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Re: [Xen-users] Live migration problem

Please find my xm_dmesg.txt  attached.

Here is my xen config file:
kernel ="/boot/vmlinuz-2.6.11-xenU"
memory = 256
name = "rawhide"
nics = 1
disk = ['phy:gnbd/gndb1xennode1root,sda1,w']
root = "/dev/sda1 ro"

I downloaded 2.0.7 and did a make world; make install

If you need anymore information, just let me know...

Thanks much,

Ian Pratt wrote:

I think I am having a similar problem as this:


on xen 2.0.7

I can live migrate successfully 90% of the time, but I do hit this. Is there an update on the status of a fix?

This is nasty -- the domain is probably crashing during the migrate. We
have never seen this failure mode on 2.0.7, even after many thousands of

Have you compiled your own kernel or are you using one of ours? (I
presume 2.6.11 ?)

What are you running in the guest?

What does 'xm dmesg' show?


The last part of the xfer log:

[1123789954.329159] Saving memory pages: iter 28   0%
Saving memory pages: iter 28   0%^M 28: sent 34, skipped 0,
^M 28: sent 34, skipped 0, [DEBUG] Conn_sxpr> (xfr.err 22)[DEBUG] Conn_sxpr< err=0 Retry suspend domain (0) (repeated 350 times or so) Retry suspend domain (0) Unable to suspend domain. (0) Unable to suspend domain. (0) Domain appears not to have suspended: 0 Domain appears not to have suspended: 0
4155 [WRN] XFRD> Transfer errors:
4155 [WRN] XFRD> state=XFR_STATE    err=1
4155 [INF] XFRD> Xfr service err=1

Thanks much for any help.


ERROR: cannot use unconfigured serial port COM1
 __  __            ____    ___  _____ 
 \ \/ /___ _ __   |___ \  / _ \|___  |
  \  // _ \ '_ \    __) || | | |  / / 
  /  \  __/ | | |  / __/ | |_| | / /  
 /_/\_\___|_| |_| |_____(_)___(_)_/   
 University of Cambridge Computer Laboratory

 Xen version 2.0.7 (root@xxxxxxxxxxxxxxx) (gcc version 3.2.3 20030502 (Red Hat 
Linux 3.2.3-47.fc4)) Thu Aug 11 11:40:32 EDT 2005
 Latest ChangeSet:  

(XEN) Physical RAM map:
(XEN)  0000000000000000 - 000000000009f800 (usable)
(XEN)  000000000009f800 - 00000000000a0000 (reserved)
(XEN)  00000000000e6c00 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000040fd800 (usable)
(XEN)  00000000040fd800 - 00000000040ff800 (ACPI data)
(XEN)  00000000040ff800 - 00000000040ffc00 (ACPI NVS)
(XEN)  00000000040ffc00 - 0000000028000000 (usable)
(XEN)  00000000fff80000 - 0000000100000000 (reserved)
(XEN) System RAM: 639MB (654960kB)
(XEN) Xen heap: 10MB (10776kB)
(XEN) CPU0: Before vendor init, caps: 0383f9ff 00000000 00000000, vendor = 0
(XEN) CPU caps: 0383f9ff 00000000 00000000 00000000
(XEN) ACPI: RSDP (v000 PTLTD                                     ) @ 0x000f6b80
(XEN) ACPI: RSDT (v001 PTLTD    RSDT   0x00000000 PTL  0x01000000) @ 0x040fdb3c
(XEN) ACPI: FADT (v001 DELL   KUBLAI   0x19990921 PTL  0x000f4240) @ 0x040ff78c
(XEN) ACPI: DSDT (v001  Intel  S2440BX 0x00000000 MSFT 0x01000004) @ 0x00000000
(XEN) Using scheduler: Borrowed Virtual Time (bvt)
(XEN) Initializing CPU#0
(XEN) Detected 498.867 MHz processor.
(XEN) Local APIC disabled by BIOS -- reenabling.
(XEN) Found and enabled local APIC!
(XEN) CPU0: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
(XEN) CPU caps: 0383fbff 00000000 00000000 00000000
(XEN) CPU0 booted
(XEN) SMP motherboard not detected.
(XEN) enabled ExtINT on CPU#0
(XEN) ESR value before enabling vector: 00000000
(XEN) ESR value after enabling vector: 00000000
(XEN) Using local APIC timer interrupts.
(XEN) Calibrating APIC timer for CPU0...
(XEN) ..... CPU speed is 498.8635 MHz.
(XEN) ..... Bus speed is 99.7725 MHz.
(XEN) ..... bus_scale = 0x0000662C
(XEN) Time init:
(XEN) .... System Time: 10978130ns
(XEN) .... cpu_freq:    00000000:1DBC1BEC
(XEN) .... scale:       00000002:0129A2E4
(XEN) .... Wall Clock:  1123773499s 30000us
(XEN) PCI: PCI BIOS revision 2.10 entry at 0xfd993, last bus=1
(XEN) PCI: Using configuration type 1
(XEN) PCI: Probing PCI hardware
(XEN) PCI: Probing PCI hardware (bus 00)
(XEN) PCI: Using IRQ router PIIX/ICH [8086/7110] at 00:07.0
(XEN) Limiting direct PCI/PCI transfers.
(XEN) mtrr: v2.0 (20020519)
(XEN) Xen-ELF header found: 
(XEN)  Kernel image:  00c00000->010415e8
(XEN)  Initrd image:  01042000->0123f600
(XEN)  Dom0 alloc.:   04400000->0c400000
(XEN)  Loaded kernel: c0100000->c056a020
(XEN)  Init. ramdisk: c056b000->c0768600
(XEN)  Phys-Mach map: c0769000->c0789000
(XEN)  Page tables:   c0789000->c078d000
(XEN)  Start info:    c078d000->c078e000
(XEN)  Boot stack:    c078e000->c078f000
(XEN)  TOTAL:         c0000000->c0c00000
(XEN)  ENTRY ADDRESS: c0100000
(XEN) Scrubbing DOM0 RAM: ..done.
(XEN) Initrd len 0x1fd600, start at 0xc056b000
(XEN) Scrubbing Free RAM: .......done.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
(XEN) PCI: Found IRQ 11 for device 00:0d.0
(XEN) PCI: Found IRQ 9 for device 00:07.2
(XEN) PCI: Sharing IRQ 9 with 00:0c.0

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