[linux-lvm] RE: Kernel panic during booting using root with LVM on top of RAI D solved

[Csuk, Ferenc]

The problem has been solved. The SCSI Low level adapter driver was not
compiled into the kernel.

Thank you.

Regards,
Ferenc

>  -----Original Message-----
> From: 	Csuk, Ferenc  
> Sent:	Montag, 26. November 2001 21:20
> To:	'linux-lvm at sistina.com'
> Subject:	Kernel panic during booting using root with LVM on top of
> RAID
> 
> Hi LVM experts,
> 
> I need your help again, becuase I got an error message during booting and
> I couldn´t 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 couldn´t 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         
> 
> 
>