ZFS recovery after power failure

[Gary Palmer]

On Sat, Dec 18, 2010 at 09:48:37PM -0600, James R. Van Artsdalen wrote:
> On 12/18/2010 2:11 PM, James R. Van Artsdalen wrote:
> > I do know how to recover pools. But I do want to know how it failed.
> 
> Er, I meant to say I do NOT know how to recover pools.
> 
> Sergey's failure doesn't fit any pattern I am familiar with.  Loss of
> power should not have been harmful.
> 
> Perhaps 3ware "cheats" and returns success to SYNC before the disk
> actually completes the command?

3ware controllers can be configured with write-back cache even without
a battery backup, which will almost certainly mean loss of
data if the power is pulled.