ZFS Data and Pool Recovery
Another interesting Blog (by Cindy) at: https://blogs.oracle.com/zfs/entry/zfs_data_and_pool_recovery
Some Highlights:
10 years ago, we had the tools to recover when a pool was damaged by changing pool device IDs, but most of us didn't know the steps to recover back then. Because we saw a fondness in the ZFS community for moving hardware underneath ZFS storage pools that had the unfortunate result of changing pool device IDs, we learned the steps to recover, using an existing tool, zdb, that integrated with ZFS (thankfully) back in 2005.
A summary of the steps is to use