MegaRaid SAS constant RESETS

[Chmouel Boudjnah]

Hi,

I have as well seen the exact same problem with this megaraid_sas
controller, the only way was to patch the kernel like mentioned
earlier in this thread, here is the output of omreport :

List of Array/Hard Disks on Controller PERC 5/i Integrated (Embedded)

Controller PERC 5/i Integrated (Embedded)
ID                        : 0:0:0
Status                    : Ok
Name                      : Array Disk 0:0:0
State                     : Online
Failure Predicted         : No
Progress                  : Not Applicable
Type                      : SAS
Capacity                  : 67.75 GB (72746008576 bytes)
Used RAID Disk Space      : 67.75 GB (72746008576 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : MAY2073RC
Revision                  : D108
Serial No.                : B363P6800U0N
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : 07
Manufacture Week          : 31
Manufacture Year          : 2006
SAS Address               : 500000E0127FAD82

ID                        : 0:0:1
Status                    : Ok
Name                      : Array Disk 0:0:1
State                     : Online
Failure Predicted         : No
Progress                  : Not Applicable
Type                      : SAS
Capacity                  : 67.75 GB (72746008576 bytes)
Used RAID Disk Space      : 67.75 GB (72746008576 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : MAY2073RC
Revision                  : D108
Serial No.                : B363P6800U0M
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : 07
Manufacture Week          : 31
Manufacture Year          : 2006
SAS Address               : 500000E0127FAD72

Cheers, Chmouel

<Patrick_Boyd at dell.com> writes:

> Can you tell me what kind of drives you have in the system (output from
> omreport storage adisk controller=x would be ideal)? 
>
> -----Original Message-----
> From: David L. Dewey [mailto:ddewey at cyberthugs.com] 
> Sent: Tuesday, October 17, 2006 3:37 PM
> To: Boyd, Patrick
> Cc: BSmith at lyrix.com; linux-poweredge-bounces-Lists;
> linux-poweredge-Lists
> Subject: Re: MegaRaid SAS constant RESETS
>
> Quoting Patrick_Boyd at Dell.com (Patrick_Boyd at Dell.com):
>
>> That's my guess as well. The SAS subsystem on the controller will 
>> reset if I/O is going to a target that is no longer available. At this
>
>> point the RAID subsystem will assume all data reported by the SAS 
>> subsystem is stale and tell it to reset/reenumerate the bus.
>> 
>> Do you have OMSA installed? The alerts from OMSA would give us an idea
>
>> if anything is wrong on the SAS subsystem.
>
>
> I do have OMSA installed, no alerts from there even as the RESETS
> persist.
> It's gotta be a driver/firmware issue.
>
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-- 
Chmouel Boudjnah - Squiz.net - http://www.squiz.net/