Hello,

I had exactly the same problem - only with HP ProLiant DL320 G5p. After
installation I had this in /etc/modprobe.conf:

alias eth0 tg3
alias eth1 tg3
alias scsi_hostadapter ahci
alias scsi_hostadapter1 ata_piix

Module ahci is for the SATA raid controller, where both disks are
connected. Module ata_piix is used only for DVD drive (which works only
during the installation, BTW - but that is another issue). In /etc/fstab
I had the filesystems mounted via LABEL=xxx. Unfortunatelly device
mapper did not create the appropriate devices, which resulted in
/dev/sdaX being mounted directly (because the labels matched) and
/dev/sdbX not being used at all.

I played with it a bit, but as I did not find any solution I simply
deleted the RAID volume in the system setup, let both drives to be seen
as "JBOD" and used software raid (/dev/mdX), which works fine (exactly
as it did in RHEL4).


Leos


Allen Hewes wrote:
> Hi Andre,
>
> I would check your initrd for the proper modules (sata_*.ko maybe?). It
> sounds like they aren't getting loaded via the init script in your
> initrd.
>
> Do you have an "alias scsi_hostadapter <something>" line in your
> /etc/modprobe.conf file?
>
> The /dev/mapper/* devices are getting created because "vgscan" and
> "vgchange -ay" isn't finding any volume groups (the SATA disk can't be
> found).
>
> -Allen
>
> -----Original Message-----
> From: rhelv5-list-bounces@(protected)
> [mailto:rhelv5-list-bounces@(protected)
> Sent: Friday, January 18, 2008 06:33
> To: rhelv5-list@(protected)
> Subject: [rhelv5-list] rhels5.1 dev-mapper and raid1
>
> Hi,
>
> On a HP Proliant dl-140-g3 with Adaptec SATA controller I'm trying to
> install RHELS5.1 . Both SATA disks are configured in a RAID 1 set (via
> the SATA controller internal setup utility), properly recognized as 1
> device during RH installation and mapped in /dev/mapper . Creating a
> /boot partition and a LVM2 VG group on the dev-mapper device. All going
> well, but when rebooting the system after installation, it does not
> setup de dev-mapper device. RH sees both disks as separate disks
> (/dev/sda and /dev/sdb), not as during installation as a device-mapper
> device. Any ideas how to correct this?
>
> Tia,
> Andre
>
> ---
> Wageningen University
> The Netherlands
>
>
>
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