Various ZFS news

Adam leventhal of the Fishwoks team have tested the DDRDrive X1 as a ZIL in the hybrid storage pool. It is 4GB of NV-RAM backed by flash, which is quite a good match for the ZIL requirements. You can read about his finding on his blog. For a good explanation on ZIL and synchronious writes go and read Constantin Gonzalez latest entry in his blog.

Mirrored root pools been available since the introduction of ZFS boot, but the step for writing the placing a boot block on the mirror to make it usable after a disk failure have remained a manual step, but the automatic fix for this have now mad it into on_145:

6668666 zpool command should put a bootblock on a disk added as a mirror of a root pool vdev.