[rescue] FreeBSD and ZFS, was Re: 3ware raid

Phil Stracchino alaric at metrocast.net
Thu Aug 4 11:39:59 CDT 2011

On 08/04/11 12:08, N. Miller wrote:
> On Jul 27, 2011, at 4:11 PM, Shawn Wallbridge wrote:
>> From what I remember about a talk by Bryan Cantrill a while back,
>> Solaris ZFS wants direct access to the disk. They do some funky stuff,
>> because after testing they realized that you can't trust anything.
>> They had controllers, cables, and even disk 'lie' about things, or
>> introduce errors. So when they developed the x45(0,4)0's, they went
>> with controllers that they could directly access the drives, in some
>> low level way.
>> But again, this was all a long time ago, so I could have bit rot in my
>> grey matter ;)
> That's exactly right, Shawn.  Our biggest issues at work with the x4100/4140's
> is just this: the LSI & Adaptec RAID don't present real JBOD to ZFS.

I have not had this problem with my LSI 3080X controllers.  They Just Work.

  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
  Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
                 It's not the years, it's the mileage.

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