[OmniOS-discuss] Hang on Dell R710 with r151004?

[steve at linuxsuite.org]

>   Hi,
>
>            I have 2 Dell R710's as a ZFS storage that are running r151004.
> About every 2 or 3 weeks
> they will hang with all services unresponsive and must be power cycled. I
> do not

   Hmm... read something about cstates on dell r710's....


root at blahblah:~# kstat |grep current_cstate; kstat |grep
supported_max_cstates
        current_cstate                  3
        current_cstate                  0
        current_cstate                  3
        current_cstate                  3
        current_cstate                  3
        current_cstate                  3
        current_cstate                  3
        current_cstate                  3
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2
        supported_max_cstates           2

         Is this an issue? Do cstates need to be disabled in BIOS??

        thanx - steve

> suspect hardware as it happens on both machines and hardware worked fine
> with other OS's.
>
>          Both systems use the mpt_sas driver. I noticed that there have
> been
> many updates to mpt_sas since r151004. Not knowing the specifics of the
> driver issue, is it possible that there is a bug that is causing system
> hangs?
>
>         Or could this be some kind of resource starvation?
>
>        I disabled ata driver as it was logging some errors around "hang
> time" and is not required after install, but now system hangs
> without any logged errors.
>
>         Ideas?
>
>         Will upgrading to r151006 or r151008 fix this?
>
>         thanx - steve
>
>
>
>
>