epic UFS crash

[Jeremy Chadwick]

On Tue, Dec 13, 2011 at 05:54:26PM +0400, siur wrote:
> > Just curious, what type of RAID controller was this?
> 
> Oh, I don't remember. Some built-in intel controller.

Intel MatrixRAID hasn't worked well on FreeBSD for quite some time.
See Operating System Support, note the bugs:
http://en.wikipedia.org/wiki/Intel_Rapid_Storage_Technology

Be aware there is, in RELENG_8 and newer, better support for this using
the graid(8) utility.  I have been meaning to test this for months now,
but haven't had the time.

You'd probably be better off scrapping use of the built-in Intel stuff
and going with gmirror(8).

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |