Re: Migration - Xen 4.3

[Brian Marcotte <marcotte%panix.com@localhost>]

Some more information:

We're using QEMU to talk to the disks as we have a Ceph backend now.
Linux 3.2 in PV mode (Debian) works properly in this setup.

Full dmesg output, before any attempted migration:

NetBSD 6.1.5 (PANIX-XEN-STD) #1: Thu Jan 15 16:32:06 EST 2015
        root%juggler.panix.com@localhost:/misc/obj/misc/devel/netbsd/6.1.5/src/sys/arch/i386/compile/PANIX-XEN-STD
total memory = 500 MB
avail memory = 485 MB
timecounter: Timecounters tick every 10.000 msec
mainbus0 (root)
hypervisor0 at mainbus0: Xen version 4.3.3
VIRQ_DEBUG interrupt using event channel 3
vcpu0 at hypervisor0: Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz, id 0x6fb
vcpu1 at hypervisor0: Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz, id 0x6fb
xenbus0 at hypervisor0: Xen Virtual Bus Interface
xencons0 at hypervisor0: Xen Virtual Console Driver
xencons0: console major 143, unit 0
xencons0: using event channel 2
npx0 at hypervisor0: using exception 16
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
timecounter: Timecounter "xen_system_time" frequency 1000000000 Hz quality 10000
Xen clock: using event channel 5
Xen clock: using event channel 7
xenbus0: using event channel 1
xenbus: can't get state for device/suspend/event-channel (2)
xbd1 at xenbus0 id 1: Xen Virtual Block Device Interface
xbd1: using event channel 8
xbd2 at xenbus0 id 2: Xen Virtual Block Device Interface
xbd2: using event channel 9
xbd3 at xenbus0 id 3: Xen Virtual Block Device Interface
xbd3: using event channel 10
xennet0 at xenbus0 id 0: Xen Virtual Network Interface
xennet0: MAC address ee:ee:20:55:70:1c
xennet0: using event channel 11
balloon0 at xenbus0 id 0: Xen Balloon driver
balloon0: current reservation: 512000 KiB
xennet0: using RX copy mode
xenbus: can't get state for device/suspend/event-channel (2)
balloon0: current reservation: 128000 pages => target: 128001 pages
balloon0: memory 'hot-plug' unsupported - clipping reservation 1 => 0 pages.
balloon0: WARNING: balloon could not reach target 128001 (current 128000)
ignore shutdown request:
xenbus: can't get state for device/suspend/event-channel (2)
xbd1: 1024 MB, 512 bytes/sect x 2097152 sectors
xenbus: can't get state for device/suspend/event-channel (2)
xbd2: 5119 MB, 512 bytes/sect x 10485632 sectors
xenbus: can't get state for device/suspend/event-channel (2)
xbd3: 20479 MB, 512 bytes/sect x 41942912 sectors
xenbus: can't get state for device/suspend/event-channel (2)
boot device: xbd2
root on xbd2a dumps on xbd2b
root file system type: ffs
xenbus: can't get state for device/suspend/event-channel (2)
xenbus: can't get state for device/suspend/event-channel (2)