Re: [Xen-users] XEN 4.0.1 + pv_ops kernel DomU issues

[Richie <listmail@xxxxxxxxxxxx>]

On 10/25/2010 09:11 PM, David Gonzalez Herrera wrote:
> Richie,
>
> Well here is the command I use to build my initrd
>
> mkinitrd -v -f --with=xen-netfront --with=xen-blkfront 
> --preload=xen-blkfront --preload=xen-netfront 
> /boot/initrd-2.6.32.24domU.img  2.6.32.24xen
> And the command you suggested:
>
> [root@vm linux-2.6-xen]# zcat /boot/initrd-2.6.32.24domU.img | cpio 
> -it | grep xen
> 15665 blocks
> lib/xen-netfront.ko
> lib/xen-blkfront.ko
>
> And the error still is coming up:
>
> Trying to resume from /dev/vg0/swap
> Unable to access resume device (/dev/vg0/swap)
> Creating root device.
> Mounting root filesystem.
> mount: could not find filesystem '/dev/root'
> Setting up other filesystems.
> Setting up new root fs
> setuproot: moving /dev failed: No such file or directory
> no fstab.sys, mounting internal defaults
> setuproot: error mounting /proc: No such file or directory
> setuproot: error mounting /sys: No such file or directory
> Switching to new root and running init.
> unmounting old /dev
> unmounting old /proc
> unmounting old /sys
> switchroot: mount failed: No such file or directory
> Kernel panic - not syncing: Attempted to kill init!
> Pid: 1, comm: init Not tainted 2.6.32.24xen #2
> Call Trace:
>  [<ffffffff81048a6a>] ? panic+0x86/0x13c
>  [<ffffffff8100f5bf>] ? xen_restore_fl_direct_end+0x0/0x1
>  [<ffffffff8100f5bf>] ? xen_restore_fl_direct_end+0x0/0x1
>  [<ffffffff8100f5bf>] ? xen_restore_fl_direct_end+0x0/0x1
>  [<ffffffff8100ef51>] ? xen_force_evtchn_callback+0x9/0xa
>  [<ffffffff8100f5d2>] ? check_events+0x12/0x20
>  [<ffffffff8100f5bf>] ? xen_restore_fl_direct_end+0x0/0x1
>  [<ffffffff8100f5bf>] ? xen_restore_fl_direct_end+0x0/0x1
>  [<ffffffff81309145>] ? _write_lock_irq+0x7/0x16
>  [<ffffffff810518ec>] ? exit_ptrace+0x96/0x101
>  [<ffffffff8104a7cf>] ? find_new_reaper+0x74/0x7d
>  [<ffffffff8104b79e>] ? forget_original_parent+0x2d/0x112
>  [<ffffffff8104b893>] ? exit_notify+0x10/0x126
>  [<ffffffff8104bbf6>] ? do_exit+0x24d/0x2b1
>  [<ffffffff8104bccd>] ? do_group_exit+0x73/0x9d
>  [<ffffffff8104bd09>] ? sys_exit_group+0x12/0x16
>  [<ffffffff8130971a>] ? error_exit+0x2a/0x60
>  [<ffffffff81012a82>] ? system_call_fastpath+0x16/0x1b
>
> I'm sorry if this bothers anyone but I'm no developer and those 
> cryptic kernel messages really leave me lost.
> Thanks.
I see you have the following from early post of domU config:

kernel = "/boot/vmlinuz-2.6.32.24xen"
ramdisk = "/boot/initrd-2.6.18domU.img"

It's odd to see 2.6.18 initrd w/2.6.32.24 kernel.  I assume you have 
since changed this to /boot/initrd-2.6.32.24domU.img?
At some point in time did you install this 2.6.32.24xen kernel within 
the domU? (or at least copied over the respective /lib/modules into it's 
filesystem? [haven't done the latter before i think u probably would 
need System.map as well).
Alternatively, does the disk.img filesystem have a kernel/initrd to 
which you can copy out (mount via loopback in dom0, using kpartx as 
needed) and try as well?

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