[jford@tusc.net: LUNA: Megaraid problems]

[jford@tusc.net: LUNA: Megaraid problems]

[Matthew Fredrickson]

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From: James Ford <jford@tusc.net>
To: <luna-list@luna.huntsville.al.us>
Subject: LUNA: Megaraid problems
Date: Sun, 4 Mar 2001 21:12:41 -0600 (CST)
Message-ID: <Pine.GSO.4.30.0103042112090.27588-100000@ns2.onramp.tuscaloosa.al.us>

I have a machine with a built-in Adaptec aic7xxx card and a Megaraid PCI
card.  My system (raid 5) boots off the Megaraid.  For this to work I
compiled the Megaraid module into the kernel while the aic7xxx loads as a
module.  dmesg shows the following:

megaraid: v107 (December 22, 1999)
megaraid: found 0x101e:0x9010:idx 0:bus 0:slot 14:func 0
scsi0 : Found a MegaRAID controller at 0x7810, IRQ: 10
megaraid: [UF80:1.61] detected 1 logical drives
scsi0 : AMI MegaRAID UF80 254 commands 16 targs 3 chans 8 luns
scsi : 1 host.
scsi0: scanning channel 1 for devices.
scsi0: scanning channel 2 for devices.
scsi0: scanning channel 3 for devices.
scsi0: scanning virtual channel for logical drives.
  Vendor: MegaRAID  Model: LD0 RAID5 34712R  Rev: UF80
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 3, id 0, lun 0
scsi : detected 1 SCSI generic 1 SCSI disk total.

Works great with kernel 2.2.16.  Worked great up to kernel 2.3.99-test8 or
so.  However under the current 2.4.x kernels (2.4.0, 2.4.1, 2.4.2) I get
the following message:

scsi subsystem driver rev 1.0
megaraid: v107 (Dec 22, 1999)
megaraid: found 0x101e: 0x9010: in 00:0e.0
scsi0: found a megaraid controller at 0x7810, irq 10
megaraid: couldn't register I/O register
requested_modules[scsi_hostadapter] root fs not found
(repeat above 2 more time)
VFS - cannot open boot device 806 or 08:06

which makes sense - can't register device, can open device. The only
difference I've been able to find between the working and non-working
kernels is the "SCSI Subsystem Driver Rev 1.0" line.

So, what direction should I go?  Anyone have any pointers?

Tia.

-- James



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Re: [jford@tusc.net: LUNA: Megaraid problems]

[Matt Domsch]

Consider trying the megaraid driver megaraid.[ch] in 2.4.2-ac11 and above.
It's v1.14g-ac.

Thanks,
Matt

-- 
Matt Domsch
Dell Linux Systems Group
Linux OS Development
www.dell.com/linux

Re: [jford@tusc.net: LUNA: Megaraid problems]

[Alan Cox]

> Works great with kernel 2.2.16.  Worked great up to kernel 2.3.99-test8 or
> so.  However under the current 2.4.x kernels (2.4.0, 2.4.1, 2.4.2) I get
> the following message:

Please test 2.4.2ac12. That has a much cleaned up megaraid.c 1.14g in it. I'd
like feedback before handing it on to Linus. Im using it here on a kernel
build disk with no problems