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[Xen-devel] [BUG] repeated live migration for VM failed



Bug detailed description:

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

Create one RHEL7.3 HVM and do live migration continuously, while doing the 200+ or 300+ times live-migration, tool stack report error and migration failed.

 

Environment :

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

HW: Skylake server

Xen: Xen 4.9.0 RC4

Dom0: Linux 4.11.0

 

Reproduce steps:

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

1.      Compile Xen 4.9 Rc4 and dom0 kernel 4.11.0, boot to dom0

2.      Boot RHEL7.3 HVM guest

3.      Migrate guest to localhost, sleep 10 seconds

4.      Repeat doing the step3.

 

Current result:

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

VM Migration fail.

 

Base error log:

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

xl migrate 24hrs_lm_guest_2 localhost

root@localhost's password:

migration target: Ready to receive domain.

Saving to migration stream new xl format (info 0x3/0x0/1761)

Loading new save file <incoming migration stream> (new xl fmt info 0x3/0x0/1761)

Savefile contains xl domain config in JSON format

Parsing config from <saved>

xc: info: Saving domain 273, type x86 HVM

xc: info: Found x86 HVM domain from Xen 4.9

xc: info: Restoring domain

xc: error: set HVM param 12 = 0x00000000feffe000 (85 = Interrupted system call should ): Internal error

xc: error: Restore failed (85 = Interrupted system call should ): Internal error

libxl: error: libxl_stream_read.c:852:libxl__xc_domain_restore_done: restoring domain: Interrupted system call should be restarted

libxl: error: libxl_create.c:1217:domcreate_rebuild_done: Domain 274:cannot (re-)build domain: -3

libxl: error: libxl_domain.c:1003:libxl__destroy_domid: Domain 274:Non-existant domain

libxl: error: libxl_domain.c:962:domain_destroy_callback: Domain 274:Unable to destroy guest

libxl: error: libxl_domain.c:889:domain_destroy_cb: Domain 274:Destruction of domain failed

migration target: Domain creation failed (code -3).

libxl: error: libxl_utils.c:510:libxl_read_exactly: file/stream truncated reading ready message from migration receiver stream

libxl: info: libxl_exec.c:118:libxl_report_child_exitstatus: migration transport process [19847] exited with error status 1

Migration failed, resuming at sender.

 

 

HVM guest config file:

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

builder = "hvm"

name = "24hrs_lm_guest"

memory = 8192

vcpus = 4

vif = [ 'type=ioemu, mac=00:16:3e:12:4d:57, bridge=xenbr0' ]

disk = [ '/root/images/img.24hrs_lm_guest,qcow2,hda,rw' ]

device_model_override = '/usr/local/lib/xen/bin/qemu-system-i386'

device_model_version = 'qemu-xen'

sdl=0

vnc=1

stdvga=1

hap=1

acpi=1

gfx_passthru=0

hpet=1

serial='pty'

usb=1

usbdevice=['tablet']

 

 

 

Best Regards,

Xudong

 

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