Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[Andrew Morton]

Begin forwarded message:

Date: Tue, 13 Feb 2007 04:38:49 -0800
From: bugme-daemon@bugzilla.kernel.org
To: bugme-new@lists.osdl.org
Subject: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4


http://bugzilla.kernel.org/show_bug.cgi?id=7999

           Summary: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since
                    release 2.00.4
    Kernel Version: 2.6.20
            Status: NEW
          Severity: blocking
             Owner: scsi_drivers-other@kernel-bugs.osdl.org
         Submitter: rico@ricospirit.net


Most recent kernel where this bug did *NOT* occur:2.6.14 ?
Distribution:Debian Sarge
Hardware Environment: Asus A7V266 M/B, Adaptec AHA-2940UW, LSI MegaRAID 511 i4
Software Environment:
Problem Description: My MegaRAID i4 adapter, witch works well on linux 2.6.11.6
kernel, doesn't work anymore with newer kernels whereas I use the same config
file (updated by 'make oldconfig') I compared megaraid.c from 2.6.11 and 2.6.20
and I noticed megaraid version goes from 2.00.3 to 2.00.4, so I guess the
problem is here ?

Steps to reproduce: simply compile a kernel >= 2.6.15 with megaraid legacy support !

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Re: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[James Bottomley]

On Tue, 2007-02-13 at 09:29 -0800, Andrew Morton wrote:
> Subject: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

This is by design ... the i4 is now supported by the new megaraid_mbox
driver.  Please retry with that driver.

James

Re: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[Eric Belhomme]

James Bottomley a écrit :

> This is by design ... the i4 is now supported by the new megaraid_mbox
> driver.  Please retry with that driver.
> 
Damn ! I spent many hours trying many kernel version, but I never 
imagined the card support would be translated on megaraid NG !!!

By the way, I added megaraid NG modules on my 2.6.20 and my i4 card is 
now recognized... But I can't figure how it works :

hole:/home/rico# lsmod|grep megaraid
megaraid_mbox          35368  0
megaraid_mm            12068  1 megaraid_mbox
megaraid               41704  1
scsi_mod              151980  7 
megaraid_mbox,sr_mod,sd_mod,megaraid,sg,aic7xxx,scsi_transport_spi
ho

So if I understand well, the module actively used with the LSI card is 
megaraid, the legacy one ! but the mbox and mm are loaded and seems to 
be necessary for the legacy driver ?

Never mind, sorry for the inconvenience... and the noise on the lkdml !

Regards,

-- 
Rico
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Re: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[James Bottomley]

On Tue, 2007-02-13 at 22:35 +0100, Eric Belhomme wrote:
> hole:/home/rico# lsmod|grep megaraid
> megaraid_mbox          35368  0
> megaraid_mm            12068  1 megaraid_mbox
> megaraid               41704  1
> scsi_mod              151980  7 
> megaraid_mbox,sr_mod,sd_mod,megaraid,sg,aic7xxx,scsi_transport_spi
> ho
> 
> So if I understand well, the module actively used with the LSI card is 
> megaraid, the legacy one ! but the mbox and mm are loaded and seems to 
> be necessary for the legacy driver ?

Actually, it shouldn't be.  megaraid_mbox depends on megaraid_mm as your
lsmod shows, which is correct.  However, nothing's depending on legacy
megaraid ... I'm not sure why it's showing as loaded and in use.

James

Re: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[Eric Belhomme]

James Bottomley a écrit :

>> So if I understand well, the module actively used with the LSI card is 
>> megaraid, the legacy one ! but the mbox and mm are loaded and seems to 
>> be necessary for the legacy driver ?
> 
> Actually, it shouldn't be.  megaraid_mbox depends on megaraid_mm as your
> lsmod shows, which is correct.  However, nothing's depending on legacy
> megaraid ... I'm not sure why it's showing as loaded and in use.
> 
but it is ! moreover I have a /proc/megaraid/hba1/ directory structure 
fully filled with my RAID card, drives, and RAID volumes informations, 
and I don't hav any entry in sysfs directory tree (witch is the right 
place for megaraid NG module)

I'd like to understand _why_ this module supposed to be independant from 
the "new generation" megaraid module needs megaraid NG to be compiled to 
work correctly ?

I looked over the sources but I didn't found any link between the legacy 
driver and the newgen one... quite strange !

Regards,

-- 
Rico

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RE: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

[Patro, Sumant]

megaraid_mbox and megaraid_mm  are the modules for "new generation".
There is no dependency of these modules to megaraid legacy.
Could you please send me the lspci output from the system under test?

--Sumant

-----Original Message-----
From: linux-scsi-owner@vger.kernel.org [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Eric Belhomme
Sent: Wednesday, February 14, 2007 1:55 AM
To: James Bottomley
Cc: Andrew Morton; linux-scsi@vger.kernel.org; bugme-daemon@kernel-bugs.osdl.org
Subject: Re: Fw: [Bugme-new] [Bug 7999] New: MegaRAID Legacy doesn't work with LSI MegaRAID i4 since release 2.00.4

James Bottomley a écrit :

>> So if I understand well, the module actively used with the LSI card 
>> is megaraid, the legacy one ! but the mbox and mm are loaded and 
>> seems to be necessary for the legacy driver ?
> 
> Actually, it shouldn't be.  megaraid_mbox depends on megaraid_mm as 
> your lsmod shows, which is correct.  However, nothing's depending on 
> legacy megaraid ... I'm not sure why it's showing as loaded and in use.
> 
but it is ! moreover I have a /proc/megaraid/hba1/ directory structure fully filled with my RAID card, drives, and RAID volumes informations, and I don't hav any entry in sysfs directory tree (witch is the right place for megaraid NG module)

I'd like to understand _why_ this module supposed to be independant from the "new generation" megaraid module needs megaraid NG to be compiled to work correctly ?

I looked over the sources but I didn't found any link between the legacy driver and the newgen one... quite strange !

Regards,

--
Rico

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