Re: [Xen-users] RHAS 4.0 and Xen

["Michael Paesold" <mpaesold@xxxxxx>]

Ghe Rivero wrote:

> Hello everyone!
> I'm trying to install RHAS 4.0 as a domU image on Xen. Almost
> everything is working now, but it already need to manual interaction to
> boot. It doesn't find the sda1 disk (a file.img on dom0)
>
> [/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/sda1
> /dev/sda1:
> The superblock could not be read or does not describe a correct ext2
> filesystem.  If the device is valid and it really contains an ext2
> filesystem (and not swap or ufs or something else), then the superblock
> is corrupt, and you might try running e2fsck with an alternate
> superblock:
>    e2fsck -b 8193 <device>
>
> ext2fs_check_if_mount: Input/output error while determining
> whether /dev/sda1 is mounted.
> fsck.ext3: No such file or directory while trying to open /dev/sda1
> [FAILED]
>
> *** An error occurred during the file system check.
> *** Dropping you to a shell; the system will reboot
> *** when you leave the shell.
> Give root password for maintenance
> (or type Control-D to continue):
>
> But if as root, i MAKEDEV the sda1, remount it on / and run "init 3"
> almost everything works properly.
>
> Anyone knows how to resolve this?
I guess this is the udev issue. Udev is not yet running when mounting the 
root partition, so you need to have an initrd containing the dev entries.
Read here: (6.2. Why does Fedora Core 3 stop working...)
http://wiki.xensource.com/xenwiki/XenFaq#head-ea8b39d71e49cc16d287257de4c482f99d883097

You have to add a ramdisk="/boot/..." to your domain configuration file. The 
initrd file must contain the device nodes.
Best Regards,
Michael Paesold 

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