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RE: Change the order of scsi Controller

Hi Steffen,

as Etch uses udev for managing hardware, why not use symbolic names for your
partitions (based on the file system label)? This works even in initrd, if
you use initramfstools, it does not work with yaird!

On my Alphastation I have the following kernel bootlines in aboot.conf:

thetaphi@alpha:/boot$ cat etc/aboot.conf
# aboot default configurations
0:2/vmlinuz ro initrd=/initrd.img root=LABEL=root
1:2/vmlinuz.old ro initrd=/initrd.img.old root=LABEL=root

And the following fstab:
thetaphi@alpha:~$ cat /etc/fstab
# /etc/fstab: static file system information.
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
LABEL=root      /               ext3    defaults,errors=remount-ro 0       0
LABEL=boot      /boot           ext2    defaults,noatime,nodiratime   0    0
LABEL=var       /var            ext3    defaults        0       0
LABEL=home      /home           ext3    defaults        0   0
LABEL=swap      none            swap    sw              0       0

The labels were assigned to all partitions e2label and for swap by mkswap.
That was it. Works stable and I can change my hardware configuration
whatever I like (because sometimes the order changes with every reboot when
parallel searching for new devices is enabled).

I use this style for all my machines (not only the alpha one).

Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
eMail: uwe@thetaphi.de

> -----Original Message-----
> From: Steffen.Pelzetter@nexans.com [mailto:Steffen.Pelzetter@nexans.com]
> Sent: Friday, January 18, 2008 9:13 AM
> To: debian-alpha@lists.debian.org
> Subject: Change the order of scsi Controller
> Hello,
> I have 2 AlphaServer 4100 (Rawhide) running Debian/Etch and a Digital Raid
> Array (RA3000) connected.
> I have installed debian on the Server with the RA3000 switched off running
> the generic alphaserver kernel.
> Now everything is installed on /dev/sda:
> /dev/sda3       /                       ext3 defaults,errors=remount-ro 0
>     1
> /dev/sda2       /boot          ext2     defaults        0       2
> /dev/sda4       none          swap      sw              0       0
> /dev/sda is the first scsi- disk plugged into the local servers SCSI-
> Container.
> Now, if I switch on the raid array and boot the server, the module of the
> scsi controller (QLogic qla1280)
> has the raid array connected seems to be loaded before the module of the
> controller (sym53c8xx) for local disks.
> Thats why my disks order is changed completely.
> The first disk in the raid controller becomes /dev/sda and the disks on
> the local controller will be added
> after the last disk in the raid array.
> My question is, if the reason for that is really the module- load order
> how can I change it easily?
> The scsi- modules are loaded via initrd.
> I already read this article:
> http://ubuntuforums.org/showthread.php?t=219600
> but my
> /etc/initramfs-tools/module
> file is empty, and I don't know what modules are loaded with initrd.
> Any suggestions?
> PS:
> Compiling a new kernel is no optiion for now.
> --
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