[Xen-users] Error migrating HVM DomU in heterogeneous cluster

[Agustín López <Agustin.Lopez@xxxxx>]

Hello.

I am trying to live migrate one DomU with Windows HVM between two Dom0s with 
Debian Buster with Xen 4.11.2-pre and kernel 4.19.0-4-amd64
and I always get the error of below (with PV Debian Linux DomU works Ok).
The two Dom0s have different CPUs.
I am trying to mask the CPUs with the tool xen_maskcalc.py and configuring the 
DomU, but the error go on (see cfg below).
The medium is shared, NFS.

Can anybody help me?

Thanks,
Agustin

-----------------------------------------------
migration target: Ready to receive domain.
Saving to migration stream new xl format (info 0x3/0x0/2193)
Loading new save file <incoming migration stream> (new xl fmt info 0x3/0x0/2193)
 Savefile contains xl domain config in JSON format
Parsing config from <saved>
xc: info: Saving domain 2, type x86 HVM
xc: info: Found x86 HVM domain from Xen 4.11
xc: info: Restoring domain
xc: error: Mapping pfn 0xaf000 (mfn 0xaf000, type 0) failed with -22: Internal 
error
xc: error: Restore failed (0 = Success): Internal error
libxl: error: libxl_stream_read.c:850:libxl__xc_domain_restore_done: restoring 
domain: Success
libxl: error: libxl_create.c:1267:domcreate_rebuild_done: Domain 30:cannot 
(re-)build domain: -3
libxl: error: libxl_domain.c:1034:libxl__destroy_domid: Domain 30:Non-existant 
domain
libxl: error: libxl_domain.c:993:domain_destroy_callback: Domain 30:Unable to 
destroy guest
libxl: error: libxl_domain.c:920:domain_destroy_cb: Domain 30:Destruction of 
domain failed
migration target: Domain creation failed (code -3).
libxl: error: libxl_utils.c:510:libxl_read_exactly: file/stream truncated 
reading ipc msg header from domain 2 save/restore helper stdout pipe
libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 2 
save/restore helper [9870] died due to fatal signal Broken pipe
migration sender: libxl_domain_suspend failed (rc=-3)
libxl: info: libxl_exec.c:118:libxl_report_child_exitstatus: migration 
transport process [9869] exited with error status 1
Migration failed, resuming at sender.
xc: error: Dom 2 not suspended: (shutdown 0, reason 255): Internal error
libxl: error: libxl_dom_suspend.c:472:libxl__domain_resume: Domain 
2:xc_domain_resume failed: Invalid argument
-----------------------------------------------
windows.cfg

builder='hvm'
memory='4000'
shadow_memory=8
disk=['file:/Xxxxxxxxxxxxxxx/windows-disk.raw,ioemu:hda,w']
name='windows'
vif=['type=ioemu,bridge=mybridge,mac=0e:00:00:00:01:1e']
vfb=['type=vnc,vnclisten=localhost,vncdisplay=1']
boot='c'
vcpus=4
ne2000=1
apic=1
acpi=1
sdl=0
vnc=1
pae=1
stdvga=0
vncconsole=1
vncviewer=1
vncserver=1
nographic=0
usbdevice='tablet'
serial='pty'
#soundhw='sb16'
on_poweroff='destroy'
on_reboot='restart'
on_crash='restart'
cpuid = [
  "0x00000001:ecx=x000xx000x00xx0xxxxxxxxx00xxxx0x",
  "0x00000007,0x00:ebx=xxxxxxxxxxxxxxxxxxxxxx0x0xxxxxx0"
]
-----------------------------------------------

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