet implemented.  You can also not shink a vdev... so you're not losing
any functionality there.  Even if your hardware raid supported shrinking the
array, ZFS would not.