PERC5 (LSI MegaSAS) Patrol Read crashes

[Simon]

Hello,

I'm just wondering, was this ever resolved? I was about to start using
new 2950 with Perc5 in it, but now I'm afraid to as I cannot afford
downtime. Why this is still a linux hack is beyond me. The way Dell
is doing, they ought to have a port specifically for FreeBSD

If I disable PR altogether (not sure if this is possible, yet), although I
don't see why it wouldn't be, would the mentioned problem go away?

Thank you,
Simon


On Mon, 01 Oct 2007 17:26:29 -0400, Sean McAfee wrote:

>John Baldwin wrote:
>> On Saturday 29 September 2007 09:18:17 pm Benjie Chen wrote:
>>
>> Hmm, I haven't tried with megacli, but an internal tool at work is able to 
>> start manual patrol reads w/o causing a crash, and I've also seen production 
>> boxes running automatic patrol reads w/o causing crashes.  Do you have to 
>> have a certain load before it will crash?

>The crashes that we've seen in production have occurred while patrol 
>reads kick off under moderate-high load, but in testing, an automatic 
>read will complete fine.  Even with maxed-out I/O*, we haven't been able 
>to come up with reliable testing scenario to trigger crashes on 
>automatic patrol reads.


>(*My base testing scenario involved running a pretty heavy stress [as in 
>the program available in ports], while repeatedly copying ports & src 
>from an NFS mount to another local mountpoint and SCPing a large file in 
>a loop from another machine.)


>Sean McAfee
>Collaborative Fusion, Inc.
>  smcafee at collaborativefusion.com
>  412-422-3463 x 4025

>1710 Murray Avenue, Suite 320
>Pittsburgh, PA 15217

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