Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-11 Thread David Magda
On Jun 10, 2011, at 17:25, Volodymyr Kostyrko wrote: Am I missing something? How about using fletcher[24] for dedup? Fletcher is fairly weak as things go, and so even though two checksums are the same, there's a decent chance that the data is actually different. At least with recent releases

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-11 Thread David Magda
On Jun 10, 2011, at 17:24, Bob Friesenhahn wrote: Dedup can require a huge amount of RAM, or a dedicated L2ARC SSD, depending on the size of your storage. You should not enable it unless you are prepared for the consequences. Under OpenSolaris, each tracking entry for a deduped block

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-10 Thread Jeremy Chadwick
On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: I have merged ZFS version 28 to 8-STABLE (revision 222741) Follow-up, since we're gradually upgrading our ZFS-based RELENG_8 servers to ZFSv28. Committers/those involved should see my very last paragraph. First, server upgrades:

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-10 Thread Bob Friesenhahn
On Fri, 10 Jun 2011, Jeremy Chadwick wrote: We tried using dedup on one of our systems, but within 10-15 minutes turned it off. I believe the added CPU overhead of dedup was causing the system to act bursty in other non-ZFS-related tasks; e.g. turn on dedup, then in a SSH window hold down the

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-10 Thread Volodymyr Kostyrko
06.06.2011 13:53, Martin Matuska написав(ла): Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication Am I missing something? How about using fletcher[24] for dedup? -- Sphinx of black quartz judge my vow.

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-08 Thread Marius Strobl
On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication - triple parity RAIDZ (RAIDZ3) - zfs diff - zpool split - snapshot holds - zpool import -F. Allows to rewind

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-08 Thread Marius Strobl
On Thu, Jun 09, 2011 at 12:46:19AM +0200, C. P. Ghost wrote: On Wed, Jun 8, 2011 at 11:12 PM, Marius Strobl mar...@alchemy.franken.de wrote: On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-08 Thread C. P. Ghost
On Thu, Jun 9, 2011 at 12:55 AM, Marius Strobl mar...@alchemy.franken.de wrote: On Thu, Jun 09, 2011 at 12:46:19AM +0200, C. P. Ghost wrote: On Wed, Jun 8, 2011 at 11:12 PM, Marius Strobl mar...@alchemy.franken.de wrote: On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: Hi,

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-08 Thread C. P. Ghost
On Wed, Jun 8, 2011 at 11:12 PM, Marius Strobl mar...@alchemy.franken.de wrote: On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication - triple parity RAIDZ (RAIDZ3) - zfs

HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-06 Thread Martin Matuska
Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication - triple parity RAIDZ (RAIDZ3) - zfs diff - zpool split - snapshot holds - zpool import -F. Allows to rewind corrupted pool to earlier transaction group - possibility to import pool in

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-06 Thread Jeremy Chadwick
On Mon, Jun 06, 2011 at 12:53:11PM +0200, Martin Matuska wrote: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication - triple parity RAIDZ (RAIDZ3) - zfs diff - zpool split - snapshot holds - zpool import -F. Allows to rewind

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-06 Thread Boris Kochergin
On 06/06/11 06:53, Martin Matuska wrote: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) New major features: - data deduplication - triple parity RAIDZ (RAIDZ3) - zfs diff - zpool split - snapshot holds - zpool import -F. Allows to rewind corrupted pool to earlier

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-06 Thread Lystopad Olexandr
Hello, Martin Matuska! On Mon, Jun 06, 2011 at 12:53:11PM +0200 m...@freebsd.org wrote about HEADS UP: ZFS v28 merged to 8-STABLE: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) finally! Thanks! My home server works ok with this update. -- Lystopad Olexandr

Re: HEADS UP: ZFS v28 merged to 8-STABLE

2011-06-06 Thread Zhihao Yuan
Thanks. Everything works fine. 2011/6/6 Lystopad Olexandr l...@laa.zp.ua:  Hello, Martin Matuska! On Mon, Jun 06, 2011 at 12:53:11PM +0200 m...@freebsd.org wrote about HEADS UP: ZFS v28 merged to 8-STABLE: Hi, I have merged ZFS version 28 to 8-STABLE (revision 222741) finally! Thanks