Re: [Xen-users] Xen 3.0.2 on Dell 1850 - unable to recognize root fs on /dev/md2

[Stephen Yum <steveyum@xxxxxxxxxxxxxx>]

Thanks David!

I implemented your suggestion and, while I was at it, added md, raid0  
and raid1 statically. I decided to add LVM to the raid partitions and  
so built that in statically as well. So, here's what the kernel  
config looks like:
#
# Multi-device support (RAID and LVM)
#
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
# CONFIG_MD_LINEAR is not set
CONFIG_MD_RAID0=y
CONFIG_MD_RAID1=y
# CONFIG_MD_RAID10 is not set
# CONFIG_MD_RAID5 is not set
# CONFIG_MD_RAID6 is not set
# CONFIG_MD_MULTIPATH is not set
# CONFIG_MD_FAULTY is not set
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_CRYPT is not set
CONFIG_DM_SNAPSHOT=y
CONFIG_DM_MIRROR=y
# CONFIG_DM_ZERO is not set
# CONFIG_DM_MULTIPATH is not set

It then recognized the LVs fine, but I ran into a another different  
problem. It could not open the initial console. After searching the  
net, someone mentioned that udev must be mounted before a console can  
be opened. So I did:
# mkinitrd --builtin=mptbase --builtin=mptscsih --builtin=raid0 -- 
builtin=raid1 /boot/initrd-2.6.16-xen0.img 2.6.16-xen0
and added the following to my menu.lst file:

    module /initrd-2.6.16-xen0.img

and everything booted up fine!

Thanks again.

S

On May 17, 2006, at 2:41 PM, David F Barrera wrote:

> Make sure you have SCSI support built in:
>
> # SCSI device support
> #
> CONFIG_RAID_ATTRS=m
> CONFIG_SCSI=y
> CONFIG_SCSI_PROC_FS=y
>
> #
> # SCSI support type (disk, tape, CD-ROM)
> #
> CONFIG_BLK_DEV_SD=y
>
>
> You may also need MPT support:
>
> CONFIG_FUSION=y
> CONFIG_FUSION_SPI=y
>
>
>
> Stephen Yum wrote:
> > I'm trying to run Xen 3.0.2 on a Dell 1850 that has the following  
> > specs:
> > 2 x dual core 2.8Ghz Xeons
> > LSI something or rather SCSI controller
> > 2GB of RAM
> > 2 x 73GB Ultra SCSI 320 Maxtor drives
> >
> > I have the two hard drives in a RAID 1 configuration, where /dev/ 
> > md2 is the root partition.
> > my grub.conf/menu.lst file looks like this:
> >
> > title Xen 3.0
> > kernel /xen.gz dom0_mem=65536
> > module /vmlinuz-2.6-xen root=/dev/md2 ro console=tty0
> >
> > No matter what I try, it always does a kernel panic complaining  
> > about md2. So rather than using the binary files, I compiled a  
> > custom kernel with options for SCSI, RAID0, RAID1 and drivers for  
> > LSI SCSI stuff built in as static, rather than modules.
> > Same thing. The boot is always interrupted by the kernel panic  
> > complaining about md2. Has someone gotten Xen to run on such a  
> > setup? If so, can you offer any pointers?
> > S
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> --
>
> Regards,
>
> David F Barrera
> Linux Technology Center
> Systems and Technology Group, IBM
>
> "The wisest men follow their own direction. "
>                                                      Euripides
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

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