ZFS: "Cannot replace a replacing drive"

[Wes Morgan]

On Fri, 30 Apr 2010, Wes Morgan wrote:

> On Thu, 29 Apr 2010, Freddie Cash wrote:
>
> > On Thu, Apr 29, 2010 at 6:06 PM, Wes Morgan <morganw at chemikals.org> wrote:
> >
> > > On Wed, 28 Apr 2010, Freddie Cash wrote:
> > >
> > > > Going through the archives, I see that others have run into this issue,
> > > and
> > > > managed to solve it via "zpool detach".  However, looking closely at the
> > > > archived messages, all the successful tests had one thing in common:  1
> > > > drive ONLINE, 1 drive FAULTED.  If a drive is online, obviously it can be
> > > > detached.  In all the cases where people have been unsuccessful at fixing
> > > > this situation, 1 drive is OFFLINE, and 1 drive is FAULTED.  As is our
> > > case:
> > > >
> > >
> > > What happened to the drive to fault it?
> > >
> > > Am in the process of replacing 500 GB drives with 1.5 TB drives, to
> > increase the available storage space in the pool (process went flawlessly on
> > the other storage server).  First 3 disks in the vdev replaced without
> > issues.

Also, where is the original 500gb drive (#4) that you replaced? You should
be able to put that drive back in and let it resilver itself to catch back
up to the other devices, then cancel the replacement.