Comments on: ZFS, Leopard and baseless speculation

By: Dick Davies

Dick Davies — Mon, 26 Nov 2007 00:17:02 +0000

@Stan : my guess is that ‘OSX directory type’ is going to be related to the directory hard links required to do Time Machine. But I just signed up to the Developer Program (so I can get read/write) and that means I have to keep quiet now

By: Stan

Stan — Sun, 11 Nov 2007 00:26:16 +0000

You can see a short summary of the zpool versions Leopard supports at the command line. This is what my system shows with the ZFS 1.1 read/write kernel extension from the Apple Dev site:

Rover:~ stan$ sudo zpool upgrade -v
This system is currently running ZFS version 6.

The following versions are supported:
VER  DESCRIPTION
---  --------------------------------------------------------
 1   Initial ZFS version
 2   Ditto blocks (replicated metadata)
 3   Hot spares and double parity RAID-Z
 4   zpool history
 5   Compression using the gzip algorithm
 6   bootfs pool property  and OSX directory type
For more information on a particular version, including supported releases, see:

http://www.opensolaris.org/os/community/zfs/version/N

Where 'N' is the version number.

Not sure what “OSX directory type” means, but it isn’t listed on the ZFS version page. It looks like Sun is already up to zpool version 9, so hopefully we’ll see a Apple ZFS 1.2 kernel extension posted on the ADC in the near future.

By: Stan

Stan — Sun, 11 Nov 2007 00:01:01 +0000

Take a look at http://www.opensolaris.org/os/community/zfs/version/6/ ZFS Pool Version 6 This page describes the feature available with version 6 of the ZFS on-disk format. This version includes support for the following feature: * ‘bootfs’ pool property This feature is available in: * Solaris Nevada Build 62 The related bugs for version 6 changes are as follows: * 4929890 ZFS Boot support for the x86 platform * 6479807 pools need properties