linux-kernel - Re: megaraid_sas waiting for command and then offline

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Message-ID: <44FF3325.50805@imvu.com>
Date:	Wed, 06 Sep 2006 13:44:21 -0700
From:	"Brett G. Durrett" <brett@...u.com>
To:	"Patro, Sumant" <Sumant.Patro@...l.com>
CC:	Dave Lloyd <dlloyd@...gy.com>,
	"Bagalkote, Sreenivas" <Sreenivas.Bagalkote@...enio.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Berkley Shands <bshands@...gy.com>,
	"Kolli, Neela" <Neela.Kolli@...enio.com>,
	"Yang, Bo" <Bo.Yang@...enio.com>
Subject: Re: megaraid_sas waiting for command and then offline


Sumant,

Not sure if I am missing something - I appear to be running the latest 
FW available:

                Versions
                ================
Product Name    : PERC 5/i Integrated
Serial No       : 12345
FW Package Build: 5.0.1-0030
FW Version      : 1.00.01-0088
BIOS Version    : MT23
Ctrl-R Version  :1.02-007



Patro, Sumant wrote:

>Hello Brett,
>
>	A DMA related bug was fixed in FW ver *.0095 that was causing
>the FW to stop responding. 
>	
>	Please upgrade the FW version to >= *.0095 and let me know if
>you still see the issue.
> 
>Regards,
>
>Sumant
>
>
>-----Original Message-----
>From: Brett G. Durrett [mailto:brett@...u.com] 
>Sent: Wednesday, September 06, 2006 9:04 AM
>To: Dave Lloyd
>Cc: Patro, Sumant; Bagalkote, Sreenivas; lkml; Berkley Shands
>Subject: Re: megaraid_sas waiting for command and then offline
>
>
>The machines are Dell 2900s, so the mobo is custom.  From a Dell SE, 
>"Dell uses a custom mobo that is Dell branded with the Intel chipset 
>Greencreek.".
>
>B-
>
>
>
>
>Dave Lloyd wrote:
>
>  
>
>>Brett G. Durrett wrote:
>>    
>>
>>>I have the same or a similar issue running 2.6.17 SMP x86_64 - the
>>>megaraid_sas driver hangs waiting for commands and then the
>>>      
>>>
>filesystem
>  
>
>>>unmounts, leaving the machine in an unusable state until there is a 
>>>      
>>>
>>hard
>>    
>>
>>>reboot (the machine is responsive but any access, shell or 
>>>      
>>>
>>otherwise, is
>>    
>>
>>>impossible without the filesystem).  While I do not have much
>>>      
>>>
>debugging
>  
>
>>>information available, this happens to me about once every 6-7 days
>>>      
>>>
>in
>  
>
>>>my pool of seven machines, so I can probably get debugging info.
>>>      
>>>
>Since
>  
>
>>>the disk is offline and I can't get remote console, I don't have any
>>>details except something similar to Dave Lloyd's post, below.
>>>
>>>The only thing that the machines with these failures seem to have in
>>>common is the fact that they are almost exclusively writes - they
>>>      
>>>
>are
>  
>
>>>slave database machines with large memory and pretty much just
>>>replicate.  The read/write machines seem to have less failures.
>>>
>>>I am happy to help provide debugging information in any reasonable
>>>      
>>>
>way.
>  
>
>>>In the mean time, if there are any known suggestions or workarounds
>>>      
>>>
>for
>  
>
>>>the problem, I would be grateful for the guidance.
>>>
>>>Here are what details on the controller.  If you want additional
>>>      
>>>
>info,
>  
>
>>>let me know exactly what you need and I will do what I can to get it
>>>      
>>>
>to
>  
>
>>>you.:
>>>
>>>Product Name    : PERC 5/i Integrated
>>>Serial No       : 12345
>>>FW Package Build: 5.0.1-0030
>>>FW Version      : 1.00.01-0088
>>>BIOS Version    : MT23
>>>Ctrl-R Version  :1.02-007
>>>
>>>B-
>>>      
>>>
>>Which motherboard are you using?  We believe that this may be a
>>motherboard specific issue.  It appears to happen on a SuperMicro
>>motherboard but not a Tyan motherboard.
>>
>>    
>>
>-
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