What is new in v28 (compared to v15)?
- data deduplication
- triple parity RAIDZ
- removal of log devices
- zfs diff
- zpool split
- snapshot holds
To patch and compile, you may need the following patches:
http://people.freebsd.org/~pjd/patches/zfs_20100831.patch.bz2 (from Pawel Jakub Dawidek)
http://people.freebsd.org/~mm/patches/zfs/atomic.h.patch (from Pawel Jakub Dawidek)
http://people.freebsd.org/~mm/patches/zfs/head-zfs-v19-boot.patch (optional, v19 boot support)
To correctly apply the patches, bunzip2 the first patch and use the following commands in the following order:
patch -E -p0 < /path/to/zfs_20100831.patch
patch -E -p0 < /path/to/atomic.h.patch
patch -E -p0 < /path/to/head-zfs-v19-boot.patch (optional, v19 boot support)
Users who do not want to patch and compile can try the following:
- Virtualbox appliance from Pawel Jakub Dawidek
mfsBSD ISO image of 9-CURRENT-amd64 with zfsinstall and ZFS v28 (v19 boot support)
Please help us testing and submit any bug reports found to the freebsd-current (freebsd-current@FreeBSD.org) or freebsd-fs (freebsd-fs@FreeBSD.org) mailing lists.
To make our bug busting easier, please create a debugging environment as specified in .
Please ignore all the LOR (Lock Order Reversal) reports from WITNESS (there will be many) and don't report these.
Thank you very much for participating!
 ZFS v28 patch announcement from Pawel Jakub Dawidek
 ZFS pool and filesystem versions (blog.vx.sk)
 mfsBSD Homepage
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