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

On 10/25/2010 09:11 PM, David Gonzalez Herrera wrote:

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-

And the command you suggested:

[root@vm linux-2.6-xen]# zcat /boot/initrd- | cpio -it | grep xen
15665 blocks

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
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.


I see you have the following from early post of domU config:

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

It's odd to see 2.6.18 initrd w/ kernel. I assume you have since changed this to /boot/initrd-

At some point in time did you install this 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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