Basically i did not pursue which driver was conflicting with the megaraid
driver (i should do), because of my other works. 
Once i get a free time i promise will do it.  If anyone discovers this
meanwhile please let me know, i could see what workaround can be done.

Thanks & Cheers,
Venkatesh



> -----Original Message-----
> From: Heitzso [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, January 25, 2001 11:43 AM
> To:   'Margulies, Adam'; 'Venkatesh Ramamurthy'
> Subject:      RE: megaraid 1.14e still broken
> 
> Venkatesh,
>  
> If it's useful I could recompile a kernel with usb enabled
> and try rebooting from there, with 1.14e in place (Adam,
> my problem was out of date firmware on PERC/AMI
> controller, I updated firmware and 1.14e megaraid
> working now).
>  
> Problem with usb is compounded by different usb 
> controllers and I don't know what happens if usb
> controller not on the box, etc. so couldn't gurantee
> that my test would be complete.
>  
> Heitzso
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> 
>       -----Original Message-----
>       From: Margulies, Adam [mailto:[EMAIL PROTECTED]]
>       Sent: Thursday, January 25, 2001 11:34 AM
>       To: 'Heitzso'; 'Venkatesh Ramamurthy'
>       Cc: '[EMAIL PROTECTED]'
>       Subject: RE: megaraid 1.14e still broken
>       
>       
> 
>       I've noticed that there is a module that appears to conflict with
> the megaraid driver. 
>       (I know this seems strange). 
> 
>       I was having trouble getting the megaraid driver to work so... 
>       I winnowed down my kernel to an absolute bare minimum, added the
> megaraid driver, rebooted. 
> 
>       It worked. 
> 
>       So, I then basically did a binary search of the kernel features I'd
> disabled. 
>       This is very time consuming, I know. I rebuilt the kernel several
> times, adding 
>       a few features each time. I never figured out exactly which module
> was conflicting, if any, 
>       (because after rebuilding the kernel 10 times, it gets really,
> really old). 
>       But I believe it was the USB filesystem module, which I never
> reenabled, because 
>       I don't expect to ever use it. 
> 
> 
>       adam 
> 
> 
>       -----Original Message----- 
>       From: Heitzso [ <mailto:[EMAIL PROTECTED]>] 
>       Sent: Thursday, January 25, 2001 9:30 AM 
>       To: 'Venkatesh Ramamurthy' 
>       Cc: '[EMAIL PROTECTED]' 
>       Subject: megaraid 1.14e still broken 
> 
> 
>       Venkatesh, 
> 
>       megaraid version 1.14e breaks 
>       I rebooted to 2.4.0 and it's older 
>       megaraid v107 works fine 
> 
>       the raid controller was oem'ed 
>       Dell-AMI so there's not an obvious 
>       upgrade I can burn into it from AMI 
>       page because the product isn't listed 
>       there 
> 
>       when the box boots and before lilo 
>       takes over the message is: 
>        "PowerEdge Expandable RAID Controller BIOS 1.25" 
>       with an option to go into a configuration utility 
>       program 
> 
>       the box is a Dell PowerEdge server 2300/450, 
>       2 CPU, 1G RAM 
> 
>       Venkatesh, I appreciate your adding debugging 
>       info to the driver to capture this, I didn't 
>       write the full register dump 
>       but did capture the first few debugging lines. 
>       megaraid: v1.14e (Release Date: Jan 23, 2001, 17:55) 
>       unable to handle kernel NULL pointer dereference 
>         at virtual addrss 000002cc 
>       printing eip: c01e10bc 
>       *pde=00000000 
>       Ooops: 0000 
>       (followed by full register dump that I didn't copy) 
> 
>       Let me know where to go next. 
> 
>       Heitzso 
>       [EMAIL PROTECTED] 
> 
> 
> 
>       -----Original Message----- 
>       From: Venkatesh Ramamurthy [ <mailto:[EMAIL PROTECTED]>] 
>       Sent: Wednesday, January 24, 2001 2:12 PM 
>       To: 'Heitzso' 
>       Subject: RE: fyi megaraid problems 
> 
> 
>       Try this 1.14e version of the driver and i would be glad if you
> could let me 
>       know the result. 
>       Thanks 
>       Venkatesh 
> 
>        <<m114e.tar.gz>> 
> 
> 
>       > -----Original Message----- 
>       > From: Heitzso [SMTP:[EMAIL PROTECTED]] 
>       > Sent: Wednesday, January 24, 2001 1:09 PM 
>       > To:   'Venkatesh Ramamurthy' 
>       > Subject:      RE: fyi megaraid problems 
>       > 
>       > <flagging strangeness that latest greatest 
>       > kernel, 2.4.1 pre 10, shipping with older 
>       > megaraid module, but one that works on our 
>       > box!> 
>       > 
>       > kernel 2.2.13 ships with v1.04, aug '99, WORKS 
>       > kernel 2.2.16 didn't ftp down kernel and check 
>       > kernel 2.2.18 ships with v1.11, BROKEN 
>       > kernel 2.4.1pre10 ships with v1.07b, WORKS 
>       > 
>       > 
>       > 
>       > -----Original Message----- 
>       > From: Venkatesh Ramamurthy [ <mailto:[EMAIL PROTECTED]>] 
>       > Sent: Wednesday, January 24, 2001 12:07 PM 
>       > To: 'Heitzso' 
>       > Subject: RE: fyi megaraid problems 
>       > 
>       > 
>       > Can i have the driver version number so that i can see whether we
> have 
>       > already fixed that problem? 
>       > Also you can send me the dmesg output from working system (
> 2.2.13, 
>       > 2.4.1pre10). This could gave me some additional data points. 
>       > Thanks 
>       > Venkatesh 
>       > 
>       > > -----Original Message----- 
>       > > From:       Heitzso [SMTP:[EMAIL PROTECTED]] 
>       > > Sent:       Wednesday, January 24, 2001 12:07 PM 
>       > > To: 'Venkatesh Ramamurthy' 
>       > > Subject:    RE: fyi megaraid problems 
>       > > 
>       > > can't ... 
>       > > 
>       > > because the hard drive is never accessed 
>       > > so the boot messages are never written out 
>       > > 
>       > > message was an oops, quick recap 
>       > >  2.2.13 works (RH6.1 env) 
>       > >  2.2.16 breaks (RH7 env) 
>       > >  2.2.18 breaks (RH7 env) 
>       > >  2.4.1pre10 works (RH7 env) 
>       > > 
>       > > I don't know if the bug's in megaraid or 
>       > > in the RH7 compiler environment, hence my 
>       > > stressing that component 
>       > > 
>       > > Heitzso 
>       > > 
>       > > -----Original Message----- 
>       > > From: Venkatesh Ramamurthy [ <mailto:[EMAIL PROTECTED]>] 
>       > > Sent: Wednesday, January 24, 2001 11:59 AM 
>       > > To: '[EMAIL PROTECTED]' 
>       > > Subject: RE: fyi megaraid problems 
>       > > 
>       > > 
>       > >     Hi, 
>       > >     Can you send me the 'dmesg' output of the failing
> combination. I 
>       > > would look into the problem ASAP once i get it. 
>       > >     Thanks 
>       > >     Venkatesh 
>       > > 
>       > > > -----Original Message----- 
>       > > > From: Heitzso [ <mailto:[EMAIL PROTECTED]>] 
>       > > > Sent: Wednesday, January 24, 2001 11:51 AM 
>       > > > To: '[EMAIL PROTECTED]' 
>       > > > Subject: fyi megaraid problems 
>       > > > 
>       > > > 
>       > > > don't know if this has been covered/studied 
>       > > > 
>       > > > datapoints I've run across re the megaraid 
>       > > > (scsi raid driver, american megatrends) 
>       > > > 
>       > > > box: Dell PowerEdge 2300, 2 cpus, 1G RAM 
>       > > > 
>       > > > hard drive setup as single drive via raid 
>       > > > controller 
>       > > > 
>       > > > RH6.1, compiled 2.2.13, megaraid works! 
>       > > > 
>       > > > RH7.0 install/upgrade breaks on megaraid 
>       > > > then, after forcing RH7.0 upgrade by hand 
>       > > >  (completely snuffed up with all updates as of jan 23 am ...) 
>       > > > RH7.0 kernel (out of the rpm box 686 smp) breaks on megaraid 
>       > > > RH7.0 2.2.16 kernel source from rpm 
>       > > >  compiled using 2.2.13 .config file 
>       > > >  and make oldconfig generates kernel that 
>       > > >  breaks on megaraid (used RH provided 
>       > > >  scripts to compile with kgcc) 
>       > > > 2.2.18 kernel (kernel.org) compiled with gcc on RH7.0 
>       > > >  breaks on megaraid during boot 
>       > > > 
>       > > > BUT! 2.4.1pre10 (kernel.org), compiled with gcc on RH7.0 
>       > > >  the megaraid driver works again! 
>       > > > 
>       > > > I was surprised that even 2.2.18 breaks 
>       > > > then 2.4.1pre10 works, given RH's alliance 
>       > > > with Dell. 
>       > > > 
>       > > > I compiled a 2.4.0 and set it up in 
>       > > > lilo.conf but haven't tried booting to it. 
>       > > > 
>       > > > If it's useful to anyone, now that I have 
>       > > > a good booting kernel I could recompile the 
>       > > > old 2.2.13 setup and see whether the problem 
>       > > > is due to a bad compiler env in RH7.0 or 
>       > > > due to a bad megaraid module (i.e. if kernel 
>       > > > that works fine now compiled under 6.1 
>       > > > breaks when recompiled under 7.0 then bug 
>       > > > is in the RH7.0 compiler env; else bug is 
>       > > > in megaraid shipped with 2.2.16, 2.2.18) 
>       > > > 
>       > > > Let me know if someone needs a datapoint. 
>       > > > 
>       > > > Heitzso 
>       > > > [EMAIL PROTECTED] 
>       > > > - 
>       > > > To unsubscribe from this list: send the line "unsubscribe 
>       > linux-kernel" 
>       > > in 
>       > > > the body of a message to [EMAIL PROTECTED] 
>       > > > Please read the FAQ at <http://www.tux.org/lkml/> 
>       - 
>       To unsubscribe from this list: send the line "unsubscribe
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