Hi LVM experts,
I need your help again, becuase I got an error message during booting and I
couldnīt find out the reason. I went through several times on the archives
but there is not exactly the answer I need. To make your help easier and
included lilo.conf, fstab, raidtab file, and df -k result, too.
First of all the error message at boot time is:
VFS: Cannot open root device "3a00" or 3a:00
Please append a correct "root=" boot option
Kernel Panic: Unable to mount root fs on 3a:00
My intention is to mirror every device using Linux software RAID, plus use
LVM on top of them. This is the point where we couldnīt find exact
documentation in either the Software RAID HowTO, or the LVM How-To.
We have the following configuration, including a brief summary about the
steps which we preformed.
I've got a system with four SCSI disks and I use Adaptec SCSI adapter. I use
LILO as the bootloader. We installed Suse 7.1 with Kernel 2.4.0 (LVM and
RAID support in the kernel not as module) using the lvm 1.0.1-rc4 patches
and lvm tools on /dev/sdd. Right now, we partitioned /dev/sda1 and /dev/sdb1
with 50MB each, and we built out of them /dev/md0 with software RAID-1. This
we would like to use as /boot. The rest of the system on /dev/sda and
/dev/sdb we partitioned in one huge partition each and we built out of them
/dev/md1 with Software RAID-1 and we created vg00 with lvm on top of it.
Then we put a new root logical volume on /dev/vg00/lvol1. We mounted on /mnt
and copied / over to it just fine, then edited /mnt/etc/fstab to put root on
/dev/vg00/lvol1. (The rest of the file systems we left temporary still on
/dev/sdd like /usr, /var, etc.) We created the new filesystems for /boot, /
with mke2fs.
We used lvmcreate_initrd to make /boot/initrd-lvm-2.4.3.gz, and can boot
lilo with initrd. At boot time, it boots the kernel, loads the ram disk,
runs /linuxrc and when it tries to mount the root file system we get the
error message, see above.
We think this is just a configuration issue, please check the files below
and give us some advice how to get the system up and running.
We would like to check the possibility if there is a way to elliminate this
small 50M partition for /boot and integrate that also into the big one under
LVM.
Thank you in advance.
Best Regards,
Ferenc Csuk
----------------------- config files --------------------------
Content of /etc/lilo.conf:
boot = /dev/sda
vga = normal
read-only
menu-scheme = Wg:kw:Wg:Wg
lba32
prompt
timeout = 80
message = /boot/message
image = /boot/vmlinuz
label = linux
root = /dev/sdd1
initrd = /boot/initrd
image = /boot/vmlinuz
label = linux_lvm
root = /dev/vg00/lvol1
initrd = /boot/initrd-lvm-2.4.0.gz
append = "ramdisk_size=8192"
optional
image = /boot/vmlinuz_24
label = linux_2.4
root = /dev/sdd1
initrd = /boot/initrd_24
optional
image = /boot/vmlinuz.suse
label = suse
root = /dev/sdd1
initrd = /boot/initrd.suse
optional
image = /boot/memtest.bin
label = memtest86
Content of /etc/raidtab:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/sda2
raid-disk 0
device /dev/sdb2
raid-disk 1
Content of /mnt/etc/fstab:
#/dev/sdd1 / ext2 defaults 1 1
#/dev/sdd2 /boot ext2 defaults 1 2
/dev/cdrom /cdrom auto ro,noauto,user,exec 0 0
devpts /dev/pts devpts defaults 0 0
/dev/fd0 /floppy auto noauto,user 0 0
/dev/sdd8 /home ext2 defaults 1 2
/dev/sdd7 /opt ext2 defaults 1 2
proc /proc proc defaults 0 0
/dev/sdd9 /tmp ext2 defaults 1 2
/dev/sdd5 /usr ext2 defaults 1 2
/dev/sdd6 /var ext2 defaults 1 2
/dev/sdd3 swap swap defaults 0 2
#
/dev/vg00/lvol1 / ext2 defaults 1 1
/dev/md0 /boot ext2 defaults 1 2
