On Wed, Jun 1, 2011 at 12:45 PM, Eric Sproul <espr...@omniti.com> wrote:
> On Wed, Jun 1, 2011 at 2:54 PM, Matt Harrison > <iwasinnamuk...@genestate.com> wrote: > > Hi list, > > > > I've got a pool thats got a single raidz1 vdev. I've just some more disks > in > > and I want to replace that raidz1 with a three-way mirror. I was thinking > > I'd just make a new pool and copy everything across, but then of course > I've > > got to deal with the name change. > > > > Basically, what is the most efficient way to migrate the pool to a > > completely different vdev? > > Since you can't mix vdev types in a single pool Side note: you most certainly can mix vdevs in a pool. It's not recommended, nor even suggested, but it's most certainly possible. You just have to add -f to the "zpool add" command. I use this at home, where my pool has a 3-disk raidz1 vdev (SATA1) and a 2-disk mirror vdev (IDE). I can't connect to my home machine right now, so can't post the "zpool status" output. But if you want to see it in action, I'll post when I get home. That said, you can't remove top-level vdevs (raidz*, mirror, single) from a pool, so you can't "add" a new vdev and "remove" the old vdev to convert between vdev types. The only solution to the OP's question is to create a new pool, transfer the data, and destroy the old pool. There are several ways to do this. -- Freddie Cash fjwc...@gmail.com
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