[Xen-users] Trouble booting DomU on Centos 5.2 (x86_64)

["Vijay Subramanian" <vnssports@xxxxxxxxx>]

Hi,
I am trying to create a DomU that is a clone of the host. I am using
CentOS 5.2 with virtualization enabled . The steps I am following are
as documented in
http://www.virtuatopia.com/index.php/Building_a_Xen_Virtual_Guest_Filesystem_on_a_Disk_Image_(Cloning_Host_System)
Everything is x86_64.

The only things I have changed are as follows:
1: I am unmounting /tmp/loop which is the  root file system XenGuest.img
Note that the /boot is not copied into the Guest FS. But I also tried
copying it in but no luck.

The problem:
-- DomU does not boot.

I am getting the following error:
-----------
device-mapper: ioctl: 4.11.5-ioctl (2007-12-12) initialised: dm-devel@xxxxxxxxxx
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Kernel panic - not syncing: Attempted to kill init!

----------------
I have tried :
 --Creating a new initrd with xenblk and xennet included and preloaded
and omitting scsi, raid and lvm modules.
Tried variations of this in Dom0

#mkinitrd --omit-scsi-modules --with=xennet --with=xenblk
--preload=xenblk initrd-$(uname -r).img $(uname -r)
(also tried without raid and lvm modules)

I am using the same kernel and initrd from Dom0. i.e. the kernel it
came with 2.6.18-92.el5xen. When I make a new initrd, it is in Dom0.
-- Do I need to copy the /boot into the root file system of DomU or do
makinitrd on DomU ?
-- Do I need a new kernel?

I extracted initrd and xenblk seems to be present.

----------------------------------
My config file for the VM is:
kernel = '/boot/vmlinuz-2.6.18-92.el5xen'
ramdisk = '/boot/initrd-2.6.18-92.el5xen-no-scsi-1.img'
memory = 512
name = 'Xen1'
vif = [ '' ]
dhcp = 'dhcp'
disk = ['tap:aio:/xen/XenGuest1.img,xvda1,w',
'tap:aio:/xen/XenGuest1.swap,xvda2,w']
root = '/dev/xvda1 ro'

extra='xencons=tty'

on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

All my googling seems to indicate that I need a new initrd with xenblk
and no scsi but this does not seem to work.  I also replaced "tap:aio"
with "file" but no joy.
If there is anything I can try, please let me know. Any help/pointers
will be much appreciated. The archives also indicate this is usually
an initrd issue.

Thanks,
vns

--------------------------------
The last few lines of xm log are below:
Full boot message is below that:


[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:1350) XendDomainInfo.construct: None
[2008-11-23 19:38:09 xend 5946] DEBUG (balloon:127) Balloon: 2007164
KiB free; need 2048; done.
[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:1398) XendDomainInfo.initDomain: 160 1.0
[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:1437) _initDomain:shadow_memory=0x0, maxmem=0x200,
memory=0x200.
[2008-11-23 19:38:09 xend 5946] DEBUG (balloon:127) Balloon: 2031568
KiB free; need 524288; done.
[2008-11-23 19:38:09 xend 5946] INFO (image:137) buildDomain os=linux
dom=160 vcpus=1
[2008-11-23 19:38:09 xend 5946] DEBUG (image:202) domid          = 160
[2008-11-23 19:38:09 xend 5946] DEBUG (image:203) memsize        = 512
[2008-11-23 19:38:09 xend 5946] DEBUG (image:204) image          =
/boot/vmlinuz-2.6.18-92.el5xen
[2008-11-23 19:38:09 xend 5946] DEBUG (image:205) store_evtchn   = 1
[2008-11-23 19:38:09 xend 5946] DEBUG (image:206) console_evtchn = 2
[2008-11-23 19:38:09 xend 5946] DEBUG (image:207) cmdline        =
ip=:1.2.3.4::::eth0:dhcp root=/dev/xvda1 ro xencons=tty
[2008-11-23 19:38:09 xend 5946] DEBUG (image:208) ramdisk        =
/boot/initrd-2.6.18-92.el5xen-no-scsi-1.img
[2008-11-23 19:38:09 xend 5946] DEBUG (image:209) vcpus          = 1
[2008-11-23 19:38:09 xend 5946] DEBUG (image:210) features       =
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:110)
DevController: writing {\047mac\047: \04700:16:3e:4b:32:a9\047,
\047handle\047: \0470\047, \047protocol\047: \047x86_64-abi\047,
\047backend-id\047: \0470\047, \047state\047: \0471\047,
\047backend\047: \047/local/domain/0/backend/vif/160/0\047} to
/local/domain/160/device/vif/0.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:112)
DevController: writing {\047domain\047: \047Xen1\047, \047handle\047:
\0470\047, \047script\047: \047/etc/xen/scripts/vif-bridge\047,
\047state\047: \0471\047, \047frontend\047:
\047/local/domain/160/device/vif/0\047, \047mac\047:
\04700:16:3e:4b:32:a9\047, \047online\047: \0471\047,
\047frontend-id\047: \047160\047} to
/local/domain/0/backend/vif/160/0.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:110)
DevController: writing {\047virtual-device\047: \04756321\047,
\047device-type\047: \047disk\047, \047protocol\047:
\047x86_64-abi\047, \047backend-id\047: \0470\047, \047state\047:
\0471\047, \047backend\047:
\047/local/domain/0/backend/tap/160/56321\047} to
/local/domain/160/device/vbd/56321.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:112)
DevController: writing {\047domain\047: \047Xen1\047,
\047frontend\047: \047/local/domain/160/device/vbd/56321\047,
\047format\047: \047raw\047, \047dev\047: \047xvda1\047,
\047state\047: \0471\047, \047params\047:
\047aio:/xen/XenGuest1.img\047, \047mode\047: \047w\047,
\047online\047: \0471\047, \047frontend-id\047: \047160\047,
\047type\047: \047tap\047} to /local/domain/0/backend/tap/160/56321.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:110)
DevController: writing {\047virtual-device\047: \04756322\047,
\047device-type\047: \047disk\047, \047protocol\047:
\047x86_64-abi\047, \047backend-id\047: \0470\047, \047state\047:
\0471\047, \047backend\047:
\047/local/domain/0/backend/tap/160/56322\047} to
/local/domain/160/device/vbd/56322.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:112)
DevController: writing {\047domain\047: \047Xen1\047,
\047frontend\047: \047/local/domain/160/device/vbd/56322\047,
\047format\047: \047raw\047, \047dev\047: \047xvda2\047,
\047state\047: \0471\047, \047params\047:
\047aio:/xen/XenGuest1.swap\047, \047mode\047: \047w\047,
\047online\047: \0471\047, \047frontend-id\047: \047160\047,
\047type\047: \047tap\047} to /local/domain/0/backend/tap/160/56322.
[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:756) Storing VM details: {\047shadow_memory\047:
\0470\047, \047uuid\047: \0472ea38fa9-dc5e-700f-252a-d8da657dd398\047,
\047on_reboot\047: \047restart\047, \047start_time\047:
\0471227497889.28\047, \047on_poweroff\047: \047destroy\047,
\047name\047: \047Xen1\047, \047vcpus\047: \0471\047,
\047vcpu_avail\047: \0471\047, \047memory\047: \047512\047,
\047on_crash\047: \047restart\047, \047image\047: "(linux (kernel
/boot/vmlinuz-2.6.18-92.el5xen) (ramdisk
/boot/initrd-2.6.18-92.el5xen-no-scsi-1.img) (ip
:1.2.3.4::::eth0:dhcp) (root \047/dev/xvda1 ro\047) (args
\047xencons=tty\047))", \047maxmem\047: \047512\047}
[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:791) Storing domain details:
{\047console/ring-ref\047: \0471126964\047, \047console/port\047:
\0472\047, \047name\047: \047Xen1\047, \047console/limit\047:
\0471048576\047, \047vm\047:
\047/vm/2ea38fa9-dc5e-700f-252a-d8da657dd398\047, \047domid\047:
\047160\047, \047cpu/0/availability\047: \047online\047,
\047memory/target\047: \047524288\047, \047store/ring-ref\047:
\0471126965\047, \047store/port\047: \0471\047}
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices vif.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:149) Waiting for 0.
[2008-11-23 19:38:09 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:989) XendDomainInfo.handleShutdownWatch
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/vif/160/0/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/vif/160/0/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:490)
hotplugStatusCallback 1.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices usb.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices vbd.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices irq.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices vkbd.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices vfb.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices pci.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices ioports.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices tap.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:149) Waiting for 56321.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/tap/160/56321/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/tap/160/56321/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:490)
hotplugStatusCallback 1.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:149) Waiting for 56322.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/tap/160/56322/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/tap/160/56322/hotplug-status.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:490)
hotplugStatusCallback 1.
[2008-11-23 19:38:09 xend 5946] DEBUG (DevController:143) Waiting for
devices vtpm.
[2008-11-23 19:38:16 xend.XendDomainInfo 5946] WARNING
(XendDomainInfo:923) Domain has crashed: name=Xen1 id=160.
[2008-11-23 19:38:16 xend.XendDomainInfo 5946] ERROR
(XendDomainInfo:1828) VM Xen1 restarting too fast (7.792794 seconds
since the last restart).  Refusing to restart to avoid loops.
[2008-11-23 19:38:16 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:1560) XendDomainInfo.destroy: domid=160
[2008-11-23 19:38:16 xend.XendDomainInfo 5946] DEBUG
(XendDomainInfo:1568) XendDomainInfo.destroyDomain(160)
[2008-11-23 19:38:17 xend 5946] DEBUG (DevController:476)
hotplugStatusCallback
/local/domain/0/backend/vbd/85/56320/hotplug-status.


------------------

Full boot message:



Bootdata ok (command line is  ip=:1.2.3.4::::eth0:dhcp root=/dev/xvda1
ro xencons=tty)
Linux version 2.6.18-92.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxxx) (gcc
version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Tue Jun 10 19:20:18
EDT 2008
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000020800000 (usable)
No mptable found.
Built 1 zonelists.  Total pages: 133120
Kernel command line:  ip=:1.2.3.4::::eth0:dhcp root=/dev/xvda1 ro xencons=tty
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Xen reported: 2599.998 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Software IO TLB disabled
Memory: 499712k/532480k available (2414k kernel code, 24008k reserved,
1349k data, 176k init)
Calibrating delay using timer specific routine.. 6503.38 BogoMIPS (lpj=13006764)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: Physical Processor ID: 1
CPU: Processor Core ID: 1
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1C7A0 could
not acquire Mutex [2] [20060707]
No dock devices found.
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1C7A0 could
not acquire Mutex [2] [20060707]
Brought up 1 CPUs
PCI: Fatal: No PCI config space access function found
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1227498531.036:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 52394A11B61A91
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
WARNING: Failed to register Xen virtual console driver as 'tty1'
Event-channel device installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
XENBUS: Device with no driver: device/vbd/56321
XENBUS: Device with no driver: device/vbd/56322
XENBUS: Device with no driver: device/vif/0
Write protecting the kernel read-only data: 461k
Registering block device major 220
netfront: Initialising virtual ethernet driver.
netfront: device eth0 has flipping receive path.
USB Universal Host Controller Interface driver v3.0
SCSI subsystem initialized
device-mapper: uevent: version 1.0.3
device-mapper: ioctl: 4.11.5-ioctl (2007-12-12) initialised: dm-devel@xxxxxxxxxx
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Kernel panic - not syncing: Attempted to kill init!

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