What's New in OpenZFS

Matt Ahrens talks about new features in Open (Illumos) ZFS. Some of the performance improvements Matt is talking about have their equivalents in Solaris 11 for some time now though and there are many more, for example:

6282155 arc doesn't always need to make a copy
15613053 : SUNBT6913905 IMPLEMENT ATA TRIM, SCSI WRITE SAME / UNMAP , THIN RECLAMATION
6281079 ZFS I/O priority inversion
6914162 Dedup of null blocks could use special treatment
6662450 L2ARC in memory overhead should be reduced
6957289 ARC metadata limit can have serious adverse effect on dedup performance
6896307 arc_meta_limit modernization
...

Then Solaris 11 ZFS also has encryption, up-to 1MB recordsize, RAID-Z/mirror hybrid allocator, it does support 4k sector, and there are more new features and improvements to ZFS. Then I like LZ4 support in Illumos which is not in Solaris 11... It is good to see though that both Illumos and Oracle are innovating around ZFS. From end-user perspective it is a shame in a way that they do not actively share code though. On the other hand a little bit of competition might be good after all. We will see. ps. notice that the video contains more updates on different technologies around Illumos and they are worth watching as well.