[4485] in linux-scsi channel archive
problems with kernel upgrade (2.0.35)
daemon@ATHENA.MIT.EDU (Carlos Vicente)
Fri Jul 31 10:46:22 1998
Date: Fri, 31 Jul 1998 10:22:41 -0500
From: Carlos Vicente <cvicente@ns.intec.edu.do>
To: linux-scsi@vger.rutgers.edu
CC: jad@network-services.uoregon.edu
Hello all.
I have RedHat 5.0 installed (kernel 2.0.32) and I just compiled kernel
version 2.0.35. I have two adaptec scsi host adapters. One is AIC7880
(with an internal 4.3 GB seagate) and the other one is a AHA2940 (with
two external 4.3 GB Fujitsus). I configured the new kernel to support
both hosts internally (not as modules)
My problem is (among other things) that the new kernel seems to detect
the devices in a different order and assigns different minor numbers to
them.
For example, the Seagate used to be sda (this one has all the
filesystems, including /) and now it's sdc (just after the fujitsus get
sda and sdb each). So, when I try to boot with the new kernel, it
cannot mount the root filesystem, because sda is now empty.
I have configured Lilo so I can boot either of the kernels,
/etc/lilo.conf looks like this:
*********************************************************************
map=/boot/map
install=/boot/boot.b
root=/dev/sda5
prompt
read-only
timeout=50
image=/boot/vmlinuz-2.0.32
label=linux
initrd=/boot/initrd-2.0.32.img
image=/boot/zImage-2.0.35
label=linux-2.0.35
***************************************************************************
My /etc/fstab looks like:
/dev/sda5 / ext2 defaults
1 1
/dev/sda7 /usr ext2 defaults
1 2
/dev/sda6 /usr/local ext2 defaults
1 2
/dev/sda8 /var ext2 defaults
1 2
/dev/sda9 swap swap defaults
0 0
/dev/fd0 /mnt/floppy ext2 noauto
0 0
/dev/cdrom /mnt/cdrom iso9660 noauto,ro
0 0
none /proc proc defaults
0 0
**********************************************************************
I'm afraid to change the root=/dev/sda5 line in lilo.conf, because I
would also have to change my /etc/fstab to point to /dev/sdc too,
right? So, if that didn't work, I wouldn't be able to recover the
system. Is there any other way?
My goal is to implement RAID 0, so I can configure both fujitsus to be
seen as one device (md0) and mount it as /usr.
I was reading in SCSI-HOWTO that there might be a program that allows
one to specify the order for the devices to be detected. Has anyone
used it?
Please, lend me a hand with this.
Thanks in advance.
--
Carlos Vicente
cvicente@ns.intec.edu.do
RedINTEC
Instituto Tecnologico de Santo Domingo
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