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Re: [Xen-ia64-devel] Problems booting domU



Hi, Rodrigo

>VFS: Cannot open root device "sda7" or unknown-block(0,0)
>Please append a correct "root=" boot option
>Kernel panic - not syncing: VFS: Unable to mount root fs on
>unknown-block(0,0)
This message is shown when disk configuration is wrong.

>
>My "new" domU configuration:
>
>name="vm01"
>#kernel="/boot/efi/efi/debian/vmlinuz-2.6.16.13-xenU"
>kernel="/boot/vmlinuz-2.6.16.13-xenU"
>root="/dev/sda7 ro"
>memory=128
>disk=['file:/vserver/images/vm01.img,sda7,w','file:/vserver/images/vm01-
>swap.im$vif=['']
I look like the above disk configuration is wrong...
And please use hda(not use sda) in domU.

Can you make sure that /etc/fstab in domU's image and disk =[ 'xxx' ] in 
domU config are correct?

Please see my old mail. 
/etc/fstab in domU's image and disk =[ 'xxx' ] in domU config are the 
same one.
>---------------------------------
>Make OSimg for DomU
> 1. make file
>    # dd if=/dev/zero of=/root/rhel4.img bs=1M count=4096
>    # mke2fs -F -j /root/rhel4.img
>    # mount -o loop /root/rhel4.img /mnt
>    # cp -ax /{dev,var,etc,usr,bin,sbin,lib} /mnt
>    # mkdir /mnt/{root,proc,sys,home,tmp}
>
> 2. modify DomU's fstab
>    # vi /mnt/etc/fstab 
>       /dev/hda1   /            ext3    defaults        1 1   <-----this one
>       none        /dev/pts     devpts  gid=5,mode=620  0 0
>       none        /dev/shm     tmpfs   defaults        0 0
>       none        /proc        proc    defaults        0 0
>       none        /sys         sysfs   defaults        0 0
>

> 3. make config of DomU
>   # vi /etc/xen/rhel4
>     kernel = "/boot/efi/efi/redhat/vmlinuz-2.6.16.13-xen"
>     memory = 384
>     name = "rhel4"
>     nics=0
>     disk = [ 'file:/root/rhel4.img,hda1,w' ] <-------this one
>     root = "/dev/hda1 ro"
>     extra = "3"
> 


Best Regards,

Akio Takebe


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