6.1RC-2 ciss Driver hangs on Rebuild for Internal Drives with external MSA20 attached

[Paul Saab]

You are certain the firwmare on the MSA20 is 1.48?

Karl Pielorz wrote:
>
> Hi All,
>
> We've recently added an MSA20 external SATA enclosure to our HP 
> Proliant DL380 server.
>
> While testing, we found the following problem:
>
> If you fail an internal RAID array, when the system starts rebuilding 
> it - any disk access to ciss0 will 'hang' - killing the server.
>
> The rebuild does complete OK (guess that's the controller continuing 
> to do it in-background) - but the machine never recovers from the hang.
>
> If you remove the MSA20 - internal drives can be failed, and will 
> rebuild fine. Additionally - if you fail a drive in the MSA20 when 
> it's attached - it will fail, and rebuild perfectly Ok (no hangs).
>
> I've also noticed the following appears logged, when the machine is 
> going to hang:
>
> "
> ciss0: ** Hot-plug drive inserted: SCSI port 2 ID 5
> ciss0: ** State change, logical drive 2
>         [server hangs at this point - after ~30 sec you get...]
> ciss0: error sending 195 LUN command (35)   <---- Presumably not good :)
> ciss0: Warning, cannot get physical lun list
> ciss0: logical drive 2 (da2) changed status interim recovery->ready 
> for recovery, spare status 0x0
> "
>
> Any suggestions? - We've checked the firmware on both the server, and 
> the MSA20 is the latest. The cable is the HP supplied one.
>
> Thanks,
>
> -Karl
>
> You can find a full verbose boot for this machine, admittedly under 
> 6.1RC1 (which had the same problem) at: 
> http://www.tdx.com/verbose_6.1rc1.txt
>
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