2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

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Hello,

i test xen-4.0.0-rc1.
Dom0 seams to work, but i can't start a PV DomU.

It seams that the kernel doesn't load initrd an hangs there.

Without initrd the kernel can't mount / (root).

What do you need?

Stefan Kuhne

PS.: On Dom0 stratup i get "Debug" messages on tty.
Who can i turn this off?


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Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Pasi Kärkkäinen]

On Tue, Jan 26, 2010 at 03:16:35PM +0100, Stefan Kuhne wrote:
> Hello,
> 
> i test xen-4.0.0-rc1.
> Dom0 seams to work, but i can't start a PV DomU.
> 
> It seams that the kernel doesn't load initrd an hangs there.
> 
> Without initrd the kernel can't mount / (root).
> 
> What do you need?
> 

Please paste the "xm create -f /etc/xen/guest -c" console log from the guest.

> Stefan Kuhne
> 
> PS.: On Dom0 stratup i get "Debug" messages on tty.
> Who can i turn this off?
> 

What kind of "debug" messages?

-- Pasi

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

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Pasi Kärkkäinen schrieb:
> On Tue, Jan 26, 2010 at 03:16:35PM +0100, Stefan Kuhne wrote:
>> Hello,
>>
>> i test xen-4.0.0-rc1.
>> Dom0 seams to work, but i can't start a PV DomU.
>>
>> It seams that the kernel doesn't load initrd an hangs there.
>>
>> Without initrd the kernel can't mount / (root).
>>
>> What do you need?
>>
> 
> Please paste the "xm create -f /etc/xen/guest -c" console log from the guest.
> 
Long version:

eisxen # xm create -f /etc/xen/xm/xmTest-Eis2 -c
Using config file "/etc/xen/xm/xmTest-Eis2".
[    0.000000] Reserving virtual address space above 0xf5800000
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.31.6-xen (root@Dev-Eis) (gcc version
4.2.4 (Ubuntu 4.2.4-1ubuntu3)) #9 SMP Tue Jan 26 13:51:52 CET 2010
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] released 0 pages of unused memory
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  Xen: 0000000000000000 - 00000000000a0000 (usable)
[    0.000000]  Xen: 00000000000a0000 - 0000000000100000 (reserved)
[    0.000000]  Xen: 0000000000100000 - 0000000004000000 (usable)
[    0.000000] DMI not present or invalid.
[    0.000000] last_pfn = 0x4000 max_arch_pfn = 0x1000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] modified physical RAM map:
[    0.000000]  modified: 0000000000000000 - 0000000000002000 (usable)
[    0.000000]  modified: 0000000000002000 - 0000000000006000 (reserved)
[    0.000000]  modified: 0000000000006000 - 00000000000a0000 (usable)
[    0.000000]  modified: 00000000000a0000 - 0000000000100000 (reserved)
[    0.000000]  modified: 0000000000100000 - 0000000004000000 (usable)
[    0.000000] init_memory_mapping: 0000000000000000-0000000004000000
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] RAMDISK: 01837000 - 01dd2000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 64MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 04000000
[    0.000000]   low ram: 0 - 04000000
[    0.000000]   node 0 low ram: 00000000 - 04000000
[    0.000000]   node 0 bootmap 00014000 - 00014800
[    0.000000] (9 early reservations) ==> bootmem [0000000000 - 0004000000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==>
[0000000000 - 0000001000]
[    0.000000]   #1 [0001de5000 - 0001df7000]   XEN PAGETABLES ==>
[0001de5000 - 0001df7000]
[    0.000000]   #2 [0000001000 - 0000002000]    EX TRAMPOLINE ==>
[0000001000 - 0000002000]
[    0.000000]   #3 [0000006000 - 0000007000]       TRAMPOLINE ==>
[0000006000 - 0000007000]
[    0.000000]   #4 [0001000000 - 0001711a34]    TEXT DATA BSS ==>
[0001000000 - 0001711a34]
[    0.000000]   #5 [0001837000 - 0001dd2000]          RAMDISK ==>
[0001837000 - 0001dd2000]
[    0.000000]   #6 [0001dd2000 - 0001de5000]   XEN START INFO ==>
[0001dd2000 - 0001de5000]
[    0.000000]   #7 [0000007000 - 0000014000]          PGTABLE ==>
[0000007000 - 0000014000]
[    0.000000]   #8 [0000014000 - 0000015000]          BOOTMAP ==>
[0000014000 - 0000015000]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000000 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x00004000
[    0.000000]   HighMem  0x00004000 -> 0x00004000
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[3] active PFN ranges
[    0.000000]     0: 0x00000000 -> 0x00000002
[    0.000000]     0: 0x00000006 -> 0x000000a0
[    0.000000]     0: 0x00000100 -> 0x00004000
[    0.000000] Using APIC driver default
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] Local APIC disabled by BIOS -- you can enable it with "lapic"
[    0.000000] APIC: disable apic facility
[    0.000000] PM: Registered nosave memory: 0000000000002000 -
0000000000006000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 -
0000000000100000
[    0.000000] Allocating PCI resources starting at 4000000 (gap:
4000000:fc000000)
[    0.000000] NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Allocated 9 4k pages, static data 36764 bytes
[    0.000000] Xen: using vcpu_info placement
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 16156
[    0.000000] Kernel command line: root=/dev/hda1 ro xencons=tty1
[    0.000000] PID hash table entries: 256 (order: 8, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 51288k/65536k available (3813k kernel code,
13824k reserved, 2249k data, 388k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xf571e000 - 0xf57ff000   ( 900 kB)
[    0.000000]     pkmap   : 0xf5200000 - 0xf5400000   (2048 kB)
[    0.000000]     vmalloc : 0xc4800000 - 0xf51fe000   ( 777 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
[    0.000000]       .init : 0xc15ec000 - 0xc164d000   ( 388 kB)
[    0.000000]       .data : 0xc13b9629 - 0xc15ebb2c   (2249 kB)
[    0.000000]       .text : 0xc1000000 - 0xc13b9629   (3813 kB)
[    0.000000] SLUB: Genslabs=13, HWalign=64, Order=0-3, MinObjects=0,
CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:2304 nr_irqs:256
[    0.000000] Detected 1596.050 MHz processor.
[    0.000999] Console: colour dummy device 80x25
[    0.000999] console [tty0] enabled
[    0.000999] console [hvc0] enabled
[    0.000999] installing Xen timer for CPU 0
[    0.000999] Calibrating delay loop (skipped), value calculated using
timer frequency.. 3192.10 BogoMIPS (lpj=1596050)
[    0.000999] Security Framework initialized
[    0.000999] SELinux:  Initializing.
[    0.000999] Mount-cache hash table entries: 512
[    0.000999] Initializing cgroup subsys ns
[    0.000999] Initializing cgroup subsys cpuacct
[    0.000999] Initializing cgroup subsys freezer
[    0.000999] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.000999] CPU: L2 cache: 2048K
[    0.001052] CPU: Unsupported number of siblings 2
[    0.001090] Performance Counters: unsupported p6 CPU model 15 no PMU
driver, software counters only.
[    0.003363] SMP alternatives: switching to UP code
[    0.003999] Freeing SMP alternatives: 15k freed
[    0.005081] Brought up 1 CPUs
[    0.005785] khelper used greatest stack depth: 7248 bytes left
[    0.006776] Booting paravirtualized kernel on Xen
[    0.006810] Xen version: 4.0.0-rc1 (preserve-AD)
[    0.007379] Grant tables using version 2 layout.
[    0.008307] Grant table initialized
[    0.028052] Time: 165:165:165  Date: 165/165/65
[    0.028278] NET: Registered protocol family 16
[    0.029080] khelper used greatest stack depth: 7172 bytes left
[    0.029965] xenbus_probe wake_waiting
[    0.029995] xenbus_probe_init ok
[    0.032994] PCI: setting up Xen PCI frontend stub
[    0.048196] khelper used greatest stack depth: 7136 bytes left
[    0.062193] khelper used greatest stack depth: 7092 bytes left
[    0.084884] bio: create slab <bio-0> at 0
[    0.085515] ACPI: Interpreter disabled.
[    0.086372] xenbus_probe_backend_init bus registered ok
[    0.086406] xenbus_probe_devices backend
[    0.091125] xenbus_probe_devices failed xenbus_directory
[    0.091125] backend_probe_and_watch devices probed ok
[    0.092101] backend_probe_and_watch watch add ok ok
[    0.092130] backend_probe_and_watch all done
[    0.092457] xenbus_probe_frontend_init bus registered ok
[    0.092487] xenbus_probe_devices device
[    0.092530] xenbus_probe_devices 1/2 vbd
[    0.092530] xenbus_probe_device_type type vbd
[    0.093080] xenbus_probe_device_type 1/2 769
[    0.093370] xenbus_probe_device_type 2/2 770
[    0.094357] xenbus_probe_device_type done
[    0.094390] xenbus_probe_devices 2/2 console
[    0.094415] xenbus_probe_device_type type console
[    0.095109] xenbus_probe_device_type 1/1 0
[    0.095362] xenbus_probe_device_type done
[    0.095393] xenbus_probe_devices done
[    0.095417] frontend_probe_and_watch devices probed ok
[    0.096087] frontend_probe_and_watch watch add ok ok
[    0.096116] frontend_probe_and_watch all done
[    0.096145] xen_balloon: Initialising balloon driver with page order 0.
[    0.099085] khelper used greatest stack depth: 7088 bytes left
[    0.099181] SCSI subsystem initialized
[    0.100981] usbcore: registered new interface driver usbfs
[    0.101343] usbcore: registered new interface driver hub
[    0.101733] usbcore: registered new device driver usb
[    0.103886] PCI: System does not support PCI
[    0.103918] PCI: System does not support PCI
[    0.104810] NetLabel: Initializing
[    0.104836] NetLabel:  domain hash size = 128
[    0.104859] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.104939] NetLabel:  unlabeled traffic allowed by default
[    0.104967] Xen: Initializing Xen DMA ops
[    0.112833] pnp: PnP ACPI: disabled
[    0.115188] khelper used greatest stack depth: 7080 bytes left
[    0.117920] NET: Registered protocol family 2
[    0.118350] IP route cache hash table entries: 1024 (order: 0, 4096
bytes)
[    0.119067] TCP established hash table entries: 2048 (order: 2, 16384
bytes)
[    0.119120] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[    0.119163] TCP: Hash tables configured (established 2048 bind 2048)
[    0.119191] TCP reno registered
[    0.119426] NET: Registered protocol family 1
[    0.119648] Trying to unpack rootfs image as initramfs...
[    0.148573] Freeing initrd memory: 5740k freed
[    0.156599] platform rtc_cmos: registered platform RTC device (no PNP
device found)
[    0.159750] microcode: no support for this CPU vendor
[    0.159781] Scanning for low memory corruption every 60 seconds
[    0.160248] cryptomgr_test used greatest stack depth: 6936 bytes left
[    0.161942] audit: initializing netlink socket (disabled)
[    0.162172] type=2000 audit(1264522680.971:1): initialized
[    0.184661] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.203417] VFS: Disk quotas dquot_6.5.2
[    0.203865] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.207329] msgmni has been set to 111
[    0.210387] alg: No test for stdrng (krng)
[    0.211187] Block layer SCSI generic (bsg) driver version 0.4 loaded
(major 252)
[    0.211225] io scheduler noop registered
[    0.211249] io scheduler anticipatory registered
[    0.211274] io scheduler deadline registered
[    0.211660] io scheduler cfq registered (default)
[    0.212643] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    0.214541] Event-channel device installed.
[    0.232426] blktap_device_init: blktap device major 254
[    0.233025] blktap_ring_init: blktap ring major: 251
[    0.243442] registering netback
[    0.271990] Non-volatile memory driver v1.3
[    0.272019] Linux agpgart interface v0.103
[    0.273222] [drm] Initialized drm 1.1.0 20060810
[    0.273266] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.288968] brd: module loaded
[    0.295595] loop: module loaded
[    0.351552] input: Macintosh mouse button emulation as
/class/input/input0
[    0.353727] Initialising Xen virtual ethernet driver.
[    0.354211] console [netcon0] enabled
[    0.354241] netconsole: network logging started
[    0.355353] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.355700] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.356190] uhci_hcd: USB Universal Host Controller Interface driver
[    0.356924] usbcore: registered new interface driver usblp
[    0.356960] Initializing USB Mass Storage driver...
[    0.357436] usbcore: registered new interface driver usb-storage
[    0.357472] USB Mass Storage support registered.
[    0.357771] usbcore: registered new interface driver libusual
[    0.358960] PNP: No PS/2 controller found. Probing ports directly.
[    0.359019] i8042.c: No controller found.
[    0.360669] mice: PS/2 mouse device common for all mice
[    0.363284] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    0.364967] cpuidle: using governor ladder
[    0.364995] cpuidle: using governor menu
[    0.373218] blkfront: xvda1: barriers enabled
[    0.375595] usbcore: registered new interface driver hiddev
[    0.376409] usbcore: registered new interface driver usbhid
[    0.376442] usbhid: v2.6:USB HID core driver
[    0.377325] Advanced Linux Sound Architecture Driver Version 1.0.20.
[    0.380915] blkfront: xvda2: barriers enabled
[    0.387294] modprobe used greatest stack depth: 6504 bytes left
[    0.388517] ALSA device list:
[    0.388542]   No soundcards found.
[    0.388606] Netfilter messages via NETLINK v0.30.
[    0.388681] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[    0.390433] ctnetlink v0.93: registering with nfnetlink.
[    0.392128] ip_tables: (C) 2000-2006 Netfilter Core Team
[    0.392216] TCP cubic registered
[    0.392239] Initializing XFRM netlink socket
[    0.394242] NET: Registered protocol family 10
[    0.396408] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    0.396576] IPv6 over IPv4 tunneling driver
[    0.398545] NET: Registered protocol family 17
[    0.399342] RPC: Registered udp transport module.
[    0.399372] RPC: Registered tcp transport module.
[    0.399484] Using IPI No-Shortcut mode
[    0.400577] registered taskstats version 1
[    0.400635] XENBUS: Device with no driver: device/console/0
[    0.400706]   Magic number: 1:252:3141
[    0.400934] Freeing unused kernel memory: 388k freed
[    0.405803] Write protecting the kernel text: 3816k
[    0.407898] Write protecting the kernel read-only data: 1768k


>>
>> PS.: On Dom0 stratup i get "Debug" messages on tty.
>> Who can i turn this off?
>>
> 
> What kind of "debug" messages?
> 
I doesn't get it with ssh so i copy from dmesg:
[  152.830979]   alloc irq_desc for 406 on node 0
[  152.830987]   alloc kstat_irqs on node 0
[  152.831069] xenbus_probe wake_waiting
[  152.831076]   alloc irq_desc for 405 on node 0
[  152.831084]   alloc kstat_irqs on node 0
[  152.831157] xenbus_probe wake_waiting
[  152.835671] XENBUS: Unable to read cpu state
[  152.836037] XENBUS: Unable to read cpu state
[  152.836919] xenbus_probe_devices backend
[  152.840481] xenbus_probe_devices failed xenbus_directory
[  152.840535] backend_probe_and_watch devices probed ok
[  152.840854] backend_probe_and_watch watch add ok ok
[  152.840901] backend_probe_and_watch all done
[  152.840990] xenbus_probe_devices device
[  152.841684] xenbus_probe_devices failed xenbus_directory
[  152.841774] frontend_probe_and_watch devices probed ok
[  152.842336] frontend_probe_and_watch watch add ok ok
[  152.842425] frontend_probe_and_watch all done

Stefan Kuhne


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Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Konrad Rzeszutek Wilk]

> >> Without initrd the kernel can't mount / (root).

It looks as the initrd is executing fine. Not sure if the initrd
has switched root, thought it looks as it has.

> >>

.. snip ..
> [    0.118350] IP route cache hash table entries: 1024 (order: 0, 4096
> bytes)
> [    0.119067] TCP established hash table entries: 2048 (order: 2, 16384
> bytes)
> [    0.119120] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
> [    0.119163] TCP: Hash tables configured (established 2048 bind 2048)
> [    0.119191] TCP reno registered
> [    0.119426] NET: Registered protocol family 1
> [    0.119648] Trying to unpack rootfs image as initramfs...
> [    0.148573] Freeing initrd memory: 5740k freed

This is where the initrd starts.

> [    0.156599] platform rtc_cmos: registered platform RTC device (no PNP
> device found)
> [    0.159750] microcode: no support for this CPU vendor
> [    0.159781] Scanning for low memory corruption every 60 seconds
> [    0.160248] cryptomgr_test used greatest stack depth: 6936 bytes left
> [    0.161942] audit: initializing netlink socket (disabled)
> [    0.162172] type=2000 audit(1264522680.971:1): initialized
> [    0.184661] HugeTLB registered 2 MB page size, pre-allocated 0 pages
> [    0.203417] VFS: Disk quotas dquot_6.5.2
> [    0.203865] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> [    0.207329] msgmni has been set to 111
> [    0.210387] alg: No test for stdrng (krng)
> [    0.211187] Block layer SCSI generic (bsg) driver version 0.4 loaded
> (major 252)
> [    0.211225] io scheduler noop registered
> [    0.211249] io scheduler anticipatory registered
> [    0.211274] io scheduler deadline registered
> [    0.211660] io scheduler cfq registered (default)
> [    0.212643] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
> [    0.214541] Event-channel device installed.
> [    0.232426] blktap_device_init: blktap device major 254
> [    0.233025] blktap_ring_init: blktap ring major: 251
> [    0.243442] registering netback
> [    0.271990] Non-volatile memory driver v1.3
> [    0.272019] Linux agpgart interface v0.103
> [    0.273222] [drm] Initialized drm 1.1.0 20060810
> [    0.273266] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    0.288968] brd: module loaded
> [    0.295595] loop: module loaded
> [    0.351552] input: Macintosh mouse button emulation as
> /class/input/input0
> [    0.353727] Initialising Xen virtual ethernet driver.
> [    0.354211] console [netcon0] enabled
> [    0.354241] netconsole: network logging started
> [    0.355353] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    0.355700] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    0.356190] uhci_hcd: USB Universal Host Controller Interface driver
> [    0.356924] usbcore: registered new interface driver usblp
> [    0.356960] Initializing USB Mass Storage driver...
> [    0.357436] usbcore: registered new interface driver usb-storage
> [    0.357472] USB Mass Storage support registered.
> [    0.357771] usbcore: registered new interface driver libusual
> [    0.358960] PNP: No PS/2 controller found. Probing ports directly.
> [    0.359019] i8042.c: No controller found.
> [    0.360669] mice: PS/2 mouse device common for all mice
> [    0.363284] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
> [    0.364967] cpuidle: using governor ladder
> [    0.364995] cpuidle: using governor menu
> [    0.373218] blkfront: xvda1: barriers enabled
> [    0.375595] usbcore: registered new interface driver hiddev
> [    0.376409] usbcore: registered new interface driver usbhid
> [    0.376442] usbhid: v2.6:USB HID core driver
> [    0.377325] Advanced Linux Sound Architecture Driver Version 1.0.20.
> [    0.380915] blkfront: xvda2: barriers enabled
> [    0.387294] modprobe used greatest stack depth: 6504 bytes left
> [    0.388517] ALSA device list:
> [    0.388542]   No soundcards found.
> [    0.388606] Netfilter messages via NETLINK v0.30.
> [    0.388681] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
> [    0.390433] ctnetlink v0.93: registering with nfnetlink.
> [    0.392128] ip_tables: (C) 2000-2006 Netfilter Core Team
> [    0.392216] TCP cubic registered
> [    0.392239] Initializing XFRM netlink socket
> [    0.394242] NET: Registered protocol family 10
> [    0.396408] ip6_tables: (C) 2000-2006 Netfilter Core Team
> [    0.396576] IPv6 over IPv4 tunneling driver
> [    0.398545] NET: Registered protocol family 17
> [    0.399342] RPC: Registered udp transport module.
> [    0.399372] RPC: Registered tcp transport module.
> [    0.399484] Using IPI No-Shortcut mode
> [    0.400577] registered taskstats version 1
> [    0.400635] XENBUS: Device with no driver: device/console/0
> [    0.400706]   Magic number: 1:252:3141
> [    0.400934] Freeing unused kernel memory: 388k freed
> [    0.405803] Write protecting the kernel text: 3816k
> [    0.407898] Write protecting the kernel read-only data: 1768k
> 

I think the problem is you have made the console not be hvc0. Or in other
words, the rest of the system is outputing to another device that you
are not looking at. It could be very well going to the framebuffer,
thought it seems more likely it is going to netcon0. And I don't think
netcon0 is initialized at that point, so it is going to >/dev/null in
essence.

Add this to your command argument 'console=hvc0' for your guest.

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Pasi Kärkkäinen]

On Tue, Jan 26, 2010 at 05:27:07PM +0100, Stefan Kuhne wrote:
> Pasi Kärkkäinen schrieb:
> > On Tue, Jan 26, 2010 at 03:16:35PM +0100, Stefan Kuhne wrote:
> >> Hello,
> >>
> >> i test xen-4.0.0-rc1.
> >> Dom0 seams to work, but i can't start a PV DomU.
> >>
> >> It seams that the kernel doesn't load initrd an hangs there.
> >>
> >> Without initrd the kernel can't mount / (root).
> >>
> >> What do you need?
> >>
> > 
> > Please paste the "xm create -f /etc/xen/guest -c" console log from the guest.
> > 
> Long version:
> 
> eisxen # xm create -f /etc/xen/xm/xmTest-Eis2 -c
> Using config file "/etc/xen/xm/xmTest-Eis2".
> [    0.000000] Reserving virtual address space above 0xf5800000
> [    0.000000] Initializing cgroup subsys cpuset
> [    0.000000] Initializing cgroup subsys cpu
> [    0.000000] Linux version 2.6.31.6-xen (root@Dev-Eis) (gcc version
> 4.2.4 (Ubuntu 4.2.4-1ubuntu3)) #9 SMP Tue Jan 26 13:51:52 CET 2010
> [    0.000000] KERNEL supported cpus:
> [    0.000000]   Intel GenuineIntel
> [    0.000000]   AMD AuthenticAMD
> [    0.000000]   NSC Geode by NSC
> [    0.000000]   Cyrix CyrixInstead
> [    0.000000]   Centaur CentaurHauls
> [    0.000000]   Transmeta GenuineTMx86
> [    0.000000]   Transmeta TransmetaCPU
> [    0.000000]   UMC UMC UMC UMC
> [    0.000000] ACPI in unprivileged domain disabled
> [    0.000000] released 0 pages of unused memory
> [    0.000000] BIOS-provided physical RAM map:
> [    0.000000]  Xen: 0000000000000000 - 00000000000a0000 (usable)
> [    0.000000]  Xen: 00000000000a0000 - 0000000000100000 (reserved)
> [    0.000000]  Xen: 0000000000100000 - 0000000004000000 (usable)
> [    0.000000] DMI not present or invalid.
> [    0.000000] last_pfn = 0x4000 max_arch_pfn = 0x1000000
> [    0.000000] Scanning 1 areas for low memory corruption
> [    0.000000] modified physical RAM map:
> [    0.000000]  modified: 0000000000000000 - 0000000000002000 (usable)
> [    0.000000]  modified: 0000000000002000 - 0000000000006000 (reserved)
> [    0.000000]  modified: 0000000000006000 - 00000000000a0000 (usable)
> [    0.000000]  modified: 00000000000a0000 - 0000000000100000 (reserved)
> [    0.000000]  modified: 0000000000100000 - 0000000004000000 (usable)
> [    0.000000] init_memory_mapping: 0000000000000000-0000000004000000
> [    0.000000] NX (Execute Disable) protection: active
> [    0.000000] RAMDISK: 01837000 - 01dd2000
> [    0.000000] 0MB HIGHMEM available.
> [    0.000000] 64MB LOWMEM available.
> [    0.000000]   mapped low ram: 0 - 04000000
> [    0.000000]   low ram: 0 - 04000000
> [    0.000000]   node 0 low ram: 00000000 - 04000000
> [    0.000000]   node 0 bootmap 00014000 - 00014800
> [    0.000000] (9 early reservations) ==> bootmem [0000000000 - 0004000000]
> [    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==>
> [0000000000 - 0000001000]
> [    0.000000]   #1 [0001de5000 - 0001df7000]   XEN PAGETABLES ==>
> [0001de5000 - 0001df7000]
> [    0.000000]   #2 [0000001000 - 0000002000]    EX TRAMPOLINE ==>
> [0000001000 - 0000002000]
> [    0.000000]   #3 [0000006000 - 0000007000]       TRAMPOLINE ==>
> [0000006000 - 0000007000]
> [    0.000000]   #4 [0001000000 - 0001711a34]    TEXT DATA BSS ==>
> [0001000000 - 0001711a34]
> [    0.000000]   #5 [0001837000 - 0001dd2000]          RAMDISK ==>
> [0001837000 - 0001dd2000]
> [    0.000000]   #6 [0001dd2000 - 0001de5000]   XEN START INFO ==>
> [0001dd2000 - 0001de5000]
> [    0.000000]   #7 [0000007000 - 0000014000]          PGTABLE ==>
> [0000007000 - 0000014000]
> [    0.000000]   #8 [0000014000 - 0000015000]          BOOTMAP ==>
> [0000014000 - 0000015000]
> [    0.000000] Zone PFN ranges:
> [    0.000000]   DMA      0x00000000 -> 0x00001000
> [    0.000000]   Normal   0x00001000 -> 0x00004000
> [    0.000000]   HighMem  0x00004000 -> 0x00004000
> [    0.000000] Movable zone start PFN for each node
> [    0.000000] early_node_map[3] active PFN ranges
> [    0.000000]     0: 0x00000000 -> 0x00000002
> [    0.000000]     0: 0x00000006 -> 0x000000a0
> [    0.000000]     0: 0x00000100 -> 0x00004000
> [    0.000000] Using APIC driver default
> [    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
> [    0.000000] Local APIC disabled by BIOS -- you can enable it with "lapic"
> [    0.000000] APIC: disable apic facility
> [    0.000000] PM: Registered nosave memory: 0000000000002000 -
> 0000000000006000
> [    0.000000] PM: Registered nosave memory: 00000000000a0000 -
> 0000000000100000
> [    0.000000] Allocating PCI resources starting at 4000000 (gap:
> 4000000:fc000000)
> [    0.000000] NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1
> [    0.000000] PERCPU: Allocated 9 4k pages, static data 36764 bytes
> [    0.000000] Xen: using vcpu_info placement
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
> Total pages: 16156
> [    0.000000] Kernel command line: root=/dev/hda1 ro xencons=tty1

What if you use "console=hvc0" instead? 

Are you using pygrub or kernel+ramdisk defined in /etc/xen/<guest> ?

> 
> 
> >>
> >> PS.: On Dom0 stratup i get "Debug" messages on tty.
> >> Who can i turn this off?
> >>
> > 
> > What kind of "debug" messages?
> > 
> I doesn't get it with ssh so i copy from dmesg:
> [  152.830979]   alloc irq_desc for 406 on node 0
> [  152.830987]   alloc kstat_irqs on node 0
> [  152.831069] xenbus_probe wake_waiting
> [  152.831076]   alloc irq_desc for 405 on node 0
> [  152.831084]   alloc kstat_irqs on node 0
> [  152.831157] xenbus_probe wake_waiting
> [  152.835671] XENBUS: Unable to read cpu state
> [  152.836037] XENBUS: Unable to read cpu state
> [  152.836919] xenbus_probe_devices backend
> [  152.840481] xenbus_probe_devices failed xenbus_directory
> [  152.840535] backend_probe_and_watch devices probed ok
> [  152.840854] backend_probe_and_watch watch add ok ok
> [  152.840901] backend_probe_and_watch all done
> [  152.840990] xenbus_probe_devices device
> [  152.841684] xenbus_probe_devices failed xenbus_directory
> [  152.841774] frontend_probe_and_watch devices probed ok
> [  152.842336] frontend_probe_and_watch watch add ok ok
> [  152.842425] frontend_probe_and_watch all done
> 

Hmm.. yeah. Not sure how they can be disabled..

-- Pasi

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

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Pasi Kärkkäinen schrieb:

>> [    0.000000] Kernel command line: root=/dev/hda1 ro xencons=tty1
> 
> What if you use "console=hvc0" instead? 
> 
eisxen # xm create -f /etc/xen/xm/xmTest-Eis2 -c
Using config file "/etc/xen/xm/xmTest-Eis2".
Error: name 'hvc0' is not defined
eisxen #

> Are you using pygrub or kernel+ramdisk defined in /etc/xen/<guest> ?
> 
I think second.

kernel = "/boot/vmlinuz-xen"
ramdisk = "/boot/initrd-xen.gz"
memory = 64
name = "Test-Eis2"

Stefan Kuhne


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Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Pasi Kärkkäinen]

On Tue, Jan 26, 2010 at 06:28:59PM +0100, Stefan Kuhne wrote:
> Pasi Kärkkäinen schrieb:
> 
> >> [    0.000000] Kernel command line: root=/dev/hda1 ro xencons=tty1
> > 
> > What if you use "console=hvc0" instead? 
> > 
> eisxen # xm create -f /etc/xen/xm/xmTest-Eis2 -c
> Using config file "/etc/xen/xm/xmTest-Eis2".
> Error: name 'hvc0' is not defined
> eisxen #

It's an option for the _kernel_, not for use in xen cfgfile.
See below.

> 
> > Are you using pygrub or kernel+ramdisk defined in /etc/xen/<guest> ?
> > 
> I think second.
> 
> kernel = "/boot/vmlinuz-xen"
> ramdisk = "/boot/initrd-xen.gz"
> memory = 64
> name = "Test-Eis2"
> 

So you should have in /etc/xen/<guest> something like:

extra = "console=hvc0"

-- Pasi

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

[-- Attachment #1.1: Type: text/plain, Size: 395 bytes --]

Pasi Kärkkäinen schrieb:

>>> Are you using pygrub or kernel+ramdisk defined in /etc/xen/<guest> ?
>>>
>> I think second.
>>
>> kernel = "/boot/vmlinuz-xen"
>> ramdisk = "/boot/initrd-xen.gz"
>> memory = 64
>> name = "Test-Eis2"
>>
> 
> So you should have in /etc/xen/<guest> something like:
> 
> extra = "console=hvc0"
> 
I've added to extra but same result.

Stefan Kuhne


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Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Konrad Rzeszutek Wilk]

> > extra = "console=hvc0"
> > 
> I've added to extra but same result.

Did you add that before or after your other extra line? You had the
'xencons' defined somewhere - was it in the root or extra stanza?

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Pasi Kärkkäinen]

On Tue, Jan 26, 2010 at 06:41:23PM +0100, Stefan Kuhne wrote:
> Pasi Kärkkäinen schrieb:
> 
> >>> Are you using pygrub or kernel+ramdisk defined in /etc/xen/<guest> ?
> >>>
> >> I think second.
> >>
> >> kernel = "/boot/vmlinuz-xen"
> >> ramdisk = "/boot/initrd-xen.gz"
> >> memory = 64
> >> name = "Test-Eis2"
> >>
> > 
> > So you should have in /etc/xen/<guest> something like:
> > 
> > extra = "console=hvc0"
> > 
> I've added to extra but same result.
> 

Did you remove the netconsole? Also try with more memory..

-- Pasi

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

[-- Attachment #1.1: Type: text/plain, Size: 1885 bytes --]

Pasi Kärkkäinen schrieb:
> On Tue, Jan 26, 2010 at 08:13:45PM +0100, Stefan Kuhne wrote:
>> Pasi Kärkkäinen schrieb:
>>> On Tue, Jan 26, 2010 at 06:41:23PM +0100, Stefan Kuhne wrote:
>>>> Pasi Kärkkäinen schrieb:
>>>>
>>>>> extra = "console=hvc0"
>>>>>
>>>> I've added to extra but same result.
>>>>
>>> Did you remove the netconsole? Also try with more memory..
>>>
>> I've reduce my config to minimum:
>>
>> eisxen # cat /etc/xen/xm/xmTest-Eis2
>> #  -*- mode: python; -*-
>> #============================================================================
>> # Python configuration setup for 'xm create'.
>> # This script sets the parameters used when a domain is created using
>> 'xm create'.
>> # You use a separate script for each domain you want to create, or
>> # you can set the parameters for the domain on the xm command line.
>> #============================================================================
>>
>> kernel = "/boot/vmlinuz-xen"
>> ramdisk = "/boot/initrd-xen.gz"
>> memory = 256
>> name = "Test-Eis2"
>>
>> disk = [ 'phy:/dev/vg/Test-Eis2,hda1,w',
>> 'phy:/dev/vg/Test-Eis2-swap,hda2,w' ]
>>
>> root = "/dev/hda1"
>>
>> extra = "ro quiet console=hvc0 " #xencons=tty1"
>> eisxen #
>>
>> But nothing happens.
>>
> 
> Remove "quiet".
> Also, how did you generate the initrd?
> 
echo ""
  mecho -info "Create initrd ..."
  echo ""

  cd ${INITRD_DIR}
  find ./ | cpio -H newc -o > ${INSTALL_PATH}/boot/initrd-${KERNEL_VERSION}
  cpio=$?

  if [ ${cpio} == 0 ]
  then
    gzip -f ${INSTALL_PATH}/boot/initrd-${KERNEL_VERSION}
    gzip=$?
  fi

This is the same initrd like Dom0.

>> Can i run an old DomU Kernel on pv_ops Kernel?
>>
> 
> Yes you can. Xen hypervisor is the compatibility layer there.
> domUs talk to Xen, not directly to dom0.
> 
Than i'll test an older DomU Kernel.

Stefan Kuhne


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Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Konrad Rzeszutek Wilk]

> > Also, how did you generate the initrd?
> > 
> echo ""
>   mecho -info "Create initrd ..."
>   echo ""
> 
>   cd ${INITRD_DIR}
>   find ./ | cpio -H newc -o > ${INSTALL_PATH}/boot/initrd-${KERNEL_VERSION}
>   cpio=$?
> 
>   if [ ${cpio} == 0 ]
>   then
>     gzip -f ${INSTALL_PATH}/boot/initrd-${KERNEL_VERSION}

I think you need to append "-9" argument. That is what 'mkinitrd' does:

(cd $MNTIMAGE; findall . | cpio -H newc --quiet -o) >| $IMAGE || exit 1

if [ -n "$compress" ]; then
    gzip -9 < $IMAGE >| $target || rc=1
else
    cp -a $IMAGE $target || rc=1
fi

Re: 2.6.31.6 pv_ops from xen-4.0.0-rc1 hangs by DomU initrd

[Stefan Kuhne]

[-- Attachment #1.1: Type: text/plain, Size: 434 bytes --]

Am 26.01.2010 15:16, schrieb Stefan Kuhne:
Hello,

> 
> i test xen-4.0.0-rc1.
> Dom0 seams to work, but i can't start a PV DomU.
> 
> It seams that the kernel doesn't load initrd an hangs there.
> 
> Without initrd the kernel can't mount / (root).
> 
> What do you need?
> 
I've test Dom0 2.6.31.6 and DomU 2.6.24-24-xen from Ubuntu.
DomU works fine.

Which part of .config should i post?

Regards,
Stefan Kuhne


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