New 'amr' driver and linux MegaMGR

[Christian Brueffer]

On Thu, Mar 02, 2006 at 07:05:07AM -0800, Doug Ambrisko wrote:
> Danny Braniss writes:
> | > Cristiano Deana writes:
> | > | 2006/3/1, Paul Saab <ps at freebsd.org>:
> | > | > works fine
> | > | 
> | > | I got:
> | > |  Failed to open driver node /dev/megadev0
> | > 
> | > Make sure you have amr_linux.  kldload amr_linux.ko.  Then you should
> | > get a /dev/megadev0.  It also works in a static kernel.  You might
> | > want to do an ls -l of /dev/megadev0.  This is only available
> | > in FreeBSD 6.1 and -current it is not in FreeBSD 6.0.  The changes
> | > will drop into FreeBSD 6.0 though.
> | 
> | i'm getting:
> | 
> | Copyright (c) 1992-2006 The FreeBSD Project.
> | Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
> |         The Regents of the University of California. All rights reserved.
> | FreeBSD 6.1-PRERELEASE #3: Mon Feb 27 10:23:29 IST 2006
> | ...
> | module_register_init: MOD_LOAD (amr_linux, 0xffffffff805f1b00, 0) error 6
> | ad4: 286168MB <WDC WD3000JD-00KLB0 08.05J08> at ata2-master SATA150
> | ad6: 286168MB <WDC WD3000JD-00KLB0 08.05J08> at ata3-master SATA150
> | ar0: 572072MB <LSILogic v3 MegaRAID RAID0 (stripe 16 KB)> status: READY
> | ar0: disk0 READY using ad4 at ata2-master
> | ar0: disk1 READY using ad6 at ata3-master
> | 
> | and no /dev/megadev0
> | 
> | maybe because:
> | atapci1 at pci0:31:2:      class=0x01048f card=0x34518086 chip=0x25b08086 rev=0x02 hdr=0x00
> |     vendor   = 'Intel Corporation'
> |     device   = '6300ESB Serial ATA Controller (RAID mode)'
> |     class    = mass storage
> |     subclass = RAID
> 
> You don't have an LSI RAID controller.  Those are the built in Intel
> SATA ports in RAID mode which is software RAID.  It is being detected
> as ata disks and using ata-raid.  So you can't use the LSI RAID tools.
> If it was detected via the amr(4) driver then you could use the LSI RAID
> tools.
> 
> Now it is using the LSI RAID meta-data.  "atacontrol" will manage this
> assuming Soren has the meta-data write support for their format.
> 

For the LSI metadata formats, there is only read support.  See ataraid(4)
for details.

- Christian

-- 
Christian Brueffer	chris at unixpages.org	brueffer at FreeBSD.org
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