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Oracle Solaris ZFS Administration Guide

Appendix A Oracle Solaris ZFS Version Descriptions

This appendix describes available ZFS versions, features of each version, and the Solaris OS that provides the ZFS version and feature.

The following sections are provided in this appendix:

Overview of ZFS Versions

New ZFS pool and file system features are introduced and accessible by using a specific ZFS version that is available in Solaris releases. You can use the zpool upgrade or zfs upgrade to identify whether a pool or file system is at lower version than the currently running Solaris release provides. You can also use these commands to upgrade your pool and file system versions.

For information about using the zpool upgrade and zfs upgrade commands, see Upgrading ZFS File Systems (zfs upgrade) and Upgrading ZFS Storage Pools.

ZFS Pool Versions

The following table provides a list of ZFS pool versions that are available in the Solaris releases.

Version 

Solaris 10 

Description 

1 

Solaris 10 6/06 

Initial ZFS version  

2  

Solaris 10 11/06 

Ditto blocks (replicated metadata)  

3 

Solaris 10 11/06 

Hot spares and double parity RAID-Z 

4 

Solaris 10 8/07 

zpool history

5  

Solaris 10 10/08 

gzip compression algorithm

6  

Solaris 10 10/08 

bootfs pool property

7  

Solaris 10 10/08 

Separate intent log devices  

8  

Solaris 10 10/08 

Delegated administration  

9  

Solaris 10 10/08 

refquota and refreservation properties

10  

Solaris 10 5/09 

Cache devices 

11  

Solaris 10 10/09 

Improved scrub performance 

12  

Solaris 10 10/09 

Snapshot properties  

13  

Solaris 10 10/09 

snapused property

14  

Solaris 10 10/09 

aclinherit passthrough-x property

15  

Solaris 10 10/09 

user and group space accounting 

16 

Solaris 10 9/10 

stmf property support

17 

Solaris 10 9/10 

Triple-parity RAID-Z 

18  

Solaris 10 9/10 

Snapshot user holds 

19 

Solaris 10 9/10 

Log device removal 

20  

Solaris 10 9/10 

Compression using zle (zero-length encoding)

21  

Solaris 10 9/10 

Reserved 

22 

Solaris 10 9/10 

Received properties 

ZFS File System Versions

The following table lists the ZFS file system versions that are available in the Solaris releases.

Version 

Solaris 10 

Description 

1 

Solaris 10 6/06 

Initial ZFS file system version  

2  

Solaris 10 10/08 

Enhanced directory entries  

3 

Solaris 10 10/08 

Case insensitivity and file system unique identifier (FUID) 

4 

Solaris 10 10/09 

userquota and groupquota properties