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

[Julien Grall <julien.grall@xxxxxxx>]

(CC Jan and Andrew)

On 22/05/17 07:35, Hao, Xudong wrote:
> 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
--
Julien Grall

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