FreeBSD Crash without Errors, Warnings, or Panics

[Alex Zbyslaw]

Paul Saab wrote:

> The amr driver was not MPSAFE in 5.4 (i think) so you would not have 
> run into these problems.  You should be able to just take the driver 
> from RELENG_6 and use it on a released branch.  If it doesn't compile, 
> let me know and I'll generate you a tarball or diff that will work.  
> We had major issues with amr at work until Scott Long and I (mostly 
> Scott) helped iron out the stability issues with amr.  You should 
> either run RELENG_6 or take the driver from RELENG_6 and use that.  
> You'll get the added benefit of being able to use the Linux management 
> tools (megarc) to see the status of your raid.
>
Presumably this change will make it into 6.1 and is already in the 
betas/RCs?

I'm confused by the megarc comment.  There is a port of megarc in the 
ports which appears to work under 5.4 already, though I've only used it 
for simple reporting.  I've seen references to Scott and your work on 
improving the driver which uses the same phrase "Linux management tools" 
but have no real idea what that refers to.  Are there tools beyond 
megarc which now work?  If so, any pointers much appreciated.

--Alex