- RAID-Z/mirror hybrid allocator "Normally mirror vdevs contain mirrored data, RAID-Z vdevs contain RAID-Z data, etc. However, for latency-sensitive metadata, we can use a mirrored layout across the children of a RAID-Z vdev. This ensures that such metadata can be read in a single I/O."
- Support for decompression, checksumming and raidz in zdb -R will make it much easier to debug ZFS errors on disk or just to learn more about the on-disk format of ZFS.
- Performance improvements for listing ZFS filesystems.
The downside of this is that these are features only present in Oracles internal gate and not other distribution besides Solaris 11/Express and the S7000/FishWork appliances can use them until and if Oracle releases the source after Solaris 11 is released.
I hope the Solaris 11 Express license will allow me to use Solaris 11 for my private storage needs, S7000 are nice and deployed at work but still a bit too expensive for my datacenter at home ;)
6977913 RAID-Z/mirror hybrid allocator
6757444 want zdb -R to support decompression, checksumming and raid-z